CN106334855A - Nitrogen protection device - Google Patents
Nitrogen protection device Download PDFInfo
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- CN106334855A CN106334855A CN201611011865.3A CN201611011865A CN106334855A CN 106334855 A CN106334855 A CN 106334855A CN 201611011865 A CN201611011865 A CN 201611011865A CN 106334855 A CN106334855 A CN 106334855A
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- gas
- pressure chamber
- intrinsic pressure
- inlet pipe
- ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
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- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
In that embodiment of the invention, a nitrogen protection cover is disclosed for improving the uniformity of nitrogen gas around the nozzle. The nitrogen protection device comprises a gas inlet port, a gas cover, a gas guide cover, an upper seal ring, a nano-hole ring, a lower seal ring and a lower seal ring, wherein the gas cover comprises an air inlet pipe and a gas internal pressure chamber, wherein one end of the gas inlet pipe is connected with the gas internal pressure chamber, the first mounting hole at the other end of the gas inlet pipe connected with the gas inlet port; a gas guide cover is arranged around the nozzle of the gas inlet pipe, and a predetermined gap is reserved on the periphery of the gas chamber; the nano-hole-shaped ring arranged inside the gas pressure chamber with a predetermined gap therebetween; and the upper seal ring isarranged between the upper end surface of the nano-hole-shaped ring and the gas internal pressure chamber, and a lower seal ring arranged between the lower end surface of the nano-hole-shaped ring and the compression sealing seat.A compression seal seat is provided under the gas pressure chamber.
Description
Technical field
The present invention relates to the nitrogen protection field of selectivity wave-soldering, more particularly, to a kind of nitrogen protection device.
Background technology
It is known that nitrogen is due to chemical property torpescence, and it is difficult under room temperature react with other materials, generally may be used
It is applied to different fields to be used as protective gas.
In the application process in selectivity wave-soldering, it is possible to use select weldering tip to be welded, wherein, put scolding tin mouth
By spray chamber, liquid tin can be sprayed, form stannum post it is possible to by point scolding tin mouth surrounding to dirty in scolding tin mouth position,
In this process, without protective gas protection a scolding tin mouth is protected, point scolding tin mouth spray liquid tin can and
The oxygen contact of in the air, and occur oxidation reaction easily to form oxide-film so that liquid tin is downward on top layer with oxygen
During stream, lead to flows decrease and form uneven oxide-film because mobility weakens, and oxide-film is easy to be stained with
Pcb plate (printed circuit board, printed circuit board) plate bottom, thus butt welding point outward appearance and welding quality cause seriously
Impact.Therefore, in order to avoid above-mentioned the occurrence of, select weldering tip welding process in all employ nitrogen protection arrange
Apply, to reduce liquid tin oxidation, improve the mobility of liquid tin, lift welding quality.
However, in the existing welding process selecting scolding tin mouth, because the nitrogen in nitrogen protection device is in gas outlet
Surrounding diffusion is uneven, leads to the nitrogen in a scolding tin mouth surrounding to be protected uneven, so that Xi Zui easily aoxidizes, reduces
The service life of point scolding tin mouth, and Biased flow phenomenon occurs, also dramatically have impact on the welding procedure of pcb plate so that welding
The effect connecing during pcb plate is bad, and the welding yield of pcb plate is relatively low.
Therefore, in sum it is necessary to provide a kind of nitrogen protection device, improve nitrogen uniform in a scolding tin mouth surrounding
Property, to solve the above problems.
Content of the invention
Embodiments provide a kind of nitrogen protection device, by the design of the poroid ring of nanometer, can be certain
So that nitrogen uniformly diffuses out such that it is able to preferably avoid spraying from the nozzle surrounding of crest generating device for wave-crest under pressure environment
Stannum oxidation above mouth, extends the life-span of point scolding tin mouth, improves welding efficiency and the quality of pcb plate.
In view of this, first aspect present invention provides a kind of nitrogen protection device, it may include:
Gas access interface, gas gas hood, gas flow guiding cover, upper sealing ring, the poroid ring of nanometer, lower seal, compression are close
Envelope seat；
Wherein, gas gas hood includes the gentle internal pressure chamber of air inlet pipe, and one end of air inlet pipe chamber intrinsic pressure with gas connects, air inlet
First installing hole of the other end of pipe is connected with gas access interface；
The top in the intrinsic pressure chamber of gas is provided with the nozzle surrounding for being set in crest generating device for wave-crest, and leaves in nozzle surrounding
The gas flow guiding cover of predetermined gap；
The poroid inside being located on the intrinsic pressure chamber of gas of nanometer, and between the poroid ring of nanometer and the intrinsic pressure chamber of gas, leave predetermined sky
Gap；
It is provided with sealing ring, the lower surface of the poroid ring of nanometer and pressure between the upper surface of the poroid ring of nanometer and the intrinsic pressure chamber of gas
It is provided with lower seal between tightening seal seat；
The lower section in the intrinsic pressure chamber of gas is provided with compression seal receptacle.
In conjunction with the embodiment of the present invention in a first aspect, the first embodiment of first aspect in the embodiment of the present invention
In, one end that air inlet pipe chamber intrinsic pressure with gas connects is provided with multiple pores for dissipating nitrogen.
In conjunction with the embodiment of the present invention in a first aspect, or the embodiment of the present invention first aspect the first embodiment,
In the second embodiment of the first aspect of the embodiment of the present invention, gas gas hood also includes heater, and heater sets
Inside in air inlet pipe.
In conjunction with the second embodiment of the first aspect of the embodiment of the present invention, in the first aspect of the embodiment of the present invention
In the third embodiment, the other end of air inlet pipe is additionally provided with the second installing hole, the second installing hole be used for by heater located at
The inside of air inlet pipe.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect the first embodiment to
Any one in three kinds of embodiments, in the 4th kind of embodiment of the first aspect of the embodiment of the present invention, gas is intrinsic pressure
The inner upper in chamber is provided with the first step being adapted to the bottom external diameter of gas flow guiding cover.
In conjunction with the embodiment of the present invention in a first aspect, the first embodiment of the first aspect of the embodiment of the present invention is to the 4th
Plant any one in embodiment, in the 5th kind of embodiment of the first aspect of the embodiment of the present invention, the intrinsic pressure chamber of gas
Inner upper be provided with the second step being adapted to the external diameter of the poroid ring of nanometer；
The lower inside in the intrinsic pressure chamber of gas is provided with the 3rd step being adapted to the external diameter of the poroid ring of nanometer.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect the first embodiment to
Any one in five kinds of embodiments, in the 6th kind of embodiment of the first aspect of the embodiment of the present invention, compression sealing
The top of base is provided with the mounting groove being adapted to the external diameter of lower seal.
In conjunction with the 6th kind of embodiment of the first aspect of the embodiment of the present invention, in the first aspect of the embodiment of the present invention
In 7th kind of embodiment, the lower inside in the intrinsic pressure chamber of gas is provided with the 4th being adapted to the upper end external diameter compressing seal receptacle
Rank；
Compression seal receptacle connected mode corresponding with the intrinsic pressure chamber of gas is threaded.
In conjunction with the 6th kind of embodiment of the first aspect of the embodiment of the present invention, in the first aspect of the embodiment of the present invention
In eight kinds of embodiments, compression seal receptacle connected mode corresponding with the intrinsic pressure chamber of gas is mode connects for screw.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect the first embodiment to
Any one in eight kinds of embodiments, in the 9th kind of embodiment of the first aspect of the embodiment of the present invention, air inlet pipe is
Bending structure.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
Embodiments provide a kind of nitrogen protection device, this nitrogen protection device can include gas access and connect
Mouth, gas gas hood, gas flow guiding cover, upper sealing ring, the poroid ring of nanometer, lower seal, compression seal receptacle.Wherein, gas gas hood
The gentle internal pressure chamber of air inlet pipe can be included, one end of air inlet pipe chamber intrinsic pressure with gas connects, and the first installing hole of the other end is then
Be connected with gas access interface, and centered on the intrinsic pressure chamber of gas, can by compression seal receptacle, lower seal, the poroid ring of nanometer,
The intrinsic pressure chamber of upper sealing ring, gas, gas flow guiding cover carry out corresponding assembly and connection according to order from the bottom up.
By applying above-mentioned nitrogen protection device, nitrogen can enter air inlet pipe by gas access interface, then by air inlet
Pipe enters to the pre- fixed gap between the intrinsic pressure chamber of gas and the poroid ring of nanometer, and the upper and lower end face due to the poroid ring of nanometer is respectively equipped with
Upper sealing ring, lower seal, then nitrogen can be full of in pre- fixed gap it is possible to the surrounding from the poroid ring of nanometer ooze out and to
The direction diffusion of gas flow guiding cover, thus be conducive to improving the uniformity of the nozzle surrounding in crest generating device for wave-crest for the nitrogen, effectively
Avoid the stannum above nozzle to aoxidize, and then a life-span for scolding tin mouth can be extended, improve welding efficiency and the quality of pcb plate.
Brief description
Fig. 1 is the first assembling schematic diagram of nitrogen protection device in the embodiment of the present invention；
Fig. 2 is the first structure schematic diagram of nitrogen protection device in the embodiment of the present invention；
Fig. 3 is the second structural representation of nitrogen protection device in the embodiment of the present invention；
Fig. 4 is the 3rd structural representation of nitrogen protection device in the embodiment of the present invention；
Fig. 5 is the second assembling schematic diagram of nitrogen protection device in the embodiment of the present invention.
Specific embodiment
Embodiments provide a kind of nitrogen protection device, by the design of the poroid ring of nanometer, can be certain
So that nitrogen uniformly diffuses out such that it is able to preferably avoid spraying from the nozzle surrounding of crest generating device for wave-crest under pressure environment
Stannum oxidation above mouth, extends the life-span of point scolding tin mouth, improves welding efficiency and the quality of pcb plate.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention it is clear that described embodiment is only
The embodiment of a present invention part, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of not making creative work, all should belong to the model of present invention protection
Enclose.
Term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second ", " the 3rd ", "
Four " etc. (if present) is for distinguishing similar object, without for describing specific order or precedence.Should manage
The data that solution so uses can be exchanged, in the appropriate case so that the embodiments described herein can be with except illustrating here
Or the order enforcement beyond the content of description.Additionally, term " comprising " and " having " and their any deformation it is intended that
Cover non-exclusive comprising, for example, contain series of steps or process, method, system, product or the equipment of unit need not limit
In those steps clearly listed or unit, but may include clearly not listing or for these processes, method, product
Product or the intrinsic other steps of equipment or unit.
For ease of understanding, below specifically detailed description is carried out to the nitrogen protection device in the embodiment of the present invention, please join
Read Fig. 1 and Fig. 2, in the embodiment of the present invention, one embodiment of nitrogen protection device includes:
Gas access interface 1, gas gas hood 2, gas flow guiding cover 3, upper sealing ring 4, the poroid ring of nanometer 5, lower seal 6,
Compression seal receptacle 7；
Wherein, gas gas hood 2 can include the gentle internal pressure chamber 22 of air inlet pipe 21, and one end of air inlet pipe 21 is intrinsic pressure with gas
Chamber 22 connects, and the first installing hole 212 of the other end of air inlet pipe 21 is connected with gas access interface 1；
The top in the intrinsic pressure chamber of gas 22 is provided with nozzle 8 surrounding for being set in crest generating device for wave-crest, and in nozzle 8 surrounding
Leave the gas flow guiding cover 3 of predetermined gap；
The poroid ring 5 of nanometer is located at the inside in the intrinsic pressure chamber of gas 22, and leaves between the poroid ring of nanometer 5 and the intrinsic pressure chamber of gas 22
Pre- fixed gap；
It is provided with sealing ring 4, the lower end of the poroid ring of nanometer 5 between the upper surface of the poroid ring 5 of nanometer and the intrinsic pressure chamber of gas 22
It is provided with lower seal 6 between face and compression seal receptacle 7；
The lower section in the intrinsic pressure chamber of gas 22 is provided with compression seal receptacle 7.
Specifically, gas access interface 1 is the entrance as nitrogen, and gas flow guiding cover 3 is the outlet as nitrogen, in order to
Nitrogen is conducive to uniformly and lentamente to spread at gas flow guiding cover 3, can using the poroid ring of nanometer 5 to the diffusion of nitrogen in addition
Control, this nanometer of poroid ring 5 is hollow-core construction, internal and external walls surrounding is filled with the through hole of Nano grade, in actual applications, receives
Metre hole shape ring 5 can be placed in the inside in the intrinsic pressure chamber of gas 22, and upper and lower end face carried out by upper sealing ring 4, lower seal 6 respectively close
Envelope it is possible to realize the sealing of upper and lower end face, meanwhile, in gas by compressing the connection of seal receptacle 7 and the intrinsic pressure chamber of gas 22
Intrinsic pressure chamber 22 side, by compression seal receptacle 7, lower seal 6, the poroid ring of nanometer 5, upper sealing ring 4, the intrinsic pressure chamber of gas 22, gas
Kuppe 3, according to after being linked in sequence from the bottom up, can form the through-hole structure of connection, the nozzle 8 of crest generating device for wave-crest can lead to
Cross the top that this through-hole structure extends to gas flow guiding cover 3, and nozzle 8 surrounding of gas flow guiding cover 3 and crest generating device for wave-crest it
Between leave predetermined gap, and the lower section compressing seal receptacle 7 can be tin liquor liquid level, so that the Way out of nitrogen is gas
Predetermined gap between nozzle 8 surrounding of kuppe 3 and crest generating device for wave-crest.
The nitrogen protection device of application described above, nitrogen can enter air inlet pipe 21 from gas access interface 1, due to entering
One end of trachea 21 chamber 22 intrinsic pressure with gas connects, then nitrogen can enter the intrinsic pressure chamber of gas 22 by air inlet pipe 21, and due to
The poroid ring 5 of nanometer is placed in the inside in the intrinsic pressure chamber of gas 22, and the upper and lower end face of the poroid ring of nanometer 5 respectively by upper sealing ring 4, under close
Seal 6 is sealed, then nitrogen will be entered into the pre- fixed gap between the poroid ring of nanometer 5 and the intrinsic pressure chamber of gas 22 by air inlet pipe 21
Interior, and be full of in the surrounding of the poroid ring of nanometer 5, then nitrogen under pressure, will be slowly and equably poroid from nanometer
The outer wall of ring 5 oozes out in the annulus of inwall, and between nozzle 8 surrounding of gas flow guiding cover 3 and crest generating device for wave-crest
Predetermined gap spread out so that nitrogen may be uniformly distributed in the surrounding of the nozzle 8 of crest generating device for wave-crest, thus may be used
Know, when liquid tin is sprayed by nozzle 8 by spray chamber, and when nozzle 8 position forms stannum post, liquid tin can pass through nozzle 8 four
Circumference is dirty, because the surrounding of nozzle 8 has the protection of uniform nitrogen, such that it is able to avoid liquid tin and the contact of oxygen to be formed
Oxide-film is it is also possible to avoid the Biased flow phenomenon occurring due to the oxidation of nozzle 8, and then can improve the service life of nozzle 8
Welding yield with pcb plate.
In said structure, in order to advantageously reduce the intensity of nitrogen and the diffusion of nitrogen, and make in gas
In intrinsic pressure chamber 22 formed nitrogen pressure, one end that air inlet pipe 21 chamber 22 intrinsic pressure with gas connects can be provided with multiple for dissipating nitrogen
The pore 211 of gas.It is understood that the number of this pore 211, size and distributing position can be carried out according to actual needs
Design, does not specifically limit herein.
In the present embodiment, the simplicity in order to realize the intrinsic pressure chamber of gas flow guiding cover 3 and gas 22 is connected, gas flow guiding cover 3
Lower end can be concave inward structure, be the type of falling l structure, accordingly, the intrinsic pressure chamber of gas 22 along one week of gas flow guiding cover 3 lower end
Inner upper can be provided with the first step 221 being adapted to the bottom external diameter of gas flow guiding cover 3, that is, the type of falling l structure is formed
External diameter chamber 22 intrinsic pressure with gas in first step 221 formed internal diameter consistent, thus gas flow guiding cover 3 is sheathed on first step
Can get effectively fixing in the space of 221 formation.
Further, so that nitrogen can be full of the predetermined sky between the poroid ring of nanometer 5 and the intrinsic pressure chamber of gas 22
In gap, and the poroid ring of nanometer 5 is installed preferably inside the intrinsic pressure chamber of gas 22, the inner upper in the intrinsic pressure chamber of gas 22 can be provided with
The second step 222 that the external diameter of ring 5 poroid with nanometer is adapted to, this second step 222 is adjacent with first step 221, and in gas
The lower inside in intrinsic pressure chamber 22 can be provided with the 3rd step 223 that the external diameter of ring 5 poroid with nanometer is adapted to, then so that nanometer is poroid
It is pre- fixed gap between the inwall in the outer wall of ring 5 and the intrinsic pressure chamber of gas 2, the big I foundation of this pre- fixed gap is actually needed and carries out
Corresponding design.Meanwhile, the top of compression sealed base 7 is provided with the mounting groove 71 being adapted to the external diameter of lower seal 6, lower sealing
Circle 6 can be placed in the mounting groove 71 on compression sealed base 7, then is placed in inside the intrinsic pressure chamber of gas 22 in the poroid ring of nanometer 5
When, if upper sealing ring 4 is placed in the upper surface of the poroid ring of nanometer 5, the compression sealed base 7 of lower seal 6 will be installed
After chamber 22 intrinsic pressure with gas is connected, upper sealing ring 4 is located at upper surface, the lower end of the poroid ring of nanometer 5 respectively with lower seal 6
Face, such that it is able to effectively prevent space China and foreign countries between the poroid ring of nanometer 5 and the intrinsic pressure chamber of gas 2, compression seal receptacle 7 for the nitrogen
Let out, be conducive to the formation of nitrogen pressure in pre- fixed gap.
Further, in the present embodiment, the lower inside in the intrinsic pressure chamber of gas 22 can be provided with and compress the upper of seal receptacle 7
4th step 224 of outer end diameter adaptation, wherein, the corresponding connected mode in compression seal receptacle 7 chamber 22 intrinsic pressure with gas can be
Threaded, simply and easily connected mode is conducive to upper sealing ring 4, lower seal 6, also or the poroid ring of nanometer 5 is carried out
Safeguard or replace.
It should be noted that the intrinsic pressure chamber of the gas of described above 22 in the present embodiment, gas flow guiding cover 3, compression seal receptacle 7
Dependency structure, in actual applications, can also be other, between chamber 22 as intrinsic pressure in gas, gas flow guiding cover 3, high temperature can be used
Glue is connected and sealed or welds, and is not limited to simply sheathed connection, as long as enabling to can reach each other
To the preferably annexation being actually needed, specifically do not limit herein.
On the basis of above-described embodiment, as shown in figure 3, nozzle 8 can be improved in welding by additional heating device 23
During the problem of company's stannum that occurs, in the embodiment of the present invention, another embodiment of nitrogen protection device includes:
Gas gas hood 2 can also include heater 23, and heater 23 can be located at the inside of air inlet pipe 21.
Specifically, air inlet pipe 21 is arranged on the outside of stannum stove, air inlet pipe 21 can be avoided to be corroded, improve air inlet pipe 21
Reliability and safety, then when heater 23 is placed in the inside of air inlet pipe 21, can safely be fed trachea 21
Internal nitrogen is heated, and obtains required nitrogen temperature, such as when the temperature of liquid tin can reach 300 degrees Celsius, can
So that nitrogen is heated to 250 to 300 degrees Celsius, such that it is able to improve asking of company's stannum that nozzle 8 is likely to occur in welding process
Topic is it is also possible to improve the adaptability to different pcb plate weld techniques for the crest generating device for wave-crest, and then improve production efficiency.
In said structure, because air inlet pipe 21 is tubular structure, so that nitrogen inlet and heater 23 not phase
Conflict, air inlet pipe 21 can be provided with the second installing hole 213, and this second installing hole 213 is used for heater 23 located at air inlet pipe
Inside.In the present embodiment, heater 23 can be electric heater unit, such as electrical bar, and electrical bar is put by the second installing hole 213
In the inside of air inlet pipe 21, and there is gap and the tube wall of air inlet pipe 21 between, the circulation of nitrogen can be promoted, meanwhile, in air inlet
In pipe 21, the side wall near the second installing hole 213 is provided with opening and forms the first installing hole 212, gas access interface 1 and first
Installing hole 212 connects to be passed through nitrogen so that nitrogen can be fully contacted with electrical bar, improves the efficiency of heating surface of nitrogen, and by
It is connected with the first installing hole 212 in the second installing hole 213, increased the contact path that nitrogen is with electrical bar and time of contact, enter
One step improves the efficiency of heating surface.
It is understood that heater 23, except the content of described above, in actual applications, also may be used in the present embodiment
Using other, as long as corresponding heats can be reached and use safely, specifically not limit herein.
It should be noted that for the nitrogen protection device being adapted to different dynamic driving means, compressing seal receptacle 7 and gas
The corresponding connected mode in internal pressure chamber 2 can be different, refer to Fig. 4 and Fig. 5, in the embodiment of the present invention, nitrogen protection device is another
Embodiment includes:
The corresponding connected mode in compression seal receptacle 7 chamber 2 intrinsic pressure with gas is mode connects for screw.
Specifically, in the application of nitrogen protection device, can be to there are different driving means, such as electromagnetic pump or machinery
Pump, is adapted to different driving means, the structure annexation of nitrogen protection device can be different, with mechanical pump for driving dress
In the application put, in order to strengthen compressing the interconnection function between seal receptacle 7 and the intrinsic pressure chamber of gas 22, set above compression seal receptacle 7
The surrounding having mounting groove 71 can be provided with screw 72, then screw can be compressed seal receptacle 7 by screw 72 intrinsic pressure with gas
Chamber 22 is attached.
Further, depend on the design structure of mechanical pump, the air inlet pipe 21 in the present embodiment can be bending structure, should
One end of air inlet pipe 21 equally can connect it is possible to be placed in the lower section in the intrinsic pressure chamber of gas 22 between chamber 22 intrinsic pressure with gas.
It should be noted that in the application with battery pump as driving means, air inlet pipe 21 can also be bending structure,
In practical application, corresponding structure design can be carried out according to actual needs, as long as disclosure satisfy that the effect of air inlet pipe 21, tool
Body does not limit herein.
It is understood that the external structure in the intrinsic pressure chamber of gas 22 is except cylinder, in actual applications or its
It, the such as rectangle in the present embodiment, as long as enable to shape between the outer wall of the poroid ring of nanometer 5 and the inwall in the intrinsic pressure chamber of gas 22
Become pre- fixed gap, specifically do not limit herein.
Thus, as can be seen that the structure of gas gas hood 2 can be diversified from the present embodiment, air inlet can effectively be adjusted
Pipe 21 and the shape in the intrinsic pressure chamber of air pressure 22 or link position between the two, are conducive to adapting to the different productions of nitrogen protection device
Need, there is flexible and changeable property.
Those skilled in the art can be understood that, for convenience and simplicity of description, in this specification each
Embodiment is described by the way of going forward one by one, and what each embodiment stressed is the difference with other embodiment, each
Between embodiment identical similar portion mutually referring to.
It should be understood that above example is only in order to illustrate the present invention's in several embodiments provided herein
Technical scheme, is not intended to limit；Although being described in detail to the present invention with reference to the foregoing embodiments, this area common
Technical staff it is understood that it still can be modified to the technical scheme described in foregoing embodiments, or to wherein
Some technical characteristics carry out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this
The spirit and scope of bright each embodiment technical scheme.
Claims (10)
1. a kind of nitrogen protection device is it is characterised in that include:
Gas access interface, gas gas hood, gas flow guiding cover, upper sealing ring, the poroid ring of nanometer, lower seal, compression seal receptacle；
Wherein, described gas gas hood includes the gentle internal pressure chamber of air inlet pipe, one end of described air inlet pipe intrinsic pressure chamber with described gas
Connection, the first installing hole of the other end of described air inlet pipe is connected with described gas access interface；
The top in the intrinsic pressure chamber of described gas is provided with the nozzle surrounding for being set in crest generating device for wave-crest, and in nozzle four described in s
The described gas flow guiding cover of Zhou Liuyou predetermined gap；
The poroid inside being located on the intrinsic pressure chamber of described gas of described nanometer, and the poroid ring of described nanometer with described gas intrinsic pressure chamber it
Between leave pre- fixed gap；
It is provided with sealing ring, under the poroid ring of described nanometer between the upper surface of the poroid ring of described nanometer and the intrinsic pressure chamber of described gas
It is provided with lower seal between end face and described compression seal receptacle；
The lower section in the intrinsic pressure chamber of described gas is provided with described compression seal receptacle.
2. it is characterised in that described air inlet pipe is with described gas, intrinsic pressure chamber connects nitrogen protection device according to claim 1
Logical one end is provided with multiple pores for dissipating nitrogen.
3. nitrogen protection device according to claim 1 is it is characterised in that described gas gas hood also includes heater,
Described heater is located at the inside of described air inlet pipe.
4. nitrogen protection device according to claim 3 is it is characterised in that the other end of described air inlet pipe is additionally provided with second
Installing hole, described second installing hole is used for described heater located at the inside of described air inlet pipe.
5. nitrogen protection device according to any one of claim 1 to 4 is it is characterised in that described gas intrinsic pressure chamber
Inner upper is provided with the first step being adapted to the bottom external diameter of described gas flow guiding cover.
6. nitrogen protection device according to any one of claim 1 to 4 is it is characterised in that described gas intrinsic pressure chamber
Inner upper is provided with the second step being adapted to the external diameter of the poroid ring of described nanometer；
The lower inside in the intrinsic pressure chamber of described gas is provided with the 3rd step being adapted to the external diameter of the poroid ring of described nanometer.
7. nitrogen protection device according to any one of claim 1 to 4 is it is characterised in that described compression sealed base
Top be provided with the mounting groove being adapted to the external diameter of described lower seal.
8. nitrogen protection device according to claim 7 is it is characterised in that the lower inside in the intrinsic pressure chamber of described gas is provided with
The 4th step being adapted to the upper end external diameter of described compression seal receptacle；
Described compression seal receptacle connected mode corresponding with the intrinsic pressure chamber of described gas is threaded.
9. nitrogen protection device according to claim 7 is it is characterised in that described compression seal receptacle is intrinsic pressure with described gas
The corresponding connected mode in chamber is mode connects for screw.
10. nitrogen protection device according to claim 8 or claim 9 is it is characterised in that described air inlet pipe is bending structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611011865.3A CN106334855A (en) | 2016-11-17 | 2016-11-17 | Nitrogen protection device |
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| CN201611011865.3A CN106334855A (en) | 2016-11-17 | 2016-11-17 | Nitrogen protection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539049A (en) * | 2019-10-14 | 2019-12-06 | 深圳市劲拓自动化设备股份有限公司 | Welding device and selective wave soldering device |
| CN110539050A (en) * | 2019-10-14 | 2019-12-06 | 深圳市劲拓自动化设备股份有限公司 | welding device and selective wave soldering device |
| CN110548952A (en) * | 2019-10-14 | 2019-12-10 | 深圳市劲拓自动化设备股份有限公司 | Welding device and selective wave soldering device |
| US20220347780A1 (en) * | 2019-08-30 | 2022-11-03 | Seho Vermögensverwaltungs Gmbh & Co. Kg | Soldering nozzle and method for the production thereof |
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| US20220347780A1 (en) * | 2019-08-30 | 2022-11-03 | Seho Vermögensverwaltungs Gmbh & Co. Kg | Soldering nozzle and method for the production thereof |
| CN110539049A (en) * | 2019-10-14 | 2019-12-06 | 深圳市劲拓自动化设备股份有限公司 | Welding device and selective wave soldering device |
| CN110539050A (en) * | 2019-10-14 | 2019-12-06 | 深圳市劲拓自动化设备股份有限公司 | welding device and selective wave soldering device |
| CN110548952A (en) * | 2019-10-14 | 2019-12-10 | 深圳市劲拓自动化设备股份有限公司 | Welding device and selective wave soldering device |
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