阅读说明：本技术 一种多通道排浆系统及盾构机 (Multichannel slurry discharge system and shield tunneling machine ) 是由 王又增 苏志学 钟宇 周小磊 徐金秋 李俊志 叶蕾 贺开伟 聂恺延 张�浩 韩文 于 2021-09-22 设计创作，主要内容包括：本发明具体涉及一种多通道排浆系统及盾构机,盾构机包括盾构机刀盘、前隔板、后隔板、泥水仓、气垫仓及多通道排浆系统,多通道排浆系统包括：主排浆管线,设在后隔板后方且装有排浆泵；第一排浆管线,设在后隔板底部、且与气垫仓及主排浆管线连通,第一排浆管线上装有第一阀门；两条第二排浆管线,设在前隔板上泥浆门的左右两侧、且均与泥水仓及主排浆管线连通,两条第二排浆管线上均装有第二阀门；第三排浆管线,设在气垫仓底部且与主排浆管线连通,第三排浆管线上安装有第三阀门。本发明不仅能保证渣土的正常排出,使得施工效率高,而且还增加了多通道排浆系统的使用工况,满足了盾构机在复杂多变的工况下的排浆需求。(The invention relates to a multi-channel slurry discharge system and a shield machine, wherein the shield machine comprises a shield machine cutter head, a front partition plate, a rear partition plate, a muddy water bin, an air cushion bin and a multi-channel slurry discharge system, and the multi-channel slurry discharge system comprises: the main slurry discharge pipeline is arranged behind the rear partition plate and is provided with a slurry discharge pump; the first slurry discharge pipeline is arranged at the bottom of the rear partition plate and is communicated with the air cushion bin and the main slurry discharge pipeline, and a first valve is arranged on the first slurry discharge pipeline; the two second slurry discharge pipelines are arranged on the left side and the right side of the slurry door on the front partition plate and are communicated with the slurry cabin and the main slurry discharge pipeline, and second valves are arranged on the two second slurry discharge pipelines; and the third slurry discharge pipeline is arranged at the bottom of the air cushion bin and is communicated with the main slurry discharge pipeline, and a third valve is installed on the third slurry discharge pipeline. The invention not only can ensure the normal discharge of the muck and ensure high construction efficiency, but also increases the use working condition of the multi-channel slurry discharge system and meets the slurry discharge requirement of the shield tunneling machine under the complex and variable working condition.)

1. A multi-channel slurry discharge system comprising:

the main slurry discharge pipeline (8) is arranged behind the rear partition plate (3) of the shield machine, and a slurry discharge pump (10) is installed on the main slurry discharge pipeline (8);

the first slurry discharge pipeline (11) is arranged at the bottom of the rear partition plate (3) and communicated with an air cushion bin (5) of the shield tunneling machine, the first slurry discharge pipeline (11) is communicated with the main slurry discharge pipeline (8), and a first valve (12) is mounted on the first slurry discharge pipeline (11);

its characterized in that, multichannel row thick liquid system still includes:

the second slurry discharge pipeline (13) is arranged at the bottom of the front partition plate (2) of the shield machine and is communicated with a slurry sump (4) of the shield machine, the second slurry discharge pipeline (13) extends backwards to penetrate through the rear partition plate (3) and is communicated with the main slurry discharge pipeline (8), two second slurry discharge pipelines (13) are arranged and are respectively arranged at the left side and the right side of a slurry door (6) of the shield machine, and second valves (14) are respectively arranged on the two second slurry discharge pipelines (13);

the third slurry discharging pipeline (15) is arranged at the bottom of the air cushion bin (5) and is communicated with the air cushion bin (5), the third slurry discharging pipeline (15) is communicated with the main slurry discharging pipeline (8), and a third valve (16) is arranged on the third slurry discharging pipeline (15);

when the slurry discharging device is used, in a stratum where a cutter head (1) of the shield tunneling machine is not easy to form mud cakes, a slurry door (6) and a first valve (12) are opened, a second valve (14) and a third valve (16) are closed, a slurry discharging pump (10) is started, and at the moment, slurry enters a first slurry discharging pipeline (11) through the slurry door (6) and the bottom of an air cushion bin (5) in sequence, and then enters a main slurry discharging pipeline (8) through the first slurry discharging pipeline (11) to realize slurry discharging;

in a stratum where a slurry door (6) cannot be closed and a cutter head (1) of the shield tunneling machine is prone to mud cake formation or under the working condition that a pipe orifice of a first slurry discharge pipeline (11) is blocked, a third valve (16) is opened, a first valve (12) and a second valve (14) are closed, a slurry discharge pump (10) is started, and at the moment, slurry enters a main slurry discharge pipeline (8) through a third slurry discharge pipeline (15) to realize slurry discharge;

in a viscous stratum where a cutter head (1) of the shield tunneling machine is easy to cake mud, when the cutter head (1) of the shield tunneling machine rotates clockwise, a second valve (14) on the left side of a mud door (6) is opened, a first valve (12), a third valve (16) and a second valve (14) on the right side are closed, a mud discharging pump (10) is opened, and at the moment, mud enters a main mud discharging pipeline (8) through a second mud discharging pipeline (13) on the left side to realize mud discharging; when the cutter head of the shield tunneling machine rotates anticlockwise, the second valve (14) on the right side of the slurry door (6) is opened, the first valve (12), the third valve (16) and the second valve (14) on the left side are closed, the slurry discharging pump (10) is opened, and at the moment, slurry enters the main slurry discharging pipeline (8) through the first slurry discharging pipeline (11) on the right side to realize slurry discharging.

2. A multi-channel slurry discharge system according to claim 1, wherein the second valve (14) is configured to be disposed in the air cushion chamber (5), the third slurry discharge pipeline (15) is in communication with the second slurry discharge pipeline (13), and the third slurry discharge pipeline (15) is in communication with the second slurry discharge pipeline (13) at a position behind the second valve (14) and configured to be disposed in the air cushion chamber (5).

3. A multi-channel slurry discharge system according to claim 2, wherein a fourth valve (17) is further installed on the second slurry discharge pipeline (13), and the fourth valve (17) is located behind the position where the third slurry discharge pipeline (15) is communicated with the second slurry discharge pipeline (13).

4. A multi-channel slurry discharge system according to claim 3, wherein a fourth valve (17) is adapted to be arranged behind the rear bulkhead (3).

5. A multichannel pulp discharging system as claimed in any one of claims 2 to 4, characterized in that two third pulp discharging pipelines (15) are provided, two third pulp discharging pipelines (15) are respectively communicated with the second pulp discharging pipelines (13) on the left and right sides, and the third valves (16) are respectively installed on the two third pulp discharging pipelines (15).

6. A multi-channel slurry discharge system according to any one of claims 1 to 4, wherein a main valve (9) is further installed on the main slurry discharge pipeline (8), and the main valve (9) is used for controlling the slurry discharge of the whole multi-channel slurry discharge system to be switched on and off.

7. A multi-channel slurry discharge system according to claim 6, wherein the first valve (12), the second valve (14), the third valve (16) and the main valve (9) are all hydraulic valves.

8. A multi-channel slurry discharge system according to any one of claims 1 to 4, wherein two second slurry discharge pipelines (13) are located at the left and right sides above the first slurry discharge pipeline (11).

9. A multi-channel slurry discharge system according to any one of claims 1-4, characterized in that the multi-channel slurry discharge system further comprises a grate (7), and the grate (7) is covered on the front side of the first slurry discharge pipeline (11).

10. The utility model provides a shield constructs machine, constructs quick-witted blade disc (1), preceding baffle (2), back baffle (3) and multichannel row thick liquid system including the shield, wherein, be muddy water storehouse (4) between shield structure machine blade disc (1) and preceding baffle (2), be air cushion storehouse (5) between preceding baffle (2) and back baffle (3), the bottom of preceding baffle (2) is equipped with mud door (6), its characterized in that, multichannel row thick liquid system is the same with the multichannel row thick liquid system of claim 1~9 arbitrary one.

Technical Field

The invention relates to the technical field of slurry balance shield machines, in particular to a multichannel slurry discharge system and a shield machine.

Background

The slurry pressure balance shield is characterized in that slurry is injected into a slurry cabin of the shield, a slurry pressure chamber with certain pressure is formed after the slurry is filled in the whole slurry cabin, and then the slurry pressure chamber is balanced by the pressurization effect of the slurry and the pressure of the stratum so as to maintain the stability of an excavation working surface.

The utility model discloses a chinese utility model patent that the bulletin number is CN209339946U discloses a shield constructs quick-witted muddy water circulation system, including the blade disc, preceding baffle, back baffle and main thick liquid pipeline of arranging, the main thick liquid pipeline of arranging sets up the rear at the baffle of back, and install the thick liquid pump of arranging on the main thick liquid pipeline of arranging, be the muddy water storehouse between blade disc and the preceding baffle, be the air cushion storehouse between preceding baffle and the back baffle, the bottom of preceding baffle is equipped with the mud door, the bottom of back baffle is provided with the first thick liquid pipeline of arranging with air cushion storehouse intercommunication, first thick liquid pipeline of arranging and main thick liquid pipeline intercommunication, and install first valve on the first thick liquid pipeline, the front side cover of first thick liquid pipeline of arranging is equipped with the grid. The bottom of preceding baffle still is provided with the second and arranges the thick liquid pipeline, and the thick liquid pipeline is arranged to the second and extends backward and pass back baffle and with main thick liquid pipeline intercommunication of arranging, and install the second valve on the thick liquid pipeline is arranged to the second. In the normal tunneling process, opening the first valve, closing the second valve, starting a slurry discharging pump, and enabling slurry to enter a main slurry discharging pipeline through a first slurry discharging pipeline to realize slurry discharging; when sediment at the bottom of the mud-water bin causes stagnation and discharge, the mud door and the first valve are closed, the second valve and the slurry discharge pump are opened, and mud enters the main slurry discharge pipeline through the second slurry discharge pipeline to realize slurry discharge.

However, in the slurry discharging process, when the cutter head rotates in one direction, the second slurry discharging pipeline can discharge the dregs, and when the cutter head rotates in the other direction, the cut dregs can be taken to the other side of the muddy water bin due to the rotation of the cutter head, and the position of the second slurry discharging pipeline is fixed, so that the dregs cannot be discharged by the second slurry discharging pipeline, and the dregs are deposited in the muddy water bin. And when the mud door can not be closed and the grid is blocked, the mud in the air cushion bin can only be discharged through the main mud discharge pipeline at the rear side of the grid, so that the mud in the air cushion bin can not be discharged under the condition. Therefore, the slurry discharging system is applicable to less slurry discharging working conditions and cannot meet the slurry discharging requirement of the shield tunneling machine under complex and changeable working conditions.

Disclosure of Invention

The invention aims to provide a multi-channel slurry discharge system which can meet the requirement that a shield machine performs slurry discharge under complex and variable working conditions; the invention also aims to provide the shield tunneling machine which can discharge slurry under complex and variable working conditions.

In order to achieve the purpose, the multichannel pulp discharging system adopts the following technical scheme:

a multi-channel slurry discharge system comprising:

the main slurry discharge pipeline is arranged behind a rear partition plate of the shield machine, and a slurry discharge pump is mounted on the main slurry discharge pipeline;

the first slurry discharge pipeline is arranged at the bottom of the rear partition plate and communicated with an air cushion bin of the shield tunneling machine, the first slurry discharge pipeline is communicated with the main slurry discharge pipeline, and a first valve is mounted on the first slurry discharge pipeline;

the multichannel arranges thick liquid system still includes:

the two second slurry discharge pipelines are respectively used for being arranged at the left side and the right side of a slurry door of the shield machine and are provided with second valves;

the third slurry discharging pipeline is arranged at the bottom of the air cushion bin and is communicated with the air cushion bin, the third slurry discharging pipeline is communicated with the main slurry discharging pipeline, and a third valve is arranged on the third slurry discharging pipeline;

when the slurry discharging device is used, in a stratum where a cutter head of the shield tunneling machine is not easy to form mud cakes, a slurry door and a first valve are opened, a second valve and a third valve are closed, a slurry discharging pump is started, at the moment, slurry enters a first slurry discharging pipeline through the slurry door and the bottom of an air cushion bin in sequence, and then enters a main slurry discharging pipeline through the first slurry discharging pipeline to realize slurry discharging;

opening a third valve, closing the first valve and the second valve, and starting a slurry discharge pump under the working condition that the slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be bonded with mud cakes or a pipeline opening of the first slurry discharge pipeline is blocked, wherein slurry enters a main slurry discharge pipeline through the third slurry discharge pipeline to realize slurry discharge;

in a viscous stratum where a cutter head of the shield tunneling machine is easy to cake mud, when the cutter head of the shield tunneling machine rotates clockwise, a second valve on the left side of a mud valve is opened, a first valve, a third valve and a second valve on the right side are closed, a mud discharging pump is opened, and mud enters a main mud discharging pipeline through a second mud discharging pipeline on the left side at the moment to realize mud discharging; when the cutter head of the shield tunneling machine rotates anticlockwise, the second valve on the right side of the slurry door is opened, the first valve, the third valve and the second valve on the left side are closed, the slurry discharging pump is opened, and at the moment, slurry enters the main slurry discharging pipeline through the first slurry discharging pipeline on the right side to realize slurry discharging.

The beneficial effects of the above technical scheme are that: the invention adds a second slurry discharge pipeline and a third slurry discharge pipeline communicated with the air cushion bin on the basis of the original main slurry discharge pipeline, the original first slurry discharge pipeline and the original second slurry discharge pipeline, arranges two second slurry discharge pipelines on the left side and the right side of a slurry door of the shield tunneling machine, arranges the third slurry discharge pipeline at the bottom of the air cushion bin and communicated with the main slurry discharge pipeline, and arranges valves on the second slurry discharge pipeline and the third slurry discharge pipeline. When the multi-channel slurry discharging system is used, the multi-channel slurry discharging system not only can be suitable for slurry discharging of the slurry discharging system in the prior art under the condition of normal tunneling and slurry discharging delay caused by slag accumulation at the bottom of a slurry cabin, but also can solve the influence of different steering directions of the cutter head of the shield machine on slurry discharging of the slurry cabin through the second slurry discharging pipelines arranged at the left side and the right side of the slurry door, namely when the cutter head of the shield machine rotates clockwise, slag soil brought to the left side of the slurry cabin by the cutter head of the shield machine can be discharged along the second slurry discharging pipeline at the left side along with slurry; when the cutter head of the shield tunneling machine rotates anticlockwise, the residue soil brought to the right side of the muddy water bin by the cutter head of the shield tunneling machine can be discharged along the second slurry discharge pipeline on the right side along with the slurry; in addition, the third slurry discharge pipeline can also solve the problem of slurry discharge of the air cushion bin under the conditions that a slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be clogged with mud cakes or a pipeline opening of the first slurry discharge pipeline is blocked. The normal discharge of dregs in the multichannel slurry discharge system can be guaranteed, the construction efficiency is high, the use working condition of the multichannel slurry discharge system is increased, and the slurry discharge requirement of the shield tunneling machine under the complex and variable working condition is met.

Furthermore, the second valve is used for being arranged in the air cushion cabin, the third slurry discharge pipeline is communicated with the second slurry discharge pipeline, and the communication position of the third slurry discharge pipeline and the second slurry discharge pipeline is arranged behind the second valve and is used for being arranged in the air cushion cabin.

The beneficial effects of the above technical scheme are that: through arranging thick liquid pipeline with the third and communicate with the thick liquid pipeline is arranged to the second to communicate the position setting in the air cushion storehouse, not only can shorten the use length of thick liquid pipeline is arranged to the third like this, save the material of processing man-hour, reduce cost has simplified the pipeline overall arrangement of whole multichannel row thick liquid system moreover, has reduced the occupation space of pipeline. In addition, the communication position is arranged behind the second valve, so that the second valve can control the slurry discharge of the second slurry discharge pipeline independently.

Furthermore, a fourth valve is further installed on the second slurry discharging pipeline and is located behind the communication position of the third slurry discharging pipeline and the second slurry discharging pipeline.

The beneficial effects of the above technical scheme are that: through the rear installation fourth valve that is located third row thick liquid pipeline and second row thick liquid pipeline intercommunication position on the second row thick liquid pipeline to arrange the thick liquid through the fourth valve simultaneous control third row thick liquid pipeline and second row thick liquid pipeline, also when the valve on third row thick liquid pipeline or the second row thick liquid pipeline can't normally close, the row of thick liquid of two pipelines is blocked to accessible fourth valve.

Furthermore, a fourth valve is arranged behind the rear partition plate.

The beneficial effects of the above technical scheme are that: the fourth valve is arranged behind the rear partition plate to ensure that the fourth valve is positioned in the normal pressure environment, so that the fourth valve is convenient to overhaul and maintain.

Furthermore, the third row thick liquid pipeline is equipped with two, and two third row thick liquid pipelines all install with the second row thick liquid pipeline intercommunication of the left and right sides respectively on two third row thick liquid pipelines the third valve.

The beneficial effects of the above technical scheme are that: set up two third and arrange the thick liquid pipeline, not only can guarantee that a third arranges thick liquid pipeline when blockking up, arrange the thick liquid through another third and arrange the thick liquid pipeline, arrange thick liquid pipeline intercommunication through two third and arrange thick liquid pipelines with two second of the left and right sides respectively moreover, also simplified whole multichannel and arranged thick liquid system, reduced the occupation space of pipeline. In addition, third valves are arranged on the two third slurry discharging pipelines, so that the on-off of the slurry discharging of the two third slurry discharging pipelines can be controlled independently through the two third valves.

Furthermore, a main valve is also arranged on the main slurry discharge pipeline and used for controlling the slurry discharge of the whole multi-channel slurry discharge system to be switched on and off.

The beneficial effects of the above technical scheme are that: a main valve is arranged on the main slurry discharge pipeline, so that the slurry discharge on-off of the whole multi-channel slurry discharge system is controlled through the main valve, and the reliability of the slurry discharge on-off of the whole multi-channel slurry discharge system in an emergency is also ensured.

Further, the first valve, the second valve, the third valve and the main valve are all hydraulic valves.

The beneficial effects of the above technical scheme are that: the first valve, the second valve, the third valve and the main valve are set as hydraulic valves, so that the on-off of the slurry discharge of each pipeline can be controlled remotely conveniently through the hydraulic valves, and the hydraulic valves have the characteristics of small vibration, small noise, long service life and the like.

Furthermore, the two second slurry discharge pipelines are positioned at the left side and the right side above the first slurry discharge pipeline.

The beneficial effects of the above technical scheme are that: the second slurry discharge pipelines are arranged on the left side and the right side above the first slurry discharge pipelines so as to discharge the slurry in the slurry bin through the second slurry discharge pipelines when the bottom of the slurry bin is blocked by the residue soil, and further ensure the normal discharge of the slurry in the whole shield tunneling machine.

Furthermore, the multichannel pulp discharging system also comprises a grating, and the grating cover is arranged at the front side of the first pulp discharging pipeline.

The beneficial effects of the above technical scheme are that: because the first slurry discharge pipeline is used for discharging slurry during normal tunneling, the grid is arranged, and the grid cover is arranged on the front side of the main slurry discharge pipeline, so that dregs with large particle size can be prevented from entering the first slurry discharge pipeline to block the first slurry discharge pipeline, and the first slurry discharge pipeline can normally discharge slurry.

In order to achieve the purpose, the shield machine adopts the following technical scheme:

the utility model provides a shield constructs machine, includes shield constructs quick-witted blade disc, preceding baffle, back baffle and multichannel row thick liquid system, wherein, is the muddy water storehouse between shield constructs quick-witted blade disc and the preceding baffle, is the air cushion storehouse between preceding baffle and the back baffle, and the bottom of preceding baffle is equipped with the mud door, and the thick liquid system is arranged to the multichannel includes:

the main slurry discharge pipeline is arranged behind a rear partition plate of the shield machine, and a slurry discharge pump is installed on the main slurry discharge pipeline;

the first slurry discharge pipeline is arranged at the bottom of the rear partition plate and communicated with an air cushion bin of the shield tunneling machine, the first slurry discharge pipeline is communicated with the main slurry discharge pipeline, and a first valve is mounted on the first slurry discharge pipeline;

the multichannel arranges thick liquid system still includes:

the two second slurry discharge pipelines are arranged on the left side and the right side of a slurry door of the shield machine respectively and are provided with second valves;

the third slurry discharge pipeline is arranged at the bottom of the air cushion bin and is communicated with the air cushion bin, the third slurry discharge pipeline is communicated with the main slurry discharge pipeline, and a third valve is arranged on the third slurry discharge pipeline;

when the slurry discharging device is used, in a stratum where a cutter head of the shield tunneling machine is not easy to form mud cakes, a slurry door and a first valve are opened, a second valve and a third valve are closed, a slurry discharging pump is started, at the moment, slurry enters a first slurry discharging pipeline through the slurry door and the bottom of an air cushion bin in sequence, and then enters a main slurry discharging pipeline through the first slurry discharging pipeline to realize slurry discharging;

opening a third valve, closing the first valve and the second valve, and starting a slurry discharge pump under the working condition that the slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be bonded with mud cakes or a pipeline opening of the first slurry discharge pipeline is blocked, wherein slurry enters a main slurry discharge pipeline through the third slurry discharge pipeline to realize slurry discharge;

in a viscous stratum where a cutter head of the shield tunneling machine is easy to cake mud, when the cutter head of the shield tunneling machine rotates clockwise, a second valve on the left side of a mud valve is opened, a first valve, a third valve and a second valve on the right side are closed, a mud discharging pump is opened, and mud enters a main mud discharging pipeline through a second mud discharging pipeline on the left side at the moment to realize mud discharging; when the cutter head of the shield tunneling machine rotates anticlockwise, the second valve on the right side of the slurry door is opened, the first valve, the third valve and the second valve on the left side are closed, the slurry discharging pump is opened, and at the moment, slurry enters the main slurry discharging pipeline through the first slurry discharging pipeline on the right side to realize slurry discharging.

The beneficial effects of the above technical scheme are that: the invention adds a second slurry discharge pipeline and a third slurry discharge pipeline communicated with the air cushion bin on the basis of the original main slurry discharge pipeline, the original first slurry discharge pipeline and the original second slurry discharge pipeline, arranges two second slurry discharge pipelines on the left side and the right side of a slurry door of the shield tunneling machine, arranges the third slurry discharge pipeline at the bottom of the air cushion bin and communicated with the main slurry discharge pipeline, and arranges valves on the second slurry discharge pipeline and the third slurry discharge pipeline. When the multi-channel slurry discharging system is used, the multi-channel slurry discharging system not only can be suitable for slurry discharging of the slurry discharging system in the prior art under the condition of normal tunneling and slurry discharging delay caused by slag accumulation at the bottom of a slurry cabin, but also can solve the influence of different steering directions of the cutter head of the shield machine on slurry discharging of the slurry cabin through the second slurry discharging pipelines arranged at the left side and the right side of the slurry door, namely when the cutter head of the shield machine rotates clockwise, slag soil brought to the left side of the slurry cabin by the cutter head of the shield machine can be discharged along the second slurry discharging pipeline at the left side along with slurry; when the cutter head of the shield tunneling machine rotates anticlockwise, the residue soil brought to the right side of the muddy water bin by the cutter head of the shield tunneling machine can be discharged along the second slurry discharge pipeline on the right side along with the slurry; in addition, the third slurry discharge pipeline can also solve the problem of slurry discharge of the air cushion bin under the conditions that a slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be clogged with mud cakes or a pipeline opening of the first slurry discharge pipeline is blocked. The normal discharge of dregs in the multichannel slurry discharge system can be guaranteed, the construction efficiency is high, the use working condition of the multichannel slurry discharge system is increased, and the slurry discharge requirement of the shield tunneling machine under the complex and variable working condition is met.

Furthermore, the second valve is arranged in the air cushion bin, the third slurry discharge pipeline is communicated with the second slurry discharge pipeline, and the communication position of the third slurry discharge pipeline and the second slurry discharge pipeline is arranged behind the second valve and in the air cushion bin.

The beneficial effects of the above technical scheme are that: through arranging thick liquid pipeline with the third and communicate with the thick liquid pipeline is arranged to the second to communicate the position setting in the air cushion storehouse, not only can shorten the use length of thick liquid pipeline is arranged to the third like this, save the material of processing man-hour, reduce cost has simplified the pipeline overall arrangement of whole multichannel row thick liquid system moreover, has reduced the occupation space of pipeline. In addition, the communication position is arranged behind the second valve, so that the second valve can control the slurry discharge of the second slurry discharge pipeline independently.

Furthermore, a fourth valve is further installed on the second slurry discharging pipeline and is located behind the communication position of the third slurry discharging pipeline and the second slurry discharging pipeline.

The beneficial effects of the above technical scheme are that: through the rear installation fourth valve that is located third row thick liquid pipeline and second row thick liquid pipeline intercommunication position on the second row thick liquid pipeline to arrange the thick liquid through the fourth valve simultaneous control third row thick liquid pipeline and second row thick liquid pipeline, also when the valve on third row thick liquid pipeline or the second row thick liquid pipeline can't normally close, the row of thick liquid of two pipelines is blocked to accessible fourth valve.

Further, a fourth valve is arranged behind the rear partition plate.

The beneficial effects of the above technical scheme are that: the fourth valve is arranged behind the rear partition plate to ensure that the fourth valve is positioned in the normal pressure environment, so that the fourth valve is convenient to overhaul and maintain.

Furthermore, the third row thick liquid pipeline is equipped with two, and two third row thick liquid pipelines all install with the second row thick liquid pipeline intercommunication of the left and right sides respectively on two third row thick liquid pipelines the third valve.

The beneficial effects of the above technical scheme are that: set up two third and arrange the thick liquid pipeline, not only can guarantee that a third arranges thick liquid pipeline when blockking up, arrange the thick liquid through another third and arrange the thick liquid pipeline, arrange thick liquid pipeline intercommunication through two third and arrange thick liquid pipelines with two second of the left and right sides respectively moreover, also simplified whole multichannel and arranged thick liquid system, reduced the occupation space of pipeline. In addition, third valves are arranged on the two third slurry discharging pipelines, so that the on-off of the slurry discharging of the two third slurry discharging pipelines can be controlled independently through the two third valves.

Furthermore, a main valve is also arranged on the main slurry discharge pipeline and used for controlling the slurry discharge of the whole multi-channel slurry discharge system to be switched on and off.

The beneficial effects of the above technical scheme are that: a main valve is arranged on the main slurry discharge pipeline, so that the slurry discharge on-off of the whole multi-channel slurry discharge system is controlled through the main valve, and the reliability of the slurry discharge on-off of the whole multi-channel slurry discharge system in an emergency is also ensured.

Further, the first valve, the second valve, the third valve and the main valve are all hydraulic valves.

The beneficial effects of the above technical scheme are that: the first valve, the second valve, the third valve and the main valve are set as hydraulic valves, so that the on-off of the slurry discharge of each pipeline can be controlled remotely conveniently through the hydraulic valves, and the hydraulic valves have the characteristics of small vibration, small noise, long service life and the like.

Furthermore, the two second slurry discharge pipelines are positioned at the left side and the right side above the first slurry discharge pipeline.

The beneficial effects of the above technical scheme are that: the second slurry discharge pipelines are arranged on the left side and the right side above the first slurry discharge pipelines so as to discharge the slurry in the slurry bin through the second slurry discharge pipelines when the bottom of the slurry bin is blocked by the residue soil, and further ensure the normal discharge of the slurry in the whole shield tunneling machine.

Furthermore, the multichannel pulp discharging system also comprises a grating, and the grating cover is arranged at the front side of the first pulp discharging pipeline.

The beneficial effects of the above technical scheme are that: because the first slurry discharge pipeline is used for discharging slurry during normal tunneling, the grid is arranged, and the grid cover is arranged on the front side of the main slurry discharge pipeline, so that dregs with large particle size can be prevented from entering the first slurry discharge pipeline to block the first slurry discharge pipeline, and the first slurry discharge pipeline can normally discharge slurry.

Drawings

FIG. 1 is a side view of a shield machine of the present invention;

FIG. 2 is a top view of the shield machine of the present invention;

FIG. 3 is a front view of a rear bulkhead in the shield tunneling machine of the present invention;

FIG. 4 is a diagram of a pulp discharge path of the multi-channel pulp discharge system in the first mode;

FIG. 5 is a diagram of the discharge path of the multi-channel discharge system in the second mode;

FIG. 6 is a diagram of another slurry discharge path of the multi-channel slurry discharge system of the present invention in the second mode;

FIG. 7 is a diagram of a discharge path of a multi-channel discharge system according to the present invention when a cutter head of a shield tunneling machine rotates clockwise in a third mode;

fig. 8 is a discharge path diagram of the multi-channel discharge system in the third mode when the cutter head of the shield tunneling machine rotates counterclockwise.

In the figure: 1. a cutter head of the shield tunneling machine; 2. a front bulkhead; 3. a rear bulkhead; 4. a muddy water bin; 5. an air cushion bin; 6. a mud gate; 7. a grid; 8. a primary slurry discharge line; 9. a main valve; 10. a slurry discharging pump; 11. a first slurry discharge line; 12. a first valve; 13. a second slurry discharge line; 14. a second valve; 15. a third slurry discharge pipeline; 16. a third valve; 17. and a fourth valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The shield machine comprises a shield machine cutter head 1, a front partition plate 2 and a rear partition plate 3, wherein a mud water bin 4 is arranged between the shield machine cutter head 1 and the front partition plate 2, an air cushion bin 5 is arranged between the front partition plate 2 and the rear partition plate 3, and the bottom of the front partition plate 2 is provided with a mud door 6.

The shield machine further comprises a multi-channel slurry discharging system, as shown in fig. 1 and fig. 2, the multi-channel slurry discharging system comprises a main slurry discharging pipeline 8, the main slurry discharging pipeline 8 is arranged behind the rear partition plate 3, a main valve 9 and a slurry discharging pump 10 are installed on the main slurry discharging pipeline 8, and the main valve 9 is used for controlling the slurry discharging of the whole multi-channel slurry discharging system to be switched on and off.

As shown in fig. 1, 2 and 3, the multichannel pulp discharging system further includes a first pulp discharging pipeline 11, the first pulp discharging pipeline 11 is disposed at the bottom of the rear partition plate 3 (shown in fig. 3), the first pulp discharging pipeline 11 is communicated with the air cushion bin 5, the first pulp discharging pipeline 11 extends backwards and is communicated with the main pulp discharging pipeline 8, a first valve 12 is mounted on the first pulp discharging pipeline 11, and the first valve 12 is located behind the rear partition plate 3. In addition, the multichannel pulp discharging system also comprises a grating 7, and the grating 7 is covered on the front side of the first pulp discharging pipeline 11 so as to prevent dregs with large particle size from entering the first pulp discharging pipeline 11 and blocking the first pulp discharging pipeline 11.

As shown in fig. 1, 2 and 3, the multichannel slurry discharging system further includes two second slurry discharging pipelines 13, two second slurry discharging pipelines 13 are disposed on the first slurry discharging pipeline 13, both the two second slurry discharging pipelines 13 are disposed at the bottom of the front partition 2 and are communicated with the slurry cabin 4, and the two second slurry discharging pipelines 13 are further disposed on the left and right sides above the slurry door 6 and the left and right sides above the first slurry discharging pipeline 11, respectively (shown in fig. 3). The two second slurry discharging pipelines 13 extend backwards and penetrate through the rear partition plate 3 to be communicated with the main slurry discharging pipeline 8, the communication positions are located on the front side of the main valve 9, a second valve 14 and a fourth valve 17 are sequentially arranged on the two second slurry discharging pipelines 13 from front to back, the second valve 14 is located in the air cushion bin 5, and the fourth valve 17 is located behind the rear partition plate 3.

As shown in fig. 1 and 2, the multichannel pulp discharging system further includes two third pulp discharging pipelines 15, two third pulp discharging pipelines 15 are installed on the two third pulp discharging pipelines 15, the two third pulp discharging pipelines 15 are respectively communicated with the two second pulp discharging pipelines 13 on the left and right sides, and the communication position is located behind the second valve 14 and in the air cushion chamber 5.

In addition, the first valve 12, the second valve 14, the third valve 16, the fourth valve 17, and the main valve 9 are all hydraulic valves.

The working principle of the multi-channel slurry discharge system is as follows:

in the first mode, namely in a stratum where a cutter head of the shield tunneling machine is not easy to form mud cakes, as shown in fig. 4, a mud door 6, a first valve 12 and a main valve 9 are opened, a mud discharging pump 10 is started, the rest of the mud pumps are all closed, at the moment, mud enters a first mud discharging pipeline 11 after sequentially passing through the mud door 6, the bottom of an air cushion bin 5 and a grid 7, and then enters a main mud discharging pipeline 8 through the first mud discharging pipeline 11 to realize mud discharging.

In a second mode, namely under the working conditions that a slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be subjected to mud cake formation or a pipeline opening of a first slurry discharge pipeline is blocked, one mode is as shown in fig. 5, a third valve 16 and a fourth valve 17 on the left side (the left side is seen from the front to the back in front of the cutter head of the shield tunneling machine) are opened, a main valve 9 and a slurry discharge pump 10 are opened, the rest is closed, and at the moment, slurry enters a main slurry discharge pipeline 8 through a third slurry discharge pipeline 15 and a second slurry discharge pipeline 13 on the left side in sequence to discharge the slurry; in another mode, as shown in fig. 6, the third valve 16 and the fourth valve 17 on the right side (the right side is seen from the front to the back in front of the shield tunneling machine cutterhead) are opened, the main valve 9 and the slurry discharge pump 10 are opened, the rest is closed, and then the slurry enters the main slurry discharge pipeline 8 through the third slurry discharge pipeline 15 and the second slurry discharge pipeline 13 on the right side to discharge the slurry.

In a third mode, in a viscous stratum where the shield tunneling machine cutterhead 1 is prone to mud cake formation, as shown in fig. 7, when the shield tunneling machine cutterhead 1 rotates clockwise (clockwise means that the station is in front of the shield tunneling machine cutterhead and is seen from front to back), the second valve 14 and the fourth valve 17 on the left side are opened, the main valve 9 and the slurry discharge pump 10 are opened, and the rest are closed, at this time, slurry enters the main slurry discharge pipeline 8 through the second slurry discharge pipeline 13 on the left side to realize slurry discharge; as shown in fig. 8, when the shield tunneling machine cutterhead 1 rotates counterclockwise (counterclockwise refers to the forward direction and backward direction of the shield tunneling machine cutterhead), the second valve 14 and the fourth valve 17 on the right side are opened, the main valve 9 and the slurry discharge pump 10 are opened, the rest are closed, and at this time, slurry enters the main slurry discharge pipeline 8 through the second slurry discharge pipeline 13 on the right side to realize slurry discharge.

When the multi-channel slurry discharge system is used, the multi-channel slurry discharge system not only can be suitable for slurry discharge of the slurry discharge system in the prior art under the condition of normal tunneling and in the process of delayed discharge caused by slag accumulation at the bottom of a slurry cabin, but also can solve the influence of different steering directions of a cutter head of a shield machine on slurry discharge of the slurry cabin through second slurry discharge pipelines arranged at the left side and the right side of a slurry door, namely when the cutter head of the shield machine rotates clockwise, residue soil brought to the left side of the slurry cabin by the cutter head of the shield machine can be discharged along the second slurry discharge pipeline at the left side along with slurry; when the cutter head of the shield tunneling machine rotates anticlockwise, the residue soil brought to the right side of the muddy water bin by the cutter head of the shield tunneling machine can be discharged along the second slurry discharge pipeline on the right side along with the slurry; in addition, the third slurry discharge pipeline can also solve the problem of slurry discharge of the air cushion bin under the conditions that a slurry door cannot be closed and a cutter head of the shield tunneling machine is easy to be clogged with mud cakes or a pipeline opening of the first slurry discharge pipeline is blocked. The normal discharge of dregs in the multichannel slurry discharge system can be guaranteed, the construction efficiency is high, the use working condition of the multichannel slurry discharge system is increased, and the slurry discharge requirement of the shield tunneling machine under the complex and variable working condition is met.

In other embodiments of the shield tunneling machine, the first valve, the second valve, the third valve, the fourth valve, and the main valve may be not hydraulic valves, but pneumatic valves or electric valves.

In other embodiments of the shield tunneling machine, the multi-channel slurry discharge system may not include a grate, i.e., the front side of the first slurry discharge line is not covered with a grate, and in this case, slurry directly enters the first slurry discharge line from the bottom of the air cushion silo.

In other embodiments of the shield tunneling machine, the two second slurry discharge pipelines may not be located on the left and right sides above the first slurry discharge pipeline, but on the left and right sides of the same horizontal line of the first slurry discharge pipeline.

In other embodiments of the shield tunneling machine, the main slurry discharge pipeline may not be provided with a main valve, and the slurry discharge pipelines individually control the slurry discharge to be on or off through valves on the pipelines.

In other embodiments of the shield tunneling machine, the third slurry discharge pipeline may not be provided with two, but may be provided with one.

In other embodiments of the shield tunneling machine, the fourth valve may not be disposed behind the rear partition, but may be disposed in the air cushion chamber, but behind a place where the third slurry discharge pipeline is communicated with the second slurry discharge pipeline.

In other embodiments of the shield tunneling machine, the fourth valve may not be installed, and at this time, the third slurry discharge pipeline and the second slurry discharge pipeline independently control the on-off of slurry discharge through valves on the respective pipelines.

In other embodiments of the shield tunneling machine, the third slurry discharge line may not communicate with the second slurry discharge line, in which case the third slurry discharge line alone extends rearwardly through the rear bulkhead and communicates with the main slurry discharge line.

The embodiment of the multi-channel pulp discharge system in the invention is as follows: the specific structure of the multi-channel slurry discharge system is the same as that of the multi-channel slurry discharge system in the shield machine embodiment, and the detailed description is omitted here.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.