An adjustable high-efficiency mist wall dust suppression nozzle

Abstract

The present invention discloses an adjustable high-efficiency fog wall dust suppression nozzle, comprising: a nozzle housing, a venturi inner tube arranged in the nozzle housing, a retaining tube connected to the installation end of the nozzle housing, a nozzle head connected to the outlet end of the nozzle housing, and a threaded adjustment ring arranged at the end of the nozzle head; the retaining tube air inlet, the venturi inner tube and the inner cavity of the nozzle head are axially connected in sequence, and the inner cavity of the nozzle head can be connected to the outside through the cooperation of the first fan-shaped spray seam or radial spray hole of the nozzle head and the second radial fan-shaped spray seam of the threaded adjustment ring; the inner cavity of the inlet end of the venturi inner tube is a swirl chamber, and the inner cavity of the outlet end of the venturi inner tube is a gas-liquid mixing chamber; the annular gap 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 water inlet of the nozzle housing. The present invention is an adjustable nozzle with a cyclone and multi-stage atomization, which can change the range, shape and distance of atomization spraying.

Description

Technical Field

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

[0002] With the development of society, whether in industry, agriculture or daily life, the application of sprinklers can be seen everywhere, such as engine fuel injectors, pesticide spraying, garden irrigation, surface cleaning and painting, coal mining and road construction dust suppression. Especially for road construction dust suppression, because in recent years, the national environmental protection standards have become more and more stringent, which has a great impact on construction projects that generate dust pollution. How to better make the atomized particles of the sprinkler closer to the dust particles and how to make the sprinkler spray longer and wider is particularly important for suppressing construction dust.

[0003] Conventional nozzles usually increase the spray distance and spray area by increasing pressure and flow rate. Such nozzles not only consume a lot of energy, but also have poor effects on long and large outdoor construction areas. Sometimes, in order to meet the requirements of different construction conditions, multiple nozzles need to be arranged, which brings great inconvenience to the arrangement of dust suppression spray systems. Summary of the invention

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

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

[0006] An adjustable high-efficiency mist wall dust suppression nozzle comprises: a nozzle housing, a venturi inner tube arranged in the nozzle housing, a retaining tube connected to the installation end of the nozzle housing, a nozzle head connected to the outlet end of the nozzle housing, and a threaded adjustment ring arranged at the end of the nozzle head;

[0007] The inner channel of the retaining tube is an air inlet; a water inlet of the nozzle housing is provided on the outer wall of the nozzle housing; a plurality of first radial fan-shaped spray slots and a plurality of radial spray holes are provided on the side wall of the nozzle head evenly distributed along the circumferential direction; a plurality of second radial fan-shaped spray slots that can correspond one to one with the first radial fan-shaped spray slots are provided on the side wall of the threaded adjustment ring;

[0008] The air inlet, the venturi inner tube and the inner cavity of the nozzle head are axially connected in sequence, and the inner cavity of the nozzle head can be connected to the outside through the cooperation of the first radial fan-shaped spray slot or the radial spray hole and the second radial fan-shaped spray slot;

[0009] The two ends of the venturi inner tube are respectively sealed and connected to the inner wall of the nozzle shell. The inner cavity of the inlet end of the venturi inner tube is a swirl cavity, and the inner cavity of the outlet end of the venturi inner tube is a gas-liquid mixing cavity; the annular space between the outer wall of the middle part of the venturi inner tube and the inner wall of the nozzle shell is a water inlet cavity; the side wall of the venturi inner tube is provided with a venturi water inlet opposite to the water inlet of the nozzle shell to connect the water inlet cavity and the inner cavity of the middle part of the venturi inner tube.

[0010] The present invention also includes the following technical features:

[0011] Specifically, the retaining tube is axially arranged in sequence: a retaining tube air inlet end and a retaining tube mounting end, the inner wall of the retaining tube air inlet end is provided with a retaining tube internal thread to connect the air pipe; the outer wall of the retaining tube mounting end is provided with a retaining tube external thread, the outer wall of the retaining tube mounting end is also provided with a retaining tube annular step surface, and the inner wall of the retaining tube mounting end is provided with an annular retaining tube limit platform.

[0012] Specifically, the nozzle housing has the following axial structures in order: an internal thread at the nozzle housing mounting end, a first annular stopper, a first inner wall, a second annular stopper, a second inner wall, a third annular stopper, a third inner wall, a fourth annular stopper and an internal thread at the nozzle housing outlet end; the nozzle housing water inlet is arranged on the first inner wall;

[0013] The internal thread of the installation end of the nozzle housing cooperates with the external thread of the retaining tube, and the annular step surface of the retaining tube rests on the first annular limiting platform.

[0014] Specifically, the nozzle head is coaxial in sequence along the axial direction: a cylindrical first end of the nozzle head, an annular nozzle head body and a cylindrical second end of the nozzle head; the outer diameter of the nozzle head body is larger than the outer diameter of the first end of the nozzle head and the outer diameter of the second end of the nozzle head, the end face of the nozzle head body adjacent to the first end of the nozzle head is the first end face of the nozzle head body, and the end face of the nozzle head body adjacent to the second end of the nozzle head is the second end face of the nozzle head body;

[0015] The outer wall of the first end of the nozzle head is provided with a first external thread of the nozzle head to be installed in cooperation with the internal thread of the outlet end of the nozzle housing, and the end surface of the first end of the nozzle head is supported on the fourth annular limiting platform;

[0016] The side wall of the nozzle head body is provided with the first radial fan-shaped spray slot, and one radial spray hole is provided between two adjacent first radial fan-shaped spray slots, and the plurality of radial spray holes are evenly distributed along the circumferential direction of the outer wall of the nozzle head body; the inner cavity of the first end of the nozzle head and the inner cavity of the nozzle head body constitute the inner cavity of the nozzle head;

[0017] The outer wall of the second end portion of the nozzle head is provided with a second external thread of the nozzle head.

[0018] Specifically, the inner side of the threaded adjustment ring is composed of: a cylindrical inner wall, an annular table surface and an inner thread of the threaded adjustment ring in the axial direction;

[0019] The second radial fan-shaped spray slot is arranged on the inner wall of the cylinder, the annular table top is placed on the second end surface of the nozzle head body, and the inner thread of the thread adjustment ring is matched with the second outer thread of the nozzle head.

[0020] Specifically, the venturi inner tube includes, in order along the axial direction: the cylindrical swirl chamber, the conical constricted pressure chamber, the cylindrical inlet section, the conical constricted contraction section, the straight tube throat, the conical expanded diffusion section and the cylindrical gas-liquid mixing chamber;

[0021] The outer wall of the swirl chamber is in close contact with the first inner wall; the Venturi water inlet is arranged on the throat; the outer wall of the gas-liquid mixing chamber is in close contact with the second inner wall; the outlet end face of the Venturi inner tube is against the third annular limit platform.

[0022] Specifically, a baffle ring and a cyclone are provided in the cyclone chamber;

[0023] The retaining ring comprises an annular retaining ring body coaxially attached to the inner wall of the swirl chamber and a mounting column coaxial with the retaining ring and fixed at the center of the retaining ring by a plurality of radially arranged fixing rods, wherein the mounting column is sequentially divided into a mounting column mounting section and a mounting column positioning section along the airflow direction, and the diameter of the mounting column mounting section is smaller than the diameter of the mounting column positioning section;

[0024] The cyclone comprises a collar which can be sleeved on the mounting section of the mounting column and a plurality of swirl blades arranged on the outer wall of the collar, wherein the swirl blades are evenly distributed along the circumference of the outer wall of the collar, and the diameter of the circle where the plurality of swirl blades are located is larger than the inner diameter of the stop tube limit platform so as to limit the cyclone axially through the stop tube limit platform; the inner diameter of the collar is smaller than the diameter of the positioning section of the mounting column so as to be able to position the cyclone axially.

[0025] Specifically, an annular groove is provided on the outer wall of the swirl chamber, and a sealing ring is provided in the annular groove.

[0026] Specifically, an annular gasket is provided between the outlet end surface of the nozzle housing and the nozzle head.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] The present invention is an adjustable nozzle with multi-stage atomization and a cyclone, which can change the range, shape and distance of the atomization spraying. It does not need to increase the number of nozzles to meet the dust suppression needs under different working conditions, and has a good energy-saving effect. It has strong adaptability for controlling dust in different processes in outdoor long and large construction areas.

[0029] In the present invention, the gas passes through the swirl chamber (i.e., swirler, baffle ring), the tapered boost chamber of the Venturi inner tube, the cylindrical inlet section, the tapered contraction section, the straight tube throat, i.e., the narrowest pipe chamber of the Venturi structure, from the air inlet in sequence, and collides and mixes with the liquid flowing into the inner cavity of the nozzle shell from the water inlet and passing through the Venturi water inlet; then the mixed atomized droplets move forward along the inner tube into the gas-liquid mixing chamber, and finally, after the liquid is fully mixed in the inner cavity of the nozzle head, it flows into the first radial fan-shaped spray gap and radial spray hole of the nozzle head, and is sprayed out from the first radial fan-shaped spray gap or the radial spray hole through the second radial fan-shaped spray gap of the threaded adjustment ring matched therewith, forming a spray wall perpendicular to the axial direction of the nozzle head to capture the suspended or drifting dust particles.

[0030] The axial and radial distances between the first radial fan-shaped spray seam and the second radial fan-shaped spray seam of the present invention can be adjusted along with the precise threaded connection between the nozzle head and the threaded adjustment ring, thereby adjusting the opening widths of the radial and axial fan-shaped spray seams at the matching point. The threaded adjustment ring is adjusted to adjust the type and opening width of the nozzle at the matching point, which can cope with dust in different concentration ranges, airflow intensities and area ranges. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0033] Figure 3 It is a three-dimensional exploded view of the overall structure 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 A three-dimensional diagram of the nozzle head of the present invention;

[0038] Figure 8 It is a three-dimensional diagram of the pipe blocking of the present invention;

[0039] Fig. 9 A three-dimensional diagram of the cyclone of the present invention;

[0040] Fig.10 A three-dimensional diagram of the retaining ring of the present invention;

[0041] Fig.11 A radial sealing ring of the Venturi inner tube of the present invention;

[0042] Fig.12 It is the annular gasket at the nozzle head of the present invention.

[0043] The reference numerals in the figure are as follows: 1-nozzle housing, 2-Venturi inner tube, 3-blocking tube, 4-nozzle head, 5-threaded adjustment ring, 6-water inlet chamber, 7-annular gasket, 8-sealing ring;

[0044] 101-water inlet of the nozzle housing, 102-internal thread of the nozzle housing mounting end, 103-first annular limiting platform, 104-first inner wall, 105-second annular limiting platform, 106-second inner wall, 107-third annular limiting platform, 108-third inner wall, 109-fourth annular limiting platform, 110-internal thread of the nozzle housing outlet end;

[0045] 201-swirl chamber, 202-pressurization chamber, 203-inlet section, 204-contraction section, 205-throat, 206-diffusion section, 207-gas-liquid mixing chamber, 208-Venturi water inlet, 209-retaining ring, 210-cyclone, 211-retaining ring body, 212-fixing rod, 213-installing column, 214-sleeve ring, 215-swirl blade;

[0046] 401 - inner cavity of the nozzle head, 402 - first radial fan-shaped spray slot, 403 - radial spray hole, 404 - first end of the nozzle head, 405 - nozzle head body, 406 - second end of the nozzle head;

[0047] 501-Second radial fan-shaped spray slot. DETAILED DESCRIPTION

[0048] The present invention provides an adjustable high-efficiency mist wall dust suppression nozzle, comprising: a nozzle housing 1, a Venturi inner tube 2 arranged in the nozzle housing, a retaining tube 3 connected to the installation end of the nozzle housing 1, a nozzle head 4 connected to the outlet end of the nozzle housing 1, and a threaded adjustment ring 5 arranged at the end of the nozzle head 4; one end of the nozzle housing 1 is the installation end, and the other end is the outlet end.

[0049] The inner channel of the retaining tube 3 is an air inlet; a nozzle shell water inlet 101 is provided on the outer wall of the nozzle shell 1; a plurality of first radial fan-shaped spray slots 402 and a plurality of radial spray holes 403 are provided on the side wall of the nozzle head 4; a plurality of second radial fan-shaped spray slots 501 which can correspond one to one with the first radial fan-shaped spray slots 402 are provided on the side wall of the threaded adjustment ring 5; the axial and radial distances between the first radial fan-shaped spray slots 402 and the second radial fan-shaped spray slots 501 can be adjusted with the precision threaded connection between the nozzle head 4 and the threaded adjustment ring 5, so as to adjust the opening width of the radial and axial fan-shaped spray slots at the fitting part to cope with dust in different ranges of concentration and distance. Specifically, in the present embodiment, the shape and opening of the opening between the first radial fan-shaped spray slots 402 and the second radial fan-shaped spray slots 501 are adjusted with an adjustment cycle of 0-15 degrees.

[0050] The air inlet, the Venturi inner tube 2 and the nozzle head inner cavity 401 are axially connected in sequence, and the nozzle head inner cavity 401 can be connected to the outside through the first radial fan-shaped spray gap 402 or the radial spray hole 403 and the second radial fan-shaped spray gap 501.

[0051] The two ends of the venturi inner tube 2 are respectively sealed and connected to the inner wall of the nozzle shell 1, the inner cavity of the inlet end of the venturi inner tube 2 is a swirl chamber 201, and the inner cavity of the outlet end of the venturi inner tube 2 is a gas-liquid mixing chamber 207; the annular space between the outer wall of the middle part of the venturi inner tube 2 and the inner wall of the nozzle shell 1 is the water inlet chamber 6; the side wall of the venturi inner tube 2 is provided with a venturi water inlet 208 opposite to the water inlet 101 of the nozzle shell to connect the water inlet chamber 6 and the inner cavity of the middle part of the venturi inner tube 2.

[0052] The retaining tube 3 is composed of: a retaining tube air inlet end and a retaining tube installation end in the axial direction. The inner wall of the retaining tube air inlet end is provided with a retaining tube internal thread to connect the air pipe; the outer wall of the retaining tube installation end is provided with a retaining tube external thread, the outer wall of the retaining tube installation end is also provided with a retaining tube annular step surface, and the inner wall of the retaining tube installation end is provided with an annular retaining tube limit platform.

[0053] The inside of the nozzle housing 1 is axially arranged in order: an internal thread 102 at the nozzle housing mounting end, a first annular limit platform 103, a first inner wall 104, a second annular limit platform 105, a second inner wall 106, a third annular limit platform 107, a third inner wall 108, a fourth annular limit platform 109 and an internal thread 110 at the nozzle housing outlet end; the nozzle housing water inlet 101 is arranged on the first inner wall 104; the internal thread 102 at the nozzle housing mounting end cooperates with the external thread of the retaining pipe, and the annular step surface of the retaining pipe is pressed against the first annular limit platform 103.

[0054] The nozzle head 4 is coaxial in sequence along the axial direction: a cylindrical nozzle head first end 404, an annular nozzle head body 405 and a cylindrical nozzle head second end 406; the outer diameter of the nozzle head body 405 is larger than the outer diameter of the nozzle head first end 404 and the outer diameter of the nozzle head second end 406, the end face of the nozzle head body 405 adjacent to the nozzle head first end 404 is the nozzle head body first end face, and the end face of the nozzle head body 405 adjacent to the nozzle head second end 406 is the nozzle head body second end face; the outer wall of the first end of the nozzle head is provided with a nozzle head first external thread to connect with the nozzle head housing 1 outlet The inner thread of the end is installed in cooperation, and the end face of the first end of the nozzle head is on the fourth annular limit platform 109; the side wall of the nozzle head body 405 is provided with a first radial fan-shaped spray slot 402, and a radial spray hole 403 is provided between two adjacent first radial fan-shaped spray slots 402, and multiple radial spray holes 403 are evenly distributed along the circumference of the outer wall of the nozzle head body 405; the inner cavity of the first end of the nozzle head and the inner cavity of the nozzle head body constitute the nozzle head inner cavity 401; an annular gasket 7 is provided between the first end face of the nozzle head body and the end face of the outlet end of the nozzle housing 1; the outer wall of the second end of the nozzle head is provided with a second external thread of the nozzle head. More specifically, in this embodiment, there are six first fan-shaped spray slots 402, radial spray holes 403 and second radial fan-shaped spray slots 501, and the conversion of fan-shaped spray slots and cylindrical spray holes and the adjustment of different opening sizes of the same nozzle can be realized through the axial movement of the threaded adjustment ring, which can meet the spray requirements under different working conditions.

[0055] The inner axial direction of the threaded adjustment ring 5 is: a cylindrical inner wall, an annular table and an inner thread of the threaded adjustment ring; a second radial fan-shaped spray slot 501 is provided on the cylindrical inner wall, the annular table is pressed against the second end face of the nozzle head body, and the inner thread of the threaded adjustment ring cooperates with the second outer thread of the nozzle head.

[0056] The Venturi inner tube 2 includes, in sequence, along the axial direction: a cylindrical swirl chamber 201, a conical constricted boost chamber 202, a cylindrical inlet section 203, a conical constricted contraction section 204, a straight tube throat 205, a conical expanded diffusion section 206 and a cylindrical gas-liquid mixing chamber 207; the outer wall of the swirl chamber 201 is closely attached to the first inner wall 104; the Venturi water inlet 208 is arranged on the throat 205; the outer wall of the gas-liquid mixing chamber 207 is closely attached to the second inner wall 106; the outlet end face of the Venturi inner tube 2 is pressed against the third annular limit platform 107.

[0057] A baffle ring 209 and a swirler 210 are provided in the swirl chamber 201; the baffle ring 209 includes an annular baffle ring body 211 coaxially attached to the inner wall of the swirl chamber 201 and a mounting column 213 fixed at the center of the baffle ring 209 by a plurality of radially arranged fixing rods 212 and coaxial with the baffle ring 209, the mounting column 213 is composed of a mounting column mounting section and a mounting column positioning section in the air flow direction, and the diameter of the mounting column mounting section is smaller than the diameter of the mounting column positioning section; the swirler 210 includes a collar 214 that can be sleeved on the mounting column mounting section and a plurality of swirl blades 215 provided on the outer wall of the collar 214, the swirl blades 215 are uniformly distributed along the circumference of the outer wall of the collar 214, the diameter of the circle where the plurality of swirl blades 215 are located is larger than the inner diameter of the baffle tube limiting platform, so that the swirler 210 can be axially limited by the baffle tube limiting platform; the inner diameter of the collar 214 is smaller than the diameter of the mounting column positioning section, so that the swirler 210 can be axially positioned. The cyclone 210 can cause severe disturbance of the air, which is beneficial to the full mixing of gas and liquid; more specifically, in this embodiment, the swirl blades 215 are of a six-blade type, which can more fully disturb the swirl.

[0058] An annular groove is provided on the outer wall of the swirl chamber 201, and a sealing ring 8 is provided in the annular groove. The sealing ring is tightly attached to the first inner wall to seal the water inlet chamber.

[0059] An annular gasket 7 is provided between the outlet end face of the spray head housing 1 and the nozzle head 4. Specifically, an annular gasket is provided between the first end face of the nozzle head body and the outlet end face of the spray head housing.

[0060] In actual work, the gas passes through the swirl chamber (i.e., swirler, baffle ring), the tapered boost chamber 202 of the Venturi inner tube, the cylindrical inlet section 203, the tapered contraction section 204, the straight tube throat 205, i.e., the narrowest pipe chamber of the Venturi structure, from the air inlet in turn, and collides and mixes with the liquid flowing into the inner cavity of the nozzle shell from the water inlet and passing through the Venturi water inlet 208; then the mixed atomized droplets move forward along the inner tube into the gas-liquid mixing chamber 207, and finally, after the liquid is fully mixed in the inner cavity of the nozzle head, it flows into the first radial fan-shaped spray slot 402 of the nozzle head through the gas-liquid inlet of the nozzle head, or is ejected from the conventional radial spray hole 403 of the nozzle head through the second radial fan-shaped spray slot 501 of the threaded adjustment ring matched therewith, forming a spray wall perpendicular to the axis of the nozzle head to capture suspended or drifting dust particles. During this process, the threaded adjustment ring can be adjusted to adjust the type and opening width of the nozzle at the fitting to cope with dust in different concentrations, airflow intensities and area ranges.

[0061] The above only represents the preferred implementation examples of the present invention. Any structural deformation, modification and polishing made by anyone without departing from the principles of the present invention, such as increasing or decreasing the number and proportion of the fan-shaped spray slits and conventional circular holes of the nozzle, shall be deemed to be within the scope of protection of the present invention.

[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. In order 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. An adjustable high-efficiency mist wall dust suppression nozzle, characterized in that: It comprises: a nozzle housing (1), a Venturi inner tube (2) arranged in the nozzle housing, a retaining tube (3) connected to the installation end of the nozzle housing (1), a nozzle head (4) connected to the outlet end of the nozzle housing (1), and a threaded adjustment ring (5) arranged at the end of the nozzle head (4); The inner channel of the retaining tube (3) is an air inlet; a nozzle housing water inlet (101) is provided on the outer wall of the nozzle housing (1); a plurality of first radial fan-shaped spray slits (402) and a plurality of radial spray holes (403) uniformly distributed along the circumferential direction are provided on the side wall of the nozzle head (4); a plurality of second radial fan-shaped spray slits (501) that correspond one-to-one to the first radial fan-shaped spray slits (402) are provided on the side wall of the threaded adjustment ring (5); The air inlet, the Venturi inner tube (2) and the nozzle head inner cavity (401) are axially connected in sequence, and the nozzle head inner cavity (401) can be connected to the outside through the cooperation of the first radial fan-shaped spray slot (402) or the radial spray hole (403) and the second radial fan-shaped spray slot (501); The two ends of the venturi inner tube (2) are respectively sealedly connected to the inner wall of the nozzle shell (1); the inner cavity at the inlet end of the venturi inner tube (2) is a swirl chamber (201), and the inner cavity at the outlet end of the venturi inner tube (2) is a gas-liquid mixing chamber (207); the annular space between the outer wall of the middle part of the venturi inner tube (2) and the inner wall of the nozzle shell (1) is a water inlet chamber (6); the side wall of the venturi inner tube (2) is provided with a venturi water inlet (208) opposite to the water inlet (101) of the nozzle shell to connect the water inlet chamber (6) and the inner cavity of the middle part of the venturi inner tube (2); The retaining tube (3) is composed of: a retaining tube air inlet end and a retaining tube installation end in the axial direction, wherein the inner wall of the retaining tube air inlet end is provided with a retaining tube internal thread for connecting with the air pipe; the outer wall of the retaining tube installation end is provided with a retaining tube external thread, the outer wall of the retaining tube installation end is also provided with a retaining tube annular step surface, and the inner wall of the retaining tube installation end is provided with an annular retaining tube limiting platform; A retaining ring (209) and a cyclone (210) are provided in the cyclone chamber (201); The retaining ring (209) comprises an annular retaining ring body (211) coaxially attached to the inner wall of the swirl chamber (201), and a mounting column (213) fixed at the center of the retaining ring (209) by a plurality of radially arranged fixing rods (212) and coaxial with the retaining ring (209), wherein the mounting column (213) is composed of a mounting column mounting section and a mounting column positioning section in sequence along the airflow direction, and the diameter of the mounting column mounting section is smaller than the diameter of the mounting column positioning section; The cyclone (210) comprises a collar (214) that can be sleeved on the mounting section of the mounting column, and a plurality of swirl blades (215) arranged on the outer wall of the collar (214); the swirl blades (215) are evenly distributed along the circumference of the outer wall of the collar (214); the diameter of the circle where the plurality of swirl blades (215) are located is larger than the inner diameter of the stop tube limiting platform, so that the cyclone (210) can be axially limited by the stop tube limiting platform; the inner diameter of the collar (214) is smaller than the diameter of the mounting column positioning section, so that the cyclone (210) can be axially positioned; An annular groove is provided on the outer wall of the swirl chamber (201), and a sealing ring (8) is provided in the annular groove.

2. The adjustable high-efficiency mist wall dust suppression nozzle according to claim 1 is characterized in that: The nozzle housing (1) has the following components in the axial direction: an internal thread (102) at the nozzle housing mounting end, a first annular stopper (103), a first inner wall (104), a second annular stopper (105), a second inner wall (106), a third annular stopper (107), a third inner wall (108), a fourth annular stopper (109), and an internal thread (110) at the nozzle housing outlet end; the nozzle housing water inlet (101) is arranged on the first inner wall (104); The internal thread (102) of the nozzle housing installation end cooperates with the external thread of the retaining tube, and the annular step surface of the retaining tube rests on the first annular limiting platform (103).

3. The adjustable high-efficiency mist wall dust suppression nozzle according to claim 2 is characterized in that: The nozzle head (4) is coaxial in sequence along the axial direction: a cylindrical nozzle head first end (404), an annular nozzle head body (405) and a cylindrical nozzle head second end (406); the outer diameter of the nozzle head body (405) is larger than the outer diameter of the nozzle head first end (404) and the outer diameter of the nozzle head second end (406); the end face of the nozzle head body (405) adjacent to the nozzle head first end (404) is the nozzle head body first end face, and the end face of the nozzle head body (405) adjacent to the nozzle head second end (406) is the nozzle head body second end face; The outer wall of the first end of the nozzle head is provided with a first external thread of the nozzle head, so as to be mounted in cooperation with the internal thread of the outlet end of the nozzle housing (1), and the end surface of the first end of the nozzle head is pressed against the fourth annular limiting platform (109); The side wall of the nozzle head body (405) is provided with the first radial fan-shaped spray slit (402), and one radial spray hole (403) is provided between two adjacent first radial fan-shaped spray slits (402), and the plurality of radial spray holes (403) are evenly distributed along the circumferential direction of the outer wall of the nozzle head body (405); the inner cavity of the first end of the nozzle head and the inner cavity of the nozzle head body constitute the inner cavity of the nozzle head (401); The outer wall of the second end portion of the nozzle head is provided with a second external thread of the nozzle head.

4. The adjustable high-efficiency mist wall dust suppression nozzle according to claim 3 is characterized in that: The inner part of the thread adjustment ring (5) is composed of: a cylindrical inner wall, an annular table surface and an inner thread of the thread adjustment ring in the axial direction; The second radial fan-shaped spray slot (501) is provided on the cylindrical inner wall, the annular table top is placed on the second end surface of the nozzle head body, and the inner thread of the thread adjustment ring cooperates with the second outer thread of the nozzle head.

5. The adjustable high-efficiency mist wall dust suppression nozzle according to claim 4, characterized in that: The venturi inner tube (2) comprises, in order along the axial direction: the cylindrical swirl chamber (201), a conical constricted pressure chamber (202), a cylindrical inlet section (203), a conical constricted contraction section (204), a straight tube throat (205), a conical expanded diffusion section (206), and the cylindrical gas-liquid mixing chamber (207); The outer wall of the swirl chamber (201) is in close contact with the first inner wall (104); the Venturi water inlet (208) is arranged on the throat (205); the outer wall of the gas-liquid mixing chamber (207) is in close contact with the second inner wall (106); and the end surface of the outlet end of the Venturi inner tube (2) is pressed against the third annular limit platform (107).

6. The adjustable high-efficiency mist wall dust suppression nozzle according to claim 1, characterized in that: An annular gasket (7) is provided between the outlet end surface of the nozzle housing (1) and the nozzle head (4).

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