CN112250274A - Slurry treatment system and method for performing solid-liquid separation on shield waste slurry - Google Patents
Slurry treatment system and method for performing solid-liquid separation on shield waste slurry Download PDFInfo
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- CN112250274A CN112250274A CN202011004982.3A CN202011004982A CN112250274A CN 112250274 A CN112250274 A CN 112250274A CN 202011004982 A CN202011004982 A CN 202011004982A CN 112250274 A CN112250274 A CN 112250274A
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- 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
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Abstract
The invention discloses a slurry treatment system and a method for carrying out solid-liquid separation on shield waste slurry, wherein the system comprises: a slurry delivery pipe; a first screening device; a first swirling and screening device; a second swirling and screening device; a sedimentation tank; a slag storage field. The method comprises the following steps: step 1, a shield slurry discharge pump provides power to convey waste slurry generated by a shield machine to a first sieving device through a slurry conveying pipe; step 2, the slurry filtered by the first sieving device enters a first swirler and a first dewatering screen for treatment; and 3, pumping the slurry into a second cyclone by a second slurry pump, enabling overflow slurry of the second cyclone to flow into a sedimentation tank, conveying oversize residue soil of the second dewatering screen to a residue storage field, and conveying undersize slurry of the second dewatering screen to a third slurry storage tank. The system and the method thereof effectively separate the solid phase and the liquid phase by a multi-stage and fractional separation mode, so that the shield waste slurry is reused.
Description
Technical Field
The invention relates to the technical field of shield slurry treatment, in particular to a slurry treatment system and a slurry treatment method for carrying out solid-liquid separation on shield waste slurry.
Background
The slurry-water balanced shield method can generate a large amount of slurry when the construction is carried out on a muddy siltstone stratum, the municipal tunnel construction is limited by various factors such as urban traffic, buildings, environmental protection and the like, and the construction site is generally very compact, so the waste slurry generated in the tunneling process must be timely and effectively treated, meanwhile, the shield waste slurry has the characteristics of large specific gravity, more fine particles, strong viscosity, difficult settlement and the like, and the direct discharge can block a sewage discharge pipeline, pollute water and influence the natural environment.
The traditional shield slurry treatment is to select one or more modes to carry out treatment within a limited treatment measure range, correspondingly, more modes are to directly adopt mud-water separation equipment to carry out screening, high-concentration overflow slurry is directly discarded, or lime, flocculating agent and other agents are added after the high-concentration overflow slurry enters a sedimentation tank to carry out sedimentation separation, or filter press equipment is adopted to carry out re-separation on the overflow slurry.
For example, the patent application document with the chinese patent application No. CN201911281072.7 discloses a trailing type solid-liquid separation system and a separation method for a shield machine, which includes a bogie frame arranged behind the shield machine, the bogie frame is provided with the solid-liquid separation system; the structure of the solid-liquid separation system is that the undersize of the pre-sieve is connected with the inlet of the cyclone, the heavy phase outlet of the cyclone is connected with the dewatering sieve, and the undersize of the dewatering sieve is connected with the pulp storage tank; the slurry storage tank is connected with the inlet of the cyclone; a supernatant outlet of the cyclone is connected with an overflow tank, an overflow port of the overflow tank is connected with a slurry purifying tank, and the slurry purifying tank is provided with a second sewage pump to return purified slurry to the shield system; oversize products of the pre-screening and the dewatering screen are conveyed to a slag bucket truck, an online viscosity sensor is arranged on a pipeline near a dredge pump, and a pulling type solid-liquid separation system and a ground mud-water treatment system are switched.
The prior art discloses a pulling type solid-liquid separation system and a pulling type solid-liquid separation method for a shield tunneling machine, and in the actual application process, the solid-liquid separation is not thorough in the prior art, and the separated liquid phase cannot directly enter the shield tunneling machine for secondary application.
Based on the technical problems in the prior art, the invention provides a slurry treatment system and a slurry treatment method for performing solid-liquid separation on shield waste slurry.
Disclosure of Invention
The invention provides a slurry treatment system and a slurry treatment method for carrying out solid-liquid separation on shield waste slurry, which effectively separate a solid phase from a liquid phase in a multi-stage and fractional separation mode to realize reutilization of the shield waste slurry.
In order to achieve the purpose, the invention adopts the following technical scheme:
a slurry treatment system for performing solid-liquid separation on shield waste slurry comprises:
the slurry conveying pipe is communicated with a waste slurry tank of the shield tunneling machine to obtain shield waste slurry;
the first sieving device is communicated with the output end of the slurry conveying pipe to receive the shield waste slurry and sieve the shield waste slurry;
the first cyclone and screening device is communicated with the first screening device to obtain the slurry filtered by the first screening device;
the second rotational flow and screening device is communicated with the first rotational flow and screening device to receive the slurry treated by the first rotational flow and screening device;
the sedimentation tank is communicated with the second rotational flow and screening device to receive overflow slurry of the second rotational flow and screening device;
and the slag storage field is communicated with the first sieving device, the first rotational flow and sieving device and the second rotational flow and sieving device so as to receive the discharged slag soil.
Further, the residue soil on the screen of the first screening device is conveyed to the residue storage field, and the slurry under the screen of the first screening device is conveyed to the first slurry storage tank.
Further, first device that sieves includes the shale shaker base, fixed setting spring holder, fixed setting on the shale shaker base are in shale shaker box on the spring holder, with the mud pan feeding mouth of the one end intercommunication of shale shaker box, with first discharge gate and the second discharge gate and the fixed setting of the other end intercommunication of shale shaker box are in vibrating motor on the shale shaker box, wherein inlay on the shale shaker box and be equipped with the shale shaker sieve, the higher authority of first discharge gate intercommunication and shale shaker sieve, the second discharge gate communicate in the lower extreme of shale shaker box.
Furthermore, the vibrating motor is installed on the vibrating screen box body through a motor fixing seat fixedly arranged at the top end of the vibrating screen box body.
Furthermore, the vibrating motor is installed on the vibrating screen box body through a motor fixing seat fixedly arranged at the bottom end of the vibrating screen box body.
Further, first whirl and the device that sieves include first swirler, first dewatering screen, second mud storage tank and first sediment stuff pump, the underflow exit tube of first swirler communicate in first dewatering screen, the undersize mud communicating pipe of first dewatering screen communicate in second mud storage tank, second mud storage tank communicate in first sediment stuff pump, first sediment stuff pump communicate in first swirler, wherein, second mud storage tank communicate in first mud storage tank, the oversize soil of first dewatering screen carry to store up the sediment field.
First swirler includes the swirler body, communicates in the inlet of carrying swirler body one side, communicates in the liquid outlet of carrying swirler body top, communicates in the row's cinder notch of carrying swirler body bottom, fixed the setting is in filter screen bucket in the swirler body, fix guide plate and fixed the setting on the filter screen bucket are in supporting legs on the swirler body, the inlet communicate in the thick liquid that the second discharge gate was carried in order to receive, the liquid outlet communicate in first dewatering screen.
Further, the second cyclone and sieving device comprises a second cyclone, a second dewatering screen, a third slurry storage tank and a second slurry pump, wherein an underflow pipe of the second cyclone is communicated with the second dewatering screen, an undersize slurry communicating pipe of the second dewatering screen is communicated with the third slurry storage tank, the third slurry storage tank is communicated with the second slurry pump, the first slurry pump is communicated with the first cyclone, the second slurry storage tank is communicated with the first cyclone, oversize soil of the second dewatering screen is conveyed to the slurry storage field, and overflow slurry of the second cyclone is conveyed to the sedimentation tank.
Further, the sieve plate of the first sieving device is 5 meshes, the sieve plate of the first dewatering sieve is 18 meshes, and the sieve plate of the second dewatering sieve is 50 meshes.
Further, the cutting point of the first swirler is 0.074mm, and the cutting point of the second swirler is 0.02 mm.
The invention also provides a slurry treatment method for carrying out solid-liquid separation on the shield waste slurry, which comprises the following steps:
step 1, a shield slurry discharging pump provides power to convey waste slurry generated by a shield machine to a first sieving device through a slurry conveying pipe, the first sieving device filters the input waste slurry, residue soil on a screen of the first sieving device is conveyed to a residue storage field through a conveying device, and undersize slurry under the screen of the first sieving device falls into a first slurry storage groove;
step 2, with the increase of the slurry in the first slurry storage tank, the slurry flows into a second slurry storage tank, the slurry flowing into the second slurry storage tank flows into a first slurry pump by virtue of gravity, the first slurry pump pumps the slurry into a first cyclone, the overflow slurry of the first cyclone flows into a third slurry storage tank, the underflow slurry of the first cyclone flows into a first dewatering screen, the undersize slurry of the first dewatering screen flows into the second slurry storage tank, and the oversize soil of the first dewatering screen is sent into the slurry storage field;
and 3, the overflow slurry received by the third slurry storage tank flows into a second slurry pump, the second slurry pump pumps the slurry into a second cyclone, the underflow of the second cyclone flows into a second dewatering screen, the overflow slurry of the second cyclone flows into a sedimentation tank, the oversize soil of the second dewatering screen is conveyed to the slurry storage field, and the undersize slurry of the second dewatering screen is conveyed to a third slurry storage tank.
Further, in step 1, the residue soil on the screen of the first sieving device is conveyed to the residue storage yard through a screw conveyor.
Further, in step 2, the underflow of the first cyclone flows into the first dewatering screen by means of pumping; and undersize slurry of the first dewatering screen flows into the second slurry storage tank in a pumping mode.
Compared with the prior art, the invention has the following advantages:
1. according to the slurry treatment system for performing solid-liquid separation on the shield waste slurry, the shield waste slurry is treated in multiple stages and times through the matching arrangement of the first sieving device, the first rotational flow and sieving device and the second rotational flow and sieving device, so that the solid phase and the liquid phase of the shield waste slurry are separated, and the treated slurry can be continuously recycled;
2. according to the slurry treatment system for performing solid-liquid separation on the shield waste slurry, the useful solid phase in the slurry is effectively reserved through the matched arrangement of the first sieving device, the first dewatering screen and the second dewatering screen;
3. according to the slurry treatment method for performing solid-liquid separation on shield waste slurry, slurry particles are classified and screened in a two-stage cyclone treatment mode, so that the load of each stage of cyclone is reduced;
4. according to the slurry treatment method for performing solid-liquid separation on the shield waste slurry, the solid-liquid separation in the shield waste slurry is realized through the steps of conveying the muck to the slag storage field and flowing the overflow slurry into the sedimentation tank.
Drawings
FIG. 1 is a schematic structural diagram of a slurry treatment system for performing solid-liquid separation on shield waste slurry according to an embodiment of the invention;
fig. 2 is a schematic structural view of a first screening device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a first cyclone according to an embodiment of the present invention.
In the figure: 100-slurry conveying pipe, 200-first sieving device, 300-first rotational flow and sieving device, 301-first swirler, 302-first dewatering screen, 303-second slurry storage tank, 304-first slurry pump, 400-second rotational flow and sieving device, 401-second swirler, 402-second dewatering screen, 403-third slurry storage tank, 404-second slurry pump, 500-slurry storage field, 600-first slurry storage tank, 800-sedimentation tank, 1-vibrating screen base, 2-spring seat, 3-vibrating screen box body, 4-slurry inlet, 5-first discharge port, 6-second discharge port, 7-vibrating motor, 8-vibrating screen plate, 9-motor fixing seat, 11-swirler body, 12-liquid inlet, 13-a liquid outlet, 14-a slag discharge port, 15-a filter screen barrel, 16-a guide plate and 17-supporting legs.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, it being understood that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
Examples
As shown in fig. 1, a slurry treatment system for performing solid-liquid separation on shield waste slurry includes:
the slurry conveying pipe 100 is communicated with a waste slurry groove of the shield tunneling machine to obtain shield waste slurry;
the first sieving device 200 is communicated with the output end of the slurry conveying pipe 100 to receive the shield waste slurry and sieve the shield waste slurry;
a first swirling and screening device 300 communicated with the first screening device 200 to obtain the slurry filtered through the first screening device 200;
a second swirling and screening device 400 communicating with the first swirling and screening device 300 to receive the slurry processed by the first swirling and screening device 300;
a settling tank 800 in communication with the second swirling and screening device 400 for receiving overflow slurry of the second swirling and screening device 400;
and a slag storage yard 500 communicated with the first sieving device 200, the first swirling and sieving device 300 and the second swirling and sieving device 400 to receive the discharged slag soil.
The slurry conveying pipe 100 obtains shield waste slurry through a shield slurry discharge pump, and pours the shield waste slurry to the first sieving device 200 for first solid-liquid filtration, and filters out residue soil with the particle size larger than 4 mm.
The residue soil on the screen of the first sieving device 200 is conveyed to the residue storage yard, and the slurry under the screen of the first sieving device 200 is conveyed to the first slurry storage tank 600.
First whirl and sieving mechanism 300 includes first swirler 301, first dewatering screen 302, second stock chest 303 and first sediment stuff pump 304, the underflow outlet pipe of first swirler 301 communicate in first dewatering screen 302, the undersize mud communicating pipe of first dewatering screen 302 communicate in second stock chest 303, second stock chest 303 communicate in first sediment stuff pump 304, first sediment stuff pump 304 communicate in first swirler 301, wherein, second stock chest 303 communicate in first stock chest 600, the oversize dregs of first dewatering screen 302 carry to stock chest 500.
Wherein, first device 200 that sieves adopts two vibrating motor's vibrations mode, through adjusting first device 200 that sieves inside eccentric block changes the motor shock power in order to adapt to the required vibrations power of different stratum dregs of sieve screening.
As shown in fig. 2, the first sieving device 200 includes a vibrating screen base 1, a fixed setting a spring seat 2 on the vibrating screen base 1, a fixed setting are in vibrating screen box 3 on the spring seat 2, a mud feeding port 4 communicated with one end of the vibrating screen box 3, a first discharging port 5 and a second discharging port 6 communicated with the other end of the vibrating screen box 3, and a fixed setting are in a vibrating motor 7 on the vibrating screen box 3, wherein a vibrating screen plate 8 is embedded on the vibrating screen box 3, the first discharging port 5 is communicated with the upper surface of the vibrating screen plate 8, and the second discharging port 6 is communicated with the lower end of the vibrating screen box 3.
The vibrating motor 7 is installed on the vibrating screen box body 3 through a motor fixing seat 9 fixedly arranged at the top end of the vibrating screen box body 3.
As an improvement, the vibration motor 7 is installed on the vibrating screen box 3 through a motor fixing seat 9 fixedly arranged at the bottom end of the vibrating screen box 3.
As shown in fig. 3, the first cyclone 301 includes a cyclone body 11, a liquid inlet 12 communicated with one side end of the conveying cyclone body 11, a liquid outlet 13 communicated with the top end of the conveying cyclone body 11, a slag discharge port 14 communicated with the bottom end of the conveying cyclone body 11, a filter screen bucket 15 fixedly disposed in the cyclone body 11, a guide plate 16 fixed on the filter screen bucket 15, and a support leg 17 fixedly disposed on the cyclone body 11, wherein the liquid inlet 12 is communicated with the second discharge port 6 to receive the slurry conveyed by the second discharge port 6, and the liquid outlet 13 is communicated with the first dewatering screen 302.
The second swirling and screening apparatus 400 includes a second cyclone 401, a second dewatering screen 402, a third slurry storage tank 403 and a second slurry pump 404, an underflow pipe of the second cyclone 401 is communicated with the second dewatering screen 402, an undersize slurry communicating pipe of the second dewatering screen 402 is communicated with the third slurry storage tank 403, the third slurry storage tank 403 is communicated with the second slurry pump 404, the first slurry pump 304 is communicated with the first cyclone 401, wherein the second slurry storage tank 303 is communicated with the first cyclone 401, the oversize soil of the second dewatering screen 402 is conveyed to the slurry storage area 500, and the overflow slurry of the second cyclone 401 is conveyed to the settling pond 800.
The screen plate of the first screening device 200 is 5 meshes, the screen plate of the first dewatering screen 302 is 18 meshes, and the screen plate of the second dewatering screen 402 is 50 meshes.
The cutting point of the first swirler 301 is 0.074mm, and the cutting point of the second swirler 401 is 0.02 mm.
As a modification, the upper part of the sedimentation tank 800 is also communicated with a new slurry preparation tank (not shown), and the new slurry preparation tank is communicated with the tunnel face of the shield machine to realize the circulation of slurry.
The slurry treatment method for carrying out solid-liquid separation on shield waste slurry comprises the following steps:
step 1, a shield slurry discharging pump provides power to convey waste slurry generated by a shield machine to a first sieving device 200 through a slurry conveying pipe 100, the first sieving device 200 filters the input waste slurry, residue soil on a screen of the first sieving device 200 is conveyed to a residue storage field 500 through a conveying device, and undersize slurry under the screen of the first sieving device 200 falls into a first slurry storage tank 600;
step 2, as the slurry in the first slurry storage tank 600 increases, the slurry flows into a second slurry storage tank 303, the slurry flowing into the second slurry storage tank 303 flows into a first slurry pump 304 by gravity, the first slurry pump 304 pumps the slurry into a first cyclone 301, the overflow slurry of the first cyclone 301 flows into a third slurry storage tank 403, the underflow slurry of the first cyclone 301 flows into a first dewatering screen 302, the undersize slurry of the first dewatering screen 302 flows into the second slurry storage tank 303, and the oversize soil of the first dewatering screen 302 is sent into the slurry storage yard 500;
step 3, the overflow slurry received by the third slurry storage tank 403 flows into a second slurry pump 404, the second slurry pump 404 pumps the slurry into a second cyclone 401, the underflow of the second cyclone 401 flows into a second dewatering screen 402, the overflow slurry of the second cyclone 401 flows into a sedimentation tank 800, the oversize soil of the second dewatering screen 402 is conveyed to the slurry storage yard 500, and the undersize slurry of the second dewatering screen 402 is conveyed into the third slurry storage tank 403;
and 4, conveying the slurry in the sedimentation tank 800 to a new slurry preparation system, and conveying the prepared slurry to a shield tunneling machine by the new slurry preparation system.
In step 1 of this embodiment, the dregs accumulated in the dreg storage yard 500 need to be cleaned periodically to ensure that the first sieving device 200, the first dewatering screen 302 and the second dewatering screen 402 continuously discharge dregs with different particle sizes to the dreg storage yard 500.
In step 1, the residue soil on the screen of the first sieving device 200 is conveyed to the residue storage yard 500 by a screw conveyor; in step 2, the residue soil on the screen of the first dewatering screen 302 is conveyed to the residue storage yard 500 by a screw conveyor; in step 3, the 402-mesh residue soil of the second dewatering screen is conveyed to the residue storage yard 500 through a screw conveyor.
In step 2, the underflow of the first cyclone 301 flows into the first dewatering screen 302 by pumping; the undersize slurry of the first dewatering screen 302 flows into the second slurry tank 303 by pumping.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The utility model provides a carry out shield structure waste slurry to mud processing system of solid-liquid separation which characterized in that includes:
the slurry conveying pipe is communicated with a waste slurry tank of the shield tunneling machine to obtain shield waste slurry;
the first sieving device is communicated with the output end of the slurry conveying pipe to receive the shield waste slurry and sieve the shield waste slurry;
the first cyclone and screening device is communicated with the first screening device to obtain the slurry filtered by the first screening device;
the second rotational flow and screening device is communicated with the first rotational flow and screening device to receive the slurry treated by the first rotational flow and screening device;
the sedimentation tank is communicated with the second rotational flow and screening device to receive overflow slurry of the second rotational flow and screening device;
the slag storage field is communicated with the first sieving device, the first rotational flow and sieving device and the second rotational flow and sieving device to receive the discharged slag soil;
wherein, first device of sieving includes shale shaker base, fixed setting spring holder, the fixed setting on the shale shaker base are in shale shaker box on the spring holder, with the mud pan feeding mouth of the one end intercommunication of shale shaker box, with first discharge gate and the second discharge gate and the fixed setting of the other end intercommunication of shale shaker box are in vibrating motor on the shale shaker box, wherein inlay on the shale shaker box and be equipped with the shale shaker sieve, the higher authority of first discharge gate intercommunication and shale shaker sieve, the second discharge gate communicate in the lower extreme of shale shaker box, vibrating motor is through fixed setting up the motor fixing base on shale shaker box top is installed on the shale shaker box.
2. The slurry treatment system for performing solid-liquid separation on shield waste slurry according to claim 1, wherein oversize soil of the first screening device is conveyed to the residue storage yard, and undersize slurry of the first screening device is conveyed to the first slurry storage tank.
3. The slurry treatment system for performing solid-liquid separation on shield waste slurry according to claim 2, wherein the first cyclone and sieving device comprises a first cyclone, a first dewatering screen, a second slurry storage tank and a first slurry pump, an underflow pipe of the first cyclone is communicated with the first dewatering screen, an undersize slurry communicating pipe of the first dewatering screen is communicated with the second slurry storage tank, the second slurry storage tank is communicated with the first slurry pump, the first slurry pump is communicated with the first cyclone, the second slurry storage tank is communicated with the first slurry storage tank, and oversize soil of the first dewatering screen is conveyed to the slurry storage yard; first swirler includes the swirler body, communicates in the inlet of carrying swirler body one side, communicates in the liquid outlet of carrying swirler body top, communicates in the row's cinder notch of carrying swirler body bottom, fixed the setting is in filter screen bucket in the swirler body, fix guide plate and fixed the setting on the filter screen bucket are in supporting legs on the swirler body, the inlet communicate in the thick liquid that the second discharge gate was carried in order to receive, the liquid outlet communicate in first dewatering screen.
4. The slurry treatment system for performing solid-liquid separation on shield waste slurry according to claim 3, wherein the second cyclone and sieving device comprises a second cyclone, a second dewatering screen, a third slurry storage tank and a second slurry pump, an underflow pipe of the second cyclone is communicated with the second dewatering screen, an undersize slurry communicating pipe of the second dewatering screen is communicated with the third slurry storage tank, the third slurry storage tank is communicated with the second slurry pump, the first slurry pump is communicated with the first cyclone, wherein the second slurry storage tank is communicated with the first cyclone, oversize soil of the second dewatering screen is conveyed to the slurry storage yard, and overflow slurry of the second cyclone is conveyed to the sedimentation tank.
5. The slurry treatment system for performing solid-liquid separation on shield waste slurry according to claim 4, wherein the sieve plate of the first sieving device is 5 meshes, the sieve plate of the first dewatering sieve is 18 meshes, and the sieve plate of the second dewatering sieve is 50 meshes.
6. The slurry treatment system for performing solid-liquid separation on shield waste slurry according to claim 5, wherein the cutting point of the first cyclone is 0.074mm, and the cutting point of the second cyclone is 0.02 mm.
7. A slurry treatment method for performing solid-liquid separation on shield waste slurry is characterized by comprising the following steps:
step 1, a shield slurry discharging pump provides power to convey waste slurry generated by a shield machine to a first sieving device through a slurry conveying pipe, the first sieving device filters the input waste slurry, residue soil on a screen of the first sieving device is conveyed to a residue storage field through a conveying device, and undersize slurry under the screen of the first sieving device falls into a first slurry storage groove;
step 2, with the increase of the slurry in the first slurry storage tank, the slurry flows into a second slurry storage tank, the slurry flowing into the second slurry storage tank flows into a first slurry pump by virtue of gravity, the first slurry pump pumps the slurry into a first cyclone, the overflow slurry of the first cyclone flows into a third slurry storage tank, the underflow slurry of the first cyclone flows into a first dewatering screen, the undersize slurry of the first dewatering screen flows into the second slurry storage tank, and the oversize soil of the first dewatering screen is sent into the slurry storage field;
and 3, the overflow slurry received by the third slurry storage tank flows into a second slurry pump, the second slurry pump pumps the slurry into a second cyclone, the underflow of the second cyclone flows into a second dewatering screen, the overflow slurry of the second cyclone flows into a sedimentation tank, the oversize soil of the second dewatering screen is conveyed to the slurry storage field, and the undersize slurry of the second dewatering screen is conveyed to a third slurry storage tank.
8. The method for treating slurry for performing solid-liquid separation on shield waste slurry according to claim 7, wherein in the step 1, the residue soil on the screen of the first sieving device is conveyed to the residue storage yard by a screw conveyor.
9. The method for treating slurry for solid-liquid separation of shield waste slurry according to claim 7, wherein in step 2, the underflow of the first cyclone is pumped into the first dewatering screen; and undersize slurry of the first dewatering screen flows into the second slurry storage tank in a pumping mode.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113384948A (en) * | 2021-06-16 | 2021-09-14 | 中铁隧道集团二处有限公司 | Slurry dewatering vibrating screen for slurry balance shield |
| CN113526703A (en) * | 2021-07-19 | 2021-10-22 | 中铁十四局集团大盾构工程有限公司 | Slurry shield tunnel slurry treatment and recycling method |
| CN114017054A (en) * | 2021-10-15 | 2022-02-08 | 康明克斯（北京）机电设备有限公司 | Slurry water treatment equipment that can automatically adapt to the mud flow of the mud-water balance shield |
| CN115095342A (en) * | 2022-06-09 | 2022-09-23 | 中铁隧道局集团有限公司 | Shield muck pulping system and preparation method of synchronous grouting liquid |
| CN119971608A (en) * | 2025-01-10 | 2025-05-13 | 中铁十五局集团有限公司 | A shield slag multi-stage processing and separation device |
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| CN113384948A (en) * | 2021-06-16 | 2021-09-14 | 中铁隧道集团二处有限公司 | Slurry dewatering vibrating screen for slurry balance shield |
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| CN115095342A (en) * | 2022-06-09 | 2022-09-23 | 中铁隧道局集团有限公司 | Shield muck pulping system and preparation method of synchronous grouting liquid |
| CN119971608A (en) * | 2025-01-10 | 2025-05-13 | 中铁十五局集团有限公司 | A shield slag multi-stage processing and separation device |
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Application publication date: 20210122 |