An exhaust silencing system, a tunneling machine excavation cabin exhaust system, and methods of use

Abstract

The application discloses an exhaust silencing system, a tunneling machine excavation cabin exhaust system and a use method, and solves the technical problem of clean exhaust containing impurity gas which cannot be solved by the existing silencing equipment. The exhaust silencing system comprises a silencing box provided with at least one silencing hole plate and at least one exhaust pipe inside and connected with exhaust holes on the outer wall, the exhaust pipe is connected with a pipeline to be exhausted, and a plurality of silencing holes are arranged on the exhaust pipe at intervals; when in use, the silencing box is filled with liquid to submerge the exhaust pipe, and the silencing hole plate is located outside the liquid; the tunneling machine excavation cabin exhaust system comprises the exhaust silencing system; and the use method comprises a silencing mode, a cleaning mode and a replacement mode. Compared with the prior art, the application has the following characteristics: the noise during the exhaust of the excavation cabin is effectively reduced, the construction operation environment is improved, the air quality near the exhaust port is effectively improved, the service life of the silencing system is effectively prolonged, maintenance is more convenient, and manpower cost is saved.

Description

Technical Field

[0001] This invention relates to the field of exhaust device technology, and in particular to an exhaust silencing system, an exhaust system for the excavation chamber of a tunneling machine, and a method of using it. Background Technology

[0002] During tunneling operations in sandstone strata, earth pressure shield tunneling machines (EPS) and dual-mode shield tunneling machines require the injection of large amounts of foam for soil improvement. Because the foam contains a significant amount of compressed air, this causes an increase in soil chamber pressure. Therefore, it is necessary to vent the soil chamber to maintain stable pressure. Similarly, slurry shield tunneling machines (SMTs) and dual-mode shield tunneling machines (DMTs) also prevent mud cake formation by adding air to the cutterhead and venting the slurry chamber during tunneling in clay strata. The venting process generates considerable noise, and because the discharged air contains a large amount of mud and debris, the air quality near the vent is poor, rendering existing silencers unusable and severely impacting the tunneling machine's operating environment.

[0003] While existing tunneling machine pressure-maintaining devices include exhaust silencers, they do not provide specific exhaust silencer principles. For example, Chinese utility model patent CN 215830504 U, with an authorization announcement date of February 15, 2022, discloses a four-stage segmented adjustable air pressure-maintaining device for a slurry shield tunneling machine. This device includes a first control valve, a second control valve, a third control valve, a fourth control valve, a pressure regulating chamber, a first main air path, a first pressure transmitter, a first filter pressure reducing valve, a first controller, and a backup control system. The first, second, third, and fourth control valves are respectively connected to the pressure regulating chamber. The first pressure transmitter is connected to the pressure regulating chamber. The first controller is connected to the first pressure transmitter and the first filter pressure reducing valve. The first main air path is connected to the first filter pressure reducing valve. The first filter pressure reducing valve is connected to the first and second control valves. The third and fourth control valves are respectively connected to the first silencer. The backup control system is connected to the pressure regulating chamber.

[0004] Although the above-mentioned four-stage split-range regulating air pressure holding device for slurry shield tunneling machines publicly uses the first and second silencers, the specific structure and working principle of the silencers are not disclosed. Although the entire technical solution can overcome the technical difficulties of large-diameter valves with large flow rates and fast flow speeds, it cannot solve the technical problems of high noise and harsh environment during exhaust.

[0005] Chinese utility model patent CN209012072U, with an authorization announcement date of June 21, 2019, discloses a twin-screw blower exhaust silencer with a heat insulation layer. It includes a cylindrical sealed container, a blower exhaust connection pipe and a blower mounting plate on the top of the silencer, and an exhaust pipe at the far end of the silencer. The silencer includes a heat insulation part and a noise reduction part. The heat insulation part includes an inner shell, an outer shell, and a heat insulation layer disposed between the inner shell and the outer shell. The noise reduction part is disposed within the inner shell of the silencer and includes a sound-absorbing perforated plate and a set of sound-absorbing pipes disposed on the sound-absorbing perforated plate.

[0006] The aforementioned twin-screw blower exhaust silencer with heat insulation layer discloses its specific structure and working principle, which can achieve the effects of heat insulation and noise reduction, but it still cannot solve the problem that the exhaust gas contains a large amount of water vapor and sludge. Summary of the Invention

[0007] To address the shortcomings of the aforementioned background technology, this invention proposes an exhaust silencing system, an exhaust system for the excavation chamber of a tunneling machine, and a method for using it, which solves the problem that existing silencing equipment cannot effectively handle the clean exhaust of gases containing impurities.

[0008] The technical solution of this application is as follows:

[0009] An exhaust silencing system includes a silencing box with at least one silencing perforated plate and at least one exhaust pipe inside, and exhaust holes connected to the outer wall. The exhaust pipe is connected to the pipe to be vented, and a plurality of silencing holes are provided on the exhaust pipe at intervals. In use, the silencing box is filled with liquid that submerges the exhaust pipe, and the silencing perforated plate is located outside the liquid.

[0010] This technical solution not only achieves multiple levels of noise reduction, but also utilizes a combination of various noise reduction methods. Firstly, the noise reduction holes are submerged in liquid, allowing the noise reduction effects of the holes and the liquid to work simultaneously. When compressed gas passes through the liquid, it passes through a noise reduction plate located outside the liquid. The noise reduction holes, the plate, and the liquid all work together to reduce the noise of the compressed gas. Specifically, the compressed gas undergoes noise reduction through the solid porous structure of the holes and plate, the fluid action of the liquid, and the gaseous space between the liquid and the plate. Finally, the gas exits the silencer box through the exhaust port. Simultaneously, the liquid and the plate can filter out any sludge or impurities carried in the compressed gas, ensuring both effective noise reduction and a clean working environment. The liquid can be of various types, such as oil or water.

[0011] Furthermore, the muffler box is connected to a flushing unit, which includes a muffler flushing pipe corresponding to the muffler perforated plate and an exhaust pipe flushing pipe connected to the exhaust pipe. The muffler box is also connected to a sewage discharge unit.

[0012] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system. A flushing unit cleans the silencing box and its internal components. Specifically, the silencing perforation plate flushing pipe flushes the perforation plate, preventing sludge from the compressed gas from clogging it. Similarly, the exhaust pipe flushing pipe cleans the silencing holes and surrounding space in the exhaust pipe, preventing sludge from clogging them. Furthermore, as the silencing box operates for extended periods, sludge accumulates inside. To ensure smooth exhaust flow and efficient silencing, a drain unit removes the sludge and liquid from the silencing box. This drain unit can operate independently or simultaneously with the flushing unit. After the drain unit removes the contaminants, the flushing unit can refill the silencing box with silencing liquid.

[0013] Furthermore, the silencing perforated plate flushing pipeline and the exhaust pipe flushing pipeline are connected in parallel to the cleaning fluid pressurization pipeline, the exhaust pipe flushing pipeline and the exhaust pipe are connected in parallel to the exhaust pipe to be vented, the exhaust pipe to be vented is equipped with a first valve, and the exhaust flushing pipeline is equipped with a second valve.

[0014] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system in which the silencing orifice plate flushing pipeline and the exhaust pipe flushing pipeline are connected in parallel, and the exhaust pipe flushing pipeline and the exhaust pipe are connected in parallel. This not only simplifies the pipeline layout and saves space, but also allows for convenient control of the on / off state of each pipeline through the first and second valves, without the need for multiple cleaning fluid pressurization pipelines or multiple exhaust pipes. The first and second valves allow for convenient switching between silencing mode, cleaning mode and replacement mode.

[0015] Furthermore, the silencing perforated plate flushing pipeline is equipped with a third valve, and at least one of the first valve, second valve, and third valve is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

[0016] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system. The addition of a third valve further improves the convenience of mode switching. Furthermore, in cleaning mode, the on / off state of the silencing plate flushing pipe and the exhaust pipe flushing pipe can be independently controlled, thus offering three different cleaning methods: using the silencing plate flushing pipe alone to flush the silencing plate clogged with sludge, using the exhaust pipe flushing pipe alone to flush the exhaust pipe, and simultaneously using the silencing plate flushing pipe to flush the silencing plate clogged with sludge and the exhaust pipe flushing pipe to flush the exhaust pipe. The types of the first, second, and third valves are open to those skilled in the art, as long as mode switching is achieved; valves capable of automatic control are preferred.

[0017] Furthermore, the sewage discharge unit includes a sewage pump connected to the silencer box, and a fourth valve is provided in the sewage discharge pipeline between the sewage pump and the silencer box.

[0018] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system, which improves sewage discharge efficiency and effect by setting up a sewage pump, and improves the convenience of mode switching by setting up a fourth valve.

[0019] Furthermore, the sewage pump is a pneumatic diaphragm pump, which is connected to a compressed air source through a fifth valve. At least one of the fourth and fifth valves is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

[0020] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system. Using a diaphragm pump for sewage discharge can further improve the sewage discharge efficiency and effect. The fourth valve and the fifth valve can be different types of valves or the same type of valves.

[0021] Furthermore, the exhaust pipe is located at the bottom of the muffler box, the muffler plate is located at the top of the muffler box, the muffler plate flushing pipe is located at the upper or lower part of the muffler plate, and the muffler plate flushing pipe is provided with a plurality of nozzles corresponding to the muffler plate.

[0022] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system. The exhaust pipe and silencing perforated plates are respectively positioned at the upper and lower ends of the silencing box. This fully utilizes the internal space of the silencing box, increases its volume, and extends the path of the compressed gas, thereby improving the silencing effect. The location of the silencing perforated plate flushing pipe is not particularly limited, as long as it can flush the silencing perforated plate. Preferably, each nozzle is positioned corresponding to the silencing holes of the silencing perforated plate.

[0023] Furthermore, the silencing perforated plate covers the entire cross-section of the inner cavity of the silencing box, and the edges of the silencing perforated plate are connected to the inner walls of the silencing box. Several silencing perforated plate flushing pipes are arranged in parallel at intervals, or the silencing plate flushing pipes extend in a coil shape.

[0024] Based on the above technical solutions, this technical solution provides a preferred exhaust silencing system that covers the entire flow cross section of the compressed gas with a silencing orifice plate to fully ensure the silencing effect; and covers the entire silencing orifice plate with a silencing orifice plate flushing pipe to fully ensure the flushing effect.

[0025] Furthermore, several exhaust pipes are arranged in parallel, with adjacent exhaust pipes spaced apart inside the muffler box.

[0026] Based on the above technical solutions, this technical solution provides a preferred exhaust muffler system. Setting up multiple exhaust pipes can not only improve exhaust efficiency, but also divide the exhaust gas pressure, thereby improving the muffler effect. At the same time, the multiple exhaust pipes can also clean the inside of the muffler box more thoroughly.

[0027] An exhaust system for the excavation chamber of a tunneling machine includes an exhaust port connected to the excavation chamber of the tunneling machine, and an exhaust silencing system including any of the above, wherein the exhaust port is connected to the exhaust pipe.

[0028] A method for using an exhaust system for the excavation chamber of a tunneling machine, employing any of the above-mentioned exhaust systems for the excavation chamber of a tunneling machine, includes a silencing mode, a cleaning mode, and a displacement mode during use;

[0029] When the silencer mode is activated, the compressed air in the excavation chamber is discharged sequentially through the exhaust pipe, exhaust pipe, liquid in the silencer box, silencer plate, and exhaust hole, and then enters the water tank, where it passes through water filtration and sound insulation plate.

[0030] When the cleaning mode is activated, the cleaning fluid sequentially flows through the cleaning fluid pressurization line, the muffler plate flushing line, and the nozzle to flush the muffler plate, or the cleaning fluid sequentially flows through the cleaning fluid pressurization line, the exhaust pipe flushing line, and the exhaust pipe to flush the muffler hole and the surrounding area of ​​the muffler hole, or the cleaning fluid simultaneously flows through the cleaning fluid pressurization line to flush the muffler plate, the muffler hole, and the surrounding area of ​​the muffler hole.

[0031] When the replacement mode is activated, the original liquid in the muffler box is discharged through the drain unit, and the cleaning fluid pressurization pipeline injects new liquid into the muffler box through the muffler perforation plate flushing pipeline and nozzle, or the cleaning fluid pressurization pipeline injects new liquid into the muffler box through the exhaust pipe flushing pipeline, exhaust pipe and muffler hole, or the cleaning fluid pressurization pipeline injects the original liquid into the muffler box simultaneously through the muffler perforation plate flushing pipeline, nozzle and exhaust pipe flushing pipeline, exhaust pipe and muffler hole.

[0032] Compared with existing technologies, the exhaust silencing system, tunneling machine excavation chamber exhaust system, and usage method provided by this invention solve the problem that existing silencing equipment cannot effectively handle the clean exhaust of gases containing impurities. The exhaust silencing system provided by this invention utilizes the filtration and silencing effects of liquids to initially filter and silence compressed air containing slag through water, followed by secondary silencing through a perforated silencing plate, thus solving the problems of easy clogging and poor silencing effect of ordinary silencers. Furthermore, the silencing box in this invention has a flushing unit and a sewage discharge unit, facilitating maintenance and extending service life.

[0033] Compared with the prior art, the exhaust muffler system provided by the present invention has the following characteristics:

[0034] (1) Effectively reduces noise during excavation chamber ventilation and improves the working environment;

[0035] (2) Effectively improves air quality near the discharge outlet;

[0036] (3) It effectively extends the service life of the silencing system;

[0037] (4) Maintenance is more convenient and saves labor costs. Attached Figure Description

[0038] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of the present invention;

[0040] Figure 2 for Figure 1 Schematic diagram of the exhaust pipe structure;

[0041] Figure 3 for Figure 1 A schematic diagram of the flushing pipeline for the middle silencer orifice plate.

[0042] Explanation of icon numbers:

[0043] 1-First valve, 2-Silencer perforation plate flushing pipeline, 3-Nozzle, 4-Exhaust pipe, 5-Sewage pump, 6-Silencer perforation plate, 7-Silencer box, 8-Second valve, 9-Third valve, 10-Fourth valve, 11-Fifth valve, 12-Silencer hole, 13-Exhaust hole, 14-Exhaust pipe to be exhausted, 15-Cleaning fluid pressurization pipeline, 16-Exhaust pipe flushing pipeline. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the core concept of the present invention and the following embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] An exhaust muffler system, such as Figure 1 and Figure 2As shown, a muffler box 7 includes at least one muffler plate 6 and at least one exhaust pipe 4 inside, and an exhaust hole 13 connected to the outer wall. The exhaust pipe 4 is connected to the exhaust pipe 14, and a plurality of muffler holes 12 are provided on the exhaust pipe 4 at intervals. In use, the muffler box 7 is filled with liquid that submerges the exhaust pipe 4, and the muffler plate 6 is located outside the liquid.

[0046] The exhaust silencing system provided in this embodiment not only achieves multiple silencing effects, but also utilizes a combination of silencing methods. Firstly, the silencing holes 12 are immersed in liquid, and their silencing effect works simultaneously with that of the liquid. When compressed gas passes through the liquid, it passes through the silencing plate 6 located outside the liquid. The silencing holes 12, the silencing plate 6, and the liquid simultaneously silencing the compressed gas. That is, the compressed gas undergoes silencing through the solid porous structure of the silencing holes 12 and the silencing plate 6, silencing through the fluid action of the liquid, and silencing through the gaseous space between the liquid and the silencing plate 12. Finally, the gas exits from the exhaust port 13 into the silencing box 7. Simultaneously, the liquid and the silencing plate 6 can filter out any sludge or impurities carried in the compressed gas, ensuring both effective silencing and a clean working environment. The liquid can be of various types, such as oil or water.

[0047] The number of silencer plates 6 and exhaust pipes 4 can be arbitrarily determined. When multiple silencer plates 6 are provided, adjacent silencer plates 6 are arranged in layers with intervals, so that compressed gas can pass through each silencer plate 6 in sequence. When multiple exhaust pipes 4 are provided, adjacent exhaust pipes 4 are also distributed at different positions within the silencer box 7 with intervals.

[0048] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system. The silencing box 7 is connected to a flushing unit, which includes a silencing perforated plate flushing pipe 2 corresponding to the silencing perforated plate 6 and an exhaust pipe flushing pipe 16 connected to the exhaust pipe 4. The silencing box 7 is also connected to a sewage discharge unit.

[0049] In this embodiment, the rinsing unit can clean the muffler box 7 and the components inside the muffler box 7. In particular, the rinsing pipe 2 can rinse the muffler plate 6 to prevent mud and sludge in the compressed gas from clogging the muffler plate 6. The exhaust pipe rinsing pipe 16 can clean the muffler hole 12 of the exhaust pipe 4 and the space around the muffler hole 12 to prevent mud and sludge in the compressed gas from clogging the muffler hole 12.

[0050] Meanwhile, as the muffler 7 operates for an extended period, the amount of sludge and debris inside will increase. To ensure smooth exhaust and efficient noise reduction, this embodiment uses a sludge removal unit to drain the sludge and liquid from the muffler 7. The sludge removal unit can operate independently or simultaneously with the flushing unit. After the sludge removal unit has discharged the waste from the muffler 7, the flushing unit can re-inject the noise-reducing liquid into the muffler 7.

[0051] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the silencing orifice plate flushing pipe 2 and the exhaust pipe flushing pipe 16 are connected in parallel to the cleaning fluid pressurization pipe 15, the exhaust pipe flushing pipe 16 and the exhaust pipe 4 are connected in parallel to the exhaust pipe 14, the exhaust pipe 14 is provided with a first valve 1, and the exhaust flushing pipe is provided with a second valve 8.

[0052] The parallel connection of the silencing orifice plate flushing pipe 2 and the exhaust pipe flushing pipe 16, and the parallel connection of the exhaust pipe flushing pipe 16 and the exhaust pipe 4, not only simplifies the pipe layout and saves space, but also allows for convenient control of the on / off state of each pipe through the first valve 1 and the second valve 8, without the need for multiple cleaning fluid pressurization pipes 15 or multiple exhaust pipes 14. The silencing mode, cleaning mode and replacement mode can be easily switched through the first valve 1 and the second valve 8.

[0053] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the silencing orifice plate flushing pipe 2 is provided with a third valve 9, and at least one of the first valve 1, the second valve 8, and the third valve 9 is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

[0054] This embodiment further improves the convenience of mode switching by setting the third valve 9. Moreover, in the cleaning mode, the on / off state of the silencer plate flushing pipe 2 and the exhaust pipe flushing pipe 16 can be independently controlled, thus providing three different cleaning methods to choose from: using the silencer plate flushing pipe 2 alone to flush the sludge-clogged silencer plate 6, using the exhaust pipe flushing pipe 16 alone to flush the exhaust pipe 4, or using the silencer plate flushing pipe 2 to flush the sludge-clogged silencer plate 6 and the exhaust pipe flushing pipe 16 to flush the exhaust pipe 4 simultaneously. As for the types of the first valve 1, the second valve 8, and the third valve 9, those skilled in the art can freely implement them, as long as mode switching can be achieved. It is preferable to use valves that can be automatically controlled.

[0055] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the sewage discharge unit includes a sewage pump 5 connected to the silencing box 7, and a fourth valve 10 is provided in the sewage discharge pipeline between the sewage pump 5 and the silencing box 7.

[0056] This embodiment improves sewage discharge efficiency and effect by setting up sewage pump 5, and improves the convenience of mode switching by setting up fourth valve 10.

[0057] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the sewage pump 5 is a pneumatic diaphragm pump, which is connected to a compressed air source through a fifth valve 11, and at least one of the fourth valve 10 and the fifth valve 11 is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

[0058] In this embodiment, the use of a diaphragm pump for sewage discharge can further improve the sewage discharge efficiency and effect. The fourth valve 10 and the fifth valve 11 can be different types of valves or the same type of valves.

[0059] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the exhaust pipe 4 is disposed at the bottom of the silencing box 7, the silencing perforated plate 6 is disposed at the top of the silencing box 7, and the silencing perforated plate flushing pipe 2 is disposed at the upper or lower part of the silencing perforated plate 6. Figure 1 and Figure 3 As shown, the silencing perforated plate flushing pipe 2 is provided with a number of nozzles 3 corresponding to the silencing perforated plate 6.

[0060] In this embodiment, the exhaust pipe 4 and the muffler plate 6 are respectively installed at the upper and lower ends of the muffler box 7. This can make full use of the internal space of the muffler box 7, increase the volume of the muffler box 7, extend the path of the compressed gas, and thus improve the muffler effect. The installation position of the muffler plate flushing pipe 2 does not need to be particularly limited, as long as it can flush the muffler plate 6. Preferably, each nozzle 3 is set to correspond to the muffler holes of the muffler plate 6.

[0061] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein the silencing perforated plate 6 covers the entire cross-section of the inner cavity of the silencing box 7, the edges of the silencing perforated plate 6 are connected to the inner walls of the silencing box 7, and the silencing perforated plate flushing pipes 2 are arranged in parallel at intervals or extend in a coil shape.

[0062] In this embodiment, the silencer plate 6 covers the entire flow section of the compressed gas to fully ensure the silencer effect; the silencer plate flushing pipe 2 covers the entire silencer plate 6 to fully ensure the flushing effect.

[0063] Based on the above embodiments, this embodiment provides a preferred exhaust silencing system, wherein several exhaust pipes 4 are arranged in parallel, and adjacent exhaust pipes 4 are spaced apart in the silencing box 7.

[0064] In this embodiment, multiple exhaust pipes 4 can improve exhaust efficiency and divide the exhaust gas pressure, thereby improving the noise reduction effect. At the same time, the multiple exhaust pipes 4 can also clean the inside of the muffler box 7 more thoroughly.

[0065] An exhaust system for the excavation chamber of a tunneling machine includes an exhaust port connected to the excavation chamber of the tunneling machine, including the exhaust silencing system described in any of the above embodiments, wherein the exhaust port is connected to the exhaust pipe 14.

[0066] A method for using the exhaust system of the excavation chamber of a tunneling machine, employing the exhaust system of the excavation chamber of a tunneling machine as described in any of the above embodiments, includes a silencing mode, a cleaning mode, and a replacement mode during use.

[0067] When the silencer mode is activated, the compressed air in the excavation chamber is discharged sequentially through the exhaust pipe 14, the exhaust pipe 4, the liquid in the silencer box 7, the silencer plate 6, and the exhaust hole 13, and then enters the water tank, where it passes through water filtration and the sound insulation plate 6.

[0068] When the cleaning mode is activated, the cleaning fluid sequentially flows through the cleaning fluid pressurization line 15, the muffler plate flushing line 2, and the nozzle 3 to flush the muffler plate 6, or the cleaning fluid sequentially flows through the cleaning fluid pressurization line 15, the exhaust pipe flushing line 16, and the exhaust pipe 4 to flush the muffler hole 12 and the surrounding area of ​​the muffler hole 12, or the cleaning fluid simultaneously flows through the cleaning fluid pressurization line 15 to flush the muffler plate 6, the muffler hole 12, and the surrounding area of ​​the muffler hole 12.

[0069] When the replacement mode is activated, the original liquid in the muffler box 7 is discharged through the sewage discharge unit. The cleaning fluid pressurization pipeline 15 injects new liquid into the muffler box 7 through the muffler plate flushing pipeline 2 and the nozzle 3. Alternatively, the cleaning fluid pressurization pipeline 15 injects new liquid into the muffler box 7 through the exhaust pipe flushing pipeline 16, the exhaust pipe 4, and the muffler hole 12. Or, the cleaning fluid pressurization pipeline 15 simultaneously injects the original liquid into the muffler box 7 through the muffler plate flushing pipeline 2, the nozzle 3, the exhaust pipe flushing pipeline 16, the exhaust pipe 4, and the muffler hole 12.

[0070] All aspects not detailed in this invention are conventional technical means known to those skilled in the art.

[0071] The above content shows and describes the basic principles, main features, and beneficial effects of the present invention. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An exhaust silencing system characterized by: The silencing box (7) includes an internal silencing plate (6) and an exhaust pipe (4) and an exhaust hole (13) connected to the outer wall. The exhaust pipe (4) is connected to the exhaust pipe (14) and a plurality of silencing holes (12) are provided on the exhaust pipe (4) at intervals. When in use, the silencing box (7) is filled with liquid that submerges the exhaust pipe (4) and the silencing plate (6) is located outside the liquid. The muffler box (7) is connected to a flushing unit, which includes a muffler flushing pipe (2) corresponding to the muffler perforated plate (6) and an exhaust pipe flushing pipe (16) connected to the exhaust pipe (4). The muffler box (7) is also connected to a sewage discharge unit. The silencer flushing pipe (2) and the exhaust pipe flushing pipe (16) are connected in parallel to the cleaning fluid pressurization pipe (15). The exhaust pipe flushing pipe (16) and the exhaust pipe (4) are connected in parallel to the exhaust pipe (14). The exhaust pipe (14) is equipped with a first valve (1), and the exhaust pipe flushing pipe is equipped with a second valve (8). The silencing perforated plate flushing pipeline (2) is equipped with a third valve (9), and at least one of the first valve (1), the second valve (8), and the third valve (9) is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

2. The exhaust silencing system of claim 1, wherein: The sewage discharge unit includes a sewage pump (5) connected to the silencer box (7), and a fourth valve (10) is provided in the sewage discharge pipeline between the sewage pump (5) and the silencer box (7).

3. The exhaust silencing system of claim 2, wherein: The sewage pump (5) is a pneumatic diaphragm pump. The pneumatic diaphragm pump is connected to a compressed air source through the fifth valve (11). At least one of the fourth valve (10) and the fifth valve (11) is a manual valve, a pneumatic valve, a hydraulic valve, or an electric valve.

4. An exhaust silencing system according to any one of claims 1 to 3, characterised in that: The exhaust pipe (4) is located at the bottom of the muffler box (7), the muffler plate (6) is located at the top of the muffler box (7), the muffler plate flushing pipe (2) is located at the upper or lower part of the muffler plate (6), and the muffler plate flushing pipe (2) is provided with a number of nozzles (3) corresponding to the muffler plate (6).

5. The exhaust silencing system of claim 4, wherein: The silencing perforated plate (6) covers the entire cross-section of the inner cavity of the silencing box (7). The edges of the silencing perforated plate (6) are connected to the inner walls of the silencing box (7). The silencing perforated plate flushing pipes (2) are arranged in parallel at intervals, or the silencing perforated plate flushing pipes (2) extend in a coil shape.

6. The exhaust silencing system according to any of claims 1-3, 5, characterized in that: Several exhaust pipes (4) are arranged in parallel, and adjacent exhaust pipes (4) are spaced apart inside the muffler box (7).

7. A tunneling machine excavation compartment exhaust system, comprising an exhaust port connected to the tunneling machine excavation compartment, characterized in that: The exhaust silencing system includes any one of claims 1-6, wherein the exhaust port is connected to the exhaust pipe (14).

8. A method for using an exhaust system for the excavation chamber of a tunneling machine, characterized in that: The tunneling machine excavation chamber exhaust system described in claim 7 is provided with a plurality of nozzles (3) corresponding to the silencing orifice plate (6) on the silencing orifice plate flushing pipe (2), and includes silencing mode, cleaning mode and replacement mode when in use; When the silencing mode is activated, the compressed air in the excavation chamber is discharged sequentially through the exhaust pipe (14), the exhaust pipe (4), the liquid in the silencing box (7), the silencing perforated plate (6), and the exhaust hole (13), and enters the water tank, passing through the water filter and the sound insulation perforated plate (6). When the cleaning mode is activated, the cleaning fluid sequentially flows through the cleaning fluid pressurization pipeline (15), the muffler flushing pipeline (2), and the nozzle (3) to flush the muffler plate (6), or the cleaning fluid sequentially flows through the cleaning fluid pressurization pipeline (15), the exhaust pipe flushing pipeline (16), and the exhaust pipe (4) to flush the muffler hole (12) and the surrounding area of ​​the muffler hole (12), or the cleaning fluid simultaneously flows through the cleaning fluid pressurization pipeline (15) to flush the muffler plate (6), the muffler hole (12), and the surrounding area of ​​the muffler hole (12); When the replacement mode is activated, the original liquid in the muffler box (7) is discharged through the sewage discharge unit, and the cleaning fluid pressurization pipeline (15) injects new liquid into the muffler box (7) through the muffler plate flushing pipeline (2) and nozzle (3), or the cleaning fluid pressurization pipeline (15) injects new liquid into the muffler box (7) through the exhaust pipe flushing pipeline (16), exhaust pipe (4) and muffler hole (12), or the cleaning fluid pressurization pipeline (15) simultaneously injects the original liquid into the muffler box (7) through the muffler plate flushing pipeline (2), nozzle (3) and exhaust pipe flushing pipeline (16), exhaust pipe (4) and muffler hole (12).

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