A dust-proof ventilation equipment for coal mining

Abstract

The present invention discloses a dust-proof ventilation and air exchange device for coal mining, which relates to the technical field of coal mining. The present invention includes a water inlet pipe that is rotatably connected and communicated with a wet fan. The wet fan includes a wheel body and blades. A water flow cavity is provided inside the wheel body. An elastic valve for opening and closing the water flow cavity is provided inside the water flow cavity. A plurality of blades are fixedly connected to the outer wall of the wheel body. When the wheel body and blades are driven to rotate by a motor, the slider squeezes the spring under the action of the centrifugal force of the wheel body. The centrifugal force is different in size, and the sliding stroke of the slider squeezes the spring to different degrees. The design of synchronous change of wind speed and centrifugal force enables the equipment to automatically adjust the dust reduction intensity according to different dust concentrations and ventilation requirements without manual intervention.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, in particular to dust-proof ventilation equipment used for coal mining. Background Art

[0002] Dust-control ventilation equipment used in coal mining commonly includes high-efficiency ventilation and dust reduction devices for mining working faces, unpowered underground coal mine fog cannons, and electromechanical ventilation and dust removal equipment for coal mines. For example, the high-efficiency ventilation and dust reduction device for mining working faces addresses the low dust removal efficiency and poor dust settling effects of traditional equipment in roadways. It achieves dust reduction through a combination of fan ventilation and nozzle spraying.

[0003] However, in the process of spraying through the nozzle, there are the following problems:

[0004] Existing ventilation dust reduction devices usually use a nozzle to spray water in the direction of the fan and along the direction of the air flow. Then, during the dust flow, the dust and water mix to reduce the dust. However, the nozzle is usually set in the center of the ventilation duct. The nozzle water spray diameter and spray range are smaller than the ventilation duct of the dust reduction device. The ventilation duct diameter is larger. This results in a faster air flow mixing and dust reduction rate inside the ventilation duct, and a poor dust reduction effect on the outside, thereby affecting the overall dust reduction efficiency.

[0005] After the dust is reduced by spraying, it is filtered through a filter to achieve the purpose of ventilation. However, after the filter has been used for a long time, it filters a lot of dust, which may cause blockage and needs to be disassembled and cleaned. During the disassembly and cleaning process, the equipment will be worn. In response to the above problems, the inventors proposed a dust-proof ventilation equipment for coal mining to solve the above problems. Summary of the Invention

[0006] In order to solve the problem of large discrepancy between the spraying range of the nozzle and the diameter of the ventilation duct, the purpose of the present invention is to provide a dust-proof ventilation equipment for coal mining.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: a dust-proof ventilation and air exchange device for coal mining, comprising two filters, a middle tube body and a water inlet pipe, wherein a motor is installed inside the middle tube body, a wet fan is installed on the output shaft of the motor, the water inlet pipe passes through the middle tube body and extends into the interior of the middle tube body, the water inlet pipe is rotatably connected to and communicates with the wet fan, the wet fan comprises a wheel body and blades, a water flow cavity is provided inside the wheel body, an elastic valve for opening and closing the water flow cavity is provided inside the water flow cavity, and a plurality of the blades are fixedly connected to the outer wall of the wheel body;

[0008] A plurality of blades are sequentially and obliquely mounted on the outer wall of the wheel body, a plurality of water outlet holes are opened on the outer wall of the blades, and the blades are connected to the water flow cavity;

[0009] When the motor drives the wheel to rotate, the elastic valve gradually opens the opening of the water flow channel under the action of the centrifugal force of the rotation;

[0010] The motor drives the wheel and blades at different speeds, generating different wind speeds and centrifugal forces, which change synchronously.

[0011] The bottom of the middle pipe body and the waste discharge pipe is connected to a waste discharge pipe for discharging waste.

[0012] Preferably, one end of the middle tube body is connected to a connecting shell, an end of the connecting shell away from the middle tube body is connected to an exhaust pipe, the bottoms of the middle tube body and the exhaust pipe are connected to a waste discharge pipe for waste discharge, and the two filters are respectively installed at the ports of the middle tube body and the exhaust pipe;

[0013] The water flow channel is composed of a chamber and a channel, wherein the chamber is arranged in the center of the wheel body and communicates between the water inlet pipe and the channel;

[0014] There are a plurality of channels, which are connected between the chamber and the blades;

[0015] An annular tube is connected between the plurality of blades, and a plurality of fine holes are opened on the outer wall of the annular tube.

[0016] Preferably, the elastic valve is composed of a slider and a spring, a sliding cavity is provided inside the wheel body, the spring is connected to the inner wall of the sliding cavity, the slider is connected to the spring, the spring is slidably connected to the inner wall of the sliding cavity, and the slider is located between the cavity and the channel.

[0017] Preferably, a protective shell is fixedly connected to the inner wall of the middle tube body, the motor is installed inside the protective shell, and a wiring channel for powering the motor is connected to the outer wall of the protective shell. The wiring channel passes through the middle tube body and extends to the outside. A number of guide blades are fixedly connected to the outer wall of one end of the protective shell, and the guide blades are arranged in an inclined manner in sequence on the outer wall of the protective shell.

[0018] Preferably, a guide impeller is rotatably connected to the outer wall of the end cover of the protective shell.

[0019] Preferably, a switching assembly is installed between the connecting shell and the exhaust pipe, and a conical filter is connected to the switching assembly. The conical filter is located between the connecting shell and the exhaust pipe for secondary filtration.

[0020] An annular channel is connected on the outer wall of the connecting shell, and the annular channel is connected between the connecting shell and the exhaust pipe. A cleaning component for cleaning the conical filter is installed inside the exhaust pipe;

[0021] Move the switching component to connect the annular channel and the connecting shell, close the port of the connecting shell and the exhaust pipe, and at the same time drive the conical filter screen close to the cleaning component, and the airflow drives the cleaning component to clean the conical filter screen.

[0022] Preferably, the switching assembly includes a connecting frame, one end of the connecting frame is mounted with a conical shell, and the other end of the connecting frame is mounted with a cone;

[0023] The conical shell is used to open and close the port of the exhaust pipe, the cone is used to open and close the port of the connecting shell, the conical filter is connected to the conical shell, and a first limiting hole is opened on the outer wall of the connecting frame.

[0024] Preferably, two second limiting holes are provided on the outer wall of the connecting shell, and a limiting pin is inserted between the second limiting hole and the first limiting hole.

[0025] Preferably, the cleaning assembly includes a cleaning brush and a ring body, wherein the ring body is rotatably connected to the inner wall of the exhaust pipe, and a plurality of arc-shaped blades are fixedly connected to the outer wall of the ring body;

[0026] When the connecting pipe of the annular channel is connected to the exhaust pipe, they are tangent to each other, and the airflow blows the arc-shaped inner side of the arc-shaped blade.

[0027] Preferably, a plurality of the cleaning brushes are fixedly connected to the inner wall of the ring body and close to the outer wall of the conical filter screen.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. When the motor drives the wheel body and blades to rotate, the slider slides from the inner side of the sliding cavity to the outer side close to the wheel body under the action of the centrifugal force of the wheel body, and the slider squeezes the spring. The degree of squeezing of the spring by the sliding stroke of the slider is different depending on the size of the centrifugal force. When the speed increases, the wind speed increases, the centrifugal force is synchronously enhanced, the slider opening becomes larger, and the water output increases. Conversely, when the speed decreases, the wind speed decreases, and the water output decreases accordingly. The design of synchronous changes in wind speed and centrifugal force enables the equipment to automatically adjust the dust reduction intensity according to different dust concentrations and ventilation requirements without manual intervention, thereby improving the adaptability and work efficiency of the equipment under different working conditions.

[0030] 2. When the conical filter of the present invention needs to be cleaned, the switching assembly is moved to direct the airflow to the annular channel, driving the curved blades of the cleaning assembly to rotate, and driving the cleaning brush to rotate and clean the outer wall of the conical filter. The structural design of the conical filter facilitates dust accumulation and shedding. There is no need to disassemble the equipment during the cleaning process, avoiding wear of parts caused by frequent disassembly and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0034] Figure 3 This is a structural schematic diagram of the wet fan of the present invention.

[0035] Figure 4 This is a schematic diagram of the internal structure of the wet fan of the present invention.

[0036] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0037] Figure 6 This is a schematic diagram of the motor and protective shell structure of the present invention.

[0038] Figure 7 This is a schematic diagram of the switching assembly and conical filter structure of the present invention.

[0039] Figure 8 It is a cross-sectional view of the internal structure of the present invention.

[0040] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point B.

[0041] Figure 10 Schematic diagram of the cleaning component of the present invention.

[0042] Figure 11 It is a schematic structural diagram of the cleaning brush of the present invention.

[0043] Figure 12 This is a schematic diagram of the connecting shell and cone structure of the present invention.

[0044] In the figure: 1. filter screen; 2. middle tube body; 3. annular channel; 4. switching assembly; 401. connecting frame; 4010. first limiting hole; 402. conical shell; 403. cone; 5. waste discharge pipe; 6. water inlet pipe; 7. wet fan; 701. wheel body; 7010. chamber; 7011. channel; 702. annular tube; 703. blade; 8. protective shell; 9. guide blade; 10. guide impeller; 11. slider; 12. spring; 13. motor; 14. connecting shell; 1401. second limiting hole; 15. exhaust pipe; 16. cleaning assembly; 1601. cleaning brush; 1602. ring body; 1603. curved blade; 17. limiting latch; 18. conical filter screen. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example 1

[0047] like Figures 1-12 As shown, the present invention provides a dust-proof ventilation device for coal mining, including two filters 1, a middle tube body 2 and a water inlet pipe 6. A motor 13 is installed inside the middle tube body 2, and a wet fan 7 is installed on the output shaft of the motor 13. The water inlet pipe 6 passes through the middle tube body 2 and extends into the interior of the middle tube body 2. The water inlet pipe 6 is rotatably connected to and communicates with the wet fan 7. The wet fan 7 includes a wheel body 701 and blades 703. A water flow cavity is provided inside the wheel body 701. An elastic valve for opening and closing the water flow cavity is provided inside the water flow cavity. A plurality of blades 703 are fixedly connected to the outer wall of the wheel body 701.

[0048] Several blades 703 are sequentially and obliquely mounted on the outer wall of the wheel body 701. Several water outlet holes are opened on the outer wall of the blades 703, and the blades 703 are connected to the water flow channel.

[0049] When the motor 13 drives the wheel 701 to rotate, the elastic valve gradually opens the water flow channel under the action of the centrifugal force of the rotation;

[0050] The motor 13 drives the wheel body 701 and the blades 703 at different rotational speeds, resulting in different wind speeds and centrifugal forces, which change synchronously.

[0051] The purpose of this arrangement is that the motor 13 drives the wheel body 701 and the blades 703 to rotate, and the rotation of the blades 703 drives the air flow to introduce the dust at the air inlet end of the middle tube body 2. The filter screen 1 is used to filter large particles and large impurities. At the same time, the water flow is introduced into the water inlet pipe 6. The elastic valve opens the water flow cavity under the action of the centrifugal force of the rotation of the wheel body 701, and the water flows into the blades 703 and is discharged through the water outlet. The water flow mixes with the dust passing through the outer wall of the blade 703, making the dust wet, thereby playing a role in dust reduction. The motor 13 drives the wheel body 701 and the blades 703 at different speeds, and the wind speed and centrifugal force generated are different. The wind speed and centrifugal force change synchronously, so that the water output and air intake can be dynamically changed synchronously, and its adaptability is improved to meet the dust reduction needs of different needs. The generated waste is discharged through the waste discharge pipe 5.

[0052] One end of the middle tube body 2 is connected to a connecting shell 14, and the end of the connecting shell 14 away from the middle tube body 2 is connected to an exhaust pipe 15. The bottoms of the middle tube body 2 and the exhaust pipe 15 are connected to a waste discharge pipe 5 for waste discharge. Two filters 1 are respectively installed at the ends of the middle tube body 2 and the exhaust pipe 15;

[0053] The water flow channel is composed of a chamber 7010 and a channel 7011. The chamber 7010 is arranged in the center of the wheel body 701. The chamber 7010 is connected between the water inlet pipe 6 and the channel 7011.

[0054] There are a plurality of channels 7011 , which are connected between the chamber 7010 and the blade 703 ;

[0055] An annular tube 702 is connected between the blades 703, and a plurality of fine holes are opened on the outer wall of the annular tube 702;

[0056] The purpose of this arrangement is that the water flows through the chamber 7010 and the channel 7011, reaches the blades 703 and the annular tube 702, and then is discharged. Figure 3 As shown, the annular tube 702 is close to the outer wall of the wheel body 701, and the water flow discharged through the annular tube 702 is between the outer walls of the two wheel bodies 701. Under the action of centrifugation, it is sprayed linearly to form a surface, which can just cover the dust airflow passing through the outer walls of the two wheel bodies 701. The two can be repeatedly mixed, thereby achieving a better dust reduction effect, and the formed sewage is discharged to the waste discharge pipe 5.

[0057] The elastic valve is composed of a slider 11 and a spring 12. A sliding cavity is provided inside the wheel body 701. The spring 12 is connected to the inner wall of the sliding cavity. The slider 11 is connected to the spring 12. The spring 12 is slidably connected to the inner wall of the sliding cavity. The slider 11 is located between the cavity 7010 and the channel 7011.

[0058] The purpose of this arrangement is that under the action of the centrifugal force of the rotation of the wheel body 701, the slider 11 squeezes the spring 12. The centrifugal force is different in size, and the sliding stroke of the slider 11 squeezes the spring 12 to different degrees, thereby different opening diameters between the chamber 7010 and the channel 7011.

[0059] A protective shell 8 is fixedly connected to the inner wall of the middle tube body 2, and the motor 13 is installed inside the protective shell 8. The outer wall of the protective shell 8 is connected to a wiring channel for powering the motor 13. The wiring channel passes through the middle tube body 2 and extends to the outside. A plurality of guide blades 9 are fixedly connected to the outer wall of one end of the protective shell 8. The plurality of guide blades 9 are arranged in an inclined manner on the outer wall of the protective shell 8 in sequence;

[0060] The purpose of such a configuration is that the protective shell 8 plays a role in protecting the motor 13, and the guide blades 9 are used to further guide the airflow after dust precipitation.

[0061] A guide vane 10 is rotatably connected to the outer wall of the end cover of the protective shell 8. The purpose of this arrangement is that the passing airflow drives the guide vane 10 to rotate. During the rotation of the guide vane 10, it further guides the airflow and accelerates the flow of the airflow.

[0062] Embodiment 2, based on embodiment 1, provides a switching component 4;

[0063] like Figure 7 、 Figure 8 and Figure 12 A switching assembly 4 is installed between the connecting shell 14 and the exhaust pipe 15. A conical filter 18 is connected to the switching assembly 4. The conical filter 18 is located between the connecting shell 14 and the exhaust pipe 15 for secondary filtration.

[0064] An annular channel 3 is connected on the outer wall of the connecting shell 14, and the annular channel 3 is connected between the connecting shell 14 and the exhaust pipe 15. A cleaning component 16 for cleaning the conical filter 18 is installed inside the exhaust pipe 15;

[0065] The switching assembly 4 is moved to connect the annular channel 3 and the connecting shell 14, and the ports of the connecting shell 14 and the exhaust pipe 15 are closed. At the same time, the conical filter 18 is driven close to the cleaning assembly 16. The airflow drives the cleaning assembly 16 to clean the conical filter 18. The purpose of this arrangement is to direct the airflow to different channels through the movement and adjustment of the switching assembly 4. When filtering is required, the dust airflow passes through the conical filter 18 for secondary filtration. Since the conical filter 18 is located between the exhaust pipe 15 and the switching assembly 4, it is relatively troublesome to clean and maintain the interior.

[0066] When the conical filter 18 needs to be cleaned, the switching component 4 is moved to connect the annular channel 3 and the connecting shell 14, and the ports of the connecting shell 14 and the exhaust pipe 15 are closed. At the same time, the conical filter 18 is driven close to the cleaning component 16, and the airflow drives the cleaning component 16 to clean the conical filter 18, and the generated waste is discharged through the waste discharge pipe 5.

[0067] The switching assembly 4 includes a connecting frame 401, a conical shell 402 is installed at one end of the connecting frame 401, and a cone 403 is installed at the other end of the connecting frame 401;

[0068] The conical shell 402 is used to open and close the port of the exhaust pipe 15, and the cone 403 is used to open and close the port of the connecting shell 14. The conical filter 18 is connected to the conical shell 402. A first limiting hole 4010 is opened on the outer wall of the connecting frame 401;

[0069] The purpose of this arrangement is that in the initial state, the cone 403 opens the port of the connecting shell 14, and the cone shell 402 opens the port of the exhaust pipe 15. When the cone filter 18 needs to be cleaned, the connecting frame 401 is moved to drive the cone 403 to close the port of the connecting shell 14, and the cone shell 402 to seal the port of the exhaust pipe 15.

[0070] The conical shell 402 is provided to facilitate the diversion of airflow after the airflow passes through the conical filter 18.

[0071] The annular body at one end of the connecting frame 401, such as Figure 7 and Figure 8 The annular body of the connecting frame 401 opens the square hole on the connecting shell 14, so that the air flow can flow into the interior of the annular channel 3, pass through the connecting pipe of the annular channel 3, flow into the interior of the exhaust pipe 15, and drive the cleaning component 16. When the cleaning component 16 is in operation, it cleans the conical filter screen 18.

[0072] Two second limiting holes 1401 are provided on the outer wall of the connecting shell 14 , and a limiting pin 17 is inserted between the second limiting hole 1401 and the first limiting hole 4010 ;

[0073] The purpose of such arrangement is that after the connecting frame 401 is slid and adjusted, the limiting latch 17 limits and fixes it.

[0074] Example 3, based on Example 2, provides a cleaning brush 1601 and a ring body 1602 structure;

[0075] like Figures 8-11The cleaning assembly 16 includes a cleaning brush 1601 and a ring body 1602. The ring body 1602 is rotatably connected to the inner wall of the exhaust pipe 15. A plurality of arc-shaped blades 1603 are fixedly connected to the outer wall of the ring body 1602.

[0076] When the connecting pipe of the annular channel 3 is connected to the exhaust pipe 15, they are tangent to each other, and the airflow blows the arc-shaped inner side of the arc-shaped blade 1603. The airflow enters the interior of the exhaust pipe 15 tangentially and pushes the arc-shaped blade 1603. When the airflow pushes it, the arc-shaped blade 1603 is subjected to more concentrated force.

[0077] A plurality of cleaning brushes 1601 are fixedly connected to the inner wall of the ring body 1602 and close to the outer wall of the conical filter 18;

[0078] The purpose of this arrangement is that the arc-shaped blades 1603 drive the ring body 1602 and the cleaning brush 1601 to rotate, so that the cleaning brush 1601 can clean the outer wall of the conical filter screen 18.

[0079] Working principle: the motor 13 drives the wheel body 701 and the blades 703 to rotate. The rotation of the blades 703 drives the air flow, introducing the dust from the air inlet end of the middle tube body 2. The filter screen 1 is used to filter large particles and large impurities. At the same time, the water flow is introduced into the water inlet pipe 6. Under the action of the centrifugal force of the rotation of the wheel body 701, the slider 11 slides from the inner side of the sliding cavity to the outer side close to the wheel body 701. The slider 11 squeezes the spring 12. The centrifugal force is different, and the sliding stroke of the slider 11 squeezes the spring 12 to different degrees, thereby changing the opening diameter between the chamber 7010 and the channel 7011. The ventilation volume and the water output are synchronously and dynamically changed, thereby achieving dust reduction work with different requirements. When the wheel body 701 is not rotating, the tension of the spring 12 is slightly less than the water pressure.

[0080] The guide blades 9 are used to further guide the airflow after dust settling. The airflow drives the guide vane 10 to rotate. During the rotation of the guide vane 10, the airflow is further guided to accelerate the flow of the airflow.

[0081] By moving and adjusting the switching assembly 4, the airflow is directed to the annular channel 3 or the exhaust pipe 15. When filtering is required, the dust airflow passes through the conical filter 18 for secondary filtration. Since the conical filter 18 is located between the exhaust pipe 15 and the switching assembly 4, it is relatively troublesome to clean and maintain the interior.

[0082] In the initial state, the cone 403 opens the port of the connecting shell 14, and the cone shell 402 opens the port of the exhaust pipe 15. When the cone filter 18 needs to be cleaned, the connecting frame 401 is moved. After the connecting frame 401 slides and adjusts, the limit pin 17 limits and fixes it, driving the cone 403 to close the port of the connecting shell 14, and the cone shell 402 to seal the port of the exhaust pipe 15.

[0083] The conical shell 402 is provided to facilitate the diversion of airflow after the airflow passes through the conical filter 18.

[0084] The annular body at one end of the connecting frame 401, such as Figure 7 and Figure 8 The annular body of the connecting frame 401 opens the square hole on the connecting shell 14, so that the airflow can flow into the interior of the annular channel 3, pass through the connecting pipe of the annular channel 3, and flow into the interior of the exhaust pipe 15;

[0085] The airflow enters the exhaust pipe 15 tangentially, pushing the arc blade 1603. When the airflow pushes the arc blade 1603, the force is more concentrated. The arc blade 1603 drives the ring body 1602 and the cleaning brush 1601 to rotate, so that the cleaning brush 1601 cleans the outer wall of the conical filter 18.

[0086] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0087] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A dust-proof ventilation device for coal mining, comprising two filter screens (1), a middle tube body (2) and a water inlet pipe (6), wherein a motor (13) is installed inside the middle tube body (2), a wet fan (7) is installed on the output shaft of the motor (13), and the water inlet pipe (6) passes through the middle tube body (2) and extends to the inside of the middle tube body (2), characterized in that: The water inlet pipe (6) is rotatably connected to and communicates with the wet fan (7). The wet fan (7) comprises a wheel (701) and blades (703). A water flow cavity is provided inside the wheel (701). An elastic valve for opening and closing the water flow cavity is provided inside the water flow cavity. A plurality of blades (703) are fixedly connected to the outer wall of the wheel (701). A plurality of blades (703) are sequentially and obliquely mounted on the outer wall of the wheel body (701); a plurality of water outlet holes are opened on the outer wall of the blades (703); and the blades (703) are in communication with the water flow cavity; When the motor (13) drives the wheel (701) to rotate, the elastic valve gradually opens the opening of the water flow channel under the action of the centrifugal force of the rotation; The motor (13) drives the wheel body (701) and the blades (703) at different rotational speeds, resulting in different wind speeds and centrifugal forces, which change synchronously.

2. The dust-proof ventilation equipment for coal mining according to claim 1, characterized in that: One end of the middle tube body (2) is connected to a connecting shell (14), and one end of the connecting shell (14) away from the middle tube body (2) is connected to an exhaust pipe (15). The bottoms of the middle tube body (2) and the exhaust pipe (15) are connected to a waste discharge pipe (5) for discharging waste. The two filter screens (1) are respectively installed at the ports of the middle tube body (2) and the exhaust pipe (15). The water flow channel is composed of a chamber (7010) and a channel (7011); the chamber (7010) is arranged in the center of the wheel body (701); and the chamber (7010) is connected between the water inlet pipe (6) and the channel (7011); A plurality of channels (7011) are provided, and the channels (7011) are connected between the chamber (7010) and the blade (703); An annular tube (702) is connected between the plurality of blades (703), and a plurality of fine holes are provided on the outer wall of the annular tube (702).

3. The dust-proof ventilation equipment for coal mining according to claim 2, characterized in that: The elastic valve is composed of a slider (11) and a spring (12). A sliding cavity is provided inside the wheel body (701). The spring (12) is connected to the inner wall of the sliding cavity. The slider (11) is connected to the spring (12). The spring (12) is slidably connected to the inner wall of the sliding cavity. The slider (11) is located between the cavity (7010) and the channel (7011).

4. The dust-proof ventilation equipment for coal mining according to claim 3, characterized in that: A protective shell (8) is fixedly connected to the inner wall of the middle tube body (2), the motor (13) is installed inside the protective shell (8), and a wiring channel for energizing the motor (13) is connected to the outer wall of the protective shell (8), the wiring channel passes through the middle tube body (2) and extends to the outside, and a plurality of guide blades (9) are fixedly connected to the outer wall of one end of the protective shell (8), and the plurality of guide blades (9) are arranged in an inclined manner on the outer wall of the protective shell (8) in sequence.

5. The dust-proof ventilation equipment for coal mining according to claim 4, characterized in that: A guide impeller (10) is rotatably connected to the outer wall of the end cover of the protective shell (8).

6. The dust-proof ventilation equipment for coal mining according to claim 5, characterized in that: A switching assembly (4) is installed between the connecting shell (14) and the exhaust pipe (15), and a conical filter (18) is connected to the switching assembly (4). The conical filter (18) is located between the connecting shell (14) and the exhaust pipe (15) and is used for secondary filtration. An annular channel (3) is connected on the outer wall of the connecting shell (14), and the annular channel (3) is connected between the connecting shell (14) and the exhaust pipe (15). A cleaning component (16) for cleaning the conical filter (18) is installed inside the exhaust pipe (15); The switching assembly (4) is moved to connect the annular channel (3) and the connecting shell (14), and the ports of the connecting shell (14) and the exhaust pipe (15) are closed, while the conical filter (18) is driven close to the cleaning assembly (16), and the airflow drives the cleaning assembly (16) to clean the conical filter (18).

7. The dust-proof ventilation equipment for coal mining according to claim 6, characterized in that: The switching assembly (4) comprises a connecting frame (401), one end of the connecting frame (401) is mounted with a conical shell (402), and the other end of the connecting frame (401) is mounted with a cone (403); The conical shell (402) is used to open and close the port of the exhaust pipe (15), the cone (403) is used to open and close the port of the connecting shell (14), the conical filter (18) is connected to the conical shell (402), and a first limiting hole (4010) is opened on the outer wall of the connecting frame (401).

8. The dust-proof ventilation equipment for coal mining according to claim 7, characterized in that: Two second limiting holes (1401) are provided on the outer wall of the connecting shell (14), and a limiting pin (17) is inserted between the second limiting hole (1401) and the first limiting hole (4010).

9. The dust-proof ventilation equipment for coal mining according to claim 6, characterized in that: The cleaning assembly (16) comprises a cleaning brush (1601) and a ring body (1602), wherein the ring body (1602) is rotatably connected to the inner wall of the exhaust pipe (15), and a plurality of arc-shaped blades (1603) are fixedly connected to the outer wall of the ring body (1602); When the connecting pipe of the annular channel (3) is connected to the exhaust pipe (15), they are tangential to each other, and the airflow blows the arc-shaped inner side of the arc-shaped blade (1603).

10. The dust-proof ventilation equipment for coal mining according to claim 9, characterized in that: Several cleaning brushes (1601) are fixedly connected to the inner wall of the ring body (1602) and close to the outer wall of the conical filter screen (18).

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