A negative pressure suction dust removal device based on Venturi effect

Abstract

The present invention proposes a negative pressure suction dust removal device based on the Venturi effect, which belongs to the field of coal mine dust removal. It solves the problems that the dust removal devices currently applicable to the field of coal mine dust removal still have too large equipment volume and mass, difficulty in moving, high noise and high daily maintenance costs. It includes a box body, a water-powered fan, a venturi tube, a mud removal component, a counter-cyclone fan, a filter cabin and a water tank, and the box body is provided with an air inlet duct, a sedimentation chamber, an air duct and an air outlet duct in sequence; the water-powered fan is arranged at the inlet end of the air inlet duct; the input end of the venturi tube is connected to the air inlet duct, and the output end is connected to the sedimentation chamber; the mud removal component is arranged below the air duct; the counter-cyclone fan is arranged in the air duct, and the counter-cyclone fan is located between the sedimentation chamber and the filter cabin, and the filter cabin is connected to the air outlet duct; the water tank is connected to the filter cabin, and is also connected to the water inlet of the water-powered fan. The dust removal device has a simple structure, small volume and mass, is easy to move, has low noise and low daily maintenance costs.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust removal, and in particular relates to a negative pressure suction dust removal device based on the Venturi effect. Background Art

[0002] Coal is my country's basic energy and industrial raw material. It has long provided a strong guarantee for economic and social development and the safe and stable supply of national energy. In recent years, with the development of science and technology, the coal mining industry has developed rapidly in my country. However, a large amount of dust is often generated during the construction process of coal mines underground. It is necessary to use underground dust collectors to remove dust in coal mines to reduce the physical harm of high-concentration dust in mines to workers. Among them, the long-pressure short-extraction dust removal system realizes the linkage and linkage of related equipment through positive pressure air supply, automatic air control, precise wind measurement, and negative pressure exhaust, and realizes precise control of air volume throughout the process, thereby effectively reducing the dust concentration on the working face. The system equipment mainly includes dry dust removal devices, air dividers, etc. However, the dust removal devices currently applicable to the field of coal mine dust removal still have problems such as large equipment size and mass, difficulty in moving, high noise, and high daily maintenance costs, which greatly limits its application effect and promotion value. Summary of the invention

[0003] In view of this, in order to solve the problems that the dust removal devices currently used in the field of coal mine dust removal still have, such as large equipment size and mass, difficulty in moving, loud noise and high daily maintenance costs, which greatly limit their application effect and promotion value, the present invention proposes a negative pressure suction dust removal device based on the Venturi effect.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A negative pressure suction dust removal device based on Venturi effect, comprising:

[0006] A box body, wherein an air inlet duct, a settling chamber, an air duct and an air outlet duct are sequentially arranged in the box body;

[0007] A water-powered fan is arranged at the inlet end of the air inlet duct;

[0008] A venturi tube, wherein the input end of the venturi tube is connected to the air inlet duct, and the output end of the venturi tube is connected to the settling chamber;

[0009] A mud removal component, the mud removal component is arranged below the air duct;

[0010] A counter-cyclonic fan and a filter cabin, wherein the counter-cyclonic fan is arranged in the air duct, the counter-cyclonic fan is located between the settling chamber and the filter cabin, and the filter cabin is connected to the air outlet duct;

[0011] A water tank is communicated with the filter cabin, and the water tank is also communicated with the water inlet of the water power fan.

[0012] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, a plurality of air atomizing nozzles and a lubricant adding system are also provided on the top plate of the air inlet duct, the plurality of air atomizing nozzles are arranged at intervals, and the water tank is connected to the water inlet of the air atomizing nozzle.

[0013] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on Venturi effect, the Venturi tube includes an air suction pipe, an air outlet pipe, an inner ring, a diameter adjustment module and a track. The air suction pipe and the air outlet pipe are connected, a part of the inner ring is located in the air suction pipe, and the other part is located in the air outlet pipe. The diameter adjustment module is located in the inner ring, and the track is provided between the air suction pipe and the air outlet pipe, and the diameter adjustment module is slidably arranged on the track.

[0014] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, the mud removal component includes an air motor, a screw and a mud removal baffle. The air motor is fixedly arranged on the box body, and the air motor is transmission-connected to the screw. The screw is rotatably arranged on the box body, and the mud removal baffle is threadedly connected to the screw. A sewage chamber is also provided in the box body, and the screw and the mud removal baffle are located in the sewage chamber. A sewage cover plate is also provided in the box body, and the sewage cover plate is provided with a plurality of through holes, and the through holes connect the sedimentation chamber and the sewage chamber.

[0015] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, the mud removal component also includes a position sensor, and the position sensor can detect the position of the mud removal baffle.

[0016] As a preferred solution of the negative pressure suction dust removal device based on the Venturi effect, a polymer filter is provided in the filter cabin, one end of the polymer filter is connected to the sewage cavity, and the other end is connected to the water tank.

[0017] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, it also includes a drain plug and a mud discharge plug. The lower end of the box body is provided with a mud discharge port and a drain port. The mud discharge port is connected with the sewage chamber, and the drain port is connected with the water tank. The drain plug can block or open the drain port, and the mud discharge plug can block or open the mud discharge port.

[0018] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, the filter cabin is also provided with a ball ring filter, a high-efficiency demisting net and a baffle filter which are connected in sequence, the ball ring filter is connected to the air duct, the baffle filter is connected to the air outlet duct, and the ball ring filter, the high-efficiency demisting net and the baffle filter are all connected to the water tank.

[0019] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on Venturi effect, the counter-rotating fan includes a supporting mechanism, forward-rotating blades, reverse-rotating blades and a motor, the supporting mechanism is fixedly arranged in the air duct, the forward-rotating blades and reverse-rotating blades are respectively arranged on both sides of the motor, and are both transmission-connected to the motor.

[0020] As a preferred solution of the above-mentioned negative pressure suction dust removal device based on the Venturi effect, the water-powered fan includes a water-powered motor, a water shaft and fan blades, the water-powered motor is transmission-connected to the water shaft, and the fan blades are connected to the water shaft.

[0021] Compared with the prior art, the negative pressure suction dust removal device based on the Venturi effect provided by the present invention has the following beneficial effects:

[0022] 1. The present invention provides a negative pressure suction dust removal device based on the Venturi effect. In the negative pressure suction dust removal device based on the Venturi effect, a water-powered fan is used, which has low noise and can humidify the dust-containing airflow; when the water-powered fan rotates, the air atomizing nozzle is started to atomize the mixed liquid of water and dust suppressant, and humidify the dust-containing airflow at the same time; the water-containing and dust-containing airflow is sucked through the secondary speed-increasing and pressure-reducing effect of the Venturi tube, and passes through the suction pipe, the inner sleeve ring, and the air outlet pipe in sequence, and according to actual needs, a diameter adjustment module is added to the inner sleeve ring, and the diameter adjustment module can also be moved through a guide rail, and the air inlet pipe is connected with the sedimentation chamber through the Venturi tube, and the sedimentation chamber is connected with the sewage tank through the through hole of the sewage cover plate, so that larger dust-containing airflow particles will directly settle in the sewage chamber, and there is a sewage cover plate on the top of the sewage chamber to prevent sewage overflow. The dust-laden airflow after preliminary separation passes through the air duct under the action of the counter-cyclone fan, and will continue to be filtered through the ball ring filter, high-efficiency demisting net and baffle filter in the filter cabin, and finally form clean gas to be discharged into the air outlet duct. The filtered water enters the water tank through the water tank cover under the action of gravity; the sewage in the sewage chamber is separated into water and mud under the action of gravity. The sludge is driven by the air motor in the mud removal component to rotate the lead screw, driving the mud discharge baffle to move. The position sensor is used to identify the position of the mud removal baffle. When the mud removal baffle reaches the mud discharge port, a signal is sent to reverse the air motor, so that the mud removal baffle performs horizontal reciprocating motion and pushes the sludge into the mud discharge port. The separated water passes through the polymer filter and enters the water tank. The water in the water tank is filtered water and will be recycled and can be supplied to the water power fan and air atomizing nozzle. The water in the water tank can also be discharged through the drain port. The negative pressure suction dust removal device based on the Venturi effect has a simple structure, small size and mass, is easy to move, has low noise and low daily maintenance cost, has good application effect and high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a Venturi tube of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of a Venturi tube of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a counter-cyclone fan of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a water-powered fan of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of a mud removal component of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention along a first viewing angle;

[0030] Figure 7 It is a structural schematic diagram of a mud removal component of a negative pressure suction dust removal device based on the Venturi effect provided by a specific embodiment of the present invention along a second viewing angle.

[0031] In the figure:

[0032] 1. Water-powered fan; 11. Fan blades; 12. Water shaft; 13. Water-powered motor;

[0033] 2. Venturi tube; 21. Air suction pipe; 22. Air outlet pipe; 23. Inner ring; 24. Diameter adjustment module; 25. Track; 26. Fixed plate;

[0034] 3. Counter-rotating fan; 31. Support mechanism; 32. Forward-rotating blades; 33. Counter-rotating blades; 34. Motor;

[0035] 4. Mud removal assembly; 41. Pneumatic motor; 42. Mud removal baffle; 43. Lead screw; 44. Fixing block; 45. Lead screw positioning module; 46. Coupling; 47. Flange; 48. Air inlet;

[0036] 51. Air inlet duct; 52. Settling chamber; 53. Air duct; 54. Air outlet duct; 55. Sewage chamber;

[0037] 6. Air atomizing nozzle;

[0038] 71. Polymer filter; 72. Ball ring filter; 73. High-efficiency demisting net; 74. Baffle filter;

[0039] 8. Water tank;

[0040] 9. Mud drain plug;

[0041] 10. Drain plug. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] See also Figure 1-7 To describe this embodiment, the present invention provides a negative pressure suction dust removal device based on the Venturi effect, which includes a housing, a hydrodynamic fan 1, a Venturi tube 2, a mud removal assembly 4, a counter-cyclone fan 3, a water tank 8 and a filter cabin, wherein an air inlet duct 51, a sedimentation chamber 52, an air duct 53 and an air outlet duct 52 are sequentially arranged in the housing; the hydrodynamic fan 1 is arranged at the inlet end of the air inlet duct 51; the input end of the Venturi tube 2 is connected to the air inlet duct 51, and the output end is connected to the sedimentation chamber 52; the mud removal assembly 4 is arranged below the air duct 53; the counter-cyclone fan 3 is arranged in the air duct 53, the counter-cyclone fan 3 is located between the sedimentation chamber 52 and the filter cabin, the filter cabin is connected to the air outlet duct 52, the water tank 8 is connected to the filter cabin, and the water tank 8 is also connected to the water inlet of the hydrodynamic fan 1.

[0047] The negative pressure suction dust removal device based on the Venturi effect, the hydrodynamic fan 1 rotates at a high speed, the hydrodynamic fan 1 is driven by water, and has an obvious noise reduction effect, and its noise is far less than 85 decibels. Under the high momentum vortex fine water mist and negative pressure formed by the hydrodynamic fan 1, the dust-containing airflow will enter the air inlet duct 51, and then enter the sedimentation chamber 52 through the Venturi tube 2. Based on the Venturi effect, the Venturi tube 2 sucks the water-containing and dust-containing airflow through the secondary speed increase and pressure reduction effect. Under the combined action of inertia and gravity, larger dust-containing airflow particles will directly settle into the sedimentation chamber 52 to form sewage, and after sedimentation, form sludge, and regularly use the mud removal component 4 for dredging. At the same time, under the action of the cyclone 3, the dust-containing airflow in the sedimentation chamber 52 is negatively suctioned and accelerated, so that the dust-containing airflow quickly passes through the filter cabin, and finally forms clean gas through the filter cabin and is discharged through the air outlet duct 52. The water passing through the filter cabin enters the water tank 8, and the filtered water will also be recycled and supplied to the hydrodynamic fan 1. The negative pressure suction dust removal device based on the Venturi effect has a simple structure, small size and mass, is easy to move, has low noise and low daily maintenance cost, has good application effect and high promotion value.

[0048] like Figure 1 As shown, optionally, a plurality of air atomizing nozzles 6 and a lubricant adding system are further provided on the top plate of the air inlet duct 51, and the plurality of air atomizing nozzles 6 are arranged at intervals, and the water tank 8 is connected to the water inlet of the air atomizing nozzle 6. The air atomizing nozzle 6 and the lubricant adding system are provided at the upper end of the air inlet duct 51, and the air atomizing nozzles 6 are arranged in sequence along the air inlet direction, and the inhaled dust-containing airflow is sprayed with a mixture of water and dust suppressant to catch dust under the action of the water-powered fan 1 and the air atomizing nozzle 6, so as to filter and remove coal, rock powder, etc. The filtered water will also be recycled by the air atomizing nozzle 6.

[0049] like Figure 2 and Figure 3As shown, optionally, the venturi tube 2 includes an air suction pipe, an air outlet pipe 22, an inner ring 23, a diameter adjustment module 24 and a track 25, the air suction pipe and the air outlet pipe 22 are connected, a part of the inner ring 23 is located in the air suction pipe, and the other part is located in the air outlet pipe 22, the diameter adjustment module 24 is located in the inner ring 23, a track 25 is provided between the air suction pipe and the air outlet pipe 22, and the diameter adjustment module 24 is slidably arranged on the track 25. It can be understood that the venturi tube 2 is arranged below the air intake pipe and above the settling chamber 52. A fixing plate 26 is provided at the inlet end of the air suction pipe, and the fixing plate 26 is connected to the air intake pipe 51. It can be understood that the air intake pipe 21 is provided with a first track 25, and the air outlet pipe 22 is provided with a second pipe, and the diameter adjustment module 24 can be moved and positioned on the first track 25 and the second track 25, and the diameter adjustment module 24 can also be separated from the inner ring 23. When the diameter adjustment module 24 is separated from the inner ring 23, the inner diameter becomes larger.

[0050] In this embodiment, there are multiple Venturi tubes 2, and the multiple Venturi tubes 2 are arranged in a 3×4 array.

[0051] The water- and dust-containing airflow is sucked through the secondary speed-increasing and pressure-reducing effect of the Venturi tube 2, and the inner diameter of the inner ring 23 is adjusted by the diameter adjustment module 24 according to actual needs. The diameter adjustment module 24 can also move on the guide rail so that larger dust-containing airflow particles are settled below the settling chamber 52.

[0052] Alternatively, if Figure 6 and Figure 7 As shown, the mud removal component 4 includes an air motor 41, a screw 43 and a mud removal baffle 42. The air motor 41 is fixedly arranged in the box body, the air motor 41 is transmission connected to the screw 43, the screw 43 is rotatably arranged in the box body, the mud removal baffle 42 is threadedly connected to the screw 43, and a sewage chamber 55 is also provided in the box body. The screw 43 and the mud removal baffle 42 are located in the sewage chamber 55. A sewage cover plate is also provided in the box body, and the sewage cover plate is provided with multiple through holes, which connect the sedimentation chamber 52 and the sewage chamber 55.

[0053] Optionally, a mud discharge port is provided at the lower end of the box body, and the mud discharge port is communicated with the sewage chamber 55, and the mud discharge plug 9 can block or open the mud discharge port.

[0054] The sewage in the sedimentation chamber 52 will enter the sewage chamber 55 through the through hole of the sewage cover plate, and the sewage cover plate can also prevent the sewage in the sewage chamber 55 from overflowing. The pneumatic motor 41 can drive the lead screw 43 to rotate, and the rotation of the lead screw 43 can drive the mud removal baffle 42 to move along the extension direction of the lead screw 43, thereby pushing the mud to move and push the mud to the mud discharge port.

[0055] Specifically, the desilting baffle 42 is mounted on the lead screw through a fixing block 44, the fixing block 44 and the desilting baffle 42 are connected through hexagon socket bolts, and lead screw positioning modules 45 are installed at both ends of the lead screw 43, and the lead screw positioning modules 45 can support the lead screw 43. One end of the coupling 46 is connected to the lead screw 43, and the other end of the coupling 46 is connected to the pneumatic motor 41 through a flange 47. The pneumatic motor 41 is provided with an air inlet 48, and the pneumatic motor 41 is pneumatic.

[0056] Optionally, the desilting assembly 4 further includes a position sensor, which can detect the position of the desilting baffle 42. The fixed block 44 is provided with a position sensor, which can detect the position of the desilting baffle 42. When it is detected that the desilting baffle 42 is located at one end of the sewage chamber 55, the pneumatic motor 41 is controlled to change the rotation direction so that the desilting baffle 42 moves in the opposite direction.

[0057] like Figure 1 As shown, optionally, a polymer filter 71 is provided in the filter cabin, one end of the polymer filter 71 is connected to the sewage chamber 55, and the other end is connected to the water tank 8. The sewage in the sewage chamber 55 enters the water tank 8 after being purified by the polymer filter 71.

[0058] Optionally, a drain outlet is provided at the lower end of the box body, the drain outlet is connected to the water tank 8, and the drain plug 10 can block or open the drain outlet.

[0059] Optionally, the filter cabin is further provided with a ball ring filter 72, a high-efficiency demisting net 73 and a baffle filter 74 which are connected in sequence, the ball ring filter 72 is connected to the air duct 53, the baffle filter 74 is connected to the air outlet duct 52, and the ball ring filter 72, the high-efficiency demisting net 73 and the baffle filter 74 are all connected to the water tank 8. Under the action of the ball filter, the dust-containing moist airflow that is initially separated is filtered once, and the filtered water is discharged into the water tank 8. The high-efficiency demisting net 73, i.e., the wire filter, under the action of the high-efficiency demisting net 73, the dust-containing moist airflow that is filtered once is filtered twice, and the filtered water is discharged into the bottom water tank 8. Under the action of the baffle filter 74, the moist airflow that is filtered twice is filtered three times, and the filtered clean water is discharged into the bottom water tank 8, and the filtered clean gas is discharged through the air outlet duct 52.

[0060] like Figure 4 As shown, optionally, the counter-rotating fan 3 includes a supporting mechanism 31, a forward-rotating blade 32, a reverse-rotating blade 33 and a motor 34, wherein the supporting mechanism 31 is fixedly arranged in the air duct 53, and the forward-rotating blade 32 and the reverse-rotating blade 33 are respectively arranged on both sides of the motor 34, and are both transmission-connected to the motor 34. Under the action of the counter-rotating fan 3, the dust-laden airflow in the settling chamber 52 is negatively sucked and accelerated, so that the dust-laden airflow quickly passes through the ball ring filter 72, the high-efficiency demisting net 73 and the baffle filter 74 of the filter cabin.

[0061] like Figure 5 As shown, optionally, the water-powered fan 1 includes a water-powered motor 13, a water shaft 12 and fan blades 11, the water-powered motor 13 is in transmission connection with the water shaft 12, and the fan blades 11 are connected with the water shaft 12. The water-powered motor 13 drives the water shaft 12 to rotate, and the water shaft 12 drives the fan blades 11 to rotate.

[0062] Optionally, a booster pump is provided in the hydrodynamic fan 1, and the booster pump generates pressurized water to directly drive the fan blades 11 to rotate, thereby increasing the suction air volume.

[0063] The working process of the negative pressure suction dust removal device based on the Venturi effect:

[0064] The negative pressure suction dust removal device based on the Venturi effect is moved to the area to be cleaned, and the staff starts the water power motor 13 of the water power fan 1 and the motor 34 of the cyclone fan 3. The water power motor 13 drives the fan blades 11 to rotate by driving the water shaft 12, so that the dust-containing airflow enters the air inlet duct 51 of the box body, and the dust-containing airflow is humidified by the spray of the water shaft 12; when the water power fan 1 rotates, the air atomizing nozzle 6 is started to atomize the mixed liquid of water and dust suppressant, and at the same time humidify the dust-containing airflow; the water-containing and dust-containing airflow is sucked through the secondary speed increase and pressure reduction effect of the Venturi tube 2, and passes through the suction pipe, the inner ring 23, and the air outlet pipe 22 in turn, and according to actual needs, a diameter adjustment module 24 is added to the inner ring 23, and the diameter adjustment module 24 is moved by the guide rail, so that larger dust-containing airflow particles will directly settle in the sewage chamber 55, and there is a sewage cover plate on the top of the sewage chamber 55 to prevent sewage from overflowing. The dust-containing airflow that has been initially separated Under the action of the counter-cyclone fan 3, the wastewater passes through the air duct 53 and will continue to be filtered by the ball ring filter 72, the high-efficiency demisting net 73 and the baffle filter 74 of the filter cabin, and finally forms clean gas to be discharged into the air outlet duct 52. The filtered water enters the water tank 8 through the cover plate of the water tank 8 under the action of gravity; the sewage in the sewage chamber 55 is separated into water and mud under the action of gravity, and the sludge is driven by the pneumatic motor 41 in the mud removal component 4 to drive the coupling 46 on the flange 47 to rotate the lead screw 43, and drive the mud discharge baffle fixed on the fixed block 44 to move, and the position sensor on the fixed block 44 is used to identify the position of the mud removal baffle 42. When the mud removal baffle 42 reaches the mud discharge port, a signal is sent to reverse the pneumatic motor 41, so that the mud removal baffle 42 performs horizontal reciprocating motion and pushes the sludge into the mud discharge port. The pneumatic motor 41 is fixed to the ground through a base, and the separated water enters the water tank 8 through the polymer filter 71; the water in the water tank 8 is discharged through the drain port.

[0065] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A negative pressure suction dust removal device based on the Venturi effect, characterized in that: include: A box body, wherein an air inlet duct (51), a settling chamber (52), an air duct (53) and an air outlet duct (54) are sequentially arranged in the box body; a plurality of air atomizing nozzles (6) and a lubricant adding system are also arranged on the top plate of the air inlet duct (51), and the plurality of air atomizing nozzles (6) are arranged at intervals; A water-powered fan (1) is arranged at the inlet end of the air inlet duct (51); the water-powered fan (1) comprises a water-powered motor (13), a water shaft (12) and fan blades (11); the water-powered motor (13) is transmission-connected to the water shaft (12), and the fan blades (11) are connected to the water shaft (12); the dust-laden airflow can be humidified by the spray energy of the water shaft (12); A venturi tube (2), wherein the input end of the venturi tube (2) is connected to the air inlet duct (51), and the output end of the venturi tube (2) is connected to the sedimentation chamber (52); A mud removal component (4), the mud removal component (4) being arranged below the air duct (53); a counter-cyclonic fan (3) and a filter cabin, wherein the counter-cyclonic fan (3) is arranged in the air duct (53), the counter-cyclonic fan (3) is located between the sedimentation chamber (52) and the filter cabin, and the filter cabin is connected to the air outlet duct (54); A water tank (8) is connected to the filter cabin, the water tank (8) is also connected to the water inlet of the water power fan (1), and the water tank (8) is also connected to the water inlet of the air atomizing nozzle (6).

2. The negative pressure suction dust removal device based on the Venturi effect according to claim 1 is characterized in that: The venturi tube (2) comprises an air suction pipe (21), an air outlet pipe (22), an inner sleeve ring (23), a diameter adjustment module (24) and a track (25); the air suction pipe (21) and the air outlet pipe (22) are connected; a portion of the inner sleeve ring (23) is located in the air suction pipe (21), and another portion is located in the air outlet pipe (22); the diameter adjustment module (24) is located in the inner sleeve ring (23); the track (25) is provided between the air suction pipe (21) and the air outlet pipe (22); and the diameter adjustment module (24) is slidably arranged on the track (25).

3. The negative pressure suction dust removal device based on the Venturi effect according to claim 1 is characterized in that: The desilting assembly (4) comprises an air motor (41), a lead screw (43) and a desilting baffle (42); the air motor (41) is fixedly arranged on the housing; the air motor (41) is transmission-connected to the lead screw (43); the lead screw (43) is rotatably arranged on the housing; the desilting baffle (42) is threadedly connected to the lead screw (43); a sewage cavity (55) is further provided in the housing; the lead screw (43) and the desilting baffle (42) are located in the sewage cavity (55); a sewage cover plate is further provided in the housing; the sewage cover plate is provided with a plurality of through holes; the through holes communicate the sedimentation cavity (52) and the sewage cavity (55).

4. The negative pressure suction dust removal device based on the Venturi effect according to claim 3 is characterized in that: The desilting assembly (4) further comprises a position sensor, which is capable of detecting the position of the desilting baffle (42).

5. The negative pressure suction dust removal device based on the Venturi effect according to claim 3 is characterized in that: A polymer filter (71) is provided in the filter cabin, one end of the polymer filter (71) is connected to the sewage chamber (55), and the other end is connected to the water tank (8).

6. The negative pressure suction dust removal device based on the Venturi effect according to claim 3 is characterized in that: It also includes a drain plug (10) and a mud discharge plug (9), the lower end of the box body is provided with a mud discharge port and a drain port, the mud discharge port is communicated with the sewage chamber (55), and the drain port is communicated with the water tank (8), the drain plug (10) can block or open the drain port, and the mud discharge plug (9) can block or open the mud discharge port.

7. The negative pressure suction dust removal device based on the Venturi effect according to claim 1, characterized in that: The filter cabin is also provided with a ball ring filter (72), a high-efficiency demisting net (73) and a baffle filter (74) which are connected in sequence; the ball ring filter (72) is connected to the air duct (53); the baffle filter (74) is connected to the air outlet duct (54); and the ball ring filter (72), the high-efficiency demisting net (73) and the baffle filter (74) are all connected to the water tank (8).

8. The negative pressure suction dust removal device based on the Venturi effect according to claim 1, characterized in that: The counter-rotating fan (3) comprises a supporting mechanism (31), forward-rotating blades (32), reverse-rotating blades (33) and a motor (34); the supporting mechanism (31) is fixedly arranged in the air duct (53); the forward-rotating blades (32) and reverse-rotating blades (33) are respectively arranged on both sides of the motor (34) and are both transmission-connected to the motor (34).

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