CN209576252U - A kind of denitration spray gun - Google Patents
A kind of denitration spray gun Download PDFInfo
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- CN209576252U CN209576252U CN201920188923.2U CN201920188923U CN209576252U CN 209576252 U CN209576252 U CN 209576252U CN 201920188923 U CN201920188923 U CN 201920188923U CN 209576252 U CN209576252 U CN 209576252U
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Abstract
A kind of denitration spray gun, including gun body, the dedusting cap that is mounted on the second nozzle of gun body front end and is sleeved on outside second nozzle, the dedusting cap is equipped with cyclic annular air outlet, it is equipped with casing on the outside of the gun body and forms the cavity for compress wind flowing therebetween, the rear end side wall of casing is equipped with the third air inlet for entering cavity for compress wind；The ring-type air outlet is connected to by multiple gas passages circumferentially arranged on second nozzle with cavity, and front end is equipped with the guide face sprayed towards the inclined outer surface of second nozzle.The utility model avoids high-temperature flue gas direct baking gun body by adding casing outside gun body, thus reduce the deformation of gun body, bending degree, disassembly easy to repair；The compress wind entered when gun body does not work by third air inlet sprays after guide face is oriented to along the outer surface of second nozzle end, and the sundries being attached on second nozzle is blown off and avoids its accumulation, prevents spray nozzle clogging, extends the service life of spray gun.
Description
Technical field
The utility model belongs to exhaust-gas treatment field, and in particular to a kind of denitration spray gun.
Background technique
In cement plant, steam power plant and garbage burning factory etc. the largely industry of discharge exhaust gas, industrial waste gas is had to pass through
Denitration process, so that NO therein and NO2(the two abbreviation NOX) content be reached or fallen below the discharge standard of national regulation.Mesh
Before, SNCR (Selective Non-Catalytic Reduction) denitrating technique is generally used, denitration spray gun is in the technique
Key equipment.Denitration spray gun is that ammonia solution or urea liquid are atomized into 100 microns of fine droplets below, be uniformly sprayed on
In boiler smoke, with the NO in boiler exhaust gasXReduction reaction occurs for gas, nitrogen and water is generated, to reduce in boiler exhaust gas
NOXContent, complete denitrification process.
Existing denitration spray gun is under high-temperature baking operating condition for a long time and long term wear is easy to cause gun body deformation, bending,
So that not allowing quick detachable in replacement process, furthermore when spray gun does not work, sundries is easy to be deposited in the outer surface of nozzle, causes
Spray nozzle clogging shortens the service life of denitration spray gun.
Summary of the invention
The purpose of this utility model is to provide one kind will not deform long-time is under high-temperature baking operating condition, is curved
The denitration spray gun that bent and nozzle is not easy to plug.
The purpose of this utility model is realized by technical solution below:
A kind of denitration spray gun including gun body 1, is mounted on the second nozzle 14 of gun body front end and is sleeved on outside second nozzle
Dedusting cap 16, which is equipped with cyclic annular air outlet 17, casing 2 is equipped on the outside of the gun body 1 and is formed therebetween and is used
In the cavity 13 of compress wind flowing, the rear end side wall of casing 2 is equipped with the third air inlet 9 for entering cavity for compress wind；Institute
It states cyclic annular air outlet to be connected to by multiple gas passages 15 circumferentially arranged on second nozzle 14 with cavity 13, front end is equipped with
The guide face 161 for spraying compress wind along the outer surface of second nozzle end towards second nozzle inclination.
Further speaking, 1 rear end of gun body be equipped with gas-liquid mixed pipe 6, the second air inlet 8 on gun body side wall,
Eddy flow collision part 11 inside gun body；The gas-liquid mixed pipe 6 divides with inlet 3, the first air inlet 4 being located at outside gun body
It is not connected to, front end is located inside gun body and is equipped with first jet 7；The first jet 7 is located at the second air inlet 8 and collides with eddy flow
Between part 11；
11 rear end of eddy flow collision part is circumferentially arranged with multiple first through hole 111, its front end circumferentially arranged with multiple second
Through-hole 112；First is formed between the first jet and eddy flow collision part rear end mixes spin chamber 10, the eddy flow collision part 11
Second is formed between lateral wall and 1 inner wall of gun body and mix spin chamber 12, and the first mixing spin chamber 10 passes through first through hole 111 and the
Two mixing spin chambers 12 are connected to, and the second mixing spin chamber 12 is connected to by the second through-hole 112 with second nozzle 14.
Further speaking, the airintake direction of second air inlet 8 and 1 inner wall of gun body are tangent.
Further speaking, the axis of the first through hole 111, the angle that the axis of the second through-hole 112 is formed are obtuse angle.
The utility model proposes denitration spray gun have the advantages that
1, by adding casing outside gun body, avoid high-temperature flue gas direct baking gun body, thus reduce the deformation of gun body,
Bending degree, disassembly easy to repair；
2, it adds in the cyclic annular air outlet front end of dedusting cap towards the inclined guide face of second nozzle, leads to when gun body does not work
It crosses outer surface of the compress wind of third air inlet entrance after guide face is oriented to along second nozzle end to spray, second will be attached to
Sundries on nozzle, which is blown off, avoids its accumulation, prevents spray nozzle clogging, extends the service life of spray gun；
3, gun body rear end is equipped with gas-liquid mixed pipe, the second air inlet, the eddy flow being connected to inlet and the first air inlet and touches
Striker, gas-liquid spray after repeatedly mixing from second nozzle, and atomization uniformity, granularity increase, and the drop of ejection is more
Fine uniform.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the technology of the utility model
Means, and being implemented in accordance with the contents of the specification, and to allow the above and other purpose of the utility model, feature and excellent
Point can be more clearly understood, special below to lift preferred embodiment, and cooperate attached drawing, and detailed description are as follows:
Detailed description of the invention
Fig. 1 is a kind of diagrammatic cross-section of denitration spray gun of the utility model.
Fig. 2 is the enlarged diagram of dedusting cap in the utility model.
[main element symbol description]
1- gun body, 2- casing, 3- inlet, the first air inlet of 4-, the first mixing chamber of 5-, 6- gas-liquid mixed pipe, 7- first
Nozzle, the second air inlet of 8-, 9- third air inlet, the mixing of 10- first spin chamber, 11- eddy flow collision part, 111- first through hole,
The second through-hole of 112-, 12- second mix spin chamber, 13- cavity, 14- second nozzle, 15- gas passage, 16- dedusting cap, 161-
Guide face, 17- ring-type air outlet.
Specific embodiment
Further to illustrate that the utility model is to reach technical means and efficacy used by predetermined purpose, below in conjunction with
Attached drawing and preferred embodiments, to according to the utility model proposes a kind of denitration spray gun its specific embodiment, structure, feature and its
Effect, detailed description is as follows.
It is according to definition "front", "rear" with the flow direction of liquid and gas in denitration gun body in the description of the present embodiment.
Referring to Fig. 1, a kind of denitration spray gun, including gun body 1, the second nozzle 14 that is mounted on gun body front end, pass through screw thread
Dedusting cap 16 of the connector sleeve outside second nozzle 14,1 rear end of gun body are inserted with gas-liquid mixed pipe 6, gas-liquid mixed pipe 6
Front end is equipped with first jet 7.The gun body rear end is additionally provided with eddy flow collision part 11 in front of first jet, is located at the first spray
Second air inlet 8 at mouth rear.The gas-liquid mixed pipe 6 connects with inlet 3, the first air inlet 4 being located at outside gun body respectively
Lead to form the first mixing chamber 5 at the rear portion of gas-liquid mixed pipe.
The 1 rear end side wall of gun body is equipped with the second air inlet 8, axis and the 1 inner wall phase of gun body of second air inlet 8
It cuts, so that the gas entered from the second air inlet 8 is in eddy flow shape.Eddy flow collision part 11 is equipped with inside the gun body 1, it is described
11 rear end of eddy flow collision part is equipped with multiple circumferentially distributed first through hole 111, and 11 front end of eddy flow collision part is equipped with multiple
The angle that the axis of the second circumferentially distributed through-hole 112, the axis of the first through hole 111 and the second through-hole 112 is formed is
Obtuse angle；First is formed between 11 rear end of eddy flow collision part and first jet 7 mixes spin chamber 10, the eddy flow collision part 11
Second is formed between lateral wall and 1 inner wall of gun body and mixes spin chamber 12, and second mixing spin chamber 12 passes through first through hole 111
It is connected with the first mixing spin chamber 10, the second mixing spin chamber 12 is connected by the second through-hole 112 with second nozzle 14
It is logical.When denitration spray gun work, liquid enters from inlet 3, with the gas that enters from the first air inlet 4 in the first mixing chamber 5
Sprayed after preliminary mixing through first jet 7, with the gas that enters from the second air inlet 8 first mix spin chamber 10 carry out it is secondary
After eddy flow mixing, the gas-liquid mixture of formation flows into the second mixing spin chamber 12 through first through hole 111 and passes through the second through-hole 112
Second nozzle is flowed to, is finally sprayed from second nozzle 14.It is active to not only increase its liquid phase after multiple impacts mix for liquid
Property, also make the spray atomization uniformity, spraying granule degree increase, makes the drop more fine uniform sprayed.
It is equipped with casing 2 on the outside of the gun body 1 and forms the cavity 13 for compress wind flowing, described sleeve pipe 2 therebetween
Rear end side wall be equipped with and enter the third air inlet 9 of cavity 13 for compress wind.
16 rear end of dedusting cap is equipped with the internal screw thread for being used to connect with second nozzle, front end is equipped with a cyclic annular air outlet
17, the ring-type air outlet 17 is connected by multiple gas passages 15 circumferentially arranged on second nozzle 14 with cavity 13,
The cavity 13 is located at outside gun body, can play heat-insulated effect, influences gun body 1 by high-temperature flue gas baking, to subtract
Small its deformation, bending degree, disassembly easy to repair.
The front end of the ring-type air outlet 17 is equipped with towards the inclined guide face 161 of second nozzle 14, and guide face 161 can change
Become the air-out direction at cyclic annular air outlet 17.In the idle situation of denitration spray gun, compress wind is passed through by third air inlet 9,
Compress wind passes sequentially through cavity 13, gas passage 15, sprays from cyclic annular air outlet 17, leads by with what 16 front end of dedusting cap was arranged
Stream interface 161 is oriented to, and then changes the direction of compress wind, is sprayed compress wind along the outer surface of second nozzle end, will be attached to
Sundries on second nozzle 14, which is blown off, avoids its accumulation, prevents spray nozzle clogging, to reach nozzle clearing and its use of extended period
The purpose of the time limit.
The above descriptions are merely preferred embodiments of the present invention, not does in any form to the utility model
Limitation, any person skilled in the art do not departing within the scope of technical solutions of the utility model, practical new according to this
The technical spirit of type any simple modification, equivalent change and modification made to the above embodiment, still fall within the utility model
In the range of technical solution.
Claims (4)
1. a kind of denitration spray gun including gun body (1), is mounted on the second nozzle (14) of gun body front end and is sleeved on outside second nozzle
The dedusting cap (16) in portion, the dedusting cap are equipped with cyclic annular air outlet (17), it is characterised in that: set is equipped on the outside of the gun body (1)
It manages (2) and forms the cavity (13) for compress wind flowing therebetween, the rear end side wall of casing (2), which is equipped with, is used for compress wind
Into the third air inlet (9) of cavity；The ring-type air outlet passes through multiple gases circumferentially arranged on second nozzle (14)
Channel (15) is connected to cavity (13), and front end, which is equipped with towards second nozzle inclination, makes compress wind along the outer surface of second nozzle end
The guide face (161) of ejection.
2. a kind of denitration spray gun according to claim 1, it is characterised in that: gun body (1) rear end is equipped with gas-liquid mixed
Manage (6), the second air inlet (8) on gun body side wall, the eddy flow collision part (11) inside gun body；The gas-liquid mixed pipe
(6) it is respectively communicated with inlet (3), the first air inlet (4) being located at outside gun body, front end is located inside gun body and equipped with the
One nozzle (7)；The first jet (7) is between the second air inlet (8) and eddy flow collision part (11)；
Eddy flow collision part (11) rear end is circumferentially arranged with multiple first through hole (111), its front end circumferentially arranged with multiple second
Through-hole (112)；It forms first between the first jet and eddy flow collision part rear end to mix spin chamber (10), the eddy flow collision
It is formed and second mix spin chamber (12) between part (11) lateral wall and gun body (1) inner wall, the first mixing spin chamber (10) passes through the
One through-hole (111) is connected to the second mixing spin chamber (12), and the second mixing spin chamber (12) passes through the second through-hole (112) and second
Nozzle (14) connection.
3. a kind of denitration spray gun according to claim 2, it is characterised in that: the airintake direction of second air inlet (8)
It is tangent with gun body (1) inner wall.
4. a kind of denitration spray gun according to claim 2, it is characterised in that: the axis of the first through hole (111), second
The angle that the axis of through-hole (112) is formed is obtuse angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188923.2U CN209576252U (en) | 2019-02-03 | 2019-02-03 | A kind of denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188923.2U CN209576252U (en) | 2019-02-03 | 2019-02-03 | A kind of denitration spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209576252U true CN209576252U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920188923.2U Active CN209576252U (en) | 2019-02-03 | 2019-02-03 | A kind of denitration spray gun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758297A (en) * | 2021-09-17 | 2021-12-07 | 北京首钢股份有限公司 | Spray gun device of ejector and Bekenbach annular sleeve kiln |
-
2019
- 2019-02-03 CN CN201920188923.2U patent/CN209576252U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758297A (en) * | 2021-09-17 | 2021-12-07 | 北京首钢股份有限公司 | Spray gun device of ejector and Bekenbach annular sleeve kiln |
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