Cleaning device and shield machine

Abstract

The utility model discloses a kind of cleaning device and shield machine, wherein cleaning device includes: water washing mechanism, including water pump and inlet pipe, one end of inlet pipe is butt joint with water pump;Air blowing mechanism, including air compressor and inlet pipe, one end of inlet pipe is butt joint with air compressor;Flow guide mechanism, including three-way valve and output pipe, output pipe includes main pipe and two flow guide pipes, main pipe, inlet pipe and inlet pipe are respectively butt joint with three-way valve, two roots flow guide pipe are symmetrically arranged at the two sides of main pipe, two flow guide pipes are butt joint with main pipe, the end of flow guide pipe away from main pipe is bent upwards. By opening two first valve bodies simultaneously, flushing inside air cushion bin simultaneously, by closing one of flow guide pipes, only one side of flow guide pipe sprays water flow or air flow into air cushion bin, directly flushing slag, and one-side flushing can reduce the loss of pressure, improve flushing effect, avoid slag accumulation in air cushion bin bottom corner.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, and in particular to a cleaning device and a tunnel boring machine. Background Technology

[0002] Air-cushion slurry balance shield machines have become an increasingly popular choice for tunnel construction due to their excellent safety and clean construction environment. To better adapt to strata prone to mud accumulation, the air-cushion slurry balance shield machine has been optimized and improved by moving the main slurry discharge port forward and sealing the bottom air cushion chamber, gradually forming the current air-cushion direct-discharge slurry balance shield machine. However, the air cushion chamber of the air-cushion direct-discharge slurry balance shield machine has an angle, which makes it more prone to soil accumulation. If it is not flushed in time, the soil accumulation may bury the bottom of the connecting pipe, preventing the air-cushion direct-discharge slurry balance shield machine from transmitting pressure and liquid level through the connecting pipe, causing large pressure fluctuations, and potentially posing risks such as ground penetration and face instability. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a cleaning device and a tunnel boring machine that can flush both sides or one side of the bottom angle of the air cushion chamber to prevent soil from accumulating in the bottom angle of the air cushion chamber.

[0004] The cleaning device according to the first aspect of the present invention includes: a water washing mechanism, an air blowing mechanism, and a flow guiding mechanism; the water washing mechanism includes a water pump and an inlet pipe, one end of the inlet pipe being connected to the water pump; the air blowing mechanism includes an air compressor and an air inlet pipe, one end of the air inlet pipe being connected to the air compressor; the flow guiding mechanism includes a three-way valve and an output pipe, the output pipe including a main pipe and two flow guiding pipes, the main pipe, the inlet pipe and the air inlet pipe being connected to the three-way valve respectively, the two flow guiding pipes being symmetrically arranged on both sides of the main pipe, both flow guiding pipes being connected to the main pipe, and the end of the flow guiding pipe away from the main pipe being bent upward so that the clean water or airflow sprayed from the flow guiding pipe can flow along the side wall of the air cushion chamber.

[0005] In some embodiments of this utility model, both of the guide pipes are provided with a first valve.

[0006] In some embodiments of this utility model, the water inlet pipe is provided with a second valve, and the air inlet pipe is provided with a third valve.

[0007] In some embodiments of this utility model, the air blowing mechanism further includes an air storage tank, which is disposed between the air inlet pipe and the air compressor, and the air compressor is connected to the air inlet pipe through the air storage tank.

[0008] According to the second aspect of the present invention, the tunnel boring machine includes the cleaning device described in the first aspect of the present invention. The tunnel boring machine is provided with a mud-water chamber and an air cushion chamber. The mud-water chamber and the air cushion chamber are arranged sequentially from the front end to the rear end. The guide pipe is connected to the air cushion chamber.

[0009] In some embodiments of this utility model, an exhaust valve is provided at the top of the mud and water tank.

[0010] Compared with the prior art, the cleaning device and tunnel boring machine of this utility model embodiment have the following advantages: the water pump delivers water to the three-way valve through the water inlet pipe, and the air compressor delivers air to the three-way valve through the air inlet pipe. The three-way valve sends the delivered water and air through the main pipe and the guide pipe. The guide pipe is controlled by the first valve body to open both first valve bodies at the same time, and the air cushion chamber is flushed at the same time. By closing one of the guide pipes, only one side of the guide pipe sprays water or air into the air cushion chamber to directly flush the slag. The single-sided flushing can reduce pressure loss and improve the flushing effect. The water or air flows along the side wall of the air cushion chamber to flush the inside of the air cushion chamber, reducing the influence of the side wall of the air cushion chamber on the flushing speed of the water or air. The water or air can also flow from one side of the air cushion chamber along the side wall of the air cushion chamber to the other side of the air cushion chamber to flush the angle of the bottom of the air cushion chamber, and prevent the slag from accumulating in the bottom angle of the air cushion chamber. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a cleaning device according to a first aspect embodiment of the present invention; Figure 2 This is a schematic diagram of the double-sided rinsing of the cleaning device according to the first aspect of the present invention; Figure 3 This is a schematic diagram of a cleaning device for unilateral rinsing according to a first aspect embodiment of the present invention; Figure 4 This is a schematic diagram of a tunnel boring machine according to a second aspect embodiment of the present invention.

[0012] Explanation of reference numerals in the attached figures: Water pump 111; water inlet pipe 112; second valve 113; air compressor 121; air inlet pipe 122; third valve 123; air tank 124; three-way valve 131; main pipe 132; guide pipe 133; first valve 134; air cushion chamber 210; connecting pipe 220; mud and water chamber 230; exhaust valve 231. Detailed Implementation

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0014] like Figure 1 As shown, the cleaning device of the first aspect of this utility model includes: a water washing mechanism, an air blowing mechanism, and a flow guiding mechanism; the water washing mechanism includes a water pump 111 and a water inlet pipe 112, one end of the water inlet pipe 112 being connected to the water pump 111; the air blowing mechanism includes an air compressor 121 and an air inlet pipe 122, one end of the air inlet pipe 122 being connected to the air compressor 121; the flow guiding mechanism includes a three-way valve 131 and an output pipe, the output pipe including a main pipe 132 and two flow guiding pipes 133, the main pipe 132, the water inlet pipe 112 and the air inlet pipe 122 being connected to the three-way valve 131 respectively, the two flow guiding pipes 133 being symmetrically arranged on both sides of the main pipe 132, both flow guiding pipes 133 being connected to the main pipe 132, the end of the flow guiding pipe 133 away from the main pipe 132 being bent upward so that the clean water or airflow sprayed from the flow guiding pipe 133 can flow along the side wall of the air cushion chamber 210.

[0015] Water pump 111 delivers water to three-way valve 131 through water inlet pipe 112, and air compressor 121 delivers airflow to three-way valve 131 through air inlet pipe 122. Three-way valve 131 sends the delivered water and airflow through main pipe 132 and guide pipe 133. The guide pipe 133 is opened and closed by first valve body 134, and both first valve bodies 134 are opened at the same time to flush the bottom angle on both sides. The water or airflow on both sides converges in the air cushion chamber and flushes the side wall inside the air cushion chamber 210, cleaning the air cushion chamber 210. By closing one of the guide pipes 133, water or air is sprayed into the air cushion chamber 210 from only one side of the guide pipe 133, directly flushing the slag accumulated in the bottom corner. The water or air flows along the side wall of the air cushion chamber 210 to flush the interior of the air cushion chamber 210, reducing the impact on the flushing speed of the water or air. The water or air can also flow along the side wall from one side of the air cushion chamber 210 to the other side, flushing the bottom corner of the air cushion chamber 210 and the area around the opening of the guide pipe 133. The single-sided flushing can effectively reduce pressure loss, effectively flush the slag, and prevent the slag from accumulating in the bottom corner of the air cushion chamber 210.

[0016] Understandably, referring to Figure 1 Both guide pipes 133 are equipped with a first valve 134. By setting the first valve 134, both guide pipes 133 can be opened or closed simultaneously. When both guide pipes 133 are opened simultaneously, the water flow or air flow simultaneously flushes the side walls on both sides of the air cushion chamber 210. After flushing, both first valves 134 are closed simultaneously to avoid affecting the pressure inside the air cushion chamber 210. Alternatively, only one of the first valves 134 can be opened, and only one guide pipe 133 can be opened to flush the side wall inside the air cushion chamber 210 on one side, focusing on flushing the bottom corner of the air cushion chamber 210, effectively dispersing the slag in the bottom corner and preventing slag accumulation.

[0017] Understandably, the water inlet pipe 112 is equipped with a second valve 113, and the air inlet pipe 122 is equipped with a third valve 123. By setting the second valve 113 and the third valve 123, when the second valve 113 is opened and the third valve 123 is closed, water flow is used to flush the inside of the air cushion chamber 210, and when the third valve 123 is opened and the second valve 113 is closed, airflow is used to flush the inside of the air cushion chamber 210.

[0018] Understandably, the air blowing mechanism also includes an air storage tank 124, which is located between the air inlet pipe 122 and the air compressor 121. The air compressor 121 is connected to the air inlet pipe 122 through the air storage tank 124. By connecting the air storage tank 124, the stability of the delivered air pressure can be improved, air pressure fluctuations can be reduced, and the airflow can be kept stable to steadily flush the inside of the air cushion chamber 210.

[0019] The tunnel boring machine according to a second aspect of this utility model includes the cleaning device of the first aspect of this utility model. The tunnel boring machine is equipped with a mud-water chamber 230 and an air cushion chamber 210, which are arranged sequentially from the front end to the rear end. One bent end of the guide pipe 133 extends into the air cushion chamber 210, so that the guide pipe 133 is connected to the air cushion chamber 210. An exhaust valve 231 is provided at the top of the mud-water chamber 230. A connecting pipe 220 communicating with the mud-water chamber 230 is provided in the air cushion chamber 210. Through the connecting pipe 220, the pressure in the mud-water chamber 230 can be adjusted through the air cushion chamber 210 to keep the pressure in the mud-water chamber 230 stable, thereby ensuring the stability of the tunnel face. When using airflow for flushing, air may enter the mud and water chamber 230 through the connecting pipe 220, resulting in gas in the mud and water chamber 230, causing an increase in air pressure, affecting the stability of the working face. If the air tightness of the working face is poor, it may form a formation channel, leading to risks such as slurry leakage and depressurization. Therefore, during the airflow flushing process, the exhaust valve 231 should be opened simultaneously to promptly discharge the gas in the mud and water chamber 230 and maintain a full chamber state.

[0020] Water pump 111 delivers water to three-way valve 131 through inlet pipe 112, and air compressor 121 delivers airflow to three-way valve 131 through inlet pipe 122. Three-way valve 131 sends the delivered water and airflow through main pipe 132 and guide pipe 133. The first valve body 134 controls the opening and closing of guide pipe 133. By closing one of the guide pipes 133, only one guide pipe 133 sprays water or airflow into the air cushion chamber 210. The water or airflow flows along the side wall of the air cushion chamber 210 to flush the inside of the air cushion chamber 210, reducing the impact on the flushing speed of the water or airflow. The water or airflow flows from one side of the air cushion chamber 210 along the side wall of the air cushion chamber 210 to the other side of the air cushion chamber 210, flushing the bottom corner of the air cushion chamber 210 and preventing soil from accumulating at the bottom corner of the air cushion chamber 210.

[0021] The working process of this utility model is as follows: When using water flow to flush the inside of the air cushion chamber 210, the second valve body 113 is opened, and the two first valve bodies 134 are opened simultaneously. The water pump 111 sprays water from the two guide pipes 133 to flush the inside of the air cushion chamber 210. Only one of the first valve bodies 134 is opened, and the water flow sprayed from the guide pipe 133 flows along the side wall of the air cushion chamber 210 to the bottom corner on the other side, flushing the soil at the bottom corner of the air cushion chamber 210. By opening either of the two first valve bodies 134 individually, the soil at the bottom corner on both sides of the air cushion chamber 210 can be flushed by water flow. Similarly, when using airflow to flush the inside of the air cushion chamber 210, the third valve body 123 is opened, and the two first valve bodies 134 are opened simultaneously, so that airflow is sprayed from the guide pipe 133 to flush the inside of the air cushion chamber 210. Only one of the two first valve bodies 134 is opened, and the soil at the bottom corner on both sides of the air cushion chamber 210 can be flushed by airflow.

[0022] In summary, this utility model embodiment provides a cleaning device and a tunnel boring machine. Through the outwardly bent guide pipe 133, the water or air jet sprayed from the guide pipe 133 can flush the interior of the air cushion chamber 210 along the arc-shaped side wall of the air cushion chamber 210, and reduce the impact on the flow rate of the water or air, ensuring that the water or air can effectively flush the slag at the bottom corner of the air cushion chamber 210, disperse the slag, and prevent the slag from accumulating.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for ordinary counting personnel in this technical field, several improvements and substitutions can be made without departing from the counting principle of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A cleaning device, characterized in that, Including: A water washing mechanism includes a water pump and a water inlet pipe, one end of which is connected to the water pump; The air blowing mechanism includes an air compressor and an air inlet pipe, one end of which is connected to the air compressor; The flow guiding mechanism includes a three-way valve and an output pipe. The output pipe includes a main pipe and two flow guiding pipes. The main pipe, the water inlet pipe, and the air inlet pipe are respectively connected to the three-way valve. The two flow guiding pipes are symmetrically arranged on both sides of the main pipe and are connected to the main pipe. The end of the flow guiding pipe away from the main pipe is bent upward so that the clean water or airflow sprayed from the flow guiding pipe can flow along the side wall of the air cushion chamber.

2. The cleaning device according to claim 1, characterized in that, Both of the aforementioned guide pipes are equipped with a first valve.

3. The cleaning device according to claim 1, characterized in that, The water inlet pipe is equipped with a second valve, and the air inlet pipe is equipped with a third valve.

4. The cleaning device according to claim 1, characterized in that, The air blowing mechanism also includes an air storage tank, which is disposed between the air inlet pipe and the air compressor, and the air compressor is connected to the air inlet pipe through the air storage tank.

5. A tunnel boring machine, characterized in that, The device includes the cleaning apparatus according to any one of claims 1 to 4, wherein the tunnel boring machine is provided with a mud and water chamber and an air cushion chamber, the mud and water chamber and the air cushion chamber are arranged sequentially from the front end to the rear end, and the guide pipe is connected to the air cushion chamber.

6. The tunnel boring machine according to claim 5, characterized in that, An exhaust valve is installed at the top of the mud and water tank.

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