TBM mudstone recycling device
By using the slag screening module and slurry mixing module of the TBM mudstone recycling device, the problems of high cost and low efficiency in slag treatment during TBM tunnel construction have been solved. The device enables rapid on-site screening and recycling of slag, improving resource utilization and reducing environmental pollution risks.
Patent Information
- Application Number
- CN202520485131.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing technologies, the treatment of excavated soil generated during TBM tunnel construction is costly and inefficient, making it difficult to achieve efficient resource utilization, and off-site treatment may lead to environmental pollution.
The TBM mudstone recycling device includes a slag screening module, a slurry mixing module, and a conveying module. It uses a double-layer vibrating screen to screen mudstone slag and automatically prepares recycled slurry for synchronous grouting, realizing the on-site recycling of slag.
It enables rapid screening and recycling of construction waste, improves resource utilization, reduces equipment volume, and lowers construction costs and environmental pollution risks.
Smart Images
Figure CN223724608U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to TBM tunnel construction slag treatment technical field, concretely relates to a kind of TBM mudstone recycling device, for realizing the on-site screening of mudstone slag and the preparation of regenerated slurry. BACKGROUND
[0002] In TBM tunnel construction, a large amount of slag will be produced with stratum excavation. This slag usually has the characteristics of fine particles, high water content and high viscosity. The traditional treatment method is to transport these slags to the outside for solidification treatment, and finally dispose them as waste. However, this treatment method not only has high cost, but also has long solidification time and low processing efficiency, which is difficult to meet the requirements of resource utilization and environmental protection in modern tunnel construction. This traditional slag treatment method needs to consume a lot of manpower, material resources and time. First of all, the transportation of slag needs to use large transportation equipment, which increases the construction cost. Secondly, the solidification treatment process outside the field takes a long time, which may cause delay of construction progress. Finally, the treatment of slag as waste not only wastes valuable resources, but also may pollute the environment. Therefore, this traditional slag treatment method has been difficult to meet the needs of modern tunnel engineering.
[0003] In the prior art, although some researches try to realize the recycling of slag by screening and crushing, these technologies are mostly dependent on off-site treatment equipment and cannot realize rapid treatment on site. For example, the traditional screening and crushing equipment needs to occupy a large site and needs a complex operation process, which is difficult to be directly applied to the tunnel construction site. This off-site treatment method not only increases the construction cost, but also may cause secondary pollution of slag during transportation, further aggravating the environmental problem. In addition, due to the high water content of slag, problems such as hole blockage and equipment wear and tear may occur during off-site treatment, further limiting the efficiency and feasibility of its actual application.
[0004] Therefore, an integrated device is needed to directly complete the screening, conveying and slurry preparation of slag on the tunnel construction site, so as to realize efficient utilization of resources. UTILITY MODEL CONTENT
[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a TBM mudstone recycling device capable of realizing on-site recycling of mudstone slag, which separates qualified mudstone particles in TBM rock machine and automatically configures them into regenerated slurry for synchronous grouting, to realize on-site recycling of mudstone slag.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a TBM mudstone recycling device, characterized by comprising a slag screening module, a slurry stirring module and a conveying module.
[0007] The slag screening module comprises a screw conveyor (101), a first layer screen (201), a second layer screen (202), a vibrator (203) and a stainless steel chute (204); the slurry stirring module comprises a weighing sensor (301), a double-shaft screw stirrer (302) and a stirring pool (303); the conveying module comprises a water pump (401), a raw material conveying belt (102) and a waste slag conveying belt (103).
[0008] As an optimization, the lower half of the pipe wall of the screw conveyor (101) is cancelled and replaced by the first layer screen (201), the mesh size of the first layer screen (201) is 0.5 mm, the shale particles with a particle size less than 0.5 mm and water are screened out, the retained slag is waste slag, and the screening of the available slag is completed immediately after the slag is excavated during the conveying process. The vibrator (203) can prevent the first layer screen (201) from being blocked.
[0009] As an optimization, the mesh size of the second layer screen (202) is 0.08 mm, the qualified particles with a particle size between 0.08 mm and 0.5 mm are separated from the particles with a particle size less than 0.5 mm and water screened out from the first layer screen (201), the qualified particles become the retained slag of the second layer screen (202), and the particles with a particle size less than 0.08 mm and water are screened out as waste, the stainless steel chute (204) is arranged below the second layer screen (202) to guide the waste to be discharged, the inclination angle of the second layer screen (202) and the stainless steel chute (204) is 15° to 30°, and the vibrator (203) can prevent the second layer screen (202) from being blocked and accelerate the movement of the particles on the second layer screen (202) and the stainless steel chute (204).
[0010] As an optimization, the first layer screen (201) and the second layer screen (202) are made of 304 stainless steel material, which prolongs the service life and reduces the maintenance cost.
[0011] As an optimization, the frequency of the vibrator (203) is 200-250 Hz, the vibrator (203) makes the first layer screen (201), the second layer screen (202) and the stainless steel chute (204) vibrate at the same time, the amplitude of the first layer screen (201) is 1-3 mm, the amplitude of the second layer screen (202) is 5-8 mm, and the amplitude of the stainless steel chute (204) is 1-2 mm, which improves the screening efficiency.
[0012] As an optimization, the weighing sensor (301) is arranged at the bottom of the stirring pool (303), the qualified particle mass screened out is automatically weighed, the mass of other raw materials required by the slurry is calculated according to the slurry mixing ratio, and the slurry stirring pool is added, and the double-shaft spiral agitator (302) in the slurry stirring pool is stirred to obtain the slurry; the stirring speed of the double-shaft spiral agitator (302) is 30-60 rpm.
[0013] As an optimization, the waste residue conveying belt (103) is arranged at the end of the screw conveyor (101) to transport the waste residue screened out by the first layer of screen (201); the raw material conveying belt (102) is connected at the end of the second layer of screen (202) to convey the qualified particles to the stirring pool (303); the water pump (401) is connected to the end of the stainless steel chute (204) to pump the mudstone particles with a particle size less than 0.08 mm and water as waste to the waste residue conveying belt (103) and transported out with the waste residue.
[0014] As an optimization, the surface of the waste residue conveying belt (103) is covered with a wear-resistant rubber layer to improve the service life.
[0015] As an optimization, the stainless steel chute (204) is made of 304 stainless steel material, the surface is smooth and free of burrs, and the residue is prevented from adhering.
[0016] An operation process of a TBM mudstone recycling device, comprising the following steps:
[0017] S1: excavating mudstone stratum:
[0018] The TBM excavates the mudstone stratum, and the excavated TBM residue passes through the cutter head into the soil bin and is mixed with the foam agent, the bentonite slurry and water input by the mud pipe;
[0019] S2: screening out qualified mudstone residue particles from the TBM residue and conveying them to the slurry stirring pool:
[0020] During the transportation of the TBM residue in the soil bin by the screw conveyor (101), the first layer of screen (201) with 0.5 mm square mesh is arranged on the lower half of the pipe wall of the screw conveyor, the mudstone particles with a maximum particle size not exceeding 0.5 mm and water are screened out below the first layer of screen, the screened waste TBM residue will continue to be conveyed by the screw conveyor to the waste residue conveying belt (103) and transported out, and a vibrator (203) with a frequency of 200 Hz is arranged on the first layer of screen to prevent the mesh from being blocked by the residue particles;
[0021] Meanwhile, a second layer of screen mesh (202) with square mesh of 0.08 mm is arranged vertically 10 cm below the first layer of screen mesh, and a stainless steel chute (204) is arranged vertically 10 cm below the second layer of screen mesh, so that water and shale particles with a particle size less than 0.08 mm will fall onto the stainless steel chute, slide along the stainless steel chute to the water pump (401) and be pumped onto the waste residue conveying belt together with the waste TBM residue screened by the first layer of screen mesh;
[0022] The particle size of the qualified shale residue on the second layer of screen mesh is between 0.08 mm and 0.5 mm, and a vibrator (203) with a frequency of 200 Hz is arranged on the second layer of screen mesh to prevent the mesh from being blocked and promote the shale residue on the second layer of screen mesh to slide downward along the screen mesh and fall onto the raw material conveying belt (102) and be conveyed to the slurry mixing tank;
[0023] S3: cement, fly ash and water are added to the slurry mixing tank, and the slurry is obtained by stirring:
[0024] A weighing sensor (301) is arranged below the slurry mixing tank to automatically weigh the mass of the qualified shale residue screened by the first layer of screen mesh, and the mass of the cement, fly ash and water required according to the mixing ratio of shale residue: cement: fly ash: water = 6:2:3:4 or other slurry mixing ratios is calculated, the cement, fly ash and water are added to the slurry mixing tank according to the calculated mass, and the slurry is obtained by stirring using the stirrer (302) in the slurry mixing tank;
[0025] S4: conveying the slurry to the shield tail for synchronous grouting:
[0026] The slurry in the slurry mixing tank is conveyed to the shield tail through the grouting pipe for synchronous grouting.
[0027] Compared with the prior art, the TBM shale recycling device has the following advantages:
[0028] The TBM shale recycling device provided by the utility model realizes on-site rapid screening and recycling of shale residue, improves resource utilization rate, and has small equipment occupation volume, and is operable and applicable. BRIEF DESCRIPTION OF DRAWINGS
[0029] The accompanying drawings are only used to show the embodiments and are not considered as limiting the present application. Moreover, the same components are used with the same nomenclature throughout the drawings. In the drawings:
[0030] Figure 1 It is a schematic diagram of the overall structure of the device.
[0031] Figure 2 It is a detail view of the screening module.
[0032] Figure 3 It is a schematic diagram of the slurry stirring module.
[0033] In the drawings: 101, screw conveyor; 102, raw material conveying belt; 103, waste residue conveying belt; 201, first layer screen; 202, second layer screen; 203, vibrator; 204, stainless steel chute; 301, weighing sensor; 302, double-shaft spiral stirrer; 303, stirring pool; 401, water pump DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0035] Embodiment one:
[0036] Please refer to the accompanying Figure 1 ~ the accompanying Figure 3 The TBM mudstone recycling device provided in the embodiment includes a residue screening module, a slurry stirring module and a conveying module: the residue screening module includes a screw conveyor (101), a first layer screen (201), a second layer screen (202), a vibrator (203) and a stainless steel chute (204); the slurry stirring module includes a weighing sensor (301), a double-shaft spiral stirrer (302) and a stirring pool (303); and the conveying module includes a water pump (401), a raw material conveying belt (102) and a waste residue conveying belt (103).
[0037] In the embodiment, the lower half of the tube wall of the screw conveyor (101) is cancelled and replaced by the first layer screen (201), the mesh size of the first layer screen (201) is 0.5 mm, the mudstone particles and water with a particle size less than 0.5 mm are screened, the waste residue is the oversize, the frequency of the vibrator (203) is 250 Hz, the screening of the usable waste residue is completed immediately after the waste residue is excavated during the conveying process, and the vibrator (203) can prevent the first layer screen (201) from being blocked.
[0038] In this embodiment, the mesh size of the second layer screen (202) is 0.08 mm, the particles with a particle size less than 0.5 mm screened out from the first layer screen (201) and water are separated from the qualified particles with a particle size between 0.08 mm and 0.5 mm, the qualified particles become the screen residue of the second layer screen (202), and the particles with a particle size less than 0.08 mm and water are screened out as waste, a stainless steel chute (204) is arranged below the second layer screen (202) to guide the waste to be discharged, the inclination angle of the second layer screen (202) and the stainless steel chute (204) is 30°, and the vibrator (203) can prevent the second layer screen (202) from being blocked and accelerate the movement of the particles on the second layer screen (202) and the stainless steel chute (204).
[0039] In this embodiment, the first layer screen (201) and the second layer screen (202) are made of 304 stainless steel material, which prolongs the service life and reduces the maintenance cost.
[0040] In this embodiment, the frequency of the vibrator (203) is 250 Hz, the vibrator (203) causes the first layer screen (201), the second layer screen (202) and the stainless steel chute (204) to vibrate simultaneously, the amplitude of the first layer screen (201) is 1-3 mm, the amplitude of the second layer screen (202) is 5-8 mm, and the amplitude of the stainless steel chute (204) is 1-2 mm, which further improves the screening efficiency. In this embodiment, most of the amplitudes are close to the large value of the amplitude range.
[0041] In this embodiment, the weighing sensor (301) is arranged at the bottom of the stirring tank (303) to automatically weigh the mass of the qualified particles screened out, calculate the mass of other raw materials required for the slurry according to the slurry mixing ratio, and add the other raw materials to the slurry stirring tank. The double-shaft spiral stirrer (302) in the slurry stirring tank stirs to obtain the slurry; the stirring speed of the double-shaft spiral stirrer (302) is 30 rpm.
[0042] In this embodiment, the waste residue conveying belt (103) is arranged at the end of the screw conveyor (101) to transport the waste residue screened out by the first layer screen (201) and discharged; the raw material conveying belt (102) is connected to the end of the second layer screen (202) to convey the qualified particles to the stirring tank (303); the water pump (401) is connected to the end of the stainless steel chute (204) to pump the shale particles with a particle size less than 0.08 mm and water as waste to the waste residue conveying belt (103) and transport them out together with the waste residue.
[0043] In this embodiment, the surface of the waste residue conveying belt (103) is covered with a wear-resistant rubber layer to improve the service life.
[0044] In this embodiment, the stainless steel chute (204) is made of 304 stainless steel material, smooth surface without burr, to prevent the slag attached.
[0045] This embodiment is suitable for soft rock tunnel construction. In soft rock tunnel construction, the mudstone slag particles generated by TBM excavation are relatively fine, the water content is relatively high, the screen inclination angle is 30°, the stirring speed of the double-shaft spiral stirrer is 30 rpm, but the vibrator frequency is adjusted to 250 Hz to prevent blockage.
[0046] Example two:
[0047] Please refer to the attached Figure 1 ~ attached Figure 3 This embodiment is a further description of example one. The TBM mudstone recycling device provided in this embodiment includes a slag screening module, a slurry stirring module, and a conveying module: the slag screening module includes a spiral conveyor (101), a first layer of screen mesh (201), a second layer of screen mesh (202), a vibrator (203), and a stainless steel chute (204); the slurry stirring module includes a weighing sensor (301), a double-shaft spiral stirrer (302), and a stirring pool (303); the conveying module includes a water pump (401), a raw material conveying belt (102), and a waste slag conveying belt (103).
[0048] In this embodiment, the lower half of the tube wall of the spiral conveyor (101) is cancelled and replaced by the first layer of screen mesh (201). The mesh size of the first layer of screen mesh (201) is 0.5 mm. The mudstone particles with a particle size less than 0.5 mm and water are screened out, and the remaining rock slag is waste slag. The frequency of the vibrator (203) is 200 Hz, which realizes the screening of usable rock slag immediately after the rock slag is excavated and conveyed. The vibrator (203) can prevent the first layer of screen mesh (201) from being blocked.
[0049] In this embodiment, the mesh size of the second layer of screen mesh (202) is 0.08 mm. The qualified particles with a particle size between 0.08 mm and 0.5 mm are separated from the particles with a particle size less than 0.5 mm and water screened from the first layer of screen mesh (201). The qualified particles become the screen residue of the second layer of screen mesh (202), and the particles with a particle size less than 0.08 mm and water are screened as waste. A stainless steel chute (204) is arranged below the second layer of screen mesh (202) to guide the waste to be discharged. The inclination angle of the second layer of screen mesh (202) and the stainless steel chute (204) is 15°. The vibrator (203) can prevent the second layer of screen mesh (202) from being blocked and accelerate the movement of particles on the second layer of screen mesh (202) and the stainless steel chute (204).
[0050] In this embodiment, the first layer screen (201) and the second layer screen (202) are made of 304 stainless steel material, which prolongs the service life and reduces the maintenance cost.
[0051] In this embodiment, the frequency of the vibrator (203) is 200Hz, the vibrator (203) makes the first layer screen (201), the second layer screen (202) and the stainless steel chute (204) vibrate at the same time, the amplitude of the first layer screen (201) is 1-3mm, the amplitude of the second layer screen (202) is 5-8mm, and the amplitude of the stainless steel chute (204) is 1-2mm, which further improves the screening efficiency. In this embodiment, most of the amplitudes are close to the small value of the amplitude range.
[0052] In this embodiment, the weighing sensor (301) is arranged at the bottom of the stirring pool (303), which automatically weighs the qualified particle mass screened out, calculates the mass of other raw materials required for the slurry according to the slurry mixing ratio, and adds the slurry to the slurry stirring pool. The double-shaft spiral stirrer (302) in the slurry stirring pool is stirred to obtain the slurry; the stirring speed of the double-shaft spiral stirrer (302) is 60rpm.
[0053] In this embodiment, the waste residue conveying belt (103) is arranged at the end of the screw conveyor (101), which transports the waste residue screened out by the first layer screen (201) out; the raw material conveying belt (102) is connected at the end of the second layer screen (202), which is used to convey the qualified particles to the stirring pool (303); the water pump (401) is connected to the end of the stainless steel chute (204), which pumps the mudstone particles with a particle size less than 0.08mm and water as waste to the waste residue conveying belt (103) and transports them out together with the waste residue.
[0054] In this embodiment, the surface of the waste residue conveying belt (103) is covered with a wear-resistant rubber layer to improve the service life.
[0055] In this embodiment, the stainless steel chute (204) is made of 304 stainless steel material, which is smooth and has no burrs on the surface to prevent the slag from adhering.
[0056] This embodiment is suitable for hard rock tunnel construction. In hard rock tunnel construction, the mudstone slag particles generated by TBM tunneling are relatively coarse and irregular. The frequency of the vibrator (203) is 200Hz, the inclination angle of the screen is 15°, and the smaller value can complete the screening in this embodiment. The stirring speed of the double-shaft spiral stirrer is 60rpm, and the higher speed is beneficial to uniform stirring of the slurry.
[0057] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it should be taken in its broadest possible sense. This is especially so where "comprising", "including", "containing", "characterized by" or the like are used as subordinating conjunctions. In this context, "comprising" is intended to mean that the embodiments can include a combination of one or more elements and / or features, including those not expressly listed or described, without necessarily excluding other elements or features. Thus, it is to be understood that the description is intended to be illustrative, but not restrictive, of the scope of the application, and that modifications, changes, substitutions, and alternatives are intended to be implicit.
[0058] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous further modifications and changes can be apparent to one skilled in the art without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims and their equivalents.
Claims
1. A TBM mudstone recycling device, characterized in that, The slag screening module, the slurry stirring module and the conveying module are included. The slag screening module includes a screw conveyor (101), a first layer screen (201), a second layer screen (202), a vibrator (203) and a stainless steel chute (204). The slurry stirring module includes a weighing sensor (301), a double-shaft spiral stirrer (302) and a stirring pool (303). The conveying module includes a water pump (401), a raw material conveying belt (102) and a waste residue conveying belt (103).
2. The TBM muck reclamation device of claim 1, wherein, The lower half of the pipe wall of the screw conveyor (101) is cancelled and replaced by the first layer screen (201), the mesh size of the first layer screen (201) is 0.5 mm, the shale particles with a particle size less than 0.5 mm and water are screened out, and the waste residue is the waste residue.
3. The TBM muck reclamation device of claim 1, wherein, The mesh size of the second layer screen (202) is 0.08 mm, the qualified particles with a particle size between 0.08 mm and 0.5 mm are separated from the particles with a particle size less than 0.5 mm and water screened from the first layer screen (201), the qualified particles become the waste residue of the second layer screen (202), and the particles with a particle size less than 0.08 mm and water are screened out as waste, the stainless steel chute (204) is arranged below the second layer screen (202) to guide the waste to be discharged, and the inclination angle of the second layer screen (202) and the stainless steel chute (204) is 15° to 30°.
4. The TBM muck reclamation device of claim 1, wherein, The first layer screen (201) and the second layer screen (202) are made of 304 stainless steel.
5. The TBM shale reclamation device of claim 1, wherein, The frequency of the vibrator (203) is 200-250 Hz, the vibrator (203) simultaneously vibrates the first layer screen (201), the second layer screen (202) and the stainless steel chute (204), the amplitude of the first layer screen (201) is 1-3 mm, the amplitude of the second layer screen (202) is 5-8 mm, and the amplitude of the stainless steel chute (204) is 1-2 mm.
6. The TBM muck reclamation device of claim 1, wherein, The weighing sensor (301) is arranged at the bottom of the stirring pool (303) to automatically weigh the mass of the qualified particles screened out, calculate the mass of other raw materials required for the slurry according to the slurry mixing ratio, and add the other raw materials to the slurry stirring pool, and the double-shaft spiral stirrer (302) in the slurry stirring pool stirs to obtain the slurry; the stirring speed of the double-shaft spiral stirrer (302) is 30-60 rpm.
7. The TBM shale reclamation device of claim 1, wherein, The waste residue conveying belt (103) is arranged at the end of the screw conveyor (101) to transport the waste residue screened out by the first layer screen (201) away; the raw material conveying belt (102) is connected to the end of the second layer screen (202) to convey the qualified particles to the stirring pool (303); and the water pump (401) is connected to the end of the stainless steel chute (204) to pump the shale particles with a particle size less than 0.08 mm and water as waste to the waste residue conveying belt (103) to be transported out together with the waste residue.
8. The TBM muck reclamation device of claim 1, wherein, The surface of the waste residue conveying belt (103) is covered with a wear-resistant rubber layer to improve the service life.
9. The TBM shale reclamation device of claim 1, wherein, The stainless steel chute (204) is made of 304 stainless steel, has a smooth surface without burrs, and prevents the slag from adhering.