Slurry circulation device of slurry balance shield
By designing a mud circulation device that automatically adjusts the loading volume and viscosity, the problem that existing devices cannot adapt to changes in pressure and viscosity is solved, and the safety and efficiency of shield construction are improved.
Patent Information
- Application Number
- CN202422301344.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing mud circulation device cannot automatically adjust the loading volume according to the internal pressure changes of the mud silo, and cannot effectively control the mud viscosity, affecting construction safety and efficiency.
A mud circulation device including slurry inlet assembly, inspection assembly, slurry discharge assembly, circulation assembly and liquid replenishment assembly was designed. The pressure and mud viscosity of the mud slurry are monitored in real time through pressure sensors and viscosity sensors, and the loading volume and viscosity are automatically adjusted by the controller, and the pressure holding device is combined with the air pressure and pressure holding device to stabilize the pressure of the mud slurry.
The loading volume and mud viscosity are automatically adjusted according to the pressure of the mud silo silo, which improves the safety and efficiency of shield construction and ensures the continuity and quality of construction.
Smart Images
Figure CN223203063U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical direction of slurry shield, and specifically relates to a slurry circulation device for a slurry shield. Background Art
[0002] During slurry shield tunneling, the slurry circulation system plays a crucial role. It transports slurry to the slurry tank to maintain the stability of the excavation face and removes slurry carrying excavated debris through a circulation system, enabling continuous tunneling by the shield machine. However, existing slurry circulation systems generally suffer from simple structures and limited functionality, failing to meet the complex and ever-changing construction requirements.
[0003] Specifically, existing slurry circulation systems are unable to automatically adjust the feed rate based on changes in the internal slurry bunker pressure. In actual construction, the internal slurry bunker pressure fluctuates with increasing excavation depth, changing geological conditions, and fluctuations in the slurry circulation state. If the feed rate cannot automatically adjust to these changes, the internal slurry bunker pressure will become unstable, affecting the safety and progress of shield construction.
[0004] More critically, existing mud circulation systems also have shortcomings in controlling mud viscosity. Mud viscosity directly affects its slag-carrying capacity and circulation efficiency. If the viscosity is too high, the mud will have poor fluidity and reduced slag-carrying capacity; if the viscosity is too low, it may cause excessive mud loss, increasing construction costs. However, existing circulation systems often fail to effectively adjust the viscosity of the circulated mud, which affects construction results. Utility Model Content
[0005] The purpose of the utility model is to propose a mud circulation device for a mud-water balance shield in view of the existing technology, so as to solve the problems raised in the above background technology.
[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a slurry circulation device for a slurry balance shield, comprising a slurry feed component, a detection and control component, a slurry discharge component, a circulation component and a fluid replenishment component, wherein the slurry feed component, the fluid replenishment component and the slurry discharge component are sequentially arranged inside the slurry balance shield; the detection and control component is arranged on the surface of the slurry feed component; one end of the slurry feed component, the detection and control component and the slurry discharge component respectively pass through the interior of the slurry bin in the slurry balance shield; the circulation component is arranged between the slurry feed component and the slurry discharge component, and is respectively connected to the interior of the slurry feed component and the interior of the slurry discharge component; one end of the fluid replenishment component is connected to one end of the circulation component; the detection and control component is respectively connected to the slurry feed component, the slurry discharge component, the circulation component and the fluid replenishment component.
[0007] The utility model provides a mud circulation device for a slurry balance shield, which can automatically adjust the feeding amount and the viscosity of the circulated mud according to the internal pressure of the mud and water bin, effectively improving the shield construction efficiency and ensuring construction safety.
[0008] In addition, the slurry circulation device of the slurry shield proposed in the application may also have the following additional technical features:
[0009] Specifically, the slurry feed assembly includes a positioning plate, an inner discharge pipe, an outer discharge pipe, an annular distribution seat, a first solenoid valve, a slurry feed branch pipe, a slurry feed main pipe and a first pump body, the positioning plate is fixedly connected to the outer surface of the air pressure bin in the slurry balance shield; the inspection and control assembly, the inner discharge pipe, the outer discharge pipe and the annular distribution seat are arranged in sequence from the inside to the outside on the outer surface of the positioning plate; one end of the inspection and control assembly, one end of the inner discharge pipe and one end of the outer discharge pipe respectively pass through the interior of the slurry feed bin in the slurry balance shield; one end of the inner discharge pipe and one end of the outer discharge pipe are respectively provided with a first solenoid valve on the surface, and are electrically connected to the inspection and control assembly; the inner discharge pipe and the outer discharge pipe are respectively connected to the interior of the annular distribution seat through the slurry feed branch pipe; one end of the slurry feed main pipe is connected to the interior of the annular distribution seat; the first pump body is arranged on the surface of the slurry feed main pipe and is electrically connected to the inspection and control assembly.
[0010] Specifically, the inspection and control component includes a controller, a pressure sensor and a viscosity sensor. The controller is bolted to the outer surface of the positioning plate; the pressure sensor is arranged inside the controller, and one end of the pressure sensor passes through the mud and water tank in the mud and water balance shield; the viscosity sensor is arranged on the surface of the slurry inlet main pipe; the pressure sensor and the viscosity sensor are electrically connected to the controller respectively.
[0011] Specifically, the slurry discharge assembly includes a slurry discharge main pipe, a first diversion pipe, a second pump body and a second solenoid valve. One end of the slurry discharge main pipe passes through the interior of the mud and water tank in the slurry balance shield; the first diversion pipe and the second pump body are arranged on the surface of the slurry discharge main pipe in sequence, and the second solenoid valve is arranged on the surface of the first diversion pipe. The second pump body and the second solenoid valve are electrically connected to the controller respectively; one end of the first diversion pipe is connected to one end of the circulation assembly.
[0012] Specifically, the circulation component includes a circulation pipe, a second diversion pipe, a third pump body and a third solenoid valve. The circulation pipe is arranged between the slurry inlet main pipe and the slurry discharge main pipe. One end of the circulation pipe is connected to the interior of the slurry inlet main pipe, and the other end of the circulation pipe is connected to one end of the first diversion pipe; the second diversion pipe and the third pump body are arranged on the surface of the circulation pipe in sequence; the third solenoid valve is arranged on the surface of the second diversion pipe; the third pump body and the third solenoid valve are electrically connected to the controller respectively; one end of the second diversion pipe is connected to one end of the fluid replenishment component.
[0013] Specifically, the fluid infusion assembly includes a fluid infusion tube and a fourth pump body, one end of the fluid infusion tube is connected to one end of the second shunt tube; the fourth pump body is arranged on the surface of the fluid infusion tube and is electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0015] Figure 1 This is a schematic structural diagram of a slurry circulation device for a slurry shield according to one embodiment of the present invention;
[0016] Figure 2 This is a schematic structural diagram of a slurry inlet assembly in a slurry circulation device of a slurry shield according to one embodiment of the present invention;
[0017] Figure 3 This is a schematic diagram of the structure of a detection and control component in a slurry circulation device of a slurry shield according to one embodiment of the present invention;
[0018] Figure 4 This is a schematic structural diagram of a circulation component in a slurry circulation device of a slurry balance shield according to an embodiment of the present utility model.
[0019] In the figure: 1. Slurry inlet assembly; 11. Positioning plate; 12. Inner discharge pipe; 13. Outer discharge pipe; 14. Annular material distribution seat; 15. First solenoid valve; 16. Slurry inlet branch pipe; 17. Slurry inlet main pipe; 18. First pump body; 2. Inspection and control assembly; 21. Controller; 22. Pressure sensor; 23. Viscosity sensor; 3. Slurry discharge assembly; 31. Slurry discharge main pipe; 32. First diversion pipe; 33. Second pump body; 34. Second solenoid valve; 4. Circulation assembly; 41. Circulation pipeline; 42. Second diversion pipe; 43. Third pump body; 44. Third solenoid valve; 5. Fluid replenishment assembly; 51. Fluid replenishment pipe; 52. Fourth pump body. DETAILED DESCRIPTION
[0020] The following is a non-limiting detailed description of the technical solution of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.
[0021] See also Figure 1-4 The utility model provides a technical solution: a slurry circulation device for a slurry balance shield, comprising a slurry inlet component 1, a detection and control component 2, a slurry discharge component 3, a circulation component 4 and a fluid replenishment component 5.
[0022] Among them, the slurry inlet component 1, the fluid replenishment component 5 and the slurry discharge component 3 are arranged in sequence inside the slurry balance shield, the inspection and control component 2 is arranged on the surface of the slurry inlet component 1, and one end of the slurry inlet component 1, the inspection and control component 2 and the slurry discharge component 3 respectively pass through the mud and water bin in the slurry balance shield, the circulation component 4 is arranged between the slurry inlet component 1 and the slurry discharge component 3, and are respectively connected with the inside of the slurry inlet component 1 and the inside of the slurry discharge component 3, one end of the fluid replenishment component 5 is connected with one end of the circulation component 4, and the inspection and control component 2 is respectively connected with the slurry inlet component 1, the slurry discharge component 3, the circulation component 4 and the fluid replenishment component 5.
[0023] It should be noted that the mud and water bin described in this embodiment is provided with a cutter disc on the outside and an air pressure bin on the inside, and an air pressure maintaining device (not shown in the figure) is provided inside the mud and water balance shield, and is electrically connected to the inspection and control component 2. The air pressure maintaining device is used to adjust the air pressure bin pressure, and transmit the pressure to the mud and water bin through the air pressure bin, and adjust the mud and water bin pressure by adjusting the air pressure bin pressure. The above are all existing technologies, so they will not be repeated here.
[0024] Specifically, the slurry inlet component 1 is used to transport mud into the mud and water bin, the slurry discharge component 3 is used to output the mud that has carried residue inside the mud and water bin, the inspection and control component 2 is used to control the operation of each electrical component, and is also used to detect the internal pressure of the mud and water bin and the air pressure bin, as well as to detect the viscosity of the mud after circulation and transported to the inside of the slurry inlet component 1.
[0025] When the inspection and control component 2 detects that the pressure in the mud and water bin changes rapidly, the inspection and control component 2 controls the opening and closing of the material pipe in the slurry inlet component 1 accordingly to adjust the feeding amount. At the same time, the inspection and control component 2 also controls the operation of the air pressure maintaining device. The air pressure maintaining device is used to adjust the air pressure bin pressure, and transmits the pressure to the mud and water bin through the air pressure bin. The mud and water bin pressure is adjusted by adjusting the air pressure bin pressure, and the internal pressure of the mud and water bin is adjusted by adjusting the feeding amount and cooperating with the air pressure maintaining device. The internal pressure of the mud and water bin is ensured by quickly stabilizing the internal pressure of the mud and water bin.
[0026] During the feeding amount adjustment process, when an increase is required, the inspection and control component 2 controls all the material pipes in the slurry inlet component 1 to open, and then controls the circulation component 4 to be powered on. The circulation component 4 extracts part of the mud inside the slurry discharge component 3 and transports it to the inside of the slurry inlet component 1, so as to achieve the purpose of rapid increase.
[0027] When the pipe diameter is fixed, the fluid pressure inside the pipe can be increased by changing the speed of the pump body. Increasing the fluid pressure in the pipe can push more fluid through the pipe, thereby increasing the output.
[0028] During this process, since the mud inside the slurry discharge component 3 is the mud that already carries residue, its viscosity changes. When it is mixed with the mud inside the slurry inlet component 1, the overall viscosity will change. Therefore, a fluid replenishment component 5 is provided. The fluid replenishment component 5 is used to inject liquid into the mud inside the circulation component 4 so that the viscosity is maintained at a moderate state after mixing with the mud inside the slurry inlet component 1.
[0029] This device can automatically adjust the feeding amount according to the internal pressure of the mud and water bin and automatically adjust the viscosity of the circulated mud, effectively improving the shield construction efficiency and ensuring construction safety.
[0030] In one embodiment of the present invention, Figure 2 As shown, the slurry inlet assembly 1 may include a positioning plate 11, an inner discharge pipe 12, an outer discharge pipe 13, an annular material distribution seat 14, a first solenoid valve 15, a slurry inlet branch pipe 16, a slurry inlet main pipe 17 and a first pump body 18.
[0031] Among them, the positioning plate 11 is fixedly connected to the outer surface of the air pressure bin in the slurry balance shield, and the inspection and control component 2, the inner discharge pipe 12, the outer discharge pipe 13 and the annular distribution seat 14 are arranged on the outer surface of the positioning plate 11 from the inside to the outside. One end of the inspection and control component 2, one end of the inner discharge pipe 12 and one end of the outer discharge pipe 13 respectively pass through the interior of the slurry bin in the slurry balance shield. A first solenoid valve 15 is respectively provided on the surface of one end of the inner discharge pipe 12 and one end of the outer discharge pipe 13, and is electrically connected to the inspection and control component 2. The inner discharge pipe 12 and the outer discharge pipe 13 are respectively connected to the interior of the annular distribution seat 14 through the slurry feed branch pipe 16, and one end of the slurry feed main pipe 17 is connected to the interior of the annular distribution seat 14. The first pump body 18 is provided on the surface of the slurry feed main pipe 17 and is electrically connected to the inspection and control component 2.
[0032] It should be noted that the inspection and control component 2 described in this embodiment can adjust the slurry conveying rate inside the slurry inlet main pipe 17 by adjusting the rotation rate of the first pump body 18 .
[0033] Specifically, the inspection and control component 2 controls the first pump body 18 to be powered on and run, and the first pump body 18 runs to extract mud. The mud is transported to the inside of the annular material distribution seat 14 through the slurry inlet main pipe 17, and then transported to the inside of the inner discharge pipe 12 and the outer discharge pipe 13 by the slurry inlet branch pipe 16, and finally transported to the inside of the mud and water bin by the inner discharge pipe 12 and the outer discharge pipe 13. By controlling the opening and closing of the first solenoid valve 15, the loading status of the inner discharge pipe 12 and the outer discharge pipe 13 can be controlled respectively.
[0034] When an increase is required, the first electromagnetic valve 15 corresponding to the inner discharge pipe 12 is opened.
[0035] In normal use, it is only necessary to open the first solenoid valve 15 corresponding to the outer discharge pipe 13 .
[0036] In one embodiment of the present invention, Figure 3 As shown, the monitoring component 2 may include a controller 21 , a pressure sensor 22 and a viscosity sensor 23 .
[0037] Among them, the controller 21 is bolted to the outer surface of the positioning plate 11, the pressure sensor 22 is arranged inside the controller 21, one end of the pressure sensor 22 passes through the mud and water tank in the mud and water balance shield, and the viscosity sensor 23 is arranged on the surface of the slurry inlet main pipe 17. The pressure sensor 22 and the viscosity sensor 23 are electrically connected to the controller 21 respectively.
[0038] It should be noted that the controller 21 described in this embodiment has a built-in wireless communication module (not shown in the figure), and the controller 21 can receive instructions sent from an external terminal through the wireless communication module.
[0039] Specifically, the pressure sensor 22 is used to detect the pressure inside the mud and water tank and the air pressure tank, which is convenient for adjusting the internal pressure of the mud and water tank and the air pressure tank. The viscosity sensor 23 is used to detect the viscosity of the mixed mud, which is convenient for timely adjustment of the mud viscosity. The entire electrical components are controlled by the controller 21, with accurate data, stable performance, and easy unified control.
[0040] In one embodiment of the present invention, Figure 4 As shown, the slurry discharge assembly 3 may include a slurry discharge main pipe 31 , a first diversion pipe 32 , a second pump body 33 and a second solenoid valve 3 .
[0041] In summary, a mud-water balance shield mud circulation device in an embodiment of the present invention can automatically adjust the feeding amount according to the internal pressure of the mud-water bin and automatically adjust the viscosity of the circulated mud, effectively improving the shield construction efficiency and ensuring construction safety.
[0042] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.
[0043] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A slurry circulation device for a slurry shield, comprising a slurry inlet assembly (1), a monitoring assembly (2), a slurry discharge assembly (3), a circulation assembly (4) and a fluid replenishment assembly (5), characterized in that: The slurry inlet assembly (1), the fluid replenishment assembly (5) and the slurry discharge assembly (3) are sequentially arranged inside the slurry shield; The inspection and control component (2) is arranged on the surface of the pulp feeding component (1); One end of the slurry inlet component (1), the inspection and control component (2) and the slurry discharge component (3) respectively penetrates the interior of the slurry bin in the slurry balance shield; The circulation component (4) is arranged between the pulp inlet component (1) and the pulp discharge component (3), and is communicated with the interior of the pulp inlet component (1) and the interior of the pulp discharge component (3), respectively; One end of the fluid replenishing component (5) is connected to one end of the circulation component (4); The inspection and control component (2) is respectively connected to the pulp inlet component (1), the pulp discharge component (3), the circulation component (4) and the liquid replenishment component (5).
2. The slurry circulation device for a slurry shield according to claim 1, characterized in that: The pulp inlet assembly (1) comprises a positioning plate (11), an inner discharge pipe (12), an outer discharge pipe (13), an annular material distribution seat (14), a first solenoid valve (15), a pulp inlet branch pipe (16), a pulp inlet main pipe (17) and a first pump body (18); The positioning plate (11) is fixedly connected to the outer surface of the air pressure chamber in the slurry shield; The inspection and control component (2), the inner discharge pipe (12), the outer discharge pipe (13) and the annular material distribution seat (14) are sequentially arranged on the outer surface of the positioning plate (11) from the inside to the outside; One end of the inspection and control component (2), one end of the inner discharge pipe (12), and one end of the outer discharge pipe (13) respectively penetrate into the mud and water bin of the mud and water balance shield; A first solenoid valve (15) is provided on one end of the inner discharge pipe (12) and one end of the outer discharge pipe (13), and is electrically connected to the inspection and control component (2); The inner discharge pipe (12) and the outer discharge pipe (13) are respectively connected to the interior of the annular material distribution seat (14) through the pulp inlet branch pipe (16); One end of the pulp inlet main pipe (17) is connected to the interior of the annular material distribution seat (14); The first pump body (18) is arranged on the surface of the pulp inlet main pipe (17) and is electrically connected to the inspection and control component (2).
3. The slurry circulation device for a slurry shield according to claim 2, characterized in that: The inspection and control component (2) includes a controller (21), a pressure sensor (22) and a viscosity sensor (23); The controller (21) is bolted to the outer surface of the positioning plate (11); The pressure sensor (22) is arranged inside the controller (21), and one end of the pressure sensor (22) penetrates into the mud and water tank of the mud and water balance shield; The viscosity sensor (23) is arranged on the surface of the pulp inlet main pipe (17); The pressure sensor (22) and the viscosity sensor (23) are electrically connected to the controller (21) respectively.
4. The slurry circulation device for a slurry shield according to claim 3, characterized in that: The slurry discharge assembly (3) comprises a slurry discharge main pipe (31), a first diversion pipe (32), a second pump body (33) and a second solenoid valve (34); One end of the slurry discharge main pipe (31) penetrates into the interior of the slurry tank in the slurry shield; The first shunt pipe (32) and the second pump body (33) are sequentially arranged on the surface of the slurry discharge main pipe (31), the second solenoid valve (34) is arranged on the surface of the first shunt pipe (32), and the second pump body (33) and the second solenoid valve (34) are respectively electrically connected to the controller (21); One end of the first shunt pipe (32) is connected to one end of the circulation component (4).
5. The slurry circulation device for a slurry shield according to claim 4, characterized in that: The circulation assembly (4) includes a circulation pipeline (41), a second diversion pipe (42), a third pump body (43) and a third solenoid valve (44); The circulation pipe (41) is arranged between the pulp inlet main pipe (17) and the pulp discharge main pipe (31), one end of the circulation pipe (41) is connected to the interior of the pulp inlet main pipe (17), and the other end of the circulation pipe (41) is connected to one end of the first diversion pipe (32); The second diversion pipe (42) and the third pump body (43) are sequentially arranged on the surface of the circulation pipe (41); The third solenoid valve (44) is arranged on the surface of the second shunt pipe (42); The third pump body (43) and the third solenoid valve (44) are electrically connected to the controller (21) respectively; One end of the second shunt tube (42) is connected to one end of the fluid infusion assembly (5).
6. The slurry circulation device for a slurry shield according to claim 5, characterized in that: The fluid infusion assembly (5) comprises a fluid infusion tube (51) and a fourth pump body (52); One end of the fluid infusion tube (51) is connected to one end of the second shunt tube (42); The fourth pump body (52) is arranged on the surface of the fluid infusion tube (51) and is electrically connected to the controller (21).