A ventilation system for rail transit subway construction

Abstract

The present invention discloses a ventilation system for rail transit subway construction, specifically relates to the technical field of ventilation systems, including an exhaust component, the exhaust component includes an air supply duct, the air supply duct is provided with multiple sections, an air inlet is fixedly installed on one side of the bottom of the air supply duct, an auxiliary exhaust port is fixedly installed on the side of the bottom of the air supply duct away from the air inlet, and a first valve is fixedly installed on one end of the air supply duct close to the auxiliary exhaust port. The present invention, by arranging the exhaust component, can exhaust the air in the rail transit subway by using the exhaust channel, and can scrape and clean the dust on the inner wall of the connecting elbow and the air supply duct. At the same time, the dust cleaned by scraping the wall is discharged through a separate waste exhaust channel and dust-removed, so as to prevent the dust from accumulating for a long time and affecting the wind environment in the rail transit subway. In addition, there is no need to disassemble the connecting elbow and the air supply duct for in-depth cleaning using special cleaning tools, which is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation systems, and in particular to a ventilation system for rail transit subway construction. Background Art

[0002] Rail transit subway is an urban rapid public transportation system that mainly operates in cities and their suburbs. It plays an important role in alleviating urban traffic pressure, improving urban functions and residents' travel convenience.

[0003] The existing ventilation systems used in rail transit subway construction mainly include fresh air systems, exhaust systems, emergency ventilation systems and local ventilation systems. Most of the system constructions are assembled with ventilation pipes to form ventilation ducts. However, since the ventilation pipes transport air for a long time, dust in the air will adhere to the inner wall of the pipes. Long-term accumulation will have a certain impact on the air environment in the rail transit subway, so cleaning staff are required to clean it regularly. During cleaning, it is often necessary to shut down the machine and disassemble the pipes, and use special cleaning tools for in-depth cleaning, which is more troublesome. For this reason, we propose a ventilation system for rail transit subway construction to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a ventilation system for rail transit subway construction to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A ventilation system for rail transit subway construction, comprising an exhaust assembly, the exhaust assembly comprising an air duct, the air duct being provided with multiple sections, an air inlet being fixedly installed on one side of the bottom of the air duct, an auxiliary outlet being fixedly installed on the side of the bottom of the air duct away from the air inlet, a first valve being fixedly installed on one end of the air duct close to the auxiliary outlet, a first fan being fixedly installed on the end of the first valve away from the air duct, an L-shaped duct being fixedly installed on the bottom end of the second valve, a dust removal component being fixedly installed on the end of the L-shaped duct away from the second valve, a second fan being fixedly installed on the end of the dust removal component away from the L-shaped duct, an auxiliary outlet duct being fixedly installed on the end of the second fan away from the dust removal component, a processing mechanism being fixedly installed on the end of the auxiliary outlet duct away from the second fan, a connecting elbow being fixedly installed between two adjacent sections of the air duct at a turning position, an exhaust tail pipe being provided at the end of the multiple sections of the air duct 1, and the exhaust tail pipe being fixedly installed on the end of the first fan.

[0006] Preferably, a first bracket is fixedly installed at one end of the connecting elbow, and a second bracket is fixedly installed at the other end of the connecting elbow, a first shaft is rotatably installed at the bottom of the first bracket, the first shaft is located at the axis position of the connecting elbow, a first mounting rod is fixedly installed at both ends of the outer side of the first shaft, a first scraper is vertically installed at the end of the first mounting rod, a second shaft is rotatably installed at the bottom of the second bracket, the second shaft is located at the axis position of the connecting elbow, the first shaft and the second shaft are vertically distributed, a second mounting rod is fixedly installed at both ends of the outer side of the second shaft, a second scraper is vertically installed at the end of the second mounting rod, and the outer sides of the first scraper and the second scraper are in contact with the inner wall of the connecting elbow.

[0007] Preferably, a first auxiliary shaft is fixedly installed on one end of the first shaft close to the second shaft, a second auxiliary shaft is fixedly installed on one end of the second shaft close to the first shaft, and an end of the second auxiliary shaft away from the second shaft is rotatably installed on the connecting elbow, and a first bevel gear is fixedly installed on the end of the first auxiliary shaft away from the first shaft and the outer side of the second auxiliary shaft, and the two first bevel gears are meshed and connected, and a first motor is fixedly installed on one end of the outer wall of the connecting elbow close to the second auxiliary shaft, and the shaft ends of the first motor and the second auxiliary shaft are fixedly installed.

[0008] Preferably, a third bracket is fixedly installed on both sides of the inner wall of the air supply duct, a third shaft is rotatably installed on the bottom of the third bracket, a plurality of third mounting rods are fixedly installed on the outer side of the third shaft, and a third scraper is vertically installed on the ends of the plurality of third mounting rods, and the outer side of the third scraper is in contact with the inner wall of the connecting elbow.

[0009] Preferably, a connecting protrusion is fixedly mounted on one end of the first shaft and the second shaft away from the first bevel gear, and the connecting protrusion is movably engaged with the end of the corresponding third shaft.

[0010] Preferably, an air inlet pipe is fixedly installed at the bottom end of the air inlet, and a hollow cover is fixedly installed at the bottom end of the air inlet pipe.

[0011] Preferably, the first valve includes a valve frame, the two ends of the valve frame are respectively fixedly installed between the air supply duct and the first fan, a ball valve core is movably provided in the middle of the valve frame, a valve stem is vertically installed in the middle of the ball valve core, the valve stem is rotatably installed on the valve frame, a through groove is horizontally opened in the middle of the ball valve core, one end of the valve stem extends out of the outside of the valve frame and is fixedly installed with a second bevel gear.

[0012] Preferably, the structure of the second valve is the same as that of the first valve, and the second valve is fixedly installed between the auxiliary exhaust port and the L-shaped pipe through the two end portions of the valve frame. The through groove in the first valve and the two ends of the valve frame are connected to each other, and the through groove in the second valve and the two ends of the valve frame are not connected. The second bevel gears in the first valve and the second valve are meshed and connected, and a second motor is fixedly installed at the top of the valve frame in the first valve, and the driving end of the second motor is fixedly installed to the top of the corresponding valve stem.

[0013] Preferably, the dust removal component includes a dust removal outer frame, which is fixedly installed between the L-shaped duct and the second fan, and a plurality of dust removal bags are fixedly installed in the dust removal outer frame.

[0014] Preferably, the processing mechanism includes a processing outer cylinder, a liquid inlet pipe is fixedly installed on one side of the top of the processing outer cylinder, a liquid inlet valve is fixedly installed on the liquid inlet pipe, a liquid discharge pipe is fixedly installed on one side of the bottom end of the processing outer cylinder, a liquid discharge valve is fixedly installed on the liquid discharge pipe, an exhaust port is fixedly installed on one side of the top end of the processing outer cylinder, an exhaust pipe is fixedly installed on the end of the exhaust port, an air intake pipe is fixedly installed on the other side of the top end of the processing outer cylinder, one end of the air intake pipe is fixedly installed on one end of the auxiliary exhaust pipe away from the second fan, the end of the air intake pipe away from the auxiliary exhaust pipe extends into the processing outer cylinder and is fixedly installed with an exhaust pipe, and a plurality of evenly distributed exhaust slots are provided on the exhaust pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting up the exhaust component, the air in the rail transit subway can be exhausted through the exhaust channel, and the dust on the inner wall of the connecting elbow and the air duct can be scraped and cleaned. At the same time, the dust cleaned by scraping the wall is discharged through a separate waste discharge channel and dust removed, preventing the dust from accumulating for a long time and affecting the wind environment in the rail transit subway. There is no need to disassemble the connecting elbow and the air duct and use special cleaning tools for in-depth cleaning, which is simple and convenient.

[0017] 2. By setting up exhaust components, when a fire occurs in a rail transit subway and smoke is produced, it can be discharged in time through a separate exhaust channel and the smoke can be treated to prevent the smoke from being directly discharged and affecting the atmospheric environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the connection after some structures in the present invention are split.

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0023] Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle.

[0024] Figure 6 This is a schematic diagram of the connection after some structures in the present invention are split.

[0025] Figure 7 It is a structural connection diagram of the processing mechanism in the present invention.

[0026] In the figure: 1, air supply duct; 2, first valve; 3, first fan; 4, second valve; 5, L-shaped duct; 6, dust removal element; 7, second fan; 71, auxiliary exhaust duct; 8, treatment mechanism; 11, air inlet; 12, auxiliary exhaust outlet; 13, connecting elbow; 14, exhaust tail pipe; 131, first bracket; 132, second bracket; 133, first shaft; 1331, first mounting rod; 1332, first scraper; 134, second shaft; 1341, second mounting rod; 1342, second scraper; 1343, connecting cam; 135, first auxiliary shaft; 136, second auxiliary shaft; 137, first Bevel gear; 138, first motor; 101, third bracket; 102, third shaft; 103, third mounting rod; 104, third scraper; 111, air inlet pipe; 112, hollow cover; 21, valve frame; 22, ball valve core; 23, valve stem; 24, second bevel gear; 25, second motor; 221, through groove; 61, dust removal outer frame; 62, dust removal bag; 81, treatment outer cylinder; 82, liquid inlet pipe; 821, liquid inlet valve; 83, liquid discharge pipe; 831, liquid discharge valve; 84, exhaust port; 841, exhaust duct; 85, air inlet duct; 86, exhaust pipe; 861, exhaust groove. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: Figure 1-7 As shown, the present invention provides a ventilation system for rail transit subway construction, including an exhaust component, the exhaust component including an air duct 1, the air duct 1 is provided with multiple sections, and the multiple sections of air duct 1 are laid according to the requirements of rail transit subway construction, an air inlet 11 is fixedly installed on one side of the bottom of the air duct 1, and the air in the rail transit subway is sucked into the multiple sections of air duct 1 through the air inlet 11, an auxiliary exhaust port 12 is fixedly installed on the side of the bottom of the air duct 1 away from the air inlet 11, a first valve 2 is fixedly installed on one end of the air duct 1 close to the auxiliary exhaust port 12, a first fan 3 is fixedly installed on the end of the first valve 2 away from the air duct 1, and an auxiliary fan 3 is fixedly installed on the other end of the auxiliary fan 3. A second valve 4 is fixedly installed at the bottom end of the exhaust port 12, an L-shaped pipe 5 is fixedly installed at the bottom end of the second valve 4, a dust removal component 6 is fixedly installed at the end of the L-shaped pipe 5 away from the second valve 4, a second fan 7 is fixedly installed at the end of the dust removal component 6 away from the L-shaped pipe 5, an auxiliary exhaust pipe 71 is fixedly installed at the end of the second fan 7 away from the dust removal component 6, a processing mechanism 8 is fixedly installed at the end of the auxiliary exhaust pipe 71 away from the second fan 7, a connecting elbow 13 is fixedly installed between the two adjacent sections of the air supply pipe 1 at the turning position, an exhaust tail pipe 14 is provided at the end of the multi-section air supply pipe 1, and the exhaust tail pipe 14 is fixedly installed at the end of the first fan 3.

[0029] One end of the connecting elbow 13 is fixedly installed with a first bracket 131, and the other end of the connecting elbow 13 is fixedly installed with a second bracket 132. The bottom of the first bracket 131 is rotatably installed with a first shaft 133, and the first shaft 133 is located at the axis position of the connecting elbow 13. The outer ends of the first shaft 133 are fixedly installed with a first mounting rod 1331, and the end of the first mounting rod 1331 is vertically installed with a first scraper 1332. The bottom of the second bracket 132 is rotatably installed with a second shaft 134, and the second shaft 134 is located at the axis position of the connecting elbow 13. The first shaft 133 and the second shaft 134 are vertically distributed, and the outer ends of the second shaft 134 are fixed. A second mounting rod 1341 is installed, and a second scraper bar 1342 is vertically installed at the end of the second mounting rod 1341. The outer sides of the first scraper bar 1332 and the second scraper bar 1342 are in contact with the inner wall of the connecting elbow 13. By controlling the first shaft 133 to rotate, the first mounting rod 1331 and the first scraper bar 1332 are driven to rotate, so that the first scraper bar 1332 scrapes and cleans the inner wall of the connecting elbow 13. By controlling the second shaft 134 to rotate, the second mounting rod 1341 and the second scraper bar 1342 are driven to rotate, so that the second scraper bar 1342 scrapes and cleans the inner wall of the connecting elbow 13.

[0030] A first auxiliary shaft 135 is fixedly installed on one end of the first shaft 133 close to the second shaft 134, and a second auxiliary shaft 136 is fixedly installed on one end of the second shaft 134 close to the first shaft 133. The second auxiliary shaft 136 is rotatably installed on the connecting elbow 13 at one end away from the second shaft 134. A first bevel gear 137 is fixedly installed on the outer side of the first auxiliary shaft 135 away from the first shaft 133 and the second auxiliary shaft 136. The two first bevel gears 137 are meshed and connected. A first motor 138 is fixedly installed on one end of the outer wall of the connecting elbow 13 close to the second auxiliary shaft 136. The shaft ends of the first motor 138 and the second auxiliary shaft 136 are fixedly installed. By turning on the first motor 138, the second auxiliary shaft 136 is driven to rotate, and the two first bevel gears 137 are meshed and connected to drive the first auxiliary shaft 135 to rotate synchronously, thereby driving the first shaft 133 and the second shaft 134 to rotate synchronously.

[0031] A third bracket 101 is fixedly installed on both sides of the inner wall of the air duct 1, and a third shaft 102 is rotatably installed at the bottom of the third bracket 101. A plurality of third mounting rods 103 are fixedly installed on the outer side of the third shaft 102, and a third scraper 104 is vertically installed on the ends of the plurality of third mounting rods 103. The outer side of the third scraper 104 contacts the inner wall of the connecting elbow 13. By controlling the rotation of the third shaft 102, the plurality of third mounting rods 103 and the third scraper 104 are driven to rotate, so that the inner wall of the air duct 1 is scraped and cleaned by the third scraper 104.

[0032] A connecting protrusion 1343 is fixedly installed on one end of the first shaft 133 and the second shaft 134 away from the first bevel gear 137, and the connecting protrusion 1343 is movably engaged with the end of the corresponding third shaft 102. By setting the connecting protrusion 1343, the connecting protrusion 1343 is movably engaged with the end of the corresponding third shaft 102. When the first shaft 133 and the second shaft 134 rotate, the corresponding third shaft 102 in the air supply duct 1 is driven to rotate synchronously.

[0033] An air inlet pipe 111 is fixedly installed at the bottom end of the air inlet 11, and a hollow cover 112 is fixedly installed at the bottom end of the air inlet pipe 111. The air in the rail transit subway is sucked into the multi-section air duct 1 through the hollow cover 112, the air inlet pipe 111 and the air inlet 11. By removing the hollow cover 112, it is convenient to clean the inner walls of the air inlet pipe 111 and the air inlet 11.

[0034] The first valve 2 includes a valve frame 21, the two ends of the valve frame 21 are respectively fixedly installed between the air supply duct 1 and the first fan 3, a ball valve core 22 is movably provided in the middle of the valve frame 21, a valve stem 23 is vertically installed in the middle of the ball valve core 22, the valve stem 23 is rotatably installed on the valve frame 21, a through groove 221 is horizontally opened in the middle of the ball valve core 22, one end of the valve stem 23 extends out of the outside of the valve frame 21 and is fixedly installed with a second bevel gear 24, by controlling the rotation of the valve stem 23, the ball valve core 22 is driven to rotate in the middle of the valve frame 21, so that the through groove 221 and the two ends of the valve frame 21 are connected to each other, and by controlling the valve stem 23 to continue to rotate, the ball valve core 22 is driven to continue to rotate in the middle of the valve frame 21, so that the through groove 221 and the two ends of the valve frame 21 are disconnected.

[0035] The structure of the second valve 4 is the same as that of the first valve 2. The second valve 4 is fixedly installed between the auxiliary exhaust port 12 and the L-shaped pipe 5 through the two ends of the valve frame 21. In the initial state, the through groove 221 in the first valve 2 and the two ends of the valve frame 21 are connected to each other, and the through groove 221 in the second valve 4 and the two ends of the valve frame 21 are not connected.

[0036] The second bevel gears 24 in the first valve 2 and the second valve 4 are meshed and connected, and a second motor 25 is fixedly installed on the top of the valve frame 21 in the first valve 2. The driving end of the second motor 25 is fixedly installed on the top of the corresponding valve stem 23. By turning on the second motor 25, the valve stem 23 in the first valve 2 is driven to rotate, and the two second bevel gears 24 are meshed and connected to drive the valve stem 23 in the second valve 4 to rotate synchronously, thereby driving the ball valve cores 22 in the first valve 2 and the second valve 4 to rotate in the middle of the valve frame 21, thereby making the through groove 221 in the first valve 2 and the two ends of the valve frame 21 disconnected, and the through groove 221 in the second valve 4 and the two ends of the valve frame 21 connected to each other.

[0037] The dust removal component 6 includes a dust removal outer frame 61, which is fixedly installed between the L-shaped pipe 5 and the second fan 7. A plurality of dust removal bags 62 are fixedly installed in the dust removal outer frame 61. When cleaning the dust on the inner wall of the multi-section air duct 1, the dust in the exhaust air is introduced into the dust removal outer frame 61 through the auxiliary exhaust port 12, the second valve 4 and the L-shaped pipe 5, and is dust-removed by the plurality of dust removal bags 62. Subsequently, the exhaust air is introduced into the processing mechanism 8 through the second fan 7 and the auxiliary exhaust pipe 71.

[0038] The treatment mechanism 8 includes a treatment outer cylinder 81, a liquid inlet pipe 82 is fixedly installed on one side of the top of the treatment outer cylinder 81, and a liquid inlet valve 821 is fixedly installed on the liquid inlet pipe 82. By opening the liquid inlet valve 821, the flue gas treatment liquid is introduced into the treatment outer cylinder 81 through the liquid inlet pipe 82. A discharge pipe 83 is fixedly installed on one side of the bottom end of the treatment outer cylinder 81, and a discharge valve 831 is fixedly installed on the discharge pipe 83. An exhaust port 84 is fixedly installed on one side of the top of the treatment outer cylinder 81, and an exhaust pipe 841 is fixedly installed at the end of the exhaust port 84. An air intake pipe 85 is fixedly installed on the other side of the top of the treatment outer cylinder 81, and one end of the air intake pipe 85 is fixedly installed on the auxiliary exhaust pipe. The exhaust pipe 71 is away from one end of the second fan 7, and the air inlet pipe 85 is away from one end of the auxiliary exhaust pipe 71 and extends to the treatment outer cylinder 81 and is fixedly installed with an exhaust pipe 86. The exhaust pipe 86 is provided with a plurality of evenly distributed exhaust grooves 861. The exhaust air introduced into the treatment mechanism 8 is introduced into the exhaust pipe 86 through the air inlet pipe 85, and is evenly discharged into the flue gas treatment liquid through the plurality of exhaust grooves 861 for flue gas treatment. The treated flue gas is discharged through the exhaust port 84 and the exhaust pipe 841 to prevent the direct discharge of flue gas from affecting the atmospheric environment. When the flue gas treatment liquid needs to be discharged, the drain valve 831 is opened and the flue gas treatment liquid is discharged through the drain pipe 83.

[0039] Working principle: When in use, multiple sections of air ducts 1 are laid according to the requirements of rail transit subway construction, and the paths of the multiple sections of air ducts 1 are designed. A connecting elbow 13 is fixedly installed between two adjacent sections of the air ducts 1 at the turning position, and the connecting clamping protrusion 1343 is movably clamped on the end of the corresponding third shaft 102. By opening the liquid inlet valve 821, the flue gas treatment liquid is introduced into the treatment outer cylinder 81 through the liquid inlet pipe 82;

[0040] In the initial state, the through groove 221 in the first valve 2 and the two ends of the valve frame 21 are connected to each other, and the through groove 221 in the second valve 4 and the two ends of the valve frame 21 are not connected;

[0041] Subsequently, using the multiple first fans 3 in the exhaust assembly, the air in the rail transit subway is sucked into the multiple sections of the air duct 1 through the multiple hollow covers 112, the air inlet pipe 111, and the air inlet 11, and is discharged through the exhaust tail pipe 14, thereby exhausting the air in the rail transit subway;

[0042] After a period of use, a lot of dust will adhere to the inner walls of the multi-section air duct 1, the air inlet 11 and the connecting elbow 13; at this time, by turning on the second motor 25 to drive the valve stem 23 in the first valve 2 to rotate, the two second bevel gears 24 are engaged and connected, driving the valve stem 23 in the second valve 4 to rotate synchronously, thereby driving the ball valve core 22 in the first valve 2 and the second valve 4 to rotate in the middle of the valve frame 21, thereby making the through groove 221 in the first valve 2 and the two ends of the valve frame 21 disconnected, and the through groove 221 in the second valve 4 and the two ends of the valve frame 21 connected to each other, the exhaust channel is opened, and the exhaust channel is closed;

[0043] Subsequently, the first motor 138 is turned on to drive the second auxiliary shaft 136 to rotate, and the two first bevel gears 137 are engaged and connected to drive the first auxiliary shaft 135 to rotate synchronously, and then the first shaft 133 and the second shaft 134 are driven to rotate synchronously. When the first shaft 133 and the second shaft 134 rotate, the corresponding third shaft 102 in the air duct 1 is driven to rotate synchronously. By controlling the rotation of the first shaft 133, the first mounting rod 1331 and the first scraper 1332 are driven to rotate, so that the first scraper 1332 is used to scrape the inner wall of the connecting elbow 13 for dust cleaning. By controlling the rotation of the second shaft 134, the second mounting rod 1341 and the second scraper 1342 are driven to rotate, so that the second scraper 1342 is used to scrape the inner wall of the connecting elbow 13 for dust cleaning. By controlling the rotation of the third shaft 102, the multiple third mounting rods 103 and the third scraper 104 are driven to rotate, so that the third scraper 104 is used to scrape the inner wall of the air duct 1 for dust cleaning.

[0044] At the same time, the second fan 7 is turned on, and the dust cleaned by scraping the inner wall of the connecting elbow 13 and the air duct 1 is introduced into the dust removal outer frame 61 through the auxiliary exhaust port 12, the second valve 4 and the L-shaped pipe 5, and is dust-removed through multiple dust removal bags 62. Subsequently, the exhaust air is introduced into the processing mechanism 8 through the second fan 7 and the auxiliary exhaust pipe 71, so as to automatically clean the dust on the inner wall of the connecting elbow 13 and the air duct 1, thereby preventing the dust from accumulating for a long time and affecting the wind environment in the rail transit subway. In addition, there is no need to disassemble the connecting elbow 13 and the air duct 1 to use special cleaning tools for in-depth cleaning, which is simple and convenient.

[0045] By removing the hollow cover 112, it is convenient to clean the inner wall of the air inlet pipe 111 and the air inlet 11;

[0046] Among them, when a fire occurs in the rail transit subway and smoke appears, the second fan 7 is directly turned on, and the smoke is sucked into the multi-section air duct 1 through the corresponding air inlet 11, and is introduced into the dust removal outer frame 61 through the auxiliary exhaust port 12, the second valve 4 and the L-shaped pipe 5, and is dust-removed through multiple dust removal bags 62. Subsequently, the exhaust air is introduced into the treatment mechanism 8 through the second fan 7 and the auxiliary exhaust pipe 71. The exhaust air introduced into the treatment mechanism 8 is introduced into the exhaust pipe 86 through the air intake pipe 85, and is evenly discharged into the smoke treatment liquid through multiple exhaust grooves 861 for smoke treatment. The treated smoke is discharged through the exhaust port 84 and the exhaust pipe 841 to prevent the smoke from being directly discharged and affecting the atmospheric environment. When the smoke treatment liquid needs to be discharged, the drain valve 831 is opened and the smoke treatment liquid is discharged through the drain pipe 83.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation system for rail transit subway construction, comprising an exhaust assembly, characterized in that: The exhaust assembly comprises an air delivery duct (1), wherein the air delivery duct (1) is provided with multiple sections, an air inlet (11) is fixedly mounted on one side of the bottom of the air delivery duct (1), an auxiliary exhaust port (12) is fixedly mounted on one side of the bottom of the air delivery duct (1) away from the air inlet (11), a first valve (2) is fixedly mounted on one end of the air delivery duct (1) close to the auxiliary exhaust port (12), a first fan (3) is fixedly mounted on one end of the first valve (2) away from the air delivery duct (1), a second valve (4) is fixedly mounted on the bottom end of the auxiliary exhaust port (12), an L-shaped duct (5) is fixedly mounted on the bottom end of the second valve (4), and the L-shaped duct (5) A dust removal component (6) is fixedly installed at one end away from the second valve (4), a second fan (7) is fixedly installed at one end of the dust removal component (6) away from the L-shaped pipe (5), an auxiliary exhaust pipe (71) is fixedly installed at one end of the second fan (7) away from the dust removal component (6), a processing mechanism (8) is fixedly installed at one end of the auxiliary exhaust pipe (71) away from the second fan (7), a connecting elbow (13) is fixedly installed between two adjacent sections of the air supply pipe (1) at the turning position, and an exhaust tail pipe (14) is provided at the end of the multiple sections of the air supply pipe (1), and the exhaust tail pipe (14) is fixedly installed at the end of the first fan (3); A first bracket (131) is fixedly mounted on one end of the connecting bend (13), and a second bracket (132) is fixedly mounted on the other end of the connecting bend (13). A first shaft (133) is rotatably mounted on the bottom of the first bracket (131). The first shaft (133) is located at the axis of the connecting bend (13). First mounting rods (1331) are fixedly mounted on both ends of the outer side of the first shaft (133). A first scraper (1332) is vertically mounted on the end of the first mounting rod (1331). A second shaft (134) is rotatably mounted on the bottom of the bracket (132), the second shaft (134) is located at the axis of the connecting elbow (13), the first shaft (133) and the second shaft (134) are vertically distributed, second mounting rods (1341) are fixedly mounted on both ends of the outer side of the second shaft (134), and second scraping strips (1342) are vertically mounted on the ends of the second mounting rods (1341), and the outer sides of the first scraping strips (1332) and the second scraping strips (1342) are in contact with the inner wall of the connecting elbow (13); A first auxiliary shaft (135) is fixedly mounted on one end of the first shaft (133) close to the second shaft (134); a second auxiliary shaft (136) is fixedly mounted on one end of the second shaft (134) close to the first shaft (133); an end of the second auxiliary shaft (136) away from the second shaft (134) is rotatably mounted on the connecting elbow (13); a first bevel gear (137) is fixedly mounted on the outer side of the end of the first auxiliary shaft (135) away from the first shaft (133) and the second auxiliary shaft (136); the two first bevel gears (137) are meshed and connected; a first motor (138) is fixedly mounted on one end of the outer wall of the connecting elbow (13) close to the second auxiliary shaft (136); and the shaft ends of the first motor (138) and the second auxiliary shaft (136) are fixedly mounted.

2. A ventilation system for rail transit subway construction according to claim 1, characterized in that: A third bracket (101) is fixedly mounted on both sides of the inner wall of the air delivery duct (1); a third shaft (102) is rotatably mounted on the bottom of the third bracket (101); a plurality of third mounting rods (103) are fixedly mounted on the outer side of the third shaft (102); third scrapers (104) are vertically mounted on the ends of the plurality of third mounting rods (103); and the outer sides of the third scrapers (104) are in contact with the inner wall of the connecting elbow (13).

3. A ventilation system for rail transit subway construction according to claim 2, characterized in that: A connecting protrusion (1343) is fixedly mounted on one end of the first shaft (133) and the second shaft (134) away from the first bevel gear (137), and the connecting protrusion (1343) is movably engaged with the end of the corresponding third shaft (102).

4. The ventilation system for rail transit subway construction according to claim 1, characterized in that: An air inlet pipe (111) is fixedly mounted on the bottom end of the air inlet (11), and a hollow cover (112) is fixedly mounted on the bottom end of the air inlet pipe (111).

5. The ventilation system for rail transit subway construction according to claim 1, characterized in that: The first valve (2) includes a valve frame (21), the two ends of which are fixedly mounted between the air delivery duct (1) and the first fan (3), respectively; a ball valve core (22) is movably mounted in the middle of the valve frame (21); a valve stem (23) is vertically mounted in the middle of the ball valve core (22); the valve stem (23) is rotatably mounted on the valve frame (21); a through groove (221) is horizontally opened in the middle of the ball valve core (22); one end of the valve stem (23) extends out of the outside of the valve frame (21) and is fixedly mounted with a second bevel gear (24).

6. A ventilation system for rail transit subway construction according to claim 5, characterized in that: The structure of the second valve (4) is the same as that of the first valve (2). The second valve (4) is fixedly installed between the auxiliary discharge port (12) and the L-shaped pipe (5) through the two ends of the valve frame (21). The through groove (221) in the first valve (2) and the two ends of the valve frame (21) are connected to each other, and the through groove (221) in the second valve (4) and the two ends of the valve frame (21) are not connected. The second bevel gears (24) in the first valve (2) and the second valve (4) are meshed and connected. A second motor (25) is fixedly installed at the top end of the valve frame (21) in the first valve (2). The driving end of the second motor (25) is fixedly installed at the top end of the corresponding valve stem (23).

7. The ventilation system for rail transit subway construction according to claim 1, characterized in that: The dust removal component (6) comprises a dust removal outer frame (61), which is fixedly installed between the L-shaped duct (5) and the second fan (7), and a plurality of dust removal bags (62) are fixedly installed in the dust removal outer frame (61).

8. The ventilation system for rail transit subway construction according to claim 1, characterized in that: The treatment mechanism (8) comprises a treatment outer cylinder (81), a liquid inlet pipe (82) is fixedly mounted on one side of the top of the treatment outer cylinder (81), a liquid inlet valve (821) is fixedly mounted on the liquid inlet pipe (82), a liquid discharge pipe (83) is fixedly mounted on one side of the bottom end of the treatment outer cylinder (81), a liquid discharge valve (831) is fixedly mounted on the liquid discharge pipe (83), an exhaust port (84) is fixedly mounted on one side of the top end of the treatment outer cylinder (81), and the end of the exhaust port (84) is fixedly mounted on one side of the top end of the treatment outer cylinder (81). An exhaust pipe (841) is fixedly installed, and an air intake pipe (85) is fixedly installed on the other side of the top of the treatment outer cylinder (81), one end of the air intake pipe (85) is fixedly installed on the end of the auxiliary exhaust pipe (71) away from the second fan (7), and the end of the air intake pipe (85) away from the auxiliary exhaust pipe (71) extends into the treatment outer cylinder (81) and is fixedly installed with an exhaust pipe (86), and the exhaust pipe (86) is provided with a plurality of evenly distributed exhaust slots (861).

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