Composite settling device

Abstract

The application provides a composite settling device, which comprises a shell, a gas guide assembly, a gas grid cylinder and an exhaust fan. The shell comprises a supporting seat and a cylinder body. A cyclonic chamber is arranged in the cylinder body, and the axis of the cyclonic chamber extends in the horizontal direction. A water flow channel is formed in the cylinder wall of the cylinder body. A water spraying opening, which is in communication with the water flow channel, is formed in the inner circumferential wall of the cylinder body. The gas guide assembly is arranged at the air inlet end of the cyclonic chamber. The gas guide assembly comprises a plurality of blades, which are arranged in sequence with the axis of the cyclonic chamber as the center. An air guide gap is formed between two adjacent blades. The axis of the gas grid cylinder is parallel to the axis of the cyclonic chamber. The gas grid cylinder is installed on the cylinder body. An exhaust passage is arranged in the gas grid cylinder. An air inlet groove is formed in the cylinder wall of the gas grid cylinder. The air inlet groove is in communication with the exhaust passage and the cyclonic chamber. The exhaust fan is installed in the gas grid cylinder and located at the end of the gas grid cylinder away from the gas guide assembly. The composite settling device can absorb dust and fog in the air while avoiding releasing a large amount of water mist into the air.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel construction, in particular, to a composite settling device for tunnel construction. BACKGROUND

[0002] With the rapid development of China's economy, the state has invested heavily in infrastructure. China is vast and complex in terrain, and the construction of highways and railways often requires the excavation of tunnels. Tunnel excavation is a complex project, and drilling and blasting methods are often used for soil and rock excavation. After the blasting of the working face, the debris and high-temperature gas, and even toxic and harmful gas, are released together. These debris and contaminated gas quickly occupy the tunnel cross-section and spread outward. For long tunnels, this pollution is difficult to control, and the pollution range is large. The low visibility of the tunnel seriously affects the construction environment of the secondary lining, inverted arch and other processes. The large amount of toxic and harmful dust floating in the air is the main cause of silicosis in tunnel construction workers.

[0003] The main measure to control pollution near the working face at present is to use a large amount of ventilation to dilute the dust concentration, increase visibility, and reduce heat dissipation. The ventilation method often requires a long time and a large amount of ventilation to control the pollution near the working face, which consumes time and energy, thereby increasing the time difference between the front and rear processes and causing great waste of resources. The ventilation machine after the blasting of the tunnel working face is generally set outside the tunnel, and a large amount of fresh air is sent into the tunnel. For long tunnels, the ventilation energy consumption is large, and the diffusion of pollutants cannot be effectively controlled.

[0004] A dust and temperature reduction device currently sprays water mist into the tunnel to make the dust settle quickly, but this method releases water mist into the entire tunnel space, which can quickly increase the humidity of the tunnel working environment, greatly reduce the service life of mechanical equipment, and easily cause electrical leakage and short circuit accidents. SUMMARY

[0005] The purpose of the present application is to provide a composite settling device that can absorb dust and mist in the air while avoiding the release of a large amount of water mist into the air, which will not cause a sudden increase in humidity in the tunnel, and does not require the use of filter screens and other consumables, which is economical and environmentally friendly.

[0006] To achieve the above object, the application provides a composite settling device, comprising: a shell, the shell comprising a support seat and a cylinder body, the cylinder body being arranged above the support seat, a cyclone chamber being arranged in the cylinder body, an axis of the cyclone chamber extending along a horizontal direction, a water flow channel being formed in a cylinder wall of the cylinder body, a water spraying opening being formed in an inner circumferential wall of the cylinder body, the water spraying opening being communicated with the water flow channel, a sewage discharge opening being formed in a bottom of the cylinder body, the sewage discharge opening being communicated with the cyclone chamber; an air guide assembly, the air guide assembly being arranged at an air inlet end of the cyclone chamber, the air guide assembly comprising a plurality of blades, the plurality of blades being arranged in sequence with the axis of the cyclone chamber as a center, an air guide gap being formed between adjacent two blades; an air grid cylinder, an axis of the air grid cylinder being parallel to the axis of the cyclone chamber, the air grid cylinder being mounted on the cylinder body, an air exhaust channel being arranged in the air grid cylinder, an air inlet groove being formed in a cylinder wall of the air grid cylinder, the air inlet groove being communicated with the air exhaust channel and the cyclone chamber; an air exhaust fan, the air exhaust fan being mounted in the air grid cylinder and located at an end of the air grid cylinder away from the air guide assembly.

[0007] As can be seen from the above scheme, during operation, the air exhaust fan is started, the airflow passes through the air guide gap between the blades, the blades deflect the airflow along the circumferential direction of the cyclone chamber and then guide the airflow into the cyclone chamber, and the airflow rotates in the cyclone chamber due to inertia after being guided into the cyclone chamber. The air exhaust fan in the air grid cylinder is the air flow power source of the composite settling device, which continuously sucks air from the cyclone chamber through the air inlet groove of the air grid cylinder. The water in the water flow channel enters the cyclone chamber through the water spraying opening and forms a ring wall water curtain along the inner circumferential wall of the cylinder body. Since the ring wall water curtain in the cyclone chamber moves along the surface, it does not form a large amount of splashing water mist, prevents liquid droplets from being released into the air, and effectively prevents the air humidity from increasing rapidly. At the same time, when the airflow repeatedly rotates in the cyclone chamber, a large amount of smoke and liquid droplets will further impact on the ring wall water curtain due to the effect of inertia, effectively absorbing and eliminating the smoke and liquid droplets, and the sewage flows into the water collecting disc below through the sewage discharge opening, so that the air can be rapidly purified without the need for filter consumables such as sponges, activated carbon and filter screens. Moreover, the composite settling device absorbs dust and mist in the air while avoiding releasing a large amount of water mist into the air, which does not cause the humidity in the tunnel to increase rapidly and does not require the use of filter screens and other consumables, which is economical and environmentally friendly. In addition, since the diameter of the air grid cylinder in the section where the rotor of the air exhaust fan is located is smaller than the diameter of the blade, i.e. smaller than the diameter of the cyclone chamber, the air exhaust fan can rotate at a high speed with smaller torque, which is conducive to reducing the load torque of the air exhaust fan motor, so that the air exhaust fan motor can more easily operate in a high efficiency state, thereby saving energy consumption.

[0008] One preferred scheme is that the air guide assembly further comprises an air guide piece, the air guide piece being conical, a generatrix of the air guide piece being arranged in line with the axis of the cyclone chamber, each blade being arranged at one end close to the bottom surface of the air guide piece and along the circumferential direction of the air guide piece, and the vertex of the air guide piece being located at the side of the blade away from the cyclone chamber.

[0009] Further, the side of the air guide is provided with air guide ribs, the air guide ribs extend spirally from the vertex of the air guide to the bottom surface of the air guide, and the air guide ribs are consistent with the rotation direction of the blades.

[0010] Therefore, the air guide is located upstream of the blades, the air guide guides the airflow from the axis to the radial outside of the pre-rotation chamber in a conical shape, and the air guide ribs force the airflow to be initially deflected, and then the blades further deflect the airflow along the circumferential direction of the pre-rotation chamber into the pre-rotation chamber, and the airflow rotates in the pre-rotation chamber due to inertia after being introduced into the pre-rotation chamber.

[0011] Further, the number of air guide ribs is two or more, and the plurality of air guide ribs are arranged along the circumferential direction of the air guide.

[0012] A preferred embodiment is that the air guide rib is provided with a water curtain strip on the side away from the side of the air guide, the water curtain strip extends along the edge of the air guide rib, the water curtain strip is provided with a water curtain strip flow channel, and the water curtain strip is provided with two or more water curtain strip water outlets in communication with the water curtain strip flow channel, and the water curtain strip flow channel is in communication with the water flow channel; and / or the leading edge of the blade is provided with a water curtain strip, the water curtain strip extends along the leading edge of the blade, the water curtain strip is provided with a water curtain strip flow channel, and the water curtain strip is provided with two or more water curtain strip water outlets in communication with the water curtain strip flow channel, and the water curtain strip flow channel is in communication with the water flow channel.

[0013] Therefore, the water curtain strip forms a water curtain on the air guide rib, and the water curtain strip on the leading edge of the blade forms a water curtain on the surface of the blade. When the airflow is forced to turn on the air guide rib and the blade, due to the fact that the density of the liquid droplets and dust is greater than the density of air, and due to inertia, part of the smoke dust will impact on the water curtain and / or the water curtain. When the airflow repeatedly rotates in the pre-rotation chamber, due to inertia, a large amount of smoke dust and liquid droplets will further impact on the water curtain on the ring wall, and the circulating water curtain / water curtain effectively absorbs and eliminates the smoke dust and liquid droplets, so that the air can be rapidly purified without the need for filter consumables such as sponges, activated carbon, and filter screens.

[0014] A preferred embodiment is that the cylinder includes an inner cylinder and an outer cylinder arranged coaxially, the outer cylinder is sleeved on the radial outside of the inner cylinder, the water flow channel is located between the inner cylinder and the outer cylinder, the water injection port penetrates the inner cylinder in the thickness direction, and the outer cylinder is provided with a water injection hole in communication with the water flow channel. The number of water injection holes is two or more, and the plurality of water injection holes are arranged along the circumferential direction of the outer cylinder, and at least one water injection hole is located at the top of the outer cylinder.

[0015] A preferred embodiment is that the cylinder is provided with a guide portion at each water injection port, the guide portion is opposite to the water injection port in the radial direction of the cylinder, and the guide portion and the inner circumferential wall of the cylinder form a drainage channel.

[0016] Therefore, through the setting of the guide part, the water curtain can be caused to adhere to the wall, because on the one hand, the water outlet is tangentially arranged, the water curtain has an initial ejection speed, and can effectively adhere to the wall under the action of centrifugal force, even if the airflow and the water curtain move in opposite directions, the water curtain can also adhere to the wall by itself. On the other hand, when the rotation direction of the airflow is consistent with that of the water curtain, the adhesion effect of the water curtain is further increased, the water pressure can be reduced, and the annular wall water curtain can also adhere to the wall well, that is, the same direction of the airflow and the water curtain can save more energy.

[0017] One preferred solution is that the two adjacent blades overlap along a part of the projection of the axis of the cyclone chamber.

[0018] Therefore, in this way, the incoming airflow can be effectively deflected, and the airflow can be prevented from directly entering the cyclone chamber along the axis of the cyclone chamber, which is conducive to ensuring the settlement of smoke and mist droplets.

[0019] One preferred solution is that the extension direction of the air inlet groove at the air inlet end of the air inlet groove and the tangent of the air grille cylinder at the air inlet end of the air inlet groove is arranged at an acute angle; the number of air inlet grooves is two or more, and the plurality of air inlet grooves are arranged along the circumference of the air grille cylinder.

[0020] Therefore, the air inlet groove extends in the direction at an acute angle with the tangent, so that the gas entering the air inlet groove can be sucked into the rotating airflow from the cyclone chamber, that is, the rotating airflow spirally enters the air grille cylinder along the radius gradually reducing in diameter, which is conducive to promoting the rotation of the airflow in the cyclone chamber and improving the settlement efficiency of smoke and mist droplets.

[0021] One preferred solution is that the rotation direction of the blade is consistent with the rotation direction of the rotor of the exhaust fan.

[0022] Therefore, in this way, the aerodynamic efficiency can be improved, and the energy consumption can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective view of an embodiment of the composite settling device of the present application.

[0024] Figure 2 is an exploded view of the structure of an embodiment of the composite settling device of the present application.

[0025] Figure 3 is an axial sectional view of an embodiment of the composite settling device of the present application.

[0026] Figure 4 is a front view of an embodiment of the composite settling device of the present application.

[0027] Figure 5 is a sectional view and a local enlarged view of an embodiment of the composite settling device of the present application.

[0028] Figure 6 is a radial sectional view of an embodiment of the composite settling device of the present application.

[0029] Figure 7 is Figure 6 is a partial enlarged view of A in FIG.

[0030] Figure 8 is Figure 6 is a partial enlarged view of B in FIG.

[0031] The application will be further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0032] Referring to Figures 1 to 3 The composite precipitation device comprises a shell 1, an air guide assembly 2, a gas grid cylinder 3, a water pump 4, a water receiving tray 5 and an exhaust fan 6.

[0033] The shell 1 comprises a support base 11 and a cylinder body 12, the cylinder body 12 is arranged above the support base 11, the cylinder body 12 comprises an inner cylinder 13 and an outer cylinder 14 arranged coaxially, the outer cylinder 14 is sleeved on the radial outer side of the inner cylinder 13, the axis of the cylinder body 12 extends along the horizontal direction, a water flow channel 15 is formed between the inner cylinder 13 and the outer cylinder 14, three water injection holes 141 are formed on the outer cylinder 14 and communicated with the water flow channel 15, and the three water injection holes 141 are arranged along the circumference of the outer cylinder 14, wherein one water injection hole 141 is located at the top of the outer cylinder 14, and the other two water injection holes 141 are respectively located at the two sides of the outer cylinder 14.

[0034] The inner cylinder 13 is provided with a cyclone chamber 131, the axis of the cyclone chamber 131 extends along the horizontal direction, a plurality of water injection ports 132 are formed on the inner cylinder 13 and arranged along the circumference of the inner cylinder 13, each water injection port 132 extends along the axial direction of the inner cylinder 13, the water injection port 132 penetrates the inner cylinder 13 in the thickness direction, and the water injection port 132 is communicated with the water flow channel 15. A plurality of guides 16 are arranged on the outer circumferential wall of the inner cylinder 13, and each guide 16 is arranged between two adjacent water injection ports 132.

[0035] As shown in FIG. Figure 5 and Figure 7As shown, the guide 16 includes a radial limiting portion 161, a first circumferential limiting portion 162, a second circumferential limiting portion 163 and a guide portion 164, the radial limiting portion 161 is attached to the outer peripheral wall of the inner cylinder 13, the first circumferential limiting portion 162 and the second circumferential limiting portion 163 are respectively arranged at two ends of the radial limiting portion 161 and are respectively folded along the radial direction of the inner cylinder 13 from the radial limiting portion 161 to the central axis side of the inner cylinder 13, the first circumferential limiting portion 162 and the second circumferential limiting portion 163 respectively extend into two adjacent water injection ports 132, the guide portion 164 is connected to the end of the second circumferential limiting portion 163 and is folded in a direction away from the corresponding radial limiting portion 161, that is, the guide portion 164 extends along the chord direction of the inner cylinder 13, the guide portion 164 is opposite to the water injection port 132 in the radial direction of the cylinder body 12, the guide portion 164 and the inner peripheral wall of the cylinder body 12 form a drainage passage 165, and the cylinder body 12 is provided with a guide portion 164 at each water injection port 132. Through the arrangement of the guide portion 164, the water flow ejected from the water injection port 132 through the drainage passage 165 can effectively adhere to the wall under the action of centrifugal force, so even if the rotation direction of the airflow in the pre-rotation chamber 131 is opposite to that of the water curtain, it does not affect the water curtain to adhere to the wall by itself, in addition, when the rotation direction of the airflow is consistent with that of the water curtain, the water curtain adhesion effect can be further increased, thereby reducing the water pressure, and the ring wall water curtain can also adhere to the wall well, that is, the airflow and the water flow in the same direction can be more energy-saving.

[0036] The air guide assembly 2 is arranged at the air inlet end of the pre-rotation chamber 131, the air guide assembly 2 includes an air guide piece 21 and a plurality of blades 22, the plurality of blades 22 are arranged in sequence with the axis of the pre-rotation chamber 131 as the center, an air guide gap 221 is formed between adjacent two blades 22, the air guide piece 21 is conical, the generatrix of the air guide piece 21 is arranged in line with the axis of the pre-rotation chamber 131, each blade 22 is arranged at one end close to the bottom surface of the air guide piece 21 and arranged along the circumferential direction of the air guide piece 21, and the vertex of the air guide piece 21 is located at the side of the blade 22 away from the pre-rotation chamber 131.

[0037] Referring to Figures 2 to 4 , the side surface of the air guide piece 21 is provided with four air guide rib plates 211, the four air guide rib plates 211 are arranged in sequence along the circumferential direction of the air guide piece 21, each air guide rib plate 211 extends in a spiral shape from the vertex close to the air guide piece 21 to the bottom surface of the air guide piece 21, and the rotation direction of the air guide rib plate 211 is consistent with that of the blade 22. In addition, the side of the air guide rib plate 211 away from the side surface of the air guide piece 21 is provided with a water curtain strip 212, the water curtain strip 212 extends along the edge of the air guide rib plate 211, the water curtain strip 212 is provided with a water curtain strip flow channel (not shown), and the water curtain strip 212 is provided with two or more water curtain strip water outlets (not shown) in communication with the water curtain strip flow channel, the water curtain strip flow channel is in communication with the water flow channel 15.

[0038] In addition, a water curtain strip 222 is provided at the leading edge of the blade 22, extending along the leading edge of the blade 22. A water curtain strip flow channel (not shown) is provided within the water curtain strip 222, and two or more water curtain strip outlets, each connected to the water curtain strip flow channel, are also provided on the water curtain strip 222. The water curtain strip flow channel is connected to the water flow channel 15. The water curtain strip 212 forms a surface-mounted water curtain on the air guide rib 211, and the water curtain strip 222 provided on the leading edge of the blade 22 thus forms a surface-mounted water curtain on the surface of the blade 22. When the airflow is forced to change direction on the air guide rib 211 and the blade 22, due to the fact that the density of the droplet dust is greater than the density of air, some of the dust will collide with the water curtain and / or the water curtain due to inertia. As the airflow rotates repeatedly within the swirling chamber 131, a large amount of smoke and droplets will continuously collide with the water curtain on the ring wall due to inertia. The circulating water curtain effectively absorbs and eliminates smoke and droplets, achieving rapid air purification without the need for filter consumables such as sponges, activated carbon, or filters.

[0039] The projections of two adjacent blades 22 along the axis of the vortex chamber 131 partially overlap. This effectively deflects the incoming flow and prevents the airflow from directly entering the vortex chamber 131 along its axis, which helps ensure the settling of smoke and droplets.

[0040] See Figure 3 , Figures 5 to 8 The air grate cylinder 3 is coaxially arranged with the inertial vortex chamber 131. The air grate cylinder 3 is mounted on the cylinder body 12. One end of the air grate cylinder 3 is located inside the inertial vortex chamber 131, and the other end extends from the end of the cylinder body 12 away from the air guide assembly 2. An exhaust channel 32 is provided inside the air grate cylinder 3. Eight air inlet slots 31 are opened on the cylinder wall of the air grate cylinder 3. The eight air inlet slots 31 are evenly arranged along the circumference of the air grate cylinder 3. The air inlet slots 31 connect the exhaust channel 32 and the inertial vortex chamber 131. From the air inlet end of the air inlet slot 31 to the air outlet end of the air inlet slot 31, the extension direction of the air inlet slot 31 is set at an acute angle to the tangent of the air grate cylinder 3 at the air inlet end of the air inlet slot 31. The air inlet groove 31 extends along an acute angle with the tangent, allowing the gas entering the air inlet groove 31 to be drawn into the rotating airflow from the vortex chamber 131. In other words, the rotating airflow spirals into the air grid cylinder 3 along a radius with a gradually decreasing diameter, which helps to promote the airflow to rotate in the vortex chamber 131 and improve the settling efficiency of smoke and dust droplets.

[0041] The exhaust fan 6 is installed inside the air grate cylinder 3 and located at the end of the air grate cylinder 3 away from the air guide assembly 2. The rotation direction of the blades 22 is consistent with the rotation direction of the rotor of the exhaust fan 6.

[0042] The bottom of the barrel 12 is provided with a sewage outlet 121, which is communicated with the cyclone chamber 131, and the water receiving tray 5 is installed below the sewage outlet 121 and inside the support seat 11. The support seat 11 is further provided with a dredging door 111 on one side, and the water pump 4 is also installed inside the support seat 11. The water outlet of the water pump 4 is communicated with the water injection hole 141 through the water supply pipe. During dredging, the water in the water flow channel 15 must be emptied first, the dredging door 111 is opened, and the water receiving tray 5 is horizontally taken out. After the water receiving tray 5 is emptied, the water receiving tray 5 is reinstalled in the support seat 11, the dredging door 111 is closed, and the water flow channel 15 is re-injected to a predetermined water level.

[0043] During operation, the exhaust fan 6 is started, the conical air guide 21 upstream of the blade 22 guides the airflow from the axis to the radial outside of the cyclone chamber 131, and forces the incoming flow to be initially deflected by the air guide rib plate 211 thereon, and then the airflow passes through the air guide gap 221 between the blades 22. The blade 22 deflects the incoming flow along the circumference of the cyclone chamber 131 and introduces it into the cyclone chamber 131. After the incoming flow is introduced into the cyclone chamber 131, it rotates in the cyclone chamber 131 due to inertia. The exhaust fan 6 in the air grid barrel 3 is the air flow power source of the composite settling device, which continuously sucks air from the cyclone chamber 131 through the air inlet groove 31 of the air grid barrel 3. At the same time, the water pump 4 pressurizes the high-pressure water source filtered by the filter screen into the water injection hole through the water supply pipe. Part of the high-pressure water source is sprayed from each water injection hole 132 after passing through the water flow channel 15 in the barrel 12 to form a ring wall water curtain covering the circumferential inner wall of the cyclone chamber 131. Another part flows into the water curtain strip 222 and the water curtain strip 212 and is discharged from the water curtain strip water outlet and the water curtain strip water outlet. Since the ring wall water curtain in the cyclone chamber 131, the water curtain on the air guide 21, and the water curtain on the blade 22 all run along the surface, a large amount of splashing water mist cannot be formed, which prevents the release of liquid droplets into the air and effectively prevents the rapid increase of air humidity. At the same time, when the airflow repeatedly rotates in the cyclone chamber 131, a large amount of smoke and liquid droplets will further impact on the ring wall water curtain, effectively absorbing and eliminating smoke and liquid droplets, and sewage flows into the water receiving tray 5 below through the sewage outlet without the need for filter materials such as sponges, activated carbon, and filter screens to achieve rapid air purification. At the same time, the composite settling device absorbs dust and mist in the air while avoiding the release of a large amount of water mist into the air, which will not cause a rapid increase in humidity in the tunnel and does not require the use of filter screens and other consumables, which is economical and environmentally friendly. In addition, since the diameter of the air grid barrel 3 in the section where the rotor of the exhaust fan 6 is located is smaller than the diameter of the blade 22, i.e. smaller than the diameter of the cyclone chamber 131, the exhaust fan 6 can rotate at high speed with smaller torque, which is conducive to reducing the load torque of the motor of the exhaust fan 6, thereby making the motor of the exhaust fan 6 more easily operate in a high-efficiency state and saving energy consumption.

[0044] In addition, the number and interval distance of the air guide ribs can be changed as required. Two or more exhaust fans can also be arranged in the air grid cylinder, and the exhaust fans are arranged along the axial direction of the air grid cylinder. Preferably, the rotation directions of the rotors of two adjacent exhaust fans are opposite, which is beneficial to further improve the exhaust efficiency. The number of water pumps can also be two or more, and the water pumps can be connected in parallel or in series. The above changes can also achieve the purpose of the present application.

[0045] Finally, it should be emphasized that the above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A composite sedimentation device, characterized in that, include: The outer shell includes a support base and a cylindrical body. The cylindrical body is disposed above the support base. The cylindrical body has a swirling chamber inside, the axis of which extends horizontally. A water flow channel is formed inside the cylindrical body wall. A water spray nozzle is formed on the inner peripheral wall of the cylindrical body and communicates with the water flow channel. A drain outlet is formed at the bottom of the cylindrical body and communicates with the swirling chamber. An air guiding assembly is disposed at the air inlet end of the inertial vortex chamber. The air guiding assembly includes multiple blades, which are arranged sequentially around the axis of the inertial vortex chamber, and an air guiding gap is formed between two adjacent blades. An air grate cylinder, the axis of which is parallel to the axis of the inertial vortex chamber, the air grate cylinder is mounted on the cylinder body, an exhaust channel is provided inside the air grate cylinder, and an air inlet groove is provided on the cylinder wall of the air grate cylinder, the air inlet groove connecting the exhaust channel and the inertial vortex chamber; An exhaust fan is installed inside the air grate and located at the end of the air grate away from the air guide assembly; The air guiding assembly also includes an air guiding element, which is conical in shape. The generatrix of the air guiding element is collinear with the axis of the inertial vortex chamber. Each of the blades is located at one end near the bottom surface of the air guiding element and is arranged along the circumference of the air guiding element. The apex of the air guiding element is located on the side of the blade away from the inertial vortex chamber. The air guide component has an air guide rib on its side, and a water curtain strip is provided on the side of the air guide rib away from the air guide component. The water curtain strip extends along the edge of the air guide rib, and a water curtain strip channel is provided within the water curtain strip. The water curtain strip also has two or more water curtain strip outlets, each communicating with the water curtain strip channel. The water curtain strip channel is connected to the water flow channel; and / or The leading edge of the blade is provided with a water curtain strip, which extends along the leading edge of the blade. A water curtain strip flow channel is provided inside the water curtain strip. Two or more water curtain strip outlets are also provided on the water curtain strip, which are all connected to the water curtain strip flow channel. The water curtain strip flow channel is connected to the water flow channel. During operation, the exhaust fan starts, and the airflow passes through the air guide gap. The blades deflect the incoming flow around the circumference of the inertial vortex chamber and guide it into the inertial vortex chamber. After the incoming flow enters the inertial vortex chamber, it rotates in the inertial vortex chamber due to inertia. The water in the water flow channel enters the inertial vortex chamber through the water spray nozzle and forms an annular water curtain along the inner circumferential wall of the cylinder.

2. The composite sedimentation device according to claim 1, characterized in that: The air guide rib extends spirally from the apex of the air guide towards the bottom surface of the air guide, and the air guide rib has the same rotation direction as the blade.

3. The composite sedimentation device according to claim 2, characterized in that: The number of air guide ribs is two or more, and the multiple air guide ribs are arranged at intervals along the circumference of the air guide component.

4. The composite sedimentation device according to any one of claims 1 to 3, characterized in that: The cylinder includes an inner cylinder and an outer cylinder arranged coaxially. The outer cylinder is sleeved on the radially outer side of the inner cylinder. The water flow channel is located between the inner cylinder and the outer cylinder. The water spray nozzle penetrates the inner cylinder in the thickness direction. The outer cylinder has a water injection hole that communicates with the water flow channel. The number of water injection holes is two or more, and the plurality of water injection holes are arranged along the circumference of the outer cylinder, with at least one water injection hole located at the top of the outer cylinder.

5. The composite sedimentation device according to any one of claims 1 to 3, characterized in that: The cylinder is provided with a guide portion at each of the spray nozzles. The guide portion and the spray nozzle are opposite each other in the radial direction of the cylinder, and a flow channel is formed between the guide portion and the inner peripheral wall of the cylinder.

6. The composite sedimentation device according to any one of claims 1 to 3, characterized in that: The projections of two adjacent blades along the axis of the inertial chamber partially overlap.

7. The composite sedimentation device according to any one of claims 1 to 3, characterized in that: From the air inlet end to the air outlet end of the air inlet groove, the extending direction of the air inlet groove is set at an acute angle to the tangent of the air grid cylinder at the air inlet end of the air inlet groove. The number of air intake slots is two or more, and the multiple air intake slots are arranged circumferentially along the air grid cylinder.

8. The composite sedimentation device according to any one of claims 1 to 3, characterized in that: The direction of rotation of the blades is the same as the direction of rotation of the exhaust fan rotor.

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