CN108286435B - Filtering stone collecting device and method for slurry shield slurry collecting system - Google Patents
Filtering stone collecting device and method for slurry shield slurry collecting system Download PDFInfo
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- CN108286435B CN108286435B CN201810253400.1A CN201810253400A CN108286435B CN 108286435 B CN108286435 B CN 108286435B CN 201810253400 A CN201810253400 A CN 201810253400A CN 108286435 B CN108286435 B CN 108286435B
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- 239000002002 slurry Substances 0.000 title claims abstract description 178
- 239000004575 stone Substances 0.000 title claims abstract description 98
- 238000001914 filtration Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 79
- 238000007599 discharging Methods 0.000 claims abstract description 59
- 239000002893 slag Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000005641 tunneling Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a filtering stone collecting device and a filtering stone collecting method for a slurry shield slurry collecting system. The method comprises the following steps: closing valves at two ends of a main feeding and discharging pipe in the pipeline extension section, then enabling the slurry in the main feeding and discharging pipe in the pipeline extension section to be hydraulically fed into a slurry collecting tank through an air-entrapping system, starting a slurry collecting pump after the slurry collecting tank meets the liquid level, pumping waste slurry in the slurry collecting tank into a filtering stone collecting tank, filtering the waste slurry in the filtering stone collecting tank, conveying waste liquid to the main feeding and discharging pipe in front of the pipeline extension section, and then entering an air cushion bin, wherein the waste stone is collected in the filtering stone collecting tank. The invention has the advantages of compact structure, small occupied space, reasonable production and manufacturing process, lower cost, good economic applicability, convenient slag stone cleaning and reduced labor intensity of workers.
Description
Technical Field
The invention relates to a slurry shield slurry collecting system, in particular to a stone filtering and collecting device and method for the slurry shield slurry collecting system.
Background
Along with the development of economy, rail transit is gradually popularized and applied in more and more cities. The sharp machine shield machine for excavating subways or public or railway tunnels is also widely applied. The slurry shield machine is accurate in sedimentation control, is widely suitable for stratum, can excavate tunnels crossing the river and the sea, and is increasingly applied to the tunnel industry.
The slurry shield is characterized in that a steel pipe is adopted to discharge slurry and slag stones under pressure, a tunnel is communicated from excavation to the section, two pipelines for conveying fresh slurry and slag slurry are needed, two pipelines for mainly feeding and discharging slurry in the tunnel are needed to be stopped and prolonged for each tunneling distance, a section of steel pipe is respectively added on the main feeding and discharging slurry pipeline, then the main feeding and discharging slurry pipeline is connected by a flange, valves at two ends are needed to be closed in the process of pipeline extension and pipeline addition, and slurry at the section of the disconnected pipeline is pumped to an air cushion bin or a slurry discharging pipeline through a slurry collecting system configured by the shield machine. Because the slurry discharge pipe on the shield machine is pressurized, the slurry is difficult to compress, no space is available for containing redundant slurry, and the slurry generated by extending the pipeline is mainly pumped to the air cushion bin under most conditions. If the waste slurry generated by extending the pipeline is pumped to the main slurry inlet pipeline of the trailer where the slurry collecting system is located and then is conveyed to the air cushion bin, the waste slurry is likely to block part of the slurry inlet pipeline in the tunneling mode once larger stones are present. The existing slurry shield machine adopts a single pipeline to convey the slurry to a single slurry collecting pipe of an air cushion bin from the tail part of the shield machine. In the process, a single pipeline 70-120m is used, the lengths of the shield machines are inconsistent, the relative lengths of the pipelines are inconsistent, when the pipeline is arranged, a plurality of sections of trailers, a splicing machine and Mi Ziliang are needed to pass through, and in the process, hydraulic and fluid pipeline space is occupied, other equipment arrangement is affected, the shield pipelines are messy in routing, resources are wasted, and the production cost of a slurry collecting system is increased.
Disclosure of Invention
The invention provides a filtering stone collecting device and method for a slurry collecting system of a slurry shield, which solve the problem that a nearby pumping pipeline of waste slurry of the slurry collecting system of the slurry shield is easy to block a nozzle in the prior art.
The technical scheme of the invention is realized as follows:
the utility model provides a slurry shield receives thick liquid system and filters stone device, includes filters stone jar, filters stone jar and includes the barrel, barrel and toper unload the slag bath intercommunication, the bottom that the slag bath was unloaded to the toper is equipped with and unloads the cinder notch, the lower part of barrel respectively with wash out the mouth of a river, unload thick liquid pipe intercommunication, the middle part of barrel and waste pulp advance thick liquid pipe intercommunication, the upper portion of barrel respectively with waste pulp play thick liquid pipe, wash the mouth of a river intercommunication, be equipped with the filter grid that is located waste pulp and advance thick liquid pipe upper portion in the barrel, the entrance point that unloads thick liquid pipe is equipped with and blocks the grid.
The barrel body is provided with an observation window positioned at the lower part of the flushing nozzle.
The flushing nozzle is arranged obliquely downwards, the flushing nozzle is arranged vertically downwards, and a plurality of supporting legs are fixed outside the conical slag discharging pool.
The filtering grille is in a V shape, the V-shaped filtering grille is inverted, the waste slurry inlet pipe stretches into the cylinder body, and the end of the waste slurry inlet pipe stretching into the cylinder body is a downward elbow.
The waste pulp discharging pipe is respectively communicated with the main pulp feeding pipe in front of the pipeline extension section and the main pulp discharging pipe in front of the pipeline extension section, the pulp discharging pipe is respectively communicated with the pulp collecting tank and the waste pulp collecting tank, the waste pulp feeding pipe is respectively communicated with the main pulp feeding pipe in the pipeline extension section and the main pulp discharging pipe in the pipeline extension section, the waste pulp collecting tank is respectively communicated with the main pulp feeding pipe in the pipeline extension section and the main pulp discharging pipe in the pipeline extension section, a pulp collecting pump is arranged on a communication pipeline between the pulp collecting tank and the waste pulp feeding pipe, and a pneumatic diaphragm pump is arranged on a communication pipeline between the pulp discharging pipe and the pulp collecting tank.
A method for filtering and collecting stone of a slurry shield slurry collecting system comprises the following steps:
firstly, stopping tunneling of a shield machine, idling a cutter head, cleaning a mud water bin through mud for a main feeding pipe and a mud discharging pipe, and exhausting stone with larger mud water bin and air cushion bin in a best effort mode;
step two, switching the shield machine to a bypass stopping mode, switching to a shutdown pressure maintaining mode, and adjusting the opening and closing states of all valves;
closing valves at two ends of a main feeding and discharging pipe in the pipeline extension section, then hydraulically feeding the slurry in the main feeding and discharging pipe in the pipeline extension section to a slurry collecting tank through an air-entrapping system, starting a slurry collecting pump after the slurry collecting tank meets the liquid level, pumping waste slurry in the slurry collecting tank to a filtering stone collecting tank, filtering the waste slurry in the filtering stone collecting tank, conveying the waste liquid to the main feeding and discharging pipe in front of the pipeline extension section, and then entering an air cushion bin, wherein the waste stone is collected in the filtering stone collecting tank;
and fourthly, after the waste slurry is collected, disconnecting a main slurry inlet pipe and a slurry outlet pipe in the pipeline extension section, adding a steel pipe extension pipeline, adjusting the opening and closing states of all valves, starting a main slurry inlet pump and a slurry outlet pump, switching the shield machine to a bypass mode, and switching the shield machine to a tunneling mode for normal tunneling after the requirement is met.
In the third step, waste pulp in the pulp collecting tank is pumped to a waste pulp inlet pipe of the filtering stone collecting tank, the waste pulp is filtered through a filter grid fixed in the filtering stone collecting tank, filtered waste liquid is conveyed to a main pulp inlet pipe and a main pulp outlet pipe in front of the pipeline extension section through a waste pulp outlet pipe, and waste stones are collected in a conical slag discharging pool of the filtering stone collecting tank.
In the third step, the flushing water pipe orifice of the filtering stone collecting tank is opened intermittently, and the flushing water pipe is used for flushing the filtering grille to prevent the filtering grille from being blocked.
In the third step, whether the stone is fully collected in the filtering stone collecting tank is observed through an observation window on the filtering stone collecting tank, after the stone is fully collected, the stone needs to be cleaned, slurry is discharged before the stone is cleaned, the opening and closing states of all valves are adjusted, compressed air is added through a flushing water pipe of a flushing water gap, slurry in the filtering stone collecting tank is pumped out through a slurry discharging pipe and conveyed to a dirt collecting tank through a pipeline, or a pneumatic diaphragm pump is started, the pneumatic diaphragm pump is pumped to a slurry collecting tank, after the slurry is discharged, the compressed air is closed, then a slag discharging port is opened, the stone naturally falls, the slag discharging port is closed, and then the filtering stone collecting tank is continued.
The invention has the beneficial effects that: waste slurry generated by extending the pipeline can be filtered, the filtered slurry can be pumped to a main slurry inlet pipeline and a main slurry outlet pipeline nearby, and longer pipelines and special interfaces are not needed to be conveyed to an air cushion bin, so that one pipeline with the length of 70-120m can be saved, a plurality of sections of trailers, a splicing machine and a middle shield are not needed to be penetrated, the pipelines and the space are saved, more sufficient space is provided for other fluid and hydraulic arrangement, the arrangement of other equipment is not influenced by independent pipelines, and the interference among the equipment is reduced; and the problem that the nozzle is easy to be blocked when the main pulp inlet pipe is used for pumping the waste pulp nearby is also prevented. The device has the advantages of compact structure, small occupied space, reasonable production and manufacturing process, lower cost, good economic applicability, convenient slag stone cleaning and reduced labor intensity of workers.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a cross-sectional view of the structure of the present invention.
Fig. 3 is a schematic diagram of an embodiment of the present invention.
In the figure: 1. the system comprises a slag tap, 2, a conical slag tap, 3, a viewing window, 4, a flushing water port, 5, a waste slurry inlet pipe, 6, a waste slurry outlet pipe, 7, a flushing water port, 8, a barrel, 9, a slurry tap pipe, 10, a support leg, 11, a blocking grid, 12, a filtering grid, 13, a first valve, 14, a second valve, 15, a third valve, 16, a fourth valve, 17, a fifth valve, 18, a slurry collecting tank, 19, a sixth valve, 20, a slurry collecting pump, 21, seventh valve, 22, a pneumatic diaphragm pump, 23, eighth valve, 24, a filtering stone collecting tank, 25, ninth valve, 26, a first check valve, 27, tenth valve, 28, a second check valve, 29, eleven valve, 30, a main slurry inlet pipe before a pipeline extension, 31, a main slurry outlet pipe before a pipeline extension, 32, third check valve, 33, twelve valves, 34, 35, fourteen, 36, fifteen valves, 37, sixteen nozzles, 38, 39, seventeen, twenty-eight valves, 40, twenty-eight valves, 45, twenty-eight valves, 46, and twenty-eight valves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, a filtering stone collecting device of a slurry shield slurry collecting system comprises a filtering stone collecting tank 24, wherein the filtering stone collecting tank 24 comprises a barrel 8, the barrel 8 is communicated with a conical slag discharging tank 2, a slag discharging port 1 is arranged at the bottom of the conical slag discharging tank 2, the lower part of the barrel 8 is respectively communicated with a flushing water port 4 and a slurry discharging pipe 9, the middle part of the barrel 8 is communicated with a waste slurry inlet pipe 5, the upper part of the barrel 8 is respectively communicated with a waste slurry outlet pipe 6 and a flushing water port 7, a filtering grid 12 positioned at the upper part of the waste slurry inlet pipe 5 is arranged in the barrel 8, and a blocking grid 11 is arranged at the inlet end of the slurry discharging pipe 9.
The cylinder 8 is provided with an observation window 3 positioned at the lower part of the flushing nozzle 4.
The flushing nozzle 4 is arranged obliquely downwards, the flushing nozzle 7 is arranged vertically downwards, and a plurality of supporting legs 10 are fixed outside the conical slag discharging pool 2.
The filtering grating 12 is in a V shape, the V-shaped filtering grating 12 is inverted, the waste slurry inlet pipe 5 stretches into the cylinder 8, and the end of the waste slurry inlet pipe 5 stretching into the cylinder 8 is a downward elbow.
The waste pulp outlet pipe 6 is respectively communicated with the main pulp inlet pipe 30 in front of the pipeline extension section and the main pulp outlet pipe 31 in front of the pipeline extension section, the pulp discharging pipe 9 is respectively communicated with the pulp collecting tank 18 and the waste pulp collecting tank 46, the waste pulp inlet pipe 5 is communicated with the pulp collecting tank 18, the pulp collecting tank 18 is respectively communicated with the main pulp inlet pipe in the pipeline extension section and the main pulp outlet pipe in the pipeline extension section, the waste pulp collecting tank 46 is respectively communicated with the main pulp inlet pipe in the pipeline extension section and the main pulp outlet pipe in the pipeline extension section, the pulp collecting pump 20 is arranged on the communication pipeline between the pulp collecting tank 18 and the waste pulp inlet pipe 5, and the pneumatic diaphragm pump 22 is arranged on the communication pipeline between the pulp discharging pipe 9 and the pulp collecting tank 18.
A method for filtering and collecting stone of a slurry shield slurry collecting system comprises the following steps:
firstly, stopping tunneling of a shield machine, idling a cutter head, cleaning a mud water bin through mud for a main feeding pipe and a mud discharging pipe, and exhausting stone with larger mud water bin and air cushion bin in a best effort mode;
step two, switching the shield machine to a bypass stopping mode, switching to a shutdown pressure maintaining mode, and adjusting the opening and closing states of all valves;
closing valves at two ends of a main feeding and discharging pipe in the pipeline extension section, then hydraulically feeding the slurry in the main feeding and discharging pipe in the pipeline extension section to a slurry collecting tank through an air-entrapping system, starting a slurry collecting pump after the slurry collecting tank meets the liquid level, pumping waste slurry in the slurry collecting tank to a filtering stone collecting tank, filtering the waste slurry in the filtering stone collecting tank, conveying the waste liquid to the main feeding and discharging pipe in front of the pipeline extension section, and then entering an air cushion bin, wherein the waste stone is collected in the filtering stone collecting tank;
and fourthly, after the waste slurry is collected, disconnecting the main slurry inlet pipe and the slurry outlet pipe in the pipeline extension section, adding the steel pipe extension pipeline, then adjusting the opening and closing states of all valves, starting the main slurry inlet pump and the slurry outlet pump, switching the shield machine to a bypass mode, and switching the shield machine to a tunneling mode for normal tunneling after the requirements are met.
In the third step, waste pulp in the pulp collecting tank is pumped to a waste pulp inlet pipe of the filtering stone collecting tank, the waste pulp is filtered through a filter grid fixed in the filtering stone collecting tank, filtered waste liquid is conveyed to a main pulp inlet pipe and a main pulp outlet pipe in front of the pipeline extension section through a waste pulp outlet pipe, and waste stones are collected in a conical slag discharging pool of the filtering stone collecting tank.
In the third step, the flushing water pipe orifice of the filtering stone collecting tank is opened intermittently, and the flushing water pipe is used for flushing the filtering grille to prevent the filtering grille from being blocked.
In the third step, whether the stone is fully collected in the filtering stone collecting tank is observed through an observation window on the filtering stone collecting tank, after the stone is fully collected, the stone needs to be cleaned, slurry is discharged before the stone is cleaned, the opening and closing states of all valves are adjusted, compressed air is added through a flushing water pipe of a flushing water gap, slurry in the filtering stone collecting tank is pumped out through a slurry discharging pipe and conveyed to a dirt collecting tank through a pipeline, or a pneumatic diaphragm pump is started, the pneumatic diaphragm pump is pumped to a slurry collecting tank, after the slurry is discharged, the compressed air is closed, then a slag discharging port is opened, the stone naturally falls, the slag discharging port is closed, and then the filtering stone collecting tank is continued.
The V-shaped filter grating is welded on the inner wall of the cylinder, the size of grating holes on the filter grating is controlled within 20mm multiplied by 20mm (aperture multiplied by hole depth), and the aperture of grating holes on the blocking grating is controlled within 10 mm. Because the restriction of filtering grid, big stone can't pass through the grid, can prevent to get into thick liquid pipe jam nozzle, because big stone can't pass through and be collected by the device, concentrated processing.
The concrete stone-collecting filtering method comprises the following steps:
before the pipe is replaced and the slurry is collected, the shield machine stops tunneling, idles the cutter head, uses fresh slurry to clean the slurry bin, and discharges the larger stone blocks of the slurry bin and the air cushion bin in best effort.
The slurry shield is switched to a bypass stopping mode, then switched to a shutdown pressure maintaining mode, and the opening states of valves in the slurry collecting system are adjusted (sixteen valve 38, seventeen valve 39, twenty-two valve 44, tenth valve 27, eleven valve 29, fourteen valve 35 and fifteen valve 36 are opened, and eighth valve 23, eighteen valve 40, nineteen valve 41, twenty-one valve 43, twenty-valve 42 and thirteen valve 34 are in closed states).
The method comprises the steps of starting the slurry collection, closing a main slurry inlet pipe in a required pipeline extension section and a first valve 13 and a second valve 14 at two ends of the main slurry outlet pipe in the pipeline extension section, pressing slurry of the main slurry inlet pipe and the slurry outlet pipe in the pipeline extension section to a slurry collection tank 18 through an air-entrapping system, starting a slurry collection pump 20 after the slurry collection tank meets the liquid level, adjusting the opening states of valves in the slurry collection system (opening a third valve 15, a fourth valve 16, a fifth valve 17, a sixth valve 19, a seventh valve 21, a ninth valve 25, a second valve 45 and a twelve valve 33), pumping waste slurry generated by pipe replacement to a filtering stone collection tank, filtering the waste slurry, conveying the waste slurry to a main slurry inlet pipe 30 in front of the pipeline extension section and a main slurry outlet pipe 31 in front of the pipeline extension section, and then entering an air cushion bin, and preventing nozzles on the main slurry inlet pipe in front of the pipeline extension section from being blocked due to the fact that the waste slurry is collected in the filtering stone collection tank.
After the waste slurry is collected, disconnecting the pipeline, adding a steel pipe extension pipeline, adjusting the opening states of valves (closing a tenth valve 27, an eleventh valve 29, a third valve 15, a fourth valve 16 and a twelve valve 33, opening a first valve 13 and a second valve 14) in the slurry collecting system, starting a main slurry inlet and outlet pump, switching a slurry shield to a bypass mode, and switching the shield to a tunneling mode for normal tunneling after the slurry shield reaches the requirement. The first check valve 26, the second check valve 28 and the third check valve 32 all function to ensure unidirectional flow through the conduit.
The flushing pipe is opened intermittently during use to prevent the V-shaped grille 12 from being blocked.
Whether the stone collecting box is full of stones or not is observed through the observation window, and the stones need to be cleaned after the stone collecting box is full of stones; before cleaning, the eighth valve 23, the twenty-valve 42 and the nineteenth valve 41 are opened, compressed air is added through a flushing water pipe, the slurry is pumped out and conveyed to the dirt collecting box 46 through a pipeline, or the pneumatic diaphragm pump 22 is started and pumped to a slurry collecting tank, and after the slurry is discharged, the compressed air is closed; then the eighteen valves 40 of the slag discharging ports are opened, the stones naturally fall down, the valves are closed, and then the stone collection is filtered in the slurry collecting system.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The utility model provides a slurry shield receives thick liquid system and filters stone device, includes filtration stone collecting tank (24), and filtration stone collecting tank (24) include barrel (8), its characterized in that: the device is characterized in that the cylinder body (8) is communicated with the conical slag discharging pool (2), a slag discharging port (1) is formed in the bottom of the conical slag discharging pool (2), the lower part of the cylinder body (8) is respectively communicated with the flushing water port (4) and the slurry discharging pipe (9), the middle part of the cylinder body (8) is communicated with the waste slurry inlet pipe (5), the upper part of the cylinder body (8) is respectively communicated with the waste slurry outlet pipe (6) and the flushing water port (7), a filter grid (12) positioned at the upper part of the waste slurry inlet pipe (5) is arranged in the cylinder body (8), and a blocking grid (11) is arranged at the inlet end of the slurry discharging pipe (9);
the waste pulp discharging pipe (6) is respectively communicated with the main pulp feeding pipe (30) in front of the pipeline extending section and the main pulp discharging pipe (31) in front of the pipeline extending section, the pulp discharging pipe (9) is respectively communicated with the pulp collecting tank (18) and the waste pulp collecting tank (46), the waste pulp feeding pipe (5) is communicated with the pulp collecting tank (18), the pulp collecting tank (18) is respectively communicated with the main pulp feeding pipe in the pipeline extending section and the main pulp discharging pipe in the pipeline extending section, the waste pulp collecting tank (46) is respectively communicated with the main pulp feeding pipe in the pipeline extending section and the main pulp discharging pipe in the pipeline extending section, the pulp collecting pump (20) is arranged on a communicating pipeline between the pulp collecting tank (18) and the waste pulp feeding pipe (5), and the air work diaphragm pump (22) is arranged on a communicating pipeline between the pulp discharging pipe (9) and the pulp collecting tank (18).
2. The filter stone-collecting device of a slurry shield slurry collecting system according to claim 1, wherein: the cylinder body (8) is provided with an observation window (3) positioned at the lower part of the flushing nozzle (4).
3. The filter stone-collecting device of a slurry shield slurry collecting system according to claim 1, wherein: the flushing nozzle (4) is arranged obliquely downwards, the flushing nozzle (7) is arranged vertically downwards, and a plurality of supporting legs (10) are fixed outside the conical slag discharging pool (2).
4. The filter stone-collecting device of a slurry shield slurry collecting system according to claim 1, wherein: the filter grating (12) is of a V shape, the V-shaped filter grating (12) is inverted, the waste slurry inlet pipe (5) stretches into the cylinder body (8), and the end of the waste slurry inlet pipe (5) stretching into the cylinder body (8) is a downward elbow.
5. A working method of the filtering stone-collecting device of the slurry shield slurry collecting system according to any one of claims 1 to 4, which is characterized by comprising the following steps:
firstly, stopping tunneling of a shield machine, idling a cutter head, cleaning a mud water bin through mud for a main feeding pipe and a mud discharging pipe, and exhausting stone with larger mud water bin and air cushion bin in a best effort mode;
step two, switching the shield machine to a bypass mode, switching to a shutdown pressure maintaining mode, and adjusting the opening and closing states of all valves;
closing valves at two ends of a main feeding and discharging pipe in the pipeline extension section, then hydraulically feeding the slurry in the main feeding and discharging pipe in the pipeline extension section to a slurry collecting tank through an air-entrapping system, starting a slurry collecting pump after the slurry collecting tank meets the liquid level, pumping waste slurry in the slurry collecting tank to a filtering stone collecting tank, filtering the waste slurry in the filtering stone collecting tank, conveying the waste liquid to the main feeding and discharging pipe in front of the pipeline extension section, and then entering an air cushion bin, wherein the waste stone is collected in the filtering stone collecting tank;
and fourthly, after the waste slurry is collected, disconnecting a main slurry inlet pipe and a slurry outlet pipe in the pipeline extension section, adding a steel pipe extension pipeline, adjusting the opening and closing states of all valves, starting a main slurry inlet pump and a slurry outlet pump, switching the shield machine to a bypass mode, and switching the shield machine to a tunneling mode for normal tunneling after the requirement is met.
6. The working method of the filtering stone collecting device of the slurry shield slurry collecting system according to claim 5, which is characterized in that: in the third step, waste pulp in the pulp collecting tank is pumped to a waste pulp inlet pipe of the filtering stone collecting tank, the waste pulp is filtered through a filter grid fixed in the filtering stone collecting tank, filtered waste liquid is conveyed to a main pulp inlet pipe and a main pulp outlet pipe in front of the pipeline extension section through a waste pulp outlet pipe, and waste stones are collected in a conical slag discharging pool of the filtering stone collecting tank.
7. The working method of the filtering stone collecting device of the slurry shield slurry collecting system according to claim 5, which is characterized in that: in the third step, the flushing water pipe orifice of the filtering stone collecting tank is opened intermittently, and the flushing water pipe is used for flushing the filtering grille to prevent the filtering grille from being blocked.
8. The working method of the filtering stone collecting device of the slurry shield slurry collecting system according to claim 5, which is characterized in that: in the third step, whether the stone is fully collected in the filtering stone collecting tank is observed through an observation window on the filtering stone collecting tank, after the stone is fully collected, the stone needs to be cleaned, slurry is discharged before the stone is cleaned, the opening and closing states of all valves are adjusted, compressed air is added through a flushing water pipe of a flushing water gap, slurry in the filtering stone collecting tank is pumped out through a slurry discharging pipe and conveyed to a dirt collecting tank through a pipeline, or a pneumatic diaphragm pump is started, the pneumatic diaphragm pump is pumped to a slurry collecting tank, after the slurry is discharged, the compressed air is closed, then a slag discharging port is opened, the stone naturally falls, the slag discharging port is closed, and then the filtering stone collecting tank is continued.
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| CN201810253400.1A CN108286435B (en) | 2018-03-26 | 2018-03-26 | Filtering stone collecting device and method for slurry shield slurry collecting system |
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| CN201810253400.1A CN108286435B (en) | 2018-03-26 | 2018-03-26 | Filtering stone collecting device and method for slurry shield slurry collecting system |
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| CN208106425U (en) * | 2018-03-26 | 2018-11-16 | 中铁工程装备集团有限公司 | A kind of slurry shield receipts slurry system filtering collection stone device |
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2018
- 2018-03-26 CN CN201810253400.1A patent/CN108286435B/en active Active
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|---|---|---|---|---|
| CN104314070A (en) * | 2014-10-16 | 2015-01-28 | 海南大学 | Shield tunneling construction method for n-shaped underground diaphragm wall |
| CN204691778U (en) * | 2015-06-09 | 2015-10-07 | 中铁工程装备集团有限公司 | A kind of muddy water circulatory system that can directly and indirectly control |
| CN205386498U (en) * | 2016-03-24 | 2016-07-20 | 宁波易通建设有限公司 | Swirler that is used for purification of drilling mud during drilling |
| CN208106425U (en) * | 2018-03-26 | 2018-11-16 | 中铁工程装备集团有限公司 | A kind of slurry shield receipts slurry system filtering collection stone device |
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