A high-efficiency and multifunctional dust suppression nozzle

Abstract

The present invention discloses a high-efficiency multifunctional dust suppression nozzle, comprising a nozzle housing, a Venturi inner tube installed in the nozzle housing, a threaded adjustment ring connected to the outlet end of the nozzle housing, and a sealing disk arranged at the end of the threaded adjustment ring. The gas enters the Venturi inner cavity from the air inlet through the first guide port, the boost chamber, and the second guide port in sequence, and is first collided and mixed with the liquid flowing in from the Venturi water inlet; the mixed atomized droplets enter the primary mixing chamber along the Venturi inner cavity and are mixed again with the liquid flowing in from the water inlet hole of the primary mixing chamber in the primary mixing chamber; the atomized droplets enter the secondary mixing chamber and are mixed again with the liquid flowing in from the water inlet hole of the secondary mixing chamber; finally, after the liquid is fully mixed in the secondary mixing chamber, it is sprayed out by the first radial fan-shaped spray slot and the second radial fan-shaped spray slot matched therewith, forming a spray wall to capture the dust particles passing through. The present invention can improve the atomization rate, atomize evenly, and has a better water-saving effect.

Description

Technical Field

[0001] The invention belongs to the field of mechanical equipment, and in particular relates to a high-efficiency and multifunctional dust suppression nozzle. Background Art

[0002] Nowadays, sprinklers are widely used in social life and industrial and agricultural development, such as pesticide spraying, fuel atomization, agricultural and forestry irrigation, and engineering construction dust suppression. Especially for engineering dust suppression, since dust particles are relatively small, they change greatly with the flow of air, so it is particularly important to make the atomization rate and atomization particle size of water or dust suppression mixed liquid closer to dust particles.

[0003] Ordinary nozzles generally suppress dust by increasing pressure and flow rate. Such nozzles not only consume a lot of energy and water, but also cannot meet the needs of different working conditions. Sometimes, in order to meet the dust suppression under different working conditions, several different nozzles are often required, which brings a lot of inconvenience to different types of construction. Summary of the invention

[0004] In view of the defects and shortcomings in the prior art, the present invention provides a high-efficiency and multifunctional dust suppression nozzle to overcome the above problems in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical scheme:

[0006] A high-efficiency multifunctional dust suppression nozzle comprises: a nozzle housing, a venturi inner tube installed in the nozzle housing, a threaded adjustment ring connected to the outlet end of the nozzle housing, and a detachable sealing disk arranged at the end of the threaded adjustment ring, which are coaxially arranged;

[0007] The inlet end of the nozzle housing is an air inlet, and the inner cavity of the outlet end is a secondary mixing cavity. The air inlet of the nozzle housing, the inner cavity of the venturi inner tube and the secondary mixing cavity are axially connected in sequence; a primary water inlet is provided on the outer wall of the nozzle housing, an axial nozzle hole is provided at the center of the outlet end, and a plurality of first radial fan-shaped spray slots are provided on the side wall of the outlet end;

[0008] The two ends of the Venturi inner tube are respectively sealed and connected to the inner wall of the nozzle housing, and the inner cavity of the outlet end of the Venturi inner tube is a primary mixing chamber; the annular space between the outer wall of the middle part of the Venturi inner tube and the inner wall of the nozzle housing is a water inlet chamber; the side wall of the Venturi inner tube is provided with a Venturi water inlet opposite to the primary water inlet to connect the water inlet chamber and the inner cavity of the middle part of the Venturi inner tube, and the side wall of the Venturi inner tube is also provided with a primary mixing chamber water inlet hole to connect the water inlet chamber and the primary mixing chamber; the water inlet chamber and the secondary mixing chamber are connected through the secondary mixing chamber water inlet hole;

[0009] The side wall of the threaded adjustment ring is provided with a plurality of second radial fan-shaped spray slots which can be opposite to the first radial fan-shaped spray slots one by one;

[0010] A blocking rod capable of blocking the axial nozzle hole is vertically arranged at the center of the sealing disk.

[0011] The present invention also includes the following technical features:

[0012] Specifically, the nozzle housing has the following components in the axial direction: the air inlet, the first inner wall, the first annular stopper, the second inner wall, the second annular stopper, the secondary mixing chamber and the axial nozzle hole;

[0013] The primary water inlet is arranged on the second inner wall, and the second annular limiting platform is provided with an axial water inlet hole of the secondary mixing chamber;

[0014] The nozzle housing corresponding to the secondary mixing chamber is the outlet end, and an annular mounting groove coaxial with the nozzle housing is provided on the outer wall of the outlet end.

[0015] Specifically, the venturi inner tube includes, in order along the axial direction: a conical first guide port, a cylindrical booster chamber, a conical second guide port, a venturi inner chamber, a cylindrical primary mixing chamber and a conical mounting end;

[0016] The outer wall of the boost chamber is in close contact with the first inner wall and is axially positioned by the first annular limit platform;

[0017] The wall surface of the Venturi inner cavity is provided with a radial Venturi water inlet;

[0018] The mounting end is mounted on the conical inner wall of the second annular limiting platform.

[0019] Specifically, the Venturi inner cavity includes a cylindrical inlet section, a conical contraction section, a straight tube throat and a conical expansion diffusion section in sequence along the axial direction; the Venturi water inlet is arranged on the throat.

[0020] Specifically, the threaded adjustment ring is a cylindrical structure, and a thread is provided on the outer wall of one end of the threaded adjustment ring so as to be connected with the annular installation groove and then installed at the outlet end of the nozzle housing.

[0021] Specifically, an axial nozzle hole sealing ring surrounding the blocking rod is provided at the center of the sealing disk.

[0022] Specifically, there are three first radial fan-shaped spray slots, and the three first radial fan-shaped spray slots are evenly distributed along the circumferential direction.

[0023] Specifically, an annular groove is provided on the outer wall of the boost chamber, and a sealing ring is provided in the annular groove, so as to realize the sealing installation between the outer wall of the boost chamber and the first inner wall.

[0024] Specifically, there are multiple Venturi water inlets, primary mixing chamber water inlet holes and secondary mixing chamber water inlet holes, and they are evenly distributed along the circumferential direction.

[0025] Specifically, an annular gasket is provided between the outer wall of the boost chamber 205 and the first annular limiting platform 108 .

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] The present invention is an adjustable nozzle with multiple atomization and mixing, which can improve the atomization rate and atomize evenly. It does not need to increase the number of nozzles to cope with the dust suppression needs under different working conditions, and has a better water-saving effect. It has strong adaptability to controlling dust in different occasions.

[0028] In the present invention, the gas enters the Venturi cavity from the air inlet through the first guide port, the boost chamber, and the second guide port in sequence, and is first collided and mixed with the liquid flowing in from the primary water inlet and through the Venturi water inlet; then the mixed atomized droplets move along the Venturi cavity into the primary mixing chamber, and are mixed again with the liquid flowing in from the water inlet hole of the primary mixing chamber in the primary mixing chamber; then, the atomized droplets enter the secondary mixing chamber and are mixed again with the liquid flowing in from the water inlet hole of the secondary mixing chamber; finally, after the liquid is fully mixed in the secondary mixing chamber, it is sprayed out from the first radial fan-shaped spray slot and then through the second radial fan-shaped spray slot matched therewith, forming a spray wall to capture the dust particles passing through.

[0029] The invention can adjust the threaded adjustment ring to adjust the opening widths of the radial and axial fan-shaped spray slots at the matching position of the first radial fan-shaped spray slot and the second radial fan-shaped spray slot, so as to cope with dust in different ranges of concentration and distance.

[0030] In the present invention, when axial spraying is required, the first radial fan-shaped spraying slot and the second radial fan-shaped spraying slot can be closed by adjusting the threaded adjustment ring, and the sealing disk on the axial nozzle hole can be opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a full cross-sectional view of the overall structure of the present invention;

[0032] Figure 2 It is a three-dimensional assembly diagram of the present invention;

[0033] Figure 3 It is a three-dimensional exploded diagram of the present invention;

[0034] Figure 4 A three-dimensional diagram of the nozzle housing of the present invention;

[0035] Figure 5 A three-dimensional diagram of the Venturi inner tube of the present invention;

[0036] Figure 6 A three-dimensional diagram of the threaded adjustment ring of the present invention;

[0037] Figure 7 This is a three-dimensional diagram of the sealing disk of the present invention.

[0038] The reference numerals in the figure are: 1-nozzle housing, 2-Venturi inner tube, 3-threaded adjustment ring, 4-sealing disk, 5-water inlet chamber;

[0039] 101-air inlet, 102-secondary mixing chamber, 103-primary water inlet, 104-axial nozzle hole, 105-first radial fan-shaped spray gap, 106-secondary mixing chamber water inlet hole, 107-first inner wall, 108-first annular limiting platform, 109-second inner wall, 110-second annular limiting platform, 111-annular mounting groove;

[0040] 201-first-stage mixing chamber, 202-Venturi water inlet, 203-first-stage mixing chamber water inlet hole, 204-first flow guide port, 205-boosting chamber, 206-second flow guide port, 207-Venturi inner chamber, 208-installation end, 209-annular groove;

[0041] 301- second radial fan-shaped spraying slot;

[0042] 401-Blocking rod. DETAILED DESCRIPTION

[0043] The present invention provides a high-efficiency multifunctional dust suppression nozzle, comprising: a coaxially arranged nozzle housing 1, a venturi inner tube 2 installed in the nozzle housing 1, a threaded adjustment ring 3 connected to the outlet end of the nozzle housing 1, and a detachable sealing disk 4 arranged at the end of the threaded adjustment ring 3.

[0044] Among them, the inlet end of the nozzle housing 1 is an air inlet 101, the inner cavity of the outlet end is a secondary mixing chamber 102, the air inlet 101 of the nozzle housing 1, the inner cavity of the Venturi inner tube 2 and the secondary mixing chamber 102 are axially connected in sequence; a primary water inlet 103 is provided on the outer wall of the nozzle housing 1, an axial nozzle hole 104 is provided at the center of the outlet end, and a plurality of first radial fan-shaped spray slots 105 are provided on the side wall of the outlet end. The two ends of the venturi inner tube 2 are respectively sealed and connected to the inner wall of the nozzle housing 1, and the inner cavity of the outlet end of the venturi inner tube 2 is a primary mixing chamber 201; the annular space between the middle outer wall of the venturi inner tube 2 and the inner wall of the nozzle housing 1 is a water inlet chamber 5; the side wall of the venturi inner tube 2 is provided with a venturi water inlet 202 opposite to the primary water inlet 103 to connect the water inlet chamber 5 and the middle inner cavity of the venturi inner tube 2, and the side wall of the venturi inner tube 2 is also provided with a primary mixing chamber water inlet hole 203 to connect the water inlet chamber 5 and the primary mixing chamber 201; the water inlet chamber 5 and the secondary mixing chamber 102 are connected through the secondary mixing chamber water inlet hole 106. The side wall of the threaded adjustment ring 3 is provided with a plurality of second radial fan-shaped spray slots 301 which can be opposite to the first radial fan-shaped spray slots 105 one by one. The axial and radial distances between the first radial fan-shaped spray slots 105 and the second radial fan-shaped spray slots 301 can be adjusted along with the threaded connection between the nozzle housing 1 and the threaded adjustment ring 3, thereby adjusting the opening widths of the radial and axial fan-shaped spray slots at the mating position to cope with dust of different concentrations and distances. A blocking rod 401 which can block the axial nozzle hole 104 is vertically provided at the center of the sealing disk 4.

[0045] In this embodiment, the nozzle housing 1 is axially arranged in sequence: an air inlet 101, a first inner wall 107, a first annular limit platform 108, a second inner wall 109, a second annular limit platform 110, a secondary mixing chamber 102 and an axial nozzle hole 104; the primary water inlet 103 is arranged on the second inner wall 109, and an axial secondary mixing chamber water inlet hole 106 is arranged on the second annular limit platform 110; the nozzle housing 1 corresponding to the secondary mixing chamber 102 is the outlet end, and the outer wall of the outlet end is provided with an annular mounting groove 111 coaxial with the nozzle housing 1.

[0046] In this embodiment, the venturi inner tube 2 includes, in sequence along the axial direction: a first conical conical guide port 204, a cylindrical boost chamber 205, a second conical conical guide port 206, a venturi inner cavity 207, a cylindrical primary mixing chamber 201 and a conical conical mounting end 208; the outer wall of the boost chamber 205 is tightly attached to the first inner wall 107 and is axially positioned by the first annular limit platform 108; a radial venturi water inlet 202 is provided on the wall surface of the venturi inner cavity 207; and the mounting end 208 is mounted on the conical inner wall of the second annular limit platform 110.

[0047] The Venturi inner cavity 207 includes a cylindrical inlet section, a conical contraction section, a straight tube throat and a conical expansion diffusion section in sequence along the axial direction; the Venturi water inlet 202 is arranged on the throat.

[0048] The threaded adjustment ring 3 is a cylindrical structure. The outer wall of one end of the threaded adjustment ring 3 is provided with a thread to connect with the annular mounting groove 111 and then be installed at the outlet end of the nozzle housing 1. The threaded connection between the threaded adjustment ring 3 and the nozzle housing 1 can also be used to adjust the opening width of the radial and axial fan-shaped spray gaps at the matching position, as well as the closing and opening of the opening.

[0049] An axial nozzle hole sealing ring is provided at the center of the sealing disk 4 and surrounds the blocking rod 401 , which can effectively seal the axial nozzle hole 104 when axial injection is not required.

[0050] There are three first radial fan-shaped spray slots 105 , and the three first radial fan-shaped spray slots 105 are evenly distributed along the circumferential direction. In other embodiments, the number of the first radial fan-shaped spray slots 105 can be set as needed.

[0051] An annular groove 209 is provided on the outer wall of the boost chamber 205 , and a sealing ring is provided in the annular groove so as to realize a sealed installation between the outer wall of the boost chamber 205 and the first inner wall 107 .

[0052] There are multiple Venturi water inlet 202, primary mixing chamber water inlet hole 203 and secondary mixing chamber water inlet hole 106, and they are evenly distributed along the circumferential direction.

[0053] An annular gasket is provided between the outer wall of the boost chamber 205 and the first annular limiting platform 108 .

[0054] Preferably, the opening and closing of the axial nozzle hole 104 of the nozzle housing 1 can be achieved through the precise thread adjustment of the sealing disk 4 to meet the opening and closing requirements under different working conditions.

[0055] Working principle of the present invention:

[0056] (1) The gas enters the Venturi cavity 207 from the gas inlet 101 through the first guide port 204, the booster cavity 205, and the second guide port 206 in sequence, and undergoes a first collision and mixing with the liquid flowing in from the primary water inlet 103 and through the Venturi water inlet 202;

[0057] (2) The mixed atomized droplets then move along the venturi inner cavity 207 into the primary mixing chamber 201 and are mixed again with the liquid flowing in from the water inlet hole 203 of the primary mixing chamber in the primary mixing chamber 201;

[0058] (3) Then, the atomized liquid droplets enter the secondary mixing chamber 102 and mix again with the liquid flowing in from the water inlet 106 of the secondary mixing chamber;

[0059] (4) Finally, after the liquid is fully mixed in the secondary mixing chamber 102, it is sprayed out from the first radial fan-shaped spray slot 105 through the second radial fan-shaped spray slot 301 matched therewith, forming a spray wall to capture the dust particles passing through;

[0060] (5) During this process, the threaded adjustment ring 3 can be adjusted to adjust the opening width of the radial and axial fan-shaped spray slots at the mating position to cope with dust of different concentrations and distances;

[0061] (6) In addition, when axial spraying is required, the first radial fan-shaped spray slot 105 and the second radial fan-shaped spray slot 301 can be closed by adjusting the threaded adjustment ring 3, and the sealing disk 4 on the axial nozzle hole 104 can be opened.

[0062] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0064] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A high-efficiency multifunctional dust suppression nozzle, characterized in that: It comprises: a nozzle housing (1), a venturi inner tube (2) installed in the nozzle housing (1), a threaded adjustment ring (3) connected to the outlet end of the nozzle housing (1), and a detachable sealing disk (4) arranged at the end of the threaded adjustment ring (3); The inlet end of the nozzle housing (1) is an air inlet (101), the inner cavity of the outlet end is a secondary mixing cavity (102), and the air inlet (101) of the nozzle housing (1), the inner cavity of the venturi inner tube (2), and the secondary mixing cavity (102) are axially connected in sequence; a primary water inlet (103) is provided on the outer wall of the nozzle housing (1), an axial nozzle hole (104) is provided at the center of the outlet end, and a plurality of first radial fan-shaped spray slots (105) are provided on the side wall of the outlet end; The two ends of the venturi inner tube (2) are respectively sealedly connected to the inner wall of the nozzle housing (1); the inner cavity of the outlet end of the venturi inner tube (2) is a primary mixing chamber (201); the annular space between the middle outer wall of the venturi inner tube (2) and the inner wall of the nozzle housing (1) is a water inlet chamber (5); the side wall of the venturi inner tube (2) is provided with a venturi water inlet (202) opposite to the primary water inlet (103) to connect the water inlet chamber (5) and the middle inner cavity of the venturi inner tube (2); the side wall of the venturi inner tube (2) is also provided with a primary mixing chamber water inlet hole (203) to connect the water inlet chamber (5) and the primary mixing chamber (201); the water inlet chamber (5) and the secondary mixing chamber (102) are connected via the secondary mixing chamber water inlet hole (106); The side wall of the threaded adjustment ring (3) is provided with a plurality of second radial fan-shaped spray slots (301) which are capable of being opposite to the first radial fan-shaped spray slots (105) one by one; A blocking rod (401) capable of blocking the axial nozzle hole (104) is vertically disposed at the center of the sealing disk (4); The nozzle housing (1) has, in order along the axial direction: the air inlet (101), a first inner wall (107), a first annular stopper (108), a second inner wall (109), a second annular stopper (110), the secondary mixing chamber (102), and an axial nozzle hole (104); The primary water inlet (103) is arranged on the second inner wall (109), and the second annular limiting platform (110) is provided with an axial secondary mixing chamber water inlet hole (106); The nozzle housing (1) corresponding to the secondary mixing chamber (102) is the outlet end, and an annular mounting groove (111) coaxial with the nozzle housing (1) is provided on the outer wall of the outlet end; The venturi inner tube (2) comprises, in order along the axial direction: a conical first guide port (204), a cylindrical pressure boosting chamber (205), a conical second guide port (206), a venturi inner chamber (207), a cylindrical primary mixing chamber (201), and a conical mounting end (208); The outer wall of the boost chamber (205) is tightly attached to the first inner wall (107) and is axially positioned by a first annular limiting platform (108); The wall surface of the Venturi inner cavity (207) is provided with a radial Venturi water inlet (202); The mounting end (208) is mounted on the conical inner wall of the second annular limiting platform (110); The threaded adjustment ring (3) is a cylindrical structure, and a thread is provided on the outer wall of one end of the threaded adjustment ring (3) so as to be connected with the annular installation groove (111) and then installed on the outlet end of the nozzle housing (1).

2. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: The Venturi inner cavity (207) comprises, in sequence along the axial direction, a cylindrical inlet section, a conical contraction section, a straight tube throat and a conical expansion diffusion section; the Venturi water inlet (202) is arranged on the throat.

3. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: An axial nozzle hole sealing ring surrounding the sealing rod (401) is provided at the center of the sealing disk (4).

4. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: There are three first radial fan-shaped spray slots (105), and the three first radial fan-shaped spray slots (105) are evenly distributed along the circumferential direction.

5. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: An annular groove (209) is provided on the outer wall of the boost chamber (205), and a sealing ring is provided in the annular groove.

6. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: The Venturi water inlet (202), the first-stage mixing chamber water inlet hole (203) and the second-stage mixing chamber water inlet hole (106) are all in plurality and are evenly distributed along the circumferential direction.

7. The high-efficiency multifunctional dust suppression nozzle according to claim 1, characterized in that: An annular gasket is provided between the outer wall of the boost chamber (205) and the first annular limiting platform (108).

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