Ultrasonic atomization dust-settling device

Abstract

The application discloses an ultrasonic atomization dust-settling device, and belongs to the technical field of atmospheric pollution treatment equipment. The device comprises a spraying cylinder, a shunt cylinder, a flow guide assembly and an ultrasonic spraying array. One end of the spraying cylinder is an air inlet, and the other end is an air outlet. The shunt cylinder is coaxial with the spraying cylinder and is arranged in the air outlet. A cavity between the outer wall of the shunt cylinder and the inner wall of the spraying cylinder forms a wall-attached airflow cavity, and the inner side of the shunt cylinder forms a jet airflow cavity. The shunt cylinder is arranged in the spraying cylinder, and the shunt cylinder divides the airflow generated by a fan in the spraying cylinder into two paths. One path is sprayed from the wall-attached airflow cavity, and the other path is sprayed from the jet airflow cavity. An air wall that flows along the wall is formed on the inner wall of the air outlet. The water mist is blocked by the air wall and does not collide with the inner wall of the air outlet, thereby reducing the loss of the water mist when sprayed, making the sprayed water mist more dense, improving the probability of contact between dust in the atmosphere and the water mist, and reducing dust and dust suppression, thereby treating atmospheric dust pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of air pollution control equipment, and in particular to an ultrasonic atomization dust reduction device. Background Art

[0002] At present, in order to protect the atmospheric environment and reduce the dust that occurs in construction sites, mining sites or roads, dust removal and dust reduction devices are often used to eliminate floating dust in the atmosphere. These dust reduction devices usually use water as a separating agent to separate and remove dust from the air. However, existing dust reduction devices still have defects. For example, a dust removal device for mining disclosed in Chinese invention application No. 2018100931105 is equipped with a water supply and atomization system. The water outlet pipe is connected to an ultrasonic atomizing nozzle. The nozzle is combined with an ultrasonic generator and an air compressor to atomize water and mix it with compressed air to form high-pressure atomized water. The water is transported to the nozzle in the air supply tube through a high-pressure pipe. The air supply tube sprays the high-pressure atomized water into the dust area to achieve dust reduction.

[0003] The above solution has the following defects: when the water mist generated by the ultrasonic atomizing nozzle passes through the water outlet pipe, due to the narrowing of the channel and the rapid flow rate, part of the water mist will collide with each other and the pipe wall, and re-condense into water and flow back, resulting in the water mist generated by the ultrasonic atomizing nozzle not being fully utilized. Summary of the Invention

[0004] In response to the above-mentioned technical deficiencies, the purpose of the present invention is to provide an ultrasonic atomization dust reduction device. By setting a diversion tube and a guide component, a wall-adhering airflow can be formed at the air outlet to prevent water mist from hitting the inner wall of the air outlet. At the same time, it is convenient to adjust the water mist spray range and improve the dust reduction effect.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an ultrasonic atomization dust reduction device, comprising:

[0006] A spray barrel, one end of which is an air inlet and the other end is an air outlet;

[0007] A diverter tube is provided in the air outlet and is coaxial with the nozzle, the cavity between the outer wall of the diverter tube and the inner wall of the nozzle forms a wall-attached airflow cavity, and the inner side of the diverter tube forms a jet airflow cavity;

[0008] A flow guide assembly is provided in the diverter tube, and includes a plurality of guide vanes, which are evenly distributed circumferentially with the axis of the diverter tube as the center;

[0009] An ultrasonic spray array is provided on the side of the guide assembly away from the air outlet, and is used to generate water mist;

[0010] Among them, a fan for supplying air to the jet air flow cavity and the wall air flow cavity is provided at the air inlet of the nozzle, and the air flow velocity in the wall air flow cavity is greater than the air flow velocity in the jet air flow cavity; the nozzle is provided with an adjustment mechanism for adjusting the angle of the guide vane.

[0011] Preferably, the adjustment mechanism comprises:

[0012] A gear ring, the gear ring being rotatably mounted on the spray barrel and being coaxial with the spray barrel;

[0013] A plurality of rotating shafts, a plurality of guide vanes are respectively fixed on the plurality of rotating shafts, and the rotating shafts are rotatably mounted on the spray barrel;

[0014] A plurality of gears 1, each of which is rotatably mounted on ends of a plurality of rotating shafts located outside the spray barrel;

[0015] The gear ring is meshed with all the gears. When the gear ring rotates, all the gears rotate and drive the guide vanes to rotate around the rotating shaft, thereby changing the diversion direction.

[0016] Preferably, a guide ball is fixed in the diverter tube, and the center of the guide ball is located on the axis of the diverter tube; the end of the guide plate close to the guide ball is provided with a concave surface that fits with the surface of the guide ball.

[0017] Preferably, the rotating shaft is located at the symmetry center of the guide plate, and the axis of the rotating shaft passes through the center of the guide ball.

[0018] Preferably, the ultrasonic spray array comprises:

[0019] Multiple direction-changing shafts, the direction-changing shafts are rotatably mounted on the spray barrel, and the direction-changing shafts and the rotating shafts are staggered;

[0020] A plurality of ultrasonic spray units are respectively arranged at one end of a plurality of direction-changing shafts located in the diverter cylinder; each ultrasonic spray unit includes a plurality of ultrasonic spray heads.

[0021] Preferably, a gear 2 meshing with a gear ring is fixed to one end of the direction-changing shaft extending out of the spray barrel, and when the gear ring rotates, the direction-changing shaft rotates at the same speed as the rotating shaft.

[0022] Preferably, a water supply ring is provided outside the spray barrel, a plurality of sub-water pipes 1 are connected to the water supply ring, a sub-water pipe 2 is fixed on the changing shaft, the ultrasonic spray head is installed on the sub-water pipe 2, the sub-water pipe 1 passes through the barrel wall of the spray barrel and the diversion barrel, and the sub-water pipe 1 and the sub-water pipe 2 are connected through a bellows.

[0023] Preferably, an annular inner recess is provided at one end of the nozzle close to the air outlet, the air outlet is in the shape of an outward-expanding trumpet, and the distance between the inner recess, the inner wall and the diversion tube is smaller than the distance between the inner wall of the nozzle and the diversion tube.

[0024] Preferably, the spray end of the ultrasonic wave spray array extends out of the shunt cylinder; the end of the shunt cylinder away from the fan extends out of the narrowest part of the inner recess and is in the air outlet.

[0025] Preferably, a rotary seat is arranged below the spray cylinder, a hinged seat is fixed on the rotary seat, the spray cylinder is hinged on the hinged seat, a push rod is hinged on the rotary seat, and the end of the push rod away from the rotary seat is hinged with the spray cylinder.

[0026] The beneficial effects of the present application are that:

[0027] The shunt cylinder in the spray cylinder can divide the airflow generated by the fan in the spray cylinder into two paths, one path is sprayed out of the wall-attached airflow chamber, and the other path is sprayed out of the jet airflow chamber. Since the flow speed of the airflow in the wall-attached airflow chamber is faster than the flow speed of the airflow in the jet airflow chamber, an air wall that flows along the wall is formed on the inner wall of the air outlet. In the process of blowing the water mist generated by the ultrasonic wave spray array out of the air outlet, the water mist is blocked by the air wall and does not collide with the inner wall of the air outlet, thereby reducing the loss of the water mist when it is sprayed out, making the sprayed water mist more dense, increasing the probability of contact between dust in the atmosphere and the water mist, and thereby playing a role in dust suppression and dust reduction. The present application is provided with a plurality of guide vanes on the inner side of the shunt cylinder, which are uniformly distributed on the circumferential inner wall of the shunt cylinder. The inclination angle of the guide vanes can be adjusted by the adjusting mechanism. When the plane in which the guide vanes are located coincides with the axis of the shunt cylinder, the airflow is blown straight out of the jet airflow chamber. At this time, the water mist is relatively concentrated, and the water mist can be sprayed to a relatively long distance. When the guide vanes are inclined at a certain angle, the airflow can be guided to rotate, so that the airflow blown out of the shunt cylinder has a rotating and diverging driving potential, thereby making the water mist more divergent when it is blown out, increasing the spraying range, and thereby increasing the area covered by the water mist, so that a large range of atmospheric floating dust pollutants come into contact with the water mist, causing the floating dust particles to increase in weight and settle, and improving the effect of atmospheric pollution control. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 A front perspective view of an ultrasonic wave atomizing dust falling device according to an embodiment of the present application.

[0030] Figure 2 A front perspective view of an ultrasonic wave atomizing dust falling device according to an embodiment of the present application. Figure 1 An enlarged view of part A in FIG.

[0031] Figure 3 A rear-view stereoscopic diagram of an ultrasonic atomization dust reduction device provided in an embodiment of the present invention.

[0032] Figure 4 A front view of an ultrasonic atomization dust reduction device in direct spraying state provided by an embodiment of the present invention.

[0033] Figure 5 A front view of an ultrasonic atomization dust reduction device in a rotary spraying state provided by an embodiment of the present invention (the fan and grid are omitted in the figure).

[0034] Figure 6 A cross-sectional view of an ultrasonic atomization dust reduction device provided in an embodiment of the present invention.

[0035] Figure 7 for Figure 6 A partial enlarged view of point B in the middle.

[0036] Description of reference numerals:

[0037] 1. Spray tube, 2. Air inlet, 3. Air outlet, 4. Diverter tube, 5. Wall-attached airflow chamber, 6. Jet airflow chamber, 7. Guide vane, 8. Fan, 9. Gear ring, 10. Rotating shaft, 11. Gear 1, 12. Guide ball, 13. Direction-changing shaft, 14. Ultrasonic spray unit, 15. Ultrasonic spray head, 16. Gear 2, 17. Water supply ring, 18. Sub-water pipe 1, 19. Sub-water pipe 2, 20. Bellows, 21. Inner recess, 22. Rotating seat, 23. Articulated seat, 24. Push rod, 25. Grid. DETAILED DESCRIPTION

[0038] 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.

[0039] Example 1:

[0040] like Figures 1 to 7As shown, a first embodiment of the present invention provides an ultrasonic atomization dust reduction device for promoting the settling of airborne dust. The device comprises a nozzle 1, with an air inlet 2 at one end and an air outlet 3 at the other. A protective grille 25 is fixed to the air inlet 2. The nozzle 1 is placed horizontally, with a rotating seat 22 at its bottom. The rotating seat 22 comprises an inner ring and an outer ring rotatably mounted on the inner ring. The inner ring is fixed with positioning holes and can be fixed to a mobile device or other base. A hinged seat 23 is fixedly mounted on the outer ring, and a push rod 24 is hingedly connected to the outer ring. The push rod 24 can be a hydraulic or electric push rod 24. The bottom of the outer wall of the nozzle 1 is hinged to the hinged seat 23, and the end of the push rod 24 away from the rotating seat 22 is hinged to the nozzle 1. With this arrangement, the outer ring can be rotated to adjust the orientation of the nozzle 1, and the push rod 24 can be activated to change the extension length of the push rod 24 and adjust the tilt angle of the nozzle 1.

[0041] like Figure 6 and Figure 7 As shown, a diverter tube 4 is fixedly installed in the nozzle 1 through a bracket. The diverter tube 4 is a hollow cylinder with open ends, and the axis of the diverter tube 4 is collinear with the axis of the nozzle 1. The portion of the nozzle 1 near the air outlet 3 shrinks inward to form an annular inner concave portion 21, while the air outlet 3 presents an outward-expanding trumpet shape. Figure 6 and Figure 7 It can be seen that a wall-adhering airflow cavity 5 is formed between the outer wall of the diverter tube 4 and the inner wall of the nozzle 1. The diameter of the wall-adhering airflow cavity 5 is smallest at the narrowest part of the inner recess 21. At the same time, the diverter tube 4 extends from the end of the air outlet 3 to the air outlet 3 and is located at a position of the air outlet 3 near the inner recess 21. A fan 8 is provided at one end of the nozzle 1 near the air inlet 2, and a jet airflow cavity 6 is formed on the inner side of the diverter tube 4. The fan 8 supplies air to the wall-adhering airflow cavity 5 and the jet airflow cavity 6. The diameter of the wall-adhering airflow cavity 5 shrinks from large to small, and the space gradually decreases, so the gas flow rate gradually increases. Since the size of the jet airflow cavity 6 is relatively uniform, the gas flow rate changes relatively little, which makes the airflow velocity in the wall-adhering airflow cavity 5 greater than the airflow velocity in the jet airflow cavity 6, which forms a wall-adhering air wall on the inner wall of the air outlet 3.

[0042] An ultrasonic spray unit 14 is provided at the outlet end of the diverter tube 4 to spray water mist. The sprayed water mist is pushed out of the end of the diverter tube 4 by the air flow in the jet air chamber 6. However, due to the obstruction of the air wall against the wall, the sprayed water mist does not splash onto the inner wall of the air outlet 3, thus avoiding waste of water mist.

[0043] In order to better guide the airflow ejected from the jet airflow chamber 6, the present invention sets a flow guide component in the diversion cylinder 4. Figures 4 to 6As shown, the flow guide assembly designed by the present invention includes twelve rotating shafts 10 and twelve flow guide vanes 7 that are evenly distributed around the axis of the diverter barrel 4. The rotating shafts 10 are also evenly distributed around the axis of the diverter barrel 4. The rotating shafts 10 are perpendicular to the axis of the diverter barrel 4 and are located on the symmetrical center axis of the flow guide vanes 7. In this way, when the rotating shafts 10 rotate, the flow guide vanes 7 will rotate around the corresponding rotating shafts 10 as the center axis, thereby changing the inclination angle to adjust the diversion direction. Figure 4 As shown, when the plane of the guide plate 7 coincides with the axis of the diverter tube 4, the airflow in the jet air cavity 6 blows out directly, driving the water mist generated by the ultrasonic spray array to form a concentrated jet flow, achieving long-distance dust reduction; Figure 5 As shown, when the guide vane 7 is tilted, it guides the airflow to rotate and diverge, giving the sprayed water mist a divergent inertia and expanding the coverage area of ​​the water mist. An adjustment mechanism can be designed to change the angle of the guide vane 7 to achieve flexible switching of the water mist spray pattern to meet dust reduction needs at different distances and ranges.

[0044] Example 2:

[0045] Based on the first embodiment, Figures 1 to 2 As shown, the adjustment mechanism designed in the present invention includes a gear ring 9 rotatably mounted on the spray barrel 1 via a slewing bearing. Twelve rotating shafts 10 are fixedly connected to the twelve guide vanes 7, one end of which extends out of the spray barrel 1. A gear 11 is mounted on the end of the rotating shaft 1 that meshes with the gear ring 9. Thus, when the gear ring 9 rotates, gear 11 drives all the rotating shafts 10 to rotate synchronously, causing all the guide vanes 7 to change their inclination angles around the rotating shaft 10, making adjustment easy. A motor can be fixedly mounted on the outer wall of the spray barrel 1, and a gear that meshes with the gear ring 9 is fixed to the motor's output shaft. This allows the motor to drive the gear ring 9 to rotate.

[0046] like Figure 5 and Figure 6 As shown, a guide ball 12 is also fixed inside the diverter tube 4 via a bracket, with the center of the guide ball 12 located on the axis of the diverter tube 4. The end of the guide vane 7 closest to the guide ball 12 has a concave surface that mates with the surface of the guide ball 12, and the axis of the rotating shaft 10 passes through the center of the guide ball 12. Thus, when the adjustment mechanism drives the rotating shaft 10 to rotate, the guide vane 7 rotates about the rotating shaft 10, and the concave surface of the guide vane 7 always slides against the surface of the guide ball 12. In this way, the inner wall of the diverter tube 4, the guide vane 7, and the guide ball 12 cooperate to fully guide the airflow and prevent turbulence between the guide vane 7 and the guide ball 12.

[0047] Since the high-speed airflow in the wall-adhering airflow cavity 5 forms an air wall at the air outlet 3, it blocks the water mist from colliding with the inner wall of the air outlet 3. The airflow in the jet airflow cavity 6 forms a stable rotating or straight jet flow after being double-guided by the guide vane 7 and the guide ball 12. When the guide vane 7 is tilted, the airflow in the jet airflow cavity 6 is guided by the guide vane 7, generating a spiral motion, causing the water mist to be ejected in a conical shape, and the coverage radius is increased compared to the straight jet state. Through the cooperation of the guide ball 12 and the concave surface of the guide vane 7, the airflow resistance is reduced, the diversion efficiency is improved, and the water mist particles are distributed more evenly in the airflow. It is particularly suitable for medium-distance and large-scale dust reduction scenarios, such as the periphery of construction sites or on both sides of roads.

[0048] Example 3:

[0049] like Figure 2 and Figure 5 As shown, the present invention further optimizes the ultrasonic spray array structure based on the first and second embodiments, specifically including twelve turning shafts 13 rotatably mounted on the spray barrel 1, the turning shafts 13 being coplanar with the rotating shaft 10 and staggered with the rotating shaft 10. A sub-water pipe 19 is fixed to one end of the turning shaft 13 located in the diversion barrel 4, and an ultrasonic spray unit 14 is mounted on the sub-water pipe 19. Each ultrasonic spray unit 14 includes three ultrasonic spray heads 15. A water supply ring 17 is provided on the outer shell of the spray barrel 1, and twelve sub-water pipes 18 are connected to the water supply ring 17. These twelve sub-water pipes 18 pass through the walls of the spray barrel 1 and the diversion barrel 4, and are connected to the sub-water pipe 19 on the turning shaft 13 through a bellows 20. In this way, when the turning shaft 13 rotates, the bellows 20 expands and contracts to ensure that the sub-water pipe 18 and the sub-water pipe 19 remain connected, thereby ensuring a stable water supply to the ultrasonic spray heads 15.

[0050] The present invention also fixes a second gear 16, meshing with the gear ring 9, to the end of the deflector shaft 13 extending outside the spray barrel 1. This allows the deflector shaft 13 to rotate at the same speed as the rotating shaft 10 when the gear ring 9 rotates to adjust the angle of the guide vane 7. This causes the ultrasonic spray head 15 to rotate at the same angle as the guide vane 7, ensuring that the ultrasonic spray head 15 always aligns with the direction of the diverted airflow. The ultrasonic spray head 15 rotates with the deflector shaft 13 to an angle that matches the direction of the airflow, allowing the water mist particles to fully mix with the rotating airflow and be ejected from the air outlet 3 in a spiral radial trajectory, thereby increasing the area covered by the dust reduction zone.

[0051] When using, Figure 6As shown, the direction of the spray barrel 1 is adjusted by rotating the swivel seat 22, and the inclination angle of the air outlet 3 is adjusted by adjusting the extension length of the push rod 24. The fan 8 is started and water is supplied to all ultrasonic spray heads 15 through the water supply ring 17, so that the ultrasonic spray heads 15 spray water mist. After the air flow driven by the fan 8 is diverted by the diverter tube 4, part of it passes through the jet air flow chamber 6, and the other part passes through the wall-adhering air flow chamber 5. After the guide plate 7 guides the air flow, the air flow sprays the water mist out. The air flow velocity flowing out of the wall-adhering air flow chamber 5 is greater than the air flow velocity ejected from between the guide plates 7. Therefore, the water mist is blocked by the air flow and does not splash or collide with the inner wall of the air outlet 3, but is ejected with the air flow. When it is necessary to adjust the spray range, the gear ring 9 can be rotated to change the inclination angle of the guide plate 7 and the ultrasonic spray head 15.

[0052] 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. An ultrasonic atomization dust suppression device, characterized in that: include: A spray barrel, one end of which is an air inlet and the other end is an air outlet; A diverter tube is provided in the air outlet and is coaxial with the nozzle, the cavity between the outer wall of the diverter tube and the inner wall of the nozzle forms a wall-attached airflow cavity, and the inner side of the diverter tube forms a jet airflow cavity; A flow guide assembly is provided in the diverter tube, and includes a plurality of guide vanes, which are evenly distributed circumferentially with the axis of the diverter tube as the center; An ultrasonic spray array is provided on the side of the guide assembly away from the air outlet, and is used to generate water mist; The air inlet of the nozzle is provided with a fan for supplying air to the jet airflow cavity and the wall airflow cavity, and the airflow velocity in the wall airflow cavity is greater than the airflow velocity in the jet airflow cavity; the nozzle is provided with an adjustment mechanism for adjusting the angle of the guide vane; The regulating mechanism comprises: A gear ring, the gear ring being rotatably mounted on the spray barrel and being coaxial with the spray barrel; A plurality of rotating shafts, a plurality of guide vanes are respectively fixed on the plurality of rotating shafts, and the rotating shafts are rotatably mounted on the spray barrel; A plurality of gears 1, each of which is rotatably mounted on ends of a plurality of rotating shafts located outside the spray barrel; The gear ring is meshed with all the gears. When the gear ring rotates, all the gears rotate and drive the guide vanes to rotate around the rotating shaft, changing the diversion direction. The ultrasonic spray array comprises: Multiple direction-changing shafts, the direction-changing shafts are rotatably mounted on the spray barrel, and the direction-changing shafts and the rotating shafts are staggered; Multiple ultrasonic spray units are respectively arranged at one end of the multiple direction-changing shafts located in the diverter cylinder; each ultrasonic spray unit includes multiple ultrasonic spray heads; The end of the said changing shaft extending out of the spray barrel is fixed with a second gear meshing with the gear ring. When the gear ring rotates, the said changing shaft rotates at the same speed as the rotating shaft. A water supply ring is provided outside the spray barrel, and a plurality of sub-water pipes 1 are connected to the water supply ring. Sub-water pipe 2 is fixed on the changing shaft, and the ultrasonic spray head is installed on sub-water pipe 2. Sub-water pipe 1 passes through the wall of the spray barrel and the diversion barrel, and sub-water pipe 1 and sub-water pipe 2 are connected through a bellows.

2. The ultrasonic atomization dust reduction device according to claim 1, characterized in that: A guide ball is fixed in the diverter tube, and the center of the guide ball is located on the axis of the diverter tube; the end of the guide plate close to the guide ball is provided with a concave surface that fits the surface of the guide ball.

3. The ultrasonic atomization dust reduction device according to claim 2, characterized in that: The rotating shaft is located at the symmetry center of the guide plate, and the axis of the rotating shaft passes through the center of the guide ball.

4. The ultrasonic atomization dust reduction device according to claim 1, characterized in that: An annular inner concave portion is provided at one end of the nozzle close to the air outlet, and the air outlet is in the shape of an outwardly expanding trumpet. The distance between the inner wall of the inner concave portion and the diverter tube is smaller than the distance between the inner wall of the nozzle and the diverter tube.

5. The ultrasonic atomization dust reduction device according to claim 4, characterized in that: The spray end of the ultrasonic spray array extends out of the diverter tube; one end of the diverter tube away from the fan extends out of the narrowest part of the inner concave part and is located in the air outlet.

6. The ultrasonic atomization dust reduction device according to claim 1, characterized in that: A swivel seat is provided below the spray barrel, a hinge seat is fixed on the swivel seat, the spray barrel is hinged on the hinge seat, a push rod is hinged on the swivel seat, and one end of the push rod away from the swivel seat is hinged to the spray barrel.

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