A kind of mixing device for making fluidified solidified soil to replace shield synchronous mortar

Abstract

The utility model discloses a kind of preparation fluidified solidified soil alternative shield synchronous mortar's mixing device, including rack and the vibration screen assembly and mixing bucket assembly being set on rack, the vibration screen assembly includes vibration screen shell, the mud cutter being set in vibration screen shell, vibration screen, flush pipeline and vibration screen discharge pipeline;The mixing bucket assembly includes mixing bucket, outer circulation pipeline, inner circulation pipeline and the stirring mechanism being set on mixing bucket, the outer circulation pipeline one end is connected on mixing bucket, other end is connected on flush pipeline, density measuring instrument is equipped on the inner circulation pipeline, the stirring end of the stirring mechanism is located mixing bucket bottom;Mixing bucket bottom is equipped with weighing mechanism, the mass and density of slurry mixture can be regulated.

Description

Technical Field

[0001] This utility model relates to the field of solidified soil treatment technology, specifically to a mixing device for producing fluidized solidified soil to replace shield tunnel synchronous mortar. Background Technology

[0002] Liquid solidification and resource utilization technology for excavated soil can solve the problem at its source, which is crucial for achieving green urban development and improving resource utilization efficiency. It is also an effective way to achieve carbon peaking and carbon neutrality. In existing technologies, the dissolution and mixing of solidified soil generally involves directly adding solidified soil and water to a mixing tank and mixing it with a mixer. However, the existing mixing methods have poor dissolution effects and cannot control the density and quality of the soil. Utility Model Content

[0003] To solve the above technical problems, this utility model provides a mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar, which has a good mud-dissolving effect and can control the quality and density of the mud mixture.

[0004] The present invention adopts the following technical solution:

[0005] A mixing device for producing fluidized solidified soil to replace synchronous mortar for tunnel boring machines includes a frame and a vibrating screen assembly and a mixing tank assembly mounted on the frame. The vibrating screen assembly includes a vibrating screen shell, a mud-dissolving blade disposed within the vibrating screen shell, a vibrating screen, a flushing pipe, and a vibrating screen discharge pipe. The mixing tank assembly includes a mixing tank, an external circulation pipe, an internal circulation pipe, and a mixing mechanism mounted on the mixing tank. One end of the external circulation pipe is connected to the mixing tank, and the other end is connected to the flushing pipe. A density measuring instrument is installed on the internal circulation pipe. The mixing end of the mixing mechanism is located at the bottom of the mixing tank. A weighing mechanism is installed at the bottom of the mixing tank. The density of the mud is monitored in real time by the density measuring instrument on the internal circulation pipe, and the weight data fed back by the weighing mechanism at the bottom of the mixing tank is combined to achieve dynamic density adjustment.

[0006] Preferably, a main circulation pipeline is provided on one side of the mixing tank. The main circulation pipeline is equipped with a power source for the circulation mechanism. The end of the main circulation pipeline is connected to an external circulation pipeline and an internal circulation pipeline. Both the external circulation pipeline and the internal circulation pipeline are equipped with regulating valves. The main circulation pipeline integrates the power source for the circulation mechanism, providing stable pressure for the internal and external circulation to ensure the flow efficiency of high-viscosity mud. At the same time, the corresponding regulating valves can be opened or closed as needed to realize the opening and closing of the external circulation pipeline and the internal circulation pipeline.

[0007] Preferably, the mixing tank is equipped with a feeding and discharging mechanism at the top. The feeding and discharging mechanism is integrated into the top of the mixing tank, which simplifies the structure, reduces material transfer links, and reduces the risk of pollution.

[0008] Preferably, the feeding and discharging mechanism includes a cover body disposed at the upper end of the mixing tank. The cover body is provided with a mud inlet, a powder inlet, an aggregate inlet, and a water inlet. The independent inlets (mud, powder, aggregate, and water) enable the sequential input of raw materials, avoid premixing and clumping, and improve the mixing quality.

[0009] Preferably, the upper surface of the cover is provided with a grid-shaped reinforcing rib, and a stirring mechanism is provided in the middle of the reinforcing rib. The grid-shaped reinforcing rib enhances the cover's resistance to deformation and is especially suitable for the vibration load of the stirring mechanism.

[0010] Preferably, a first screen is provided below the mud-dissolving blade, which is horizontally or approximately horizontally arranged, and a second screen is provided on the vibrating screen, which is vertically or approximately vertically arranged. The first screen, the second screen and the vibrating screen shell together enclose the mud-dissolving cavity to prevent mud splashing and ensure a clean working environment.

[0011] Preferably, a third screen is provided below the first and second screens, and below that is the discharge pipe of the vibrating screen. The third screen performs final filtration of the slurry after screening by the first and second screens to ensure that the discharge particle size meets the standard and reduce the risk of pipe blockage.

[0012] Preferably, the external circulation pipeline is connected to at least two flushing pipelines, each flushing pipeline is equipped with multiple nozzles, and at least one flushing pipeline is provided on the left and right sides of the second screen. The multiple flushing pipelines cover both sides of the second screen and, together with the multiple nozzles, form a mesh-like water flow to thoroughly remove residual mud and sludge from the screen holes.

[0013] Preferably, the vibrating screen includes a vibrating motor, a rotating shaft mounted on the vibrating motor, and an eccentric block located on the rotating shaft. The eccentric block has an uneven texture, and an eccentric shell is provided on the rotating shaft and connected to the vibrating screen housing. The rotation of the eccentric block generates an eccentric force that causes the vibrating screen housing to vibrate through the rotating shaft and the eccentric shell. The eccentric block amplifies the vibration force through the rotating shaft and the eccentric shell, thereby increasing the screen shaking intensity.

[0014] Preferably, a buffer mechanism is provided between the vibrating screen assembly and the frame. The buffer mechanism absorbs the vibration energy transmitted by the vibrating screen, prevents structural fatigue or bolt loosening caused by frame resonance, reduces working noise, and improves equipment life and operating comfort.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model provides a mixing device for producing fluidized solidified soil to replace shield tunnel synchronous mortar, including a frame and a vibrating screen assembly and a mixing tank assembly set on the frame. A density measuring instrument is provided on the inner circulation pipeline, and a weighing mechanism is provided at the bottom of the mixing tank. The density of the mud is monitored in real time by the density measuring instrument on the inner circulation pipeline, and the weight data is fed back by the weighing mechanism at the bottom of the mixing tank to realize dynamic density adjustment.

[0017] 2. The vibrating screen assembly integrates a mud-breaking blade and a flushing pipeline to break up mud blocks and flush the screen, preventing blockage and ensuring continuous operation. At the same time, the external circulation pipeline leads the mud and water from the mixing tank to the vibrating screen flushing pipeline, realizing the reuse of wastewater / slurry. The mixing end is located at the bottom of the mixing tank to prevent sedimentation and improve the uniformity of the mixture. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the stirring device.

[0019] Figure 2 This is a schematic diagram of the structure of a vibrating screen assembly.

[0020] Figure 3 for Figure 2 A magnified view of part A.

[0021] Figure 4 This is a schematic diagram of the structure of a vibrating screen.

[0022] Figure 5 This is a cross-sectional view of the vibrating screen assembly.

[0023] Figure 6 This is a schematic diagram of the mixing tank assembly.

[0024] Figure 7 This is a cross-sectional view of the mixing tank assembly.

[0025] In the diagram, the components are: vibrating screen assembly 1, vibrating screen shell 1-1, mud-dissolving blade 1-2, vibrating screen 1-3, vibrating motor 1-3-1, rotating shaft 1-3-2, eccentric block 1-3-3, eccentric shell 1-3-4, flushing pipe 1-4, nozzle 1-4-1, vibrating screen discharge pipe 1-5, first screen 1-6, second screen 1-7, third screen 1-8, mixing tank assembly 2, mixing tank 2-1, external circulation pipe 2-2, internal circulation pipe 2-3, mixing mechanism 2-4, mixing end 2-4-1, density measuring instrument 2-5, main circulation pipe 2-6, power source for circulation mechanism 2-7, weighing mechanism 3, inlet / outlet mechanism 4, cover 4-1, mud inlet 4-2, powder inlet 4-3, aggregate inlet 4-4, water inlet 4-5, reinforcing rib 4-6, and buffer mechanism 5. Detailed Implementation

[0026] To facilitate understanding of the technical solution of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1 As shown, a mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar includes a frame and a vibrating screen assembly 1 and a mixing tank assembly 2 mounted on the frame.

[0029] like Figure 2-5 As shown, the vibrating screen assembly 1 includes a vibrating screen housing 1-1, a mud-removing blade 1-2 disposed within the vibrating screen housing 1-1, a vibrating screen 1-3, a flushing pipe 1-4, and a vibrating screen discharge pipe 1-5;

[0030] like Figure 6-7 As shown, the mixing tank assembly 2 includes a mixing tank 2-1, an external circulation pipe 2-2, an internal circulation pipe 2-3, and a mixing mechanism 2-4 mounted on the mixing tank 2-1. One end of the external circulation pipe 2-2 is connected to the mixing tank 2-1, and the other end is connected to the flushing pipe 1-4. A density measuring instrument 2-5 is mounted on the internal circulation pipe 2-3. The mixing end 2-4-1 of the mixing mechanism 2-4 is located at the bottom of the mixing tank 2-1. A weighing mechanism 3 is mounted at the bottom of the mixing tank 2-1. The density of the mud is monitored in real time by the density measuring instrument 2-5 on the internal circulation pipe 2-3, and the weight data is fed back by the weighing mechanism 3 at the bottom of the mixing tank to achieve dynamic density adjustment.

[0031] A main circulation pipe 2-6 is provided on one side of the mixing tank 2-1. A circulation mechanism power source 2-7 is provided on the main circulation pipe 2-6. The end of the main circulation pipe 2-6 is connected to the external circulation pipe 2-2 and the internal circulation pipe 2-3. Both the external circulation pipe 2-2 and the internal circulation pipe 2-3 are equipped with regulating valves. The main circulation pipe 2-6 integrates the circulation mechanism power source 2-7 to provide stable pressure for the internal and external circulation, ensuring the flow efficiency of high-viscosity mud. At the same time, the corresponding regulating valves can be opened or closed as needed to realize the opening and closing of the external circulation pipe 2-2 and the internal circulation pipe 2-3.

[0032] The mixing tank 2-1 is equipped with a feeding and discharging mechanism 4 at the upper end. The feeding and discharging mechanism 4 is integrated into the upper end of the mixing tank, which simplifies the structure, reduces material transfer links, and reduces the risk of pollution.

[0033] The feeding and discharging mechanism 4 includes a cover 4-1 located at the upper end of the mixing tank 2-1. The cover 4-1 is provided with a mud inlet 4-2, a powder inlet 4-3, an aggregate inlet 4-4, and a water inlet 4-5. The independent inlets allow for the sequential input of mud, powder, aggregate, and water, avoiding premixing and clumping, and improving the mixing quality.

[0034] The upper surface of the cover 4-1 is provided with a grid-shaped reinforcing rib 4-6, and the middle of the reinforcing rib 4-6 is provided with a stirring mechanism 2-4. The grid-shaped reinforcing rib 4-6 enhances the deformation resistance of the cover and is especially suitable for the vibration load of the stirring mechanism 2-4.

[0035] like Figure 2-5 As shown, the mud-dissolving blade 1-2 includes a mud-dissolving motor 1-2-1, a mud-dissolving shaft 1-2-2, and blades 1-2-3. The blades 1-2-3 are mounted on the mud-dissolving shaft 1-2-2. One end of the mud-dissolving shaft 1-2-2 has a driven wheel, and one end of the mud-dissolving motor 1-2-1 is a driving wheel. A drive belt is fitted around the driving wheel and the driven wheel. The operation of the mud-dissolving motor 1-2-1 causes the driving wheel to rotate, which in turn drives the driven wheel 1-2-4 to rotate via the drive belt, thereby causing the mud-dissolving shaft 1-2-2 to rotate. In practical use, the number of mud-dissolving shafts 1-2-2 and blades 1-2-3 can be set as needed. Alternatively, the direction of rotation of the mud-dissolving shafts 1-2-2 can be selected; for example, the mud-dissolving shafts 1-2-2 can rotate in the same direction, or adjacent mud-dissolving shafts 1-2-2 can rotate in opposite directions.

[0036] Below the mud-dissolving blade 1-2, there is a first screen 1-6 that is horizontally or nearly horizontally arranged, and on the vibrating screen 1-3, there is a second screen 1-7 that is vertically or nearly vertically arranged. The first screen 1-6, the second screen 1-7 and the vibrating screen shell 1-1 enclose the mud-dissolving cavity to prevent mud splashing and ensure a clean working environment.

[0037] A third screen 1-8 is provided below the first screen 1-6 and the second screen 1-7, and below it is the discharge pipe 1-5 of the vibrating screen. The third screen 1-8 performs final filtration on the mud after screening by the first screen 1-6 and the second screen 1-7 to ensure that the discharge particle size meets the standard and reduce the risk of pipe blockage.

[0038] At least two flushing pipes 1-4 are connected to the external circulation pipe 2-2. Each flushing pipe 1-4 is equipped with multiple nozzles 1-4-1. At least one flushing pipe 1-4 is provided on the left and right sides of the second screen 1-7. The multiple flushing pipes 1-4 cover both sides of the second screen 1-7 and, together with the multiple nozzles 1-4-1, form a mesh-like water flow to thoroughly remove residual mud and sludge from the screen holes.

[0039] The vibrating screen 1-3 includes a vibrating motor 1-3-1, a rotating shaft 1-3-2 mounted on the vibrating motor 1-3-1, and an eccentric block 1-3-3 located on the rotating shaft 1-3-2. The uneven texture of the eccentric block 1-3-3 causes its center of gravity to be off-center from the rotational center of gravity. An eccentric housing 1-3-4 connected to the vibrating screen housing 1-1 is mounted on the rotating shaft 1-3-2. The eccentric force generated by the rotation of the eccentric block 1-3-3 causes the vibrating screen housing 1-1 to vibrate through the rotating shaft 1-3-2 and the eccentric housing 1-3-4. The eccentric block 1-3-3 amplifies the vibration force through the rotating shaft 1-3-2 and the eccentric housing 1-3-4, thereby increasing the screen vibration intensity.

[0040] A buffer mechanism 5 is provided between the vibrating screen assembly 1 and the frame. The buffer mechanism 5 absorbs the vibration energy transmitted by the vibrating screen, prevents structural fatigue or bolt loosening caused by frame resonance, reduces working noise, and improves equipment life and operating comfort.

[0041] The above are merely preferred embodiments of this utility model. The scope of protection of this utility model is defined by the scope of the claims. Any improvements and modifications made by those skilled in the art without departing from the spirit and scope of this utility model should also be considered as protection within the scope of this utility model.

Claims

1. A mixing device for producing fluidized solidified soil as a substitute for shield tunneling synchronous mortar, characterized in that, The equipment includes a frame and a vibrating screen assembly (1) and a mixing tank assembly (2) mounted on the frame. The vibrating screen assembly (1) includes a vibrating screen housing (1-1), a mud-removing blade (1-2) and a vibrating screen (1-3) mounted inside the vibrating screen housing (1-1). The mixing tank assembly (2) includes a mixing tank (2-1), a stirring mechanism (2-4) mounted on the mixing tank (2-1), and a density measuring instrument (2-5). The stirring end (2-4-1) of the stirring mechanism (2-4) is located at the bottom of the mixing tank (2-1). A weighing mechanism (3) is provided at the bottom of the mixing tank (2-1).

2. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 1, characterized in that, The vibrating screen assembly (1) also includes a flushing pipe (1-4) and a vibrating screen discharge pipe (1-5); the mixing tank assembly (2) also includes an external circulation pipe (2-2) and an internal circulation pipe (2-3). One end of the external circulation pipe (2-2) is connected to the mixing tank (2-1), and the other end is connected to the flushing pipe (1-4). A density measuring instrument (2-5) is provided on the internal circulation pipe (2-3). A power source (2-7) for the circulation mechanism is provided on one side of the mixing tank (2-1). A regulating valve is provided on both the external circulation pipe (2-2) and the internal circulation pipe (2-3).

3. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 1, characterized in that, The mixing tank (2-1) is equipped with a feeding and discharging mechanism (4) at the top.

4. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 3, characterized in that, The feeding and discharging mechanism (4) includes a cover (4-1) located at the upper end of the mixing tank (2-1), and the cover (4-1) is provided with a plurality of feeding ports.

5. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 4, characterized in that, The upper surface of the cover (4-1) is provided with a grid-shaped reinforcing rib (4-6), and a stirring mechanism (2-4) is provided in the middle of the reinforcing rib (4-6).

6. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 2, characterized in that, Below the mud-dissolving blade (1-2) is a first screen (1-6) that is horizontally or approximately horizontally arranged, and on the vibrating screen (1-3) is a second screen (1-7) that is vertically or approximately vertically arranged. The first screen (1-6), the second screen (1-7), and the vibrating screen housing (1-1) together form a mud-dissolving cavity.

7. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 6, characterized in that, A third screen (1-8) is provided below the first screen (1-6) and the second screen (1-7), and below that is the discharge pipe (1-5) of the vibrating screen.

8. The mixing device for producing fluidized solidified soil to replace shield tunneling synchronous mortar according to claim 6, characterized in that, At least two flushing pipes (1-4) are connected to the external circulation pipe (2-2), each flushing pipe (1-4) is provided with multiple nozzles (1-4-1), and at least one flushing pipe (1-4) is provided on the left and right sides of the second screen (1-7).

9. The mixing device for producing fluidized solidified soil as a substitute for shield tunneling synchronous mortar according to claim 1, characterized in that, The vibrating screen (1-3) includes a vibrating motor (1-3-1), a rotating shaft (1-3-2) mounted on the vibrating motor (1-3-1), and an eccentric block (1-3-3) located on the rotating shaft (1-3-2). The eccentric block (1-3-3) has an uneven texture, and the rotating shaft (1-3-2) is provided with an eccentric shell (1-3-4) connected to the vibrating screen housing (1-1). The eccentric force generated by the rotation of the eccentric block (1-3-3) causes the vibrating screen housing (1-1) to vibrate through the rotating shaft (1-3-2) and the eccentric shell (1-3-4).

10. The mixing device for producing fluidized solidified soil as a substitute for shield tunneling synchronous mortar according to claim 1, characterized in that, A buffer mechanism (5) is provided between the vibrating screen assembly (1) and the frame.

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