Cutter head washing pipeline structure in mixed slurry balance shield

Abstract

The utility model discloses a cutterhead washing pipeline structure in a mixed slurry balance shield, which comprises a slurry feeding pipeline and a slurry discharging pipeline, an inlet of the slurry feeding pipeline is connected with an adjusting groove of a slurry treatment groove, an outlet of the slurry feeding pipeline is connected with a cutterhead of the slurry balance shield, an inlet of the slurry discharging pipeline is connected with the slurry balance shield, and an outlet of the slurry discharging pipeline is connected with the slurry treatment groove. The sludge conveying pipeline is sequentially provided with a sludge conveying pump, a first densimeter, a first flow meter and a first adjusting valve from an inlet to an outlet, the sludge discharging pipeline is sequentially provided with a second adjusting valve, a sludge discharging pump, a second flow meter, a second densimeter and a sludge discharging relay pump from an inlet to an outlet, and the outlet of the sludge conveying pipeline is connected with a plurality of branch outlets. The branch outlets are located in the center area, the edge area and the transition area of a cutterhead of the slurry balance shield correspondingly. The device has the advantages that the device is composed of the mud feeding pipeline and the mud discharging pipeline, and the branch outlets of the mud feeding pipeline are formed in the center area, the edge area and the transition area of the cutter head, so that the overall scouring of the cutter head is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry shields, in particular to a cutter head flushing pipeline structure in a mixed slurry shield. Background Art

[0002] The hybrid slurry shield is a common construction equipment in complex strata, especially in river-crossing and sea-crossing tunnel construction. It uses special slurry to pressurize small particles into the strata to be excavated, and gradually accumulates on the excavation surface through particle classification to form an impermeable mud film, which interacts with the cutterhead to form support to stabilize the excavation surface. However, the existing hybrid slurry shield is usually unable to flush the cutterhead as a whole, especially the transition area between the center area of ​​the cutterhead and the edge area of ​​the cutterhead.

[0003] Therefore, there is a need for a cutterhead flushing pipeline structure in a hybrid slurry shield that can solve the above problems. Summary of the invention

[0004] The purpose of the utility model is to provide a cutter disc flushing pipeline structure in a hybrid slurry balance shield based on the above-mentioned deficiencies of the prior art, which is composed of a mud delivery pipeline and a mud discharge pipeline, and the branch outlets of the mud delivery pipeline are arranged in the central area, edge area and transition area of ​​the cutter disc, thereby realizing the overall flushing of the cutter disc.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A cutterhead flushing pipeline structure in a hybrid slurry shield comprises a mud delivery pipeline and a mud discharge pipeline, wherein the mud delivery pipeline inlet is connected to an adjustment tank of a slurry treatment tank, and the outlet is connected to the cutterhead of the slurry shield; the mud discharge pipeline inlet is connected to the slurry shield, and the outlet is connected to the slurry treatment tank; the mud delivery pipeline is provided with a mud delivery pump, a first density meter, a first flow meter and a first regulating valve in sequence from the inlet to the outlet; the mud discharge pipeline is provided with a second regulating valve, a mud discharge pump, a second flow meter, a second density meter and a mud discharge relay pump in sequence from the inlet to the outlet; the mud delivery pipeline outlet is connected to a plurality of branch outlets, and the branch outlets are respectively located in a central area, an edge area and a transition area of ​​the cutterhead of the slurry shield.

[0007] The mud delivery pipeline is provided with a first water pressure gauge in the section between the first flow meter and the first regulating valve, the mud balance shield is provided with a second water pressure gauge, the first regulating valve has a first branch connected in parallel at both ends, and a third regulating valve is installed on the first branch.

[0008] A second branch is provided between the mud delivery pipeline and the mud discharge pipeline, and a fourth regulating valve is provided on the second branch. The inlet of the second branch is arranged on the section of the mud delivery pipeline between the first water pressure gauge and the first flow meter, and the outlet is arranged on the section of the mud discharge pipeline between the second regulating valve and the mud discharge pump.

[0009] The first water pressure gauge, the second water pressure gauge, the third regulating valve and the mud delivery pump are all connected to the mud water pressure management system respectively.

[0010] The adjustment tank is connected to the mud water quality management system.

[0011] The first density meter, the first flow meter, the second flow meter and the second density meter are respectively connected to a soil removal volume management system.

[0012] The central area of ​​the cutter disc is provided with five branch outlets, which are respectively arranged in the center of the cutter disc and in the upper left, upper right, lower left and lower right of the center of the cutter disc; the edge area of ​​the cutter disc is provided with eight branch outlets along its circumference; and the transition area of ​​the cutter disc is provided with eight branch outlets along its circumference.

[0013] The utility model has the advantages that it is composed of a mud delivery pipeline and a mud discharge pipeline, and the branch outlets of the mud delivery pipeline are arranged in the central area, the edge area and the transition area of ​​the cutter disc, thereby realizing the overall flushing of the cutter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a working principle diagram of the cutter head flushing pipeline structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the back side of the cutter disc of the utility model. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0017] like Figure 1~2 As shown, the marks in the figure represent respectively:

[0018] Mud delivery pipeline 1, mud discharge pipeline 2, mud and water treatment tank 3, adjustment tank 4, mud and water balance shield 5, cutter head 6, mud delivery pump 7, first density meter 8, first flow meter 9, first regulating valve 10, second regulating valve 11, mud discharge pump 12, second flow meter 13, second density meter 14, mud discharge relay pump 15, first water pressure gauge 16, second water pressure gauge 17, third regulating valve 18, fourth regulating valve 19, mud and water pressure management system 20, mud and water quality management system 21, excavation volume management system 22.

[0019] Example: Figure 1~2 As shown, the present embodiment relates to a cutterhead flushing pipeline structure in a hybrid slurry shield, which mainly includes a mud delivery pipeline 1 and a mud discharge pipeline 2. The inlet of the mud delivery pipeline 1 is connected to the adjustment tank 4 of the mud and water treatment tank 3, and the outlet of the mud delivery pipeline 1 is connected to the cutterhead 6 of the slurry balance shield 5. The inlet of the mud discharge pipeline 2 is connected to the slurry balance shield 5, and the outlet of the mud discharge pipeline 2 is connected to the mud and water treatment tank 3. The mud delivery pipeline 1 is provided with a mud delivery pump 7, a first density meter 8, a first flow meter 9 and a first regulating valve 10 from the inlet to the outlet. The mud delivery pump 7 is used to pump the mud in the adjustment tank 4, and the first density meter 8 and the first The flowmeter 9 is used to measure the density and flow rate of the mud in the mud delivery pipeline 1 respectively. The first regulating valve 10 is used to control the switch of the mud delivery pipeline 1 and the amount of mud passing through. The mud discharge pipeline 2 is provided with a second regulating valve 11, a mud discharge pump 12, a second flowmeter 13, a second density meter 14 and a mud discharge relay pump 15 from the inlet to the outlet. The second regulating valve 11 is used to control the switch of the mud discharge pipeline 2 and the amount of mud passing through. The mud discharge pump 12 and the mud discharge relay pump 15 are used to pump the mud in the mud balance shield 5. The second flowmeter 13 and the second density meter 14 are used to measure the density and flow rate of the mud in the mud discharge pipeline 2 respectively. A circulation passage can be formed between the mud delivery pipeline 1 and the mud discharge pipeline 2. Specifically, during the construction process, the qualified mud in the adjustment tank 4 is delivered to the slurry balance shield 5 through the mud delivery pipeline 1, and then the qualified mud is mixed with the slag produced by the excavation of the slurry balance shield 5 to obtain mixed mud. The mixed mud is delivered to the mud and water treatment tank 3 through the mud discharge pipeline 2. After the mixed mud is treated once, the qualified mud is separated and placed in the adjustment tank 4, and is again delivered to the slurry balance shield 5 through the mud delivery pipeline 1, so as to achieve the purpose of slurry recycling and continuous excavation, and the unqualified mud is subjected to secondary and tertiary treatment to obtain slag and clean water. The clean water can be recycled and the slag can be transported out, so as to meet the requirements of green environmental protection and zero discharge of abandoned slurry.

[0020] like Figure 1As shown, the mud delivery pipeline 1 is provided with a first water pressure gauge 16 in the section between the first flow meter 9 and the first regulating valve 10. The first water pressure gauge 16 is used to measure the pressure of the mud in the mud delivery pipeline 1. The mud shield 5 is provided with a second water pressure gauge 17. The second water pressure gauge 17 is used to measure the pressure of the mud in the mud shield 5. The first branch is connected in parallel at both ends of the first regulating valve 10. The third regulating valve 18 is installed on the first branch. The first branch with the third regulating valve 18 is used to adjust the pressure of the mud in the mud delivery pipeline 1. The first water pressure gauge 16, the second water pressure gauge 17, the third regulating valve 10 and the mud delivery pump 7 are respectively connected to the mud water pressure management system 20. The mud water pressure management system 20 is used to monitor and control the pressure of the mud in the mud delivery pipeline 1 to ensure that the mud with the required pressure is pumped into the mud shield 5. A second branch is provided between the mud delivery pipeline 1 and the mud discharge pipeline 2, and a fourth regulating valve 19 is provided on the second branch. The inlet of the second branch is provided on the section of the mud delivery pipeline 1 between the first water pressure gauge 16 and the first flow meter 17, and the outlet of the second branch is provided on the section of the mud discharge pipeline 2 between the second regulating valve 11 and the mud discharge pump 12. The second branch with the fourth regulating valve 19 is also provided for regulating the pressure of the mud in the mud delivery pipeline 1. In addition, the adjustment tank 4 is connected to the mud water quality management system 21, and the mud water quality management system 21 is used to control the quality of the mud to meet the standards. The first density meter 8, the first flow meter 9, the second flow meter 13 and the second density meter 14 are respectively connected to the excavated soil volume management system 22, and the excavated soil volume management system 22 can judge whether the excavated soil volume meets the requirements according to the readings of the first density meter 8, the first flow meter 9, the second flow meter 13 and the second density meter 14.

[0021] like Figure 1~2 As shown, the outlet of the mud delivery pipeline 1 is connected to a plurality of branch outlets, which are respectively located in the central area, edge area and transition area of ​​the cutterhead 6 of the mud-water balance shield 5, wherein the transition area is located between the central area and the edge area. In this embodiment, the central area of ​​the cutterhead 6 is provided with five branch outlets, which are respectively provided at the center of the cutterhead 6 and at the upper left, upper right, lower left and lower right of the center of the cutterhead 6, the edge area of ​​the cutterhead 6 is provided with eight branch outlets along its circumference, and the transition area of ​​the cutterhead 6 is provided with eight branch outlets along its circumference, so that the overall flushing of the cutterhead 6 can be achieved.

[0022] The beneficial technical effect of this embodiment is that it consists of a mud delivery pipeline and a mud discharge pipeline, and the branch outlets of the mud delivery pipeline are arranged in the central area, edge area and transition area of ​​the cutter disc, thereby achieving overall flushing of the cutter disc.

[0023] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A cutterhead flushing pipeline structure in a hybrid slurry shield, characterized in that: It includes a mud delivery pipeline and a mud discharge pipeline, the inlet of the mud delivery pipeline is connected to the adjustment tank of the mud and water treatment tank, and the outlet is connected to the cutter head of the mud balance shield, the inlet of the mud discharge pipeline is connected to the mud balance shield, and the outlet is connected to the mud and water treatment tank, the mud delivery pipeline is provided with a mud delivery pump, a first density meter, a first flow meter and a first regulating valve from the inlet to the outlet, the mud discharge pipeline is provided with a second regulating valve, a mud discharge pump, a second flow meter, a second density meter and a mud discharge relay pump from the inlet to the outlet, the outlet of the mud delivery pipeline is connected to a plurality of branch outlets, and the branch outlets are respectively located in the central area, the edge area and the transition area of ​​the cutter head of the mud balance shield.

2. The cutterhead flushing pipeline structure in a hybrid slurry shield according to claim 1, characterized in that: The mud delivery pipeline is provided with a first water pressure gauge in the section between the first flow meter and the first regulating valve, the mud balance shield is provided with a second water pressure gauge, the first regulating valve has a first branch connected in parallel at both ends, and a third regulating valve is installed on the first branch.

3. The cutterhead flushing pipeline structure in a hybrid slurry shield according to claim 2, characterized in that: A second branch is provided between the mud delivery pipeline and the mud discharge pipeline, and a fourth regulating valve is provided on the second branch. The inlet of the second branch is arranged on the section of the mud delivery pipeline between the first water pressure gauge and the first flow meter, and the outlet is arranged on the section of the mud discharge pipeline between the second regulating valve and the mud discharge pump.

4. The cutterhead flushing pipeline structure in a hybrid slurry shield as claimed in claim 2, characterized in that: The first water pressure gauge, the second water pressure gauge, the third regulating valve and the mud delivery pump are all connected to the mud water pressure management system respectively.

5. The cutterhead flushing pipeline structure in a hybrid slurry shield according to claim 1, characterized in that: The adjustment tank is connected to the mud water quality management system.

6. The cutterhead flushing pipeline structure in a hybrid slurry shield according to claim 1, characterized in that: The first density meter, the first flow meter, the second flow meter and the second density meter are respectively connected to a soil removal volume management system.

7. The cutterhead flushing pipeline structure in a hybrid slurry shield according to claim 1, characterized in that: The central area of ​​the cutter disc is provided with five branch outlets, which are respectively arranged in the center of the cutter disc and in the upper left, upper right, lower left and lower right of the center of the cutter disc; the edge area of ​​the cutter disc is provided with eight branch outlets along its circumference; and the transition area of ​​the cutter disc is provided with eight branch outlets along its circumference.

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