A kind of magnesium-silicide spiral cooling device
Technical field
The present invention relates to a kind of cooling apparatus for the cooling down high-temperature magnesium silicide, especially relate to a kind of magnesium-silicide spiral cooling device.
Background technology
Magnesium silicide is a kind of important industrial raw material, it is widely used in preparing silane gas, polysilicon, amorphous silicon membrane, stupalith and silicon-containing nano powder etc., and semi-conductor microelectronics production, solar cell production etc. are had more and more important effect.Exploitation is efficient, the industrial synthesis of high quality and less energy-consumption is the developing direction of magnesium silicide technique.
In preparation magnesium silicide process, the silicon reactive magnesium is a strong exothermal reaction, and the magnesium silicide temperature of generation for being conducive to following process, needs it is cooled off about 500 ℃.Traditional intermittent reaction mode of production is after the silicon reactive magnesium finishes, and make the reactor naturally cooling, thereby reach the purpose of cooling magnesium silicide, but the cooling efficiency of this method of cooling is very low.
Summary of the invention
It is high that technical problem to be solved by this invention provides a kind of cooling efficiency, and the magnesium-silicide spiral cooling device that cooled magnesium silicide does not lump, quality is high.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of magnesium-silicide spiral cooling device, it is characterized in that comprising motor, water cooler and spiral propeller, described spiral propeller is arranged in the described water cooler, described spiral propeller mainly is comprised of tubular shaft and the screw-blade that is arranged on the described tubular shaft, be provided with the blind plate that is connected with the inwall of described tubular shaft in the described tubular shaft, be provided with the water coolant ingress pipe in the described tubular shaft, the first end of described water coolant ingress pipe is positioned at outside the first end of described tubular shaft, the second end of described water coolant ingress pipe does not contact near described blind plate and with described blind plate, gap between the outer wall of the inwall of described tubular shaft and described water coolant ingress pipe consists of water coolant backhaul passage, the first end of described water coolant backhaul passage is connected with the water coolant delivery line, the second end of described tubular shaft is connected with described motor, and outer the setting gradually from its second end to first end of described water cooler is useful on the front end cylinder that the charging of high temperature silication magnesium dust is provided in the described water cooler, be used for the multistage cooling water jecket that high temperature silication magnesium dust is cooled off piecemeal and be used for exporting the terminal cylinder of low temperature silication magnesium dust discharging.
Described water cooler is outside equipped with the described cooling water jecket of level Four, is respectively one-level cooling water jecket, secondary cooling water jecket, three grades of cooling water jeckets and level Four cooling water jecket.
The position of described blind plate is corresponding with the position of the second end of described one-level cooling water jecket.
First end near described water cooler in the described terminal cylinder is provided with for the shredding unit of pulverizing the magnesium silicide powder.
Described front end cylinder comprises the charging adapter mouth that is arranged at the outer front end cylinder main body of described water cooler and is arranged at the top of described front end cylinder main body and is connected with described water cooler; The one-level water coolant delivery line that described one-level cooling water jecket comprises one-level cooling water jecket main body, be arranged at the below of described one-level cooling water jecket main body and the one-level water coolant ingress pipe that is connected with described one-level cooling water jecket main body and the top that is arranged at described one-level cooling water jecket main body and be connected with described one-level cooling water jecket main body; The secondary water coolant delivery line that described secondary cooling water jecket comprises secondary cooling water jecket main body, be arranged at the below of described secondary cooling water jecket main body and the secondary water coolant ingress pipe that is connected with described secondary cooling water jecket main body and the top that is arranged at described secondary cooling water jecket main body and be connected with described secondary cooling water jecket main body; Three grades of water coolant delivery lines that described three grades of cooling water jeckets comprise three grades of cooling water jecket main bodys, be arranged at the below of described three grades of cooling water jecket main bodys and three grades of water coolant ingress pipes that are connected with described three grades of cooling water jecket main bodys and the top that is arranged at described three grades of cooling water jecket main bodys and be connected with described three grades of cooling water jecket main bodys; The level Four water coolant delivery line that described level Four cooling water jecket comprises level Four cooling water jecket main body, be arranged at the below of described level Four cooling water jecket main body and the level Four water coolant ingress pipe that is connected with described level Four cooling water jecket main body and the top that is arranged at described level Four cooling water jecket main body and be connected with described level Four cooling water jecket main body; Described terminal cylinder comprises the end cylinder main body that is arranged at outside the described water cooler and is arranged at the below of a described terminal main body and the discharge barrel that is connected with described water cooler.
The first end of described water cooler is connected with the shielding gas ingress pipe that is connected with described water cooler and is used for importing shielding gas; the position of described shielding gas ingress pipe is corresponding with the position of described terminal cylinder; the second end of described water cooler is connected with the shielding gas delivery line that is connected with described water cooler and is used for deriving shielding gas, and the position of described shielding gas delivery line is between described front end cylinder and described one-level cooling water jecket.
Described shielding gas is argon gas or hydrogen.
Be connected with the temperature tube that a plurality of and described water cooler is connected on the described water cooler, described temperature tube is connected with the thermometer be used to the temperature of measuring the magnesium silicide powder in the described water cooler, and the position of each described temperature tube lays respectively at the rear, position of described one-level cooling water jecket, described secondary cooling water jecket, described three grades of cooling water jeckets and described level Four cooling water jecket.
Compared with prior art, the invention has the advantages that:
1), by in conjunction with spiral propeller and water cooler, can realize the continuous cooling of high temperature silication magnesium dust, and cooling efficiency is high, help to realize the synthetic continuously of magnesium silicide, thereby can effectively realize the scale operation of silane by magnesium silicide method;
2), high temperature silication magnesium dust advances under the stirring of spiral propeller, strengthened heat transfer, makes the cooling of magnesium silicide powder evenly, cooling rate is steady, gentle expansion condition is provided effectively, thereby has guaranteed the reactive behavior of magnesium silicide, made that cooled magnesium silicide does not lump, quality is high;
3), by in water cooler, being filled with shielding gas (rare gas element), with secluding air, reach protection high temperature silication magnesium dust and do not contact with air, guarantee the purpose that it is safe;
4), by a water coolant ingress pipe is set in tubular shaft, in the water coolant ingress pipe, pass into mobile water coolant, can guarantee that tubular shaft is in lower temperature environment, thereby effectively guarantee the normal operation of spiral propeller;
5), by adopting the piecemeal multistage cooling water jecket of cooling, high temperature silication magnesium dust is cooled off indirectly, avoided using expensive rare gas element directly to cool off the magnesium silicide powder;
6), by being provided with for the shredding unit of pulverizing the magnesium silicide powder in the cylinder endways, effectively guaranteed the epigranular of magnesium silicide, what be conducive to that follow-up silane reacts effectively carries out.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is partial cutaway schematic of the present invention;
Fig. 3 is that the A-A of Fig. 1 is to diagrammatic cross-section.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
A kind of magnesium-silicide spiral cooling device that the present invention proposes, as shown in the figure, it comprises motor 1, water cooler 2 and spiral propeller 3, spiral propeller 3 is arranged in the water cooler 2, spiral propeller 3 mainly is comprised of tubular shaft 3-1 and the screw-blade 3-2 that is arranged on the tubular shaft 3-1, be provided with the blind plate (not shown) that is connected with the inwall of tubular shaft 3-1 in the tubular shaft 3-1, be provided with water coolant ingress pipe 3-3 in the tubular shaft 3-1, the first end of water coolant ingress pipe 3-3 is positioned at outside the first end of tubular shaft 3-1, the second end of water coolant ingress pipe 3-3 does not contact near blind plate and with blind plate, gap between the outer wall of the inwall of tubular shaft 3-1 and water coolant ingress pipe 3-3 consists of water coolant backhaul passage 3-5, the first end of water coolant backhaul passage 3-5 is connected with water coolant delivery line 3-4, the second end of tubular shaft 3-1 is connected with motor 1, outer the setting gradually from its second end to first end of water cooler 2 is useful on the front end cylinder 4 that the charging of high temperature silication magnesium dust is provided in the water cooler 2, be used for the level Four cooling water jecket that high temperature silication magnesium dust is cooled off piecemeal and be used for exporting the terminal cylinder 9 of low temperature silication magnesium dust discharging, the level Four cooling jacket is respectively one-level cooling water jecket 5, secondary cooling water jecket 6, three grades of cooling water jeckets 7 and level Four cooling water jecket 8, the position of blind plate is corresponding with the position of the second end of one-level cooling water jecket 5.
In this specific embodiment, cylinder 9 interior first ends near water cooler 2 are provided with for the shredding unit 9-9 that pulverizes the magnesium silicide powder endways, and shredding unit 9-9 adopts prior art, as adopts existing electronic crusher.
In this specific embodiment, front end cylinder 4 comprises that being sheathed on water cooler 2 outer front end cylinder main body 4-1 takes over a mouthful 4-2 with the charging that is arranged at the top of front end cylinder main body 4-1 and is connected with water cooler 2; The one-level water coolant delivery line 5-3 that one-level cooling water jecket 5 comprises one-level cooling water jecket main body 5-1, be arranged at the below of one-level cooling water jecket main body 5-1 and the one-level water coolant ingress pipe 5-2 that is connected with one-level cooling water jecket main body 5-1 and the top that is arranged at one-level cooling water jecket main body 5-1 and be connected with one-level cooling water jecket main body 5-1; The secondary water coolant delivery line 6-3 that secondary cooling water jecket 6 comprises secondary cooling water jecket main body 6-1, be arranged at the below of secondary cooling water jecket main body 6-1 and the secondary water coolant ingress pipe 6-2 that is connected with secondary cooling water jecket main body 6-1 and the top that is arranged at secondary cooling water jecket main body 6-1 and be connected with secondary cooling water jecket main body 6-1; Three grades of water coolant delivery line 7-3 that three grades of cooling water jeckets 7 comprise three grades of cooling water jecket main body 7-1, be arranged at the below of three grades of cooling water jecket main body 7-1 and three grades of water coolant ingress pipe 7-2 that are connected with three grades of cooling water jecket main body 7-1 and the top that is arranged at three grades of cooling water jecket main body 7-1 and be connected with three grades of cooling water jecket main body 7-1; The level Four water coolant delivery line 8-3 that level Four cooling water jecket 8 comprises level Four cooling water jecket main body 8-1, be arranged at the below of level Four cooling water jecket main body 8-1 and the level Four water coolant ingress pipe 8-2 that is connected with level Four cooling water jecket main body 8-1 and the top that is arranged at level Four cooling water jecket main body 8-1 and be connected with level Four cooling water jecket main body 8-1; Terminal cylinder 9 comprises the terminal main body 9-1 that is arranged at outside the water cooler 2 and is arranged at the below of terminal main body 9-1 and the discharge barrel 9-2 that is connected with water cooler 2.
In this specific embodiment; the first end of water cooler 2 is connected with the shielding gas ingress pipe 2-1 that is connected with water cooler 2 and is used for importing shielding gas; the position of shielding gas ingress pipe 2-1 is corresponding with the position of terminal cylinder 9; the second end of water cooler 2 is connected with the shielding gas delivery line 2-2 that is connected with water cooler 2 and is used for deriving shielding gas, and the position of shielding gas delivery line 2-2 is between front end cylinder 4 and one-level cooling water jecket 5.Pass into continuously shielding gas (rare gas element) by shielding gas ingress pipe 2-1, not only play the function of removing the part heat, and can effectively discharge and secluding air, guarantee that water cooler is interior without air, thereby guaranteed the safety of magnesium silicide powder.At this, shielding gas can adopt argon gas or hydrogen.Can certainly it be worked under vacuum state by whole device is vacuumized, but the bleed possibility of whole device of air is just arranged like this, very high to the requirement meeting of whole device.
In this specific embodiment, be connected with four temperature tube T1~T4 that are connected with water cooler 2 on the water cooler 2, each temperature tube is connected with the thermometer for the temperature of measuring the magnesium silicide powder in the water cooler, and the position of each temperature tube lays respectively at the rear, position of one-level cooling water jecket 5, secondary cooling water jecket 6, three grades of cooling water jeckets 7 and level Four cooling water jecket 8.This refrigerating unit is supervised the temperature of coolings at different levels by thermometer, purpose is too fast in order to prevent from cooling off, and guarantees magnesium silicide powder Su Song.
At this, can fixed support 19 be set at water cooler 2, be used for supporting this refrigerating unit.
Working process of the present invention is: the charging of front end cylinder is taken over mouth and is accepted the high temperature silication magnesium dust that the magnesium silicide reaction unit generates, high temperature silication magnesium dust is taken over mouth by charging and is entered in the water cooler, being arranged at spiral propeller in the water cooler promotes the magnesium silicide powder first end to water cooler advances from the second end of water cooler, when the magnesium silicide powder advances to position corresponding to one-level cooling water jecket, the one-level cooling water jecket imports water coolant in the one-level cooling water jecket main body by its one-level water coolant ingress pipe the magnesium silicide powder is cooled to about 350 ℃, when the magnesium silicide powder advances to position corresponding to secondary cooling water jecket, the secondary cooling water jecket imports water coolant in the secondary cooling water jecket main body by its secondary water coolant ingress pipe the magnesium silicide powder is cooled to about 230 ℃, when the magnesium silicide powder advances to position corresponding to three grades of cooling water jeckets, three grades of cooling water jeckets import water coolant by its three grades of water coolant ingress pipes in three grades of cooling water jecket main bodys the magnesium silicide powder are cooled to about 150 ℃, when the magnesium silicide powder advances to position corresponding to level Four cooling water jecket, the level Four cooling water jecket imports water coolant in the level Four cooling water jecket main body by its level Four water coolant ingress pipe the magnesium silicide powder is cooled to about 100 ℃, when the magnesium silicide powder advances to the position of terminal cylinder, shredding unit carries out further thinning processing to the magnesium silicide powder, and by discharge barrel output low temperature silication magnesium dust.The high temperature magnesium silicide by the cooling water jeckets at different levels of this refrigerating unit after its temperature be segmented and lower, effectively guaranteed the quality of magnesium silicide powder after cooling performance, cooling efficiency and the cooling.