Composite deslagging system of vertical shaft shield tunneling machine

Abstract

The utility model relates to a composite slag discharging system of a vertical shaft shield tunneling machine. The composite slag discharging system is installed on vertical shaft shield tunneling equipment. The system comprises a first mud pump, mud water treatment equipment, slag discharging equipment and bucket lifting equipment, wherein the first slurry pump is mounted on a cutter head of the vertical shaft shield equipment and is used for sucking slurry near the cutter head and pumping the slurry to the slurry treatment equipment; the mud water treatment equipment is used for screening mud, discharging screened slag particles into the slag discharging equipment and discharging the screened mud water to the cutter head; the deslagging equipment comprises a bucket lifting position; the lifting bucket hoisting equipment comprises a lifting bucket; the slag discharging equipment is used for transferring the sludge particles to the lifting buckets located at the lifting bucket positions; and the lifting bucket hoisting equipment is used for hoisting the lifting bucket between the lifting bucket position and the ground. According to the composite deslagging system of the vertical shaft shield tunneling machine, muddy water circulation and bucket lifting are combined, the deslagging difficulty is reduced, the deslagging efficiency is improved, and then the overall construction efficiency of the vertical shaft shield tunneling machine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the vertical shaft shield machine tunneling construction field, especially a vertical shaft shield machine composite deslagging system. BACKGROUND

[0002] The core method of vertical shaft construction whether artificial method or equipment method has only three: excavation, deslagging and supporting. The excavation method is various, but as a whole, it is not the main reason affecting the overall construction efficiency, and the deslagging efficiency has a great influence on the construction efficiency, especially for large and deep vertical shaft construction.

[0003] The deslagging mode of deep well construction mainly has two kinds, one is mud water circulation deslagging, which has the characteristics that the wellbore is filled with bentonite slurry, the mud water is circulated by pumping or air lifting, the rock soil and gravel are wrapped and carried out of the wellbore by the flow rate of mud water, and the rock soil and gravel are separated by the ground mud water treatment system, the mud water returns to the wellbore to continue participating in mud water circulation, the mud water circulation deslagging efficiency is high, the operation is simple, and it is beneficial to the stability of the wellbore, but the construction cost is high, the treatment of mud water after well completion is troublesome, and it is dangerous if large cracks are encountered during construction, and sudden pressure loss in the well wall may cause well collapse, and it is suitable for small diameter deep well.

[0004] The power of mud water circulation has two kinds: pumping or air lifting circulation, both of which make mud water flow quickly, wrap and carry rock soil and gravel by the flow rate of mud water, realize the transportation purpose, and at the same time, the mud slurry will infiltrate into the well wall to form a mud film, which supports the well wall. The pumping and air lifting lift are limited, so it is necessary to ensure that the liquid level in the well cannot be too low, a large amount of water is needed during construction, and if large cracks and karst caves are encountered, a large amount of water will be lost, which will cause the well wall to lose support and the risk of well collapse.

[0005] The hoisting and transporting of the bucket has relatively low technical content, simple operation and wide application. It is generally used for artificial construction, and the bucket is loaded at the bottom of the well and transported to the ground. The disadvantage is that loading equipment is necessary, manual reloading is almost impossible, the cooperation between the vertical shaft shield machine and the bucket is difficult, the space in the shield machine is limited, and the bucket is lifted in the shield machine cutter, so far there is no ideal scheme, and it can even be said to be impossible.

[0006] As described above, the deslagging efficiency of the vertical shaft shield machine has always been a difficult problem, and if this problem is solved, the construction efficiency of the vertical shaft shield machine will be greatly improved. UTILITY MODEL CONTENT

[0007] To solve the above technical problems, the utility model provides a kind of vertical shaft shield machine composite slag discharge system, mud water circulation and bucket hoisting are combined, first, the mud at cutterhead is pumped upwards, then, by mud water treatment system, muck is separated and is transferred to bucket, then, by bucket hoisting, it is hoisted out of well, reduce the difficulty of slagging, improve the efficiency of slagging, and further improve the overall construction efficiency of vertical shaft shield machine.

[0008] The utility model solves its technical problem and adopts the technical scheme: a kind of vertical shaft shield machine composite slag discharge system, it is installed on vertical shaft shield equipment;It includes: first mud pump, mud water treatment equipment, slagging equipment, bucket hoisting equipment;Wherein, the first mud pump is installed on the cutterhead of vertical shaft shield equipment, for sucking the mud near cutterhead, and mud is pumped to mud water treatment equipment;The mud water treatment equipment is used to screen mud, and the screened muck particle is discharged into the slagging equipment, and the screened mud water is discharged to cutterhead;The slagging equipment includes bucket position;The bucket hoisting equipment includes bucket;The slagging equipment is used to send mud particle to the bucket located at bucket position;The bucket hoisting equipment is used to hoist the bucket between bucket position and ground.

[0009] Further, the cutterhead is provided with a mud passage, and the mud passage is provided with a muck suction port at the working face of the cutterhead;A swivel joint is further provided on the cutterhead, one end of the swivel joint is in communication with the mud passage, and the other end is in communication with the inlet end of the first mud pump;The outlet end of the first mud pump is connected with a mud discharge pipeline.

[0010] Further, the mud water treatment equipment includes a mud inlet pipe, a vibrating screen device, a muck discharge channel, a mud tank, a second mud pump and a cyclone separator;The inlet end of the mud inlet pipe is in communication with the first mud pump;The outlet end of the mud inlet pipe is arranged above the vibrating screen device;The muck discharge channel is used to collect the mud and muck particles screened by the vibrating screen device;The mud tank is arranged below the vibrating screen device and is used to collect the mud screened by the vibrating screen device;The inlet end of the second mud pump is arranged at a position close to the bottom end in the mud tank, and the outlet end is in communication with the inlet end of the cyclone separator, for pumping the mud in the mud tank into the cyclone separator;The cyclone separator is used to further screen the mud, and the screened mud and muck particles are discharged into the muck discharge channel, and the screened mud water is discharged to the cutterhead.

[0011] Further, the vibrating screen device includes two layers of screen meshes arranged one above the other, the density of the screen mesh arranged at the upper layer is smaller than the density of the screen mesh arranged at the lower layer, the screen mesh arranged at the upper layer is used to screen out larger-diameter mud and muck particles, and the screen mesh arranged at the lower layer is used to screen out smaller-diameter mud and muck particles;The cyclone separator is used to separate mud and muck particles not smaller than 50 μm.

[0012] Furthermore, the slag discharge device also includes a collection trough, a guide trough located at the bottom of the collection trough, and a gate located between the collection trough and the guide trough; the collection trough is used to receive sludge particles output by the sludge treatment equipment; the outlet end of the guide trough corresponds to the bucket position and is used to discharge sludge particles into the bucket located at the bucket position.

[0013] Furthermore, the bucket hoisting equipment also includes a winch device installed on the ground; the lifting end of the winch device is fixed to the bucket.

[0014] Furthermore, the slag discharge system also includes a conveyor belt installed on the ground; the conveyor belt works in conjunction with a bucket elevator, the bucket elevator being used to discharge sludge particles from the bucket onto the conveyor belt; the conveyor belt is used to transport the sludge particles out.

[0015] The beneficial effects of this utility model are as follows: The composite slag removal system for vertical shaft shield tunneling machines combines slurry circulation and bucket hoisting. First, the slurry at the cutterhead is pumped upward, then the slag is separated by the slurry treatment system and transferred into the bucket, which is then hoisted out of the shaft. This reduces the difficulty of slag removal, improves slag removal efficiency, and thus improves the overall construction efficiency of the vertical shaft shield tunneling machine. Attached Figure Description

[0016] Figure 1 A schematic diagram of a composite slag removal system for a vertical shaft shield tunneling machine, as shown in the embodiment;

[0017] Figure 2 This is a schematic diagram of the cutterhead and mud pump of a composite slag removal system for a vertical shaft shield machine, as shown in an embodiment.

[0018] Figure 3 A schematic diagram of a mud and water treatment device for a composite slag removal system of a vertical shaft shield machine, as an example;

[0019] Figure 4 A schematic diagram of the slag removal equipment of a composite slag removal system for a vertical shaft shield tunneling machine, as shown in the embodiment;

[0020] Figure 5 A schematic diagram of a bucket hoisting device for a composite slag removal system of a vertical shaft shield machine, as shown in this embodiment;

[0021] Among them, 1-cutter head, 2-first mud pump, 3-mud and water treatment equipment, 4-slag discharge equipment, 5-bucket hoisting equipment, 6-transfer belt conveyor, 11-slag suction port, 12-mud passage, 13-rotary joint, 21-slurry discharge pipeline, 31-slurry inlet pipe, 32-vibrating screen equipment, 33-slag discharge channel, 34-slurry tank, 35-second mud pump, 36-cyclone separator, 41-collection trough, 42-gate, 43-guide trough, 44-bucket position, 51-bucket, 52-hoisting equipment. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the utility model, the utility model will be described in further detail below in conjunction with the drawings and embodiments, which are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0023] EMBODIMENT

[0024] Please refer to Figures 1 to 5 The embodiment provides a vertical shaft shield machine composite residue discharging system, which is installed on a vertical shaft shield device; the system comprises a first mud pump 2, a slurry treatment device 3, a residue discharging device 4 and a bucket lifting device 5; wherein the first mud pump 2 is installed on a cutter head 1 of the vertical shaft shield device, is used for sucking mud near the cutter head 1 and pumping the mud to the slurry treatment device 3; the slurry treatment device 3 is used for screening the mud and discharging screened residue particles into the residue discharging device 4 and discharging screened slurry to the cutter head 1; the residue discharging device 4 comprises a bucket position 44; the bucket lifting device 5 comprises a bucket 51; the residue discharging device 4 is used for transferring mud residue particles to the bucket 51 at the bucket position 44; and the bucket lifting device 5 is used for lifting the bucket 51 between the bucket position 44 and the ground.

[0025] Please refer to Figure 2 The cutter head 1 is provided with a mud passage 12, and the mud passage 12 is provided with a residue suction port 11 at the working surface of the cutter head; the cutter head 1 is further provided with a rotary joint 13, one end of the rotary joint 13 is in communication with the mud passage 12, and the other end is in communication with the inlet end of the first mud pump 2; and the outlet end of the first mud pump 2 is connected with a mud discharge pipeline 21.

[0026] Please refer to Figure 3 The slurry treatment device 3 comprises an inlet mud pipe 31, a vibrating screen device 32, a residue discharging passage 33, a slurry tank 34, a second mud pump 35 and a cyclone 36; the inlet end of the inlet mud pipe 31 is in communication with the first mud pump 2; the outlet end of the inlet mud pipe 31 is arranged above the vibrating screen device 32; the residue discharging passage 33 is used for collecting mud residue particles screened by the vibrating screen device 32; the slurry tank 34 is arranged below the vibrating screen device 32 and is used for collecting mud screened by the vibrating screen device 32; the inlet end of the second mud pump 35 is arranged at a position close to the bottom end in the slurry tank 34, the outlet end is in communication with the inlet end of the cyclone 36, and the second mud pump 35 is used for pumping the mud in the slurry tank 34 into the cyclone 36; and the cyclone 36 is used for further screening the mud and discharging screened mud residue particles into the residue discharging passage 33 and discharging screened slurry to the cutter head 1.

[0027] In the vertical shaft shield machine composite sludge discharge system, the vibrating screen device 32 comprises two layers of screen meshes, the density of the screen mesh located at the upper layer is less than the density of the screen mesh located at the lower layer, the screen mesh located at the upper layer is used for screening out larger size sludge particles, and the screen mesh located at the lower layer is used for screening out smaller size sludge particles; and the cyclone 36 is used for separating sludge particles not less than 50 μm.

[0028] Referring again to Figure 4 As shown in the figure, the sludge discharge device 4 further comprises a collecting chute 41, a guide chute 43 located at the bottom side of the collecting chute 41, and a gate 42 located between the collecting chute 41 and the guide chute 43; the collecting chute 41 is used for receiving sludge particles output by the sludge treatment device 3; the outlet end of the guide chute 43 corresponds to the lifting bucket position 44, and is used for discharging sludge particles into the lifting bucket 51 located at the lifting bucket position 44.

[0029] Referring again to Figure 5 As shown in the figure, the lifting bucket hoisting device 5 further comprises a winch device 52 arranged on the ground; the lifting end of the winch device 52 is fixed with the lifting bucket.

[0030] Referring again to Figure 1 As shown in the figure, the sludge discharge system further comprises a transfer belt conveyor 6 arranged on the ground; the transfer belt conveyor 6 cooperates with the lifting bucket hoisting device 5, the lifting bucket hoisting device 5 is used for discharging sludge particles in the lifting bucket to the transfer belt conveyor 6, and the transfer belt conveyor 6 is used for transporting sludge particles out.

[0031] A vertical shaft shield machine composite sludge discharge system according to the embodiment is shown in Figure 1The mud pump is located at the lower part of the device, close to the cutter head, the mud passage is in the cutter head, the suction port is close to the excavation surface, and a scraper for collecting the spoil is arranged at the suction port, during the tunneling process, the cutter head is always submerged in the mud, the liquid level of the mud is close to the mud pump, on the one hand, the suction distance of the mud pump is reduced, and the working efficiency of the mud pump is improved, on the other hand, the cutter head is immersed in the mud, the cutter head can be cooled and abraded, meanwhile, the property of the spoil can be improved, which is helpful for cutting and tunneling, and the service life of the cutter head is increased. When the mud pump works, the mud enters the mud pump through the suction port, the mud passage and the rotary joint, and is discharged through the mud discharge pipeline, the pump shell of the mud pump allows the spoil with a particle size of not more than 200 mm to pass through, the flow rate of the mud can be about 3 m / s, and the mud carrying the spoil is sent to the slurry treatment device. When the mud reaches the slurry treatment device, it is first introduced into the vibrating screen device through the slurry inlet pipe, the screen of the vibrating screen device is divided into two layers, the mud mixed with the spoil is separated from the larger particle size spoil and gravel when passing through the upper layer of the screen, and the smaller particle size particles are separated when passing through the lower layer of the screen, the particles separated by the vibrating screen device are sent into the spoil discharge channel, the screened mud flows into the slurry tank, and then is pumped into the cyclone by the second mud pump, further separates the particles with a size of not less than 50 μm, and sends them into the spoil discharge channel, and the screened slurry is discharged to the cutter head and continues to participate in the slurry circulation; all the separated particles are discharged into the material collecting tank through the spoil discharge channel, and then are sent into the lifting bucket at the lifting position through the material guide groove; two adjacent lifting positions can be arranged, the material guide groove can be horizontally swung, and the spoil particles are poured into the two lifting positions respectively, the gate is closed when the lifting bucket is switched, the two lifting buckets are alternately lifted, and when the lifting bucket is full, the ground winch is started to lift the lifting bucket to the ground, and the spoil in the lifting bucket is poured onto the transfer belt device, and is transported out by the transfer belt device.

[0032] The above embodiments should not limit the utility model in any way, and any technical solution obtained by equivalent replacement or equivalent conversion falls within the protection scope of the utility model.

Claims

1. A composite mucking system for a shaft shield machine, characterized by: The shield device is installed on a vertical shaft; The vertical shaft shield device comprises a first slurry pump (2), a slurry treatment device (3), a residue discharging device (4), and a bucket lifting device (5); the first slurry pump (2) is installed on a cutter head (1) of the vertical shaft shield device, and is used for sucking slurry near the cutter head (1) and pumping the slurry to the slurry treatment device (3); the slurry treatment device (3) is used for screening the slurry and discharging screened residue particles to the residue discharging device (4) and discharging screened slurry to the cutter head (1); the residue discharging device (4) comprises a bucket position (44); the bucket lifting device (5) comprises a bucket (51); the residue discharging device (4) is used for transferring slurry particles to the bucket (51) at the bucket position (44); and the bucket lifting device (5) is used for lifting the bucket (51) between the bucket position (44) and the ground.

2. The composite mucking system of a shaft shield machine according to claim 1, characterized in that: The cutter head (1) is provided with a slurry passage (12), and the slurry passage (12) is provided with a residue suction port (11) at a working surface of the cutter head; the cutter head (1) is further provided with a rotary joint (13), one end of the rotary joint (13) is in communication with the slurry passage (12), and the other end is in communication with an inlet end of the first slurry pump (2); and an outlet end of the first slurry pump (2) is connected with a slurry discharge pipeline (21).

3. The composite mucking system of a shaft shield machine according to claim 1, characterized in that: The slurry treatment device (3) comprises an inlet pipeline (31), a vibrating screen device (32), a residue discharge channel (33), a slurry tank (34), a second slurry pump (35), and a cyclone (36); an inlet end of the inlet pipeline (31) is in communication with the first slurry pump (2); an outlet end of the inlet pipeline (31) is arranged above the vibrating screen device (32); the residue discharge channel (33) is used for collecting slurry particles screened by the vibrating screen device (32); the slurry tank (34) is arranged below the vibrating screen device (32) and is used for collecting slurry screened by the vibrating screen device (32); an inlet end of the second slurry pump (35) is arranged at a position close to a bottom end in the slurry tank (34), an outlet end is in communication with an inlet end of the cyclone (36), and the second slurry pump (35) is used for pumping slurry in the slurry tank (34) to the cyclone (36); and the cyclone (36) is used for further screening the slurry and discharging screened slurry particles to the residue discharge channel (33) and discharging screened slurry to the cutter head (1).

4. The composite mucking system of a shaft shield machine according to claim 3, characterized in that: The vibrating screen device (32) comprises two layers of screen meshes, a screen mesh in an upper layer has a smaller density than a screen mesh in a lower layer, the screen mesh in the upper layer is used for screening out slurry particles with a larger particle size, and the screen mesh in the lower layer is used for screening out slurry particles with a smaller particle size; and the cyclone (36) is used for separating slurry particles not smaller than 50 μm.

5. The composite mucking system of a shaft shield machine according to claim 1, characterized in that: The slag discharging device (4) further comprises a collecting chute (41), a guide chute (43) located at the bottom side of the collecting chute (41), and a gate (42) located between the collecting chute (41) and the guide chute (43); the collecting chute (41) is used for receiving the mud slag particles output by the mud treatment device (3); the outlet end of the guide chute (43) corresponds to a lifting position (44), and is used for discharging the mud slag particles into a lifting bucket (51) located at the lifting position (44).

6. The composite mucking system of a shaft shield machine according to any one of claims 1-5, characterized in that: The lifting bucket hoisting device (5) further comprises a winch device (52) arranged on the ground; the lifting end of the winch device (52) is fixed with the lifting bucket.

7. The composite mucking system of a shaft shield machine according to claim 6, characterized in that: The slag discharging system further comprises a transfer belt conveyor (6) arranged on the ground; the transfer belt conveyor (6) cooperates with the lifting bucket hoisting device (5), the lifting bucket hoisting device (5) is used for discharging the mud slag particles in the lifting bucket to the transfer belt conveyor (6); and the transfer belt conveyor (6) is used for transporting the mud slag particles out.

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