A kind of magnesium-silicide spiral cooling device
Technical field
The present invention relates to a kind of cooling apparatus that is used 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 siliceous nanometer 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 technology.
In preparation magnesium silicide process, the silicon reactive magnesium is a strong exothermal reaction, and the magnesium silicide temperature of generation for helping 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
Technical problem to be solved by this invention provides a kind of cooling efficiency height, 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 is adopted: 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 made up 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, first end of described water coolant ingress pipe is positioned at outside first end of described tubular shaft, 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 constitutes water coolant backhaul passage, first end of described water coolant backhaul passage is connected with the water coolant delivery line, second end of described tubular shaft is connected with described motor, and outer the setting gradually from its second end to the first end of described water cooler is useful on the front end tube that the charging of high temperature silication magnesium dust is provided in described water cooler, be used for high temperature silication magnesium dust is carried out the multistage cooling water jecket of refrigerative piecemeal and is used to export the terminal tube 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 second end of described one-level cooling water jecket.
First end near described water cooler in the described terminal tube is provided with the shredding unit that is used to pulverize the magnesium silicide powder.
Described front end tube comprises the charging adapter mouth that is arranged at the outer front end tube main body of described water cooler and is arranged at the top of described front end tube 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 tube comprises the end tube 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.
First end of described water cooler is connected with the shielding gas ingress pipe that is connected with described water cooler and is used to import shielding gas; the position of described shielding gas ingress pipe is corresponding with the position of described terminal tube; second end of described water cooler is connected with the shielding gas delivery line that is connected with described water cooler and is used to derive shielding gas, and the position of described shielding gas delivery line is between described front end tube 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 of the temperature that is used to measure 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 the cooling efficiency height, 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, the quality height;
3), by in water cooler, charging into shielding gas (rare gas element), with secluding air, reach protection high temperature silication magnesium dust and do not contact with air, guarantee its purpose of safety;
4), by a water coolant ingress pipe is set in tubular shaft, in the water coolant ingress pipe, feed the 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 multistage cooling water jecket of refrigerative piecemeal, 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 the shredding unit that is used to pulverize the magnesium silicide powder in the tube endways, effectively guaranteed the epigranular of magnesium silicide, what help that follow-up silane reacts effectively carries out.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is a partial cutaway schematic of the present invention;
Fig. 3 is that the A-A of Fig. 1 is to diagrammatic cross-section.
Embodiment
Embodiment describes 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 made up 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, first end of water coolant ingress pipe 3-3 is positioned at outside first end of tubular shaft 3-1, 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 constitutes water coolant backhaul passage 3-5, first end of water coolant backhaul passage 3-5 is connected with water coolant delivery line 3-4, second end of tubular shaft 3-1 is connected with motor 1, water cooler 2 outer setting gradually from its second end to the first end are useful on the front end tube 4 that the charging of high temperature silication magnesium dust is provided in water cooler 2, be used for high temperature silication magnesium dust is carried out refrigerative level Four cooling water jecket piecemeal and is used to export the terminal tube 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 second end of one-level cooling water jecket 5.
In this specific embodiment, first end near water cooler 2 is provided with the shredding unit 9-9 that is used to pulverize the magnesium silicide powder in the tube 9 endways, and shredding unit 9-9 adopts prior art, as adopts existing electronic crusher.
In this specific embodiment, front end tube 4 comprises that being sheathed on water cooler 2 outer front end tube main body 4-1 takes over a mouthful 4-2 with the charging that is arranged at the top of front end tube 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 tube 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; 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 to import shielding gas; the position of shielding gas ingress pipe 2-1 is corresponding with the position of terminal tube 9; 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 to derive shielding gas, and the position of shielding gas delivery line 2-2 is between front end tube 4 and one-level cooling water jecket 5.Feed shielding gas (rare gas element) continuously 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 no air in the water cooler, 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 of the temperature that is used to measure 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 refrigerative temperature at different levels by thermometer, and purpose is too fast in order to prevent to cool off, and guarantees magnesium silicide powder Su Song.
At this, can fixed support 19 be set at water cooler 2, be used to support this refrigerating unit.
Working process of the present invention is: the charging of front end tube 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, the spiral propeller promotion magnesium silicide powder that is arranged in the water cooler advances to first end of water cooler from second end of water cooler, when the magnesium silicide powder advances to the position of one-level cooling water jecket correspondence, the one-level cooling water jecket imports water coolant by its one-level water coolant ingress pipe the magnesium silicide powder is cooled to about 350 ℃ in one-level cooling water jecket main body, when the magnesium silicide powder advances to the position of secondary cooling water jecket correspondence, the secondary cooling water jecket imports water coolant by its secondary water coolant ingress pipe the magnesium silicide powder is cooled to about 230 ℃ in secondary cooling water jecket main body, when the magnesium silicide powder advances to the position of three grades of cooling water jecket correspondences, three grades of cooling water jeckets import water coolant by its three grades of water coolant ingress pipes the magnesium silicide powder are cooled to about 150 ℃ in three grades of cooling water jecket main bodys, when the magnesium silicide powder advances to the position of level Four cooling water jecket correspondence, the level Four cooling water jecket imports water coolant by its level Four water coolant ingress pipe the magnesium silicide powder is cooled to about 100 ℃ in level Four cooling water jecket main body, when the magnesium silicide powder advances to the position of terminal tube, 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 lowered by segmentation, effectively guaranteed the quality of cooling performance, cooling efficiency and cooling back magnesium silicide powder.