CN210858736U - Device for preventing shield spiral conveyor from gushing - Google Patents
Device for preventing shield spiral conveyor from gushing Download PDFInfo
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- CN210858736U CN210858736U CN201921825157.2U CN201921825157U CN210858736U CN 210858736 U CN210858736 U CN 210858736U CN 201921825157 U CN201921825157 U CN 201921825157U CN 210858736 U CN210858736 U CN 210858736U
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- ball valve
- shield
- rubber hose
- manual ball
- pneumatic ball
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Abstract
The utility model discloses a device for preventing shield constructs screw conveyer gushes, including external relief valve, three way connection, pneumatic ball valve and rubber hose, external relief valve is installed to three way connection's one end, manual ball valve A and manual ball valve B are installed respectively to both ends in addition, external relief valve sets up the well lower part at soil bulkhead, install rubber hose on three way connection's the side pipeline, the position that rubber hose is close to three way connection is provided with pneumatic ball valve, be connected with control cable and trachea on the pneumatic ball valve, rubber hose is as drainage channel, its end is placed at the afterbody of shield structure machine, suction through the diaphragm pump produces the negative pressure, and then shield the machine with ponding discharge in the soil bin. In the shield tunneling process, when the water accumulation amount of the soil bin is too much, the pneumatic ball valve is controlled to be opened through the button switch on the panel of the operation room, water in the soil bin is discharged into the shield tail before being extracted, and the phenomenon that excessive gushing easily occurs at a slag outlet of the screw conveyor in the tunneling process is effectively prevented.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the construction, concretely relates to a device for preventing shield constructs screw conveyer gushing.
Background
In recent years, with the further development and utilization of underground space, the shield method has been more and more widely applied due to its advantages of high automation, safety, environmental protection, high construction efficiency and the like, the earth pressure balance shield machine keeps dynamic balance with the earth pressure and the water pressure on the face through the passive earth pressure in the earth bin, so that the face is in a stable state, the earth pressure balance shield machine discharges slag in a belt conveyor and marshalling train mode, rock cracks in a water-rich stratum especially develop in the tunneling process of the earth pressure balance shield machine, and the slag outlet of the screw conveyor frequently generates spewing under the action of high water pressure, thereby bringing adverse effects to the shield tunneling, the construction period and civilized construction, and becoming a great difficulty which troubles the shield construction.
At present, an effective solution for the gushing phenomenon of a screw conveyer of an earth pressure balance shield machine is not available, and a large amount of manpower and time are needed for cleaning after the gushing occurs.
Disclosure of Invention
In order to overcome among the prior art shield construction process, screw conveyer slag notch frequently takes place to gush, causes shield construction period delay, technical defect such as, the utility model provides a device for preventing shield constructs screw conveyer gushes, at the shield tunnelling in-process, when soil storehouse ponding is too much, opens through button switch control pneumatic ball valve on the control room panel, discharges into the shield tail in advance with the ponding in the soil storehouse, has solved foretell technical problem.
The utility model achieves the above purpose through the following technical proposal, a device for preventing the shield spiral conveyer from gushing comprises an external safety valve, a three-way joint, a manual ball valve A, a manual ball valve B, a pneumatic ball valve, a control cable, an air pipe and a rubber hose, wherein the external safety valve is installed at one end of the three-way joint, the manual ball valve A and the manual ball valve B are respectively installed at the other two ends, the external safety valve is arranged at the middle lower part of the soil bin wall and is in a normally open state, the rubber hose is installed on a side pipeline of the three-way joint, the pneumatic ball valve is arranged at the position of the rubber hose close to the three-way joint, the pneumatic ball valve is connected with the control cable and the air pipe, the opening and closing of the pneumatic ball valve are controlled by electric signals input on the control cable, the rubber hose is used as a drainage channel, and then the accumulated water in the soil bin is discharged out of the shield machine.
According to the device for preventing the shield spiral conveyor from gushing, the pneumatic ball valve adopts a high-pressure air source provided on the shield machine as power, and the opening and closing of the pneumatic ball valve can be controlled through the switch button of the operation chamber.
The device for preventing shield constructs screw conveyer gushing of foretell, manual ball valve B is the normal close state, and the end and the platform truck of place pipeline are linked together, opens manual ball valve B when the rubber hose is inside to be blockked up, closes manual ball valve A, dredges the pipeline through the recoil of platform truck clear water.
The device for preventing shield constructs screw conveyer gushes of foretell, manual ball valve A is the normally closed state, when can not carrying out clear water recoil drainage pipe, closes manual ball valve B, opens manual ball valve A, carries out artifical mediation through appurtenance to pipeline inside.
Foretell a device for preventing shield constructs screw conveyer gushes, external relief valve is the emergency measure who prevents that pneumatic ball valve from becoming invalid, and its position should set up the well lower part at the soil storehouse wall, and the water and slag separation back in the soil storehouse, the sediment is deposited in the soil storehouse bottom, and water is concentrated on the upper portion of sediment, is favorable to the quick discharge of soil storehouse ponding in order to reach the release like this, prevents effectively that screw conveyer gushes.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can reach following beneficial effect: the utility model relates to a device for preventing shield constructs screw conveyer gushes, at the shield structure in-process of drivage, when the soil storehouse ponding is too much, open through button switch control pneumatic ball valve on the control chamber panel, discharge into the shield tail in advance with ponding in the soil storehouse, open manual ball valve B when the inside jam of rubber hose, close manual ball valve A, dredge the pipeline through platform truck clear water recoil, can prevent effectively that screw conveyer slag notch from gushing and leading to the increase of scarfing cinder work load, the labour's input has effectively been reduced, avoid shutting down for a long time and delay the time limit for a project, be applicable to all earth pressure balance shield structure machine's work progress.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a front view of a device for preventing gushing of a shield screw conveyor according to the present invention;
fig. 2 is a top view of a device for preventing gushing of a shield screw conveyor of the present invention;
FIG. 3 is a schematic view of the installation of the present invention during use;
in the figure: 1-soil bin water accumulation, 2-soil bin muck, 3-soil bin wall, 4-external safety valve, 5-three-way joint, 6-manual ball valve A, 7-manual ball valve B, 8-pneumatic ball valve, 9-control wire, 10-air pipe and 11-rubber hose.
Detailed Description
As shown in fig. 1 and 2, for the utility model relates to a main view and a top view of a device for preventing shield spiral conveyer gushes, including external relief valve 4, three way connection 5, manual ball valve A6, manual ball valve B7, pneumatic ball valve 8, control cable 9, trachea 10 and rubber hose 11, external relief valve 4 is installed to three way connection 5's one end, manual ball valve A6 and manual ball valve B7 are installed respectively to both ends in addition, external relief valve 4 sets up the well lower part at soil storehouse wall 3, for normally open state, install rubber hose 11 on three way connection 5's the side pipeline, rubber hose 11 is provided with pneumatic ball valve 8 near three way connection 5's position, be connected with control cable 9 and trachea 10 on the pneumatic ball valve 8, control the opening and closing of pneumatic ball valve 8 through the last signal of telecommunication of input of control cable 9.
External relief valve 4 is the emergency measure who prevents pneumatic ball valve 8 inefficacy, and its position should set up the middle and lower part at soil warehouse wall 3, and the water and slag separation back in the soil warehouse, soil warehouse muck 2 deposits in the soil warehouse bottom, and soil warehouse ponding 1 concentrates on the upper portion of soil warehouse muck 2, is favorable to the quick discharge of soil warehouse ponding 1 in order to reach the release.
The working principle of the device is as follows: the pneumatic ball valve 8 adopts a high-pressure air source provided on the shield machine as power, the opening and closing of the pneumatic ball valve 8 can be controlled through a switch button of an operation chamber, the rubber hose 11 is used as a drainage channel, the tail end of the rubber hose is placed at the tail part of the shield machine, negative pressure is generated through the suction of a diaphragm pump, and then the soil bin accumulated water 1 is discharged out of the shield machine; the manual ball valve B7 is in a normally closed state, the tail end of the pipeline where the manual ball valve B7 is located is communicated with the trolley, when the interior of the rubber hose 11 is blocked, the manual ball valve B7 is opened, the manual ball valve A6 is closed, and the pipeline is dredged by the back flushing of the trolley clean water; the manual ball valve A6 is in a normally closed state, and when the drainage pipeline cannot be backflushed with clean water, the manual ball valve B7 is closed, the manual ball valve A6 is opened, and the interior of the pipeline is dredged manually through an auxiliary tool.
As shown in FIG. 3, for the utility model discloses installation sketch map in the use, when the shield constructs the construction, its use is as follows:
s1: judging whether a large amount of accumulated water exists in the soil bin or not by observing the soil bin pressure readings displayed on the upper computer;
s2: if a large amount of accumulated water exists in the soil bin, a rubber hose 11 water discharge pipe is placed to the tail part of the shield machine, an operation chamber opens a pneumatic ball valve 8 through a switch button to observe whether water is discharged from the shield tail or not, a diaphragm pump of the shield tail is opened while the water is discharged, and the accumulated water is discharged out of the tunnel;
s3: observing the drainage condition of the shield tail and the pressure change condition of the soil bin to judge whether the accumulated water 1 in the soil bin is drained completely, closing the pneumatic ball valve 8 by the operating room through a switch button after drainage, discharging the accumulated water of the shield tail out of the tunnel by the shield tail diaphragm pump, and recovering normal tunneling;
s4: judging that water is accumulated in the soil bin, opening the pneumatic ball valve 8 in the operation chamber, if no water is discharged from the rubber hose 11, possibly blocking the interior of the device, closing the pneumatic ball valve 8 in the operation chamber, opening the manual ball valve B7, backflushing the blocking device by using clean water on the shield tunneling machine, and opening the pneumatic ball valve 8 for normal drainage after dredging;
s5: if the blockage device cannot be dredged by the backflushing of the clean water in the S4, closing the manual ball valve B7, opening the manual ball valve A6, manually dredging by using auxiliary tools such as reinforcing steel bars and the like, and opening the pneumatic ball valve 8 to normally drain water after the dredging is finished;
s6: after the accumulated water 1 in the soil bin is discharged to the tail of the shield, the accumulated water is pumped away in time by adopting a diaphragm pump.
Adopt the device can prevent effectively that the screw conveyer slag notch gushing from leading to the scarfing cinder work load to increase, effectively reduced labour's input, avoid long-time shut down and delay the time limit for a project, be applicable to all earth pressure balance shield structure machines's work progress.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (4)
1. The utility model provides a device for preventing shield constructs screw conveyer gushes, includes external relief valve (4), three way connection (5), manual ball valve A (6), manual ball valve B (7), pneumatic ball valve (8), control cable (9), trachea (10) and rubber hose (11), its characterized in that: one end of the three-way joint (5) is provided with an external safety valve (4), the other two ends are respectively provided with a manual ball valve A (6) and a manual ball valve B (7), the external safety valve (4) is arranged at the middle lower part of the soil bin wall (3) and is in a normally open state, a rubber hose (11) is arranged on a side pipeline of the three-way joint (5), a pneumatic ball valve (8) is arranged at the position of the rubber hose (11) close to the three-way joint (5), the pneumatic ball valve (8) is connected with a control cable (9) and an air pipe (10), the opening and closing of the pneumatic ball valve (8) are controlled by an electric signal input on a control cable (9), the rubber hose (11) is used as a drainage channel, the tail end of the pump is placed at the tail part of the shield machine, negative pressure is generated through suction of the diaphragm pump, and accumulated water in the soil bin is discharged out of the shield machine.
2. The apparatus of claim 1, wherein the shield screw conveyor comprises: the pneumatic ball valve (8) adopts a high-pressure air source provided by the shield machine as power, and the opening and closing of the pneumatic ball valve (8) can be controlled through a switch button of an operation chamber.
3. The apparatus of claim 1, wherein the shield screw conveyor comprises: manual ball valve B (7) are the normal close state, and the end and the platform truck of place pipeline are linked together, open manual ball valve B (7) when rubber hose (11) is inside to be blockked up, close manual ball valve A (6), dredge through platform truck clear water recoil to the pipeline.
4. The apparatus of claim 1, wherein the shield screw conveyor comprises: the manual ball valve A (6) is in a normally closed state, when the clean water backflushing drainage pipeline cannot be carried out, the manual ball valve B (7) is closed, the manual ball valve A (6) is opened, and manual dredging is carried out on the interior of the pipeline through an auxiliary tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825157.2U CN210858736U (en) | 2019-10-28 | 2019-10-28 | Device for preventing shield spiral conveyor from gushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825157.2U CN210858736U (en) | 2019-10-28 | 2019-10-28 | Device for preventing shield spiral conveyor from gushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858736U true CN210858736U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921825157.2U Active CN210858736U (en) | 2019-10-28 | 2019-10-28 | Device for preventing shield spiral conveyor from gushing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005424A (en) * | 2019-04-22 | 2019-07-12 | 中建三局基础设施建设投资有限公司 | It is a kind of for weakening the device and its application method that shield screw machine is gushed |
-
2019
- 2019-10-28 CN CN201921825157.2U patent/CN210858736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005424A (en) * | 2019-04-22 | 2019-07-12 | 中建三局基础设施建设投资有限公司 | It is a kind of for weakening the device and its application method that shield screw machine is gushed |
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