CN210529010U

CN210529010U - Rotor mechanism for refining and degassing molten aluminum

Info

Publication number: CN210529010U
Application number: CN201920824516.6U
Authority: CN
Inventors: 庄景巍; 张瑞敏; 葛道凯; 颜奇辉; 黄君之; 郑小斌; 黎强; 庆毅
Original assignee: Shenzhen Altech Novel Alloy Co ltd
Current assignee: Shenzhen Altech Novel Alloy Co ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-05-15
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to a rotor mechanism for refining and degassing molten aluminum, which comprises a motor, a motor mounting seat, an inner sleeve, an outer cylinder, a transmission shaft, a stator, a rotor, a stator sleeve and a turntable, wherein the motor and the outer cylinder are arranged at the upper end and the lower end of the motor mounting seat, the inner sleeve is arranged in an accommodating cavity of the outer cylinder, the inner sleeve is connected with a flange at the bottom of the outer sleeve, the transmission shaft penetrates through the inner cavity of the inner sleeve and is connected with a rotating shaft of the motor through a coupler, the lower end of the transmission shaft is connected with the rotor, the rotor is sleeved in the inner cavity of the stator, the stator is arranged at the bottom of the inner sleeve, the tail end of the stator is connected with the stator sleeve, the turntable is arranged at the bottom of the stator sleeve, the tail end of the rotor is fixedly connected with the turntable, the rotor is provided with a spiral air groove for conveying inert gas, a ventilation gap is arranged between the stator sleeve and the turntable, the inner sleeve is provided with an air cavity, and an air inlet and an air outlet of the spiral air groove are respectively communicated with the air cavity and the ventilation gap. The rotor mechanism has simple and reliable structure, long service life and good degassing effect on aluminum liquid.

Description

Rotor mechanism for refining and degassing molten aluminum

Technical Field

The utility model relates to an online refining system equipment technical field of aluminium melt especially relates to a rotor mechanism for refining degassing of aluminium liquid.

Background

In the smelting process of aluminum and aluminum alloy, hydrogen elements exist in the aluminum melt due to the introduction of air, organic matters in the production process and the like, and in the subsequent casting and cooling process, the hydrogen elements are separated out from the aluminum in the form of hydrogen bubbles to form air holes, so that the product quality is seriously influenced. Therefore, after the smelting is completed, the aluminum melt needs to be refined before casting. The refining process is mainly completed by a rotor mechanism in an online refining system, the core part of the technology is that one end of the rotor is provided with a rotary nozzle, namely the rotor, the rotor is driven by a transmission rotating shaft to rotate at high speed in the aluminum liquid at about 750 ℃, inert gas is sprayed out along the rotation of the bottom end of the rotor, the formed bubbles are scattered into a large number of small bubbles due to the high-speed rotation of the rotor, hydrogen in the aluminum melt is attached to the small bubbles to be separated out into hydrogen, and meanwhile, impurity particles in the aluminum melt are adsorbed to float up to the liquid level together, so that the purpose of degassing (removing hydrogen) purification is achieved.

The main shaft of the rotor mechanism is characterized in that the temperature of the working environment is high, the heat of aluminum liquid can be transmitted to a rotating shaft connected with the main shaft through the rotor in the working process of the rotor mechanism, so that parts are damaged, the main shaft and a motor are in lateral transmission generally, the rotating shaft is greatly vibrated due to the mechanism and tolerance in transmission, the service life of the main shaft is shortened, the rotor connected with the main shaft is vibrated along with the main shaft, the caused liquid level is fluctuated, and the degassing effect of the rotor is influenced. In the side transmission mode, a bearing used for supporting the rotor to rotate can be locked due to the temperature rise of the rotating shaft, and the stability of the equipment is affected.

The material for manufacturing the rotor generally needs to have the properties of high temperature resistance, oxidation resistance, aluminum liquid corrosion resistance, machinability, thermal shock resistance, certain mechanical strength and the like. At the present technical level, most of aluminum melt degassing rotors are made of graphite materials, because the graphite materials have excellent thermal shock resistance and can be machined, aluminum liquid does not infiltrate graphite, but the aluminum liquid cannot resist high-temperature oxidation, which is the fatal weakness of the graphite materials. The practice of mass use shows that: when the graphite rotor works, the part immersed below the aluminum liquid level is not contacted with oxygen, almost no oxidation reaction occurs, only aluminum liquid is washed, and the material loss is small; in the part above the aluminum liquid surface, although the part is contacted with oxygen and is oxidized and ablated, aluminum liquid is not washed, and the ablation speed is not high; the contact position of the graphite rotor and the liquid surface of the aluminum liquid leads to serious graphite oxidation due to high temperature and a certain amount of oxygen, and meanwhile, the aluminum liquid washes the surface of the rotor at a high speed when the graphite rotor rotates, so that the liquid surface position of the graphite rotor is quickly thinned and broken to be scrapped. The service life of a graphite rotor which is normally used is 15 days, the replacement of the graphite rotor not only increases the labor operation intensity and sometimes needs to interrupt the production rhythm, but also increases the production cost, so the service life of the rotor needs to be prolonged.

Research shows that the smaller the size of the bubbles of the inert gas is, the slower the floating speed in the melt is, so that the longer the retention time in the melt is, the better the degassing effect can be obtained by fully diffusing the hydrogen in the melt into the bubbles of the inert gas. Therefore, how to reduce the size of the bubbles, increase the total surface area of the bubbles, and prolong the residence time of the bubbles in the melt, so as to improve the uniformity of the bubble distribution and expand the action range of the bubbles becomes the research direction of the degassing rotor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, compact and the good rotor mechanism for the concise degasification of aluminium liquid of degasification performance to solve present rotor degassing effect unstability, pivot and the not high defect of graphite rotor life-span.

In order to achieve the above object, the technical solution adopted by the present invention is a rotor mechanism for refining and degassing aluminum liquid, comprising a transmission motor, a motor mounting seat, an inner sleeve, an outer sleeve, a transmission shaft, a stator, a rotor, a stator sleeve, and a turntable, wherein the transmission motor and the outer sleeve are respectively mounted at the upper end and the lower end of the motor mounting seat, the inner sleeve is sleeved in a containing cavity of the outer sleeve, the inner sleeve is connected with the bottom of the outer sleeve through a flange, the transmission shaft is sleeved in an inner cavity of the inner sleeve, the upper end of the transmission shaft is connected with a rotating shaft of the transmission motor through a coupling, the lower end of the transmission shaft is connected with the rotor in a transmission manner, the rotor sleeve is disposed in an inner cavity of the stator, the stator is fixedly mounted at the bottom of the inner sleeve, the tail end of the stator is fixedly connected with the stator sleeve, the turntable is disposed at the bottom of the, a ventilation gap is arranged between the stator sleeve and the rotary table, an air cavity is arranged on the inner sleeve, concentric vent holes are formed in the outer cylinder and the inner sleeve and communicated with the air cavity, an air transmission joint is arranged in each vent hole, inert gas or refining agent gas mixed with the inert gas is introduced into the air cavity through the air transmission joint, an air inlet of the spiral air groove is communicated with the air cavity, and an air outlet of the spiral air groove is communicated with the ventilation gap.

As an improvement of the present invention, the spiral direction of the spiral gas groove is kept consistent with the rotation direction of the rotor, the gas inlet of the spiral gas groove is located at the top end of the rotor, and the gas outlet of the spiral gas groove is located at the tail end of the rotor.

As an improvement of the utility model, the size of the ventilation gap between the stator sleeve and the turntable is 1.0mm-3.5 mm.

As an improvement of the utility model, an assembly gap is arranged between the rotor and the stator, and the size of the assembly gap after the rotor and the stator are assembled is 0.1mm-1.5 mm.

As an improvement of the utility model, the stator sleeve and the turntable are impeller-shaped.

As an improvement of the utility model, the top of the outer cylinder is provided with an upper flange, the bottom of the outer cylinder is provided with a lower flange, the middle part of the upper flange is provided with a socket joint, the middle part of the lower flange is provided with an inner sleeve socket hole, the inner sleeve comprises a driving shaft sleeve joint post, a gas buffer chamber, a stator mounting groove and a connecting flange, the bottom of the driving shaft sleeve joint post is fixedly connected with the top of the gas buffer chamber, the shaft hole of the driving shaft sleeve joint post is communicated with the gas buffer chamber, the stator mounting groove is arranged at the bottom of the gas buffer chamber and communicated with the gas buffer chamber, the connecting flange is welded on the outer wall of the groove body of the stator mounting groove, the driving shaft is sleeved in the shaft hole of the driving shaft sleeve joint post, the air cavity is arranged in the gas buffer chamber, the upper end of the stator is fixedly arranged in the stator mounting groove, the upper flange of, the driving shaft sleeve connecting post of the inner sleeve is fixedly sleeved in the sleeve joint, and the stator mounting groove body of the inner sleeve is sleeved in the sleeve hole of the inner sleeve.

As an improvement of the present invention, the transmission shaft adopts a stepped shaft, the transmission shaft includes a first-stage shaft and a second-stage shaft, a pin hole is arranged at the upper end of the first-stage shaft, an upper retaining ring and a lower retaining ring are welded on the second-stage shaft, the transmission shaft and the motor shaft are both fixedly connected with a shaft coupling through a pin, the pin is sleeved in the pin hole, the upper retaining ring is arranged at the bottom of the connecting portion between the transmission shaft sleeve connecting column and the gas buffer chamber, the upper retaining ring completely covers the gap between the shaft hole of the transmission shaft sleeve connecting column and the gas cavity of the gas buffer chamber, the lower retaining ring is arranged at the top contact portion between the gas buffer chamber and the rotor, and the upper retaining ring completely covers the gap between the inner cavity of the stator and the gas; the upper end of the rotor is provided with a threaded blind hole, the lower part of the lower retainer ring is provided with a section of external thread, and the transmission shaft and the rotor are fixed in a threaded connection mode.

As an improvement of the utility model, the transmission shaft cooling gas air inlet has been seted up to the upper portion lateral wall of urceolus, has seted up transmission shaft cooling gas outlet at the bottom lateral wall of urceolus, and transmission shaft cooling gas air inlet and gas outlet are linked together with the chamber that holds of urceolus.

As an improvement of the utility model, the upper portion and the lower part of stator all are equipped with the screw thread installation department, are equipped with the screw thread on the inslot wall of stator mounting groove, and the upper portion screw thread of stator is installed in the stator mounting groove, and the lower part screw thread of stator is installed in the screw hole of stator cover, the bottom of rotor is equipped with the screw thread installation department, and the bottom screw thread of rotor is installed in the screw hole of carousel.

As an improvement of the utility model, the upper portion outside cover of stator is equipped with high temperature resistant insulation cover, has seted up the screw rod through-hole on the insulation cover, set up the screw thread blind hole on the flange of endotheca, adopt the screw rod to pass screw rod through-hole back screw thread installation to the screw thread blind hole on the endotheca flange, carry out fixed Assembly with the flange of endotheca with the insulation cover.

Compared with the prior art, the rotor mechanism of the utility model has the advantages of ingenious overall structure design, reasonable and stable structure, compact volume, easy installation and use, low manufacturing cost and long service life, the motor rotating shaft and the rotor are directly connected to use direct transmission, compared with the side transmission of other rotor degassing equipment, the lateral transmission ensures the precision, reduces the vibration during transmission, prolongs the service life, prevents the equipment from vibrating to generate liquid level fluctuation to adsorb liquid level gas, and enhances the degassing effect; compared with the conventional side transmission mode, the bearing is cancelled, the phenomenon of bearing locking when the rotor rotates is prevented, and the stability of the equipment is improved; in addition, a main shaft cooling gas inlet and a main shaft cooling gas outlet are formed in the outer barrel, when the temperature of the main shaft rises, cooling gas is pumped into the gas inlet to enter the inner cavity of the outer barrel, the temperature of the main shaft is reduced along with the discharge of the gas, and the service life is prolonged; in addition, under the condition of high-speed rotation, the graphite stator and rotor break up large inert gas bubbles into small bubbles with very fine and uniform sizes through the turntable, the stator sleeve and the spiral gas grooves on the rotor, and the small bubbles are sprayed out in a spiral track and uniformly dispersed in the molten metal, so that the total specific surface area of the small bubbles is greatly increased, the adsorption capacity is stronger, the residence time of the molten metal is longer, the distribution uniformity of the bubbles is improved, the action range of the bubbles is expanded, and the surfaces of the inert bubbles and more hydrogen and impurities in the molten metal are contacted, so that the harmful substances are brought to the liquid surface; the rotor is sleeved in the stator, the rotor rotates and stirs the aluminum liquid in the stator, the rotor, the liquid level and the scum are isolated from scouring and abrasion, inert gas is filled in a gap between the stator and the rotor, the rotor is effectively isolated from being oxidized and corroded by oxygen at high temperature, and the service life of the rotor is greatly prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a rotor mechanism according to a preferred embodiment of the present invention.

Fig. 2 is an assembly structure view of the inner sleeve and the outer cylinder in the preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of the inner sleeve in the preferred embodiment of the present invention.

Fig. 4 is a schematic structural view of the outer cylinder in the preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a transmission shaft in a preferred embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a stator in a preferred embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a rotor in a preferred embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a stator casing according to a preferred embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a turntable according to a preferred embodiment of the present invention.

Fig. 10 is a schematic structural view of the thermal insulation jacket according to the preferred embodiment of the present invention.

In the figure: 1-a transmission motor, 2-a motor mounting base, 3-an inner sleeve, 4-an outer sleeve, 5-a transmission shaft, 6-a stator, 7-a rotor, 8-a stator sleeve, 9-a rotating disc, 10-a coupler, 11-a spiral air groove, 12-a lower flange, 13-a connecting flange, 14-an air buffer chamber, 15-an air transmission joint, 16-a transmission shaft cooling air inlet, 17-a heat preservation sleeve, 18-a stainless steel screw rod, 19-a dust cover, 20-an O-shaped sealing ring, 21-a lifting ring, 22-a first-stage shaft, 23-a second-stage shaft, 24-an upper retainer ring, 25-a lower retainer ring and 26-a pin hole.

Detailed Description

For the purposes of promoting an understanding and appreciation of the invention, the invention will be further described and illustrated in connection with the accompanying drawings.

As shown in fig. 1-9, a rotor mechanism for refining and degassing aluminum liquid according to a preferred embodiment of the present invention comprises a transmission motor 1, a motor mounting base 2, an inner sleeve 3, an outer cylinder 4, a transmission shaft 5, a stator 6, a rotor 7, a stator sleeve 8, and a turntable 9, wherein the transmission motor 1 and the outer cylinder 4 are respectively mounted at the upper end and the lower end of the motor mounting base 2, a dust cap 19 is further disposed between the motor mounting base 2 and the outer cylinder 4, a high temperature resistant O-ring 20 is disposed at the lower portion of the dust cap 19 to enhance the sealing effect between the outer cylinder 4 and the motor mounting base 2, the inner sleeve 3 is sleeved in the accommodating cavity of the outer cylinder 4, the inner sleeve 3 is connected to the bottom of the outer cylinder 4 through a flange, the transmission shaft 5 is sleeved in the inner cavity of the inner sleeve 3, the upper end of the transmission shaft 5 is connected to the rotation shaft of the transmission motor 1 through, the rotor 7 is sleeved in the inner cavity of the stator 6, the stator 6 is fixedly arranged at the bottom of the inner sleeve 3, the tail end of the stator 6 is fixedly connected with the stator sleeve 8, the turntable 9 is arranged at the bottom of the stator sleeve 8, a through hole is arranged in the middle of the stator sleeve 8, the tail end of the rotor 7 is fixedly connected with the turntable 9 after penetrating through the through hole, a spiral air groove 11 for conveying air is arranged on the rotor 7, an air permeable gap is arranged between the stator sleeve 8 and the turntable 9, an air cavity is arranged on the inner sleeve 3, concentric air holes are arranged on the outer cylinder 4 and the inner sleeve 3 and communicated with the air cavity, an air conveying joint 15 is arranged in the air hole, inert gas or refining agent gas mixed with the inert gas is introduced into the air cavity through the air conveying joint 15, the refining agent gas is gas formed by mixing a refining agent or a slag removing agent used for assisting in refining aluminum liquid and the inert gas, and the powdery refining agent or slag removing agent is mixed and dispersed, then the molten aluminum is introduced, the air inlet of the spiral air groove 11 is communicated with the air cavity, the air in the air cavity enters the spiral air groove 11 through the air inlet, the air outlet of the spiral air groove 11 is communicated with the ventilation gap, and the air flowing out of the air outlet is sprayed into the molten aluminum through the ventilation gap. In addition, an O-ring groove is formed at the position of the installation hole of the gas transmission joint 15, and an O-ring 20 is inserted into the O-ring groove when the gas transmission joint 15 is installed, so as to prevent gas leakage.

Wherein, the spiral direction of the spiral gas groove 11 is consistent with the rotation direction of the rotor 7, the gas inlet of the spiral gas groove 11 is positioned at the top end of the rotor 7, and the gas outlet of the spiral gas groove 11 is positioned at the tail end of the rotor 7. The guiding effect on the inert gas is enhanced through the spiral gas groove 11, the phenomenon of gas flow dispersion can be solved, radial disturbance is enhanced, and the transmission efficiency is improved. In addition, in the refining process of the aluminum melt, inert gas and a refining agent or a slag removing agent are mixed to form powder mist, and then the powder spraying function is realized through the spiral gas groove 11, so that the aluminum liquid in the refining furnace can be refined or removed, and the purity of the aluminum liquid is improved. Inert gas or refining agent gas is conveyed into the gas cavity through the gas conveying joint 15, and the inert gas or the refining agent gas enters the spiral gas groove 11 through the gas inlet of the spiral gas groove 11. The gas outlet of the spiral gas groove 11 is positioned at the tail end of the rotor 7, the gas outlet of the spiral gas groove 11 is communicated with the ventilation gap, the inert gas or the refining agent gas is transmitted to the ventilation gap through the spiral gas groove 11 in a rotating mode to be sprayed out, the airflow is uniformly divided into fine bubbles through strong stirring of the turntable 9, the fine bubbles are low in floating speed in the aluminum liquid, and rise along a spiral trace under the action of the rotor 7, the moving distance and the retention time of the bubbles in the aluminum liquid can be effectively prolonged, and the hydrogen removal capacity is fully exerted.

In addition, the size of the ventilation gap between the stator sleeve 8 and the turntable 9 is 1.0mm-3.5 mm. The size of the air permeable gap is too large or too small, the air permeable pressure of the air permeable gap is influenced, and the size of bubbles entering the aluminum liquid is influenced, so that the coverage range of the bubbles is influenced, and the hydrogen removal effect is weakened.

In addition, in order to facilitate the rotor 7 to be assembled into the stator 6, an assembling gap is arranged between the rotor 7 and the stator 6, and the size of the assembling gap after the rotor 7 and the stator 6 are assembled is 0.1mm-1.5 mm. Meanwhile, the assembly gap can be filled with inert gas flowing in the spiral gas groove 11, so that the rotor 7 is effectively isolated from being oxidized and corroded by oxygen at high temperature, and the service life of the rotor 7 is greatly prolonged.

As shown in fig. 2-4, an upper flange is arranged at the top of the outer cylinder 4, a lower flange 12 is arranged at the bottom of the outer cylinder 4, a socket joint is arranged at the middle of the upper flange, a socket hole of an inner sleeve 3 is arranged at the middle of the lower flange 12, the inner sleeve 3 comprises a transmission shaft 5 socket post, a gas buffer chamber 14, a stator 6 mounting groove and a connecting flange 13, the bottom of the transmission shaft 5 socket post is fixedly connected with the top of the gas buffer chamber 14, a shaft hole of the transmission shaft 5 socket post is communicated with the gas buffer chamber 14, the stator 6 mounting groove is arranged at the bottom of the gas buffer chamber 14, the stator 6 mounting groove is communicated with the gas buffer chamber 14, the connecting flange 13 is welded on the outer wall of the stator 6 mounting groove, the transmission shaft 5 is sleeved in the shaft hole of the transmission shaft 5 socket post, a gas cavity is arranged in the gas buffer chamber 14, the upper end of the stator 6 is fixedly arranged in, the lower flange 12 of the outer barrel 4 is connected with the connecting flange 13 of the inner barrel 3 through a bolt, the sleeve joint column 5 of the transmission shaft of the inner barrel 3 is fixedly sleeved in the sleeve joint, and the groove body of the mounting groove of the stator 6 of the inner barrel 3 is sleeved in the sleeve joint hole of the inner barrel 3.

As shown in fig. 1 and 5, the transmission shaft 5 adopts a two-stage stepped shaft, the transmission shaft 5 comprises a first-stage shaft 22 and a second-stage shaft 23, the shaft diameter of the first-stage shaft 22 is smaller, and the through inner cavity of the corresponding transmission shaft 5 is also reduced, so that the weight of the transmission shaft 5 can be effectively reduced, and the whole rotor 7 mechanism is light; in addition, because the rotor 7 mechanism works in a high-temperature environment, the thinner the transmission shaft 5 is, the poorer the deformation resistance of the transmission shaft 5 is, the second-stage shaft 23 with a larger shaft diameter is adopted for driving the rotor 7 on the transmission shaft 5 close to the connecting end part of the rotor 7, and the deformation quantity of the transmission shaft 5 can be effectively reduced. The upper end of the first-stage shaft 22 is provided with a pin hole 26, the transmission shaft 5 and the motor rotating shaft are fixedly connected with the coupler 10 through pins, the pins are sleeved in the pin hole 26, preferably, the transmission shaft 5 and the motor rotating shaft are connected by adopting an ML (ML) type quincunx elastic block coupler 10, an upper retaining ring 24 and a lower retaining ring 25 are welded on the second-stage shaft 23, the upper retaining ring 24 is arranged at the bottom of the connecting part of the sleeve connecting column of the transmission shaft 5 and the gas buffer chamber 14, the upper retaining ring 24 completely covers the gap between the shaft hole of the sleeve connecting column of the transmission shaft 5 and the gas chamber of the gas buffer chamber 14, thereby preventing the gas in the gas chamber from leaking outwards through the gap between the shaft hole of the sleeve connecting column of the transmission shaft 5 and the gas chamber of the gas buffer chamber 14, stabilizing the gas pressure in the gas buffer chamber 14 to reduce loss, further enhancing the degassing effect, the lower retaining ring 25 is arranged, the upper retainer ring 24 completely covers a gap between the inner cavity of the stator 6 and the air cavity of the air buffer chamber 14, the upper retainer ring 24 has a limiting effect on the rotor 7, and the speed of air entering the air inlet of the spiral air groove 11 at the end part of the rotor 7 can be effectively increased; the upper end of rotor 7 has been seted up threaded blind hole to the lower part that lies in lower retaining ring 25 on second grade axle 23 is equipped with one section external screw thread, and second grade axle 23 of transmission shaft 5 adopts threaded connection's mode to fix with rotor 7, and with retaining ring 25 butt on the top of rotor 7 down, in order to prevent that rotor 7 from taking place to rock. In addition, an O-shaped ring groove is formed at the connecting part of the first-stage shaft 22 and the second-stage shaft 23, an O-shaped sealing ring is filled in the O-shaped ring groove, the sealing effect of the inner sleeve 3 is enhanced, the pressure of the gas connected from the gas transmission joint 15 is stable, the loss is reduced, and the degassing effect is enhanced.

As shown in fig. 1-3, a transmission shaft cooling air inlet 16 is formed in the upper side wall of the outer cylinder 4, a transmission shaft 5 cooling air outlet is formed in the bottom side wall of the outer cylinder 4, and the transmission shaft cooling air inlet 16 and the transmission shaft cooling air outlet are communicated with the accommodating cavity of the outer cylinder 4. In the use, in the air inlet input cooling gas to urceolus 4 inner chamber, cooling gas discharges from the gas outlet, along with cooling gas's discharge, has just reduced the temperature of transmission shaft 5, can effectively strengthen its life.

As shown in fig. 6 and 7, the upper part and the lower part of the stator 6 are provided with screw thread mounting parts, screw threads are arranged on the inner wall of the mounting groove of the stator 6, the upper part of the stator 6 is mounted in the mounting groove of the stator 6, the lower part of the stator 6 is mounted in the screw thread hole of the stator sleeve 8 by screw threads, the bottom of the rotor 7 is provided with screw thread mounting parts, and the bottom of the rotor 7 is mounted in the screw thread hole of the rotary table 9 by screw threads. Therefore, the mounting structure between the stator 6 and the inner sleeve 3 and the stator sleeve 8 and the mounting structure between the rotor 7 and the turntable 9 are simple and reliable, and the dismounting and the maintenance are convenient.

As shown in fig. 8 and 9, the stator casing 8 and the rotor disk 9 are both impeller-shaped. By using the impeller-shaped turntable 9 and the stator sleeve 8, the entering gas or the refining agent gas powder mist can be effectively dispersed into a dispersed state, and the rotation resistance of the turntable 9 can be reduced, thereby improving the degassing (dehydrogenation) efficiency, shortening the degassing time and reducing the cost.

As shown in fig. 1 and 10, in order to realize heat preservation and insulation of the stator 6 and reduce impact of high temperature of molten aluminum at the bottom on the rotor 7 (the transmission shaft 5 and the inner cavity), a high temperature resistant heat preservation sleeve 17 is sleeved on the outer side of the upper part of the stator 6, a screw rod through hole is formed in the heat preservation sleeve 17, a threaded blind hole is formed in the connecting flange 13 of the inner sleeve 3, a stainless steel screw rod 18 is installed in the threaded blind hole in the connecting flange 13 of the inner sleeve 3 after penetrating through the screw rod through hole, and the heat preservation sleeve 17 and the connecting flange 13 of the inner sleeve 3 are fixedly assembled. The heat preservation sleeve 17 extends into the upper cover of the refining furnace, the number of the heat preservation sleeves 17 arranged outside the inner sleeve 3 is adjusted according to actual requirements, the total length of the heat preservation sleeves 17 is basically consistent with the thickness of the upper cover, and the operation and the use of the rotor 7 mechanism are influenced by the overlong heat preservation sleeves 17. Preferably, the material for making the thermal insulation sleeve 17 mainly adopts aluminum silicate and composite material thereof.

The utility model discloses an overall structure design of rotor 7 mechanism that preferred embodiment provided is ingenious practical, long service life, job stabilization is reliable, this rotor 7 mechanism assembles under the online and debugs to become integrative after-mounting in the installation station of upper cover, because rotor 7 mechanism's whole weight is great, adopt sky car class apparatus to hoist (remove and install) usually, consequently reserve at the top of motor mount pad 2 and have rings 21 as the hoist and mount mouth to convenient the realization hoists rotor 7 mechanism.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a rotor mechanism for refining degassing of aluminium liquid which characterized in that: the gas-liquid separation device comprises a transmission motor, a motor mounting seat, an inner sleeve, an outer sleeve, a transmission shaft, a stator, a rotor, a stator sleeve and a rotary table, wherein the transmission motor and the outer sleeve are respectively arranged at the upper end and the lower end of the motor mounting seat, the inner sleeve is sleeved in a containing cavity of the outer sleeve, the inner sleeve is connected with the bottom of the outer sleeve through a flange, the transmission shaft is sleeved in an inner cavity of the inner sleeve in a penetrating manner, the upper end of the transmission shaft is connected with a rotating shaft of the transmission motor through a coupler, the lower end of the transmission shaft is connected with the rotor in a transmission manner, the rotor is sleeved in an inner cavity of the stator, the stator is fixedly arranged at the bottom of the inner sleeve, the tail end of the stator is fixedly connected with the stator sleeve, the rotary table is arranged at the bottom of the stator sleeve, a through hole is, the outer cylinder and the inner sleeve are provided with concentric vent holes which are communicated with the air cavity, an air transmission joint is arranged in each vent hole, air is introduced into the air cavity through the air transmission joint, an air inlet of the spiral air groove is communicated with the air cavity, and an air outlet of the spiral air groove is communicated with the air permeable gap.

2. The rotor mechanism for refining and degassing molten aluminum as defined in claim 1, wherein the spiral direction of said spiral gas groove is consistent with the rotation direction of the rotor, the gas inlet of said spiral gas groove is located at the top end of the rotor, and the gas outlet of said spiral gas groove is located at the tail end of the rotor.

3. The rotor mechanism for refining and degassing aluminum liquid as defined in claim 1, wherein the size of the air-permeable gap between the stator casing and the turntable is 1.0mm-3.5 mm.

4. The rotor mechanism for refining and degassing molten aluminum as defined in claim 1, wherein an assembly gap is provided between the rotor and the stator, and the size of the assembly gap after the rotor and the stator are assembled is 0.1mm-1.5 mm.

5. The rotor mechanism for refining and degassing molten aluminum as defined in claim 1, wherein said stator casing and said rotor disc are impeller-shaped.

6. The rotor mechanism for refining and degassing molten aluminum as defined in any one of claims 1 to 5, wherein the top of said outer cylinder is provided with an upper flange, the bottom of the outer cylinder is provided with a lower flange, the middle of the upper flange is provided with a socket joint, the middle of the lower flange is provided with an inner socket hole, said inner socket comprises a driving shaft socket post, a gas buffer chamber, a stator mounting groove and a connecting flange, the bottom of the driving shaft socket post is fixedly connected with the top of the gas buffer chamber, the shaft hole of the driving shaft socket post is communicated with the gas buffer chamber, the stator mounting groove is provided at the bottom of the gas buffer chamber and is communicated with the gas buffer chamber, the connecting flange is welded on the outer wall of the groove body of the stator mounting groove, the driving shaft is sleeved in the shaft hole of the driving shaft socket post, the gas chamber is provided in the gas buffer chamber, the, the upper flange of the outer barrel is connected with the motor mounting seat through a bolt, the lower flange of the outer barrel is connected with the connecting flange of the inner sleeve through a bolt, the driving shaft sleeve connecting column of the inner sleeve is fixedly sleeved in the sleeve joint, and the stator mounting groove body of the inner sleeve is sleeved in the sleeve joint hole of the inner sleeve.

7. The rotor mechanism for refining and degassing molten aluminum as defined in claim 6, wherein the transmission shaft is a stepped shaft, the transmission shaft comprises a first-stage shaft and a second-stage shaft, a pin hole is formed in the upper end of the first-stage shaft, an upper retainer ring and a lower retainer ring are welded to the second-stage shaft, the transmission shaft and the motor rotating shaft are fixedly connected with the coupler through a pin, the pin is sleeved in the pin hole, the upper retainer ring is arranged at the bottom of the connecting portion of the connecting column of the transmission shaft sleeve and the gas buffer chamber, the lower retainer ring is arranged at the top contact portion of the gas buffer chamber and the rotor, a threaded blind hole is formed in the upper end of the rotor, a section of external thread is formed in the lower portion of the lower retainer ring, and the transmission shaft and the.

8. The rotor mechanism for molten aluminum refining and degassing as defined in claim 7, wherein the upper side wall of the outer cylinder is provided with a transmission shaft cooling air inlet, the bottom side wall of the outer cylinder is provided with a transmission shaft cooling air outlet, and the transmission shaft cooling air inlet and the transmission shaft cooling air outlet are communicated with the accommodating cavity of the outer cylinder.

9. The rotor mechanism for molten aluminum refining and degassing as claimed in claim 8, wherein the upper and lower portions of the stator are provided with screw thread mounting portions, screw threads are provided on the inner wall of the stator mounting groove, the upper portion of the stator is screw-mounted in the stator mounting groove, the lower portion of the stator is screw-mounted in the screw thread hole of the stator housing, the bottom of the rotor is provided with screw thread mounting portions, and the bottom of the rotor is screw-mounted in the screw thread hole of the turntable.

10. The rotor mechanism for refining and degassing molten aluminum as defined in claim 9, wherein a thermal insulation sleeve is sleeved on an outer side of an upper portion of the stator, a screw through hole is formed in the thermal insulation sleeve, a threaded blind hole is formed in the connecting flange of the inner sleeve, and the thermal insulation sleeve and the connecting flange of the inner sleeve are fixedly assembled by threading the screw through hole and then threadedly mounting the screw into the threaded blind hole in the connecting flange of the inner sleeve.