CN207783239U - A kind of center feeding type laminar flow plasma spheroidization device - Google Patents
A kind of center feeding type laminar flow plasma spheroidization device Download PDFInfo
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- CN207783239U CN207783239U CN201721471302.2U CN201721471302U CN207783239U CN 207783239 U CN207783239 U CN 207783239U CN 201721471302 U CN201721471302 U CN 201721471302U CN 207783239 U CN207783239 U CN 207783239U
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- laminar flow
- flow plasma
- cooling water
- feeding type
- retort
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Abstract
The utility model discloses a kind of center feeding type laminar flow plasma spheroidization devices, including retort and collecting tank, laminar flow plasma nozzle and feed pipe are provided in the retort, the feed pipe is connected with the plasma nozzle of laminar flow, the utility model can ensure the center that material is directly sent to laminar flow plasmatorch, both the treatment temperature to material had been improved, material is enable fully to be heated, has improved the quality of nodularization；Material can be made to be come into full contact with plasmatorch again, to improve the Oxygen potential of material.
Description
Technical field
The utility model is related to plasma spheroidization technical fields, and in particular to a kind of center feeding type laminar flow plasma spheroidization
Device.
Background technology
Plasma spheroidization technology refers to generating plasma by DC power supply, and then generate high-temperature plasma torch, with lazy
Property gas be carrier, powder is sent into plasmatorch, large particle surface is made to melt, keeps little particle integrally fused, formed molten drop；It is molten
Drop is shunk because of surface tension to be formed spherical, under high temperature gradient, is quickly cooled down, will cooling spherical shape be fixed up to
Obtain spheric granules；Powder after spheroidising has the following advantages：1, powder surface area minimum, any surface finish, therefore
Powder has many advantages, such as Packing character and good fluidity, is not easy to bridge；2, accumulation is closely knit, and loading can reach highest, and porosity is low,
And there is fabulous dimensional reproducibility, product quality to stablize for filling uniformity, the part prepared；3, isotropism is good, answers
Stress-strain is uniform, granule strength is big, therefore product stress concentration is small, and intensity is high；4, powder friction coefficient is small, at mould mobility
It is good, it is also small to the abrasion of mold；5, powder contact point in solid-phase sintering is more, and sintering shrinkage is small, and the performances such as intensity are better than angle-style
Powder；But spheroidizing of powder technology in the prior art causes powder nodularization effect since the plasmatorch stability of use is poor
It is unstable.
The Chinese utility model patent of Publication No. CN203678372U discloses a kind of utilize on July 2nd, 2014 and hands over
It flows the equipment and system of plasma spheroidization powder, including arc chamber, inductance coil and is connected to the bottom of the arc chamber
Heat-exchanging chamber；The arc chamber includes head cover, stretches into the indoor powder feed pipe of the electric discharge and be wound with the inductance coil
Cylindrical discharge room side wall；The heat-exchanging chamber includes heat-exchanging chamber side wall and the spherical powder positioned at the heat-exchanging chamber bottom
Outlet；It is equipped with working gas air inlet pipe in the arc chamber, protective gas air inlet pipe, institute are equipped on the arc chamber side wall
It states in head cover, arc chamber side wall and heat-exchanging chamber side wall and is equipped with cooling chamber.
Utility model content
For the defect of plasma spheroidization effect difference existing in the prior art, the utility model discloses a kind of centers to send
Material formula laminar flow plasma spheroidization device, can effectively reinforce the nodularization effect of dusty material using the utility model.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of center feeding type laminar flow plasma spheroidization device, includes the retort and collecting tank of interconnection, feature
It is：It is provided with cooling water cavity in the retort, cooling water intake and cooling water outlet are provided on cooling water cavity；Institute
It states and is provided with laminar flow plasma nozzle and feed pipe in retort, the feed pipe is connected with laminar flow plasma nozzle；The layer
Stream plasma nozzle is also associated with protection letter shoot；The bottom of retort and collecting tank is both provided with discharge port, on discharge port
It is hinged with sealing plate；Protection gas recovery tube is provided at the top of the collecting tank.
The protection gas recovery tube is set by protecting gas temporary storage tank to be connected with protection gas entrance in the protection gas temporary storage tank
It is equipped with blowdown pipe.
It is provided with sieves and negative-pressure air fan on the protection gas recovery tube.
The opening of the discharge port is horizontal direction；It is provided with clump weight on the sealing plate.
It is additionally provided with cooling water outlet and cooling water water inlet on the laminar flow plasma nozzle.
The sieves front end is additionally provided with discharge nozzle.
Compared with prior art, the utility model has the advantages that：
1, it is provided with laminar flow plasma nozzle and feed pipe in the retort of the utility model, the feed pipe and laminar flow
Plasma nozzle is connected, and guarantees the center that material is directly sent to laminar flow plasmatorch, on the one hand improves to object
The treatment temperature of material, enables material fully to be heated, and improves the quality of nodularization；On the other hand material is made to be filled with plasmatorch
Tap is touched, to improve the Oxygen potential of material.
2, protection gas temporary storage tank, the protection are connected between the protection gas recovery tube of the utility model and protection gas entrance
It is provided with blowdown pipe in gas temporary storage tank, ensures the continuity of system work, avoids the occurrence of the powder because of caused by protection unsaturated vapor
Oxidation improves spheroidizing quality.
3, it is provided with sieves and negative-pressure air fan on the protection gas recovery tube of the utility model, improves the reflux speed of protection gas
Degree improves system treatment effeciency；It will protect to be difficult to settle nodularization powder in gas by sieves simultaneously and be filtered collection, avoid
Nodularization powder is re-circulated in retort and causes harmful effect to non-nodularization powder.
4, the discharge port of the utility model is the opening towards horizontal direction, and clump weight, negative pressure wind are provided on sealing plate
Machine forms negative pressure in retort and collecting tank, when material in discharge port add up to a certain extent when, the active force of material and
Negative pressure overcomes the unlatching of the gravity of atmospheric pressure and sealing plate realization sealing plate together, to realize automatic discharging and close work(
Energy；It can change the unlatching threshold values of sealing plate by replacing different clump weights simultaneously, it is easy to use.
5, the utility model is provided with cooling water outlet and cooling water water inlet on laminar flow plasma nozzle, ensures layer
The normal work of plasma nozzle is flowed, working efficiency is improved.
6, the utility model is provided with drainage conduit in the front end of sieves, facilitates the powder discharge for filtering out sieves,
Protection gas recycling blockage is avoided, ensures the stability and continuity of system work.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Reference numeral：1, retort, 2, collecting tank, 3, cooling water cavity, 4, cooling water intake, 5, cooling water outlet,
6, laminar flow plasma nozzle, 7, feed pipe, 8, protection letter shoot, 9, discharge port, 10, sealing plate, 11, protection gas recovery tube,
12, gas temporary storage tank is protected, 13, blowdown pipe, 14, sieves, 15, negative-pressure air fan, 16, drainage conduit, 17, clump weight.
Specific embodiment
The utility model will be described further by specific embodiment below：
Embodiment 1
Preferred embodiment of the present embodiment as the utility model, it discloses a kind of center feeding type laminar flow plasmaspheres
Makeup is set, including retort 1 and collecting tank 2, is interconnected by pipeline between the retort 1 and collecting tank 2；The reaction
It is provided with cooling water cavity 3 on the tank skin of tank 1, cooling water intake 4 and cooling water outlet 5 are provided on the cooling water cavity 3；
The top of the retort 1 is provided with laminar flow plasma nozzle 6 and feed pipe 7, the outlet end of the feed pipe 7 and laminar flow etc. from
Sub- nozzle 6 is connected, and protection letter shoot 8 is also associated on laminar flow plasma nozzle 6；The bottom of the retort 1 and collecting tank 2
It is both provided with the discharge port 9 that opening direction is horizontal direction, the wherein discharge port 9 of 1 bottom of retort is used for the collection of corase meal,
And the discharge port 9 of 2 bottom of collecting tank is then used to collect fine powder, and sealing plate 10 is hinged on the discharge port 9；The collection
The top of tank 2 is provided with protection gas recovery tube 11.
Embodiment 2
Preferred embodiment of the present embodiment as the utility model, it discloses a kind of center feeding type laminar flow plasmaspheres
Makeup is set, including retort 1 and collecting tank 2, is interconnected by pipeline between the retort 1 and collecting tank 2；The reaction
It is provided with cooling water cavity 3 on the tank skin of tank 1, cooling water intake 4 and cooling water outlet 5 are provided on the cooling water cavity 3；
The top of the retort 1 is provided with laminar flow plasma nozzle 6 and feed pipe 7, the outlet end of the feed pipe 7 and laminar flow etc. from
Sub- nozzle 6 is connected, and protection letter shoot 8 is also associated on laminar flow plasma nozzle 6；The bottom of the retort 1 and collecting tank 2
It is both provided with the discharge port 9 that opening direction is horizontal direction, the wherein discharge port 9 of 1 bottom of retort is used for the collection of corase meal,
And the discharge port 9 of 2 bottom of collecting tank is then used to collect fine powder, and sealing plate 10 is hinged on the discharge port 9；The collection
The top of tank 2 is provided with protection gas recovery tube 11, and protection gas recovery tube 11 is connected with protection gas temporary storage tank 12, protects gas temporary storage tank
12 are connected with protection gas recovery tube 11；It is additionally provided with blowdown pipe 13 in the protection gas temporary storage tank 12；The laminar flow plasma spray
Cooling water outlet 5 and cooling water intake 4 are additionally provided on mouth 6.
Embodiment 3
Most preferred embodiment of the present embodiment as the utility model, it discloses a kind of center feeding type laminar flow plasmaspheres
Makeup is set, and concrete structure passes through as shown in Figure 1, including retort 1 and collecting tank 2 between the retort 1 and collecting tank 2
Pipeline is interconnected；Cooling water cavity 3 is provided on the tank skin of the retort 1, be provided on the cooling water cavity 3 cooling water into
The mouth of a river 4 and cooling water outlet 5；The top of the retort 1 is provided with laminar flow plasma nozzle 6 and feed pipe 7, the feeding
The outlet end of pipe 7 is connected with laminar flow plasma nozzle 6, and protection letter shoot 8 is also associated on laminar flow plasma nozzle 6；It is described
The bottom of retort 1 and collecting tank 2 is both provided with the discharge port 9 that opening direction is horizontal direction, and wherein retort 1 bottom goes out
Material mouth 9 is used for the collection of corase meal, and the discharge port 9 of 2 bottom of collecting tank is then used to collect fine powder, on the discharge port 9
It is hinged with sealing plate 10, clump weight 17 is provided on sealing plate 10；The top of the collecting tank 2 is provided with protection gas recovery tube
11, protection gas recovery tube 11 is connected with protection gas temporary storage tank 12, and protection gas temporary storage tank 12 is connected with protection gas recovery tube 11；It is described
It is additionally provided with blowdown pipe 13 in protection gas temporary storage tank 12；11 upper edge gas flow direction of the protection gas recovery tube is disposed with
Drainage conduit 16, sieves 14 and negative-pressure air fan 15；Cooling water outlet 5 and cold is additionally provided on the laminar flow plasma nozzle 6
But water water inlet 4；
Material is sent directly by the utility model by way of being directly connected to feed pipe with laminar flow plasma nozzle
The center of laminar flow plasmatorch both ensure that the temperature during material nodularization, while also improve the Oxygen potential of material, significantly
Improve the spheroidizing quality of material；The utility model makes to keep one in retort and collecting tank by the effect of negative-pressure air fan simultaneously
Fixed negative pressure realizes that the automatic of discharge port is opened after material adds up to a certain extent in tank under the gravity of material itself
It closes, reduces the frequency for opening discharge port, a large amount of leakages and a large amount of of air for avoiding protection gas are mixed into, and reduce nodularization powder
The probability that end is aoxidized both improves spheroidizing quality, while can also reduce production cost, improves production efficiency.
Claims (6)
1. a kind of center feeding type laminar flow plasma spheroidization device, includes the retort of interconnection（1）And collecting tank（2）,
It is characterized in that：The retort（1）On be provided with cooling water cavity（3）, cooling water cavity（3）On be provided with cooling water intake（4）
And cooling water outlet（5）；The retort（1）On be provided with laminar flow plasma nozzle（6）And feed pipe（7）, the feeding
Pipe（7）With laminar flow plasma nozzle（6）It is connected；The laminar flow plasma nozzle（6）It is also associated with protection letter shoot（8）；Instead
Answer tank（1）And collecting tank（2）Bottom be both provided with discharge port（9）, discharge port（9）On be hinged with sealing plate（10）；The receipts
Collect tank（2）Top is provided with protection gas recovery tube（11）.
2. a kind of center feeding type laminar flow plasma spheroidization device according to claim 1, it is characterised in that：The protection
Gas recovery tube（11）By protecting gas temporary storage tank（12）With protection letter shoot（8）It is connected, the protection gas temporary storage tank（12）On
It is provided with blowdown pipe（13）.
3. a kind of center feeding type laminar flow plasma spheroidization device according to claim 1, it is characterised in that：The protection
Gas recovery tube（11）On be provided with sieves（14）And negative-pressure air fan（15）.
4. a kind of center feeding type laminar flow plasma spheroidization device according to claim 3, it is characterised in that：The filtering
Sieve（14）Front end is additionally provided with drainage conduit（16）.
5. a kind of center feeding type laminar flow plasma spheroidization device according to claim 1, it is characterised in that：The discharging
Mouthful（9）Opening be horizontal direction；The sealing plate（10）On be provided with clump weight（17）.
6. a kind of center feeding type laminar flow plasma spheroidization device according to claim 1, it is characterised in that：The laminar flow
Plasma nozzle（6）On be additionally provided with cooling water outlet（5）And cooling water intake（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721471302.2U CN207783239U (en) | 2017-11-07 | 2017-11-07 | A kind of center feeding type laminar flow plasma spheroidization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721471302.2U CN207783239U (en) | 2017-11-07 | 2017-11-07 | A kind of center feeding type laminar flow plasma spheroidization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207783239U true CN207783239U (en) | 2018-08-28 |
Family
ID=63233053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721471302.2U Active CN207783239U (en) | 2017-11-07 | 2017-11-07 | A kind of center feeding type laminar flow plasma spheroidization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207783239U (en) |
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2017
- 2017-11-07 CN CN201721471302.2U patent/CN207783239U/en active Active
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