Dust sucking and falling system for construction of cantilever heading machine

Abstract

The utility model discloses a dust suction and fall system for construction of a cantilever heading machine. The dust suction and fall system comprises a dust suction water tank, a dust suction pipeline and a water supply and return unit, a dust collection water tank is fixedly arranged at the rear part of the cantilever heading machine; a dust collection pipeline is arranged at the heading end of the cantilever heading machine; the dust collection water tank filters and adsorbs dust and particles and discharges the dust and particles out of a construction position in a slurry state, the air inlet end of the dust collection water tank is communicated with the dust collection pipeline, the exhaust end of the dust collection water tank is communicated with the atmosphere, and the water supply and return ends of the dust collection water tank are communicated with the water supply and return unit. According to the system, the function of sucking while excavating in the excavation construction process of the cantilever heading machine can be achieved, waiting for automatic dust settling is not needed, the construction efficiency is effectively improved, and the dust falling effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment and relates to a dust suction and reduction system for cantilever tunneling machine construction. Background Art

[0002] Existing dust reduction equipment widely used in construction sites uses the method of sprinkling water or spraying water mist into the air to reduce dust. The water adsorbs the dust in the air and on the ground, making the dust stick together and difficult to rise due to its weight, thereby achieving the effect of dust reduction. However, as the water evaporates, the adhered dust will still rise and diffuse in the air after drying;

[0003] Especially in tunnel construction with special conditions, cantilevered tunnel boring machines are required for excavation. During the excavation process of the cantilevered tunnel boring machine, the rock and soil are broken, falling and piled up, and the machine needs to be stopped and cleaned from time to time, which can easily cause a lot of dust on the working surface, leading to slow construction progress, long ventilation and smoke exhaust time, and long connection time between each process.

[0004] In summary, how to reduce dust pollution on the construction surface during the construction of the cantilever tunnel boring machine while digging and sucking has become a technical problem that needs to be urgently solved by people in this field. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and propose a dust suction and reduction system for cantilever tunneling machine construction. The system can realize the function of suction as the cantilever tunneling machine is digging and constructing, without waiting for the dust to settle automatically, thereby effectively improving the construction efficiency and ensuring the dust reduction effect.

[0006] A dust suction and reduction system for cantilever tunnel boring machine construction, the dust suction and reduction system comprising a dust suction water tank, a dust suction pipe and a water supply and return unit; the dust suction water tank is fixedly arranged at the rear of the cantilever tunnel boring machine, and the dust suction pipe is arranged at the tunneling end of the cantilever tunnel boring machine; the dust suction water tank filters the adsorbed dust and particles and discharges them in the form of mud to the construction site, the air inlet end of the dust suction water tank is connected to the dust suction pipe, the exhaust end of the dust suction water tank is connected to the atmosphere, and the supply and return water ends of the dust suction water tank are connected to the water supply and return unit.

[0007] Preferably, an exhaust port is opened on one side of the top of the vacuum water tank, and a water inlet is opened on the other side; a slurry discharge port is opened at the bottom of the vacuum water tank near the exhaust port, and an air inlet is opened at the bottom of the vacuum water tank near the water inlet; and an isolation plate is fixedly provided on the inner wall of the vacuum water tank to separate the upper cavity and the lower cavity of the vacuum water tank.

[0008] Preferably, an air-water channel is left between one side edge of the isolation plate near the water inlet and the side wall of the dust collection water tank, and the other three edges of the isolation plate are respectively sealed and fixed to the inner wall of the dust collection water tank, and the top and bottom surfaces of the isolation plate are both made into slopes inclined toward the horizontal center line of the dust collection water tank on the side of the water inlet.

[0009] Preferably, the water supply and return unit includes a high-pressure water pipe entering the hole, a mud pipe and a mud storage pool; the high-pressure water pipe entering the hole is connected to the water inlet of the vacuum water tank; the mud pipe is respectively connected to the slurry discharge port of the vacuum water tank and the mud storage pool.

[0010] The advantages and technical effects of the utility model are:

[0011] The utility model discloses a dust suction and reduction system for cantilever tunnel boring machine construction. The dust suction and reduction system performs gas-liquid contact exchange through a dust suction water tank, and absorbs dust at the construction position of the tunneling surface in real time as the cantilever tunnel boring machine is under construction. During dust filtering, the liquid cavity (i.e., the lower cavity) and the air cavity (i.e., the upper cavity) inside the dust suction water tank are isolated by an isolation plate, and the slope on the upper surface of the isolation plate is used to discharge liquid to the air-water channel to prevent water from being discharged from the exhaust port, and the slope on the lower surface of the isolation plate is used to exhaust air to the air-water channel to prevent air bubbles from accumulating at the root of the isolation plate, i.e., in the liquid cavity. Thus, gas-liquid contact exchange is achieved in the liquid cavity, so that dust is absorbed and melted into the water in the liquid cavity to form mud, which is finally discharged to the mud storage pool through the slurry discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of system connection of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the dust suction water tank in the utility model;

[0014] In the figure: 1-dust suction pipe; 2-cantilever tunneling machine; 3-dust suction water tank; 4-high-pressure water pipe for entering the hole; 5-mud pipe; 6-mud storage tank; 7-water inlet; 8-upper cavity; 9-isolation plate; 10-exhaust port; 11-slurry discharge port; 12-lower cavity; 13-slope; 14-air inlet. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] The utility model discloses a dust suction and reduction system for cantilever tunnel boring machine construction, the dust suction and reduction system comprises a dust suction water tank 3, a dust suction pipe 1 and a water supply and return unit; a dust suction water tank is fixedly arranged at the rear of the cantilever tunnel boring machine 2, and a dust suction pipe is arranged at the tunneling end of the cantilever tunnel boring machine; the dust suction water tank filters the adsorbed dust and particles and discharges them out of the construction site in the form of mud, the air inlet end of the dust suction water tank is connected to the dust suction pipe, the exhaust end of the dust suction water tank is connected to the atmosphere, and the supply and return water ends of the dust suction water tank are connected to the water supply and return unit.

[0018] Preferably, an exhaust port 10 is opened on one side of the top of the vacuum water tank, and a water inlet 7 is opened on the other side; a slurry discharge port 11 is opened at the bottom of the vacuum water tank near the exhaust port, and an air inlet 14 is opened at the bottom of the vacuum water tank near the water inlet; and an isolation plate 9 is fixedly provided on the inner wall of the vacuum water tank to separate the upper cavity 8 and the lower cavity 12 of the vacuum water tank.

[0019] Preferably, an air-water channel is left between one side edge of the isolation plate near the water inlet and the side wall of the dust collection water tank, and the other three edges of the isolation plate are respectively sealed and fixed to the inner wall of the dust collection water tank, and the top and bottom surfaces of the isolation plate are both made into slopes 13 inclined toward the horizontal center line of the dust collection water tank on the side of the water inlet.

[0020] Preferably, the water supply and return unit includes a high-pressure water pipe 4 for entering the cave, a mud pipe 5 and a mud storage pool 6; the high-pressure water pipe for entering the cave is connected to the water inlet of the vacuum water tank; the mud pipe is respectively connected to the slurry discharge port of the vacuum water tank and the mud storage pool.

[0021] In order to more clearly illustrate the specific implementation of the utility model, an embodiment is provided below:

[0022] The utility model is a dust suction and reduction system for cantilever tunneling machine construction, which has the advantages of simple construction process, safety, economy, practicality, and can be improved and installed on existing equipment. Specifically:

[0023] 1. A dust suction device is installed on the rear side of the cantilever tunneling machine cab, which is divided into a dust suction motor, an air pump and a dust suction water tank; the dust suction motor is arranged at the air inlet position, and the air pump is arranged at the exhaust port position, and both are mature products in the existing technology;

[0024] 2. The top of the vacuum tank has a water inlet, the side of the tail has a slurry outlet, and the bottom of the other side has an air inlet connected to the vacuum pipe. The vacuum pipe is a hose that extends to the bottom of the boring machine drill bit to facilitate dust absorption.

[0025] 3. The adsorbed dust is settled by high-pressure water at the water inlet, passes into the mud pipe through the slurry discharge port, and finally discharged into the mud storage pool outside the cave, which is convenient for centralized treatment of dusty mud outside the cave.

[0026] The utility model discloses a dust suction and reduction system for cantilever tunneling machine construction, which can effectively shorten the process connection time, improve the construction efficiency, purify the environment of each working surface, and ensure the safety of construction.

[0027] Finally, all the parts not fully described in the present invention adopt mature products and mature technical means in the prior art.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in the embodiments or examples of the utility model.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dust suction and reduction system for cantilever tunneling machine construction, characterized in that: The dust suction and dust reduction system includes a dust suction water tank, a dust suction pipe and a water supply and return unit; the dust suction water tank is fixedly arranged at the rear of the cantilever tunneling machine, and the dust suction pipe is arranged at the tunneling end of the cantilever tunneling machine; the dust suction water tank filters the adsorbed dust and particles and discharges them from the construction site in the form of mud, the air inlet end of the dust suction water tank is connected to the dust suction pipe, the exhaust end of the dust suction water tank is connected to the atmosphere, and the supply and return water ends of the dust suction water tank are connected to the water supply and return unit.

2. The dust suction and reduction system for cantilever tunneling machine construction according to claim 1 is characterized in that: An exhaust port is provided on one side of the top of the dust suction water tank, and a water inlet is provided on the other side; a slurry discharge port is provided at the bottom of the dust suction water tank near the exhaust port, and an air inlet is provided at the bottom of the dust suction water tank near the water inlet; and an isolation plate is fixedly provided on the inner wall of the dust suction water tank to separate the upper cavity and the lower cavity of the dust suction water tank.

3. The dust suction and reduction system for cantilever tunneling machine construction according to claim 2 is characterized in that: An air-water channel is left between the edge of one side of the isolation plate close to the water inlet and the side wall of the dust suction water tank. The other three edges of the isolation plate are respectively sealed and fixed to the inner wall of the dust suction water tank, and the top and bottom surfaces of the isolation plate are both made into slopes inclined toward the horizontal center line of the dust suction water tank on the side of the water inlet.

4. The dust suction and reduction system for cantilever tunneling machine construction according to claim 3 is characterized by: The water supply and return unit includes a high-pressure water pipe for entering the cave, a mud pipe and a mud storage pool; the high-pressure water pipe for entering the cave is connected to the water inlet of the dust suction water tank; the mud pipe is respectively connected to the slurry discharge port of the dust suction water tank and the mud storage pool.

Images