External mixing type nozzle

Abstract

The utility model relates to an external mixing type nozzle, and belongs to the technical field of nozzles. Comprising a nozzle body, a lock cap in threaded connection to the outer surface of the nozzle body, an air cap abutting against the interior of the lock cap, a mounting plate slidably connected to the interior of the right side of the nozzle body, a filter screen fixed to the inner wall of the mounting plate, and two connecting plates fixed to the left side of the mounting plate. The first elastic block is fixed on the connecting plate; and the two second elastic blocks are fixed in the nozzle main body. Compared with an internal mixing denitration spray gun, the external mixing type spray gun is larger in flow controllable range and higher in spraying stability, under the condition that water flow is not changed, the higher the pressure of a gas path hole is, the better the atomization granularity is, the atomization angle is in a fan-shaped mist shape, the mist shape depends on the opening angle of a gas outlet hole, and the gas-water mixing position is located outside a spray nozzle opening; the external mixing nozzle is small in abrasion loss, long in service life, free of influence of air pressure and water pressure and suitable for users with sufficient on-site air consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzles, in particular to an external mixing nozzle. Background Technique

[0002] The evaporation cooler of the converter dry dedusting is a key component in the converter gas dry dedusting system. Its main functions are to cool, dedust and denitrate the converter gas. The fluid sprayed by the spray gun needs to mix two media. Currently, there are two mixing methods. One is to mix water and gas outside the nozzle, and the other is to mix inside the nozzle.

[0003] For example, a low-pressure internal mixing air atomizing nozzle disclosed in Chinese Patent (CN206924919U) includes an atomizing cap, a nozzle body, a liquid nozzle core and an air guiding core. The atomizing cap has a target core, an atomizing chamber and a nozzle flow channel. The nozzle body has an air inlet hole and a gas storage chamber. The liquid nozzle core is tightly fitted on the central axis of the nozzle body. The liquid nozzle core has a liquid channel, and a liquid guiding core is arranged inside the liquid channel, and a straight body small end is designed at the end. The air guiding core is connected to the nozzle body and the atomizing cap. The air guiding core has an air guiding chamber and a mixing chamber. The air inlet hole, the gas storage chamber, the air guiding chamber, the mixing chamber, the atomizing chamber and the nozzle flow channel are connected in sequence, and the mixing chamber is connected to the liquid channel. The inner diameter of the end of the mixing chamber facing the atomizing chamber is larger than the outer diameter of the target core. The low-pressure internal mixing air atomizing nozzle can reduce the gas consumption, improve the atomizing efficiency, improve the fineness and concentration of atomizing particles, and achieve the purpose of energy conservation and environmental protection.

[0004] The above solution still has the following technical deficiencies. The mixing of the two media in the above solution is completed inside the spray gun, the controllability of the media is relatively small, the controllable range of the spray gun flow rate is small, and the spray stability is low. Based on this, an external mixing nozzle is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an external mixing nozzle, which has the advantages of increasing the controllable range of the spray gun flow rate and making the spray stability higher, and solves the problems of small controllable range of the spray gun flow rate and low spray stability.

[0006] To achieve the above object, the utility model provides the following technical solution: An external mixing nozzle includes a nozzle body, a lock nut threadedly connected to the outer surface of the nozzle body, an air cap abutted inside the lock nut, a mounting plate slidably connected to the inside of the right side of the nozzle body, a filter screen fixed to the inner wall of the mounting plate, two connecting plates fixed to the left side of the mounting plate, a first elastic block fixed to the connecting plate, and two second elastic blocks fixed to the inside of the nozzle body;

[0007] The nozzle body includes a housing, a first external thread provided in the middle of the outer surface of the housing, a second external thread provided in the right part of the outer surface of the housing, two upper and lower air passage holes provided inside the housing, a water passage hole provided in the middle inside the housing, and a water outlet hole provided on the left side inside the housing.

[0008] By adopting this technical solution, the gas and water can be ejected separately.

[0009] Furthermore, the air cap includes a housing, a fixing plate fixed on the inner wall of the housing, an air outlet hole provided inside the housing, and a flanging fixed on the outer surface of the housing.

[0010] By adopting this technical solution, the opening angle of the air outlet hole can be used to control the atomization angle of the gas.

[0011] Furthermore, the lock nut includes a lock nut body, an internal thread provided on the inner wall of the lock nut body, and an abutting plate provided on the left side inside the lock nut body.

[0012] By adopting this technical solution, the air cap can be fixed on the nozzle body.

[0013] Furthermore, a placement groove is provided inside the right side of the housing, and the mounting plate abuts in the placement groove.

[0014] By adopting this technical solution, it is convenient to remove the mounting plate and the filter screen for cleaning.

[0015] Furthermore, two upper and lower mounting grooves are provided on the left side of the placement groove, and the connecting plate is located in the mounting grooves.

[0016] By adopting this technical solution, it is convenient to install the connecting plate.

[0017] Furthermore, the opposite sides of the two second elastic blocks are fixed to the corresponding sides of the mounting grooves, and the first elastic block can abut against the corresponding second elastic block.

[0018] By adopting this technical solution, it is convenient to fix the filter screen.

[0019] Furthermore, the water passage hole is communicated with the water outlet hole, a through hole is provided inside the fixing plate, and the left end of the housing is located inside the through hole.

[0020] By adopting this technical solution, it is convenient to limit the position of the housing.

[0021] Furthermore, the first external thread is threadedly connected with the internal thread, and the inner wall of the abutting plate abuts against the outer surface of the flanging.

[0022] By adopting this technical solution, it is convenient to fix the lock nut on the nozzle body.

[0023] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0024] For this external mixing nozzle, compared with the internal mixing denitration spray gun, the external mixing spray gun has a larger controllable flow range and higher spray stability. When the water flow remains unchanged, the higher the pressure of the air passage hole, the better the atomization particle size. The spray atomization angle is in a fan-shaped mist shape, and the mist shape depends on the opening angle of the air outlet hole. The air-water mixing position is outside the nozzle orifice, reducing the wear amount of the nozzle and having a longer service life. Moreover, this external mixing nozzle is not affected by air pressure and water pressure and is suitable for users with sufficient on-site gas consumption. Brief Description of the Drawings

[0025] Figure 1 is a structural schematic diagram of the present utility model;

[0026] Figure 2 of the present utility model Figure 1 is an enlarged structural schematic diagram of part A in the present utility model;

[0027] Figure 3 is an external structural schematic diagram of the present utility model;

[0028] Figure 4 is a structural schematic diagram of the lock cap of the present utility model;

[0029] Figure 5 is a structural schematic diagram of the nozzle body of the present utility model;

[0030] Figure 6 is a structural schematic diagram of the air cap of the present utility model.

[0031] In the figure: 100, nozzle body; 101, housing; 102, first external thread; 103, second external thread; 104, air passage hole; 105, water passage hole; 106, water outlet hole; 200, lock cap; 201, lock cap body; 202, internal thread; 203, abutting plate; 300, air cap; 301, outer shell; 302, fixing plate; 303, air outlet hole; 304, flanging; 4, mounting plate; 5, filter screen; 6, connecting plate; 7, first elastic block; 8, second elastic block. Detailed Description of the Embodiment

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figures 1 to 6, an external mixing nozzle in this embodiment includes a nozzle body 100, a lock nut 200 threadedly connected to the outer surface of the nozzle body 100, an air cap 300 abutted inside the lock nut 200, a mounting plate 4 slidably connected to the inside of the right side of the nozzle body 100, a filter screen 5 fixed to the inner wall of the mounting plate 4, two connecting plates 6 fixed to the left side of the mounting plate 4, a first elastic block 7 fixed to the connecting plate 6, and two second elastic blocks 8 fixed to the inside of the nozzle body 100.

[0034] The lock nut 200 in this embodiment includes a lock nut body 201, an internal thread 202 provided on the inner wall of the lock nut body 201, and an abutting plate 203 provided on the left side inside the lock nut body 201. A placement groove is provided inside the right side of the housing 101, and the mounting plate 4 abuts in the placement groove. Two upper and lower mounting grooves are provided on the left side of the placement groove, and the connecting plates 6 are located in the mounting grooves. The opposite sides of the two second elastic blocks 8 are fixed to the corresponding sides of the mounting grooves, and the first elastic block 7 can abut against the corresponding second elastic block 8.

[0035] It should be noted that the air cap 300 is used to spray gas and water separately, the filter screen 5 is used to filter water, and the first elastic block 7 and the second elastic block 8 fix the mounting plate 4 and the filter screen 5 through abutment.

[0036] Please refer to Figure 1 , Figure 4 and Figure 5 , in order to facilitate the separate transportation of gas and water, the nozzle body 100 in this embodiment includes a housing 101, a first external thread 102 provided in the middle of the outer surface of the housing 101, a second external thread 103 provided in the right part of the outer surface of the housing 101, two upper and lower gas passage holes 104 provided inside the housing 101, a water passage hole 105 provided in the middle inside the housing 101, and a water outlet hole 106 provided on the left side inside the housing 101. The water passage hole 105 is communicated with the water outlet hole 106, and the first external thread 102 is threadedly connected to the internal thread 202.

[0037] For the nozzle body 100 in this embodiment, the lock nut 200 can be conveniently disassembled through the threaded connection of the first external thread 102 and the internal thread 202, and the water outlet hole 106 is used to spray water.

[0038] It should be noted that the second external thread 103 is used to threadedly connect the nozzle body 100 to the spray gun.

[0039] Please refer to Figure 1 , Figure 4 and Figure 6, for the convenience of atomizing the gas and making it spray at a certain angle, the air cap 300 in this embodiment includes a housing 301, a fixing plate 302 fixed on the inner wall of the housing 301, an air outlet hole 303 opened inside the housing 301, and a flange 304 fixed on the outer surface of the housing 301. A through hole is opened inside the fixing plate 302. The left end of the housing 101 is located inside the through hole, and the inner wall of the abutting plate 203 abuts against the outer surface of the flange 304.

[0040] The flange 304 in this embodiment is used to facilitate the abutting plate 203 to abut against it, so that the air cap 300 can be fixed on the nozzle body 100. The air outlet hole 303 is used to make the gas spray at a certain angle, so as to facilitate the mixing of the gas and water.

[0041] The working principle of the above embodiment is as follows:

[0042] Inject saturated steam with a certain pressure into the gas path hole 104, and at the same time inject water with a certain pressure into the water path hole 105. The gas enters the air outlet hole 303 through the gas path hole 104, and the air outlet hole 303 sprays the gas at a certain angle. At the same time, the water enters the water outlet hole 106 through the water path hole 105. Finally, the water sprays out from the water outlet hole 106, and the water and steam are mixed outside the nozzle body 100 to produce a uniform conical spray effect. When the air cap 300 needs to be disassembled, rotate the lock cap 200, and the first external thread 102 and the internal thread 202 are separated from each other. Then the lock cap 200 is removed from the nozzle body 100. At this time, the abutting plate 203 and the flange 304 are separated from each other, and then the air cap 300 is removed from the nozzle body 100. When the filter screen 5 needs to be cleaned, pull the mounting plate 4 to the right. The mounting plate 4 drives the connecting plate 6 to move. The connecting plate 6 drives the first elastic block 7 to squeeze the second elastic block 8. After that, the first elastic block 7 and the second elastic block 8 are separated from each other, and the filter screen 5 is removed for cleaning.

Claims

1. An external mixing nozzle, comprising a nozzle body (100), a lock nut (200) threadedly connected to the outer surface of the nozzle body (100), an air cap (300) abutted inside the lock nut (200), a mounting plate (4) slidably connected to the inside of the right side of the nozzle body (100), a filter screen (5) fixed to the inner wall of the mounting plate (4), two connecting plates (6) fixed to the left side of the mounting plate (4), a first elastic block (7) fixed to the connecting plate (6), and two second elastic blocks (8) fixed to the inside of the nozzle body (100); The nozzle body (100) includes a housing (101), a first external thread (102) opened in the middle of the outer surface of the housing (101), a second external thread (103) opened in the right part of the outer surface of the housing (101), two upper and lower air passage holes (104) opened in the inside of the housing (101), a water passage hole (105) opened in the middle of the inside of the housing (101), and a water outlet hole (106) opened in the left side of the inside of the housing (101).

2. The external mixing nozzle according to claim 1, characterized in that: The air cap (300) includes a housing (301), a fixing plate (302) fixed to the inner wall of the housing (301), an air outlet hole (303) opened in the inside of the housing (301), and a flanging (304) fixed to the outer surface of the housing (301).

3. The external mixing nozzle according to claim 2, characterized in that: The lock nut (200) includes a lock nut body (201), an internal thread (202) opened in the inner wall of the lock nut body (201), and an abutting plate (203) arranged on the left side inside the lock nut body (201).

4. The external mixing nozzle according to claim 1, wherein: A placement groove is opened in the inside of the right side of the housing (101), and the mounting plate (4) abuts in the placement groove.

5. The external mixing nozzle according to claim 4, wherein: Two mounting grooves are opened in the left side of the placement groove, and the connecting plates (6) are located in the mounting grooves.

6. The external mixing nozzle according to claim 5, wherein: One side of the two second elastic blocks (8) facing away from each other is fixed to the side corresponding to the mounting groove, and the first elastic block (7) can abut against the corresponding second elastic block (8).

7. The external mixing nozzle according to claim 2, characterized in that: The water passage hole (105) is communicated with the water outlet hole (106), a through hole is opened in the inside of the fixing plate (302), and the left end of the housing (101) is located in the through hole.

8. The external mixing nozzle according to claim 3, characterized in that: The first external thread (102) is threadedly connected to the internal thread (202), and the inner wall of the abutting plate (203) abuts against the outer surface of the flanging (304).

Images