CN106076685A - A kind of two-fluid spray spray gun - Google Patents
A kind of two-fluid spray spray gun Download PDFInfo
- Publication number
- CN106076685A CN106076685A CN201610598199.1A CN201610598199A CN106076685A CN 106076685 A CN106076685 A CN 106076685A CN 201610598199 A CN201610598199 A CN 201610598199A CN 106076685 A CN106076685 A CN 106076685A
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- gas
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- liquid mixed
- gun body
- spray
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
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Abstract
A kind of two-fluid spray spray gun, including tubular gun body, the feed tube being coaxially disposed with gun body end, it is arranged at the air inlet pipe of tubular gun body sidewall and tubular gun body inner space, tubular gun body cavity one end seals the gas-liquid mixed joint being provided with, gas-liquid mixed connector center offers through hybrid channel, center, feed tube connects with one end, hybrid channel, center of gas-liquid mixed joint in stretching into tubular gun body, hybrid channel, the center other end of gas-liquid mixed joint connects gas-liquid mixed long tube, the long tube end of gas-liquid mixed connects lance head, cavity between tubular gun body inwall and feed tube constitutes inlet channel, gas-liquid mixed joint sidewall offers the air inlet of hybrid channel, connection center and tubular gun body inner chamber.Flow is big, spray orifice greatly, simultaneously mist formation performance good, anti-stifled again.
Description
Technical field
The present invention is for coal-burning boiler, the denitration of kiln, the flue cooling of desulphurization system, the two-fluid spray spray of dedusting
Rifle, belongs to environmental protection machinery industry.
Background technology
In industrial circle, power plant, smeltery, the fire coal in cement plant, gas furnace produce containing nitre, sulfur waste gas, pass through
Environment protection treating can be only achieved the discharge standard of country, and the method for denitration typically with the catalytic absorption agent such as carbamide, ammonia, is dissolved in water
In, the method mixing spray by aqueous vapor, waste gas is sprayed with spray gun, washs, can be only achieved purpose.Therefore, spray pistol
Mist formation performance quality, directly influences the effect of denitration, desulfurization, also simultaneously with consumption, the height of equipment operating cost of the water yield
Relevant.The spray gun of original technology also exists following deficiency: one is mist formation poor performance, and droplet is thick, uses the same water yield, atomization droplet
Surface area ratio is little, and few with the contact area of waste gas, mixed effect is poor, and the efficiency of denitration desulfurization is low；Two is that spray gun easily blocks up, and especially exists
During denitration, what spray gun sprayed is the solution of carbamide, and carbamide can produce crystallization, and crystalline solid easily blocks up the spray orifice of spray gun.If but with strengthening
The method of spray orifice, the problem solving Crystallization Plugging, there will be again because spray orifice aperture is big, and produce the problem that fogging declines.Example
As the injection diameter of conventional lance is generally 1 ~ 2mm, spouting liquid is mist formation best performance when 250kg/h, but aperture is at 1 ~ 2mm
Time, the anti-clogging extreme difference of spray gun.If user needs the spray gun of big flow, the most per hour discharge rate 500 ~
During 10000kg, one is the spray gun selecting spray orifice big, and the result obtained is the mist formation hydraulic performance decline of spray gun, sacrifices the effect of equipment
Rate；Two heads being selected at spray gun arrange the spray orifice within multiple diameter 2mm, and result flow is big, and mist formation performance is also good,
But resistive connection is brilliant, impurity plugging performance difference still cannot overcome.
As it has been described above, denitration, desulphurization system flue temperature reduction technology in the spray gun that uses there are still the deficiency of technology,
People are difficult to find that and integrate that spray amount is big, anti-clogging good, the spray gun of three advantages of mist formation performance, therefore denitration,
The spray gun used in the flue cooling of desulphurization system, dust collecting process, still has the space that improvement promotes.
Summary of the invention
The present invention solves that the fogging of original two-fluid spray spray gun is poor, efficiency is low, easily blocks up when spraying carbamide, ammonia solution
The deficiency of spray orifice, also overcomes the shortcoming that in original technology, water consumption is big simultaneously.There is provided that a kind of flow is big, spray orifice greatly, become simultaneously
Mist performance is good, again anti-stifled two-fluid spray spray gun.
For realizing the object of the invention, it is provided that techniques below scheme: a kind of two-fluid spray spray gun, including tubular gun body,
The feed tube that is coaxially disposed with gun body end, being arranged at the tubular gun body sidewall air inlet pipe with tubular gun body inner space, it is special
Levy and be that tubular gun body cavity one end seals the gas-liquid mixed joint that is provided with, gas-liquid mixed connector center offer through in
Heart hybrid channel, feed tube connects with one end, hybrid channel, center of gas-liquid mixed joint in stretching into tubular gun body, gas-liquid mixed
Hybrid channel, the center other end of joint connects gas-liquid mixed long tube, and the long tube end of gas-liquid mixed connects lance head, tubular gun body
Cavity between inwall and feed tube constitutes inlet channel, and gas-liquid mixed joint sidewall offers hybrid channel, connection center and enters
The air inlet of gas passage.
As preferably, gas-liquid mixed joint is formed by 1 ~ n the most sheathed being tightly connected of T-shaped set, and T-shaped set includes path section
With big footpath section, the big footpath section of adjacent T-shaped set is socketed in path section, and 1 ~ n T-shaped set central through hole is interconnected described in composition
Hybrid channel, center, the 1st the T-shaped set central through hole near feed tube is connected with feed tube, and the TXing Tao center of 1 ~ n-1 leads to
Hole is peripheral, offers through looping pit or several through holes, through looping pit or several through hole phases around center of circle correspondence
Intercommunicated and connect with inlet channel, the end face of the enlarged diameter section of 2 ~ n T-shaped set offers the reaming corresponding with path section,
Counter bore diameter is more than path section external diameter, and counterbore depth is longer than path segment length, gap between path section and reaming constitute with in
The air inlet of heart hybrid channel connection, air inlet is hole shape circumferential weld structure.In order to make gas-liquid mixed in gas-liquid mixed long tube more
Fully, the present invention is set to multilamellar the air inlet entering liquid, leaves certain spacing distance between layers, it is therefore an objective to allow
Liquid flow impact is mixed by air-flow classification successively, and such mixed effect can be more preferably.
As preferably, the reaming of 2 ~ n T-shaped set and central through hole joining place are provided with chamfer bevel.Purpose be in order to
Reducing the flow resistance of gas, increase operational efficiency, another effect is to prevent hyperbar gas from producing adverse current, because the pressure of tube for transfusion
Power is less than air pressure, and the purpose of chamfering is to take into account the efficiency of spray gun and anti back-flow function.
As preferably, chamfer bevel controls at 30 ~ 70 °.It is the angle between finger-hole shape circumferential weld and spray gun axis, its effect
It is to flow to for gas flow guiding, it is therefore an objective on the premise of reducing flow resistance, improving fluid sport efficiency, allow air-flow be formed with liquid stream
Effect angle of attack, make both preferably mix, its angle typically between 70 ~ 30 °, preferably 45 °.
Level during the air inlet hierarchical of heretofore described entrance fluid is arranged is how many, depending on the discharge rate of spray gun,
Discharge rate is big, and level palpus is many, and spray effect is all right, otherwise then level can be arranged less.General spouting liquid leads at 250kg/h, air inlet
The level in road arrange 1 ~ 2 grade appropriate；If discharge rate is 5000kg/h, the level of air intake passage may be configured as 4 ~ 6 grades.
Due to gas-liquid mixed joint form and the improvement of structure, gas-liquid mixed long tube lengthens in addition so that gas and liquid are in spray
There is fabulous admixture the inside of rifle, also will not produce gas-liquid lamination when liquid ejection spray orifice.The most this spray gun,
Requirement to spray orifice size is tight, and spray orifice increase there is no the biggest impact to spray effect, so the diameter of spray gun spray orifice can be put
Big to 6 ~ 8mm, also there is fabulous mist formation performance.The amplification of spray orifice, directly overcomes the deficiency blocking spray orifice in original technology, energy
The solid material allowing particle diameter be less than injection diameter passes through spray orifice.
As preferably, gas-liquid mixed joint includes matrix, the hybrid channel, center at matrix center, and matrix path section stretches into cylinder
Being connected with feed tube in shape gun body, path section diameter is less than tubular gun body internal diameter, and path section sidewall offers some groups and tilts court
Air inlet to axle center, hybrid channel, center.
As preferably, path section sidewall offers some rectangle grooves around the center of circle.
As preferably, stage casing, hybrid channel, center is set to path closing in section.
As preferably, lance head and gas-liquid mixed long tube junction have additional gas-liquid mixed set, are provided with in gas-liquid mixed set
Spiral diversion body.Lance head is the second gas-liquid mixed chamber near the position of spray orifice, is that the first gas-liquid is mixed in gas-liquid mixed long tube
Close chamber, define two gas-liquid mixed chambeies before and after gas-liquid mixed set, between two hybrid chambers, be provided with spiral diversion body.Spray gun exists
Work seasonal epidemic pathogens and liquid are after the first gas-liquid mixed chamber is mixed into aerosol, then by spiral stream guidance body, enter the second gas-liquid mixed chamber,
Aerosol, after spiral stream guidance, produces and rotates, and enters back into spray orifice ejection dispersibility more preferable mist hat.The purpose of second hybrid chamber
Being to allow aerosol pass through spirochetal water conservancy diversion, produce and rotate rapidly, then spray spray orifice, this can make the many sprays of spray gun ejection in single spraying hole
The spray effect of hole spray gun, therefore injection diameter can be not affect spray effect, the most beneficially solid crystal thing relatively greatly
Pass through, improve the anti-blocking performance of spray gun.
Spiral stream guidance body described in the present embodiment can use the flow deflector in conventional spray equipment, not finite form and rotation
To, as long as it is the most permissible that aerosol can be made to rotate.
As preferably, the long length of tube of gas-liquid mixed is more than 100mm.
The method have the benefit that the direction of the fluid inlet mouth in entrance gas-liquid mixed long tube by radially changing into and spray gun
The most in the same direction, the angle of current is adjusted to 180 ° from 90 °, axially flows to air inlet pipe again change into radially flowing to, and such setting can make
Liquid impact by air-flow in hybrid chamber is bigger, and it is longer that liquid runs residence time in hybrid chamber, and gas-liquid mixed is more
Fully, therefore the mist formation performance of spray gun is more preferable.Improved by the spray gun fogging of the improvement of the present invention, make denitration, desulfurization cigarette
The effect of road cooling significantly improves, the favourable raising of environmental improvement level；The anti-blocking performance of spray gun improves 4 than original technology
~ 5 times, thus improve the safety of spray gun, stability；Owing to the mist formation performance of spray gun improves, lower pressure therefore can be made
Denitration that gas-liquid also can obtain, cooling-down effect, therefore can reduce the power consumption of gas-liquid pumping system, saves the energy；Pass through
Spray gun after improvement, can make the mist formation performance that the post of big discharge rate also can obtain, can reduce buying number for a user
Amount, also can reach environment protecting, save the cost of investment of user.
Accompanying drawing explanation
Fig. 1 is former technology spray gun structure schematic diagram.
Fig. 2 is the structural representation of embodiment 1.
Fig. 3 is the gas-liquid mixed joint schematic diagram of Fig. 2.
Fig. 4 is embodiment 2 structural representation.
Fig. 5 is embodiment 3 structural representation.
Fig. 6 be in Fig. 5 A-A to sectional view.
Fig. 7 is lance head partial structurtes schematic diagram.
Detailed description of the invention
Embodiment 1: a kind of two-fluid spray spray gun, the feed tube being coaxially disposed with gun body 1 end including tubular gun body 1
2, being arranged at the air inlet pipe 1.1 of tubular gun body 1 sidewall and tubular gun body 1 inner space, tubular gun body 1 cavity one end seals and arranges
Some gas-liquid mixed joints 3, gas-liquid mixed joint 3 is formed by 4 T-shaped the most sheathed being tightly connected of set 3.1, and T-shaped set 3.1 includes
Path section 3.1.1 and big footpath section 3.1.2, big footpath section 3.1.2 of adjacent T-shaped set 3.1 is socketed in path section 3.1.1, and 4 T-shaped
Overlap 3.1 central through hole 3.1.3 to be interconnected hybrid channel, composition center 3.2, in the 1st T-shaped set 3.1 of feed tube 2
Heart through hole 3.1.3 is connected with feed tube 2, and the T-shaped set 3.1 central through hole 3.1.3 of 1 ~ 3 is peripheral, offers around center of circle correspondence
Through looping pit or several through holes 3.1.4, through looping pit or several through holes 3.1.4 are interconnected and lead to air inlet
Road 4 connects, and the end face of the enlarged diameter section 3.1.2 of the 2nd ~ 4 T-shaped set 3.1 offers the reaming corresponding with path section 3.1.1, expands
Bore dia is more than path section 3.1.1 external diameter, and counterbore depth is longer than path section 3.1.1 length, between path section 3.1.1 and reaming
Gap constitutes the air inlet 3.3 connected with hybrid channel, center 3.2, air inlet is hole shape circumferential weld structure, gas-liquid mixed joint 3
Hybrid channel, center 3.2 other end connect gas-liquid mixed long tube 5, gas-liquid mixed long tube 5 end connects lance head 6.2nd ~ 4
The reaming of T-shaped set 3.1 and central through hole 3.1.3 joining place are provided with chamfer bevel 3.1.5.Chamfer bevel 3.1.5 is 45 °.Spray
During the work of spray painting rifle, spray gun feed tube is connected with external infusion equipment, and air inlet pipe is connected with the equipment of outside conveying high-pressure air,
Open valve, liquid enters the hybrid channel, center of gas-liquid mixed joint by feed tube, and gas enters gas by inlet channel
The air inlet of liquid hybrid juction.Gas enters in the fluid of hybrid channel, center by multilamellar air inlet, and gas-liquid enters back into gas-liquid and mixes
Close long tube.In gas-liquid mixed long tube, gas-liquid mutually impacts, rotate and be mixed into aerosol, then through lance head, the spray orifice of head is outside
The mist hat that ejection mist formation is very carefully the evenest, implements spray to object, reaches the purpose of the present invention.
Embodiment 2: with reference to embodiment 1, gas-liquid mixed joint 3 includes matrix, the hybrid channel, center 3.2 at matrix center,
Matrix path section 3.4 is connected with feed tube 2 in stretching into tubular gun body 1, and path section 3.4 diameter is less than tubular gun body 1 internal diameter, path
Section 3.4 sidewalls offer 3 dry groups of air inlets 3.3 tilted towards axle center, hybrid channel, center 3.2.In hybrid channel, center 3.2
Section is set to path closing in section 3.2.1.
Embodiment 3: with reference to embodiment 2, path section 3.4 sidewall offers some rectangle grooves 3.5 around the center of circle.
In above-described embodiment 1 ~ 3, lance head 6 and gas-liquid mixed long tube 5 junction all can have additional gas-liquid mixed set 7, gas-liquid
Spiral diversion body 8 it is provided with in mixing capsule 7.
Gas-liquid mixed long tube 5, really one Long Circle passage, is in intracavity rolling, rotary impact flowing for gas-liquid
Cavity, with original technology (Fig. 1) ratio, the length of hybrid chamber increases many, increases by 500 ~ 800mm, gas from original 40 ~ 50mm
The purpose that liquid hybrid chamber increases is to allow gas and liquid have time enough and spatial mixing at intracavity, promotes mixed effect.To mixing
The determination foundation of cavity length is size according to spray gun with discharge rate number depending on, spraying the spray gun of 500kg liquid be per hour
Example, the rational length of hybrid chamber arranges the most suitable of 500 ~ 800mm.Hybrid chamber is shorter, and such as length is less than 100mm, will
Affect into fog effect, long also can affect spraying effect.
The spray orifice 6.1 of described lance head 6 head can be single hole, it is also possible to be porous combination, according to the crown state of mist
Actual requirement can arrange and can also be arranged in the plane on sphere.
Usually choose suitable stainless steel tube and shower nozzle material, make each parts of spray gun.
The heretofore described air inlet hierarchical entering fluid is arranged, and can be ring-shaped slot formula multilamellar (Fig. 2), also
Can be hole shape multilamellar (Fig. 3), it is also possible to be the segment of the certain length of periphery at fluid passage, in dispersed circle hole shape
Arrange (Fig. 4,5), air inlet difformity, the setting of form, do not affect the essence of the present invention, all in protection scope of the present invention
In.
Described spiral diversion body in above-described embodiment may be disposed at gas-liquid mixed long tube end or lance head front end, only
Constitute two gas-liquid mixed chambeies before and after making it, all can realize the object of the invention, belong to the scope of protection of the invention.
Claims (9)
1. a two-fluid spray spray gun, the feed tube being coaxially disposed with gun body end including tubular gun body, is arranged at tubular rifle
Body sidewall and the air inlet pipe of tubular gun body inner space, it is characterised in that tubular gun body cavity one end seals the gas-liquid being provided with and mixes
Splice grafting head, gas-liquid mixed connector center offers through hybrid channel, center, and feed tube mixes with gas-liquid in stretching into tubular gun body
One end, hybrid channel, center connection of splice grafting head, it is long that hybrid channel, the center other end of gas-liquid mixed joint connects gas-liquid mixed
Pipe, the long tube end of gas-liquid mixed connects lance head, and the cavity between tubular gun body inwall and feed tube constitutes inlet channel, gas-liquid
Hybrid juction sidewall offers the air inlet of hybrid channel, connection center and inlet channel.
A kind of two-fluid spray spray gun the most according to claim 1, it is characterised in that gas-liquid mixed joint is T-shaped by 1 ~ n
Overlapping the most sheathed being tightly connected to form, T-shaped set includes path section and big footpath section, and the big footpath section of adjacent T-shaped set is socketed on path section
On, 1 ~ n T-shaped set central through hole be interconnected constitute described in hybrid channel, center, in the 1st T-shaped set of feed tube
Heart through hole is connected with feed tube, and the T-shaped set central through hole of 1 ~ n-1 is peripheral, around center of circle correspondence offer through looping pit or
Several through holes, through looping pit or several through holes are interconnected and connect with inlet channel, 2 ~ n T-shaped set big
The end face of diameter segment offers the reaming corresponding with path section, and counter bore diameter is more than path section external diameter, and counterbore depth is longer than path
Segment length, the gap between path section and reaming constitutes the air inlet connected with hybrid channel, center, and air inlet is hole shape circumferential weld
Structure.
A kind of two-fluid spray spray gun the most according to claim 2, it is characterised in that the reaming of 2 ~ n T-shaped set with in
Heart through hole joining place is provided with chamfer bevel.
A kind of two-fluid spray spray gun the most according to claim 3, it is characterised in that chamfer bevel controls at 30 ~ 70 °.
A kind of two-fluid spray spray gun the most according to claim 1, it is characterised in that gas-liquid mixed joint includes matrix, base
The hybrid channel, center at body center, matrix path section is connected with feed tube in stretching into tubular gun body, and path section diameter is less than tubular
Gun body internal diameter, path section sidewall offers the some groups of air inlets tilted towards axle center, hybrid channel, center.
A kind of two-fluid spray spray gun the most according to claim 5, it is characterised in that path section sidewall is offered around the center of circle
There are some rectangle grooves.
7. according to a kind of two-fluid spray spray gun described in claim 5 or 6, it is characterised in that stage casing, hybrid channel, center is arranged
For path closing in section.
8. according to a kind of two-fluid spray spray gun one of claim 1 ~ 5 Suo Shu, it is characterised in that lance head and gas-liquid mixed
Long tube junction has additional gas-liquid mixed set, is provided with spiral diversion body in gas-liquid mixed set.
9. according to a kind of two-fluid spray spray gun one of claim 1 ~ 5 Suo Shu, it is characterised in that the long length of tube of gas-liquid mixed
More than 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610598199.1A CN106076685B (en) | 2016-07-27 | 2016-07-27 | A kind of two-fluid spray spray gun |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598199.1A CN106076685B (en) | 2016-07-27 | 2016-07-27 | A kind of two-fluid spray spray gun |
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| CN106076685A true CN106076685A (en) | 2016-11-09 |
| CN106076685B CN106076685B (en) | 2018-11-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621637A (en) * | 2017-02-13 | 2017-05-10 | 昆明奥图环保设备股份有限公司 | Dry fog box |
| CN108379632A (en) * | 2018-05-25 | 2018-08-10 | 广州市君望机器人自动化有限公司 | A kind of sterilizing machine |
| CN109550748A (en) * | 2017-09-25 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Gas purging device |
| CN109731705A (en) * | 2018-12-27 | 2019-05-10 | 上海工程技术大学 | A minimal amount lubrication device and method of using the same |
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| CN109731705A (en) * | 2018-12-27 | 2019-05-10 | 上海工程技术大学 | A minimal amount lubrication device and method of using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106076685B (en) | 2018-11-16 |
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