Shield muck screening and on-site treatment device

Abstract

The utility model discloses a kind of shield muck screening and in-situ processing device, including multistage screen changer rotating shaft, primary particle screen changer;Particle pressure cutting device, secondary particle screen changer and pressure applying device, when working, screening blade is conveyed to hollow portion with particle and is cut to particle with particle pressure cutting device, the particle smaller than the grid size of primary screening grid falls into secondary particle screen changer with primary screening grid, and is conveyed to external processing equipment with secondary particle outlet.This utility model's multistage muck screening device rotates around same axle, and is surrounded all around, can maximumly reduce the generation of waste muck, so that muck can be completely reused to maximum extent.5 different ways are carried out for resource recycling treatment after muck is classified according to different particle size, and resource utilization mode and device function are combined according to different tunneling strata, to realize the extensive applicability of the developed technology.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling spoil treatment technology, specifically to a shield tunneling spoil screening and on-site treatment device. Background Technology

[0002] Currently, tunnel boring machines (TBMs) are increasingly used in tunnel construction. However, the excavated soil generated during construction is characterized by large quantities, pollution of aquatic environments, and significant encroachment on farmland. Direct transportation of this excavated soil would impact transportation routes and the air environment, and the cost of transportation varies depending on urban environmental protection requirements, which are trending upwards with increasing stringent standards. Therefore, there is an urgent need for a multi-stage excavated soil screening device and an on-site excavated soil treatment system that can significantly reduce environmental pollution during screening and transportation, thus possessing significant environmental protection value. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a shield tunneling excavation screening and on-site treatment device. Existing excavation screening devices require a large footprint, and the screened excavation needs to be transported to other locations for resource recovery. To address this issue, this invention proposes a shield tunneling excavation screening and on-site treatment device and technology, supplemented by mechanical equipment such as a filter press, aiming to improve the accuracy of excavation separation and the efficiency of reuse.

[0004] The objective of this utility model is achieved through the following technical solution: A shield tunneling excavation slag screening and on-site treatment device, comprising: The rotating shaft of the multi-stage filter has a structure with an open top and a hollow section. A primary particle screener is connected at the top position near the rotation axis of the multi-stage screener, and includes a primary cover, a primary screening grid, and screening blades. The primary screening grid is connected to the bottom of the primary cover, the rotation axis of the multi-stage screener passes through the middle of the primary screening grid, and the screening blades are connected to the top outer side of the rotation axis of the multi-stage screener. A particle pressure cutting device is disposed in the hollow part of the rotating shaft of the multi-stage screener; A secondary particle screener, connected to the rotating shaft of the multi-stage screener and located below the primary particle screener and the particle pressure cutting device, includes a secondary cover, brush blades, and a secondary screening mesh. The secondary screening mesh is connected to the bottom of the secondary cover, the rotating shaft of the multi-stage screener passes through the middle of the secondary screening mesh, and the secondary cover has a secondary particle outlet connected to external processing equipment. A pressure-applying device is positioned directly above the hollow portion of the rotating shaft of the multi-stage filter, and is used to apply pressure to the particles falling into the hollow portion; During operation, the screening blades convey the particles to the hollow section and cut them by the particle pressure cutting device. Particles smaller than the mesh size of the primary screening grid fall into the secondary particle screen through the primary screening grid and are then conveyed to external processing equipment through the secondary particle outlet.

[0005] Optionally, it also includes a cutting support device, which is connected to the rotating shaft of the multi-stage screener and located below the particle pressure cutting device, for supporting the particle pressure cutting device.

[0006] Optionally, the sidewall of the hollow portion is provided with a cutting outlet for conveying the cut particles to the outside.

[0007] Optionally, the screening blade has a blade rotation ring connected to the top outer side of the multi-stage filter rotation shaft. Multiple blades of the screening blade are evenly distributed around the outer circumference of the blade rotation ring and are in an up-and-down opening and closing state relative to each other. The blade ends of the screening blades are curved upwards and higher than the top of the multi-stage filter rotation shaft.

[0008] Optionally, it also includes a tertiary particle screen with the same structural dimensions as the secondary particle screen, the tertiary particle screen being located below the secondary particle screen, the tertiary particle screen including a tertiary cover, sweeping blades, and a tertiary screening grid.

[0009] Optionally, it also includes a fourth-stage particle screen with the same structural dimensions as the third-stage particle screen, the fourth-stage particle screen being located below the third-stage particle screen, the fourth-stage particle screen including a fourth-stage cover, sweeping blades and a fourth-stage screening grid.

[0010] Optionally, it also includes a tail-end filter press with the same structural dimensions as the four-stage particle screen, the tail-end filter press being located below the four-stage particle screen, and the tail-end filter press including a five-stage shroud and sweeping blades.

[0011] Optionally, the primary particle screener, the secondary particle screener, the tertiary particle screener, the quaternary particle screener, and the quinary particle screener are all connected to the rotating shaft of the multi-stage screener, and the brush blades of the primary particle screener, the secondary particle screener, the tertiary particle screener, the quaternary particle screener, and the quinary particle screener rotate around the same axis.

[0012] Optionally, the grid sizes of the first-level filter grid, the second-level filter grid, the third-level filter grid, and the fourth-level filter grid decrease sequentially.

[0013] The advantages of this utility model are: This utility model's multi-stage waste soil screening device rotates around the same axis and is completely surrounded on all four sides, minimizing the generation of waste soil and maximizing its reuse. The waste soil is classified according to different particle sizes and then processed for resource recovery in five different ways. The resource recovery methods and device functions are combined according to different geological formations, achieving broad applicability of the developed technology. The resource recovery device and related technologies of this utility model are all processed on-site at the construction site, and the screening device and resource recovery device are integrated into a single design, accelerating waste soil processing efficiency and ensuring smooth construction progress. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the shield tunneling slag screening and on-site treatment device of this utility model. Figure 2 This is a schematic diagram of the top of the shield tunneling slag screening and on-site treatment device of this utility model. Detailed Implementation

[0015] The markings in the diagram are as follows: 0-Shield tunneling mud particles; 1-Multi-stage screener rotating shaft; 101-Brush blade; 2-First-stage particle screener; 201-Screening blade; 202-First-stage screening grid; 203-Blade rotating ring; 204-Particle pressure cutting device; 205-Cutting load-bearing device; 206-Pressure application device; 210-Hollow section; 211-First-stage cover; 3-Second-stage particle screener; 301-Second-stage particle outlet; 302-Second-stage screening grid; 4-Third-stage particle screener; 401-Third-stage particle outlet; 402-Third-stage screening grid; 5-Fourth-stage particle screener; 501-Fourth-stage particle outlet; 502-Fourth-stage screening grid; 6-Tail-end filter press.

[0016] Example: Please refer to Figure 1 and Figure 2The diagram illustrates an embodiment of a shield tunneling excavation screening and on-site treatment device, comprising a multi-stage screening rotating shaft 1 with a top opening and a hollow portion 210; a primary particle screen 2 connected near the top of the multi-stage screening rotating shaft 1, comprising a primary cover 211, a primary screening grid 202, and screening blades 201, the primary screening grid 202 being connected to the bottom of the primary cover 210, the multi-stage screening rotating shaft 1 passing through the middle of the primary screening grid 202, and the screening blades 201 being connected to the top outer side of the multi-stage screening rotating shaft 1; a particle pressure cutting device 204 disposed within the hollow portion 210 of the multi-stage screening rotating shaft 1; and a secondary particle screen 3 connected to the multi-stage screening rotating shaft 1 and located below the primary particle screen 2 and the particle pressure cutting device 204, and containing... The system includes a secondary cover, brush blades 101, and a secondary screening grid 302. The secondary screening grid 302 is connected to the bottom of the secondary cover, and the multi-stage screener rotating shaft 1 passes through the middle of the secondary screening grid 302. The secondary cover has a secondary particle outlet 301, which is connected to an external processing device (not shown). A pressure device 206 is also included, positioned directly above the hollow portion 210 of the multi-stage screener rotating shaft 1, used to apply pressure to the particles 0 falling into the hollow portion. During operation, the screening blades 201 convey the particles 0 to the hollow portion 210, and the particles 0 are cut by the particle pressure cutting device 204. Particles 0 smaller than the grid size of the primary screening grid 202 fall into the secondary particle screener 3 through the primary screening grid 202 and are conveyed to the external processing device through the secondary particle outlet 301.

[0017] In this embodiment, a cutting and supporting device 205 is also included, which is connected to the rotating shaft 1 of the multi-stage screener and located below the particle pressure cutting device 204, for supporting the particle pressure cutting device 204.

[0018] In this embodiment, the side wall of the hollow part 210 is provided with a cutting outlet (not shown) for conveying the cut particles 0 to the outside.

[0019] In this embodiment, as Figure 2 As shown, the screening blade 201 has a blade rotation ring 203 connected to the top outer side of the multi-stage screener rotation shaft 1. Multiple blades of the screening blade 201 are evenly distributed around the outer circumference of the blade rotation ring 203 and are in an up-and-down opening and closing state relative to each other. The blade ends of the screening blade 201 are curved upwards and higher than the top of the multi-stage screener rotation shaft 1.

[0020] In this embodiment, a tertiary particle screener 4 with the same structural dimensions as the secondary particle screener 3 is also included. The tertiary particle screener 4 is located below the secondary particle screener 3 and includes a tertiary cover, a brush blade 101, and a tertiary screening grid 402.

[0021] In this embodiment, a fourth-stage particle screen 5 with the same structural dimensions as the third-stage particle screen 4 is also included. The fourth-stage particle screen 5 is located below the third-stage particle screen 4. The fourth-stage particle screen 5 includes a fourth-stage cover, a brush blade 101, and a fourth-stage screening grid 502.

[0022] In this embodiment, a tail-end filter press 6 with the same structural dimensions as the four-stage particle screen 5 is also included. The tail-end filter press 6 is located below the four-stage particle screen 5 and includes a five-stage cover and brush blades 101.

[0023] In this embodiment, the primary particle screener 2, the secondary particle screener 3, the tertiary particle screener 4, the quaternary particle screener 5, and the quinary particle screener 7 are all connected to the multi-stage screener rotating shaft 1, and the sweeping blades 101 and screening blades 201 of the primary particle screener 2, the secondary particle screener 3, the tertiary particle screener 4, the quaternary particle screener 5, and the quinary particle screener 7 rotate around the same axis.

[0024] In this embodiment, the grid sizes of the first-level screening grid 202, the second-level screening grid 302, the third-level screening grid 402, and the fourth-level screening grid 502 decrease sequentially.

[0025] The following description will further illustrate the characteristics and functions of this utility model.

[0026] The purpose of this embodiment is to address the issue that existing slag screening devices occupy a large area, and the slag after screening needs to be transported to other locations for resource recovery. To address this, a shield tunneling slag screening and on-site treatment device and technology is proposed, supplemented by mechanical equipment such as filter presses, aiming to improve the slag separation accuracy and reuse efficiency.

[0027] The shield tunneling excavation slag screening and on-site treatment device and technology of this embodiment includes a five-stage slag screening system and a reuse device. The first-stage particle screen includes screening blades, a first-stage screening grid, a blade rotating ring, a particle pressure cutting device, a cutting load-bearing device, and a pressure application device; the second to fourth-stage screens each include particle outlets for each stage and screening grids; the fifth-stage screen is directly connected to a filter press, realizing multi-stage precise screening and on-site resource utilization of the slag.

[0028] The screening and recycling devices are large-scale integrated units, and the particles at each level will be used for resource utilization in different ways after screening.

[0029] Grade 1 particles are defined as particles with a diameter ≥ 50 mm; Grade 2 particles are defined as particles with a diameter of 30-50 mm; Grade 3 particles are defined as particles with a diameter of 10-30 mm; Grade 4 particles are defined as particles with a diameter of 5-10 mm; and Grade 5 particles are defined as particles with a diameter ≤ 5 mm.

[0030] The screening device consists of five stages. Stages two through five are tightly connected to prevent slag from scattering outside the device during screening, thus avoiding the waste of manpower and resources for secondary cleaning. Each screening unit uses coaxial vibration to screen particles of different sizes. The device is started 10 minutes before the slag is transported to it, and a small amount of slag is poured in for pre-testing. Any problematic modules are then improved and adjusted. Once the entire device is running smoothly, the formal slag screening process begins.

[0031] The screening blades 201 rotate around the blade ring 203 in an up-and-down opening and closing state. After the device is started, the screener vibrates around the multi-stage screener rotating shaft 1. Large particles are moved to the surface of the particle layer. After the screening blades 2012 scoop up the mud particles of the first-stage particles, the screening blades 201 rotate around the blade ring 203 towards the cavity inside the multi-stage screener rotating shaft 1 (i.e., the hollow part 210). The first-stage particles are transported to the hollow part 210 of the multi-stage screener rotating shaft 1, and then continuously cut into flakes by the particle pressure cutting device 204. The particle pressure cutting device 204 has a cutting support device 205 at the bottom, which is used as a support device during cutting. The pressure device 206 is located at the top of the multi-stage screener rotating shaft 1 and is a force-bearing device to press down the particles. The cut stone flakes are transported to the outside of the system by the conveying device inside the multi-stage screener rotating shaft 1. After drying, they are transported to the scenic area where landscaping is needed or used for mine restoration landscaping.

[0032] Particles smaller than 50mm, screened by the primary screening grid 202, enter the secondary particle screen 3 for secondary screening. During the vibration process, the brush blades 101 of each screen rotate continuously. The brush blades 101 of each screen are made of a softer material near the screening grid to facilitate the removal of particles stuck in the grid, and a harder material away from the screening grid to ensure that the particles in the screen are thoroughly swept, maximizing the screening of particles smaller than the screening grid to the third stage. The particles remaining in the secondary particle screen 3 after screening are transported from the secondary particle outlet to the mixing unit, where they are thoroughly mixed with other materials to prepare non-fired bricks. After drying, these bricks are transported to the corresponding building materials market for secondary use.

[0033] The particles obtained by screening through the secondary screening grid 302 enter the tertiary particle screen 4 for tertiary screening, with the same principle as the secondary screening. The particles screened through this stage undergo drying and micro-grinding treatment at the tertiary particle outlet to meet the corresponding requirements and are then used to prepare concrete.

[0034] Particles obtained through the three-stage screening grid 402 enter the four-stage particle screen 5 for fourth-stage screening, with the same principle as the two-stage screening. The particles screened through this stage are directly transported through the fourth-stage particle outlet to flood control bags and sealed. These bags are then transported to areas requiring flood prevention and control.

[0035] The particles obtained by the four-stage screening mesh screen 502 enter the tail end filter press 6. The bottom of the tail end filter press is connected to the filter press, and the particles ≤5mm are pressed into mud cakes for external transportation.

[0036] In summary, the multi-stage slag screening device of this invention rotates around the same axis and is completely surrounded on all four sides, which can minimize the generation of waste slag and enable the slag to be fully reused to the greatest extent. The slag is classified according to different particle sizes and then processed for resource recycling in five different ways. The resource recycling methods and device functions are combined according to different tunneling strata, achieving wide applicability of the developed technology. The resource recycling device and related technologies of this invention are all processed on-site at the construction site, and the screening device and resource recycling device are integrated into a single design, which can accelerate the slag processing efficiency and ensure smooth construction.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for screening and on-site treatment of tunnel boring machine (TBM) slag, characterized in that, include: The rotating shaft of the multi-stage filter has a structure with an open top and a hollow section. A primary particle screener is connected at the top position near the rotation axis of the multi-stage screener, and includes a primary cover, a primary screening grid, and screening blades. The primary screening grid is connected to the bottom of the primary cover, the rotation axis of the multi-stage screener passes through the middle of the primary screening grid, and the screening blades are connected to the top outer side of the rotation axis of the multi-stage screener. A particle pressure cutting device is disposed in the hollow part of the rotating shaft of the multi-stage screener; A secondary particle screener is connected to the rotating shaft of the multi-stage screener and located below the primary particle screener and the particle pressure cutting device. It includes a secondary cover, brush blades, and a secondary screening grid. The secondary screening grid is connected to the bottom of the secondary cover. The rotating shaft of the multi-stage screener passes through the middle of the secondary screening grid. The secondary cover has a secondary particle outlet, which is connected to an external processing device. as well as A pressure-applying device is positioned directly above the hollow portion of the rotating shaft of the multi-stage filter, and is used to apply pressure to the particles falling into the hollow portion; During operation, the screening blades convey the particles to the hollow section and cut them by the particle pressure cutting device. Particles smaller than the mesh size of the primary screening grid fall into the secondary particle screen through the primary screening grid and are then conveyed to external processing equipment through the secondary particle outlet.

2. The shield tunneling muck screening and on-site treatment device according to claim 1, characterized in that, It also includes a cutting and supporting device, which is connected to the rotating shaft of the multi-stage screener and located below the particle pressure cutting device, for supporting the particle pressure cutting device.

3. The shield tunneling spoil screening and on-site treatment device according to claim 2, characterized in that, The hollow section has a cutting outlet on its side wall for conveying the cut particles to the outside.

4. The shield tunneling muck screening and on-site treatment device according to claim 3, characterized in that, The screening blade has a blade rotation ring connected to the top outer side of the multi-stage filter rotation shaft. Multiple blades of the screening blade are evenly distributed around the outer circumference of the blade rotation ring and are in an up-and-down opening and closing state relative to each other. The blade ends of the screening blades are curved upwards and are higher than the top of the multi-stage filter rotation shaft.

5. The shield tunneling muck screening and on-site treatment device according to claim 4, characterized in that, It also includes a tertiary particle screen with the same structural dimensions as the secondary particle screen. The tertiary particle screen is located below the secondary particle screen and includes a tertiary cover, brush blades, and a tertiary screening grid.

6. The shield tunneling muck screening and on-site treatment device according to claim 5, characterized in that, It also includes a fourth-stage particle screen with the same structural dimensions as the three-stage particle screen. The fourth-stage particle screen is located below the three-stage particle screen and includes a four-stage cover, brush blades, and a four-stage screening grid.

7. The shield tunneling muck screening and on-site treatment device according to claim 6, characterized in that, It also includes a tail-end filter press with the same structural dimensions as the four-stage particle screener. The tail-end filter press is located below the four-stage particle screener and includes a five-stage shroud and brush blades.

8. The shield tunneling muck screening and on-site treatment device according to claim 7, characterized in that, The first-stage particle screener, the second-stage particle screener, the third-stage particle screener, the fourth-stage particle screener, and the fifth-stage particle screener are all connected to the rotating shaft of the multi-stage screener, and the brush blades of the first-stage particle screener, the second-stage particle screener, the third-stage particle screener, the fourth-stage particle screener, and the fifth-stage particle screener rotate around the same axis.

9. The shield tunneling spoil screening and on-site treatment device according to claim 8, characterized in that, The grid sizes of the first-level filter grid, the second-level filter grid, the third-level filter grid, and the fourth-level filter grid decrease sequentially.

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