A dust removal device and method for a water film guide plate of a main ventilation fan for a mine

Abstract

The invention relates to the technical field of dust removal for ventilators, and discloses a water film guide plate dust removal device and method for a main ventilator for a mine, the device comprising a dust removal shell, a water supply pipeline, a water film guide plate group and a sewage pipe, the ventilation duct between the air inlet and the air outlet of the dust removal shell is in an arc structure, the water film guide plate group divides the ventilation duct into a plurality of arc ventilation channels; the output end of the water supply pipeline outputs a mixed liquid through the two ends of the water film guide plate group correspondingly arranged on both sides of the dust removal shell to form a water film; the sewage pipe is connected with the water film guide plate group in the dust removal shell and extends to the outside of the dust removal shell; in the invention, dust particles collide with the water film guide plate group along the air flow direction under the action of inertia force and are captured by the water film, and the dust particles flow toward the sewage pipe under the action of gravity, thereby improving the separation of dust particles and gas, and the gas after dust removal is discharged to the air outlet through the water film guide plate group, thereby achieving dust removal and reducing the outlet resistance loss of the ventilator.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal for ventilators, and in particular to a dust removal device and method for a water film guide plate of a main ventilator for a mine. Background Art

[0002] With the whole society's requirements for occupational health and environmental protection, the dust control around the main ventilation fan outlet of mines has increasingly attracted the attention of business owners and surrounding residents. Therefore, low-cost, stable and reliable control of the dust concentration at the fan outlet has gradually become a rigid demand.

[0003] The main measures for dust removal at the outlet of the conventional main fan in coal mines are as follows:

[0004] 1. Utilize the airflow inertia of the fan exhaust port and change the movement direction of the mixed dust airflow through gravity dust removal technology, so that the dust particles collide with the wall, separate the dust particles from the airflow, and rely on gravity to naturally settle to the ground, thus achieving the purpose of dust reduction;

[0005] 2. By adding a spray method around the diffusion tower at the fan outlet, the dust-laden airflow is combined with the water mist, and the large particles of dust are settled by gravity to the area around the fan outlet.

[0006] 3. Use wet dust removal technology to set one or more water curtains at the front end of the fan inlet to combine large dust particles with water mist to capture large dust particles. Rely on gravity to make the dust-containing water droplets fall to the gas forward direction of the water curtain, or enter the fan flow channel, flow out of the fan through the fan outlet, and settle in the area around the fan outlet under the action of gravity.

[0007] However, in the application of inertial gravity dust removal technology at the outlet of the main fan, the airflow direction needs to be changed so that the dust-containing gas collides with the wall surface and thus achieves the purpose of gravity dust removal. Therefore, it will cause the fan to produce very high resistance loss, greatly increasing the proportion of useless work of the fan, thereby significantly increasing the cost of using the fan.

[0008] Adding water mist nozzles around the fan outlet diffusion tower can play a certain role in combining dust with water mist, but due to the high air velocity at the main fan outlet, the high-speed dust-laden airflow cannot fully combine with the water mist, so the dust removal efficiency cannot be guaranteed. Thirdly, large dust particles that are fully combined with the water mist will still drift around the fan outlet due to gravity. As the water evaporates, the dust will drift into the air again, and the dust problem cannot be completely solved.

[0009] When one or more water curtains are set in the tunnel in front of the fan air inlet to treat the dust in the airflow entering the main fan, the moisture in the tunnel will increase significantly. After the water and dust are mixed, dust mud and coal slime are easily formed, making the tunnel inspection difficult. At the same time, the dust captured by the water mist will increase the corrosion and damage to the inner side of the fan barrel wall, the fan impeller, the motor, etc. after passing through the fan housing, reducing the service life of the fan. After some dust-containing water mist particles are discharged from the main fan through the exhaust port, they fall to the vicinity of the fan exhaust port due to gravity. After the water evaporates, the dust will still be blown into the air, which cannot fundamentally reduce the dust concentration at the fan outlet.

[0010] Through the above analysis, it can be seen that conventional coal mine main fan exhaust vents have various drawbacks in dust removal management, which affects the overall operating effect or operating cost. Summary of the invention

[0011] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a water film guide plate dust removal device and method for a mine main ventilation fan, so as to solve the technical problem in the prior art of how to effectively ensure the dust removal effect and avoid secondary pollution without increasing the energy consumption of the main fan.

[0012] The present invention is achieved through the following technical solutions:

[0013] In a first aspect, the present invention provides a water film guide plate dust removal device for a main ventilation fan for a mine, comprising a dust collector body; the dust collector body comprises a dust removal shell, a water delivery pipeline, a water film guide plate group and a sewage discharge pipe; the ventilation duct between the air inlet and the air outlet of the dust removal shell is an arc-shaped structure;

[0014] The water film guide plate group includes a plurality of drainage film guide plate units arranged in parallel in a radial direction of the ventilation duct, and the plurality of drainage film guide plate units divide the ventilation duct into a plurality of arc-shaped ventilation channels, and both ends of the plurality of drainage film guide plate units are fixed on the inner side wall of the dust removal housing;

[0015] The water delivery pipeline is arranged on both sides of the outer periphery of the dust removal shell, and the output ends of the water delivery pipeline are respectively arranged at both ends of a plurality of drainage membrane guide plate units through the outer periphery of the dust removal shell, so as to output the mixed liquid on the plate surface of the plurality of drainage membrane guide plate units to form a water film;

[0016] The drain pipe is arranged along the radial direction of the ventilation duct and is connected with several drainage membrane guide plate units in sequence, and the output end of the drain pipe extends to the outside of the dust removal shell, which is used to discharge the mixed liquid on the plate surface of several drainage membrane guide plate units to the outside of the dust removal shell in sequence.

[0017] Preferably, the water film guide plate unit comprises two groups of water film guide plates;

[0018] Two groups of water film guide plates are arranged side by side in the ventilation duct; one end of one group of water film guide plates is fixed on the inner wall of one side of the dust removal shell, and one end of the other group of water film guide plates is fixed on the inner wall of the other side of the dust removal shell;

[0019] The sewage pipe is arranged between the two groups of water film guide plates, and sewage holes are arranged on both sides of the sewage pipe at the bottom positions corresponding to the two groups of water film guide plates, which are used to transport the mixed liquid on the two groups of water film guide plates to the sewage pipe through the sewage holes, wherein the plate surfaces of the two groups of water film guide plates are inclined toward the sewage pipe;

[0020] The output ends of the water delivery pipeline are arranged on the tops of the two groups of water film guide plates through both sides of the outer periphery of the dust removal shell.

[0021] Furthermore, a blocking plate is provided at the connection between the water film guide plate and the inner wall of the dust removal shell to prevent the mixed liquid on the surface of the water film guide plate from overflowing along the gap of the inner wall of the dust removal shell.

[0022] Furthermore, the plate surface of the water film guide plate is a concave surface, and the top and bottom of the water film guide plate are respectively U-shaped groove structures;

[0023] The output end of the water delivery pipeline is arranged in the U-shaped groove structure at the top of the water film guide plate through both sides of the outer periphery of the dust removal shell; the sewage discharge hole of the sewage discharge pipe is correspondingly arranged at the U-shaped groove structure at the bottom of the water film guide plate.

[0024] Furthermore, the water pipeline includes a water pipe;

[0025] One end of the water delivery pipe is connected to the water delivery device, and the other end is an output end, wherein the output end is branched into two groups of water delivery branch pipes;

[0026] Two groups of water supply branches are respectively arranged on both sides of the periphery of the dust removal shell, wherein each group of water supply branches is connected to a number of water outlet pipes, and the several water outlet pipes are all arranged in a U-shaped groove structure on the top of a number of drainage membrane guide plates through the dust removal shell, and are used to output the mixed liquid on the plate surface of the several drainage membrane guide plates to form a water film, wherein the length of the water outlet pipe corresponds to the width of the water film guide plate.

[0027] Furthermore, a plurality of first through holes are provided at the top of the water outlet pipe for outputting the mixed liquid to the U-shaped groove structure at the top of the water film guide plate;

[0028] A plurality of second through holes are provided at the bottom of the water outlet pipe, which are used to output the mixed liquid to the plate surface of the water film guide plate to form a water film.

[0029] Furthermore, the water delivery device is a water storage tank; the water storage tank is located outside the dust removal housing;

[0030] The water tank is provided with an output port and an input port, one end of the water pipe extends into the output port, and the mixed liquid in the water tank is pumped into the water pipe by a water pump; the output end of the sewage pipe extends to the input port through the dust removal shell, and is used to discharge the mixed liquid on the water film guide plate into the water tank.

[0031] Further, a number of baffles are provided in the sewage pipe;

[0032] A plurality of baffles are correspondingly arranged at the upstream of each sewage discharge hole, each baffle is horizontally arranged in the sewage discharge pipe, and each sewage discharge hole is located directly below the corresponding baffle.

[0033] Preferably, a water collecting tank is provided at the bottom of the dust removal housing;

[0034] Drain pipes are respectively arranged on both sides of the water collecting tank through the two side walls of the dust removal shell;

[0035] A plurality of reinforcing ribs are arranged in the water collecting tank; each reinforcing rib is provided with a third through hole, which is used to allow the mixed liquid between adjacent reinforcing ribs to flow to the drain pipe through the third through hole and be discharged.

[0036] In a second aspect, the present invention provides a method for removing dust from a water film guide plate of a main ventilation fan for a mine, based on the above-mentioned device for removing dust from a water film guide plate of a main ventilation fan for a mine, comprising the following steps:

[0037] The mixed liquid in the water delivery pipeline is output to each row of membrane guide plate units, so that a layer of water film is formed on the plate surface of each row of membrane guide plate units; when the high-speed moving dust gas enters the ventilation duct through the air inlet, the dust hits the plate surface of each row of membrane guide plate units along the air flow direction under the action of inertia force, and the dust particles in the dust gas contact with the water film on the plate surface and adhere to the water film, flow into the sewage pipe along the movement direction of the water film on the plate surface, and are discharged through the sewage pipe;

[0038] The gas after dust particle separation is guided to the air outlet through the arc-shaped ventilation channel between each row of membrane guide plate units for discharge.

[0039] Compared with the prior art, the present invention has the following beneficial technical effects:

[0040] The present invention provides a water film guide plate dust removal device for a main ventilation fan for a mine. The ventilation duct between the air inlet and the air outlet of the dust removal shell is in an arc-shaped structure. A plurality of drainage film guide plate units are arranged in parallel in sequence along the radial direction of the ventilation duct, so that the dust particles entering the air inlet can fully collide with the plurality of drainage film guide plate units. The plurality of drainage film guide plate units divide the ventilation duct into a plurality of arc-shaped ventilation channels, so that the separated gas is guided to the air outlet through the plurality of arc-shaped ventilation channels. The water supply pipeline is arranged on both sides of the periphery of the dust removal shell, and the output ends of the water supply pipeline are respectively arranged on a plurality of arc-shaped ventilation channels on both sides of the periphery of the dust removal shell. At both ends of the dry drainage membrane guide plate unit, a mixed liquid is output on the plate surface of several drainage membrane guide plate units to form a water film, so that large particle impurities in the dust gas collide with the plate surface of the water film guide plate unit. Due to the change in the movement direction of the dust gas, the dust particles collide with the wall and are captured by the water film, and are discharged to the outside of the dust removal shell through the drain pipe along the movement direction of the water film on the plate surface, effectively avoiding the technical problem of dust-containing water mist particles corroding the main fan motor and the fan impeller. At the same time, the dust-removed airflow is discharged from the air outlet through several drainage membrane guide plate units that conform to the fluid mechanics design concept, reducing the outlet resistance loss of the fan.

[0041] Furthermore, the water film guide plate unit includes two groups of water film guide plates; the two groups of water film guide plates are arranged side by side in the ventilation duct; one end of one group of water film guide plates is fixed on the inner wall on one side of the dust removal shell, and one end of the other group of water film guide plates is fixed on the inner wall on the other side of the dust removal shell, which effectively improves the stability of the two groups of water film guide plates in the dust removal shell when assembled; the drain pipe is arranged between the two groups of water film guide plates, and drain holes are provided on both sides of the drain pipe corresponding to the bottom positions of the two groups of water film guide plates, which are used to transport the mixed liquid on the two groups of water film guide plates into the drain pipe through the drain holes, and can effectively transport the mixed liquid on the two groups of water film guide plates into the drain pipe through the drain holes, wherein the plate surfaces of the two groups of water film guide plates are inclined toward the drain pipe, so as to facilitate guiding the water film on the plate surface into the drain holes.

[0042] Furthermore, a blocking plate is provided at the connection between the water film guide plate and the inner wall of the dust collector shell to prevent the mixed liquid on the surface of the water film guide plate from overflowing along the gap of the inner wall of the dust collector shell, thereby effectively reducing the risk of water stains inside the dust collector shell and affecting the working performance of the dust collector body.

[0043] Furthermore, the plate surface of the water film guide plate is concave, and the top and bottom of the water film guide plate are respectively U-shaped groove structures; the output end of the water supply pipeline is arranged in the U-shaped groove structure on the top of the water film guide plate through the outer sides of the dust removal shell, which can effectively wrap the output end of the water supply pipeline, protect the output end of the water supply pipeline, and buffer the water speed output from the output end of the water supply pipeline, so that the water flow slowly adheres to the water film guide plate; the sewage hole of the sewage pipe is arranged at the U-shaped groove structure at the bottom of the water film guide plate, and the U-shaped groove structure at the bottom of the water film guide plate can effectively receive the mixed liquid on the water film guide plate, and transport the mixed liquid to the sewage hole to avoid overflow of the mixed liquid.

[0044] Furthermore, one end of the water pipe is connected to the water delivery device, and the other end is the output end, wherein the output end is branched into two groups of water branch pipes; the two groups of water branch pipes are respectively arranged on both sides of the periphery of the dust removal shell, wherein each group of water branch pipes is connected to a number of water outlet pipes, and the several water outlet pipes are all arranged in a U-shaped groove structure on the top of a number of drainage membrane guide plates corresponding to the dust removal shell, and are used to output the mixed liquid on the plate surface of the several drainage membrane guide plate units to form a water film, wherein the length of the water outlet pipe corresponds to the width of the water film guide plate, effectively forming a water film on the water film guide plate as a whole, greatly increasing the contact area between the dust gas and the water film guide plate, and improving the dust removal effect.

[0045] Furthermore, a plurality of first through holes are provided at the top of the water outlet pipe, and a plurality of second through holes are provided at the bottom of the water outlet pipe, so as to ensure that the dust gas can fully contact with the water film guide plate and effectively separate the dust particles in the dust gas.

[0046] Furthermore, the water tank is provided with an output port and an input port, one end of the water pipe extends into the output port, and the mixed liquid in the water tank is pumped into the water pipe by a water pump; the output end of the sewage pipe extends to the input port through the dust removal shell, and is used to discharge the mixed liquid on the water film guide plate into the water tank. The discharged mixed liquid can be collected by the water tank and circulated and pumped into the water pipe, thereby achieving the recycling of the mixed liquid.

[0047] Furthermore, a plurality of baffles are provided in the sewage pipe; the plurality of baffles are correspondingly arranged at the upstream of each sewage hole, each baffle is horizontally arranged in the sewage pipe, and each sewage hole is located directly below the corresponding baffle, so as to prevent the mixed liquid discharged from the upstream from flowing back into the downstream sewage hole and causing the accumulation of the mixed liquid, and effectively ensure that the mixed liquid in each sewage hole can flow out along the sewage pipe in sequence.

[0048] Furthermore, a water collecting trough is provided at the bottom of the dust collecting shell; drainage pipes are provided on both sides of the water collecting trough through the two side walls of the dust collecting shell respectively; a number of reinforcing ribs are separated and arranged in the water collecting trough; each reinforcing rib is provided with a through hole for allowing the mixed liquid between adjacent reinforcing ribs to flow to the drainage pipe through the through hole and be discharged, so as to collect and drain the water stains remaining at the bottom of the dust collecting shell, thereby avoiding the residual water stains in the dust collecting shell and affecting the operation of the equipment.

[0049] The present invention also provides a method for removing dust from a water film guide plate of a main ventilation fan for a mine, wherein the mixed liquid in the water delivery pipeline is output to each row of film guide plate units, so that a layer of water film is formed on the plate surface of each row of film guide plate units; when the high-speed moving dust gas enters the ventilation duct through the air inlet, the dust particles collide with the water film guide plate group along the air flow direction under the action of inertial force and are captured by the water film, and the dust particles flow along the water film to the drain pipe under the action of gravity, thereby improving the separation of dust particles and gas, and the gas after dust removal is discharged to the air outlet through the water film guide plate group designed in accordance with fluid mechanics, thereby reducing the outlet resistance loss of the fan. The present invention realizes the effective capture of the dust at the outlet of the fan and the effective collection of the mixture containing dust, water, etc., without substantially increasing the energy consumption of the main fan, and ensures the effective discharge of the mixed liquid through the drain pipe while ensuring effective dust removal, thereby avoiding the risk of secondary dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the structure of the dust removal device in the first perspective according to an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of the structure of the dust removal device according to an embodiment of the present invention from a second viewing angle;

[0052] Figure 3 A top view of a dust removal device in an embodiment of the present invention;

[0053] Figure 4 for Figure 3 Sectional view of part A;

[0054] Figure 5 for Figure 4 Sectional view of part B;

[0055] Figure 6 for Figure 4 The enlarged schematic diagram of part C in the middle;

[0056] Figure 7 for Figure 4 The enlarged schematic diagram of part D in the middle;

[0057] Figure 8 This is a schematic diagram of the water delivery pipeline structure in an embodiment of the present invention;

[0058] Fig. 9 for Figure 8 The enlarged schematic diagram of part E in the middle;

[0059] Fig.10 This is a schematic diagram of the connection between the water delivery pipeline and the water film guide plate group in an embodiment of the present invention;

[0060] Fig.11 This is a schematic diagram of the overall connection structure between the dust removal device and the ventilator in an embodiment of the present invention;

[0061] In the figure: 1. dust collector body; 2. dust collector shell; 3. water storage tank; 4. air inlet; 5. air outlet; 6. water film guide plate group; 7. water supply branch pipe; 8. water collecting tank; 9. reinforcing ribs; 10. drain pipe; 11. ventilation duct; 12. sewage pipe; 13. water supply pipe; 14. blocking plate; 15. ventilator; 61. water film guide plate unit; 611. water film guide plate; 71. water outlet pipe; 711. first through hole; 712. second through hole; 121. baffle; 122. sewage hole. DETAILED DESCRIPTION

[0062] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 creative work should fall within the scope of protection of the present invention.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0064] The purpose of the present invention is to provide a dust removal device and method for a water film guide plate of a main ventilation fan for a mine, so as to solve the technical problem in the prior art of how to effectively ensure the dust removal effect and avoid secondary pollution without increasing the energy consumption of the main fan.

[0065] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0066] Example 1

[0067] See also Fig.11 In one embodiment of the present invention, a water film guide plate dust removal device for a main ventilation fan for a mine is provided, wherein the water film guide plate dust removal device is mounted at the air outlet of the ventilation fan 15, wherein according to Figure 1 and Figure 2 As shown, the water film guide plate dust removal device includes a dust collector body 1.

[0068] The dust collector body 1 includes a dust removal shell 2, a water delivery pipeline, a water film guide plate group 6 and a sewage pipe 12; the ventilation duct 11 between the air inlet 4 and the air outlet 5 of the dust removal shell 2 is an arc-shaped structure.

[0069] according to Figure 3 and Figure 4 As shown, the water film guide plate group 6 includes a plurality of drainage film guide plate units 61 arranged in parallel in sequence along the radial direction of the ventilation duct 11, and the plurality of drainage film guide plate units 61 divide the ventilation duct 11 into a plurality of arc-shaped ventilation channels, and both ends of the plurality of drainage film guide plate units 61 are fixed on the inner wall of the dust removal shell 2.

[0070] The water supply pipeline is arranged on both sides of the periphery of the dust removal shell 2, and the output ends of the water supply pipeline are respectively arranged at the two ends of several drainage membrane guide plate units 61 through the two sides of the periphery of the dust removal shell 2, so as to output the mixed liquid on the plate surface of the several drainage membrane guide plate units 61 to form a water film.

[0071] The drain pipe 12 is arranged along the radial direction of the ventilation duct 11, and is connected to several drainage membrane guide plate units 61 in sequence, and the output end of the drain pipe 12 extends to the outside of the dust removal shell 2, which is used to discharge the mixed liquid on the surface of several drainage membrane guide plate units 61 to the outside of the dust removal shell 2 in sequence.

[0072] The principle of this embodiment is as follows:

[0073] The fan 15 delivers the dust gas into the air inlet 4 of the dust removal shell 2 through its air outlet port. Under the action of the airflow, the dust gas enters the ventilation duct 11 in the dust removal shell 2, and the water delivery pipeline outputs the mixed liquid to each row of water film guide plate units 61, forming a continuous water film on the plate surface. The dust-containing gas flows at a high speed in the ventilation duct 11, collides with the plate surface of the water film guide plate unit 61 and contacts with the water film. By utilizing the inertial collision principle of dust particles, the dust particles are captured by the water film and attached to the water film, and slide down along the inclined surface of the water film guide plate unit 61 under the action of gravity, and are discharged through the drain pipe 12. At the same time, the gas after the dust particles are separated passes through the arc-shaped ventilation channel between each row of water film guide plate units 61, flows toward the air outlet 5, and is finally discharged from the air outlet 5.

[0074] Specifically, the water film guide plate unit 61 includes two groups of water film guide plates 611 .

[0075] Two groups of water film guide plates 611 are arranged side by side in the ventilation duct 11; one end of one group of water film guide plates 611 is fixed on the inner wall of one side of the dust removal shell 2, and one end of the other group of water film guide plates 611 is fixed on the inner wall of the other side of the dust removal shell 2.

[0076] according to Figure 5 As shown, the drain pipe 12 is arranged between the two groups of water film guide plates 611, and drain holes 122 are provided at the bottom positions of the two groups of water film guide plates 611 on both sides of the drain pipe 12, corresponding to the two groups of water film guide plates 611, for conveying the mixed liquid on the two groups of water film guide plates 611 to the drain pipe 12 through the drain holes 122, wherein the plate surfaces of the two groups of water film guide plates 611 are inclined toward the drain pipe 12; the output ends of the water supply pipeline are arranged on the tops of the two groups of water film guide plates 611 through both sides of the periphery of the dust removal shell 2.

[0077] The principle of this embodiment is as follows:

[0078] Two groups of water film guide plates 611 are arranged side by side in the ventilation duct 11; one end of one group of water film guide plates 611 is fixed to the inner wall of one side of the dust removal housing 2, and one end of the other group of water film guide plates 611 is fixed to the inner wall of the other side of the dust removal housing 2. This layout ensures that the width of the entire ventilation duct 11 is effectively utilized, thereby improving the dust removal efficiency. The water delivery pipeline is located on both sides of the outer periphery of the dust removal housing 2, and its output end passes through the dust removal housing 2 and is arranged on the ends of the two groups of water film guide plates 611. When the system is started, the mixed liquid is evenly transported to the two groups of water film guide plates 611 through the water delivery pipeline, and a continuous water film is formed on the water film guide plates 611.

[0079] The dust-laden gas enters the ventilation duct 11 under the action of the ventilator 15 and hits the water film guide plate 611 at high speed. In this process, the dust particles collide with the plate surface of the water film guide plate 611, and are captured by the water film and attached to the water film. Due to the inclined design of the water film guide plate 611, the water film will flow along the plate surface to the drain hole 122. The gas separated from the dust particles flows toward the air outlet 5 through the arc-shaped ventilation channel between each row of the water film guide plate units 61, and is finally discharged from the air outlet 5.

[0080] A blocking plate 14 is provided at the connection between the water film guide plate 611 and the inner wall of the dust removal shell 2 to prevent the mixed liquid on the surface of the water film guide plate 611 from overflowing along the gap of the inner wall of the dust removal shell 2.

[0081] The principles of this embodiment are as follows:

[0082] The blocking plate 14 is arranged at the connection between the water film guide plate 611 and the inner wall of the dust removal shell 2. Its function is to close the gap between the two to prevent the mixed liquid from overflowing to the outside of the ventilation duct 11 or other areas inside the dust removal shell 2 during the flow process.

[0083] Specifically, the plate surface of the water film guide plate 611 is concave, and the top and bottom of the water film guide plate 611 are respectively U-shaped groove structures; the output end of the water delivery pipeline is arranged in the U-shaped groove structure at the top of the water film guide plate 611 through both sides of the outer periphery of the dust removal housing 2, such as Figure 7 As shown; the drainage hole 122 of the drainage pipe 12 is correspondingly arranged at the U-shaped groove structure at the bottom of the water film guide plate 611.

[0084] The structural principle of this embodiment is as follows:

[0085] The surface of the water film guide plate 611 is concave, which increases the surface area of ​​the plate surface, making the contact area between the water film and the dust particles larger, and at the same time facilitating the diversion of the dust-containing mixed liquid to the drain pipe 12; the output end of the water pipeline passes through the dust removal housing 2 and is directly set in the U-shaped groove structure on the top of the water film guide plate 611, so that the mixed liquid can be evenly distributed in the U-shaped groove and flow down along the concave plate surface to form a continuous and stable water film. The drain hole 122 of the drain pipe 12 corresponds to the U-shaped groove structure at the bottom of the water film guide plate 611. This design facilitates the smooth discharge of the mixed liquid and dust-containing water droplets accumulated at the bottom into the drain pipe 12, reducing the possibility of poor drainage.

[0086] Specifically, according to Figure 8 As shown, the water delivery pipeline includes a water delivery pipe 13; one end of the water delivery pipe 13 is connected to the water delivery device, and the other end is an output end, wherein the output end is branched into two groups of water delivery branches 7; the two groups of water delivery branches 7 are respectively arranged on both sides of the outer periphery of the dust removal housing 2, as shown in FIG. Fig.10 As shown, each group of water delivery branch pipes 7 is connected to a plurality of water outlet pipes 71, and the plurality of water outlet pipes 71 are arranged in a U-shaped groove structure on the top of a plurality of drainage membrane guide plates 611 through the dust removal housing 2, and are used to output the mixed liquid on the plate surface of the plurality of drainage membrane guide plate units 61 to form a water film, wherein the length of the water outlet pipe 71 corresponds to the width of the water film guide plate 611, as shown in FIG. Figure 6 shown.

[0087] The principle of this embodiment is as follows:

[0088] When the water delivery device is started, the mixed liquid is delivered to the inside of the dust removal housing 2 through the water delivery pipe 13. The mixed liquid flows in the water delivery pipe 13, and branches to two groups of water delivery branches 7 after reaching the output end, and flows to the two sides of the dust removal housing 2 respectively. The water outlet pipe 71 on each group of water delivery branches 7 starts to work, and evenly outputs the mixed liquid to the U-shaped groove structure at the top of the corresponding water film guide plate 611. Since the length of the water outlet pipe 71 corresponds to the width of the water film guide plate 611, the mixed liquid can cover the entire top of the water film guide plate 611, forming a uniform water film, flowing down along the concave plate surface of the water film guide plate 611 to the U-shaped groove structure at the bottom of the water film guide plate 611, and then accumulating and flowing to the drain pipe 12 through the drain hole 122.

[0089] Among them, according to Fig. 9 As shown, a plurality of first through holes 711 are provided at the top of the water outlet pipe 71 for outputting the mixed liquid to the U-shaped groove structure at the top of the water film guide plate 611; a plurality of second through holes 712 are provided at the bottom of the water outlet pipe 71 for outputting the mixed liquid to the plate surface of the water film guide plate 611 to form a water film.

[0090] The principle of this embodiment is as follows:

[0091] The first through hole 711 is located at the top of the water outlet pipe 71, and is used to output the mixed liquid to the U-shaped groove structure at the top of the water film guide plate 611, ensuring that the mixed liquid can be evenly distributed in the U-shaped groove to provide sufficient mixed liquid for the formation of the water film. The second through hole 712 is located at the bottom of the water outlet pipe 71, close to the plate surface of the water film guide plate 611, and is used to further output the mixed liquid to the plate surface of the water film guide plate 611 to form a continuous and stable water film.

[0092] Specifically, the water delivery device is a water storage tank 3 ; the water storage tank 3 is located outside the dust removal housing 2 .

[0093] The water tank 3 is provided with an output port and an input port, one end of the water pipe 13 extends into the output port, and the mixed liquid in the water tank 3 is pumped into the water pipe 13 by a water pump; the output end of the sewage pipe 12 extends to the input port through the dust removal shell 2, and is used to discharge the mixed liquid on the water film guide plate 611 into the water tank 3.

[0094] The principle of this embodiment is as follows:

[0095] The output end of the sewage pipe 12 extends into the input port of the water tank 3. Therefore, the used or recycled mixed liquid is discharged into the water tank 3 through the sewage pipe 12, so that the mixed liquid can be collected and recycled, thereby improving the resource utilization efficiency. One end of the water delivery pipe 13 extends into the output port of the water tank 3. Through the action of the water delivery pump, the mixed liquid in the water tank 3 is pumped into the water delivery pipe 13, and then can be recycled.

[0096] Specifically, according to Figure 7 As shown, a plurality of baffles 121 are provided in the sewage pipe 12 .

[0097] A plurality of baffles 121 are correspondingly arranged at the upstream of each sewage hole 122 . Each baffle 121 is horizontally arranged in the sewage pipe 12 , and each sewage hole 122 is located directly below the corresponding baffle 121 .

[0098] The principle of this embodiment is as follows:

[0099] The baffles 121 are arranged at the upstream of the drainage hole 122. When the water flows through the drainage pipe 12, it will encounter these baffles 121 and be forced to change the direction or speed of the water flow. The existence of the baffles 121 slows down the flow rate of the water flow, so that the water flow can be more fully dispersed and stabilized before passing through the drainage hole 122, and at the same time prevents the mixed liquid discharged from the upstream from flowing back into the downstream drainage hole 122 to cause the accumulation of the mixed liquid, effectively ensuring that the water in each drainage hole 122 can flow out along the drainage pipe 12 in sequence.

[0100] Specifically, a water collecting trough 8 is provided at the bottom of the dust removal shell 2; drainage pipes 10 are provided on both sides of the water collecting trough 8 through the two side walls of the dust removal shell 2; a number of reinforcing ribs 9 are separated and arranged in the water collecting trough 8; each reinforcing rib 9 is provided with a third through hole, which is used to allow the mixed liquid between adjacent reinforcing ribs 9 to flow to the drainage pipe 10 through the third through hole and be discharged.

[0101] In summary, the present embodiment provides a kind of water film guide plate dust removal device for the main ventilation fan of the mine, the dust gas enters from the air inlet 4 of the dust removal shell 2, and then enters the ventilation duct 11, the water supply pipeline is arranged on both sides of the outer periphery of the dust removal shell 2, and the output end of the water supply pipeline is respectively arranged at the two ends of a plurality of drainage film guide plate units 61 through the outer periphery of the dust removal shell 2. The mixed liquid is transported to the water film guide plate unit 61 through these pipelines, and output on its plate surface to form a continuous water film. The water film guide plate group 6 is composed of a plurality of water film guide plate units 61 arranged obliquely, and the radial direction of these units ventilation duct 11 is arranged in parallel in sequence, which is helpful for the dust entering the air inlet 4 to collide with the water film guide plate and be captured after the remaining clean gas is discharged smoothly and with low resistance. When the dust-containing gas passes through the water film guide plate unit 61 at high speed, the dust particles hit the plate surface of the water film guide plate unit 61 and are captured by the water film to achieve dust purification. The drain pipe 12 is arranged along the radial direction of the ventilation duct 11, and is connected with several drainage membrane guide plate units 61 in sequence. The mixed liquid after the water film dust removal flows along the drainage membrane guide plate unit 61 to the drain pipe 12, and is finally discharged through the output end of the drain pipe 12. The gas after the dust particles are separated is guided to the air outlet 5 through the arc ventilation channel between each drainage membrane guide plate unit 61 for discharge. This embodiment can efficiently remove dust particles in the dust gas, especially for particles with larger diameters. It has a significant dust removal effect. The drain pipe 12 is arranged along the radial direction of the ventilation duct 11, and is connected with several drainage membrane guide plate units 61 in sequence, so that the large particle impurities in the drainage membrane guide plate units 61 are discharged to the outside of the dust removal housing 2 through the drain pipe 12 under the flow of the water film, avoiding secondary pollution and ensuring the effective operation of the overall equipment.

[0102] Example 2

[0103] This embodiment also provides a method for removing dust from a water film guide plate of a main ventilation fan for a mine, based on the above-mentioned device for removing dust from a water film guide plate of a main ventilation fan for a mine, comprising the following steps:

[0104] The mixed liquid in the water supply pipeline is output to each row of membrane guide plate units 61, so that a layer of water film is formed on the plate surface of each row of membrane guide plate units 61; when the high-speed moving dust gas enters the ventilation duct 11 through the air inlet 4, the dust hits the plate surface of each row of membrane guide plate units 61 along the air flow direction under the action of inertia force. At this time, the dust particles in the dust gas contact with the water film on the plate surface and adhere to the water film, flow into the sewage pipe 12 along the movement direction of the water film on the plate surface, and are discharged through the sewage pipe 12.

[0105] The gas after dust particle separation is guided to the air outlet 5 through the arc-shaped ventilation channel between each row of membrane guide plate units 61 for discharge.

[0106] The principle of this embodiment is as follows:

[0107] The water delivery pipeline evenly outputs the mixed liquid on the plate surface of each row of membrane guide plate unit 61, forming a continuous and dense water film. This layer of water film is a key part of dust removal, which can effectively capture and adhere to dust particles. When the high-speed dust gas enters the dust removal housing 2 through the air inlet 4, the dust particles will hit the plate surface of each row of membrane guide plate unit 61 due to the action of inertia. After these particles come into contact with the water film, they will be quickly captured and adhered to it due to the surface tension and adhesion of water. The water droplets adhering to the dust particles will flow along the inclined surface of the water film guide plate unit 61 and finally converge into the sewage pipe 12. The design of the sewage pipe 12 ensures that these dust-containing mixed liquids can be smoothly discharged from the dust removal housing 2, thereby realizing the separation and removal of dust. After the dust removal effect of the water film guide plate unit 61, the dust particles in the gas have been removed. The gas after the dust particles are separated is guided to the air outlet 5 through the arc ventilation channel between each row of membrane guide plate units 61 for discharge.

[0108] In summary, the present embodiment provides a method for removing dust from a water film guide plate of a main ventilation fan for a mine, wherein the mixed liquid in the water supply pipeline is output to each row of film guide plate units 61, so that a layer of water film is formed on the plate surface of each row of film guide plate units 61; when the high-speed moving dust gas enters the ventilation duct 11 through the air inlet 4, the dust particles collide with the water film guide plate group 6 along the air flow direction under the action of inertia force and are captured by the water film, and the dust particles flow to the drain pipe 12 under the action of gravity, thereby improving the separation of dust particles and gas, and the gas after dust removal is discharged to the air outlet 5 through the water film guide plate group 6, thereby reducing the outlet resistance loss of the fan 15, and the present invention realizes the effective capture of the dust at the outlet of the fan 15 and the effective collection of the mixture containing dust, water, etc., without substantially increasing the energy consumption of the main fan, and ensures the effective removal of dust while effectively discharging the mixed liquid through the drain pipe 12, thereby reducing the risk of secondary pollution. The dust removal device structure designed by the present invention can be applied to any fan dust removal device.

[0109] Finally, it should be noted that the above content is only for illustrating the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A dust removal device for a water film guide plate of a main ventilation fan for a mine, characterized in that: It comprises a dust collector body (1); the dust collector body (1) comprises a dust removal shell (2), a water delivery pipeline, a water film guide plate group (6) and a sewage discharge pipe (12); The ventilation duct (11) between the air inlet (4) and the air outlet (5) of the dust removal housing (2) is in an arc-shaped structure; The water film guide plate group (6) comprises a plurality of drainage film guide plate units (61) arranged in parallel in sequence along the radial direction of the ventilation duct (11), and the plurality of drainage film guide plate units (61) divide the ventilation duct (11) into a plurality of arc-shaped ventilation channels, and both ends of the plurality of drainage film guide plate units (61) are fixed on the inner side wall of the dust removal housing (2); The water delivery pipeline is arranged on both sides of the outer periphery of the dust removal shell (2), and the output ends of the water delivery pipeline are respectively arranged at both ends of a plurality of drainage membrane guide plate units (61) through both sides of the outer periphery of the dust removal shell (2), so as to output the mixed liquid on the plate surfaces of the plurality of drainage membrane guide plate units (61) to form a water film; The drain pipe (12) is arranged along the radial direction of the ventilation duct (11) and is sequentially connected to the plurality of drainage membrane guide plate units (61), and the output end of the drain pipe (12) extends to the outside of the dust removal housing (2) and is used to sequentially discharge the mixed liquid on the plate surfaces of the plurality of drainage membrane guide plate units (61) to the outside of the dust removal housing (2); The water film guide plate unit (61) comprises two groups of water film guide plates (611); Two groups of water film guide plates (611) are arranged side by side in the ventilation duct (11); one end of one group of water film guide plates (611) is fixed to the inner wall of one side of the dust removal housing (2), and one end of the other group of water film guide plates (611) is fixed to the inner wall of the other side of the dust removal housing (2); The sewage pipe (12) is arranged between the two groups of water film guide plates (611), and sewage holes (122) are arranged on both sides of the sewage pipe (12) at positions corresponding to the bottoms of the two groups of water film guide plates (611), for conveying the mixed liquid on the two groups of water film guide plates (611) to the sewage pipe (12) through the sewage holes (122), wherein the plate surfaces of the two groups of water film guide plates (611) are inclined toward the sewage pipe (12); The output end of the water delivery pipeline is arranged on the top of two groups of water film guide plates (611) through both sides of the outer periphery of the dust removal housing (2); The plate surface of the water film guide plate (611) is a concave surface, and the top and bottom of the water film guide plate (611) are respectively U-shaped groove structures; The output end of the water delivery pipeline is arranged in a U-shaped groove structure at the top of the water film guide plate (611) through both sides of the outer periphery of the dust removal shell (2); the sewage discharge hole (122) of the sewage discharge pipe (12) is correspondingly arranged at the U-shaped groove structure at the bottom of the water film guide plate (611).

2. A water film guide plate dust removal device for a main ventilation fan for mining use according to claim 1, characterized in that: A blocking plate (14) is provided at the connection between the water film guide plate (611) and the inner wall of the dust removal housing (2), for preventing the mixed liquid on the surface of the water film guide plate (611) from overflowing along the gap in the inner wall of the dust removal housing (2).

3. A dust removal device for a water film guide plate of a main ventilation fan for a mine according to claim 1, characterized in that: The water delivery pipeline comprises a water delivery pipe (13); One end of the water delivery pipe (13) is connected to the water delivery device, and the other end is an output end, wherein the output end is branched into two groups of water delivery branch pipes (7); Two groups of water delivery branch pipes (7) are respectively arranged on both sides of the outer periphery of the dust removal shell (2), wherein each group of water delivery branch pipes (7) is connected to a plurality of water outlet pipes (71), and the plurality of water outlet pipes (71) are all arranged in a U-shaped groove structure on the top of a plurality of drainage film guide plates (611) through the dust removal shell (2), and are used to output the mixed liquid on the plate surface of the plurality of water film guide plates (611) to form a water film, wherein the length of the water outlet pipe (71) corresponds to the width of the water film guide plate (611).

4. A water film guide plate dust removal device for a main ventilation fan for mining use according to claim 3, characterized in that: A plurality of first through holes (711) are provided at the top of the water outlet pipe (71) for outputting the mixed liquid to the U-shaped groove structure at the top of the water film guide plate (611); The bottom of the water outlet pipe (71) is provided with a plurality of second through holes (712) for outputting the mixed liquid to the surface of the water film guide plate (611) to form a water film.

5. A water film guide plate dust removal device for a main ventilation fan for mining use according to claim 3, characterized in that: The water delivery device is a water storage tank (3); the water storage tank (3) is located outside the dust removal housing (2); The water tank (3) is provided with an output port and an input port, one end of the water delivery pipe (13) extends into the output port, and the mixed liquid in the water tank (3) is pumped into the water delivery pipe (13) by a water delivery pump; the output end of the sewage discharge pipe (12) extends through the dust removal housing (2) to the input port, and is used to discharge the mixed liquid on the water film guide plate (611) into the water tank (3).

6. A water film guide plate dust removal device for a main ventilation fan for mining use according to claim 1, characterized in that: A plurality of baffles (121) are provided in the sewage discharge pipe (12); A plurality of baffles (121) are correspondingly arranged upstream of each sewage discharge hole (122); each baffle (121) is horizontally arranged in the sewage discharge pipe (12), and each sewage discharge hole (122) is located directly below the corresponding baffle (121).

7. A water film guide plate dust removal device for a main ventilation fan for mining use according to claim 1, characterized in that: A water collecting tank (8) is provided at the bottom of the dust removal housing (2); Drain pipes (10) are respectively provided on both sides of the water collecting tank (8) through the two side walls of the dust removal housing (2); A plurality of reinforcing ribs (9) are arranged in the water collecting trough (8); each reinforcing rib (9) is provided with a third through hole for allowing the mixed liquid between adjacent reinforcing ribs (9) to flow to the drain pipe (10) through the third through hole and be discharged.

8. A method for removing dust from a water film guide plate of a main ventilation fan for a mine, characterized in that: A water film guide plate dust removal device for a main ventilation fan for a mine according to any one of claims 1 to 7 comprises the following steps: The mixed liquid in the water delivery pipeline is output to each row of membrane guide plate units (61), so that a layer of water film is formed on the plate surface of each row of membrane guide plate units (61); when the high-speed moving dust gas enters the ventilation duct (11) through the air inlet (4), the dust impinges on the plate surface of each row of membrane guide plate units (61) along the direction of the air flow under the action of inertial force, and the dust particles in the dust gas contact the water film on the plate surface and adhere to the water film, and flow into the sewage pipe (12) along the movement direction of the water film on the plate surface, and are discharged through the sewage pipe (12); The gas after the dust particles are separated is guided to the air outlet (5) through the arc-shaped ventilation channel between each row of membrane guide plate units (61) and discharged.

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