Shield tunneling machine residue slipping device for fine separation of residue soil and slurry

Abstract

The invention relates to the technical field of shield tunneling machines, and discloses a slag slipping device of a shield tunneling machine, which is used for fine separation of muck and slurry and is characterized in that a box body is used for being connected with a cutterhead of the shield tunneling machine; the material guiding pipe is arranged in the box body, and the feeding end of the material guiding pipe is communicated with the discharging opening of the cutter head; the first separation mechanism is used for primarily separating large-particle muck and slurry containing fine sand, and discharging the large-particle muck out of the box body; the second separation mechanism is used for carrying out secondary separation on the fine sand-containing slurry separated by the first separation mechanism to obtain fine sand and slurry; the third separation mechanism is used for extruding and dewatering the fine sand separated by the second separation mechanism to obtain slightly dry fine sand and slurry, and discharging the slightly dry fine sand out of the box body; according to the residue soil and slurry separation device, the separation efficiency of residue soil and slurry is remarkably improved, the separated slurry is purer and convenient to recycle and discharge, and meanwhile, dry fine sand is also convenient to transport and treat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shield machines, in particular to a shield machine slagging device for fine separation of slag and slurry. BACKGROUND

[0002] In the existing shield machine construction process, effective separation of slag and slurry is a key link. However, the traditional shield machine slagging device often has the problem of poor separation efficiency of slag and slurry. This is mainly due to the design limitations of the traditional device, which makes it difficult for slag and slurry to be fully separated during the separation process, thereby affecting the construction efficiency and engineering quality. Specifically, the traditional device may only use a one-stage or two-stage separation method, which is difficult to finely separate slag and slurry of different particle sizes, especially for the separation of fine sand and slurry, which is not effective and may cause a large amount of fine sand in the slurry, affecting the reuse and discharge of the slurry. SUMMARY

[0003] The purpose of the present application is to provide a shield machine slagging device for fine separation of slag and slurry, which aims to solve or improve at least one of the above technical problems.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a shield machine slagging device for fine separation of slag and slurry, comprising:

[0005] a box body for connecting with a cutter head of a shield machine;

[0006] a guide pipe arranged in the box body, the guide pipe being in communication with the discharge port of the cutter head at the inlet end thereof;

[0007] a first separation mechanism arranged in the box body, the first separation mechanism being in communication with the inlet end of the guide pipe, the first separation mechanism being used for preliminarily separating large-particle slag and slurry containing fine sand, and discharging the large-particle slag out of the box body;

[0008] a second separation mechanism arranged in the box body, the second separation mechanism being used for twice separating the slurry containing fine sand separated by the first separation mechanism to obtain fine sand and slurry;

[0009] a third separation mechanism arranged in the box body, the third separation mechanism being used for extruding and dehydrating the fine sand separated by the second separation mechanism to obtain dry fine sand and slurry, and discharging the dry fine sand out of the box body;

[0010] a collection box for collecting the separated slurry and discharging the box body.

[0011] Optionally, the first separation mechanism comprises:

[0012] A first mounting frame is fixedly connected in the box body, and one end of the first mounting frame extends out of the box body;

[0013] A plurality of separation rods are rotatably connected in the first mounting frame through shaft rods side by side, and gaps are formed between adjacent two separation rods and between two end separation rods and the first mounting frame. The side walls of the separation rods are fixedly connected with a plurality of push plates.

[0014] A driving assembly is configured to drive the plurality of shaft rods to rotate.

[0015] A pushing assembly is configured to push the large-particle muck on the plurality of separation rods out of the box body.

[0016] Optionally, the driving assembly comprises:

[0017] A first motor is fixedly installed on the first mounting frame.

[0018] A multi-section worm is connected with the output shaft of the first motor, and a plurality of worm gears are engaged with the worm. The plurality of worm gears are coaxially fixedly connected with the plurality of shaft rods.

[0019] Optionally, the pushing assembly comprises:

[0020] A pair of transmission rollers are rotatably connected in the first mounting frame, and one of the transmission rollers is rotatably connected with the worm through a transmission assembly.

[0021] Two groups of transmission wheels are arranged on the pair of transmission rollers, respectively.

[0022] A pair of transmission belts are transmissionally matched between the two groups of transmission wheels and located on both sides of the plurality of separation rods. A plurality of connecting rods are fixedly connected on the transmission belts, a plurality of push rods are fixedly connected on the connecting rods, and the plurality of push rods on the connecting rods correspond to the gaps between the adjacent two separation rods and the two end separation rods and the first mounting frame, respectively.

[0023] Optionally, the transmission assembly comprises:

[0024] A pair of gears are engaged with each other, one of the gears is coaxially fixedly connected with the worm, and the other gear is coaxially fixedly connected with the transmission roller.

[0025] Optionally, a plurality of branch pipelines are fixedly connected on the first mounting frame along the direction of the large-particle muck. A plurality of nozzles are connected on the branch pipelines and face the separation rods. A main pipeline is connected with the branch pipelines, and the main pipeline extends out of the box body and is connected with a water source.

[0026] Optionally, the second separation mechanism comprises:

[0027] The second mounting frame is fixedly connected at an angle inside the housing;

[0028] A filter screen is fixedly connected to the second mounting frame. One end of the filter screen is provided with a discharge port, which is connected to the third separation mechanism through a connecting pipe.

[0029] Optionally, the second mounting frame is provided with multiple vibration devices.

[0030] Optionally, the third separation mechanism includes:

[0031] A screw conveyor assembly is fixedly installed inside the housing, with one end of the screw conveyor assembly extending out of the housing and connected to the connecting pipe;

[0032] The second motor is fixedly installed inside the housing, and the output shaft of the second motor is connected to the auger assembly.

[0033] This invention discloses the following technical effects: This invention employs a three-stage filtration method, achieving gradual and refined separation of slag and slurry through the establishment of a first separation mechanism, a second separation mechanism, and a third separation mechanism. Specifically, the first separation mechanism is used to initially separate large-particle slag and slurry containing fine sand; the second separation mechanism further separates the slurry containing fine sand, yielding fine sand and a purer slurry; the third separation mechanism squeezes and dewaters the fine sand, yielding slightly drier fine sand and slurry. This three-stage filtration method significantly improves the separation efficiency of slag and slurry, resulting in a purer slurry that is easier to reuse and discharge, while the slightly drier fine sand is also easier to transport and handle. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the first separation mechanism of the present invention;

[0037] Figure 3 for Figure 2 A magnified view of part A in the image;

[0038] Figure 4 This is a schematic diagram of the pusher assembly structure of the present invention.

[0039] Figure 5 This is a schematic diagram of the second separation mechanism of the present invention.

[0040] In the diagram: 1. Housing; 2. Cutter head; 3. Feed guide pipe; 4. First separation mechanism; 41. First mounting frame; 42. Separating rod; 43. Shaft; 44. Pulley; 45. First motor; 46. Worm gear; 47. Worm; 48. Transmission roller; 49. Transmission wheel; 410. Transmission belt; 411. Connecting rod; 412. Push rod; 413. Gear; 414. Branch pipe; 415. Nozzle; 416. Main pipe; 5. Second separation mechanism; 51. Second mounting frame; 52. Filter screen; 53. Discharge port; 54. Connecting pipe; 55. Vibration device; 6. Third separation mechanism; 61. Screw assembly; 62. Second motor; 7. Collection box. Detailed Implementation

[0041] Existing Chinese patent CN221322411U discloses a slag discharge device for tunnel boring machines (TBMs) for fine separation of slag and slurry. After mixing to a certain extent, the control valve on the discharge pipe is opened, and the slurry pump is started. The slurry mixed in the mixing tank enters the conveying pipe through the discharge pipe, thereby handling the slag produced by the TBM body. The whole operation is convenient and simple, and the slag produced by the TBM body can be uniformly discharged, which effectively improves the efficiency of slag discharge and ensures the smooth progress of the TBM body construction. The tunnel boring machine (TBM) can perform tunnel excavation. The conveying mechanism transports the excavated soil from the drill bit operation to the mixing tank. The water-adding mechanism adds water to the mixing tank, and the mixing mechanism mixes the excavated soil and water to produce slurry. This facilitates the slurry removal process from the TBM. The discharge mechanism removes the mixed slurry. The entire operation is convenient and simple, allowing for consistent slurry removal from the TBM, effectively improving efficiency. The feeding frame and the second conical tooth work together to rotate the feeding frame when the mixing shaft rotates. This mixes the excavated soil at the bottom of the mixing tank and facilitates subsequent slurry discharge. The scraper scrapes the soil adhering to the inner wall of the mixing tank, improving the mixing effect of the excavated soil and water. A control valve allows for convenient control of the discharge pipe.

[0042] An existing Chinese patent discloses a slag-retaining device for a tunnel boring machine, CN117759267A. Through the configuration of components such as an electric push rod, a moving plate, a receiving cavity, a hydraulic telescopic rod, a baffle, a motor, a rotating rod, a stirring rod, a support rod, an inclined plate, a buffer strip, and a conveyor belt, it can effectively solve the problems of existing slag-retaining devices in use, such as the inability to conveniently and quickly separate rocks and mud, and the fact that the separated rocks fall directly onto the conveyor belt and generate a certain impact force, which makes the conveyor belt prone to damage. When the tunnel boring machine (TBM) cutterhead is excavating, it generates a large amount of gravel and mud. This gravel and mud slide onto the surface of the extension plate via the inclined blocks and flow onto the surface of the baffle. Ultimately, the mud flows through the filter plate into the inner box of the TBM on the corresponding side. At this point, the gravel is blocked by the filter plate, thus separating the mud from the gravel. The operator can then start the two sets of motors. The operation of the two sets of motors causes the two sets of rotating rods to rotate, which in turn drives the corresponding stirring rods to rotate. The rotation of the two sets of stirring rods accelerates the discharge of mud into the first conveying pipe. Once all the mud has been discharged... The crushed stone falls onto the surface of the inclined plate under the action of gravity. With the help of several sets of buffer strips, the crushed stone can be slowed down, so that it can fall onto the surface of the conveyor belt at a low speed. At this time, the conveyor belt can be started. The working principle of the conveyor belt is existing technology, so it will not be described in detail here. The crushed stone on the surface of the conveyor belt can be transported to the surface of the overlapping plate under the action of the conveyor belt, so that the crushed stone can be transported into the interior of the second conveying pipe and discharged outward accordingly.

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figures 1 to 5 This invention provides a shield tunneling machine slag chute for fine separation of slag and mud, comprising:

[0046] Box 1 is used to connect with the cutterhead 2 of the tunnel boring machine;

[0047] The feed pipe 3 is installed inside the housing 1, and the feed end of the feed pipe 3 is connected to the discharge port of the cutter head 2.

[0048] The first separation mechanism 4 is installed inside the box 1. The first separation mechanism 4 is connected to the feed end of the guide pipe 3. The first separation mechanism 4 is used to initially separate large particles of slag and mud containing fine sand, and discharge the large particles of slag from the box 1.

[0049] The second separation mechanism 5 is installed inside the housing 1. The second separation mechanism 5 is used to perform a second separation of the mud containing fine sand separated by the first separation mechanism 4 to obtain fine sand and mud.

[0050] The third separation mechanism 6 is installed inside the box 1. The third separation mechanism 6 is used to squeeze and dewater the fine sand separated by the second separation mechanism 5 to obtain slightly dry fine sand and mud, and discharge the slightly dry fine sand from the box 1.

[0051] Collection box 7 is used to collect the separated mud and discharge it from box 1.

[0052] Furthermore, the large particles of slag in the first separation unit 4 are gravel, pebbles and coarse sand, forming the slag skeleton structure of large particles with a particle size range of >4.75mm.

[0053] Furthermore, the fine sand in the second separation unit 5 consists of medium sand, fine sand, and some extremely fine sand, which are the main particles affecting the viscosity and dewatering performance of the mud, with a particle size range of 0.075mm-4.75mm.

[0054] Furthermore, the moisture content of the relatively dry fine sand at the separation point of the third separation unit 6 is <25%.

[0055] In one embodiment of the present invention, the first separation mechanism 4 includes:

[0056] The first mounting frame 41 is fixedly connected inside the housing 1, with one end of the first mounting frame 41 extending out of the housing 1;

[0057] Multiple separating rods 42 are rotatably connected side-by-side to the first mounting frame 41 via shafts 43. There are gaps between adjacent separating rods 42 and the two separating rods 42 at both ends and the first mounting frame 41. Multiple levers 44 are fixedly connected to the side walls of the separating rods 42.

[0058] A drive assembly for driving multiple shafts 43 to rotate;

[0059] The material pushing assembly is used to push large particles of slag from multiple separating rods 42 out of the box 1.

[0060] When the slag and slurry mixture discharged through the feed pipe 3 falls onto multiple separating rods 42, the slurry containing fine sand can continue to fall onto the second separating mechanism 5 through the gaps between the separating rods 42. Large slag particles are intercepted on multiple separating rods 42. At the same time, the drive assembly drives the shaft 43 to rotate, causing multiple separating rods 42 to rotate synchronously. The paddles 44 on the multiple separating rods 42 turn over the large slag particles on the separating rods 42, accelerating the falling off of the slurry adhering to them. Meanwhile, the pusher assembly pushes the large slag particles towards the outlet of the first mounting frame 41, thereby discharging them from the box.

[0061] In one embodiment of the present invention, the driving component includes:

[0062] The first motor 45 is fixedly mounted on the first mounting frame 41;

[0063] The multi-segment worm gear 47 is connected to the output shaft of the first motor 45. Multiple worm wheels 46 are meshed on the worm gear 47, and the multiple worm wheels 46 are coaxially and fixedly connected to multiple shafts 43.

[0064] The first motor 45 drives the worm gear 47 to rotate, which in turn drives multiple shafts 43 to rotate synchronously, achieving synchronous and stable rotation of multiple separating rods 42. This design ensures that the rotation speed and force of the separating rods 42 are consistent, improving the separation effect and the stability of equipment operation.

[0065] In one embodiment of the present invention, the feeding assembly includes:

[0066] A pair of drive rollers 48 are rotatably connected within the first mounting frame 41, and one of the drive rollers 48 is connected to the worm gear 47 via a transmission assembly.

[0067] Two sets of transmission wheels 49 are respectively mounted on a pair of transmission rollers 48;

[0068] A pair of transmission belts 410 are connected between two sets of transmission pulleys 49 and located on both sides of multiple separating rods 42. Multiple connecting rods 411 are fixedly connected to the transmission belts 410, and multiple push rods 412 are fixedly connected to the connecting rods 411. The multiple push rods 412 on the connecting rods 411 correspond one-to-one with the gaps between the two adjacent separating rods 42 and the gaps between the two separating rods 42 at both ends and the first mounting frame 41.

[0069] The transmission assembly drives the transmission roller 48 to rotate, thereby causing the two sets of transmission wheels 49 and the transmission belt 410 to rotate. The rotation of the transmission belt 410 drives the connecting rod 411 to move, thereby pushing the large particles of slag into the gap through the push rod 412 on the connecting rod 411, pushing the large particles of slag on the separating rod 42 out of the box 1.

[0070] In one embodiment of the present invention, the transmission assembly includes:

[0071] A pair of meshing gears 413, one of which is coaxially and fixedly connected to the worm 47, and the other gear 413 is coaxially and fixedly connected to the transmission roller 48.

[0072] A pair of meshing gears 413 are used to transmit power between the worm gear 47 and the drive roller 48. This design is simple in structure, has high transmission efficiency, and is easy to maintain and replace.

[0073] In one embodiment of the present invention, a plurality of branch pipes 414 are fixedly connected to the first mounting frame 41 along the direction of travel of large particles of slag. A plurality of nozzles 415 facing the separation rod 42 are connected to the branch pipes 414. The plurality of branch pipes 414 are connected to a main pipe 416. The main pipe 416 extends out of the housing 1 and is connected to a water source.

[0074] The branch pipe 414 and nozzle 415 are designed to spray clean water or cleaning fluid onto the separating rod 42, helping to clean residual slag and mud from the separating rod and the deflector plate. This design not only improves the separation effect but also extends the service life of the equipment and reduces the frequency of cleaning and maintenance.

[0075] Furthermore, the water source is an external water tank and pump, which is existing technology and will not be elaborated further here.

[0076] In one embodiment of the present invention, the second separation mechanism 5 includes:

[0077] The second mounting frame 51 is fixedly connected at an angle inside the housing 1;

[0078] The filter screen 52 is fixedly connected to the second mounting frame 51. One end of the filter screen 52 is provided with a discharge port 53, which is connected to the third separation mechanism 6 through a connecting pipe 54.

[0079] The second separation unit 5, through the design of the filter screen 52, can further separate the slurry containing fine sand. The pore size of the filter screen 52 can be adjusted according to actual needs to achieve effective separation of fine sand of different particle sizes. This design improves the purity of the slurry, facilitating reuse and discharge.

[0080] In one embodiment of the present invention, a plurality of vibration devices 55 are provided on the second mounting frame 51.

[0081] The vibration device 55 is designed to cause the filter screen 52 to vibrate, thereby accelerating the speed at which the slurry passes through the filter screen 52 and preventing the filter screen 52 from clogging. This design improves separation efficiency and ensures continuous and stable operation of the equipment.

[0082] In one embodiment of the present invention, the third separation mechanism 6 includes:

[0083] Screw assembly 61 is fixedly installed inside the box. One end of screw assembly 61 is open and extends out of the box 1. Screw assembly 61 is connected to the connecting pipe 54.

[0084] The second motor 62 is fixedly installed inside the housing 1, and the output shaft of the second motor 62 is connected to the auger assembly 61.

[0085] The third separation mechanism 6, through the cooperation of the auger assembly 61 and the second motor 62, squeezes and dewaters the fine sand. This design produces relatively dry fine sand, which is convenient for transportation and handling. At the same time, the design of the auger assembly 61 can also prevent the fine sand from accumulating and clogging inside the housing 1.

[0086] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0087] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A shield machine slag chute for fine separation of slag and slurry, characterized in that, The utility model relates to a shield tunneling machine's cutting disc's slurry separation device, including: Box (1) for connecting with the cutter head (2) of shield tunneling machine; Material guide pipe (3) is arranged in the box (1), and the feed end of the material guide pipe (3) is communicated with the discharge port of the cutter head (2); First separating mechanism (4) is arranged in the box (1), and the feed end of the first separating mechanism (4) is communicated with the material guide pipe (3), the first separating mechanism (4) is used for preliminary separation and is obtained with the big particle muck and the mud containing fine sand, and the big particle muck is discharged from the box (1); Second separating mechanism (5) is arranged in the box (1), and the second separating mechanism (5) is used for the secondary separation of the mud containing fine sand separated by the first separating mechanism (4) and is obtained with fine sand and mud; Third separating mechanism (6) is arranged in the box (1), and the third separating mechanism (6) is used for the extrusion dehydration of the fine sand separated by the second separating mechanism (5) and is obtained with the fine sand of partial dry and mud, and the fine sand of partial dry is discharged from the box (1); Collecting box (7) is used for collecting the mud separated and discharging the box (1).

2. The shield machine slag chute according to claim 1, wherein, The first separating mechanism (4) includes: First mounting frame (41) is fixedly connected in the box (1), and one end of the first mounting frame (41) is stretched out of the box (1); A plurality of separating rods (42) are rotatably connected in the first mounting frame (41) by shaft rods (43) side by side, adjacent two separating rods (42) and two ends two separating rods (42) and the first mounting frame (41) between both have gap, the side wall of the separating rod (42) is fixedly connected with a plurality of paddles (44); Driving assembly is used for driving a plurality of shaft rods (43) to rotate; Pushing assembly is used for pushing the big particle muck on a plurality of separating rods (42) out of the box (1).

3. The shield machine slag chute according to claim 2, characterized in that, The driving assembly includes: First motor (45) is fixedly installed on the first mounting frame (41); Multi-section worm (47) is connected with the output shaft of the first motor (45), and a plurality of worm gears (46) are engaged with the worm (47), and a plurality of shaft rods (43) are coaxially fixedly connected with a plurality of worm gears (46).

4. The shield machine slag chute according to claim 3, wherein, The pushing assembly includes: A pair of transmission rollers (48) are rotatably connected in the first mounting frame (41), one of the transmission rollers (48) is drivingly connected with the worm (47) through a transmission assembly; Two groups of transmission wheels (49) are arranged on a pair of transmission rollers (48) respectively; A pair of transmission belts (410) are drivingly connected between two groups of transmission wheels (49) and located on both sides of a plurality of separating rods (42), a plurality of connecting rods (411) are fixedly connected on the transmission belt (410), a plurality of push rods (412) are fixedly connected on the connecting rod (411), and a plurality of push rods (412) on the connecting rod (411) correspond to the gap between adjacent two separating rods (42) and two ends two separating rods (42) and the first mounting frame (41) respectively.

5. The shield machine slagging device for fine separation of slag and slurry according to claim 4, characterized in that, The transmission assembly includes: A pair of meshing gears (413), one of which is coaxially fixedly connected with the worm (47), and the other is coaxially fixedly connected with the transmission roller (48).

6. The shield machine slag chute according to claim 2, wherein, A plurality of branch pipes (414) are fixedly connected on the first mounting frame (41) along the direction of the large-particle muck, a plurality of nozzles (415) are communicated on the branch pipes (414) and face the separation rod (42), a total pipe (416) is communicated with the branch pipes (414), and the total pipe (416) is connected with a water source and extends out of the box (1).

7. The shield machine slagging device for fine separation of slag and slurry according to claim 1, characterized in that, The second separation mechanism (5) comprises: A second mounting frame (51) is fixedly connected in the box (1) in an inclined manner; A filter screen (52) is fixedly connected to the second mounting frame (51), and one end of the filter screen (52) is provided with a discharge port (53) which is communicated with the third separation mechanism (6) through a communication pipe (54).

8. The shield machine slag chute according to claim 7, characterized in that, A plurality of vibration devices (55) are arranged on the second mounting frame (51).

9. The shield machine slag chute according to claim 7, wherein, The third separation mechanism (6) comprises: An auger assembly (61) is fixedly installed in the box (1), one end of the auger assembly (61) is open and extends out of the box (1), and the auger assembly (61) is communicated with the communication pipe (54); A second motor (62) is fixedly installed in the box (1), and an output shaft of the second motor (62) is connected with the auger assembly (61).

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