Degassing and impurity removing device for aluminum alloy melt

Abstract

The utility model provides an aluminum alloy melt degassing and impurity removing device, and relates to the technical field of aluminum alloy. The two blowing pipes are arranged on the base, the gas ring is arranged on the peripheries of the bottom ends of the blowing pipes, the gas rod is connected with the gas ring and the bottom ends of the blowing pipes, a driving gear is rotationally arranged in the base, an inner ring gear coaxial with the driving gear is arranged in the base on the periphery of the driving gear, and the inner ring gear is connected with the gas rod. Two driven gears meshed with the driving gear and the inner ring gear are arranged between the driving gear and the inner ring gear, through round holes are formed in the centers of the driven gears, and the two blowing pipes are arranged in the round holes; the injection pipe is communicated with an inert gas source, the interiors of the gas ring and the gas rod are cavities and are communicated with each other, the gas rod is communicated with the injection pipe, and a plurality of gas holes are uniformly distributed in the gas ring and the gas rod. The gas and impurity removal device improves the gas and impurity removal effect and the gas and impurity removal efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminium alloy technical field, concretely relates to a kind of aluminium alloy melt degassing and impurity removal device. BACKGROUND

[0002] Secondary aluminium alloy refers to the aluminium alloy obtained by refining after re-melting using waste aluminium alloy material and waste aluminium or aluminium-containing waste, which is an important source of aluminium metal and has important significance for the recycling of aluminium resources.

[0003] In the prior art, the degassing and impurity removal of aluminium alloy melt can be achieved by introducing inert gas into the melt. However, it is difficult for the inert gas to uniformly contact the melt and completely disperse into the melt, resulting in that part of the melt is difficult to be blown by the inert gas or receives a low amount of inert gas blowing, and thus the degassing and impurity removal effect and efficiency of the melt are not ideal. SUMMARY

[0004] The utility model aims to develop an aluminium alloy melt degassing and impurity removal device that improves the degassing and impurity removal effect and efficiency.

[0005] The utility model is achieved by the following technical solutions:

[0006] An aluminium alloy melt degassing and impurity removal device includes:

[0007] a base;

[0008] two blowing pipes arranged on the base;

[0009] a gas ring arranged around the bottom end of the blowing pipe;

[0010] a gas rod connected to the gas ring and the bottom end of the blowing pipe;

[0011] The base is internally rotatably provided with a driving gear, the base around the driving gear is internally provided with an inner ring gear in coaxial state with the driving gear, two driven gears meshing with the driving gear and the inner ring gear are arranged between the driving gear and the inner ring gear, the center of the driven gear is provided with a through hole, and the two blowing pipes are arranged in the through hole.

[0012] The blowing pipe is in communication with an inert gas source, the gas ring and the gas rod are both hollow and in communication, the gas rod is in communication with the blowing pipe, and the gas ring and the gas rod are uniformly provided with a plurality of gas holes.

[0013] Optionally, the blowing pipe is slidably connected to the inner wall of the through hole, the base is rotatably provided with a first disc coaxially rotatably connected to the driving gear, the blowing pipe passes through the first disc, the outer wall of the blowing pipe is provided with a reciprocating screw groove, and the first disc is rotatably connected with a driving block slidably matched with the reciprocating screw groove.

[0014] Optionally, the gas ring is in the shape of a circular ring and has a circular cross section, the gas ring is coaxial with the blowing pipe, and four gas rods in the shape of a cross are arranged between the gas ring and the blowing pipe.

[0015] Optionally, the two driven gears are symmetrically arranged on the two sides of the driving gear and are in the same radial direction of the driving gear, the driving gear is arranged on the axis of the furnace body containing the aluminum alloy melt, and the sum of the outer diameters of the two gas rings does not exceed the inner diameter of the furnace body.

[0016] Optionally, the top of the base is provided with a motor, and a speed reducer arranged in the base is drivingly connected between the motor and the driving gear.

[0017] Optionally, the base is in the shape of a cylinder with a closed top and an open bottom, the first disc is rotatably arranged in the base, and the second disc is rotatably arranged at the bottom of the base, the first disc, the second disc and the top of the base are correspondingly provided with through holes coaxial with the circular holes and allowing the blowing pipe to pass through, the top end and the bottom end of the driving gear are coaxially rotatably connected with the first disc and the second disc respectively, and the top end and the bottom end of the driven gear are rotatably connected with the first disc and the second disc respectively.

[0018] Optionally, two guide grooves parallel to the axial direction of the blowing pipe are arranged on the outer wall of the blowing pipe, the two guide grooves are symmetrically arranged on the same radial direction of the blowing pipe, and two guide pieces in sliding contact with the two guide grooves are vertically arranged on the inner wall of the circular hole.

[0019] Optionally, a driving ring coaxial with the blowing pipe is arranged on the first disc, and the driving block is rotatably arranged on the inner wall of the driving ring.

[0020] The utility model discloses the beneficial effect is:

[0021] The two gas rings and the gas rods in the two gas rings arranged in the utility model rotate and self-rotate in the circumferential direction of the furnace body, and also ascend and descend, so that the gas rings and the gas rods are in contact with all the melts in the furnace body, the inert gas sprayed by the gas rings and the gas rods is completely dispersed into the melts, and the degassing and impurity removal effect and efficiency of the melts are improved.

[0022] The movement of the gas rings and the gas rods forms a stirring effect on the melts, the stirring can make the inert gas form smaller and more uniformly distributed bubbles in the melts, and the small bubbles can more effectively contact the gas and impurities in the melts, thereby improving the degassing and impurity removal efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 Structure diagram of the utility model;

[0025] Figure 2 Structure diagram of the air ring and air rod.

[0026] The drawings show that the utility model discloses a kind of aluminum alloy melt degassing and impurity removal devices, including pedestal 1, pedestal 1 is cylindrical and top is closed, bottom is open, pedestal 1 top is connected with two-way or three-way drive equipment. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature rather than limiting.

[0028] In the description of the present invention, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present invention.

[0029] The embodiments of the utility model will be described in detail below in conjunction with the drawings.

[0030] As Figure 1 and Figure 2 The utility model discloses a kind of aluminum alloy melt degassing and impurity removal devices, including pedestal 1, pedestal 1 is cylindrical and top is closed, bottom is open, pedestal 1 top is connected with two-way or three-way drive equipment.

[0031] A first disc 2 is rotatably arranged in the base 1, and a second disc 3 is rotatably arranged at the bottom of the base 1. The first disc 2 and the second disc 3 are coaxial with the base 1. The edges of the first disc 2 and the second disc 3 are rotatably connected to the inner side wall of the base 1.

[0032] A driving gear 4 and two driven gears 5 are rotatably connected between the first disc 2 and the second disc 3. The top end and the bottom end of the driving gear 4 are coaxially rotatably connected to the first disc 2 and the second disc 3, respectively. The two driven gears 5 are symmetrically arranged on the two sides of the driving gear 4 and are on the same radial direction of the driving gear 4. The top end and the bottom end of the driven gear 5 are rotatably connected to the first disc 2 and the second disc 3, respectively.

[0033] An inner ring gear 6 is arranged on the inner side wall of the base 1 between the first disc 2 and the second disc 3. The inner ring gear 6 is coaxial with the driving gear 4. The two driven gears 5 are in mesh with the driving gear 4 and the inner ring gear 6.

[0034] A motor is arranged at the corresponding position of the top of the base 1. A speed reducer box is arranged in the base 1 and is in transmission connection between the motor and the driving gear 4. The motor is in operation to drive the driving gear 4 to rotate. The driving gear 4 drives the two driven gears 5 to rotate and to make a circular motion around the driving gear 4. The first disc 2 and the second disc 3 rotate with the circular motion of the driven gears 5.

[0035] A circular hole is arranged at the center of the driven gear 5. A through hole coaxial with the circular hole is arranged at the top of the first disc 2 and the base 1 and at the bottom of the second disc 3. A blowing pipe 8 is slidably arranged in the circular hole. The blowing pipe 8 passes through the through holes of the first disc 2, the second disc 3 and the top of the base 1. An air inlet hose is connected to the top end of the blowing pipe 8 and is in communication with an inert gas source.

[0036] Two guide grooves 11 parallel to the axial direction of the blowing pipe 8 are arranged on the outer wall of the blowing pipe 8. The two guide grooves 11 are symmetrically arranged on the same radial direction of the blowing pipe 8. Two guide pieces in sliding contact with the two guide grooves 11 are vertically arranged on the inner wall of the circular hole. The guide pieces are inserted into the guide grooves 11 to achieve the sliding connection of the blowing pipe 8 and the circular hole. The blowing pipe 8 can only axially slide to rise and fall in the circular hole. The blowing pipe 8 cannot rotate relative to the circular hole and the driven gear 5.

[0037] A driving ring 7 is arranged on the first disc 2 and is sleeved on the outside of the blowing pipe 8. The driving ring 7 is coaxial with the blowing pipe 8 and is fixedly connected to the first disc 2. A reciprocating threaded groove 10 is arranged on the outer wall of the blowing pipe 8. A driving block is rotatably arranged on the inner wall of the driving ring 7. The shape of the driving block is adapted to the groove body of the reciprocating threaded groove 10. The driving block slides in the reciprocating threaded groove 10. Since the driving block can rotate, it rotates and adjusts the trajectory according to the change in the arc. When the blowing pipe 8 rotates in the driving ring 7, the blowing pipe 8 rises and falls in the driving ring 7 under the sliding cooperation of the driving block and the reciprocating threaded groove 10.

[0038] The bottom end of the blowing pipe 8 is provided with a gas ring 9, which is annular and circular in cross section, and is coaxial with the blowing pipe 8. The gas ring 9 is internally provided with four cross-shaped gas rods 12, the two ends of each gas rod 12 being connected with the gas ring 9 and the bottom end of the blowing pipe 8 respectively. The gas ring 9 and the gas rods 12 are hollow and communicate with each other, the gas rods 12 communicate with the blowing pipe 8, and the gas ring 9 and the gas rods 12 are uniformly provided with a plurality of gas holes. The two gas rings 9 at the bottom ends of the two blowing pipes 8 have a small spacing, the driving gear 4 is on the axis of the furnace body containing the aluminum alloy melt, and the spacing between the two gas rings 9 and the inner wall of the furnace body is also small. When the two gas rings 9 and the inner gas rods 12 rotate and move in a circular manner, the covered area includes almost the entire interior of the furnace body, that is, on the same cross section of the furnace body, the area covered by the movement of the two gas rings 9 and the inner gas rods 12 is an annular ring with a very small inner diameter, and the outer diameter of the annular ring is slightly different from the inner diameter of the furnace body. Since the gas ring 9 is circular, the gas flow emitted by the gas holes on the outer side of the gas ring 9 can also cover the inner side and the outer side of the annular ring, so that the melt on the same cross section in the furnace body can be blown by inert gas.

[0039] When the aluminum alloy melt is degassed and impurities are removed, the base 1 moves to drive the lower part of the blowing pipe 8 and the gas ring 9 and the gas rod 12 into the melt in the furnace body. The gas source supplies inert gas to the blowing pipe 8 through the gas inlet hose, the inert gas is emitted from the gas holes on the gas rod 12 and the gas ring 9 after passing through the blowing pipe 8, and the inert gas absorbs and carries away the dissolved gas and impurities in the melt as it rises in the melt. In this process, the motor operates to drive the driving gear 4 to rotate, the two driven gears 5 rotate and move in a circular manner around the driving gear 4, the first disc 2 and the second disc 3 rotate under the drive of the driven gear 5, and the driven gear 5 rotates on the first disc 2 and the second disc 3. The blowing pipe 8 rotates with the driven gear 5 and moves in a circular manner around the driving gear 4. When the blowing pipe 8 rotates, the reciprocating thread groove 10 on the outer wall of the blowing pipe 8 and the driving block on the inner wall of the driving ring 7 slide with each other, so that the blowing pipe 8 rises or falls. When the driving block slides to the bottom end of the reciprocating thread groove 10 or the top end of the reciprocating thread groove 10, the blowing pipe 8 falls or rises, so as to realize the cyclic lifting movement of the blowing pipe 8. When the driving block slides to the bottom end of the reciprocating thread groove 10 or the top end of the reciprocating thread groove 10, the driving block rotates correspondingly according to the change of the arc of the track. The blowing pipe 8 drives the gas ring 9 and the gas rod 12 to rotate, move in a circular manner around the center of the furnace body, and continuously and cyclically lift to realize stirring of the melt.

[0040] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application. Any technical solutions that can be realized on the basis of the above embodiments without creative labor shall be considered to fall within the protection scope of the patent of the present application.

Claims

1. An apparatus for degassing and removing inclusions from an aluminum alloy melt, characterized by, include: Base; Two jet pipes are mounted on the base; An air ring is located around the bottom end of the blowpipe. The air rod is connected to the air ring and the bottom of the blowpipe. The base has a drive gear rotatably mounted inside it, and an inner ring gear coaxial with the drive gear is mounted inside the base surrounding the drive gear. Two driven gears mesh between the drive gear and the inner ring gear. The driven gear has a through hole at its center, and two blowpipes are located inside the hole. The blowpipe is connected to an inert gas source. The gas ring and gas rod are both hollow cavities and are connected. The gas rod is connected to the blowpipe. The gas ring and gas rod are evenly covered with a number of air holes.

2. The apparatus of claim 1, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. The blowpipe is slidably connected to the inner wall of the circular hole. A first disc is rotatably mounted on the base and rotatably connected to the drive gear. The blowpipe passes through the first disc. The outer wall of the blowpipe is provided with a reciprocating threaded groove. A drive block is rotatably connected to the first disc and slidably engaged with the reciprocating threaded groove.

3. The apparatus of claim 2, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. The air ring is circular in shape and has a circular cross-section. The air ring and the blow pipe are coaxial. Four cross-shaped air rods are provided between the air ring and the blow pipe.

4. The apparatus of claim 3, wherein the apparatus further comprises a gas inlet tube. The two driven gears are symmetrically arranged on both sides of the driving gear and are on the same radial direction of the driving gear. The driving gear is located on the axis of the furnace body that contains the aluminum alloy melt. The sum of the outer diameters of the two gas rings does not exceed the inner diameter of the furnace body.

5. The apparatus of claim 4, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. A motor is installed on the top of the base, and a gearbox located inside the base is connected to the motor and the drive gear.

6. The apparatus of claim 4, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. The base is cylindrical with a closed top and an open bottom. The first disc is rotatably disposed inside the base, and a second disc is rotatably disposed at the bottom of the base. The first disc, the second disc, and the top of the base are respectively provided with through holes coaxial with the circular holes and for the blow pipe to pass through. The top and bottom ends of the driving gear are rotatably connected to the first disc and the second disc, respectively, and the top and bottom ends of the driven gear are rotatably connected to the first disc and the second disc, respectively.

7. The apparatus of claim 6, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. The outer wall of the blowpipe is provided with two guide grooves parallel to its axial direction. The two guide grooves are symmetrically arranged on the same radial direction of the blowpipe. The inner wall of the circular hole is provided with two guide plates that slide in contact with the two guide grooves.

8. The apparatus of claim 6, wherein the apparatus is configured to remove at least one of hydrogen, oxygen, and nitrogen from the aluminum alloy melt. The first disk is provided with a drive ring that is sleeved on the outside of the blow pipe and coaxial with it, and the drive block is rotatably disposed on the inner wall of the drive ring.

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