An environmentally friendly dust removal fog cannon

Abstract

The present invention discloses an environmentally friendly dust removal fog cannon, which belongs to the technical field of sanitation vehicles. It includes: the front end of the outer wind tube is fixedly connected with the fan assembly; the inner wind tube is sleeved in the outer wind tube, the front end of the inner wind tube is sealed and connected with the inner wall of the outer wind tube, and a gap is left between the outer wall of the rear end of the inner wind tube and the inner wall of the rear end of the outer wind tube; the water-dividing damper is installed in the gap; wherein the water-dividing damper includes a flexible ring sleeved on the inner wind tube; the outer wall of the flexible ring fits with the inner wall of the outer wind tube, and a uniformly distributed high-pressure flow channel is formed between the water groove of the outer wall of the flexible ring and the inner wall of the outer wind tube; the water flow provided by the water supply assembly passes through the high-pressure flow channel and is sprayed toward the intersection of the rear end of the inner wind tube and the rear end of the outer wind tube. The present invention can not only effectively disperse the water flow and form a fine spray through the water-dividing damper, but also reduce the vibration and noise of the equipment through the action of the water film; at the same time, the added premixing chamber enables the external air to be fully mixed with the ejected water flow in the premixing chamber.

Description

Technical Field

[0001] The invention relates to the technical field of sanitation vehicles, and in particular to an environmentally friendly dust removal fog cannon. Background Art

[0002] Mist cannons are widely used in various construction sites, sand mining sites, mines, road construction and other places with serious dust pollution. These areas will generate a lot of dust during the operation, which not only affects the health of workers, but also may cause long-term pollution to the surrounding environment. Mist cannons can effectively eliminate or reduce the dust content in the air through their efficient spray mechanism.

[0003] When the fan in the fog cannon rotates at a faster speed, it will generate higher wind pressure, pushing the high-pressure airflow to be ejected from the air duct of the sprayer. However, when this high-speed and high-pressure airflow is ejected through the tail end of the air duct, it will produce a strong reaction force on the end of the air duct, causing the tail end of the air duct to vibrate and generate loud noise. This vibration and noise not only affect the stability and service life of the equipment, but may also have adverse effects on the surrounding environment and personnel. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the present invention provides an environmentally friendly dust removal fog cannon.

[0005] The present invention adopts the following technical solution: an environmentally friendly dust removal fog cannon, comprising:

[0006] A fan assembly for providing high-pressure air flow;

[0007] An outer air duct, the front end of which is fixedly connected to the air outlet of the fan assembly;

[0008] The inner air duct is sleeved in the outer air duct; the front end of the inner air duct is sealed with the inner wall of the outer air duct, and a gap is left between the outer wall of the rear end of the inner air duct and the inner wall of the rear end of the outer air duct;

[0009] A water-dividing vibration damper installed in the gap;

[0010] The water-dividing vibration damper comprises a flexible ring which is fixedly mounted on the outer wall of the inner wind tube; the outer wall of the flexible ring is fitted with the inner wall of the outer wind tube, and a plurality of water grooves are provided on the outer wall of the flexible ring, and a uniformly distributed high-pressure flow channel is formed between the water grooves on the outer wall of the flexible ring and the inner wall of the outer wind tube;

[0011] The water-dividing vibration damper also includes a water supply component that provides high-pressure water flow to the water tank of the flexible ring; the water flow provided by the water supply component passes through the high-pressure flow channel and is sprayed toward the intersection of the rear ends of the inner and outer wind cylinders.

[0012] Further, the outer wall of the flexible ring is provided with an annular groove; each group of the water grooves comprises a long water groove and two short water grooves provided along the axial direction of the flexible ring, the two short water grooves are arranged on both sides of the long water groove, and the middle parts of the long water groove and the short water groove are both connected to the annular groove;

[0013] Among them, one end of the long water groove penetrates to the rear end of the flexible ring, and the high-pressure flow channel is formed between the long water groove and the inner wall of the outer wind tube.

[0014] A groove is provided on the outer wall of the front end of the flexible ring, and a sealing ring is installed in the groove.

[0015] A plurality of evenly distributed radial holes are provided at the bottom of the annular groove, and an axial hole corresponding to and connected with the radial holes is provided on the end surface of the front end of the annular groove, and the axial hole is connected with the water supply component.

[0016] The water supply assembly comprises:

[0017] A T-shaped sleeve is sleeved and fixed on the inner wind cylinder; the flexible ring is sleeved and fixed on the T-shaped sleeve;

[0018] An annular water storage tank, fixed on the edge of the end of the T-shaped sleeve;

[0019] A plurality of evenly distributed water outlet joints are all connected to the annular water storage tank; the water outlet joints are used to provide high-pressure water flow to the water tank of the flexible ring;

[0020] A water inlet joint, connected to the annular water storage tank;

[0021] A pipe joint is passed through the side wall of the outer air duct and is connected with the water inlet joint.

[0022] The outer air duct is provided with a through hole for the pipe joint to pass through, and a sealing sleeve is sleeved between the pipe joint and the through hole of the outer air duct.

[0023] The rear end of the outer wind cylinder is fixedly connected to an outer wind hood, and a premixing chamber is formed between the rear end of the flexible ring and the outer wind hood;

[0024] A circle of evenly distributed air inlet holes communicating with the premixing chamber is arranged on the circumferential surface of the rear end of the outer air cylinder, and a filter screen covering the air inlet holes is mounted on the rear end of the outer air cylinder.

[0025] The rear end of the inner air cylinder is fixedly connected with an inner air diffuser cover, which positions the flexible ring on the inner air cylinder; the inner air diffuser cover is provided with a circle of evenly distributed ventilation slots connected with the premixing chamber;

[0026] The inner wall of the outer air collecting cover has an arc-shaped air guiding surface for guiding air toward the ventilation slot.

[0027] The inner wall of the outer air cylinder has a step opposite to the front end of the inner air cylinder, and an elastic gasket is arranged between the step and the front end of the inner air cylinder;

[0028] A circle of positioning grooves is provided on the circumferential surface at the front end of the inner air cylinder, and the front side wall of the positioning grooves is a conical surface;

[0029] The outer air duct has a plurality of evenly distributed positioning holes on its circumferential surface, which are opposite to the positioning grooves. A positioning block is passed through the positioning holes. The positioning block is fixedly connected to the outer air duct, and the inner end of the positioning block is inserted into the positioning groove and fits with the conical surface on the positioning groove.

[0030] The fan assembly and the outer wind tube are fixedly connected as one body through a flange plate, a front hinge seat is fixed under the fan assembly; and a rear hinge seat is fixed under the outer wind tube.

[0031] The beneficial effects of the present invention are:

[0032] The front end of the inner air duct is fixed by an elastic gasket and a positioning block, which not only ensures the sealing of the connection, but also ensures the accurate positioning of the inner air duct in the axial and radial directions;

[0033] The rear end of the inner wind tube is supported by a water-dividing vibration damper, in which the flexible ring effectively disperses the water flow through the water groove and annular groove design on it, and sprays the water flow to the intersection of the inner wind tube and the outer wind tube through the high-pressure flow channel to form a spray; the water film in the long water groove and the short water groove can also play a vibration reduction role, reducing the vibration and noise of the inner wind tube;

[0034] The added outer air collecting hood and inner air expanding hood form a premixing chamber behind the flexible ring. Under the action of negative pressure, the outside air can be fully mixed with the ejected water flow in the premixing chamber, and finally merge with the high-pressure air in the air duct, thereby improving the uniformity of the spray. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0036] Figure 1 It is a three-dimensional diagram of an environmentally friendly dust removal fog cannon of the present invention.

[0037] Figure 2 This is a front view of an environmentally friendly dust removal fog cannon of the present invention.

[0038] Figure 3 for Figure 2 Center AA view.

[0039] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0040] Figure 5 It is a three-dimensional diagram of the water supply component in the present invention.

[0041] Figure 6 It is a three-dimensional diagram of the flexible ring in the present invention.

[0042] Figure 7 It is a schematic diagram of the installation of the inner air duct and the outer air duct in the present invention.

[0043] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0044] Description of reference numerals:

[0045] 1. Fan assembly; 11. Front hinge seat; 12. Flange;

[0046] 2. External air duct; 21. Air inlet; 22. Filter; 23. Step; 24. Elastic gasket; 25. Positioning hole; 26. Positioning block; 27. Rear hinge seat;

[0047] 3. Inner air duct; 31. Positioning slot;

[0048] 4. Water-dividing shock absorber;

[0049] 400, high pressure flow channel;

[0050] 41, flexible ring; 411, sealing ring; 412, annular groove; 413, long water groove; 414, short water groove; 415, radial hole; 416, axial hole;

[0051] 42. Water supply assembly; 421. T-shaped sleeve; 422. annular water storage tank; 423. water outlet joint; 424. water inlet joint; 425. pipe joint; 426. sealing sleeve;

[0052] 5. External wind hood; 51. Premixing chamber; 52. Curved air guide surface;

[0053] 6. Internal expansion hood; 61. Ventilation slots. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Embodiment 1:

[0056] Combination Figures 1 to 3 As shown, the present invention provides an environmentally friendly dust removal fog cannon. The inner wind tube 3 is mounted in the outer wind tube 2. The diameter of the rear end of the inner wind tube 3 is smaller than the diameter of the front end of the inner wind tube 3. The inner wind tube 3 has a smoothly transitioned conical section. The outer wall of the rear end of the inner wind tube 3 and the inner wall of the rear end of the outer wind tube 2 form a gap. The front end of the outer wind tube 2 and the inner wind tube 3 form an air duct.

[0057] Combination Figure 3 , Figure 7 and Figure 8 As shown, the front end of the inner air duct 3 is sealedly connected to the inner wall of the outer air duct 2 through a connecting component, which is used to support the front end of the inner air duct 3. The connecting component specifically includes:

[0058] The inner wall of the outer air duct 2 has a step 23 opposite to the front end of the inner air duct 3, and an elastic gasket 24 is arranged between the step 23 and the front end of the inner air duct 3. A circle of positioning grooves 31 is provided on the circumferential surface of the front end of the inner air duct 3, and the front side wall of the positioning groove 31 is a conical surface. Eight evenly distributed positioning holes 25 are provided on the circumferential surface of the outer air duct 2, and the positioning holes 25 are elongated holes; after the inner air duct 3 is installed in place, the positioning holes 25 are opposite to the positioning grooves 31. The positioning block 26 is inserted into the positioning hole 25, and the edge of the outer end of the positioning block 26 is in contact with the outer air duct 2 and fixedly connected by bolts. The inner end of the positioning block 26 is inserted into the positioning groove 31, and the front side of the inner end of the positioning block 26 is in contact with the conical surface on the positioning groove 31. The front end of the inner air duct 3 is matched with the inner wall of the outer air duct 2 with a small gap, and the axial position and radial position of the front end of the inner air duct 3 are positioned by eight positioning blocks 26.

[0059] Combination Figure 3 and Figure 4 As shown, the water-dividing vibration damper 4 is installed in the gap between the rear end of the inner wind tube 3 and the rear end of the outer wind tube 2, and is used to support the rear end of the inner wind tube 3 and disperse the water flow. The water-dividing vibration damper 4 includes a water supply component 42 and a flexible ring 41.

[0060] Combination Figures 3 to 5 As shown, the water supply assembly 42 is used to supply water to the flexible ring 41. The water supply assembly 42 includes a T-shaped sleeve 421, which is fixed in the positioning groove on the inner wind tube 3, and the front end of the T-shaped sleeve 421 has an annular edge. The annular water storage tank 422 is welded and fixed to the front side of the edge of the T-shaped sleeve 421, and a circle of evenly distributed water outlet joints 423 are arranged on the edge of the T-shaped sleeve 421, and the water outlet joints 423 are all connected to the annular water storage tank 422. Two symmetrical water inlet joints 424 are connected to the annular water storage tank 422, and the water inlet joints 424 are connected to the pipe joints 425 through threads, and the pipe joints 425 are connected to the water source. A through hole for the pipe joint 425 to pass through is opened on the outer wind tube 2, and a sealing sleeve 426 is set between the pipe joint 425 and the through hole of the outer wind tube 2.

[0061] Combination Figures 3 to 6 As shown, the flexible ring 41 is used for vibration reduction support and water flow dispersion. A circle of annular grooves 412 are provided on the outer wall of the flexible ring 41, and multiple groups of water grooves are also provided on the outer wall of the flexible ring 41. Each group of water grooves includes a long water groove 413 and two short water grooves 414 provided along the axial direction of the flexible ring 41, and the two short water grooves 414 are disposed on both sides of the long water groove 413. The middle parts of the long water groove 413 and the short water groove 414 are both connected to the annular groove 412. Among them, the rear end of the long water groove 413 penetrates to the rear end face of the flexible ring 41, and the front end of the long water groove 413 and the two ends of the short water groove 414 are not connected to the end face of the flexible ring 41. A plurality of evenly distributed radial holes 415 are provided at the bottom of the annular groove 412, and an axial hole 416 corresponding to and connected with the radial holes 415 is provided on the end face of the front end of the annular groove 412.

[0062] The flexible ring 41 is fixedly mounted on the T-shaped sleeve 421 and fits with the edge of the T-shaped sleeve 421. The water outlet joint 423 is inserted into the corresponding axial hole 416. The water in the annular water storage tank 422 can flow into the annular groove 412 through the water outlet joint 423, the axial hole 416, and the radial hole 415, and then flow into each long water groove 413 and short water groove 414. The outer wall of the flexible ring 41 fits with the inner wall of the outer wind tube 2, and a high-pressure flow channel 400 connected to the rear end face of the flexible ring 41 can be formed between the long water groove 413 and the inner wall of the outer wind tube 2. A groove is provided on the outer wall of the front end of the flexible ring 41, and a sealing ring 411 is installed in the groove. The addition of the sealing ring 411 can reduce the water flow in the long water groove 413 and the short water groove 414 from penetrating forward.

[0063] When working, the water flow is dispersed through the various high-pressure flow channels 400 between the flexible ring 41 and the inner wind tube 3, and then sprayed to the intersection of the rear end of the inner wind tube 3 and the rear end of the outer wind tube 2, and finally blown out by the high-pressure wind in the wind channel to form a spray;

[0064] The high-pressure water flow forms long and short water films in the long water groove 413 and the short water groove 414; when the high-pressure wind is ejected from the rear end of the inner wind cylinder 3, it will cause the rear end of the inner wind cylinder 3 to vibrate, and the long and short water films will be squeezed to offset the vibration of the inner wind cylinder 3 and reduce the fluctuation and noise at the rear end of the inner wind cylinder 3.

[0065] Embodiment 2:

[0066] Based on the above embodiment 1, Figures 1 to 4 As shown, in order to further disperse the water flow and improve the spray effect, this embodiment adds an outer wind collecting cover 5 and an inner wind expanding cover 6 at the rear ends of the outer wind tube 2 and the inner wind tube 3.

[0067] The rear end of the outer air cylinder 2 is connected to the outer air collecting hood 5 by threaded connection, and the rear end of the outer air collecting hood 5 is contracted inward. The rear end of the inner air cylinder 3 is fixed to the inner air expanding hood 6 by bolts, and the rear end of the inner air expanding hood 6 is expanded outward. A premixing chamber 51 is formed between the rear end of the flexible ring 41 and the inner side of the outer air collecting hood 5 and the outer side of the inner air expanding hood 6.

[0068] A circle of sinking grooves is provided on the circumferential surface at the rear end of the outer air cylinder 2, and a circle of evenly distributed air inlet holes 21 are provided at the bottom of the sinking grooves, and the air inlet holes 21 are opposite to and communicate with the premixing chamber 51. A filter screen 22 is provided outside the sinking grooves to prevent the air inlet holes 21 from being blocked by debris, and the filter screen 22 is positioned at the front end of the outer air collecting cover 5.

[0069] The front end of the inner air diffuser 6 abuts against the flexible ring 41 and the T-shaped sleeve 421 to achieve the positioning of the flexible ring 41 and the T-shaped sleeve 421. The inner air diffuser 6 is provided with a circle of evenly distributed ventilation slots 61 connected to the premixing chamber 51, and the inner wall of the outer air collecting hood 5 has an arc-shaped air guide surface 52 for guiding air to the ventilation slots 61.

[0070] During operation, the water flow is dispersed through the various high-pressure flow channels 400 between the flexible ring 41 and the inner wind tube 3, and then sprayed backward along the inner wall of the inner wind tube 3 to the air inlet 21 and the arc-shaped air guide surface 52;

[0071] The high-pressure airflow is ejected through the inner diffuser hood 6; under the action of negative pressure, the outside air enters the premixing chamber 51 through the air inlet 21 at the rear end of the outer air duct 2 and mixes with the ejected water flow; then it enters the inner diffuser hood 6 through the ventilation slot 61, merges with the high-pressure airflow and is ejected to form a spray.

[0072] Embodiment three:

[0073] Based on the above embodiment 1, Figures 1 to 3 As shown, the fan assembly 1 is fixedly connected to the outer wind tube 2 through the flange 12, and the fan assembly 1 provides high-pressure airflow to the air ducts in the outer wind tube 2 and the inner wind tube 3. A front hinge seat 11 is fixed under the fan assembly 1, and a rear hinge seat 27 is fixed under the outer wind tube 2. The front hinge seat 11 and the rear hinge seat 27 are installed on the sanitation vehicle.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An environmentally friendly dust removal fog cannon, characterized in that: include: A fan assembly (1) for providing high-pressure airflow; An outer air duct (2), the front end of the outer air duct (2) being fixedly connected to the air outlet of the fan assembly (1); An inner wind tube (3) is sleeved in the outer wind tube (2); the front end of the inner wind tube (3) is sealedly connected to the inner wall of the outer wind tube (2), and a gap is left between the outer wall of the rear end of the inner wind tube (3) and the inner wall of the rear end of the outer wind tube (2); A water-dividing vibration damper (4) installed in the gap; The water-dividing vibration damper (4) comprises a flexible ring (41) which is sleeved and fixed on the outer wall of the inner wind tube (3); the outer wall of the flexible ring (41) is in contact with the inner wall of the outer wind tube (2); a plurality of water grooves are formed on the outer wall of the flexible ring (41); and uniformly distributed high-pressure flow channels (400) are formed between the water grooves on the outer wall of the flexible ring (41) and the inner wall of the outer wind tube (2); The water-dividing vibration damper (4) further comprises a water supply component (42) for supplying a high-pressure water flow to the water tank of the flexible ring (41); the water flow provided by the water supply component (42) passes through the high-pressure flow channel (400) and is sprayed toward the intersection of the rear end of the inner wind tube (3) and the rear end of the outer wind tube (2); The outer wall of the flexible ring (41) is provided with an annular groove (412); each group of the water grooves comprises a long water groove (413) and two short water grooves (414) which are provided along the axial direction of the flexible ring (41), the two short water grooves (414) being arranged on both sides of the long water groove (413), and the middle parts of the long water groove (413) and the short water groove (414) are both connected to the annular groove (412); One end of the long water groove (413) penetrates through the rear end of the flexible ring (41), and the high-pressure flow channel (400) is formed between the long water groove (413) and the inner wall of the outer wind tube (2); A plurality of evenly distributed radial holes (415) are provided at the bottom of the annular groove (412); an axial hole (416) corresponding to and connected to the radial holes (415) is provided on the front end surface of the annular groove (412); the axial hole (416) is connected to the water supply component (42); The water supply component (42) comprises: A T-shaped sleeve (421) is sleeved and fixed on the inner wind cylinder (3); the flexible ring (41) is sleeved and fixed on the T-shaped sleeve (421); An annular water storage tank (422) fixed on the edge of the end of the T-shaped sleeve (421); A plurality of evenly distributed water outlet joints (423) are all in communication with the annular water storage tank (422); the water outlet joints (423) are used to provide a high-pressure water flow to the water tank of the flexible ring (41); A water inlet joint (424) connected to the annular water storage tank (422); A pipe joint (425) is inserted through the side wall of the outer wind tube (2) and is connected to the water inlet joint (424).

2. The environmentally friendly dust removal fog cannon according to claim 1, characterized in that: A groove is provided on the outer wall of the front end of the flexible ring (41), and a sealing ring (411) is installed in the groove.

3. The environmentally friendly dust removal fog cannon according to claim 1, characterized in that: The outer air duct (2) is provided with a through hole for the pipe joint (425) to pass through, and a sealing sleeve (426) is sleeved between the pipe joint (425) and the through hole of the outer air duct (2).

4. The environmentally friendly dust removal fog cannon according to claim 1, characterized in that: The rear end of the outer wind cylinder (2) is fixedly connected to an outer wind collecting hood (5), and a premixing chamber (51) is formed between the rear end of the flexible ring (41) and the outer wind collecting hood (5); A circle of evenly distributed air inlet holes (21) communicating with the premixing chamber (51) is provided on the circumferential surface at the rear end of the outer air cylinder (2), and a filter screen (22) covering the air inlet holes (21) is mounted on the rear end of the outer air cylinder (2).

5. The environmentally friendly dust removal fog cannon according to claim 4, characterized in that: The rear end of the inner air cylinder (3) is fixedly connected to an inner air diffuser cover (6), and the inner air diffuser cover (6) positions the flexible ring (41) on the inner air cylinder (3); the inner air diffuser cover (6) is provided with a circle of evenly distributed ventilation slots (61) in communication with the premixing chamber (51); The inner wall of the outer air collecting cover (5) has an arc-shaped air guiding surface (52) for guiding air toward the ventilation slot (61).

6. The environmentally friendly dust removal fog cannon according to claim 1, characterized in that: The inner wall of the outer air cylinder (2) has a step (23) opposite to the front end of the inner air cylinder (3), and an elastic gasket (24) is provided between the step (23) and the front end of the inner air cylinder (3); A circle of positioning grooves (31) is provided on the circumferential surface at the front end of the inner air cylinder (3), and the front side wall of the positioning grooves (31) is a conical surface; A plurality of evenly distributed positioning holes (25) opposite to the positioning groove (31) are formed on the circumferential surface of the outer air cylinder (2); a positioning block (26) is inserted into the positioning hole (25); the positioning block (26) is fixedly connected to the outer air cylinder (2), and the inner end of the positioning block (26) is inserted into the positioning groove (31) and fits with the conical surface on the positioning groove (31).

7. The environmentally friendly dust removal fog cannon according to claim 1, characterized in that: The fan assembly (1) and the outer wind tube (2) are fixedly connected as a whole via a flange (12); a front hinge seat (11) is fixed under the fan assembly (1); and a rear hinge seat (27) is fixed under the outer wind tube (2).

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