CN114804580A - Waste slurry productization forming system for slurry shield construction - Google Patents
Waste slurry productization forming system for slurry shield construction Download PDFInfo
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- CN114804580A CN114804580A CN202210473244.6A CN202210473244A CN114804580A CN 114804580 A CN114804580 A CN 114804580A CN 202210473244 A CN202210473244 A CN 202210473244A CN 114804580 A CN114804580 A CN 114804580A
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- 239000002002 slurry Substances 0.000 title claims abstract description 124
- 239000002699 waste material Substances 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 86
- 239000011449 brick Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 30
- 230000018044 dehydration Effects 0.000 claims abstract description 28
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000005189 flocculation Methods 0.000 claims description 60
- 230000016615 flocculation Effects 0.000 claims description 59
- 238000006243 chemical reaction Methods 0.000 claims description 52
- 238000003756 stirring Methods 0.000 claims description 31
- 208000005156 Dehydration Diseases 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002689 soil Substances 0.000 claims description 16
- 239000008394 flocculating agent Substances 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 11
- 235000006506 Brasenia schreberi Nutrition 0.000 claims description 2
- 244000267222 Brasenia schreberi Species 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000000748 compression moulding Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000004744 fabric Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000011451 fired brick Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a slurry shield construction waste slurry product forming system and relates to the technical field of waste slurry treatment. A production forming system for waste slurry in slurry shield construction comprises a support frame, and a primary dewatering system, a secondary dewatering system and a material forming system which are sequentially communicated; the primary dewatering system is arranged on the support frame and is used for dewatering the waste slurry to obtain concentrated slurry; the secondary dewatering system is arranged on the support frame and used for compressing and dewatering the concentrated slurry to obtain a mud cake; the material forming system is arranged on the support frame and used for crushing the mud cakes into mud powder, mixing the mud powder with an additional material and pressing the mixture into blocks. The invention can be directly prepared into baking-free bricks with uniform texture and up-to-standard strength by multistage dehydration and compression molding.
Description
Technical Field
The invention relates to the technical field of waste slurry treatment, in particular to a slurry shield construction waste slurry product forming system.
Background
The description of the background of the invention pertaining to the related art to which this invention pertains is given for the purpose of illustration and understanding only of the summary of the invention and is not to be construed as an admission that the applicant is explicitly or implicitly admitted to be prior art to the date of filing this application as first filed with this invention.
With the rapid development of urban infrastructure construction in China, traffic tunnels enter a construction peak, and slurry shields are used as the first construction method for urban subways and large river-crossing tunnel projects, and have unique advantages in the aspects of stratum adaptability, construction influence control and the like. However, during the construction of the slurry shield, a large amount of waste slurry is also inevitably generated, and if the waste slurry is not properly disposed, serious environmental problems can be caused, especially in the large environment of the development of the slurry shield with large diameter/super large diameter.
The traditional treatment process mainly comprises several types of chemical flocculation, filter pressing treatment, centrifugal separation and the like, and the essential purpose of the traditional treatment process is not to realize further water-soil separation on the basis of conventional screening and rotational flow so as to facilitate classification treatment and resource utilization of the traditional treatment process, thereby avoiding the possible environmental influence caused by direct discharge. However, because the amount of the waste slurry is large, chemical flocculation usually requires high time cost, and the treated bottom sludge still has high water content and is often used as a pretreatment means and combined with other processes. The means of utilizing the treated product include, but are not limited to, use as a backfill grouting material, for making non-fired bricks, and as a backfill, but are limited by the cost of the treatment and are not currently in widespread use. If the baking-free brick is manufactured, the current equipment foundation cannot be well connected with the existing process, the flow line production in a certain sense cannot be realized, and the utilization efficiency is relatively low.
Disclosure of Invention
The invention aims to provide a waste slurry productization and forming system for slurry shield construction, and the system is used for solving the problem that the existing production line can not reuse waste slurry to prepare baking-free bricks.
The technical scheme for solving the technical problems is as follows:
the utility model provides a muddy water shield construction abandonment mud productization molding system which characterized in that includes: the device comprises a support frame, a primary dehydration system, a secondary dehydration system and a material forming system, wherein the primary dehydration system, the secondary dehydration system and the material forming system are all arranged on the support frame and are sequentially communicated; the primary dewatering system is used for dewatering the waste slurry to obtain concentrated slurry; the secondary dehydration system is used for compressing and dehydrating the concentrated slurry to obtain a mud cake; and the material forming system is used for crushing the mud cakes into mud powder, mixing the mud powder with an additional material and pressing the mixture into blocks.
The beneficial effects of adopting the above technical scheme are: the method comprises the following steps that waste slurry to be treated flows into a primary dewatering system at a certain flow rate, and the primary dewatering system dewaters the waste slurry to obtain concentrated slurry; the concentrated slurry flows into a secondary dewatering system, the secondary dewatering system compresses and dewaters the concentrated slurry, and the concentrated slurry is compressed and formed into a mud cake; the mud cakes fall into a material forming system, the material forming system firstly crushes the mud cakes into mud powder, and the mud powder is mixed with an external material and then pressed into bricks.
According to the technical scheme, the bricks are formed by multistage dehydration and pressing, the process can directly obtain baking-free brick products with uniform texture and up-to-standard strength, the formed bricks can be used in places such as municipal road construction, water conservancy construction, slope protection construction and engineering construction, the full-automatic production of the waste slurry is realized, the disposal level of the waste slurry is improved, the characteristics of the waste slurry are effectively utilized, and the added value of the waste slurry is improved.
Further, one-level dewatering system includes the flocculation reaction pond, one-level dehydration pond and respectively set up flocculation reaction subassembly and one-level dewatering device in flocculation reaction pond and one-level dehydration pond, flocculation reaction pond and one-level dehydration pond all set up on the support frame, inlet pipe and abandonment mud source intercommunication are passed through to the one end in flocculation reaction pond, the other end and the one-level dewatering device intercommunication in flocculation reaction pond, the top intercommunication in flocculation reaction pond has the charge device who is used for putting in the flocculating agent, the flocculation reaction subassembly is used for stirring abandonment mud and flocculating agent emergence flocculation reaction, one-level dewatering device is used for dewatering the abandonment mud that obtains concentrated mud after the flocculation treatment.
Further, the flocculation reaction component comprises a stirring piece and a fixing frame for fixing the stirring piece, the fixing frame is arranged at the top of the flocculation reaction tank, the top end of the stirring piece is connected with the fixing frame, and the bottom end of the stirring piece extends into the flocculation reaction tank; the flocculation reaction tank is communicated with a primary dewatering device.
The beneficial effects of adopting the above technical scheme are: the waste mud firstly flows into the flocculation reaction tank, the dosing device adds a flocculating agent into the flocculation reaction tank, a flow field is formed under the action of the stirring piece, the flocculating agent and the waste mud fully react, and the waste mud after flocculation treatment flows into the primary dewatering device for dewatering. Set up among this technical scheme and stir the piece and can make flocculating agent and abandonment mud fully react, carry out flocculation treatment to abandonment mud earlier, make things convenient for follow-up dehydration better to handle, improve dehydration treatment efficiency.
Furthermore, a slurry collecting tank for collecting concentrated slurry is arranged in the primary dewatering tank, the primary dewatering device is obliquely arranged in the primary dewatering tank, the bottom end of the primary dewatering device is communicated with an external water collecting tank through a water outlet pipe, and the top end of the primary dewatering device is communicated with the slurry collecting tank; the slurry collecting tank is communicated with the secondary dewatering system through the slurry discharging pipe.
The beneficial effects of adopting the above technical scheme are: waste slurry after flocculation treatment flows into one-level dewatering device, and waste slurry is concentrated through gravity in one-level dewatering device earlier, produces very big internal pressure in the one-level dewatering device, and the volume constantly reduces to take off most moisture of waste slurry, one-level dewatering device plays preliminary dehydration's effect.
Further, the secondary dewatering system comprises a secondary dewatering device and a secondary placing box for placing the secondary dewatering device, the secondary placing box is arranged on the supporting frame, and the primary dewatering system, the secondary placing box and the crushing device are sequentially arranged on the supporting frame from top to bottom; one end of the second-stage dewatering device is communicated with the first-stage dewatering system, the other end of the second-stage dewatering device is communicated with an external water collecting tank through a water outlet pipe, the second-stage dewatering device is used for compressing and dewatering the concentrated slurry to obtain mud cakes, and the bottom of the supporting frame and the bottom of the second-stage placing box are provided with mud cake lower leakage openings used for enabling the mud cakes to leak to the crushing device.
Further, the secondary dewatering device is a plate-and-frame filter press.
The beneficial effects of adopting the above technical scheme are: the concentrated slurry flows into the secondary dewatering device, the concentrated slurry flows through a filter medium of the secondary dewatering device, the solids stay on the filter cloth of the secondary dewatering device and are gradually accumulated on the filter cloth to form a mud cake through extrusion, the filtrate without the solids flows into an external water collecting tank through a water outlet pipe, and the mud cake leaks into the material forming system. The secondary dewatering device plays a role in further dewatering, so that solid and liquid in the concentrated slurry are separated, and the mud cake formed by filtering and extruding through the plate-and-frame filter press has higher solid content and excellent separation effect, and is more suitable for the technical scheme.
Further, the material forming system includes reducing mechanism and the material mixing forming device who is connected with the reducing mechanism, and reducing mechanism and material mixing forming device all set up on the support frame, and reducing mechanism and second grade dewatering system are connected, and reducing mechanism is used for smashing the mud cake and obtains the mud powder, and material mixing forming device is used for mixing mud powder and plus material to compress the bulk with the misce bene.
Further, the smashing device comprises a first conveyor, a soil pulverizer and a second conveyor which are sequentially connected and all arranged on the supporting frame, the first conveyor is connected with the second-level dewatering system, the soil pulverizer is used for pulverizing mud cakes and obtaining mud powder, and the second conveyor is connected with the material mixing and forming device.
The beneficial effects of adopting the above technical scheme are: after the second-stage dewatering system dewaters to obtain mud cakes, the mud cakes leak to the first conveyor, the first conveyor conveys the mud cakes to the soil pulverizer, the soil pulverizer pulverizes the mud cakes into powder and then conveys the powder to the material mixing and forming device through the second conveyor, and the material mixing and forming device stirs the powder and additional materials and presses and forms the bricks. Because what obtain behind the dehydration of second grade dewatering system is the mud cake, the mud cake is difficult for stirring with plus material, and more difficult shaping is the fragment of brick, consequently sets up the hack machine and can smash the mud cake that forms after the dehydration into the mud powder, more is favorable to plus material mixing, more is favorable to material mixing forming device to be the fragment of brick of high density with the combined material compression molding moreover.
Further, the top of first conveyer is equipped with the fender apron that is used for preventing the mud powder departure, and the slope of second conveyer sets up, and the bottom and the hack machine of second conveyer are connected, and the top and the material mixing forming device of second conveyer are connected.
Further, the material mixing and forming device comprises a mixer, a third conveyor and a brick press for press-forming the mixed material into bricks, wherein the mixer, the third conveyor and the brick press are all arranged on the support frame, and the mixer is connected with the crushing device; the third conveyer is obliquely arranged, the bottom end of the third conveyer is connected with the discharge hole of the crushing device, and the top end of the third conveyer is connected with the feed inlet of the brick press.
The beneficial effects of adopting the above technical scheme are: the mud cakes are crushed into mud powder by the crushing device, and then fall into the mixer to be stirred with the additional material to obtain a mixed material, the mixed material is conveyed to a brick press by a third conveyor, and the brick press presses and forms the mixed material into bricks. The mixed material can be timely conveyed to the brick press through the third conveyor, and the mixed material is prevented from being accumulated in the mixer.
The invention has the following beneficial effects:
(1) the brick is formed by multistage dehydration and pressing, so that a baking-free brick product with uniform texture and standard strength can be directly obtained by the process, and the formed brick can be used in places such as municipal road construction, water conservancy construction, slope protection construction, engineering construction and the like, so that the full-automatic production of the waste slurry is realized, the disposal level of the waste slurry is improved, the characteristics of the waste slurry are effectively utilized, and the added value of the waste slurry is improved.
(2) The stirring piece is arranged in the invention, so that the flocculating agent can fully react with the waste slurry, the waste slurry is flocculated firstly, the subsequent dewatering treatment can be conveniently and better carried out, and the dewatering treatment efficiency is improved.
(3) The secondary dewatering device of the invention plays a role in further dewatering, so that the solid and the liquid in the concentrated slurry are separated, and the mud cake obtained by filtering and extruding the concentrated slurry by the plate-and-frame filter press has higher solid content and excellent separation effect, thus being more suitable for the invention.
(4) The invention is provided with the soil crusher to crush the mud cakes formed after dehydration into mud powder, which is more beneficial to mixing additional materials and is more beneficial to the material mixing and forming device to press and form the mixed materials into bricks with high density.
Drawings
FIG. 1 is a flow chart of a production molding system for slurry shield construction waste slurry.
FIG. 2 is a schematic structural diagram of a slurry shield construction waste slurry productization molding system of the present invention.
Fig. 3 is a schematic structural diagram of the support frame of the present invention.
FIG. 4 is a schematic diagram of the primary dewatering system of the present invention.
Fig. 5 is a schematic structural diagram of the secondary placement box of the present invention.
Fig. 6 is a schematic structural diagram of a material molding system of the present invention.
In the figure: 1-a crushing device; 111-material blocking coaming; 101-a first conveyor; 102-a pulverizer; 103-a second conveyor; 2-material mixing and forming device; 201-a mixer; 202-a third conveyor; 203-brick press; 301-flocculation reaction tank; 302-first stage dehydration pool; 321-a slurry collection tank; 322-mud discharge pipe; 323-mounting table; 303-a flocculation reaction component; 331-a stirring member; 332-a fixing frame; 304-a primary dewatering device; 305-a feed pipe; 401-secondary dewatering device; 402-secondary placement box; 421-mud cake lower drain hole; 5-a support frame; 501-a first layer box body; 502-a second level of tanks; 503-a third layer of box body; 504-a backplane; 6-medicine feeding tube.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Please refer to fig. 1, a slurry shield construction waste slurry productization forming system, which comprises a first-stage dewatering system, a second-stage dewatering system and a material forming system which are sequentially communicated, wherein the first-stage dewatering system, the second-stage dewatering system and the material forming system are all arranged on a support frame 5, the first-stage dewatering system is used for dewatering waste slurry to obtain concentrated slurry, the second-stage dewatering system is used for compressing and dewatering the concentrated slurry to obtain mud cakes, and the material forming system is used for crushing the mud cakes into mud powder and stirring and pressing the mud powder added with additional materials to form bricks. The method comprises the following steps that waste slurry to be treated flows into a primary dewatering system at a certain flow rate, and the primary dewatering system dewaters the waste slurry to obtain concentrated slurry; the concentrated slurry flows into a secondary dewatering system, the secondary dewatering system compresses and dewaters the concentrated slurry, and the concentrated slurry is compressed and formed into a mud cake; and the mud cakes fall into a material forming system, and the mud cakes are crushed and stirred to be pressed into bricks. The brick is formed by multistage dehydration and pressing, so that a baking-free brick product with uniform texture and standard strength can be obtained, the formed brick can be used in places such as municipal road construction, water conservancy construction, slope protection construction, engineering construction and the like, the full-automatic production of the waste slurry is realized, the disposal level of the waste slurry is improved, the characteristics of the waste slurry are effectively utilized, and the added value of the waste slurry is improved.
Referring to fig. 2 and 3, the supporting frame 5 is a three-layer structure and includes a first layer box 501, a second layer box 502, a third layer box 503, and a bottom plate 504 connected to the third layer box 503, a first-stage dewatering system is disposed in the first layer box 501, a second-stage dewatering system is disposed in the second layer box 502, a material forming system is disposed in the third layer box 503, the bottom of the third layer box 503 is connected to the bottom plate 504, and one side of the third layer box 503 connected to the bottom plate 504 is an opening structure.
Referring to fig. 2 and 4, the primary dewatering system includes a flocculation reaction tank 301, a primary dewatering tank 302, and a flocculation reaction assembly 303 and a primary dewatering device 304 respectively disposed in the flocculation reaction tank 301 and the primary dewatering tank 302, the flocculation reaction tank 301 and the primary dewatering tank 302 are both disposed in the first layer box 501, the flocculation reaction tank 301 is communicated with the waste slurry source through a feeding pipe 305, in this embodiment, side walls of one sides of the flocculation reaction tank 301 and the primary dewatering tank 302 are connected with each other, the flocculation reaction tank 301 and the primary dewatering tank 302 are of an integral structure, and can be divided into two chambers by a sealing partition, in other embodiments, the flocculation reaction tank 301 and the primary dewatering tank 302 can be of a split structure. The flocculation reaction component 303 comprises a stirring piece 331 and a fixing frame 332 for fixing the stirring piece 331, the fixing frame 332 is a frame composed of a plurality of grids, and the fixing frame 332 is arranged at the top of the flocculation reaction tank 301 and connected with the inner wall of the flocculation reaction tank 301. The top and the mount 332 of stirring piece 331 are connected, and during the bottom of stirring piece 331 stretched into flocculation reaction tank 301, stirring piece 331 was provided with the puddler of flabellum for the bottom, and stirring piece 331 provided with drive power by the motor, in this embodiment, is provided with 4 stirring pieces 331 to 4 stirring pieces 331 interval sets up. Flocculation reaction tank 301 intercommunication has the charge device that is used for puting in the flocculating agent, and charge device's dosing pipe 6 is connected with mount 332 to the export of dosing pipe 6 is towards flocculation reaction tank 301. The waste mud firstly flows into the flocculation reaction tank 301, the dosing device adds a flocculating agent into the flocculation reaction tank 301, a flow field is formed under the action of the stirring piece 331, the flocculating agent and the waste mud fully react, and the waste mud after flocculation treatment flows into the primary dewatering device 304 for dewatering. The stirring piece 331 is arranged in the invention, so that the flocculating agent can fully react with the waste slurry, the waste slurry is flocculated firstly, the subsequent dewatering treatment can be conveniently and better carried out, and the dewatering treatment efficiency is improved.
The bottom in one-level dewatering pond 302 is equipped with the mount table 323 of the certain angle of slope for the slope of one-level dewatering device 304 sets up on mount table 323, and the one end that the mount table 323 is close to flocculation reaction pond 301 is the bottom, and the one end of keeping away from flocculation reaction pond 301 is the top, and is provided with the mud collecting vat 321 that is used for collecting concentrated mud between the top of mount table 323 and the inner wall in one-level dewatering pond 302. The primary dewatering device 304 is a stacked screw type sludge dewatering machine, the main body of the stacked screw type sludge dewatering machine is composed of multiple fixing rings and moving rings, a screw shaft penetrates through the screw shaft to form a filtering device, the front section is a concentration part, the rear section is a dewatering part, and the concentration and squeezing dewatering work of sludge is completed in one cylinder. One-level dewatering device 304 passes through the base to be connected with mount table 323, and the bottom of one-level dewatering device 304 is dewatering portion and communicates through outlet pipe and outside header tank, and the top of one-level dewatering device 304 is concentrated portion and is provided with out the mud bucket, goes out mud bucket and mud collecting vat 321 intercommunication, in this embodiment, is equipped with 3 one-level dewatering device 304 that set up side by side, 3 one-level dewatering device 304 communicate with flocculation reaction tank 301 respectively. The waste slurry after the flocculation treatment flows into the first-stage dewatering device 304, the waste slurry is firstly concentrated by gravity in the first-stage dewatering device 304, great internal pressure is generated in the first-stage dewatering device 304, the volume is continuously reduced, so that most of moisture of the waste slurry is removed, and the first-stage dewatering device 304 plays a role in preliminary dewatering.
Referring to fig. 2 and 5, the secondary dewatering system includes a secondary dewatering device 401 and a secondary placing box 402 for placing the secondary dewatering device 401, the secondary placing box 402 is disposed in the second-layer box 502, the secondary placing box 402 is disposed below the flocculation reaction tank 301 and the primary dewatering tank 302, the bottoms of the second-layer box 502 and the secondary placing box 402 are provided with a lower mud cake leakage opening 421 for allowing mud cakes to leak to the crushing device 1, and two sides of the lower mud cake leakage opening 421 are provided with obliquely-disposed baffles for making the lower mud cake leakage opening 421 in a conical shape, and the baffles are used for preventing mud cakes from falling into the secondary placing box 402. The secondary dewatering device 401 is a plate-and-frame filter press, plates and frames of the plate-and-frame filter press are arranged alternately, filter cloth is attached to two sides of a filter plate, the plates and the frames are pressed tightly by a pressing device, namely, a filter pressing chamber is formed between the plates and the frames, a small hole is formed in the same position of the middle of the upper ends of the plates and the frames, a channel is formed after the filter pressing, concentrated slurry enters the filter pressing chamber from the channel, grooves are carved on the surface of the filter plate, a pore channel for discharging filtrate is drilled at the lower end of the filter plate, and the filtrate is discharged out of the filter along the grooves and the pore channels through the filter cloth under pressure, so that the concentrated sludge is dewatered. One end of the second-stage dehydration device 401 is communicated with the slurry collecting tank 321 through a slurry discharging pipe 322, and the other end of the second-stage dehydration device 401 is communicated with an external water collecting tank through a water discharging pipe. The concentrated slurry flows into the secondary dewatering device 401, the concentrated slurry flows through the secondary dewatering device 401, the solids stay on the filter cloth of the secondary dewatering device 401 and are gradually accumulated on the filter cloth to form a mud cake through extrusion, the filtrate without the solids flows into an external water collecting tank through a water outlet pipe, and the mud cake leaks into the material forming system. The secondary dewatering device 401 plays a role in further dewatering, so that solid and liquid in the concentrated slurry are separated, and the filter press-extruded mud cake has higher solid content and excellent separation effect, and is more suitable for the invention.
Referring to fig. 2 and 6, the material forming system includes a crushing device 1 and a material mixing and forming device 2 communicated with the crushing device 1, the crushing device 1 includes a first conveyor 101, a soil crusher 102 and a second conveyor 103 which are sequentially communicated, the first conveyor 101, the soil crusher 102 and the second conveyor 103 are all arranged in a third layer box 503, a blocking wall 111 for preventing mud powder from flying out is arranged at the top of the first conveyor 101, and an opening of the blocking wall 111 is matched with a lower mud cake leakage opening 421. The crusher 102 is arranged at one end of the first conveyor 101 close to the opening of the third layer box 503 and is communicated with the first conveyor 101, and the discharge hole of the crusher 102 faces downwards. The second conveyor 103 is obliquely arranged, the bottom end of the second conveyor 103 is positioned below the discharge hole of the soil crusher 102, and the top end of the second conveyor 103 extends out of the third layer box 503. After the second-stage dewatering system dewaters to obtain mud cakes, the mud cakes leak downwards to the first conveyor 101, the first conveyor 101 conveys the mud cakes to the soil crusher 102, the soil crusher 102 crushes the mud cakes into powder and then conveys the powder to the material mixing and forming device 2 through the second conveyor 103, and the material mixing and forming device 2 stirs the powder and additional materials and presses and forms the bricks. Because what obtain after the dehydration of second grade dewatering system is the mud cake, the mud cake is difficult for stirring with plus material, and more difficult shaping is the fragment of brick, consequently sets up the hack machine 102 and can smash the mud cake that forms after the dehydration into the mud powder, more is favorable to plus material mixing, more is favorable to material mixing forming device 2 to be the fragment of brick of high density with the combined material compression molding moreover.
The material mixing and forming device 2 comprises a mixer 201, a third conveyor 202 and a brick press 203 for press-forming the mixed material into bricks, wherein the mixer 201, the third conveyor 202 and the brick press 203 are all arranged on a bottom plate 504, the top end of the second conveyor 103 is communicated with the mixer 201, and in the embodiment, the mixer 201 is a vertical flat mixer 201. The third conveyor 202 is obliquely arranged, the bottom end of the third conveyor 202 is positioned below the discharge port of the mixer 201, the top end of the third conveyor 202 is positioned above the feed port of the brick press 203, and the brick press 203 is a hydraulic brick press 203. The mud cakes are crushed into mud powder by the crushing device 1, and then fall into the mixer 201 to be stirred with an additional material to obtain a mixed material, the additional material is a material which is beneficial to solidification of the mud powder, the mixed material is conveyed to the brick press 203 by the third conveyor 202, and the brick press 203 presses and molds the mixed material into bricks. The mixed materials can be timely conveyed to the brick press 203 through the third conveyor 202, and the mixed materials are prevented from being accumulated in the mixer 201.
In the present embodiment, the first conveyor 101, the second conveyor 103, and the third conveyor 202 are all belt conveyors.
The treatment process of the waste slurry comprises the following steps: 1) the waste mud firstly flows into the flocculation reaction tank 301 through the feeding pipe 305, a flocculating agent with a certain proportion is added into the flocculation reaction tank 301 by the dosing device, and the stirring piece 331 works to fully react the flocculating agent with the waste mud; 2) the primary dewatering device 304 sucks the flocculated waste slurry, dewaters the waste slurry to obtain concentrated slurry, and discharges the concentrated slurry from a discharge hopper of the primary dewatering device 304 and falls into a slurry collecting tank 321; 3) the concentrated slurry flows into a secondary dehydration device 401 through a slurry discharge pipe 322 to obtain a slurry cake, and water filtered by a primary dehydration device 304 and the secondary dehydration device 401 is collected through an external water collecting tank in the process; 4) the mud cakes leak downwards to a first conveyor 101, the first conveyor 101 conveys the mud cakes to a soil pulverizer 102 to be pulverized to obtain mud powder, the mud powder falls onto a second conveyor 103 from a discharge hole of the soil pulverizer 102, the second conveyor 103 conveys the mud powder to a mixer 201, and additional materials are added into the mixer 201; 5) the mixer 201 stirs the mud powder and the additional material to obtain a mixed material, the mixed material falls onto the third conveyor 202, the third conveyor 202 conveys the mixed material to a feed hopper of a brick press 203, and the brick press 203 presses and forms the mixed material into bricks.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a muddy water shield construction abandonment mud productization molding system which characterized in that includes: the device comprises a support frame (5), and a primary dewatering system, a secondary dewatering system and a material forming system which are all arranged on the support frame (5) and are sequentially communicated;
the primary dehydration system is used for dehydrating the waste slurry to obtain concentrated slurry;
the secondary dehydration system is used for compressing and dehydrating the concentrated slurry to obtain a mud cake;
and the material forming system is used for crushing the mud cakes into mud powder, mixing the mud powder with an additional material and pressing the mixture into blocks.
2. The shield mud construction waste slurry productization and formation system according to claim 1, wherein the primary dewatering system comprises a flocculation reaction tank (301), a primary dewatering tank (302), and a flocculation reaction component (303) and a primary dewatering device (304) respectively arranged in the flocculation reaction tank (301) and the primary dewatering tank (302), the flocculation reaction tank (301) and the primary dewatering tank (302) are both arranged on the support frame (5), one end of the flocculation reaction tank (301) is communicated with a waste slurry source through a feed pipe (305), the other end of the flocculation reaction tank (301) is communicated with the primary dewatering device (304), the top of the flocculation reaction tank (301) is communicated with a dosing device for dosing a flocculating agent, the flocculation reaction component (303) is used for stirring the waste slurry and the flocculating agent to perform a flocculation reaction, the primary dewatering device (304) is used for dewatering the flocculated waste slurry to obtain concentrated slurry.
3. The slurry shield construction waste slurry productization and molding system according to claim 2, wherein the flocculation reaction component (303) comprises a stirring piece (331) and a fixing frame (332) for fixing the stirring piece (331), the fixing frame (332) is arranged at the top of the flocculation reaction tank (301), the top end of the stirring piece (331) is connected with the fixing frame (332), and the bottom end of the stirring piece (331) extends into the flocculation reaction tank (301); the flocculation reaction tank (301) is communicated with the primary dewatering device (304).
4. The system for productively forming the waste slurry for shield construction according to claim 2, wherein a slurry collecting tank (321) for collecting the concentrated slurry is arranged in the primary dewatering tank (302), the primary dewatering device (304) is obliquely arranged in the primary dewatering tank (302), the bottom end of the primary dewatering device (304) is communicated with an external water collecting tank through a water outlet pipe, and the top end of the primary dewatering device (304) is communicated with the slurry collecting tank (321); the mud collection tank (321) is communicated with the secondary dewatering system through a mud discharge pipe (322).
5. The production and forming system for the slurry shield construction waste slurry according to claim 1, wherein the secondary dewatering system comprises a secondary dewatering device (401) and a secondary placing box (402) for placing the secondary dewatering device (401), the secondary placing box (402) is arranged on the support frame (5), and the primary dewatering system, the secondary placing box (402) and the material forming system are sequentially arranged on the support frame (5) from top to bottom; one end of the second-stage dewatering device (401) is communicated with the first-stage dewatering system, the other end of the second-stage dewatering device (401) is communicated with an external water collecting tank through a water outlet pipe, the second-stage dewatering device (401) is used for compressing and dewatering concentrated slurry to obtain mud cakes, and the supporting frame (5) and the bottom of the second-stage placing tank (402) are provided with a mud cake lower leakage opening (421) used for enabling the mud cakes to leak to the crushing device (1).
6. The production and forming system for the slurry shield construction waste slurry as recited in claim 5, wherein the secondary dewatering device (401) is a plate-and-frame filter press.
7. The slurry shield construction waste slurry product forming system according to claim 1, wherein the material forming system comprises a crushing device (1) and a material mixing and forming device (2) connected with the crushing device (1), the crushing device (1) and the material mixing and forming device (2) are both arranged on the support frame (5), the crushing device (1) is connected with the secondary dewatering system, the crushing device (1) is used for crushing mud cakes and obtaining mud powder, and the material mixing and forming device (2) is used for mixing the mud powder with an additional material and pressing the mixed material into blocks.
8. The slurry shield construction waste slurry productization and forming system according to claim 7, wherein the crushing device (1) comprises a first conveyor (101), a soil crusher (102) and a second conveyor (103) which are sequentially connected and arranged on the support frame (5), the first conveyor (101) is connected with the secondary dewatering system, the soil crusher (102) is used for crushing a mud cake and obtaining mud powder, and the second conveyor (103) is connected with the material mixing and forming device (2).
9. The slurry shield construction waste slurry productization and molding system according to claim 8, wherein a baffle plate (111) for preventing mud powder from flying out is arranged at the top of the first conveyor (101), the second conveyor (103) is obliquely arranged, the bottom end of the second conveyor (103) is connected with the soil crusher (102), and the top end of the second conveyor (103) is connected with the material mixing and molding device (2).
10. The slurry shield construction waste mud productization and molding system according to claim 7, wherein the material mixing and molding device (2) comprises a mixer (201), a third conveyor (202) and a brick press (203) for press-molding the mixed materials into bricks, the mixer (201), the third conveyor (202) and the brick press (203) are all arranged on the support frame (5), and the mixer (201) is connected with the brick press; the third conveyor (202) is obliquely arranged, the bottom end of the third conveyor (202) is connected with the discharge hole of the crushing device (1), and the top end of the third conveyor (202) is connected with the feed hole of the brick press (203).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210473244.6A CN114804580A (en) | 2022-04-29 | 2022-04-29 | Waste slurry productization forming system for slurry shield construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210473244.6A CN114804580A (en) | 2022-04-29 | 2022-04-29 | Waste slurry productization forming system for slurry shield construction |
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| CN202210473244.6A Pending CN114804580A (en) | 2022-04-29 | 2022-04-29 | Waste slurry productization forming system for slurry shield construction |
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| CN111977920A (en) * | 2020-08-11 | 2020-11-24 | 深圳大学 | Waste slurry treatment equipment |
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| CN208532592U (en) * | 2018-05-15 | 2019-02-22 | 福建金闽再造烟叶发展有限公司 | The sludge treating system of papermaking-method reconstituted tobaccos |
| CN111977920A (en) * | 2020-08-11 | 2020-11-24 | 深圳大学 | Waste slurry treatment equipment |
| CN215943325U (en) * | 2021-01-06 | 2022-03-04 | 杭州渗源环境科技有限公司 | High-water-content slurry dehydration and resource utilization system |
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