Rapid water absorption and continuous stirring device for field shield muck

Abstract

The utility model discloses a rapid water absorption and continuous stirring device for field shield muck, and relates to the technical field of shield muck treatment. In order to solve the problems that an existing filter press is easy to block, low in filter pressing efficiency and not in place in moisture filter pressing, the following technical scheme is provided: the filter press comprises a rack, a feeding assembly, a stirring assembly and a water absorbent spraying assembly, the feeding assembly is arranged at the top of the rack, the water absorbent spraying assembly is arranged on one side of the rack, and the stirring assembly is arranged on the other side of the rack; the outlet end of the feeding assembly and the outlet end of the water absorbent spraying assembly correspond to the inlet end of the stirring assembly; a humidity sensor is arranged in the stirring assembly; the feeding assembly, the stirring assembly, the water absorbent spraying assembly and the humidity sensor are all in communication connection with the control system. The stirring device has the advantages of compact structure, simplicity and convenience in operation, good stirring effect, high adaptability, environment friendliness, energy conservation and the like. Continuous treatment and efficient utilization of the shield muck can be achieved, and a new solution is provided for muck treatment in underground engineering construction.

Description

Technical Field

[0001] The utility model relates to the technical field of shield slag treatment, in particular to an on-site shield slag rapid water absorption and continuous stirring device. Background Art

[0002] As one of the key technologies for urban subway tunnel construction, shield tunneling will inevitably generate a large amount of waste soil during the construction process. In recent years, the large amount of waste soil generated by shield tunneling construction has brought many challenges to the urban environment. These challenges include the discharge and transportation of waste soil, and the dispersion of mud in tunnels and urban traffic arteries, all of which have an impact on the construction environment and urban appearance. In addition, the treatment of waste soil incurs high cleaning costs, and landfill treatment not only occupies a large amount of land resources, but also may cause landslide disaster risks on the slopes of the pile.

[0003] In recent years, some cities at home and abroad have begun to treat shield slag, with the goal of drying the slag, achieving normal abandonment or backfill reuse, while reducing treatment costs and improving environmental benefits. The earth pressure balance shield slag solidification treatment device currently widely used mainly relies on the mud-water separation system. This method first dilutes the slag with water, then separates the large-size particles and sand through a vibrating screen, and the remaining mud is filtered into a cake using a filter press. In the shield slag, if the content of pebbles or sand is high and the fine particles are low, the separation effect of the vibrating screen is more significant, and the remaining mud is processed by a filter press. This equipment and construction process are quite mature, and the treatment method is simple and effective. However, when the shield mudstone slag contains a large number of fine particles (less than 0.075mm), the existing filter press has a low filtration efficiency, and a large number of filter presses need to be deployed to complete the task, which not only increases the equipment footprint, but also significantly increases the construction cost. Most other treatment devices are based on the mechanism of mud-water separation through filter pressing, which has problems such as easy blockage, low filter pressing efficiency, and inadequate water filtration. Utility Model Content

[0004] The utility model aims to provide a rapid water absorption and continuous stirring device for shield slag on site, so as to solve the problems of easy clogging, low filtration efficiency and inadequate water filtration in the existing filter press.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A shield slag rapid water absorption and continuous stirring device on site comprises: a frame, a feeding assembly, a stirring assembly and a water absorbent spraying assembly, wherein the feeding assembly is arranged on the top of the frame, the stirring assembly is arranged below the feeding assembly, the water absorbent spraying assembly is arranged on one side of the frame, and the outlet ends of the feeding assembly and the water absorbent spraying assembly correspond to the inlet end of the stirring assembly; a humidity sensor is arranged inside the stirring assembly;

[0007] The feeding component, the stirring component, the water absorbent spraying component and the humidity sensor are all connected to the control system for communication.

[0008] Preferably, the feed assembly comprises a feed hopper box body slidably arranged on the frame, and a feed hopper translation assembly for driving the feed hopper box body to move laterally is provided at the side end of the feed hopper box body.

[0009] Preferably, a feed hopper bottom plate is provided at the bottom of the feed hopper box body, a hydraulic opening and closing mechanism is provided on the feed hopper bottom plate, and the hydraulic opening and closing mechanism is communicatively connected with the control system.

[0010] Preferably, the feed hopper translation assembly includes a first drive motor arranged at the side end of the frame and a first transmission assembly connected to the output end of the first drive motor. The side end of the feed hopper box is connected to the first transmission assembly, and the first drive motor is communicatively connected to the control system.

[0011] Preferably, the stirring assembly comprises a stirring chamber, a stirring shaft is disposed transversely inside the stirring chamber, and a plurality of stirring blades are disposed on the stirring shaft.

[0012] Preferably, a second transmission assembly is provided at the side end of the stirring bin, the stirring shaft is connected to a second drive motor via the second transmission assembly, and the second drive motor is communicatively connected to the control system.

[0013] Preferably, a hydraulic support rod is provided at the rear end of the mixing bin.

[0014] The utility model has the following beneficial effects:

[0015] Compact and reasonable structure: All components of the utility model are compactly installed on the frame, occupying a small area, which is convenient for on-site operation and maintenance. At the same time, the design of the frame also fully considers stability and durability, ensuring the reliability of the entire device during long-term operation.

[0016] Easy operation and high degree of automation: The control system of this utility model adopts advanced control technology to achieve precise control of each component. The operator can control and monitor the entire device through a simple operation interface. At the same time, the control system also has automatic diagnosis and alarm functions, which can detect and handle faults in time, improving the safety and reliability of the device.

[0017] Good stirring effect and strong adaptability: The stirring assembly of the utility model adopts advanced stirring technology and structural design to ensure the full mixing of the slag and the water absorbent during the stirring process. At the same time, the device can also be adaptively adjusted according to different slag types and water contents to meet the needs of different users.

[0018] Environmental protection and energy saving: The water absorbent spraying assembly of the utility model adopts quantitative spraying technology, which can ensure the accurate spraying and full utilization of the water absorbent. At the same time, the noise and vibration generated by the device during operation are also small, and the impact on the surrounding environment is small. In addition, by reducing the water content of the slag, the energy consumption and environmental pollution in the subsequent processing and utilization process can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model of the on-site shield slag rapid water absorption and continuous stirring device;

[0020] Figure 2 It is a front view of the utility model on-site shield slag rapid water absorption and continuous stirring device;

[0021] Figure 3 It is a top view of the on-site shield slag rapid water absorption and continuous stirring device of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the feeding assembly of the on-site shield slag rapid water absorption and continuous stirring device of the utility model;

[0023] Figure 5 It is a schematic diagram of the positions of the feed hopper support shaft and the feed hopper support beam of the mixing assembly of the on-site shield slag rapid water absorption continuous mixing device of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the stirring assembly of the on-site shield slag rapid water absorption continuous stirring device of the utility model;

[0025] Figure 7 It is a three-dimensional schematic diagram of the stirring shaft and stirring blades of the on-site shield slag rapid water absorption and continuous stirring device of the utility model;

[0026] Figures 1 to 7 The reference numerals shown in the figure respectively represent: frame 1, ordinary beam column 11, feed hopper support beam 12, stirring assembly bottom plate 13, feed assembly 2, feed hopper box body 21, feed hopper bottom plate 22, feed hopper support shaft 23, feed hopper translation assembly 24, first drive motor 241, first transmission assembly 242, stirring assembly 3, stirring bin 31, second drive motor 32, stirring shaft 33, stirring blade 34, hydraulic support rod 35, second transmission assembly 36, water absorbent spraying assembly 4. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] Please refer to Figure 1-2 In underground engineering construction, the shield method is widely used because of its high efficiency and safety. However, the slag produced during the shield construction process has a high water content. Direct discharge not only occupies a large amount of land resources, but also may cause environmental pollution. In order to solve this problem, this embodiment proposes an on-site shield slag rapid water absorption and continuous stirring device, which aims to achieve rapid mixing of shield slag and water absorbent through a continuous and efficient stirring process, reduce the water content of the slag, and facilitate subsequent treatment and utilization. The following is a detailed description of the specific implementation method of the device:

[0029] The on-site shield slag rapid water absorption and continuous stirring device of this embodiment is mainly composed of four parts: a frame 1, a feeding component 2, a stirring component 3, and a water absorbent spraying component 4. These components work together under the support of the frame 1 to complete the task of rapid water absorption and stirring of shield slag.

[0030] The frame 1 is the supporting structure of the entire device, which is composed of ordinary beams 11, feed hopper support beams 12 and mixing assembly bottom plate 13. The design of the frame 1 not only ensures the stability of the device, but also facilitates the installation and commissioning of each component. The two top longitudinal beams of the frame 1 are the feed hopper support beams 12, and their main function is to support the feed assembly 2 so that it can move smoothly laterally. The load-bearing plate at the bottom of the mixing device is the mixing assembly bottom plate 13, which bears the weight of the mixing assembly 3 and the slag inside it. The other beams are all ordinary beams 11, which constitute the main structure of the frame 1 and ensure the stability and durability of the entire device.

[0031] Reference Figure 1-5 The feed assembly 2 is a key part of the device for realizing continuous feeding of shield excavation soil. It mainly includes a feed hopper box 21, a feed hopper bottom plate 22 and a feed hopper translation assembly 24. The feed hopper box 21 is a container with a certain volume, which is used to temporarily store shield excavation soil. In order to facilitate the movement of the feed hopper box 21, it is installed in the groove on the feed hopper support beam 12 through the feed hopper support shafts 23 on both sides. In this way, when the feed hopper box 21 needs to be moved, it can be achieved by simply using the feed hopper translation assembly 24.

[0032] The feed hopper translation assembly 24 is composed of a first drive motor 241 and a first transmission assembly 242. The first transmission assembly 242 includes a first gear, a first transmission belt and a gear shaft. The first drive motor 241 is installed at the side end of the frame 1, and it drives the gear shaft set at the side end of the feed hopper box 21 through the first gear and the first transmission belt. When the first drive motor 241 is started, it drives the gear shaft on the feed hopper box 21 to move horizontally on the feed hopper support beam 12 through the first gear and the first transmission belt. This design enables the feed hopper box 21 to flexibly switch between the left and right mixing chambers, realizing the continuous feeding of shield slag.

[0033] A feed hopper bottom plate 22 is provided at the bottom of the feed hopper housing 21, which is a plate-like structure that can be opened and closed. When the feed hopper housing 21 stores shield slag, the feed hopper bottom plate 22 is in a closed state to prevent the slag from leaking out from the bottom. When the slag needs to be filled into the mixing assembly, the feed hopper bottom plate 22 will open so that the slag can fall smoothly into the mixing bin below. In order to control the opening and closing of the feed hopper bottom plate 22, the present embodiment adopts a hydraulic opening and closing mechanism 24. The hydraulic opening and closing mechanism 24 can achieve fast and accurate control of the feed hopper bottom plate 22 through the action of the hydraulic system. At the same time, the hydraulic opening and closing mechanism 24 is also connected to the control system in communication so as to act according to the instructions of the control system. The hydraulic opening and closing mechanism 24 may include components such as a hydraulic push rod, a connecting plate, a screw, a limit seat and a support plate.

[0034] Reference Figure 6-7 The stirring assembly 3 is the core part of the device for realizing rapid stirring of shield slag and water absorbent. It mainly includes a stirring chamber 31, a stirring shaft 33, a stirring blade 34 and a second transmission assembly 36. The stirring chamber 31 is a crescent-shaped open container with a certain volume, which is used to store and stir shield slag and water absorbent, and is also convenient for rotation and pouring. The internal shape and size of the stirring chamber 31 are reasonably designed to ensure that the slag and water absorbent can be fully mixed during the stirring process.

[0035] The stirring shaft 33 is the main power component of the stirring assembly 3, and it is horizontally arranged inside the stirring chamber 31. A plurality of stirring blades 34 are arranged on the stirring shaft 33, and these stirring blades 34 are installed on the stirring shaft 33 at certain intervals and angles. When the stirring shaft 33 rotates, the stirring blades 34 will rotate accordingly, thereby mixing the slag and water absorbent in the stirring chamber 31. In order to drive the rotation of the stirring shaft 33, the second transmission assembly 36 is adopted in this embodiment. The second transmission assembly 36 is composed of a second drive motor 32, a second gear and a second transmission belt. The second drive motor 32 is installed at the rear end of the frame 1, and it is connected to the second transmission belt through the second gear, and the second transmission belt is connected to the stirring shaft 33. When the second drive motor 32 is started, it will drive the gear at the input end of the stirring shaft 33 to rotate through the second gear and the second transmission belt, thereby driving the stirring shaft 33 to perform a rotating stirring operation.

[0036] In order to ensure the support and flipping function of the mixing chamber 31 after the mixing process, the present embodiment also provides a hydraulic support rod 35 at the rear end of the mixing chamber 31. The hydraulic support rod 35 can support and adjust the mixing chamber 31 through the action of the hydraulic system. When the slag in the mixing chamber 31 needs to be poured out, the hydraulic support rod 35 will start and lift up the mixing chamber 31, so that the rear end of the mixing chamber 31 is lifted to a certain angle, thereby facilitating the pouring out of the slag. At the same time, the hydraulic support rod 35 is also connected to the control system for communication so as to act according to the instructions of the control system. Specifically, the hydraulic support rod 35 is equipped with sensors (such as position sensors, pressure sensors, etc.), which convert the detected physical quantities into analog electrical signals and transmit them to the control system through wires. The position sensors and pressure sensors collect the position and pressure information of the hydraulic support rod in real time. According to the preset control algorithm and logic, the control system decides how to adjust the position or pressure of the hydraulic support rod 35. The control system sends a control signal to the solenoid valve on the hydraulic support rod 35, and the solenoid valve switches the working state according to the signal. The solenoid valve controls the flow direction and flow rate of the hydraulic oil in the hydraulic support rod 35, thereby driving the hydraulic support rod 35 to rise and fall.

[0037] The water absorbent spraying assembly 4 is a key part of the device for realizing the quantitative spraying of the water absorbent. It mainly includes a spraying device and a control unit. The spraying device is arranged on one side of the frame 1, and its outlet end corresponds to the inlet end of the stirring assembly 3. When the mixing chamber 31 is filled with slag, the spraying device will spray the water absorbent into the mixing chamber 31 according to the preset spraying amount. In order to ensure the accuracy of the spraying amount, the quantitative spraying technology is adopted in this embodiment. The control unit is responsible for controlling the spraying amount and spraying time of the spraying device to ensure that the water absorbent can be evenly sprayed on the slag in the mixing chamber 31. At the same time, the control unit is also connected to the control system in communication so as to perform the spraying operation according to the instructions of the control system. The spraying device includes components such as a liquid storage tank, a pump body, a motor, a pipeline, a spray head, a flow control valve, and a sensor.

[0038] In terms of the control system, this embodiment can be controlled by a central processing unit or a microcontroller to achieve precise control of the feeding component 2, the stirring component 3, the water absorbent spraying component 4 and the humidity sensor 5. The control system receives feedback signals from each component and adjusts and controls each component in real time according to preset programs and parameters. This design not only improves the working efficiency of the device, but also ensures that the slag and the water absorbent are fully mixed during the stirring process.

[0039] In order to monitor the humidity change of the slag in the mixing bin 31, the present embodiment further provides a humidity sensor 5 inside the mixing assembly 3. The humidity sensor 5 can monitor the humidity of the slag in the mixing bin 31 in real time and feed back the monitoring result to the control system. When the humidity reaches the preset value, the control system will issue an instruction in time to stop spraying the water absorbent and adjust the mixing speed to ensure that the slag after mixing reaches the expected humidity requirement.

[0040] The following is a detailed description of the specific workflow of this embodiment:

[0041] First, shield slag is continuously input into the feed hopper box 21 through a conveyor belt or a pressure pump. In order to achieve continuous feeding, this embodiment adopts a double-bin design, that is, the feed hopper box 21 is divided into two left and right chambers, and the mixing chamber 31 is also divided into two left and right chambers. When the left chamber is filled with slag, the feed hopper translation assembly 24 will drive the feed hopper box 21 to move to the left, so that the discharge port of the left chamber is located directly above the left mixing chamber 31. At this time, the control system will issue an instruction to make the hydraulic opening and closing mechanism 24 open the feed hopper bottom plate 22 of the left chamber, and the slag will fall into the mixing chamber 31 below. At the same time, the conveyor belt or pressure pump continues to input the slag into the right chamber to prepare for the next feeding.

[0042] When the soil in the left mixing chamber 31 reaches a preset amount, the control system will issue a command to start the second drive motor 32. The second drive motor 32 drives the mixing shaft 33 to rotate through the second transmission assembly 36, and the mixing blades 34 rotate accordingly to mix the soil in the mixing chamber 31. At this time, the water absorbent spraying assembly 4 will spray the water absorbent evenly on the soil in the mixing chamber 31 according to the preset spraying amount and spraying time.

[0043] During the stirring process, the humidity sensor 5 will monitor the humidity changes of the slag in the stirring chamber 31 in real time, and feed back the monitoring results to the control system. When the humidity reaches the preset value, the control system will issue instructions in time to stop spraying the water absorbent and adjust the stirring speed. At the same time, in order to avoid the influence of the heat generated during the stirring process on the stirring effect, the control system will also dynamically adjust the stirring speed and stirring time according to the real-time monitored humidity value.

[0044] When the mixing is completed, the control system will issue a command to start the hydraulic support rod 35. The hydraulic support rod 35, through the action of the hydraulic system, lifts the rear end of the mixing chamber 31 to a certain angle, so that the slag in the mixing chamber 31 can be poured out smoothly. At this time, the operator can transport the mixed slag to a designated location for subsequent processing or utilization.

[0045] In order to further improve the working efficiency and continuity of the device, this embodiment also adopts the mode of alternating the working of the left and right mixing chambers 31. That is, when the left mixing chamber 31 is mixing, the right mixing chamber 31 can perform the filling operation; when the left mixing chamber 31 is performing the discharging operation after the mixing is completed, the right mixing chamber 31 starts the mixing operation. This design not only improves the working efficiency of the device, but also ensures the continuous processing of shield slag.

[0046] In summary, the on-site shield slag rapid water absorption and continuous stirring device of this embodiment has the advantages of compact structure, simple operation, good stirring effect, strong adaptability, environmental protection and energy saving, etc. It can realize the continuous treatment and efficient utilization of shield slag, and provides a new solution for slag treatment in underground engineering construction.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for rapid water absorption and continuous stirring of on-site shield slag, characterized in that: include: A frame (1), a feeding assembly (2), a stirring assembly (3) and a water absorbent spraying assembly (4), wherein the feeding assembly (2) is arranged on the top of the frame (1), the stirring assembly (3) is arranged below the feeding assembly (2), the water absorbent spraying assembly (4) is arranged on one side of the frame (1), and the outlet ends of the feeding assembly (2) and the water absorbent spraying assembly (4) correspond to the inlet end of the stirring assembly (3); a humidity sensor is arranged inside the stirring assembly (3); The feeding component (2), the stirring component (3), the water absorbent spraying component (4) and the humidity sensor are all connected to the control system for communication; The feed assembly (2) comprises a feed hopper box (21) slidably arranged on the frame (1), and a feed hopper translation assembly (24) is provided at a side end of the feed hopper box (21) for driving the feed hopper box (21) to move horizontally; the feed hopper translation assembly (24) comprises a first drive motor (241) arranged at the side end of the frame (1) and a first transmission assembly (242) connected to an output end of the first drive motor (241), the side end of the feed hopper box (21) is connected to the first transmission assembly (242), and the first drive motor (241) is communicatively connected to a control system; the first transmission assembly (242) comprises a first gear, a first transmission belt and a gear shaft, and the first drive motor (241) is installed at the side end of the frame (1), and drives the gear shaft arranged at the side end of the feed hopper box (21) through the first gear and the first transmission belt.

2. The on-site shield slag rapid water absorption and continuous stirring device according to claim 1 is characterized in that: A feed hopper bottom plate (22) is provided at the bottom of the feed hopper box body (21), and a hydraulic opening and closing mechanism is provided on the feed hopper bottom plate (22), and the hydraulic opening and closing mechanism is communicatively connected with a control system.

3. The on-site shield slag rapid water absorption and continuous stirring device according to claim 1 is characterized in that: The stirring assembly (3) comprises a stirring chamber (31), wherein a stirring shaft (33) arranged transversely is provided inside the stirring chamber (31), and a plurality of stirring blades (34) are provided on the stirring shaft (33).

4. The on-site shield slag rapid water absorption and continuous stirring device according to claim 3 is characterized in that: A second transmission assembly (36) is provided at a side end of the stirring chamber (31); the stirring shaft (33) is connected to a second drive motor (32) via the second transmission assembly (36); and the second drive motor (32) is communicatively connected to a control system.

5. The on-site shield slag rapid water absorption and continuous stirring device according to claim 3 or 4, characterized in that: A hydraulic support rod (35) is provided at the rear end of the mixing bin (31).

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