Shield muck treatment filter pressing device and filter pressing method

Abstract

The application provides a shield muck treatment filter pressing device, which comprises a muck box, an extrusion plate is arranged in the muck box, the extrusion plate is movably arranged in the muck box, an extrusion oil cylinder is arranged between the extrusion plate and the inner wall of the muck box, the extrusion plate is driven to move in the muck box by the extrusion oil cylinder, a muck discharging plate is arranged at the bottom of the muck box, the muck discharging plate is hingedly arranged at the bottom of the muck box, a muck discharging oil cylinder is arranged at the bottom of the muck discharging plate, the opening and closing of the muck discharging plate are driven by the muck discharging oil cylinder, and a vibrator is further arranged on the outer side wall of the muck box. The shield muck is treated by the device and method, so that the problems of inconvenient transportation of muck, instability of muck accumulation and environmental hazards in the existing shield muck treatment mode can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, specifically to a TBM slag treatment and filtration device and method. Background Technology

[0002] Tunnel boring machines (TBMs) are widely used in urban subway construction due to their advantages such as high construction efficiency, wide applicability to geological formations, low cost, and relative safety. However, due to various factors, including the addition of bentonite slurry (or water), foam, and other liquids during the TBM excavation process, the moisture content of the geological formation itself, and the wastewater generated during the rinsing of tunnel segments, the excavated soil produced during construction contains a large amount of moisture, and some of the excavated soil is even in a fluid plastic state.

[0003] Currently, the main method for handling tunnel boring machine (TBM) excavated soil is direct transportation followed by centralized stockpiling. However, due to its high moisture content, the soil is in a fluid state, making transportation difficult and resulting in low efficiency. Furthermore, spillage during transport easily pollutes roads, and environmental protection departments and the government have relatively strict control regulations on TBM excavated soil. In addition, the large-scale stockpiling of high-moisture excavated soil generated during TBM construction occupies significant amounts of arable land, wasting national land resources. Moreover, high-moisture excavated soil stockpiles are highly unstable, easily leading to collapses, landslides, and dust pollution. Simultaneously, the leaching of large amounts of liquid from the TBM excavated soil causes serious environmental pollution to the water resources surrounding the stockpiling site. Summary of the Invention

[0004] In view of this, the problem to be solved by the present invention is to provide a filter press device and method for treating tunnel boring machine (TBM) slag. By using the device and method to treat TBM slag, the problems of inconvenient transportation of slag, unstable slag accumulation and environmental hazards in the existing TBM slag treatment methods can be effectively solved.

[0005] The present invention solves the above-mentioned technical problems through the following technical means: The present invention provides a shield tunneling slag treatment and filtration device, including a slag box, an extrusion plate is provided inside the slag box, the extrusion plate is movably arranged inside the slag box, an extrusion cylinder is provided between the extrusion plate and the inner wall of the slag box, the extrusion cylinder pushes the extrusion plate to move inside the slag box, a slag discharge plate is provided at the bottom of the slag box, the slag discharge plate is hinged at the bottom of the slag box, a slag discharge cylinder is provided at the bottom of the slag discharge plate, the slag discharge plate is opened and closed by driving the slag discharge cylinder, and a vibrator is also provided on the outer wall of the slag box.

[0006] Furthermore, the extrusion plate and the side plate of the slag box are provided with several water outlet holes, and the outer wall of the slag box is provided with baffles and water collection troughs corresponding to the water outlet holes.

[0007] Furthermore, a protective cover is provided above the extrusion cylinder. The protective cover is a telescopic cover that can extend and retract with the cylinder. A reinforcing plate is provided on the outer wall of the slag box. A support is provided at the bottom of the slag box. The base plate of the support is provided with a traveling wheel. A track matching the traveling wheel and a stop part for fixing the slag box are provided on the ground.

[0008] Furthermore, the slag discharge plates are two symmetrically arranged pieces, and the two slag discharge plates are respectively hinged to both sides of the bottom of the slag box. A slag discharge cylinder is respectively installed at the bottom of the two slag discharge plates. One end of the slag discharge cylinder is hinged to the slag discharge plate, and the other end is hinged to the support.

[0009] Furthermore, it also includes a screw conveyor. One end of the slag box has a slag hole that matches the output end of the screw conveyor, and a connecting part is provided on the side wall. The slag box is connected to the screw conveyor through the connecting part, and the slag box is prevented from moving by the abutment part. The top of the slag box is provided with a top pressure plate. The top pressure plate includes two pieces. One top pressure plate is mounted on the squeezing plate and can be moved up and down. The other top pressure plate is mounted on the side wall of the slag box and can be moved up and down.

[0010] Furthermore, the upper end of the slag box is provided with a fixed support and a sliding support. The sliding support can move along the moving direction of the extrusion plate. The fixed support and the sliding support are respectively provided with a top pressure cylinder. The top pressure cylinder on the sliding support is connected to the top pressure plate on one side of the extrusion plate.

[0011] Furthermore, it also includes a vibrating screen and a conveying mechanism. The vibrating screen separates large particles of crushed stone. The conveying mechanism is located at both ends of the vibrating screen. A receiving hopper is located directly below the vibrating screen. The receiving hopper is connected to a screw conveyor. A second frame is located at the end of the conveying mechanism. A crushed stone box is located inside the second frame.

[0012] The present invention also provides a pressure filtration method, comprising the following steps:

[0013] S1. First, after driving the slag box to the predetermined position, fix the slag box by the stop part, then connect the slag hole to the screw conveyor mechanism, and move the top pressure plate to the top of the slag box.

[0014] S2. The slag is transported to the vibrating screen by the conveying mechanism. The vibrating screen separates the large particles of gravel from the slag and puts the remaining soil into the receiving hopper. The separated large particles of gravel are transported to the gravel box by the conveying mechanism.

[0015] S3. The soil in the receiving hopper is transported to the slag box by a screw conveyor. During the conveying process, it is compacted by the top pressure plate. At the same time, the vibrator is turned on. The screw conveyor continuously squeezes and transports more soil into the slag box. During the squeezing process, water flows out from the water outlet hole on the box wall.

[0016] S4. After conveying the predetermined amount of soil, stop the screw conveyor, start the extrusion plate to extrude, continue to turn on the vibrator, and stop after extruding to the predetermined pressure.

[0017] S5. Open the deflector to drive the slag box to the slag discharge area, retract the slag discharge cylinder, open the slag discharge plate, and extend the top pressure cylinder to press down the top pressure plate to completely discharge the slag and prevent it from sticking to the inner wall of the slag box.

[0018] As can be seen from the above technical solution, the beneficial effects of the present invention are as follows: The present invention provides a shield tunneling excavation soil treatment and filtration device, including an excavation soil box, an excavation plate disposed inside the excavation soil box, the excavation plate being movably disposed inside the excavation soil box, an excavation cylinder being disposed between the excavation plate and the inner wall of the excavation soil box, the excavation cylinder pushing the excavation plate to move inside the excavation soil box, an excavation discharge plate being disposed at the bottom of the excavation soil box, the excavation discharge plate being hinged to the bottom of the excavation soil box, an excavation discharge cylinder being disposed at the bottom of the excavation discharge plate, the excavation discharge plate being opened and closed by driving the excavation discharge cylinder, and a vibrator being disposed on the outer wall of the excavation soil box. By using this device and method to treat shield tunneling excavation soil, the problems of inconvenient transportation of excavation soil, unstable excavation soil accumulation, and environmental hazards in existing shield tunneling machine excavation soil treatment methods can be effectively solved. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 A three-dimensional structural diagram of the shield tunnel slag treatment filter press provided by the present invention;

[0021] Figure 2 for Figure 1 Side view;

[0022] Figure label:

[0023] 1-Slag bin; 2-Extrusion plate; 21-Extrusion cylinder; 3-Slag discharge plate; 4-Vibrator; 5-Support; 6-Walking wheel; 7-Screw conveyor; 8-Vibrating screen; 9-Transfer mechanism; 11-Top pressure plate; 12-Top pressure cylinder; 13-Sliding support; 14-Fixed support; 71-Receiving hopper; 111-Slag hole. Detailed Implementation

[0024] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0025] Please see Figures 1-2 This invention provides a shield tunneling slag treatment and filtration device, including a slag box 1. An extrusion plate 2 is installed inside the slag box 1 and is movably disposed within the slag box 1. An extrusion cylinder 21 is installed between the extrusion plate 2 and the inner wall of the slag box 1, pushing the extrusion plate 2 to move within the slag box 1. A slag discharge plate 3 is installed at the bottom of the slag box 1 and is hinged to the bottom of the slag box 1. A slag discharge cylinder is installed at the bottom of the slag discharge plate 3, driving the slag discharge plate 3 to open and close. A vibrator 4 is also installed on the outer wall of the slag box 1. The main body of the equipment is a frame structure, divided into a slag area and a compression cylinder 21 area. The slag area is used to store slag, and the compression cylinder 21 area is used to arrange 8 sets of compression cylinders 21. The slag area and the compression cylinder 21 area are separated by a compression plate 2 and are equipped with 8 sets of vibrators 4. The bottom of the box is equipped with a split slag discharge plate 3, which is controlled by 6 sets of slag discharge cylinders. The entire set of equipment can move on the track by itself. It is equipped with a hydraulic station to control the extension and retraction of the cylinders and an electrical control box to control the extension and retraction of the cylinders, the start and stop of the vibrators 4 and the movement.

[0026] As a further improvement to the above technical solution, the side plates of the extrusion plate 2 and the slag box 1 are provided with several water outlet holes, and the outer wall of the slag box 1 is provided with baffles and water collection troughs corresponding to the water outlet holes. The slag box 1 has water outlet holes in its wall for extruding water during the extrusion process, and the wall of the slag box 1 is provided with baffles and water collection troughs to prevent mud and water from entering during the extrusion process, while also serving the functions of water accumulation and drainage.

[0027] As a further improvement to the above technical solution, a protective cover is also provided above the extrusion cylinder 21. The protective cover is a telescopic cover that can extend and retract with the cylinder. A reinforcing plate is provided on the outer wall of the slag box 1. A support 5 is provided at the bottom of the slag box 1. The base plate of the support 5 is provided with traveling wheels 6. A track matching the traveling wheels 6 and a stop part for fixing the slag box 1 are provided on the ground. The protective cover above the extrusion cylinder 21 extends and retracts with the cylinder to prevent mud from splashing onto the cylinder and hydraulic station. The reinforcing plate on the outer wall of the slag box 1 increases the strength of the slag box 1 and prevents damage during extrusion. The support 5 and traveling wheels 6 at the bottom of the slag box 1 facilitate the transfer of the slag box 1 for slag discharge. The stop part can fix the slag box 1 in the extrusion area to prevent the slag box 1 from moving during extrusion and drainage.

[0028] As a further improvement to the above technical solution, the slag discharge plates 3 are two symmetrically arranged pieces, which are respectively hinged to each other on both sides of the bottom of the slag box 1. A slag discharge cylinder is installed at the bottom of each of the two slag discharge plates 3, with one end of the cylinder hinged to the slag discharge plate 3 and the other end hinged to the support 5. The two slag discharge plates 3 are arranged in a split configuration, facilitating the discharge of slag and saving space.

[0029] As a further improvement to the above technical solution, a screw conveyor 7 is also included. A slag hole 111 matching the output end of the screw conveyor 7 is provided on one side wall of the slag box 1, and a connecting part is provided on the side wall. The slag box 1 is connected to the screw conveyor 7 through the connecting part, and the slag box 1 is prevented from moving by the abutment part. A top pressure plate 11 is provided on the top of the slag box 1. The top pressure plate 11 includes two pieces. One pressure plate is provided on the extrusion plate 2, which can move up and down. A slide rail is provided on the extrusion plate 2, and a slider is provided on the top pressure plate 11, so that the top pressure plate 11 can move left and right with the extrusion plate 2, and can also move up and down. The other top pressure plate 11 is provided on the side wall of the slag box 1, which can move up and down. The two top pressure plates are arranged in parallel. The upper end of the slag bin 1 is provided with a fixed support 14 and a sliding support 13. The sliding support 13 can move along the moving direction of the extrusion plate 2. A top-pressure cylinder 12 is respectively installed on the fixed support 14 and the sliding support 13. The top-pressure cylinder 12 on the sliding support 13 is connected to a top-pressure plate 11 on one side of the extrusion plate 2. When water is extruded by the extrusion plate 2, the top-pressure plate 11 and the sliding support 13 move together with the extrusion plate 2. A screw conveyor 7 is used to transport the slag, and the screw conveyor 7 performs the first step of extrusion drainage during transport, allowing the slag bin 1 to hold more slag for secondary extrusion drainage, thus improving the filtration efficiency. The top-pressure plate 11 inside the slag bin 1 prevents slag from overflowing from the top of the slag bin 1 when the extruded slag is transported by the screw conveyor 7. At the same time, a top-pressure cylinder 12 is set to press against the top-pressure plate 11. When discharging the slag, the top-pressure plate 11 presses the slag downward to prevent the slag from sticking to the inner wall of the slag box 1 or the squeezing plate 2 and not being completely discharged.

[0030] As a further improvement to the above technical solution, it also includes a vibrating screen 8 and a conveying mechanism 9. The vibrating screen 8 separates large particles of crushed stone. The conveying mechanism 9 is located at both ends of the vibrating screen 8. A receiving hopper 71 is located directly below the vibrating screen 8, and the receiving hopper 71 is connected to a screw conveyor 7. A second frame is located at the end of the conveying mechanism 9, and a crushed stone box is installed within the second frame. By using the vibrating screen 8 to screen out large particles of crushed stone from the slag and conveying them to the crushed stone box via the conveying mechanism 9 for recycling, the system simultaneously separates the soil and crushed stone. The separated soil is then drained through a filter press.

[0031] The present invention also provides a pressure filtration method, comprising the following steps:

[0032] S1. First, after driving the slag box 1 to the predetermined position, fix the slag box 1 by the stop part, then connect the slag hole 111 to the screw conveyor 7, and move the top pressure plate 11 to the upper end of the slag box 1.

[0033] S2. The slag is transported to the vibrating screen 8 by the conveying mechanism 9. The vibrating screen 8 separates the large particles of gravel from the slag and puts the remaining soil into the receiving hopper 71. The separated large particles of gravel are transported to the gravel box by the conveying mechanism 9.

[0034] S3. The soil in the receiving hopper 71 is transported to the slag box 1 by the screw conveyor 7. During the conveying process, it is pressed by the top pressure plate 11. At the same time, the vibrator 4 is turned on. The screw conveyor 7 continuously squeezes and transports more soil into the slag box 1. During the squeezing process, water flows out from the water outlet hole on the box wall.

[0035] S4. After conveying the predetermined amount of soil, stop the screw conveyor 7, start the extrusion plate 2 to extrude, continue to turn on the vibrator 4, and stop after extruding to the predetermined pressure.

[0036] S5. Open the stop section to drive the slag box 1 to the slag discharge area, retract the slag discharge cylinder, open the slag discharge plate 3, and extend the top pressure cylinder 12 to press down the top pressure plate 11 to completely discharge the slag and prevent it from sticking to the inner wall of the slag box 1.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A shield muck treatment filter press apparatus, characterized by: The utility model provides a slag box, which comprises a slag box (1), an extrusion plate (2) arranged in the slag box (1), an extrusion oil cylinder (21) arranged between the extrusion plate (2) and the inner wall of the slag box (1), a discharging plate (3) arranged at the bottom of the slag box (1), a discharging oil cylinder arranged at the bottom of the discharging plate (3), a vibrator (4) arranged on the outer side wall of the slag box (1), a plurality of water outlets arranged on the extrusion plate (2) and the side plate of the slag box (1), a baffle and a water collecting tank corresponding to the water outlets arranged on the outer wall of the slag box (1), a spiral conveyor (7), a slag hole (111) matched with the output end of the spiral conveyor (7) arranged on one end of the side wall of the slag box (1), a connecting part arranged on the side wall, the slag box (1) being connected with the spiral conveyor (7) through the connecting part, the slag box (1) being prevented from moving through the resisting part, a top pressing plate (11) arranged at the top of the slag box (1), the top pressing plate (11) comprising two parts, one part of the top pressing plate (11) being arranged on the extrusion plate (2) in a movable manner, the other part of the top pressing plate (11) being arranged on the side wall of the slag box (1) in a movable manner, the two parts of the top pressing plate being arranged in parallel, a fixed support (14) and a sliding support (13) arranged at the upper end of the slag box (1), the sliding support (13) being movable along the moving direction of the extrusion plate (2), a top pressing oil cylinder (12) arranged on the fixed support (14) and the sliding support (13) respectively, the top pressing oil cylinder (12) on the sliding support (13) being connected with the top pressing plate (11) on one side of the extrusion plate (2), a protective cover arranged above the extrusion oil cylinder (21), the protective cover being arranged in a telescopic manner, a reinforcing plate arranged on the outer wall of the slag box (1), a support (5) arranged at the bottom of the slag box (1), a walking wheel (6) arranged on the bottom plate of the support (5), a track matched with the walking wheel (6) and a resisting part for fixing the slag box (1) arranged on the ground, a vibrating screen (8) and a conveying mechanism (9), large-sized gravel being separated through the vibrating screen (8), the conveying mechanism (9) being arranged at two ends of the vibrating screen (8), a receiving hopper (71) arranged directly below the vibrating screen (8), the receiving hopper (71) being communicated with the spiral conveyor (7), a second frame arranged at the tail end of the conveying mechanism (9), and a gravel box arranged in the second frame.

2. The sludge treatment filter press apparatus according to claim 1, wherein: The discharging plate (3) is symmetrically arranged in two parts, the two parts of the discharging plate (3) are respectively arranged on the two sides of the bottom of the slag box (1) in a hinged manner, and the two parts of the discharging plate (3) are respectively provided with discharging oil cylinders, one end of the discharging oil cylinder is hingedly connected with the discharging plate (3), and the other end of the discharging oil cylinder is hingedly connected with the support (5).

3. A filter pressing method based on the filter press according to claim 1 or 2, characterized in that, The utility model comprises the following steps: S1, first of all, the slag box (1) is driven to the predetermined position, and then the slag box (1) is fixed by the blocking part, then the slag hole is connected with the screw conveyor (7), and the top pressing plate (11) is moved to the upper end of the slag box (1); S2, the slag is transported into the vibrating screen (8) through the conveying mechanism (9), the large particle gravel in the slag is separated out through the vibrating screen (8), and the remaining soil is entered into the receiving hopper (71), and the separated large particle gravel is conveyed into the gravel box through the conveying mechanism (9); S3, the soil in the receiving hopper (71) is conveyed into the slag box (1) through the screw conveyor (7), and is pressed by the top pressing plate (11) during the conveying process, and the vibrator (4) is started, the screw conveyor (7) continuously extrudes more soil into the slag box (1), and the water is discharged from the water outlet hole of the box wall during the extrusion process; S4, after conveying a predetermined amount of soil, stop the screw conveyor (7), start the extrusion plate (2) to extrude, continue to start the vibrator (4), and stop after extruding to a predetermined pressure; S5, open the blocking part to drive the slag box (1) to the slag discharge area, retract the slag discharging oil cylinder, open the slag discharging plate (3), and extend the top pressing oil cylinder (12) to press down the top pressing plate (11), so that the slag is completely pressed out, and it is prevented from sticking to the inner wall of the slag box (1).

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