Shield muck multi-stage sand washing device

Abstract

The utility model belongs to the technical field of shield muck sand washing, and discloses a shield muck multi-stage sand washing device which comprises a box body, a first-stage sand washing net is fixedly arranged in the box body, a waterproof sleeve is fixedly arranged on the bottom face of the first-stage sand washing net, a second motor is fixedly arranged on the bottom face of the first-stage sand washing net, and a third motor is fixedly arranged on the bottom face of the second-stage sand washing net. A rotating fan is fixedly arranged at the tail end of a main shaft of the second motor and rotates in the first-stage sand washing net, a water diversion ring is fixedly arranged on the bottom face of the first-stage sand washing net, a water collecting hopper is fixedly arranged on the bottom face of the water diversion ring, and a water drainage pipe is fixedly arranged on the bottom face of the water collecting hopper. Shield muck treatment is completed after the shield muck passes through the multi-stage sand washing device, the sand washing effect is considered, meanwhile, the device is small in occupied space and convenient to install and use in the later period, and the space utilization rate is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of shield tunneling slag washing technology, specifically a multi-stage shield tunneling slag washing device. Background Technology

[0002] As a byproduct of shield tunneling construction, shield tunneling excavated soil will occupy a large amount of land, reduce soil quality, and have an impact on water areas and water conservancy projects if it is not treated. Therefore, it needs to be treated in a timely manner. Existing sand washing equipment often has unsatisfactory treatment effect and low treatment efficiency, and some sand washing equipment occupies too much area, resulting in excessive waste of space.

[0003] Meanwhile, the patent specification with announcement number CN 217028905 U discloses a high-efficiency sand washing shield tunnel slag treatment device, including a shell, a mixing and conveying wheel, a movable screening frame structure, an inclined plate, a discharge port, a mud pump, a water pump, a five-stage sedimentation tank, a clear water tank, a water outlet valve, a mixing station, a three-stage sedimentation tank, a first filter press, a conveying pipeline, a feed hopper, a mixing conveying cylinder structure, and a second filter press. The mixing and conveying wheel is axially connected to the middle part of the shell; the movable screening frame structure is supported on the right side of the shell; and the inclined plate is welded to the lower right side of the shell.

[0004] However, in implementing the relevant technology, the following problems were found in the above-mentioned high-efficiency sand washing shield tunnel slag treatment device: the device has a good effect in shield tunnel slag treatment, but due to its large size, it occupies a huge space, resulting in insufficient space utilization and considerable trouble in terms of installation and use.

[0005] Therefore, a multi-stage sand washing device for tunnel boring machine excavation is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a multi-stage sand washing device for shield tunnel excavation, which has the advantages of simple structure, small size, and small footprint. This utility model completes the treatment of shield tunnel excavation after passing through the multi-stage sand washing device. While taking into account the sand washing effect, this device occupies a small size, which is also convenient for later installation and use. At the same time, it occupies less space, and the space utilization rate is greatly improved.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage sand washing device for tunnel boring machine excavation, comprising a housing, a primary sand washing screen fixedly installed inside the housing, a waterproof sleeve fixedly installed on the bottom surface of the primary sand washing screen, a second motor fixedly installed on the bottom surface of the primary sand washing screen, a rotating fan fixedly installed at the end of the main shaft of the second motor, and the rotating fan rotating inside the primary sand washing screen, a water-guiding ring fixedly installed on the bottom surface of the primary sand washing screen, a water-collecting hopper fixedly installed on the bottom surface of the water-guiding ring, a drain pipe fixedly installed on the bottom surface of the water-collecting hopper, and a secondary sand washing screen rotatably installed on the outside of the primary sand washing screen.

[0008] Preferably, a first motor is fixedly mounted on the top surface of the housing, and a main gear is fixedly mounted at the end of the main shaft of the first motor.

[0009] Preferably, both sides of the main gear are meshed with secondary gears, and a crushing wheel is fixedly installed inside the secondary gear.

[0010] Preferably, an alarm is fixedly installed in the box, and a hopper is fixedly installed on the top surface of the box, with the crushing wheel rotating inside the hopper.

[0011] Preferably, a support frame is fixedly provided on the bottom surface of the box, and the support frame is fixedly connected to the fixed frame.

[0012] Preferably, the box is fixedly provided with a water-blocking ring, and the secondary sand washing net rotates inside the water-blocking ring, and a storage box is fixedly provided at the bottom end of the water-blocking ring.

[0013] Preferably, the water-blocking ring has a water outlet channel fixedly installed inside, and the water outlet channel penetrates the box body.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention uses a second motor to drive a rotating fan and a secondary sand washing screen. The rotating fan rotates the internal slag, which is then screened by the efficient openings on the outer side of the primary sand washing screen, separating the slag and water. The slag then enters the secondary sand washing screen, where it is simultaneously rotated, and centrifugal force washes the slag again. All the sand washing devices are located inside the housing, minimizing external space usage. This invention completes the treatment of the tunnel boring machine slag through multiple stages of sand washing, achieving both effective washing and a small footprint, making installation and use convenient. This also significantly improves space utilization. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a multi-stage sand washing device for tunnel boring machine excavation proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting structure of the fixing frame proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the hopper proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the box body proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the primary sand washing mesh proposed in this utility model.

[0021] In the diagram: 1. Box body; 2. Support frame; 3. Hopper; 4. First motor; 5. Main gear; 6. Secondary gear; 7. Crushing wheel; 8. Second motor; 9. Rotating fan; 10. Primary sand washing screen; 11. Waterproof sleeve; 12. Water inlet ring; 13. Water collection hopper; 14. Drain pipe; 15. Fixing frame; 16. Water baffle ring; 17. Water outlet; 18. Storage box; 19. Secondary sand washing screen; 20. Alarm. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 5 As shown, this utility model provides a multi-stage sand washing device for tunnel boring machine (TBM) excavated soil, including a housing 1. A primary sand washing net 10 is fixedly installed inside the housing 1. A waterproof sleeve 11 is fixedly installed on the bottom surface of the primary sand washing net 10. A second motor 8 is fixedly installed on the bottom surface of the primary sand washing net 10. A rotating fan 9 is fixedly installed at the end of the main shaft of the second motor 8 and rotates inside the primary sand washing net 10. A water-guiding ring 12 is fixedly installed on the bottom surface of the primary sand washing net 10. A water-collecting hopper 13 is fixedly installed on the bottom surface of the water-guiding ring 12. A drain pipe 14 is fixedly installed on the bottom surface of the water-collecting hopper 13. A secondary sand washing net 19 is rotatably installed on the outside of the primary sand washing net 10. The primary sand washing net 10 and the secondary sand washing net 19 perform multi-stage sand washing treatment on the TBM excavated soil. While taking into account the sand washing effect, this device occupies a small volume, which is more convenient for later installation and use. At the same time, it occupies less space, which greatly improves the space utilization rate.

[0024] Specifically, a first motor 4 is fixedly installed on the top surface of the housing 1, and a main gear 5 is fixedly installed at the end of the main shaft of the first motor 4. The main gear 5 is driven by the first motor 4 to start rotating, and the main gear 5 is the power source.

[0025] Furthermore, the main gear 5 is meshed with the auxiliary gear 6 on both sides, and the auxiliary gear 6 is fixedly equipped with a crushing wheel 7 inside, which is used to crush larger soil clods in the slag.

[0026] Furthermore, an alarm 20 is fixedly installed on the housing 1, and a hopper 3 is fixedly installed on the top surface of the housing 1, with the crushing wheel 7 rotating inside the hopper 3. The alarm 20 is used to trigger an alarm to remind the staff when a problem occurs with the device.

[0027] It is worth noting that a support frame 2 is fixedly installed on the bottom surface of the box 1, and the support frame 2 is fixedly connected to the fixed frame 15. The support frame 2 is used to support all the components of the upper part to ensure its stability.

[0028] It is worth noting that a water-blocking ring 16 is fixedly installed in the box 1, and the secondary sand washing net 19 rotates inside the water-blocking ring 16. A storage box 18 is fixedly installed at the bottom of the water-blocking ring 16. The secondary sand washing net 19 uses centrifugal force to separate water and soil from the slag. The separated water enters the interior of the water-blocking ring 16, while the processed slag enters the storage box 18 for storage.

[0029] It is worth mentioning that the water baffle ring 16 has a water outlet 17 fixedly installed inside, and the water outlet 17 penetrates through the housing 1, so that the water inside the water baffle ring 16 is discharged into the device through the water outlet 17.

[0030] The first motor 4 and the second motor 8 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0031] Working principle and process:

[0032] When using a multi-stage sand washing device for tunnel boring machine (TBM) excavated soil, the TBM excavated soil is first fed into the hopper (3) on the top surface of the box (1) for sand washing. The support frame (2) on the bottom surface of the box (1) is used to support all the components of the upper part to ensure its stability. When the excavated soil enters the hopper (3), the switch of the first motor (4) is turned on. The first motor (4) drives the main gear (5) to rotate. The main gear (5) drives the auxiliary gears (6) on both sides to start rotating. The auxiliary gears (6) drive the crushing wheel (7). The rotation of the crushing wheel (7) crushes some oversized slag. The crushed slag falls into the interior of the primary sand washing screen (10). Then, the switch of the second motor (8) is turned on. The waterproof sleeve (11) on the outside of the second motor (8) is used to protect the second motor (8) from damage after contact with water. The second motor (8) drives the rotating fan (9) to start rotating. The rotating fan (9) drives the slag inside to rotate. During the rotation, the slag will enter the secondary sand washing screen through the small holes on the side of the primary sand washing screen (10). Inside the secondary sand washing screen (19), the water is rotated by the secondary sand washing screen (19), and then flows into the water inlet ring (12) through the hole at the bottom of the secondary sand washing screen (19), and then is discharged to the outside of the device through the drain pipe (14) along the water collection hopper (13). The fixing frame (15) here is used to support the drain pipe (14) to prevent it from collapsing due to gravity. The slag rotates inside the secondary sand washing screen (19), and the slag and water are separated a second time under the action of centrifugal force. The separated water The soil is drawn into the water-blocking ring (16) and finally discharged into the device through the water outlet (17). The treated slag is stored in the storage box (18). The alarm (20) is used to alert the staff when the device malfunctions. This utility model completes the treatment of shield tunnel slag after passing through a multi-stage sand washing device. While taking into account the sand washing effect, the device occupies a small volume and is more convenient for later installation and use. At the same time, it occupies less space and greatly improves the space utilization rate.

[0033] 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.

[0034] 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 shield sludge multi-stage sand washing device, comprising a box body (1), characterized in that: The inside of the box (1) is fixedly provided with a first sand washing net (10), the bottom surface of the first sand washing net (10) is fixedly provided with a waterproof sleeve (11), the bottom surface of the first sand washing net (10) is fixedly provided with a second motor (8), the main shaft end of the second motor (8) is fixedly provided with a rotating fan (9), and the rotating fan (9) rotates in the inside of the first sand washing net (10), the bottom surface of the first sand washing net (10) is fixedly provided with a water guide ring (12), the bottom surface of the water guide ring (12) is fixedly provided with a water collecting hopper (13), the bottom surface of the water collecting hopper (13) is fixedly provided with a drain pipe (14), and the outside of the first sand washing net (10) is rotatably provided with a second sand washing net (19).

2. The shield sludge multi-stage sand washing device according to claim 1, characterized in that: The top surface of the box (1) is fixedly provided with a first motor (4), and the main shaft end of the first motor (4) is fixedly provided with a main gear (5).

3. The multi-stage sand washing device for shield muck according to claim 2, characterized in that: The two sides of the main gear (5) are rotatably connected with auxiliary gears (6), and the inside of the auxiliary gears (6) is fixedly provided with crushing wheels (7).

4. The shield sludge multi-stage sand washing device according to claim 1, characterized in that: The box (1) is fixedly provided with an alarm (20), the top surface of the box (1) is fixedly provided with a hopper (3), and the crushing wheels (7) rotate in the inside of the hopper (3).

5. The shield sludge multi-stage sand washing device according to claim 1, characterized in that: The bottom surface of the box (1) is fixedly provided with a support frame (2), and the support frame (2) is fixedly connected with the fixing frame (15).

6. The shield sludge multi-stage sand washing device according to claim 1, characterized in that: The box (1) is fixedly provided with a water baffle (16), the second sand washing net (19) rotates in the inside of the water baffle (16), and the bottom end of the water baffle (16) is fixedly provided with a storage box (18).

7. The shield sludge multi-stage sand washing device according to claim 6, characterized in that: The inside of the water baffle (16) is fixedly provided with a water outlet (17), and the water outlet (17) penetrates the box (1).

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