CN218002177U - Spherical feeding device - Google Patents

Abstract

The utility model provides a spherical feeding device, which is provided with a spherical frame structure, a plurality of net wires which are mutually staggered and connected are arranged, meshes are formed between the adjacent net wires, and the meshes comprise feeding holes and liquid passing holes; the feed aperture is sized to receive an additive block; the size of the liquid passing hole is smaller than that of the feeding hole, and the size of the liquid passing hole is designed to allow the melt to freely enter and exit, and is suitable for preventing the additive blocks from leaving the spherical frame structure. According to the scheme, as the spherical feeding device has an arc-shaped profile and a porous structure, the resistance suffered by the spherical feeding device in the process of immersing and leaving the melt is small; moreover, because the surface area of the ball is the smallest under the same volume, the amount of the melt carried away when the ball leaves the melt is small, the carried melt can slide into a molten pool through the porous structure along the arc-shaped contour, and the loss of the melt is reduced.

Description

Spherical feeding device

Technical Field

The utility model relates to an alloy field of smelting, concretely relates to a spherical feeding device for adding additive to the fuse-element.

Background

In alloy melting, it is often necessary to add additives to the molten alloy melt to adjust the composition of the alloy to achieve desired properties. If the density of the additive is lower than that of the melt, the additive floats above the melt, burns in contact with air and is not uniformly melted in the melt, and the properties of the product are affected. For example, in the smelting of aluminum magnesium alloys, copper magnesium alloys, and the like, such a problem is encountered when a magnesium ingot is added to an aluminum melt or a copper melt. It is often necessary to place it below the surface of the alloy melt using a dedicated feeding device.

In the prior art, some schemes adopt a pressure feeding device, and an additive block is pressed into the lower part of a melt by utilizing a graphite pressure plate driven by a motor. In other schemes, a frame-shaped feeding device is adopted, an additive block is placed in an iron hexahedron-shaped frame, then the frame is sunk into the melt, the resistance of the device is large when the additive block enters and exits the melt, and more melt can be carried in the process of extracting the melt after the melting is finished, so that the loss of the melt is caused. The ferrous material of the frame is unstable and can also contaminate the melt, affecting alloy composition and properties.

In practice it is desirable to provide a new charging device which overcomes the above mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at least solving the defects existing in the prior art and providing the feeding device which has convenient operation, small melt loss, no melt pollution and can be completely immersed into the bottom of the smelting furnace.

In a first aspect, a spherical charging device is provided, which has a spherical frame structure, and the spherical frame structure is provided with a plurality of net wires which are connected in a staggered way, and meshes are formed between adjacent net wires, and the meshes comprise charging holes and liquid passing holes; the feed aperture is sized to receive an additive block; the size of the liquid passing hole is smaller than that of the feeding hole, and the size of the liquid passing hole is designed to allow the melt to freely enter and exit, and is suitable for preventing the additive block from leaving the spherical frame structure.

According to the scheme, as the spherical feeding device has an arc-shaped profile and a porous structure, the fluid resistance of the spherical feeding device in the process of immersing and leaving the melt is small; moreover, because the surface area of the ball is the smallest under the same volume, the carried melt is less when the ball leaves the melt, and the carried melt can slide into a molten pool through the porous structure along the arc-shaped contour, thereby reducing the loss of the melt.

In some embodiments, the mesh wire comprises a plurality of circular weft yarns parallel to each other and a plurality of semicircular warp yarns perpendicular to the plurality of circular weft yarns, wherein meshes of a curved quadrilateral are formed between two adjacent weft yarns and two adjacent warp yarns, each mesh comprises a feed hole located in the middle of the warp yarn direction and a plurality of liquid passing holes located on two sides of each feed hole in the warp yarn direction, the size of each liquid passing hole is smaller than that of each feed hole, and the size of each liquid passing hole is gradually reduced along with the distance from each feed hole.

According to the scheme, after the light additive block is added into the spherical frame structure and then is immersed into the molten pool, the liquid passing holes can prevent the floating additive block from escaping, and when the additive block further floats as the additive block is melted and becomes small, the plurality of liquid passing holes with the sizes gradually reduced beyond the upper end can maintain the additive block, so that the conditions of the escape, the floating and the combustion of the additive block are inhibited to the maximum extent.

In some embodiments, the ratio of mesh area to spherical area of the spherical charging device is in the range of 1.

According to this solution, it was experimentally verified that a spherical feeding device of this ratio range can obtain the minimum fluid resistance and the minimum loss of entrained melt during immersion and withdrawal of the spherical feeding device.

In some embodiments, the spherical frame structure is made of a high temperature resistant ceramic material including alumina or silicon nitride.

According to the scheme, the spherical frame structure made of the high-temperature-resistant ceramic material has high stability, can resist the erosion of molten metal and reduce the pollution to a melt; and the adhesive property is poor, so that the loss caused by the adhesion of the melt can be reduced.

In some embodiments, the spherical frame structure has a high temperature resistant release coating.

According to the scheme, the high-temperature resistant anti-sticking coating can reduce the pollution to the melt and reduce the loss caused by the adhesion of the melt.

In some embodiments, the link is mounted at an upper end point of the spherical frame structure.

According to the scheme, the connecting rod can be used for operating the spherical feeding device to move and lift.

In some embodiments, the tie rod has a bent shape with a horizontal portion extending horizontally and an inclined portion extending bent downward, the end of the inclined portion connecting the spherical frame structure, the inclined portion having an angle of inclination matching an angle of inclination of a side wall of a melt pool containing the melt, the horizontal portion and the inclined portion having an included angle in a range of 120 ° to 145 °.

According to the scheme, the depth of the spherical frame structure capable of being immersed into the molten pool can be increased under the condition that the limitation of the height of the lateral furnace door of the smelting furnace on the height of the connecting rod and the limitation of the width of the bottom of the molten pool on the length of the connecting rod are met.

In some embodiments, the links comprise upper and lower detachably connected links; the upper connecting rod is made of iron material; the lower connecting rod is made of high-temperature-resistant ceramic materials, wherein the high-temperature-resistant ceramic materials comprise aluminum oxide or silicon nitride, or the lower connecting rod is provided with a high-temperature-resistant anti-sticking coating.

According to the scheme, the pollution and the adhesion to the melt when the lower connecting rod is immersed in the melt can be reduced, and the overall cost and the processing performance of the connecting rod can be considered.

In some embodiments, the upper link is dog-leg shaped and the lower link is straight; the upper connecting rod is provided with a bent part bent and extended downwards at the front end, a middle horizontal part and a matching part at the rear end, the matching part is provided with an insertion hole and is used for being connected with a forklift, the lower end of the bent part and the upper end of the lower connecting rod are detachably mounted, and the two are collinear to form an inclined part of the connecting rod.

According to this scheme, the spherical feeding device of this structure can cooperate with fork truck, can be passed in and out the furnace gate by fork truck operation translation ground to and pass in and out the fuse-element vertically, convenient operation, the cost is controllable.

In some embodiments, the additive block is a magnesium ingot and the melt is an aluminum alloy melt or a copper alloy melt.

According to the scheme, the spherical feeding device can be used for adding magnesium ingots when aluminum alloy or copper alloy is smelted, the magnesium ingots are low in density and easy to burn, the magnesium ingot can be prevented from floating to the surface of a melt and being burnt by adding the magnesium through the spherical feeding device, and the magnesium adding effect is improved.

Drawings

Fig. 1 is a spherical feeding device according to a first embodiment of the present invention;

fig. 2 is a spherical feeding device according to a second embodiment of the present invention;

fig. 3 is a spherical feeding device according to a third embodiment of the present invention;

fig. 4 is a schematic view of a forklift operating the spherical charging device of fig. 3 for charging operation.

Reference numerals are as follows: 100 spherical feeding devices; 101, a network cable; 102 meshes; 103 weft yarns; 104 warps; 105 a feed aperture; 106 liquid passing holes; k additive blocks; 200 spherical feeding devices; 201 a spherical frame structure; 202 a connecting rod; 203 an upper connecting rod; 204 lower connecting rod; 300 spherical feeding devices; 301 a spherical frame structure; a 302 connecting rod; 303 an upper connecting rod; 304 lower connecting rod; 306 a bent portion; 307 a horizontal part; 308 a mating portion; 309 a jack; 310 a reinforcing bar; a 400 aluminum smelting pool; 401, melting pool; 402 an oven door; 403 forklift truck.

Detailed Description

In order to make the purpose, scheme and advantage of the technical scheme of the utility model clearer, the drawings of the specific embodiment of the utility model will be combined hereafter, and the technical scheme of the embodiment of the utility model is clearly and completely described. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like or corresponding reference numerals in the drawings denote like or corresponding parts.

Fig. 1 shows a schematic view of a spherical charging device 100 according to a first embodiment of the present invention. The spherical charging device 100 has a spherical frame structure having a plurality of wires 101 connected to each other in a staggered manner, with mesh openings 102 formed between adjacent wires 101. Specifically, the mesh wire 101 may include a plurality of circular weft threads 103 parallel to each other, and a plurality of semicircular warp threads 104 extending between upper and lower end points perpendicular to the plurality of weft threads 103. Two adjacent weft yarns 103 and two adjacent warp yarns 104 enclose a mesh 102 of a curved quadrilateral. The mesh 102 includes a feed hole 105 at a middle position in the warp direction, and liquid passing holes 106 at both sides of the feed hole 105 in the warp direction, the feed hole 105 having a size larger than that of the liquid passing hole 106. In particular, the feed hole 105 is sized to accommodate a conventionally sized additive block K, for example, a standard sized magnesium ingot, as indicated by the dashed arrow in fig. 1; the size of the liquid passing hole 106 is designed to prevent the additive block K from leaving, and at the same time, to allow the melt to freely enter and exit, so that the melted additive can be mixed into the melt.

In the embodiment of fig. 1, 6 weft threads 103 are schematically shown, which are arranged at equal height intervals, and 14 warp threads 104 are arranged at equal angle intervals, wherein the size of a row of meshes 102 formed by the two innermost weft threads 103 is the largest, and the sizes of the meshes 102 on the upper and lower sides are gradually reduced as approaching the upper and lower end points. One of the middle row of mesh openings 102 with the largest dimension can be used as a feed opening 105, and the remaining mesh openings 102 with the smaller dimension can be used as a liquid through opening 106.

In some embodiments, the diameter of the spherical frame structure is approximately 1000mm. The size of the feed aperture 105 is approximately 150X100mm and the size of the liquid passing aperture 106 is in the range 50X50mm to 100X100 mm. The diameter of the mesh 101 is approximately 10mm.

The above mentioned number, relative position and size of the weft 103 and warp 104 are non-limiting examples, and other numbers, relative positions and sizes are possible, as long as they can form a spherical frame structure and form the feeding holes 105 and the liquid passing holes 106 with different sizes, which all fall within the protection scope of the present patent.

In use, the additive block K can be placed in the spherical feeding device 100 through the feeding hole 105 in advance, and then the spherical feeding device 100 is immersed below the melt level of the smelting furnace, if the density of the additive block K is less than that of the melt, the additive block K will float up, but will be hindered by the wire 101 above the spherical feeding device 100, and will not float to the surface to be oxidized by contacting with air. Therefore, the spherical feeding device 100 can solve the problems of floating and oxidation of the light additive block K added into the melt, avoid burning loss and improve the smelting quality.

In some embodiments, the spherical charging device 100 can be operated by a lifting device (e.g., a forklift, a motor lift mechanism, etc.) to dip and lift the melt, as described below. In some embodiments, the spherical charging device 100 may have a connection structure, such as a linkage, for connecting with a lifting device.

Because the spherical feeding device 100 has a spherical profile and a porous structure, the fluid resistance of the melt during immersion and removal is low, and the amount of melt carried during removal is also low, which makes the lifting operation easy and the melt loss is reduced, especially compared to a polyhedral structure.

In some embodiments, it is preferred that the ratio of the mesh area to the spherical area of the sum of the mesh openings 101 on the spherical charging device 100 is in the range of 1. Through experimental tests, in the ratio range, the spherical feeding device 100 can obtain the minimum fluid resistance and the minimum carried melt loss.

In some embodiments, it is preferred that the spherical frame structure is made of a high temperature resistant ceramic material, such as alumina, silicon nitride, and the like. Compared with an iron material, the high-temperature resistant ceramic material keeps stable structure in the melt, and has small pollution to the melt components; moreover, the adhesive property is poor, and the loss due to the adhesion of the melt can be reduced. Alternatively or additionally, a high temperature resistant anti-sticking coating can be applied to the surface of the spherical frame structure to further reduce contamination and melt adhesion. The spherical frame structure may be integrally formed, or may be formed by connecting a plurality of separately formed members to each other via connecting members.

Fig. 2 shows a schematic view of a spherical charging device 200 according to a second embodiment of the present invention. The difference from the embodiment of fig. 1 will be mainly described in that the spherical charging device 200 comprises, in addition to the spherical frame structure 201, a connecting rod 202 connected thereto. A link 202 is mounted at the upper end point of the spherical frame structure 201. The linkage 202 is connected to a lifting device (not shown) that moves the ball frame structure 201 into and out of the melt. The lifting device is not the invention point of the present invention, and various types of lifting devices can be used, which are not described herein.

As shown in fig. 2, the link 202 preferably includes an upper link 203 and a lower link 204. The lower end of the lower link 204 is connected to the upper end point of the spherical frame structure 201, the upper end of the lower link 204 is detachably connected to the lower end of the upper link 203, and the upper link 203 is connectable to the elevating device. The upper connecting rod 203 is made of a ferrous material, such as stainless steel; the lower connecting rod 204 is made of high temperature resistant ceramic material, such as alumina, silicon carbide, and/or a high temperature resistant anti-sticking coating can be coated on the surface. In use, the lower connecting rod 204 will be immersed in the melt, as shown in FIG. 2, and the refractory ceramic material and/or refractory anti-stick coating will reduce contamination and adhesion to the melt; meanwhile, compared with the upper connecting rod 203 which is completely made of high-temperature-resistant ceramic material, the upper connecting rod is made of iron material, so that the cost can be reduced, and the upper connecting rod is convenient to process and assemble.

Fig. 2 shows that the interior of the ball-shaped frame structure 201 is filled with additive blocks K, the ball-shaped frame structure 201 having been immersed in the melt (shown in the figure as squares), the density of the additive blocks K being lower than the density of the melt and thus floating up against the mesh wires at the upper end of the ball-shaped frame structure 201. The liquid passing holes near the upper end only allow the melt to enter and exit the spherical frame structure 201, but do not allow the additive block K to freely enter and exit, and the additive block K can be kept inside the spherical frame structure 201, and then, as long as the spherical frame structure 201 is completely immersed in the melt, the additive block K is not exposed to air combustion loss.

In particular, as the additive mass K becomes smaller in volume as it melts, it will gradually move upward, and the smaller the size of the weep hole of the ball-shaped frame structure 201 closer to the upper end, the additive mass K may continue to be held until it substantially completely melts. The mesh structure gradually reduced upwards is adapted to the volume change of the additive blocks, so that the time length of the additive blocks in the spherical frame structure 201 can be prolonged, and the condition that the additive blocks K are removed and oxidized is inhibited to the maximum extent.

Fig. 3 shows a schematic view of a spherical charging device 300 according to a third embodiment of the present invention. The difference from the embodiment of fig. 2 is mainly described below, namely, a link 302 having a bent shape is adopted, which has a horizontal portion extending horizontally and an inclined portion extending downward in a bent manner, and the end of the inclined portion is connected with a spherical frame structure 301.

Specifically, as shown in fig. 3, the link 302 includes an upper link 303 and a lower link 304 detachably connected together, the upper link 303 having a polygonal line shape, and the lower link 304 having a linear shape. The upper link 303 has a bent portion 306 extending downward at the front end, a horizontal portion 307 at the middle, and a mating portion 308 at the rear end. The bent portion 306 is bent downward relative to the horizontal portion 307, and forms an included angle of 120 ° to 145 °, preferably 135 °. The lower end of the bent portion 306 and the upper end of the lower link 304 are removably mounted, with the two being collinear to form the aforementioned angled portion of the link 302. The mating portion 308 may include a receptacle 309 for connection with a forklift boom. Optionally, a reinforcing bar 310 may be disposed between the bent portion 306 and the horizontal portion 307 to enhance the mechanical strength of the connection portion.

Fig. 4 is a schematic view of a magnesium charging operation for melting aluminum alloy by operating the ball charging device 300 of fig. 3 using a forklift.

Fig. 4 shows a schematic view of a side-gated aluminum smelting cell 400 having a molten bath 401 of inverted trapezoidal cross-section, with the interior containing a heated molten aluminum alloy melt and the melt level shown in dashed lines. The side above the molten pool 401 is provided with an oven door 402. The spherical charging device 300 is mounted on the lifting arm of the forklift 403.

In operation, firstly, a magnesium ingot is put into the spherical frame structure 301 of the spherical feeding device 300; then, operating a forklift 403 to horizontally move the spherical feeding device 300 to pass through the furnace door 402 and enter the aluminum smelting tank 400; thereafter, the fork truck 403 is operated to lower the spherical charging device 300 so that it is fully immersed below the level of the molten bath 401 and remains in position until the magnesium ingot is fully melted, and then the spherical charging device 300 is raised to remove it.

When the spherical frame structure 301 descends, the profile is arc-shaped, the spherical frame structure has a porous structure, the diameter of the mesh wire is small, a closed surface does not exist, the melt can freely pass through the liquid passing hole 306 to enter the interior, the fluid resistance in the process of immersing and moving out the melt is small, and the spherical frame structure can be conveniently operated by a forklift; when the spherical frame structure 301 rises, the melt cannot slide down because the profile is arc-shaped and has a porous structure, the melt can freely pass through the liquid passing holes 306 and fall, and the surface area of the sphere is the smallest under the same volume, so the melt is hardly carried in the moving process, and the loss of the melt is very small.

When the lifting arms of the forklift 403 are lowered to the lowest point, the spherical frame structure 301 may be lowered to the deepest part of the molten bath 401, for example to the bottom. As shown in FIG. 4, the inclination angle of the side wall of the molten bath 401 is substantially the same as that of the inclined part of the connecting rod 302, and the inclination angle design can increase the depth of the spherical frame structure which can be immersed into the melt and improve the uniformity of charging under the condition of considering the limit of the height of the furnace door to the height of the connecting rod and the limit of the width of the bottom of the molten bath to the length of the connecting rod. Specifically, a larger inclination angle can increase the height of the connecting rod, and influence the operability of the furnace door in and out; a smaller angle of inclination will make the connecting rod length larger, limiting the horizontal range of movement of the spherical frame structure, otherwise the same fork truck translation stroke may cause collision of the spherical feeding device with the bath wall. Therefore, by designing the angle of the inclined portion of the connecting rod 302 to match the angle of inclination of the side wall of the molten pool, the convenience of operation of the fork truck for magnesium addition can be improved.

It should be noted that, although the above example is described in connection with the magnesium adding operation in aluminum magnesium alloy smelting, the present invention is not limited thereto, and may be used in any situation where it is necessary to add a light additive to a molten bath, for example, the magnesium adding operation in copper magnesium alloy smelting, and so on.

Exemplary embodiments of the present invention have been described in detail herein with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations of the various features and structures presented in the present invention may be made without departing from the scope of the invention as defined in the appended claims.

Claims (10)

1. A spherical feeding device, which is characterized in that,

the device is provided with a spherical frame structure, wherein the spherical frame structure is provided with a plurality of net wires which are connected in a staggered mode, meshes are formed between every two adjacent net wires, and each mesh comprises a feeding hole and a liquid passing hole;

the feed aperture is sized to receive an additive block;

the size of the liquid passing hole is smaller than that of the feeding hole, and the size of the liquid passing hole is designed to allow the melt to freely enter and exit, and is suitable for preventing the additive blocks from leaving the spherical frame structure.

2. The spherical charging device according to claim 1,

the net twine includes many circular weft parallel to each other, and the perpendicular to many circular weft's many semi-circular warp, encloses into the tetragonal mesh of curved surface between two adjacent weft and two adjacent warps, the mesh is including being in the charge door of warp direction intermediate position department to and lie in a plurality of liquid holes of crossing of charge door both sides in the warp direction, a plurality of sizes of crossing the liquid hole are less than the size of charge door, a plurality of sizes of crossing the liquid hole reduce along with keeping away from the charge door gradually.

3. Spherical charging device according to claim 1,

the ratio of the mesh area to the spherical area of the spherical feeding device is in the range of 1.52-1.78.

4. The spherical charging device according to claim 1,

the spherical frame structure is made of high-temperature-resistant ceramic materials, and the high-temperature-resistant ceramic materials comprise aluminum oxide or silicon nitride.

5. The spherical charging device according to claim 1,

the spherical frame structure has a high temperature resistant anti-stick coating.

6. The spherical charging device according to claim 1, further comprising:

and the connecting rod is installed at the upper end point of the spherical frame structure.

7. Spherical charging device according to claim 6,

the connecting rod is provided with a bent shape and is provided with a horizontal part extending horizontally and an inclined part extending downwards in a bent mode, the tail end of the inclined part is connected with the spherical frame structure, the inclined angle of the inclined part is matched with the inclined angle of the side wall of a molten pool containing melt, and the included angle between the horizontal part and the inclined part is in the range of 120-145 degrees.

8. The spherical charging device according to claim 6,

the connecting rod comprises an upper connecting rod and a lower connecting rod which are detachably connected;

the upper connecting rod is made of iron material;

the lower connecting rod is made of high-temperature-resistant ceramic materials, wherein the high-temperature-resistant ceramic materials comprise aluminum oxide or silicon nitride, or the lower connecting rod is provided with a high-temperature-resistant anti-sticking coating.

9. The spherical charging device according to claim 8,

the upper connecting rod is in a fold line shape, and the lower connecting rod is in a straight line shape;

the upper connecting rod is provided with a bent part bent and extended downwards at the front end, a middle horizontal part and a matching part at the rear end, the matching part is provided with an insertion hole and is used for being connected with a forklift, the lower end of the bent part and the upper end of the lower connecting rod are detachably mounted, and the two are collinear to form an inclined part of the connecting rod.

10. The spherical charging device according to any one of claims 1 to 9,

the additive block is a magnesium ingot, and the melt is an aluminum alloy melt or a copper alloy melt.

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