CN219342239U - Aluminum liquid purifying and degassing device - Google Patents

Abstract

The application provides an aluminium liquid purifies degasser, including elevating system and crossbearer, the crossbearer is established and can reciprocate on elevating system, is equipped with the pivot that can drive the rotation on the crossbearer, and the pivot is cavity tubular structure, and the bottom of pivot is fixed with rather than integrated into one piece's rotor, is fixed with helical blade on the outer wall of pivot, and the cover has the barrel that can insert in the furnace body on the helical blade, and the barrel passes through the connecting rod to be fixed with the crossbearer, and the rotor is established in the barrel. The aluminum liquid purification and degassing device can enable the aluminum liquid inside and outside the cylinder to circularly flow through the pushing of the spiral blade, hydrogen and oxidation slag inclusion in the aluminum liquid are easier to contact and adsorb with nitrogen bubbles through relatively narrower gaps, and the hydrogen and the oxidation slag inclusion are brought out of a melt along with rising of the bubbles. The molten aluminum is purified and deaerated more fully, so that the generation of air holes is further reduced, and the rejection rate is reduced.

Description

Aluminum liquid purifying and degassing device

Technical Field

The application relates to aluminum liquid degassing technology, in particular to an aluminum liquid purifying degassing device.

Background

The die-casting aluminum alloy has good use performance and technological performance and is widely applied in various industrial departments. However, workpieces produced by die casting of aluminum alloys are often scrapped due to the presence of air holes. In die casting of aluminum alloys, the casting temperature of molten aluminum is generally between 610 ℃ and 660 ℃, at which a large amount of gas (mainly hydrogen) is dissolved in the aluminum liquid, and when the aluminum alloy solidifies, a large amount of hydrogen precipitates in the form of bubbles in the aluminum alloy die casting.

The existing aluminum liquid purifying and degassing device is characterized in that a rotating shaft and a rotor are inserted into a furnace body from an opening, nitrogen is discharged into the furnace body while the aluminum liquid is stirred through the rotation of the rotating shaft and the rotor, and bubbles generated by the nitrogen adsorb hydrogen dissolved in the aluminum liquid.

But only by the rotation of the rotating shaft and the rotor, the aluminum liquid in the furnace body can only be driven to rotate around the rotating shaft, and the aluminum liquid is difficult to drive to be sufficiently stirred, so that hydrogen and oxidation slag inclusion in the aluminum liquid cannot be sufficiently contacted with nitrogen bubbles, and the efficiency of purifying and degassing is low and the effect is poor.

Disclosure of Invention

The application provides an aluminium liquid purification and degasification device for solve current aluminium liquid purification and degasification device stirring inadequately, the low poor problem of effect of degassing efficiency.

The application provides an aluminium liquid purifies degasser, including elevating system and crossbearer, the crossbearer is established and to reciprocate on elevating system, be equipped with the pivot that can drive the rotation on the crossbearer, the pivot is cavity tubular structure, the bottom of pivot is fixed with rather than integrated into one piece's rotor, be fixed with helical blade on the outer wall of pivot, the cover has the barrel that can insert in the furnace body on the helical blade, the barrel passes through the connecting rod and is fixed with the crossbearer, the rotor is established in the barrel.

Optionally, be fixed with the sleeve respectively on the both sides wall of crossbearer, insert in the sleeve rather than sliding connection's crane, the crane is trilateral door structure that forms that surrounds, the crossbearer with install electric putter between the roof of crane, the side lever and the barrel of crane are fixed.

Optionally, a limiting column is fixed at the bottom of the cylinder.

Optionally, the rotating shaft, the rotor, the helical blade, the cylinder body and the limiting column are all made of graphite materials.

Optionally, cover plate is overlapped in the pivot of helical blade upper end, the top of apron is fixed with the spring of cup jointing at the pivot outer wall, the spring upper end is fixed with the crossbearer, the pivot passes spring and apron rotation connection.

Optionally, an exhaust hole is formed in the cover plate and communicated with the opening of the furnace body.

Optionally, a ceramic fiber heat insulation layer is arranged on the top surface of the cover plate, and the melting point of the cover plate is more than 1000 ℃.

Compared with the prior art, the aluminum liquid purifying and degassing device has the beneficial effects that:

the aluminum liquid inside and outside the cylinder body can circularly flow through pushing of the spiral blade, and the aluminum liquid continuously passes through the gap between the rotor and the cylinder body, so that stirring contact is more sufficient. The hydrogen and the oxidation slag inclusion in the aluminum liquid are in a relatively narrower gap, so that the hydrogen and the oxidation slag inclusion are easier to contact with nitrogen bubbles exhausted by the rotor, and the degassing efficiency and the degassing effect are effectively improved. The hydrogen and the oxidized slag inclusion are adsorbed by nitrogen bubbles due to the gas partial pressure difference and are carried out of the melt along with the rising of the bubbles, so that the molten aluminum is purified and deaerated more fully, and the generation of air holes is further reduced, and the rejection rate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an apparatus for purifying and degassing molten aluminum according to an embodiment of the present disclosure;

FIG. 2 is a sectional view of the aluminum liquid purifying and degassing apparatus according to an embodiment of the present disclosure installed in the furnace body of FIG. 1;

FIG. 3 is a schematic view of a crane position of an aluminum liquid purifying and degassing apparatus according to an embodiment of the present disclosure;

FIG. 4 is a partial cross-sectional view of FIG. 3 of an aluminum liquid purification and degassing apparatus provided in an embodiment of the present application;

FIG. 5 is a right side view of the lifting frame of FIG. 3 of an aluminum liquid purifying and degassing device according to an embodiment of the present application;

FIG. 6 is a top view of the lift frame of FIG. 3 of an aluminum liquid purification and degassing device according to an embodiment of the present application;

FIG. 7 is a sectional view of the apparatus for purifying and degassing molten aluminum according to an embodiment of the present utility model installed in the furnace body of FIG. 3.

Reference numerals illustrate:

a lifting mechanism 1; a cross frame 2; a rotating shaft 3; a rotor 4; a control box 5; a helical blade 6; a cylinder 7; a connecting rod 8; a furnace body 9; a sleeve 10; a lifting frame 11; an electric push rod 12; a limit post 13; a cover plate 14; a spring 15; and an exhaust hole 16.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, are also within the scope of the present application based on the embodiments herein.

As shown in fig. 1-2, an embodiment of the present application provides an aluminum liquid purifying and degassing device, including elevating system 1 and crossbearer 2, crossbearer 2 establishes and can reciprocate on elevating system 1, be equipped with the pivot 3 that can drive the rotation on the crossbearer 2, pivot 3 is cavity tubular structure, the bottom of pivot 3 is fixed with rather than integrated into one piece's rotor 4, be fixed with helical blade 6 on the outer wall of pivot 3, the cover has barrel 7 that can insert in the furnace body 9 on the helical blade 6, barrel 7 passes through connecting rod 8 and crossbearer 2 to be fixed, rotor 4 establishes in barrel 7.

The helical blade 6 is fixed on the outer wall of the rotating shaft 3, and the cylinder 7 is sleeved on the helical blade 6. The control box 5 is electrically connected with the lifting mechanism 1 and the driving system of the rotating shaft 3. When the furnace is used, the transverse frame 2 on the lifting mechanism 1 is controlled to be lifted by the control box 5, and the transverse frame 2 drives the rotating shaft 3 and the cylinder 7 to be lifted, and then the furnace body 9 is moved to the lower part of the cylinder 7; then the transverse frame 2 is controlled to move downwards through the control box 5, so that the rotating shaft 3 and the cylinder 7 are inserted into the furnace body from the opening of the furnace body 9. A gap is arranged between the bottom of the cylinder 7 and the inner bottom wall of the furnace body 9.

The degassing device is started to enable the rotating shaft 3 to drive the rotor 4 and the helical blades 6 to rotate, and meanwhile, nitrogen is discharged into the furnace body 9 from the exhaust hole on the rotor 4 through the rotating shaft 3. The spiral blade 6 rotates to push the aluminum liquid in the cylinder 7 downwards, the aluminum liquid is discharged from the lower end of the cylinder 7 and then diffuses, the aluminum liquid is guided by the bottom wall and the side wall of the furnace body 9 to overflow upwards, and the aluminum liquid enters from the upper end of the cylinder 7. The spiral blade 6 and the cylinder 7 can make the aluminum liquid more fully circularly stirred.

In this embodiment, the aluminum liquid inside and outside the cylinder 7 can circulate by pushing the spiral blade 6, and the aluminum liquid continuously passes through the gap between the rotor 4 and the cylinder 7. The hydrogen and the oxidized slag in the aluminum liquid are more likely to contact with the nitrogen bubbles discharged from the rotor 4 in a relatively narrower gap, and the hydrogen and the oxidized slag are adsorbed by the nitrogen bubbles due to the gas partial pressure difference and are carried out of the melt as the bubbles rise. The molten aluminum is purified and deaerated more fully, so that the generation of air holes is further reduced, and the rejection rate is reduced.

As shown in fig. 3 to 7, in one possible implementation manner, the two side walls of the transverse frame 2 are respectively fixed with a sleeve 10, a lifting frame 11 slidably connected with the sleeve 10 is inserted into the sleeve 10, the lifting frame 11 is of a door-shaped structure formed by surrounding three sides, an electric push rod 12 is installed between the transverse frame 2 and the top wall of the lifting frame 11, and a side rod of the lifting frame 11 is fixed with the cylinder 7.

The lifting frame 11 is pushed by the electric push rod 12 to drive the cylinder body 7 to lift, so that the height of the cylinder body 7 in the furnace body 9 can be adjusted, and the relative position of the cylinder body 7 and the helical blade 6 can be adjusted. The spiral blade 6 and the cylinder 7 can still achieve good circulation stirring effect in the furnace bodies 9 with different heights.

Meanwhile, when the rotating shaft 3 and the cylinder 7 of the transverse frame 2 are inserted into the furnace body 9, the cylinder 7 can be lifted to the highest position, the lifting stroke of the transverse frame 2 is shortened, and the operation time is saved.

In one possible implementation, a limit post 13 is fixed to the bottom of the barrel 7.

The limiting column 13 can play a limiting role when the barrel 7 falls to the lowest position, so that the barrel 7 and the bottom of the furnace body 9 keep a circulating gap, and the problem that misoperation attaches the bottom of the barrel 7 to the inner bottom surface of the furnace body 9, and the aluminum liquid circulation is affected to generate potential safety hazards is avoided.

In one possible implementation, the shaft 3, the rotor 4, the helical blades 6, the cylinder 7 and the limiting post 13 are all made of graphite material.

The rotating shaft 3, the rotor 4, the helical blades 6, the cylinder 7 and the limiting column 13 which are made of graphite materials are high-temperature resistant and oxidation resistant, not easy to damage and long in service life.

As shown in fig. 3 to 7, in one possible implementation manner, the rotating shaft 3 at the upper end of the helical blade 6 is sleeved with a cover plate 14, a spring 15 sleeved on the outer wall of the rotating shaft 3 is fixed at the top of the cover plate 14, the upper end of the spring 15 is fixed with the transverse frame 2, and the rotating shaft 3 passes through the spring 15 and is in rotational connection with the cover plate 14.

The cover plate 14 can function as an aluminum liquid sputtering prevention. The cover plate 14 is fixed with the transverse frame 2 through a spring 15, and when the rotating shaft 3 and the cylinder 7 are inserted into the furnace body 9, the spring 15 can tightly press and cover the cover plate 14 at the opening of the furnace body 9.

In one possible implementation, as shown in fig. 7, the cover 14 is provided with a vent hole 16, and the vent hole 16 communicates with the opening of the furnace body 9.

The gas overflowed from the furnace body 9 can be discharged from the exhaust hole 16 to release the pressure.

In one possible implementation, the top surface of the cover plate 14 is provided with a ceramic fiber insulation layer, and the melting point of the cover plate 14 is > 1000 ℃.

The cover plate 14 with the melting point higher than 1000 ℃ can not be melted due to high temperature when being covered on the opening of the furnace body 9, and the ceramic fiber heat insulation layer can avoid the influence of high temperature on the upper end spring 15 and the transverse frame 2.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (7)

1. The utility model provides an aluminium liquid purifies degasser, includes elevating system (1) and crossbearer (2), crossbearer (2) are established on elevating system (1) and can reciprocate, be equipped with on crossbearer (2) can drive rotatory pivot (3), pivot (3) are cavity tubular structure, the bottom of pivot (3) is fixed with rather than integrated into one piece's rotor (4), its characterized in that: the rotary shaft is characterized in that a spiral blade (6) is fixed on the outer wall of the rotary shaft (3), a cylinder body (7) capable of being inserted into a furnace body (9) is sleeved on the spiral blade (6), the cylinder body (7) is fixed with the transverse frame (2) through a connecting rod (8), and the rotor (4) is arranged in the cylinder body (7).

2. The aluminum liquid purifying and degassing device according to claim 1, wherein: sleeve (10) are fixed on the both sides wall of crossbearer (2) respectively, inserted in sleeve (10) have rather than sliding connection's crane (11), crane (11) are trilateral door structure that forms that surrounds, crossbearer (2) with install electric putter (12) between the roof of crane (11), the side lever of crane (11) is fixed with barrel (7).

3. The aluminum liquid purifying and degassing device according to claim 2, wherein: a limit column (13) is fixed at the bottom of the cylinder body (7).

4. The aluminum liquid purifying and degassing device according to claim 3, wherein: the rotating shaft (3), the rotor (4), the helical blades (6), the cylinder (7) and the limiting column (13) are all made of graphite materials.

5. The aluminum liquid purifying and degassing device according to claim 1, wherein: the rotating shaft (3) at the upper end of the spiral blade (6) is sleeved with a cover plate (14), a spring (15) sleeved on the outer wall of the rotating shaft (3) is fixed at the top of the cover plate (14), the upper end of the spring (15) is fixed with the transverse frame (2), and the rotating shaft (3) penetrates through the spring (15) and the cover plate (14) to be connected in a rotating mode.

6. The aluminum liquid purifying and degassing device according to claim 5, wherein: an exhaust hole (16) is formed in the cover plate (14), and the exhaust hole (16) is communicated with an opening of the furnace body (9).

7. The aluminum liquid purifying and degassing device according to claim 5, wherein: the top surface of the cover plate (14) is provided with a ceramic fiber heat insulation layer, and the melting point of the cover plate (14) is more than 1000 ℃.

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