CN214060289U - Special slurry treatment device for density-adjustable shield tunneling machine - Google Patents
Special slurry treatment device for density-adjustable shield tunneling machine Download PDFInfo
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- CN214060289U CN214060289U CN202021921654.5U CN202021921654U CN214060289U CN 214060289 U CN214060289 U CN 214060289U CN 202021921654 U CN202021921654 U CN 202021921654U CN 214060289 U CN214060289 U CN 214060289U
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Abstract
The utility model provides a special mud processing apparatus of adjustable density shield structure machine, when the soil pressure mode conversion of shield structure machine is the muddy water mode, after the muddy water cabin replacement finishes, the roll crusher who handles the case top is rotated to the mud, open the unloading gate valve simultaneously, the spiral shell built-in mud is through the roll crusher broken handle back, get into the mud incasement through the feed opening, under the effect of washing the sediment thick liquid pump, low density mud fully dilutes and washes high density mud through advancing a plurality of flushing ports on the thick liquid rinse-system, erode the bottom half simultaneously, form the vortex in the box, make the interior mud of box be in the mobile state. The utility model discloses can prevent that mud from piling up, the cost is lower, is fit for maintaining, and the size is compact, satisfies the complicated operating mode of mode conversion, has good using value.
Description
Technical Field
The utility model relates to a tunnel construction's shield constructs quick-witted field, in particular to adjustable density shield constructs special mud processing apparatus of machine.
Background
In the application of the existing shield machine, the earth pressure shield machine tunneling and the slurry shield machine tunneling construction are mainly used. The slurry shield machine can be used in a jaw crusher under the complex geological conditions of a sand-egg layer and the like, the crushing efficiency is generally 8 times per minute, and the crushing effect is not ideal. The density-variable dual-mode shield machine is rarely applied at present in China, and in the process of converting soil pressure into muddy water, due to the complexity of stratum, thick mud in the screw machine can contain substances such as large-particle stones and boulders, and once the thick mud enters the blades of the slurry pump, the blades of the slurry pump are easily damaged. Although the grid is arranged in the slurry treatment box, the grid is frequently blocked, and the shield tunneling efficiency is seriously influenced. The content of sand and stone in the broken slurry, residue soil and sand is still high, and high-density slurry needs to be fully diluted, so that a slurry pump is facilitated to convey the slurry to the ground through a slurry pipeline for treatment. At present, a belt conveyor is adopted by an earth pressure shield machine to convey muck, and a diverter is adopted by a slurry shield machine, so that the high-density slurry is not diluted and washed, the accumulation of the muck on a grid is caused, and the pumping cannot be carried out.
Chinese patent document CN104879133A discloses a dual-mode shield machine, a dilution box is installed in the middle of the screw conveyer and the crusher of the earth pressure balance system, the dilution box is reconnected to the slurry inlet flushing pipeline, the slag and large stones discharged by the screw conveyer fall into the dilution box, the crushed stones are diluted by the flushing pipeline and sent to the crusher for crushing, the crushed stones are sent to the slurry discharge pump through the slurry discharge pipe, thereby when the shield machine is switched to the slurry water balance mode, the large stones in the earth bin are removed, and the blockage of the slurry discharge pipe by the large stones is avoided.
However, two sets of independent crushers are respectively arranged in the earth pressure balance system and the muddy water balance system, crushed stone blocks and the thin slurry are shunted by means of independent shunt boxes in the muddy water balance system, the stone blocks are conveyed out of the tunnel through the slurry discharge pump, and the thin slurry is pumped back to the earth bin through the reverse circulation slurry pump. The complexity of the system is high, and the use and maintenance cost is increased.
Therefore, a novel slurry treatment integrated device special for the adjustable-density shield tunneling machine is necessary to be designed, the slurry broken stones in the spiral machine can be crushed, and the treated high-density slurry is diluted and washed, so that the working requirements of the soil pressure conversion slurry-water mode and the slurry-water tunneling mode operation are met.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the deficiencies in the prior art, the utility model provides an adjustable density shield constructs special mud processing apparatus of machine suitable for soil pressure mode and muddy water mode.
The technical scheme is as follows: for solving the technical problem, the utility model provides an adjustable density shield constructs special mud processing apparatus of machine, including broken handle equipment and mud processing case, the unloading gate valve department at the screw-driver is connected to broken handle equipment's input, broken handle equipment's discharge gate intercommunication mud case feed inlet, a plurality of ways advance thick liquid rinse-system is arranged to the mud incasement, the grid has been arranged to the mud incasement, the mud discharging hole is arranged to one side of grid, and the opposite side of grid arranges the inspection manhole.
Preferably, the crushing treatment apparatus is a roller crusher.
Preferably, the slurry inlet flushing system comprises an upper flushing system and a lower flushing system which are circularly arranged in a feeding hole and discharging channel of the slurry box, three DN40 flushing holes are uniformly arranged on the periphery of the upper channel, four DN32 flushing holes are uniformly arranged on the periphery of the lower group, the opening directions form inclination angles of 50-60 degrees with the channel direction, the inclination angles are preferably 55 degrees, and the low-concentration slurry and the high-concentration slurry can be fully diluted and mixed.
Preferably, the bottom of the mud treatment box is designed into an inverted triangular cone shape, so that mud in the mud box body can have fluidity during the mixing process.
Preferably, the slurry inlet flushing system comprises two paths of slurry inlet flushing pipelines of DN100 arranged at the front end of the box body, and the slurry falling into the box body is subjected to secondary dilution and flushing to keep the slurry in the box body to flow in a vortex manner.
Preferably, the grid is provided with a grid of 150mm, slurry containing small particles is conveyed to the ground through the grid, slurry containing large particles is blocked, after monitoring and alarming through a pressure feedback system, a discharge gate valve at the upper part of the slurry tank is closed, a manhole device is opened for maintenance, the blocked slurry containing large particles is cleaned, and operation is resumed after cleaning.
The utility model discloses the principle: when the soil pressure mode is converted into the muddy water mode, after the muddy water cabin is replaced, the mud proportion in the screw machine is very high, and the mud also contains large-particle broken stones, and the large-particle stones can block the grids in the mud box, and need often be shut down to carry out manual cleaning, seriously influence the efficiency of construction of the shield machine, in case the stones of these large particle sizes enter into the slurry pump, can damage the blades of the pump. At the moment, the roller type crusher above the slurry treatment box is rotated, the discharging gate valve is opened, and the slurry in the screw machine enters the slurry box through the discharging opening after being crushed by the roller type crusher. Because the mud proportion after the crushing treatment is higher, and very thick glues, is unfavorable for the pump sending, consequently, two way annular flushing lines have been designed specially, and under the effect of washing the sediment thick liquid pump, low density mud fully dilutes and washes high density mud through a plurality of washing pore pair on the pipeline. Two tunnel flushing holes are designed at the bottom, so that the bottom of the box body is washed away, a vortex is formed in the box body, mud in the box body is in a flowing state, the mud is prevented from being accumulated, an overhauling manhole is arranged at the bottom, and the large-particle mud is prevented from being blocked on the grating to form stagnation and discharge. The special mud box has the advantages of low cost, suitability for maintenance, compact size, satisfaction of complex working conditions of mode conversion and good application value.
Has the advantages that: the utility model discloses an adjustable density shield constructs machine provides dedicated mud processing apparatus, can smash the large granule stone, and the high density mud after the breakage can obtain fully diluting and washing through the mud case.
The crushing treatment equipment needs higher torque and rotating speed, so that a stable high-torque hydraulic motor is arranged, and meanwhile, a set of independent hydraulic station is arranged, and the influence of other systems of the shield tunneling machine is avoided. The whole treatment equipment is in a modular design concept, four sets of systems can be arranged in a dispersed mode, space constraints integrated together are greatly saved, system elements are arranged flexibly, and construction is facilitated. Meanwhile, due to the improvement of the crushing capacity, the problem of grid blockage of the muddy water treatment box is greatly relieved, and therefore the tunneling efficiency of the shield tunneling machine is improved.
The muddy water treatment box adopts two-way annular flushing pipeline at the feed opening, and the low-density mud fully dilutes and washes the high-density mud through a plurality of flushing holes on the pipeline. Two tunnel flushing holes are designed at the bottom, so that the bottom of the box body is washed away, a vortex is formed in the box body, mud in the box body is in a flowing state, the mud is prevented from being accumulated, an overhauling manhole is arranged at the bottom, and the large-particle mud is prevented from being blocked on the grating to form stagnation and discharge. The special mud box has the advantages of low cost, suitability for maintenance, compact size, convenience in upgrading and transforming the existing shield machine, satisfaction of complex working conditions of mode conversion and good application value.
In addition to the technical problems addressed by the present invention, the technical features that constitute the technical solutions, and the advantages brought by the technical features of these technical solutions. To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the embodiments of the present invention will be combined below to describe more clearly and completely other technical problems, technical solutions and advantages brought by these technical features that the present invention can solve.
Drawings
Fig. 1 is a schematic overall structure diagram of a special slurry treatment device for an adjustable density shield tunneling machine according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the crushing treatment apparatus of FIG. 1;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a schematic diagram of the configuration of the sludge treatment tank of FIG. 1;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a right side view of FIG. 5;
FIG. 8 is a top view of FIG. 5;
FIG. 9 is a schematic view of the construction of the inner grill of FIG. 5;
in the figure: the device comprises a screw machine 1, a blanking gate valve 11, a crushing treatment device 2, a lubricating system 21, a shaft seal water system 22, a hydraulic system 23, a slurry treatment box 3, a blanking channel 31, an in-channel flushing system 32, a slurry inlet flushing pipeline 33, a slurry discharge port 34, a grating 35 and an inspection manhole 36.
Detailed Description
Example (b):
the special mud treatment device for the adjustable density shield tunneling machine of the embodiment comprises crushing treatment equipment and a mud treatment box as shown in fig. 1.
The crushing treatment equipment 2 is shown in attached figures 1-4, and the equipment comprises four parts in total, namely a roller crusher box body, a shaft seal water system 22, a lubricating system 21 and a hydraulic power system 23. Wherein the upper part and the lower part of the crusher box body are respectively connected with the blanking gate valve 11 and the slurry processing box 3 of the screw machine 1, and the high-pressure hydraulic oil provided by the hydraulic station drives the cutter teeth to rotate through the high-torque motor to form a rotary snap-in forceThe large stones in the slurry are crushed, the stones with the grain diameter of 300mm can be crushed to be within 150mm, the maximum theoretical occlusion capacity can reach 250T/h, and the torque during crushing can reach 6000 N.m, so that the requirement of the shield machine on crushing stones is completely met. As the hydraulic motor drives the two shafts to rotate, the bearing needs to be hermetically lubricated by 1# lithium-based ester, and a blockage monitoring sensor is arranged to protect the bearing. A set of shaft seal water system is arranged at the position of the connecting bridge, and a water tank pump station is about 1m3About, the water amount can reach 3m3And h, providing water seal protection for the lubricating and sealing position, and cooling the oil seal position. The hydraulic station provides powerful power for the crushing treatment equipment, two high-power screw hydraulic pumps are configured to convey high-pressure oil to the hydraulic motor, the highest pressure of the hydraulic oil can reach 22Mpa, the hydraulic motor rotates at the speed of 40-50r/min through the hydraulic oil, the rotating speeds of the two motors rotate in opposite directions, when the torque reaches 9000 N.m when the blockage occurs, reverse rotation is carried out to relieve the difficulty, and the hydraulic station rotates in the forward direction after the difficulty is relieved. The whole system is provided with a plurality of sensors to ensure the normal operation of the equipment.
Starting up operation:
lubricating grease pump starting operation, shaft seal water pump operation, hydraulic motor starting of hydraulic pump station machine, and screw machine opening gate valve
Shutdown operation:
closing screw machine gate, stopping motor and hydraulic pump station, stopping shaft seal water pump and stopping lubricating grease pump
In the design of the box body, an inverted funnel type slurry box is adopted in the past project, and slurry is conveyed to a slurry discharging pump through a slurry discharging pipeline to be pumped to the ground. The sand layer is suitable, but after the density and the viscosity are increased, the phenomenon of blocking and discharging can occur at the narrow opening part of the funnel type mud box. This patent is through carrying out special design to the mud box, and the design scheme is as follows:
as shown in figures 5, 6, 7 and 8, when the soil pressure mode is converted into the muddy water mode, the mud crushed by the crusher enters the mud tank through the feed opening. Because the mud proportion after the crushing treatment is higher, and very thick glues, is unfavorable for the pump sending, consequently, specially designed four ways rinse-system, fully dilute and wash high density mud.
The front two-path flushing system 32 is arranged at the discharging channel 31, mud enters the mud box body through the discharging channel 31, the flushing system 32 in the channel is divided into an upper flushing system and a lower flushing system, three DN40 flushing holes are uniformly distributed on the periphery of the upper flushing system, a group of flushing holes with four DN32 are uniformly distributed on the periphery of the lower flushing system, the hole opening direction and the channel direction form an inclination angle of 55 degrees, and therefore the low-concentration mud can be fully diluted and mixed with the high-concentration mud. In the mixing process, in order to enable the slurry in the slurry box body to have fluidity, the bottom of the box body is designed into an inverted triangular cone, two paths of slurry inlet slurry flushing pipelines 33 of DN100 are arranged at the front end of the box body, the slurry falling into the box body is subjected to secondary dilution and flushing, the flow of the slurry at a slurry discharge port is accelerated under the combined action of the inclined downward and transverse flushing forces of the slurry discharge port, part of the blocked slurry flows to the slurry discharge port along the inclined plane box body, the slurry flows in the closed-loop vortex manner in the box body in the stroke, 150 x 150 grids 35 are arranged at the slurry discharge port 34, as shown in figure 9, the slurry containing small particles is conveyed to the ground through the grids, the slurry containing large particles is blocked, after the monitoring and the alarm are finished through a pressure feedback system, a discharge gate valve at the upper part of the slurry box body is closed, an overhaul manhole 36 is opened, the blocked slurry containing large particles is cleaned, and the operation is resumed after the cleaning.
This patent is fully considered into and is arranged thick liquid flow distribution, arranges thick liquid volume, advances thick liquid flow and corresponding concentration and proportion according to the breaker, calculates through flow watch permanent equal formula, carries out rational distribution to advancing thick liquid washing flow, reaches and washes and the purpose of diluting.
The front part of the slurry treatment box is provided with a slurry outlet, so that slurry accumulated in the front air cushion cabin can be conveniently pumped out, and the mode can be switched to inject the slurry in the box body into the slurry cabin for flushing. The slurry treatment box can also completely have the using function of the diverter of the slurry shield machine in a slurry mode, and can perfectly run in the slurry mode.
Claims (3)
1. The utility model provides a special mud processing apparatus of adjustable density shield constructs machine which characterized in that: the device comprises a crushing treatment device and a slurry treatment box, wherein the input end of the crushing treatment device is connected to a discharge gate valve of a screw conveyor, a discharge hole of the crushing treatment device is communicated with a feed hole of the slurry box, a plurality of slurry inlet flushing systems are arranged in the slurry box, an overhaul manhole is arranged at the bottom of the slurry box, a sludge discharge hole is formed in one side of the slurry box, and a grid is arranged between the overhaul manhole and the sludge discharge hole;
the pulp inlet flushing system comprises an upper flushing system and a lower flushing system which are arranged in the blanking channel in a surrounding manner, a plurality of upper flushing holes are uniformly arranged on the periphery of the upper path, a plurality of lower flushing holes are uniformly arranged on the periphery of the lower path, and the opening directions of the upper flushing holes and the lower flushing holes form an inclination angle of 50-60 degrees with the channel direction;
the section of the blanking channel is rectangular, three upper washing holes are arranged on four sides of the rectangle respectively, four lower washing holes are arranged on four sides of the rectangle respectively, and the upper washing holes and the lower washing holes are staggered with each other;
the bottom of the mud treatment box is designed into an inverted triangular cone.
2. The special mud treatment device for the adjustable-density shield tunneling machine according to claim 1, wherein: the crushing treatment apparatus is a roller crusher.
3. The special mud treatment device for the adjustable-density shield tunneling machine according to claim 1, wherein: the slurry inlet flushing system comprises two slurry inlet flushing pipelines arranged at the front end of the box body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921654.5U CN214060289U (en) | 2020-09-04 | 2020-09-04 | Special slurry treatment device for density-adjustable shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921654.5U CN214060289U (en) | 2020-09-04 | 2020-09-04 | Special slurry treatment device for density-adjustable shield tunneling machine |
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| CN214060289U true CN214060289U (en) | 2021-08-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922578A (en) * | 2022-05-12 | 2022-08-19 | 中铁工程装备集团有限公司 | Mud box with crushing device |
| CN117287211A (en) * | 2023-08-28 | 2023-12-26 | 中铁十四局集团装备有限公司 | Intelligent slurry pump protection device for shield machine, use method and application |
-
2020
- 2020-09-04 CN CN202021921654.5U patent/CN214060289U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922578A (en) * | 2022-05-12 | 2022-08-19 | 中铁工程装备集团有限公司 | Mud box with crushing device |
| CN114922578B (en) * | 2022-05-12 | 2024-05-17 | 中铁工程装备集团有限公司 | Mud box with crushing device |
| CN117287211A (en) * | 2023-08-28 | 2023-12-26 | 中铁十四局集团装备有限公司 | Intelligent slurry pump protection device for shield machine, use method and application |
| CN117287211B (en) * | 2023-08-28 | 2024-04-16 | 中铁十四局集团装备有限公司 | Intelligent slurry pump protection device for shield machine, use method and application |
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