A large particle size stone separation device for a slurry shield machine

Abstract

The utility model relates to the technical field of mud separation device, concretely to a mud water shield machine big particle size stone block separation equipment, including mud pipeline, jar and be used for connecting mud pipeline and jar's mud communication pipe, mud pipeline left and right two ends are opened with the inlet and outlet of slurry respectively, the second observation window and third observation window are opened respectively on mud pipeline, the stone block collection cover is arranged on the jar, the first observation window is opened on the jar, the stone block filter mechanism and separation mechanism are arranged on mud pipeline, the separation mechanism position corresponds with mud communication pipe, through the hydraulic drive and gear transmission design of extension part in separation mechanism, can prevent the stone block jam, can realize the efficient separation effect similar centrifugal separation, the cooperation of separation mechanism and stone block filter mechanism, adapt to the construction demand under different geological conditions, significantly improve the adaptability of equipment to complex working condition.

Description

Technical Field

[0001] This utility model relates to the technical field of mud separation devices, specifically a large-diameter stone separation device for a mud-water shield tunneling machine. Background Technology

[0002] In slurry shield tunneling machine solutions, the function of filtering the excavated mud or rocks is required. In terms of filtration design, typical methods include using a grid filter, which can effectively filter large rocks without significantly affecting the flow rate of the pipeline. The structure is simple, but the flow rate of the pipeline is relatively fixed, which will inevitably affect the efficiency of slurry discharge. Another method is to use a mixing screen or drum screen, which classifies rocks by the size of the screen holes. The structure is more complex, but this method requires a long pipeline in the quarry box, occupies a large space, and is not very efficient.

[0003] To address the issue that the fixed flow rate of the grating filter pipes in traditional slurry shield tunneling machine filtration schemes affects the efficiency of slurry discharge, Chinese patent publication number CN111589210A discloses a slurry separation and filtration device for shield tunneling machines. This device includes a slurry bin, a sand bin, a fine sand bin, a slurry-water bin, a rock discharge conveying channel, a sand conveying channel, a fine sand conveying channel, and a drainage conveying channel. By specifically configuring each component, large particles of rock, sand, fine sand, and slurry-water are filtered and separated from the slurry. The separated materials are then used in other construction operations, maximizing material utilization, reducing waste, and saving costs. This existing technology connects to the shield tunneling machine only via an interface, allowing for easy disassembly and maintenance of the individual device. In the above solutions, the combined use of the first filter, the second filter, and the blower can improve the filtration efficiency of the bar screen and prevent clogging to a certain extent. However, when faced with filter clogging, the bar screen filtration solution involves opening the bar screen cover, which raises the risk of water leakage from the sealing surface. Maintenance is relatively simple. For the filter screen solution, it is necessary to replace the filter screen or use a wooden stick to clean the screen to solve the problem of screen hole clogging. As can be seen from the above solutions, typical solutions cannot achieve a balance between efficiency and function, and cannot effectively solve the problem of stone clogging. Therefore, we propose a large-diameter stone separation device for slurry shield tunneling machines. Utility Model Content

[0004] The purpose of this invention is to provide a large-diameter rock separation device for slurry shield tunneling machines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter stone separation device for a slurry shield tunneling machine, comprising a slurry pipe, a tank, and a slurry connecting pipe for connecting the slurry pipe and the tank. The slurry pipe has an inlet and an outlet at its left and right ends, respectively. The slurry pipe has a second observation window and a third observation window, respectively. The tank is equipped with a stone collection cover and a first observation window. The slurry pipe is equipped with a stone filtering mechanism and a separation mechanism, the separation mechanism being positioned corresponding to the slurry connecting pipe.

[0006] In some embodiments, the stone filtering mechanism includes a filter housing, an opening and closing component disposed within the filter housing, and blocking assemblies installed at both ends of the opening and closing component, wherein the opening and closing component is slidably connected to the inner wall of the filter housing.

[0007] In some embodiments, the opening and closing component includes symmetrically arranged opening and closing connecting rods, an opening and closing contact block fixed in the middle section of the opening and closing connecting rods, a first spring installed between the two opening and closing connecting rods, and a sliding buckle fixed at both ends of the opening and closing connecting rods. The number of the first springs is set to a plurality, and the plurality of first springs are arranged linearly at equal intervals.

[0008] In some embodiments, the blocking assembly includes symmetrically arranged blocking components, two of which are rotatably connected to two opening and closing linkages respectively. Each blocking component includes a horizontal bar, a vertical bar, and a second spring. The number of horizontal bars and vertical bars is provided in a plurality, and the plurality of horizontal bars and vertical bars are alternately distributed in a parallelogram. The horizontal bars and vertical bars are rotatably connected. The top horizontal bar, near the central axis of the mud pipe, is connected to the second spring, and the other end of the second spring is fixed to the inner wall of the filter housing.

[0009] In some embodiments, the separation mechanism includes a separation frame and mounting rollers. The separation frame is mounted on the mounting rollers at equal circumferential intervals. An extension component is provided on the separation frame. The extension component includes a clamping rod. One end of the clamping rod is provided with a clamping disk. There are two clamping rods. The two clamping rods are slidably connected to the clamping disk. The two clamping rods are symmetrically arranged on the clamping disk. A stroke block is provided above the clamping disk. The stroke block is slidably connected to the clamping disk. A torsion connecting rod is provided at the bottom of the stroke block. There are two torsion connecting rods. The two torsion connecting rods are symmetrically arranged at the bottom of the stroke block. The torsion connecting rods are rotatably connected to the stroke block.

[0010] In some embodiments, each of the two torsion links is provided with a clamping connecting pin at its bottom, the clamping connecting pin being rotatably connected to the torsion link; each of the two clamping connecting pins is provided with an outer clamping link and an inner clamping link at its bottom, the clamping connecting pin being rotatably connected to the outer clamping link and the inner clamping link; the other end of the outer clamping link and the inner clamping link are respectively rotatably connected to two clamping rods; a third spring is provided between the clamping disc and the stroke block; a synchronous gear is provided at the top of the clamping disc; the clamping disc is fixedly connected to the synchronous gear.

[0011] In some embodiments, the separation frame further includes a support frame, on which a mounting frame is provided. The extension component is mounted on the mounting frame, and a synchronous belt is provided above the mounting frame. The synchronous belt drives a synchronous gear to rotate. A drive motor is fixed on one side of the mounting frame, and the synchronous belt is driven by the drive motor. A synchronous bar is provided above the synchronous belt, and the synchronous gear is fixed on the synchronous bar. A second hydraulic cylinder is mounted on one side of the mounting frame, and the output end of the second hydraulic cylinder is fixedly connected to one end of the synchronous bar. A limit slide rod is provided on the other end of the synchronous bar, and the limit slide rod is fixed on the synchronous bar and slidably connected to the mounting frame.

[0012] In some embodiments, a first hydraulic cylinder is provided between the support frame and the mounting frame, and the mounting frame and the support frame are slidably connected by the first hydraulic cylinder. The separation mechanism further includes a support turntable. The separation frame is mounted on the mounting roller, and the support turntable is mounted on the mounting roller and rotatably connected to the mounting roller. The number of support turntables is set to a plurality, and each of the plurality of support turntables corresponds to a clamping rod. The other end of the clamping rod is slidably connected to the support turntable.

[0013] In some embodiments, the mounting roller is connected to an opening and closing linkage on the side away from the slurry outlet, and the separation mechanism is slidably connected to the inner wall of the mud pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the hydraulic drive and gear transmission design of the extended component in the separation mechanism, can adjust the clamping rod spacing and mounting frame height in real time, dynamically matching the separation requirements of stones of different sizes. Combined with the rotational shearing and turbulence effect of the separation frame and the mounting roller, it can not only prevent stones from getting stuck, but also achieve a high-efficiency separation effect similar to centrifugal separation. The coordinated work of the separation mechanism and the stone filtering mechanism can automatically adjust the separation parameters according to the tunnel boring machine's operation cycle, adapting to the construction needs under different geological conditions and significantly improving the equipment's adaptability to complex working conditions.

[0015] 2. The stone filtering mechanism in this utility model achieves dynamic opening and closing by linking the opening and closing components with the blocking components and utilizing the changes in mud impact force and spring elasticity. When mud is periodically input, the opening and closing contact block is compressed by the impact force to block large stones. When the input is paused, the spring resets and pushes the stones to move in the opposite direction to prevent jamming. The extension component of the separation mechanism drives the clamping rod to rotate back and forth through synchronous gears to achieve a self-cleaning function. The dual anti-clogging mechanism, with the elastic buffer of the filtering mechanism and the self-cleaning of the separation mechanism, greatly reduces the need for manual intervention, ensures continuous operation, and reduces maintenance costs. It is especially suitable for shield tunneling construction scenarios with high mud flow and frequent occurrence of large-diameter stones. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a left view of the overall structure of this utility model; Figure 3 Diagram showing the open and closed states of the stone filtering mechanism of this utility model; Figure 4 For the present utility model Figure 3 Schematic diagram of the cross-section at the CC point; Figure 5 This is a schematic diagram of the opening and closing component structure of this utility model; Figure 6 This is a schematic diagram of the blocking component structure of this utility model; Figure 7 This is a cross-sectional view of the installation position of the separation mechanism of this utility model; Figure 8 This is a schematic diagram of the separation mechanism of this utility model; Figure 9 This is a schematic diagram of the separation frame structure of this utility model; Figure 10 This is a schematic diagram showing the position of the second hydraulic cylinder of this utility model; Figure 11 This is a schematic diagram of the clamping disc structure of this utility model; Figure 12 This is a schematic diagram showing the position of the third spring in this utility model; Figure 13 This is a schematic diagram of the clamping connecting pin of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Slurry inlet; 2. Second observation window; 3. Stone filtration mechanism; 4. Third observation window; 5. Slurry outlet; 6. Tank body; 7. First observation window; 8. Stone collection cover; 9. Filter housing; 10. Blocking assembly; 11. Opening and closing component; 12. Sliding latch; 13. Opening and closing connecting rod; 14. First spring; 15. Opening and closing contact block; 16. Horizontal bar; 17. Vertical bar; 18. Second spring; 19. Blocking component; 20. Separating frame; 21. Support turntable; 22. Mounting roller; 23. 24. Support frame; 25. First hydraulic cylinder; 26. Drive motor; 27. Second hydraulic cylinder; 28. Synchronous bar; 29. ​​Synchronous belt; 30. Limiting slide bar; 31. Mounting bracket; 32. Extension component; 33. Clamping rod; 34. Clamping disc; 35. Synchronous gear; 36. Stroke block; 37. Third spring; 38. Torsion connecting rod; 39. Outer clamping connecting rod; 40. Clamping connecting pin; 41. Inner clamping connecting rod; 42. Separation mechanism; 43. Mud pipe; 44. Mud connecting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides a technical solution: such as Figures 1-13 The large-diameter stone separation device for a slurry shield tunneling machine shown includes a slurry pipe 42, a tank 6, and a slurry connecting pipe 43 for connecting the slurry pipe 42 and the tank 6. The slurry pipe 42 has an inlet 1 and an outlet 5 at its left and right ends, respectively. The slurry pipe 42 has a second observation window 2 and a third observation window 4, respectively. The tank 6 is equipped with a stone collection cover 8 and a first observation window 7. The slurry pipe 42 is equipped with a stone filtering mechanism 3 and a separation mechanism 41. The separation mechanism 41 is positioned corresponding to the slurry connecting pipe 43. The mud pipe 42 serves as the main channel for mud transportation, connecting the mud inlet 1 and the mud outlet 5. It carries the mud flow and guides the stones into the separation mechanism 41. The mud is periodically input from the mud inlet 1, passes through the separation mechanism 41 and the stone filtration mechanism 3 in sequence, and is finally discharged from the mud outlet 5. The second observation window 2 and the third observation window 4 set on the pipe are used to monitor the mud flow status and stone separation status in real time. The tank body 6 and the stone collection cover 8 store the separated stones, and the stone accumulation is observed through the first observation window 7. The separation mechanism 41 pushes the stones into the mud connecting pipe 43. The stones are deposited in the tank body 6, and the liquid flows back to the mud pipe 42 through the tank body 6, thus separating the stones from the mud. The stone collection cover 8 is opened periodically to clean the stones. The stone filtering mechanism 3 includes a filter housing 9, an opening and closing component 11 disposed inside the filter housing 9, and blocking components 10 installed at both ends of the opening and closing component 11. The opening and closing component 11 is slidably connected to the inner wall of the filter housing 9. The blocking component 10 includes a horizontal bar 16, a vertical bar 17, and a second spring 18. The opening and closing angle is adjusted by the parallelogram structure to adapt to the interception needs of stones of different sizes. The horizontal bar 16 and the vertical bar 17 are alternately rotated and connected to form a deformable blocking net. The second spring 18 adjusts the angle of the horizontal bar 16 according to the change of mud impact force to achieve dynamic sealing and stone blocking. The filter housing 9 accommodates the opening and closing component 11 and the blocking component 10, forming a filtration channel for mud flow. It is slidably connected to the inner wall of the mud pipe 42, allowing the opening and closing component 11 to dynamically adjust its position under the impact of mud. The opening and closing component 11 includes symmetrically arranged opening and closing connecting rods 13, an opening and closing contact block 15 fixed in the middle section of the opening and closing connecting rods 13, a first spring 14 installed between the two opening and closing connecting rods 13, and a sliding buckle 12 fixed at both ends of the opening and closing connecting rods 13. The number of first springs 14 is set to a plurality, and the plurality of first springs 14 are arranged linearly at equal intervals. The blocking assembly 10 includes symmetrically arranged blocking components 19. The two blocking components 19 are rotatably connected to two opening and closing connecting rods 13 respectively. The blocking component 19 includes a horizontal bar 16, a vertical bar 17 and a second spring 18. The number of horizontal bars 16 and vertical bars 17 are both arranged in a plurality. The plurality of horizontal bars 16 and the plurality of vertical bars 17 are alternately distributed in a parallelogram. The horizontal bars 16 and the vertical bars 17 are rotatably connected. The end of the top horizontal bar 16 closest to the central axis of the mud pipe 42 is connected to the second spring 18. The other end of the second spring 18 is fixed to the inner wall of the filter housing 9. The separation mechanism 41 includes a separation frame 20 and an installation roller 22. The separation frame 20 is installed on the installation roller 22 at equal intervals around the circumference. An extension component 31 is provided on the separation frame 20. The extension component 31 includes a clamping rod 32. One end of the clamping rod 32 is provided with a clamping plate 33. There are two clamping rods 32. The two clamping rods 32 are slidably connected to the clamping plate 33. The two clamping rods 32 are symmetrically arranged on the clamping plate 33. A stroke block 35 is provided above the clamping plate 33. The stroke block 35 is slidably connected to the clamping plate 33. A torsion connecting rod 37 is provided at the bottom of the stroke block 35. There are two torsion connecting rods 37. The two torsion connecting rods 37 are symmetrically arranged at the bottom of the stroke block 35. The torsion connecting rod 37 is rotatably connected to the stroke block 35. The separation mechanism 41 actively separates stones through rotational shearing turbulence and clamping adjustment of the extension component 31. The stone filtering mechanism 3 passively intercepts escaping stones through elastic opening and closing and blocking component 10. The two work together to ensure efficient stone separation. At the same time, the risk of blockage is reduced through spring buffering and self-cleaning function. When mud is periodically input, the separation mechanism 41 and the filtering mechanism work together. When paused, the spring resets and pushes the stones to move in the opposite direction to prevent accumulation. The separation parameters, such as the spacing of the clamping rods 32 and the height of the mounting frame 30, are adjusted in real time through hydraulic and gear transmission to match the size of stones under different geological conditions. The self-cleaning function of the separation mechanism 41 reduces manual intervention, the elastic design of the stone filtration mechanism 3 reduces the risk of leakage at the sealing surface, and the separation design of the tank 6 from the pipeline ensures continuous flow of slurry and stone deposition does not affect the efficiency of the main process. The mounting roller 22 and the separation frame 20 drive the extension component 31 to rotate, generating shear turbulence to prevent stones from getting stuck and push the stones into the tank 6. The mounting roller 22 is driven to rotate by a built-in motor, and its surface filter holes allow liquid to pass through while disturbing the flow of mud to form a centrifugal effect. The separation frame 20 is evenly distributed around the circumference, driving the extension component 31 to rotate continuously and push the stones into the mud connecting pipe 43. Each of the two torsion connecting rods 37 has a clamping connecting pin 39 at its bottom, which is rotatably connected to the torsion connecting rod 37. Each of the two clamping connecting pins 39 has an outer clamping connecting rod 38 and an inner clamping connecting rod 40 at its bottom, which is rotatably connected to the outer clamping connecting rod 38 and the inner clamping connecting rod 40. The other ends of the outer clamping connecting rod 38 and the inner clamping connecting rod 40 are rotatably connected to the two clamping rods 32 respectively. A third spring 36 is provided between the clamping disk 33 and the stroke block 35. A synchronous gear 34 is provided on the top of the clamping disk 33, and the clamping disk 33 is fixedly connected to the synchronous gear 34. The separation frame 20 also includes a support frame 23, on which a mounting frame 30 is provided. An extension component 31 is mounted on the mounting frame 30. A synchronous belt 28 is provided above the mounting frame 30. The synchronous belt 28 drives the synchronous gear 34 to rotate. A drive motor 25 is fixed on one side of the mounting frame 30. The synchronous belt 28 is driven by the drive motor 25. A synchronous bar 27 is provided above the synchronous belt 28. The synchronous gear 34 is fixed on the synchronous bar 27. A second hydraulic cylinder 26 is installed on one side of the mounting frame 30. The output end of the second hydraulic cylinder 26 is fixedly connected to one end of the synchronous bar 27. A limit slide rod 29 is provided on the other end of the synchronous bar 27. The limit slide rod 29 is fixed on the synchronous bar 27 and is slidably connected to the mounting frame 30. The extension component 31 includes a clamping rod 32, a clamping disc 33, a stroke block 35, a torsion link 37, an outer clamping link 38, an inner clamping link 40, a third spring 36, and a synchronous gear 34. It achieves stone gripping, separation, and self-cleaning through spacing adjustment and reciprocating rotation. The second hydraulic cylinder 26 drives the synchronous strip 27 to move, and drives the synchronous gear 34 to rotate through the synchronous belt 28, adjusting the spacing of the clamping rods 32 to adapt to different stone sizes. The synchronous gear 34 drives the clamping rods 32 to reciprocate, and works with the third spring 36 to reset, clearing stones stuck between the clamping rods 32. The first hydraulic cylinder 24 drives the mounting bracket 30 to slide, changing the spacing between the extension component 31 and the inner wall of the mud pipe 42, optimizing the separation efficiency. The opening and closing component 11 includes an opening and closing linkage 13, an opening and closing contact block 15, a first spring 14, and a sliding buckle 12. Through elastic buffering and dynamic opening and closing, it intercepts large stones that have not been processed by the separation mechanism 41. The impact force of the mud compresses the first spring 14, causing the opening and closing contact block 15 to slide along the filter shell 9 to block the large stones. When the tunnel boring machine is paused, the spring resets and pushes the stones to move in the opposite direction to prevent jamming. It also works with the separation mechanism 41 to shake the stones off into the tank 6. A first hydraulic cylinder 24 is provided between the support frame 23 and the mounting frame 30. The mounting frame 30 and the support frame 23 are slidably connected through the first hydraulic cylinder 24. The separation mechanism 41 also includes a support turntable 21. The separation frame 20 is mounted on the mounting roller 22. The support turntable 21 is mounted on the mounting roller 22 and is rotatably connected to the mounting roller 22. The number of support turntables 21 is set to a certain number. Each of the support turntables 21 corresponds to a clamping rod 32. The other end of the clamping rod 32 is slidably connected to the support turntable 21. The mounting roller 22 is connected to the opening and closing connecting rod 13 on the side away from the slurry outlet 5, and the separation mechanism 41 is slidably connected to the inner wall of the mud pipe 42. The support turntable 21 supports the end of the clamping rod 32 to ensure its sliding stability. It is rotatably connected to the installation roller 22, allowing the clamping rod 32 to remain in contact with the inner wall of the mud pipe 42 during rotation, preventing stones from escaping. The device achieves efficient and adaptive separation of large-diameter stones by passively intercepting the stone filtering mechanism 3 and actively separating the stones by the separation mechanism 41, combined with spring elastic buffering, hydraulic drive adjustment and self-cleaning mechanism. At the same time, it solves the problems of fixed flow rate, easy clogging and high maintenance cost in traditional solutions, and significantly improves the continuity and adaptability of shield tunneling construction. When the device is working, mud is periodically fed into the mud pipe 42 from the slurry inlet 1. In the common shield machine operation process, the process of initial grouting and secondary grouting is required. Mud is periodically fed into the mud pipe 42 to adapt to the shield machine operation process. The mud passes through the separation mechanism 41 and the stone filtering mechanism 3 in sequence from the mud pipe 42 and is output from the slurry outlet 5. The filtered stones will enter the tank 6 through the mud connecting pipe 43. When it is necessary to remove the stones in the tank 6, the device is stopped first, and then the stone collection cover 8 is opened to remove the collected stones. Considering that the fine sand and gravel mixed in the mud may affect the transmission between the synchronous belt 28 and the synchronous gear 34, a covered shell can be installed on the separator 20 to prevent fine sand and gravel from entering the interior of the separator 20. When the mud passes through the separation mechanism 41, the mounting roller 22 rotates under the drive of the built-in power source, which can be a motor. The two ends of the mounting roller 22 are closed, but its circumferential surface can be elliptical or other shapes that can cause turbulence. When the mounting roller 22 rotates, it disturbs the liquid flow direction in the mud, causing irregular shear turbulence to be generated in the radial direction of the rotation of the mounting roller 22. To a certain extent, it generates fine sand and gravel on the surface of the separation mechanism 41 and the stone filtering mechanism 3 for washing. The rotating mounting roller 22 drives the separator 20 mounted on it to rotate. The extension component 31 on the separator 20 pushes stones in the mud into the mud connecting pipe 43. Specifically, when the mud enters the device, it quickly fills the tank 6 and then flows out from the outlet 5. The rotating mounting roller 22 drives the separator 20 to separate stones in the mud. Although its rotation speed is slower than that of traditional centrifugal separation, when used with the mud-filled tank 6, it can achieve a centrifugal effect similar to centrifugal separation. The component 31 continuously pushes stones from the mud into the tank 6. Since the liquid in the tank 6 is separated from the mud pipe 42 through the mud connecting pipe 43, the mud in the tank 6 is not directly impacted by the mud inlet 1 and remains relatively still. The stones conveyed by the extension component 31 are deposited inside the tank 6, causing the liquid in the tank 6 to flow out, while the stones remain in the tank 6, ultimately achieving the effect of stone separation. This separation method can be well adapted to the characteristics of continuous mud separation and the cyclical operation of the tunnel boring machine. The extension components 31 are all mounted on the mounting frame 30. The mounting frame 30 can slide relative to the support frame 23 through the drive of the first hydraulic cylinder 24. The other end of the extension component 31 passes through the mounting roller 22 through the support turntable 21. The support turntable 21 can rotate on the surface of the mounting roller 22 to adjust the working length of the extension component 31. In the extension component 31, the spacing between the clamping rods 32 can be adjusted through the torsion connecting rod 37, the outer clamping connecting rod 38, the clamping connecting sheath, and the inner clamping connecting rod 40. Specifically, the spacing between the clamping rods 32 is adjusted by the lifting and lowering of the stroke block 35 and the fixing action of the clamping plate 33. The third spring 36 plays the role of rebound and reset after the spacing of the clamping rods 32 is adjusted. By adjusting the spacing of the clamping rods 32 and the height of the mounting frame 30, the spacing between the mounting frame 30 and the inner wall of the mud pipe 42 can be changed, as well as the minimum size of the stone that the separation mechanism 41 can separate. The device can be adjusted in real time according to actual production needs, thus improving its applicability. The clamping rod 32 can reciprocate under the drive of the synchronous gear 34. When cleaning whether there are stones stuck between the clamping rods 32, it can perform better self-cleaning. With the adjustment of the spacing of the clamping rods 32, the separation mechanism 41 inside the device can be cleaned without disassembling the device. When the mud passes through the stone filtering mechanism 3, the mud exerts a certain impact force on the opening and closing contact block 15 of the opening and closing component 11. The first spring 14 is in a compressed state, and larger stones that have not been separated by the separation mechanism 41 will first contact the front opening and closing contact block 15. Under the action of the stone's gravity, the opening and closing component 11 moves vertically downward along the filter housing 9, and the blocking component 19 of the synchronous belt 28 moves the blocking assembly 10 to achieve the closing action. Furthermore, when a stone contacts the opening and closing contact block 15 on the side of the slurry inlet 1, larger stones are blocked by the blocking component 19 on that side. When the tunnel boring machine stops periodically, the mud impacts the opening and closing... The impact force of the contact block 15 will decrease, and the first spring 14 will return to its original state, pushing the stone to move in the opposite direction of the mud movement to prevent the stone from getting stuck. Under the push of the separation mechanism 41 and the blocking component 19, the larger stones will eventually fall into the tank 6. During this process, the force of the stone on the opening and closing contact block 15 of the opening and closing component 11 changes with the tunneling cycle of the shield machine. The opening angle of the blocking component 10 changes accordingly under the action of the second spring 18. For larger stones in the mud that are not separated by the separation mechanism 41, the stone filtering mechanism 3 can play a good blocking role. The opening and closing contact block 15 on one side of the slurry inlet 1 is connected to the side of the mounting roller 22. As the first spring 14 is compressed, the separation mechanism 41 will also slide in the mud pipe 42, preventing stones from getting stuck between the separation mechanism 41 and the stone filtering mechanism 3. At the same time, it can also make the separation mechanism 41 better contact with the escaped stones. When the first spring 14 rebounds, that is, when the mud input is paused periodically, the separation mechanism 41 can be pushed in the opposite direction. Utilizing the damping and energy dissipation characteristics of the first spring 14, the stones in the separation mechanism 41 are shaken off into the mud connecting pipe 43.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-diameter rock separation device for a slurry shield tunneling machine, comprising a slurry pipe (42), a tank (6), and a slurry connecting pipe (43) for connecting the slurry pipe (42) and the tank (6), characterized in that: The mud pipe (42) has an inlet (1) and an outlet (5) at its left and right ends, respectively. The mud pipe (42) has a second observation window (2) and a third observation window (4), respectively. The tank (6) is equipped with a stone collection cover (8), and the tank (6) has a first observation window (7). The mud pipe (42) is equipped with a stone filtration mechanism (3) and a separation mechanism (41). The separation mechanism (41) is located in a position corresponding to the mud connecting pipe (43).

2. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 1, characterized in that: The stone filtering mechanism (3) includes a filter housing (9), an opening and closing component (11) disposed inside the filter housing (9), and blocking components (10) installed at both ends of the opening and closing component (11). The opening and closing component (11) is slidably connected to the inner wall of the filter housing (9).

3. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 2, characterized in that: The opening and closing component (11) includes symmetrically arranged opening and closing connecting rods (13), an opening and closing contact block (15) fixed in the middle section of the opening and closing connecting rods (13), a first spring (14) installed between the two opening and closing connecting rods (13), and a sliding buckle (12) fixed at both ends of the opening and closing connecting rods (13). The number of the first springs (14) is set to a plurality, and the plurality of first springs (14) are arranged linearly at equal intervals.

4. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 3, characterized in that: The blocking assembly (10) includes symmetrically arranged blocking components (19). Two blocking components (19) are rotatably connected to two opening and closing connecting rods (13). Each blocking component (19) includes a horizontal bar (16), a vertical bar (17), and a second spring (18). The number of horizontal bars (16) and vertical bars (17) is provided in several. The several horizontal bars (16) and several vertical bars (17) are alternately distributed in a parallelogram. The horizontal bars (16) and vertical bars (17) are rotatably connected. The top horizontal bar (16) among the several horizontal bars (16) is connected to the second spring (18) at one end near the central axis of the mud pipe (42). The other end of the second spring (18) is fixed on the inner wall of the filter housing (9).

5. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 1, characterized in that: The separation mechanism (41) includes a separation frame (20) and an installation roller (22). The separation frame (20) is installed on the installation roller (22) at equal intervals around its circumference. An extension component (31) is provided on the separation frame (20). The extension component (31) includes a clamping rod (32). One end of the clamping rod (32) is provided with a clamping plate (33). There are two clamping rods (32). The two clamping rods (32) are slidably connected to the clamping plate (33). Two clamping rods (32) are symmetrically arranged on the clamping plate (33). A stroke block (35) is arranged above the clamping plate (33). The stroke block (35) is slidably connected to the clamping plate (33). A torsion link (37) is arranged at the bottom of the stroke block (35). There are two torsion links (37). The two torsion links (37) are symmetrically arranged at the bottom of the stroke block (35). The torsion link (37) is rotatably connected to the stroke block (35).

6. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 5, characterized in that: Both of the torsion links (37) are provided with clamping connecting pins (39) at their bottoms. The clamping connecting pins (39) are rotatably connected to the torsion links (37). Both of the clamping connecting pins (39) are provided with outer clamping links (38) and inner clamping links (40) at their bottoms. The clamping connecting pins (39) are rotatably connected to the outer clamping links (38) and inner clamping links (40). The other ends of the outer clamping links (38) and inner clamping links (40) are rotatably connected to the two clamping rods (32) respectively. A third spring (36) is provided between the clamping disc (33) and the stroke block (35). A synchronous gear (34) is provided on the top of the clamping disc (33). The clamping disc (33) is fixedly connected to the synchronous gear (34).

7. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 6, characterized in that: The separation frame (20) also includes a support frame (23), on which a mounting frame (30) is provided. The extension component (31) is mounted on the mounting frame (30). A synchronous belt (28) is provided above the mounting frame (30). The synchronous belt (28) drives the synchronous gear (34) to rotate. A drive motor (25) is fixed on one side of the mounting frame (30). The synchronous belt (28) is driven by the drive motor (25). A synchronous strip (27) is provided above the synchronous belt (28). The synchronous gear (34) is fixed on the synchronous strip (27). A second hydraulic cylinder (26) is installed on one side of the mounting frame (30). The output end of the second hydraulic cylinder (26) is fixedly connected to one end of the synchronous strip (27). A limit slide rod (29) is provided on the other end of the synchronous strip (27). The limit slide rod (29) is fixed on the synchronous strip (27). The limit slide rod (29) is slidably connected to the mounting frame (30).

8. The large-diameter rock separation device for a slurry shield tunneling machine according to claim 7, characterized in that: A first hydraulic cylinder (24) is provided between the support frame (23) and the mounting frame (30). The mounting frame (30) and the support frame (23) are slidably connected by the first hydraulic cylinder (24). The separation mechanism (41) also includes a support turntable (21). The separation frame (20) is mounted on the mounting roller (22). The support turntable (21) is mounted on the mounting roller (22) and is rotatably connected to the mounting roller (22). The number of support turntables (21) is set to a plurality. Each of the plurality of support turntables (21) corresponds to a clamping rod (32). The other end of the clamping rod (32) is slidably connected to the support turntable (21).

9. A large-diameter rock separation device for a slurry shield tunneling machine according to claim 5, characterized in that: The mounting roller (22) is fixedly connected to the opening and closing connecting rod (13) on the side away from the slurry outlet (5), and the separation mechanism (41) is slidably connected to the inner wall of the mud pipe (42).

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