Metal smelting furnace having stirring device

Abstract

The present invention belongs to the field of metal smelting. Disclosed is a metal smelting furnace having a stirring device, which furnace achieves uniform distribution of raw materials in molten metal by replacing manual stirring with automatic stirring, such that the labor intensity of operators is reduced, and effective control over the duration and range of stirring is also realized. The metal smelting furnace having a stirring device of the present invention comprises: a furnace body, which has an accommodating cavity for accommodating molten metal; and a stirring device, which comprises a stirring disc and a driving device, wherein the stirring disc comprises a disc body, a raw-material holding portion, and a feed hole, through which raw materials are replenished to the raw-material holding portion, a stirring rod being connected to the disc body, and a plurality of vertically-penetrating openings being provided in the disc body and / or the raw-material holding portion; the driving device is drivingly connected to the stirring rod, and used for driving the stirring rod to ascend and descend, thus making the stirring disc be immersed in or withdrawn from the molten metal in the accommodating cavity; and the raw-material holding portion holds the raw materials in place on the stirring disc, such that the raw materials move together with the stirring disc.

Description

Metal melting furnace with stirring device

Technical field

[0001] The invention relates to the field of metal smelting, in particular to a metal melting furnace with a stirring device. [Background Technology]

[0002] During the metal smelting process, metal raw materials are placed in a furnace for melting. During the melting process, raw materials, compounds, etc. are added to the furnace to adjust the composition of the molten metal, reduce impurities in the molten metal, and remove substances that affect the quality of the metal product.

[0003] When adding raw materials, they are usually put directly into the furnace. If the density of the raw materials is lower than that of the molten metal, they will float on the surface of the molten metal. If the density of the raw materials is higher than that of the molten metal, they will sink to the bottom of the molten metal. Because the molten metal in the furnace is in a static state, the raw materials will be concentrated in the upper or bottom layer of the molten metal after melting, which will cause quality problems in the product due to uneven composition. Therefore, after the raw materials are put in, the molten metal needs to be stirred so that the raw material components can be evenly distributed in the molten metal. However, the stirring process will cause the molten metal to fluctuate violently, and impurities precipitated at the bottom will also diffuse, so the stirring amplitude cannot be violent. Currently, operators use iron ladles to stir manually. The working environment is a high-temperature environment with high labor intensity. It is easy for the molten metal to splash and is very dangerous. In addition, the stirring force of manual stirring cannot be accurately controlled, and there are also areas that are not fully stirred during stirring, which ultimately affects the quality of the product.

[0004] [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and propose a metal melting furnace with a stirring device. Automatic stirring is used instead of manual stirring to achieve uniform distribution of raw materials in the molten metal, thereby reducing the labor intensity of the operator and effectively controlling the stirring time and stirring range.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A metal melting furnace with a stirring device, comprising:

[0008] A furnace body having a cavity for containing molten metal;

[0009] The stirring device includes a stirring disk and a driving device, wherein the stirring disk includes a disk body, a raw material holding portion and a feed hole for replenishing raw materials to the raw material holding portion, the disk body is connected to a stirring rod, and the disk body and / or the raw material holding portion are provided with a plurality of vertical through openings, the driving device is connected to the stirring rod in a transmission manner, and the driving device is used to drive the stirring rod to rise and fall so that the stirring disk is immersed in or leaves the molten metal in the cavity, and the raw material holding portion holds the raw material on the stirring disk so that the raw material moves together with the stirring disk.

[0010] Based on the above scheme, the raw material holding portion includes a cavity for placing the raw material, the feed hole is connected to the cavity, and the opening includes a first opening provided on the top wall of the cavity and a second opening provided on the bottom wall of the cavity, and the size of the first opening and the second opening is smaller than the size of the raw material.

[0011] Based on the above solution, the bottom wall height of the cavity gradually decreases from the feed hole toward the first opening, and the raw materials fed into the cavity from the feed hole move along the bottom wall of the cavity to below the first opening.

[0012] Based on the above solution, the raw material holding portion further includes a baffle, which extends from the top wall of the cavity between the feed hole and the first opening to the bottom wall of the cavity, and both sides of the baffle are connected to the side walls of the cavity.

[0013] Based on the above solution, the baffle is inclined from top to bottom toward the feed hole.

[0014] Based on the above solution, the stirring disk further includes an annular boss provided at the bottom of the disk body, the outer ring wall of the annular boss is connected to the periphery of the disk body, and the lower end of the annular boss is contracted from top to bottom.

[0015] On the basis of the above solution, the opening further includes a third opening, and the third opening is provided at a position on the disc body corresponding to the circular space surrounded by the annular boss.

[0016] Based on the above solution, the circular space gradually expands from top to bottom.

[0017] Based on the above solution, the height of the upper surface of the disc body gradually decreases from the stirring rod to the periphery.

[0018] Based on the above solution, the metal melting furnace further includes an automatic feeder for replenishing raw materials to the raw material holding portion.

[0019] On the basis of the above solution, the automatic feeder includes a discharge channel, a storage cavity connected to the discharge channel, and a pusher, and the pusher is used to push the raw materials in the discharge channel so that the raw materials fall onto the raw material holding portion.

[0020] Based on the above scheme, the pusher includes a base, two pushing arms rotatably mounted on the base and a pushing rod for pushing the base. The automatic feeder also includes a slide groove connected to the discharge channel for the pusher to enter and exit the discharge channel. The storage chamber is located above the discharge channel, and the storage chamber is connected to the discharge channel through a feeding channel.

[0021] On the basis of the above scheme, the two pushing arms are closed to push the raw materials, and the two pushing arms form an avoidance hole when they are closed. The raw materials in the feeding channel pass through the avoidance hole and enter the discharge channel. When the pusher returns, the two pushing arms are opened to separate from the raw materials in the avoidance hole.

[0022] On the basis of the above scheme, when pushing materials, the end of the pusher rod extends from the base to between the two pusher arms to stop the rotation of the pusher arms. During the return stroke, the end of the pusher rod retracts into the base. After the raw material pushes the two pusher arms to open, the pusher is separated from the raw material. The side wall of the discharge channel is provided with an avoidance groove for avoiding the pusher arm, and the side wall of the slide groove is provided with a guide groove connected to the avoidance groove. The guide groove is contracted in the return direction of the pusher to push the two pusher arms to close.

[0023] A metal melting furnace with a stirring device, comprising:

[0024] A furnace body having a cavity for containing molten metal;

[0025] The stirring device includes a stirring rod and a driving device. A raw material holding portion and stirring blades are provided radially outward on the outer side wall of the stirring rod. The driving device is transmission-connected to the stirring rod for driving the stirring rod to rotate and lift, so that the raw material holding portion and the stirring blades are immersed in the molten metal to rotate and stir the molten metal. The raw material is held on the raw material holding portion so that the raw material moves together with the raw material holding portion.

[0026] Based on the above solution, the raw material holding portion includes a shell, a cavity formed by the shell, and an opening provided on the shell and connected to the cavity, and the size of the through hole is smaller than the size of the raw material.

[0027] Based on the above scheme, the cavity includes a feed area and a melt area, and the shell is also provided with a feed hole connected to the cavity to feed the feed area, and the bottom wall of the cavity is provided with a material guide portion to guide the raw materials from the feed area to the melt area.

[0028] On the basis of the above solution, in the rotation direction of the stirring rod, the front end of the stirring blade is higher than the rear end, so as to guide the molten metal to flow from top to bottom during the rotation process.

[0029] On the basis of the above solution, the stirring blade is arranged below the raw material holding portion to guide the molten metal with raw material components downward during the stirring process.

[0030] Beneficial effects of the present invention:

[0031] The present invention discloses a metal melting furnace with a stirring device, which is equipped with a stirring disk. During the smelting process, the raw materials added to the molten metal can be held on the stirring disk by a raw material holding portion, so that the raw materials can be immersed in the molten metal together with the stirring disk, and will not float on the surface of the molten metal to avoid the raw materials from coming into contact with air in a high-temperature environment, causing an oxidation reaction, resulting in abnormal loss of raw materials, and will also increase the oxygen content in the molten metal. The raw materials will not float on the surface of the molten metal or sink to the bottom of the molten metal, resulting in uneven composition of the molten metal. Under the action of the driving device, the stirring disk can move up and down in the molten metal, improving the uniformity of the raw materials in the molten metal, so as to ensure the quality of the finished metal product and prevent the occurrence of uneven quality. In addition, manual stirring is not required, which reduces the labor intensity of the operator and reduces the risk factor. In addition, automated stirring has a larger stirring range than manual stirring, avoiding quality problems caused by local areas of the molten metal not being stirred, and the stirring efficiency is also higher than manual operation, reducing the stirring operation time.

[0032] The vertical through opening allows the molten metal to pass through the stirring plate, reducing the resistance encountered by the stirring plate when it is raised and lowered in the molten metal, avoiding violent fluctuations of the molten metal and causing a large amount of diffusion of impurities at the bottom, so that the molten metal can flow relatively smoothly during the up and down movement of the stirring plate. Usually, since the bottom layer of the molten metal contains a large amount of impurities, the molten metal at the bottom will not participate in the casting process, but will always remain in the furnace until the furnace is scrapped. In this application, since the impurities will not diffuse in large quantities during the melting process of the raw materials on the stirring plate, it will not affect the quality of the molten metal in the cavity that can be used for casting. After stirring, there is no need to let the molten metal stand for a long time to wait for the impurities to sink, and no unnecessary energy waste will be generated. At the same time, the smelting efficiency of the molten metal can be improved to improve production efficiency.

[0033] Furthermore, the raw material holding portion includes a cavity for placing the raw material, the feed hole communicates with the cavity, and the openings include a first opening provided on the top wall of the cavity and a second opening provided on the bottom wall of the cavity, wherein the first opening and the second opening are smaller than the size of the raw material. The raw material is placed in the cavity, and during stirring, molten metal can enter the cavity through the first and second openings, thereby fully contacting the raw material. The molten metal mixed with the raw material components then flows out of the cavity through the first and second openings, mixing with the external molten metal, thereby uniformly distributing the raw material in the molten metal. Because the first and second openings are smaller than the size of the raw material, the raw material can be retained in the cavity. As the raw material melts, when the size of the raw material is smaller than the first and second openings, there is a certain probability that the raw material will leave the stirring plate through the first and second openings. However, since the raw material size is already very small at this point, even if it floats on the surface of the molten metal or sinks to the bottom of the molten metal, it will not significantly affect the composition of the molten metal. Moreover, if the melting point of the molten metal is high, the raw material will completely melt before it floats on the surface of the molten metal or sinks to the bottom of the molten metal.

[0034] Furthermore, the height of the bottom wall of the cavity gradually decreases from the feed hole toward the first opening, and the raw material introduced into the cavity from the feed hole moves along the bottom wall of the cavity to below the first opening. The raw material entering the cavity from the feed hole can move along the bottom wall under the guidance of the bottom wall, thereby falling below the first opening. If the raw material density is greater than that of the molten metal, the raw material can be maintained at the bottom wall of the cavity during the up and down movement of the stirring plate, and will not leave the stirring plate through the feed hole. If the raw material density is less than that of the molten metal, after the stirring plate is immersed in the molten metal, the raw material will float up and hit the top wall of the cavity. Since the raw material is located below the first opening, it is not easy for the raw material to leave the stirring plate through the feed hole after floating up.

[0035] Furthermore, the raw material holding portion further includes a baffle extending from the top wall of the cavity between the feed hole and the first opening toward the bottom wall of the cavity, with both sides of the baffle connected to the side walls of the cavity. When the density of the raw material is lower than the density of the molten metal, the raw material will float up after the stirring plate is immersed in the molten metal. By providing the baffle, the raw material can be blocked during the floating process, limiting the movement of the raw material toward the feed hole. When the raw material is not floating, it is located in a position within the cavity that is offset from the feed hole. Since the surface flow of the molten metal is gentle, the path of the raw material floating up is close to a vertical straight line, making it difficult for the raw material to move toward the feed hole during the floating process. Even if the raw material has a tendency to move toward the feed hole during the floating process, the raw material will be blocked by the lower end of the baffle after floating a certain distance and be limited, thereby preventing the raw material and the stirring plate from separating during the immersion of the stirring plate in the molten metal. In addition, because the two sides of the baffle are connected to the side walls of the cavity, the raw material cannot bypass the baffle and move toward the feed hole.

[0036] Furthermore, the baffle is tilted from top to bottom toward the feed hole. After the baffle is tilted, the blocking range of the lower end of the baffle for the raw material can be increased, thereby improving reliability.

[0037] Furthermore, the stirring disk also includes an annular boss provided at the bottom of the disk body, the outer annular wall of the annular boss being connected to the periphery of the disk body, and the lower end of the annular boss being contracted from top to bottom. The annular boss protrudes from the bottom of the disk body, and during the process of the stirring disk being immersed in the molten metal, the annular boss contacts the molten metal before the disk body. Since the lower end of the annular boss is contracted, the agitation force exerted on the molten metal by the annular boss during the immersion in the molten metal is small, thereby preventing the molten metal from experiencing violent fluctuations. The outer annular wall of the annular boss being connected to the periphery of the disk body prevents the periphery of the disk body from protruding from the annular boss, thereby reducing the agitation force exerted on the molten metal by the edge of the disk body when the disk body is immersed in the molten metal, and avoiding the formation of vortices around the stirring disk.

[0038] Furthermore, the opening also includes a third opening, which is provided on the disk body at a location corresponding to the circular space enclosed by the annular boss. As the annular boss is fully immersed in the molten metal, the lower surface of the disk body corresponding to the circular space will come into contact with the molten metal. By providing the third opening, air in the circular space can be discharged through the third opening during the lowering of the stirring disk, while also allowing the molten metal to pass through the third opening, thereby reducing the stirring force of the stirring disk on the molten metal. Furthermore, the provision of the circular space can also reduce the overall weight of the stirring disk, reducing the load on the drive device.

[0039] Furthermore, the circular space is gradually expanded from top to bottom. The side wall of the circular space has a guiding effect on the molten metal, which can reduce the stirring force of the top wall of the circular space on the molten metal.

[0040] Furthermore, the height of the upper surface of the disk gradually decreases from the stirring rod toward the periphery. The upper surface of the disk guides the molten metal. When the stirring disk moves upward, the molten metal above the stirring disk can flow toward the periphery of the disk under the guidance of the upper surface of the disk, which can reduce the stirring force on the molten metal. When the stirring disk is in the process of leaving the molten metal, the molten metal remaining on the upper surface of the stirring disk can be reduced to prevent the opening from being blocked after the molten metal cools.

[0041] Furthermore, the metal melting furnace further includes an automatic feeder for replenishing raw materials to the raw material holding portion. The automatic feeder can automatically replenish raw materials to the stirring plate, thereby eliminating the need for manual feeding, thereby improving the safety factor of the operation and also facilitating improved operating efficiency.

[0042] Furthermore, the automatic feeder includes a discharge channel, a storage chamber connected to the discharge channel, and a pusher. The pusher is used to push the raw materials in the discharge channel so that the raw materials fall onto the raw material holding portion. The storage chamber is connected to the discharge channel, so that the raw materials in the storage chamber can enter the discharge channel. The pusher can push the raw materials in the discharge channel so that the raw materials are pushed out of the discharge channel and fall onto the raw material holding portion, thereby achieving automatic replenishment of raw materials.

[0043] Furthermore, the pusher includes a base, two pusher arms rotatably mounted on the base, and a pusher rod for pushing the base. The automatic feeder also includes a chute connected to the discharge channel for the pusher to enter and exit the discharge channel. The storage chamber is located above the discharge channel, and the storage chamber is connected to the discharge channel through a feed channel. The pusher rod can push the base to drive the pusher arm to move. The pusher arm can extend from the chute as the base extends into the discharge channel. During the pushing process, the pusher arm can push the raw materials in the discharge channel, causing the raw materials to move forward and fall from the discharge channel onto the raw material holding portion. The raw materials in the storage chamber can enter the discharge channel along the discharge channel, completing the replenishment of the raw materials in the discharge channel.

[0044] Furthermore, the two pusher arms are closed to push the raw materials, and when closed, the two pusher arms form a bypass hole. The raw materials in the feed channel pass through the bypass hole and enter the discharge channel. When the pusher returns, the two pusher arms open to separate from the raw materials in the bypass hole. During the pushing process, the pusher arms remain closed and are able to push the raw materials in the discharge channel. Since the two pusher arms can form a bypass hole when closed, the raw materials in the feed channel can pass through the bypass hole and enter the discharge channel, completing the replenishment of the raw materials in the discharge channel. When the pusher returns, the two pusher arms open and separate from the raw materials, and the pusher arms can retract into the chute.

[0045] Furthermore, when pushing materials, the end of the pusher rod extends from the base to between the two pusher arms to stop the rotation of the pusher arms. During the return stroke, the end of the pusher rod retracts into the base. After the raw material pushes the two pusher arms to open, the pusher is separated from the raw material. The side wall of the discharge channel is provided with an avoidance groove for avoiding the pusher arm, and the side wall of the slide groove is provided with a guide groove connected to the avoidance groove. The guide groove is contracted in the return direction of the pusher to push the two pusher arms to close. As the base moves, the pusher arm will contact the inner wall of the guide groove and be gradually pushed by the inner wall of the guide groove, so that the two pusher arms are close to each other and close again.

[0046] The present invention also discloses another metal melting furnace with a stirring device. During the smelting process, the raw materials added to the molten metal can be retained on the raw material retaining portion, so that the raw materials can be immersed in the molten metal together with the raw material retaining portion, and will not float on the surface of the molten metal to avoid the raw materials coming into contact with air in a high-temperature environment, causing oxidation reactions and abnormal loss of raw materials. It will also increase the oxygen content in the molten metal, and the raw materials will not float on the surface of the molten metal or sink to the bottom of the molten metal, causing uneven composition of the molten metal. Under the action of the driving device, the stirring rod can drive the stirring blades and the raw material retaining portion to rotate to stir the molten metal, which can improve the uniformity of the raw materials in the molten metal, ensure the quality of the finished metal product, and prevent the occurrence of uneven quality. In addition, manual stirring is not required, which reduces the labor intensity of the operator and reduces the risk factor. In addition, automated stirring has a larger stirring range than manual stirring, avoiding quality problems caused by local areas of the molten metal not being stirred, and the stirring efficiency is also higher than manual operation, reducing the stirring operation time.

[0047] Furthermore, the raw material holding portion includes a shell, a cavity formed by the shell, and a through-hole provided in the shell and connected to the cavity, wherein the through-hole is smaller than the size of the raw material. The raw material is placed in the cavity. During stirring, molten metal can enter the cavity through the through-hole and fully contact the raw material. The molten metal mixed with the raw material components then flows out of the cavity through the through-hole and mixes with the external molten metal, so that the raw material is evenly distributed in the molten metal. Because the through-hole is smaller than the size of the raw material, the raw material can be retained in the cavity. As the raw material melts, when the size of the raw material is smaller than the through-hole, there is a certain probability that the raw material will leave the raw material holding portion through the through-hole. However, since the raw material size is already very small at this point, even if it floats on the surface of the molten metal or sinks to the bottom of the molten metal, it will not significantly affect the composition of the molten metal. Moreover, if the melting point of the molten metal is high, the raw material will completely melt before it floats on the surface of the molten metal or sinks to the bottom of the molten metal.

[0048] Furthermore, the cavity includes a feed zone and a melt zone. The housing is further provided with a feed hole communicating with the cavity to feed the feed zone. The bottom wall of the cavity is provided with a guide portion to guide the raw material from the feed zone to the melt zone. The feed hole communicates with the cavity to replenish the raw material holding portion after the raw material is consumed. The raw material enters the feed zone through the feed hole. Under the guidance of the guide portion, the raw material is immersed from the feed zone into the melt zone, thereby reducing the probability of the raw material leaving the raw material holding portion through the feed hole.

[0049] Furthermore, in the direction of rotation of the stirring rod, the front end of the stirring blade is higher than the rear end, thereby guiding the molten metal to flow from top to bottom during rotation. The stirring blade can guide the molten metal to flow from top to bottom during stirring, thereby preventing the molten metal at the bottom from flowing upward and causing impurities at the bottom of the molten metal to diffuse and reduce the quality of the finished product.

[0050] Furthermore, the stirring blades are provided below the raw material holding portion to guide the molten metal containing the raw material components downward during the stirring process. The raw material holding portion is located above the stirring blades. After melting, the raw material is distributed in the upper layer of the molten metal. The stirring blades can guide the molten metal downward, thereby guiding the upper layer of the molten metal containing a large amount of raw material components downward, thereby evenly distributing the raw material components.

[0051] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0052] The present invention will be further described below with reference to the accompanying drawings:

[0053] FIG1 is a schematic structural diagram of a metal melting furnace with a stirring device when a stirring plate is lowered according to an embodiment of the present invention;

[0054] FIG2 is a schematic structural diagram of a metal melting furnace with a stirring device when a stirring plate is raised according to an embodiment of the present invention;

[0055] FIG3 is a top view of a metal melting furnace with a stirring device according to an embodiment of the present invention;

[0056] FIG4 is a top view of a stirring plate according to an embodiment of the present invention;

[0057] FIG5 is a cross-sectional view of a stirring plate according to an embodiment of the present invention;

[0058] FIG6 is a cross-sectional view of the stirring plate when raw materials are fed into the feed hole according to an embodiment of the present invention;

[0059] FIG7 is a cross-sectional view of the stirring plate when the raw materials enter the cavity according to an embodiment of the present invention;

[0060] FIG8 is a cross-sectional view of the stirring plate when the raw material rolls below the first opening in an embodiment of the present invention;

[0061] FIG9 is a cross-sectional view of the stirring plate when not immersed in molten metal according to an embodiment of the present invention;

[0062] FIG10 is a cross-sectional view of a stirring plate immersed in molten metal according to an embodiment of the present invention;

[0063] 11 is a schematic structural diagram of an automatic feeder and a stirring device according to an embodiment of the present invention;

[0064] FIG12 is a schematic structural diagram of an automatic feeder according to an embodiment of the present invention;

[0065] 13 is a schematic structural diagram of the pusher when the push rod extends out of the base body according to an embodiment of the present invention;

[0066] 14 is a schematic structural diagram of the pusher when the push rod is retracted into the base body according to an embodiment of the present invention;

[0067] 15 is a schematic structural diagram of the pusher when the pusher arm is opened according to an embodiment of the present invention;

[0068] FIG16 is a schematic structural diagram of an embodiment of the present invention when the pusher arm is located in the avoidance groove;

[0069] FIG17 is a schematic structural diagram of an embodiment of the present invention when the pusher arm is located in the guide groove;

[0070] FIG18 is a schematic structural diagram of an embodiment of the present invention when the pusher is located in the chute and the pusher arm is retracted;

[0071] FIG19 is a schematic structural diagram of an automatic feeding device and a stirring device according to an embodiment of the present invention;

[0072] FIG20 is a schematic structural diagram of another automatic feeder according to an embodiment of the present invention;

[0073] FIG21 is a schematic structural diagram of another automatic feeder according to an embodiment of the present invention;

[0074] FIG22 is a schematic structural diagram of another automatic feeder according to an embodiment of the present invention;

[0075] FIG23 is a schematic structural diagram of another automatic feeder according to an embodiment of the present invention;

[0076] FIG24 is a schematic structural diagram of another automatic feeder according to an embodiment of the present invention;

[0077] Figure 25 is a schematic structural diagram of a material pushing mechanism according to an embodiment of the present invention;

[0078] FIG26 is a schematic structural diagram of another stirring device according to an embodiment of the present invention;

[0079] FIG27 is a top view of another stirring device in an embodiment of the present invention.

[0080] Reference numerals: Furnace body 100, cavity 110; stirring disk 200, feed hole 201, stirring rod 210, disk body 220, annular boss 230, drain port 240, outer annular wall 250, third opening 260, circular space 270, inner annular wall 280, radial opening 290; driving device 300, lifting power component 310, rotating power component 320, spline sleeve 330; raw material holding portion 400, cavity 410, feed area 411, melt area 412, first opening 420, second opening 430, baffle 440, stirring blade 450, housing 460, through hole 470; Automatic feeder 500, discharge channel 510, ascending section 511, descending section 512, protrusion 513, storage chamber 520, pusher 530, base 531, pusher arm 532, pusher rod 533, chute 534, avoidance hole 535, limiting groove 536, limiting protrusion 537, feeding channel 540, avoidance groove 550, guide groove 560, feed hopper 570, feed port 571, discharge port 572, buffer box 580, buffer channel 581, forward tilting section 5811, backward tilting section 5812, discharge port 5813, storage channel 582, through hole 583, pusher mechanism 590, driver 591, first driver 5911, second driver 5912, pusher 592, first pusher 5921, second pusher 5922; rotating frame 600; Feed channel 700 , feeding port 710 , and material guide trough 720 . [Specific implementation method]

[0081] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0082] When used herein, words such as "exemplary" and "some embodiments" mean "serving as an example, embodiment, or illustration." Any embodiment described as "exemplary" is not necessarily to be construed as superior or preferable to other embodiments. Numerous specific details are provided in the following detailed description to better illustrate the present invention. However, those skilled in the art will appreciate that the present disclosure may be practiced without these specific details.

[0083] 1 to 10 , an embodiment of the present invention discloses a metal melting furnace with a stirring device, comprising a furnace body 100 and a stirring device, wherein the furnace body 100 has a cavity 110 for accommodating molten metal, and the stirring device is used to fully blend the raw materials added to the cavity 110 with the molten metal so that the raw materials are evenly distributed in the molten metal. The stirring device comprises a stirring plate 200, a stirring rod 210 connected to the stirring plate 200, and a driving device 300 connected to the stirring rod 210. The stirring plate 200 has a raw material holding portion 400, and the driving device 300 can drive the stirring rod 210 to rise and fall so that the stirring plate 200 is immersed in or out of the molten metal in the cavity 110. The stirring plate 200 is provided with a plurality of vertically extending openings. During the stirring process, the raw materials in the raw material holding portion 400 are immersed in the molten metal together with the stirring plate 200 to melt in the molten metal, and the driving device 300 drives the stirring rod 210 to rise and fall.

[0084] During the smelting process of the metal melting furnace with a stirring device of the present invention, the raw materials added to the molten metal can be held on the stirring disk 200 by the raw material holding portion 400, so that the raw materials can be immersed in the molten metal together with the stirring disk 200, and will not float on the surface of the molten metal to avoid the raw materials from coming into contact with air in a high-temperature environment, causing oxidation reactions and abnormal loss of raw materials. It will also increase the oxygen content in the molten metal, and the raw materials will not float on the surface of the molten metal or sink to the bottom of the molten metal, causing uneven composition of the molten metal. Under the action of the driving device 300, the stirring rod 210 can be raised and lowered back and forth, so that the stirring disk 200 moves up and down in the molten metal, which can improve the uniformity of the raw materials in the molten metal, thereby ensuring the quality of the finished metal product and preventing uneven quality. In addition, manual stirring is not required, which reduces the labor intensity of the operator and reduces the risk factor. In addition, automated stirring has a larger stirring range than manual stirring, avoiding quality problems caused by local areas of the molten metal not being stirred, and the stirring efficiency is also higher than manual operation, reducing the stirring operation time.

[0085] The vertical through opening allows the molten metal to pass through the stirring plate 200, reducing the resistance encountered by the stirring plate 200 when it is raised and lowered in the molten metal, avoiding violent fluctuations of the molten metal and causing a large amount of diffusion of impurities at the bottom, so that the molten metal can flow relatively smoothly during the up and down movement of the stirring plate 200. Usually, since the bottom layer of the molten metal contains a large amount of impurities, the molten metal at the bottom will not participate in the casting process, but will always remain in the furnace until the furnace is scrapped. In the present application, since the impurities will not diffuse in large quantities during the melting process of the raw materials in the stirring plate 200, the quality of the molten metal that can be used for casting in the cavity 110 will not be affected. After stirring, there is no need to let the molten metal stand for a long time to wait for the impurities to sink, and no unnecessary energy waste will be generated (the energy required to maintain the liquid state of the metal during the standing process). At the same time, the smelting efficiency of the molten metal can be improved to improve production efficiency.

[0086] In the present application, the molten metal is molten copper and the raw material is zinc. In addition, the raw material may also be other elements or compounds, and the molten metal may also be molten iron, molten steel, etc.

[0087] Since the molten metal can cool down quickly after coming into contact with the air, it is not suitable to set movable parts on the stirring plate 200 to clamp the raw material, and the raw material cannot be clamped after the size is reduced. Referring to Figures 4 to 10, based on the above embodiments, in one embodiment of the present invention, the raw material holding portion 400 includes a cavity 410 for placing the raw material, and the opening includes a first opening 420 provided on the top wall of the cavity 410 and a second opening 430 provided on the bottom wall of the cavity 410. The size of the first opening 420 and the second opening 430 is smaller than the size of the raw material. During the stirring process, the molten metal can enter the cavity 410 through the first opening 420 and the second opening 430 and fully contact with the raw material. The molten metal mixed with the raw material components then flows out of the cavity 410 through the first opening 420 and the second opening 430 and mixes with the external molten metal, so that the raw material is evenly distributed in the molten metal. Since the size of the first opening 420 and the second opening 430 is smaller than the size of the raw material, the raw material can be retained in the cavity 410. As the raw material melts, when the size of the raw material is smaller than the first opening 420 and the second opening 430, there is a certain probability that the raw material will leave the stirring plate 200 from the first opening 420 and the second opening 430. However, since the size of the raw material is already very small at this time, even if it floats on the surface of the molten metal or sinks to the bottom of the molten metal, it will not have a significant impact on the composition of the molten metal. Moreover, if the melting point of the molten metal is high, the raw material will be completely melted before it floats on the surface of the molten metal or sinks to the bottom of the molten metal.

[0088] At the same time, a feed hole 201 connected to the cavity 410 is arranged on the upper surface of the stirring plate 200. The raw materials can be replenished into the cavity 410 through the feed hole 201. The size of the feed hole 201 is slightly larger than the size of the raw materials. The size of the feed hole 201 is 11 / 10 to 6 / 5 of the size of the raw materials, which can increase the difficulty of the raw materials leaving the cavity 410 from the feed hole 201.

[0089] In addition, the height of the bottom wall of the cavity 410 gradually decreases from the feed hole 201 to the first opening 420. In this application, the raw material is a spherical material. After the raw material is put into the cavity 410 from the feed hole 201, it can move along the bottom wall of the cavity 410 to the bottom of the first opening 420 under the action of its own gravity. In this way, if the density of the raw material is greater than the molten metal, the raw material can be maintained on the bottom wall of the cavity 410 during the up and down movement of the stirring plate 200, and will not leave the stirring plate 200 through the feed hole 201; if the density of the raw material is less than the molten metal, after the stirring plate 200 is immersed in the molten metal, the raw material will float up and resist the top wall of the cavity 410. Since the raw material is located below the first opening 420, it is not easy for the raw material to leave the stirring plate 200 through the feed hole 201 after floating up.

[0090] 5 to 10 , based on the above embodiments, in one embodiment of the present invention, the raw material holding portion 400 further includes a baffle 440, which extends from the top wall of the cavity 410 between the feed hole 201 and the first opening 420 to the bottom wall of the cavity 410. Both sides of the baffle 440 are connected to the side walls of the cavity 410. When the density of the raw material is lower than the density of the molten metal, the raw material will float up after the stirring plate 200 is immersed in the molten metal. By providing the baffle 440, the raw material can be blocked during the floating process, thereby restricting the raw material from moving toward the feed hole 201. When the raw material is not floating, it is located in a position within cavity 410 that is offset from feed hole 201. Due to the gentle flow of the molten metal surface, the raw material's floating path is close to a vertical line, making it difficult for the raw material to move toward feed hole 201 during the floating process. Even if the raw material has a tendency to move toward feed hole 201 during the floating process, it will be blocked by the lower end of baffle 440 after floating a certain distance, thus preventing the raw material and stirring plate 200 from separating during immersion in the molten metal. In addition, because the two sides of baffle 440 are connected to the side walls of cavity 410, the raw material cannot bypass baffle 440 and move toward feed hole 201.

[0091] 5 , a further technical solution is that the baffle 440 is tilted from top to bottom toward the feed hole 201 . After the baffle 440 is tilted, the blocking range of the lower end of the baffle 440 is improved, which can increase the blocking performance of the lower end of the baffle 440 for the raw materials, thereby improving reliability.

[0092] The minimum distance between the lower end of the baffle 440 and the bottom wall of the cavity 410 is L, the diameter of the raw material is R, and L is less than 1.2R. This design allows the raw material to be blocked by the baffle 440 after rising a short distance.

[0093] 11 , based on the above embodiment, in one embodiment of the present invention, the driving device 300 includes a lifting power component 310 and a rotating power component 320. A spline sleeve 330 is mounted on the stirring rod 210 and is spline-matched with the stirring rod 210. The rotating power component 320 is used to drive the spline sleeve 330 to rotate. The stirring rod 210 and the spline sleeve 330 are spline-matched, so the spline sleeve 330 does not restrict the lifting and lowering movement of the stirring rod 210 relative to the spline sleeve 330. The lifting power component 310 can generate power to drive the stirring rod 210 to move up and down, so that the stirring plate 200 is immersed in or out of the molten metal or moves the stirring plate 200 up and down in the molten metal. The rotating power component 320 can drive the spline sleeve 330 to rotate, thereby driving the stirring plate 200 to rotate in the molten metal through the spline sleeve 330, thereby improving the uniformity of the raw materials in the molten metal.

[0094] 4 to 10 , based on the above-described embodiments, in one embodiment of the present invention, the stirring disk 200 has a plurality of raw material holding portions 400 . Corresponding to the plurality of raw material holding portions 400 , the disk body 200 is provided with a plurality of feed holes 201 . The plurality of feed holes 201 are arranged at intervals along the circumference of the stirring disk 200 . By providing a plurality of raw material holding portions 400 , the amount of raw material that the stirring disk 200 can carry can be increased, thereby eliminating the need for multiple replenishments of raw material. Arranging the raw material holding portions 400 at intervals along the circumference of the stirring disk 200 allows replenishment of raw material at different locations within the molten metal, thereby uniformly melting the raw material in the molten metal without causing the molten metal to fluctuate or flow violently.

[0095] 5 to 11 , based on the above-mentioned embodiments, in one embodiment of the present invention, the stirring disk 200 includes a disk body 220 connected to a stirring rod 210 and an annular boss 230 provided at the bottom of the disk body 220. The height of the upper surface of the disk body 220 gradually decreases from the stirring rod 210 to the periphery. The upper surface of the disk body 220 has a guiding effect on the molten metal. When the stirring disk 200 moves upward, the molten metal above the stirring disk 200 can flow toward the periphery of the disk body 220 under the guidance of the upper surface of the disk body 220, thereby reducing the stirring force on the molten metal. Moreover, when the stirring disk 200 is in the process of leaving the molten metal, the molten metal remaining on the upper surface of the stirring disk 200 can be reduced to avoid blocking the opening after the molten metal is cooled.

[0096] A drain port 240 is formed at the intersection of the bottom wall of the cavity 410 and the side wall of the cavity 410 on the side near the second opening 430, and extends through the lower surface of the stirring plate 200. As the stirring plate 200 is discharging the molten metal, some of the molten metal in the cavity 410 can be discharged from the second opening 430 in the bottom wall of the cavity 410, while another portion of the molten metal flows along the bottom wall of the cavity 410 toward the side wall of the cavity 410, where it converges and is discharged from the drain port 240. This reduces the amount of molten metal remaining on the stirring plate 200.

[0097] The outer annular wall 250 of the annular boss 230 is connected to the periphery of the disc body 220, and the opening also includes a third opening 260. The third opening 260 is provided on the disc body 220 at a position corresponding to the circular space 270 surrounded by the annular boss 230. The bottom end of the annular boss 230 is connected to its outer annular wall 250 through a conical surface, and the bottom end of the annular boss 230 is also connected to the top wall of the circular space 270 through a conical surface, so that the lower end of the annular boss 230 is contracted from top to bottom, and the circular space 270 is gradually expanded from top to bottom.

[0098] The annular boss 230 protrudes from the bottom of the disk body 220. When the stirring disk 200 is immersed in the molten metal, the annular boss 230 contacts the molten metal before the disk body 220. Since the lower end of the annular boss 230 is in a contracted shape, the annular boss 230 has little agitation on the molten metal during immersion, thereby preventing the molten metal from experiencing violent fluctuations. The outer annular wall 250 of the annular boss 230 is connected to the periphery of the disk body 220, so that the periphery of the disk body 220 does not protrude from the annular boss 230. This reduces the agitation of the molten metal by the edge of the disk body 220 when immersed in the molten metal, thereby preventing the formation of vortices around the stirring disk 200. As the annular boss 230 is completely immersed in the molten metal, the top wall of the circular space 270 will contact the molten metal. By providing the third opening 260, the molten metal can pass through the third opening 260, reducing the agitation of the molten metal by the stirring disk 200. In addition, the circular space 270 can reduce the overall weight of the stirring plate 200 and reduce the load of the driving device 300. The sidewalls of the circular space 270 guide the molten metal and can reduce the stirring force of the top wall of the circular space 270 on the molten metal.

[0099] The inner annular wall 280 and the outer annular wall 250 of the annular boss 230 are further provided with radial openings 290 communicating with the cavity 410 , so as to facilitate the circulation of the molten metal in the cavity 410 .

[0100] 4 to 10 , based on the above embodiments, in one embodiment of the present invention, a plurality of third openings 260 are provided on the top wall of the circular space 270. The plurality of third openings 260 are arranged at intervals along the circumference of the stirring rod 210, and the plurality of third openings 260 are arranged into multiple groups along concentric circles. As shown in FIG4 , two groups of third openings are provided on the stirring disk 200 in FIG4 , one group having three third openings 260 and the other group having six third openings 260. Among the multiple groups of third openings, the height of the top wall of the circular space 270 surrounding one group of third openings is higher than the rest of the top wall of the circular space 270 (as shown in FIG4 , the group of third openings closer to the stirring rod in the two groups of third openings in FIG4 is at the highest position). Therefore, when the stirring disk 200 is immersed in the molten metal, the air in the circular space 270 can be discharged through the group of third openings.

[0101] 11 to 13 , based on the above embodiments, in one embodiment of the present invention, the metal melting furnace further includes an automatic feeder 500 for replenishing raw materials to the raw material holding portion 400 , and the rotating power component 320 drives the stirring disk 200 to rotate intermittently to replenish raw materials to each raw material holding portion 400 . The automatic feeder 500 can automatically replenish raw materials to the stirring disk 200 , thereby eliminating the need for manual feeding, thereby improving the safety factor of the operation and also helping to improve the operation efficiency. Since a plurality of raw material holding portions 400 are arranged on the stirring disk 200 , during the raw material replenishment process, the stirring disk 200 is driven to rotate by the rotating power component 320 , and the raw material holding portion 400 corresponding to the automatic feeder 500 can be switched to replenish raw materials to each raw material holding portion 400 one by one. During the feeding process, the stirring disk 200 rotates intermittently, so that when the raw materials fall into the cavity 410 , the stirring disk 200 and the automatic feeder 500 are relatively stationary, thereby preventing the raw materials from shifting when falling.

[0102] The automatic feeder 500 includes a discharge channel 510, a storage chamber 520 connected to the discharge channel 510, and a pusher 530. The pusher 530 is used to push the raw materials in the discharge channel 510 so that the raw materials fall onto the raw material holding portion 400. The storage chamber 520 is connected to the discharge channel 510, so that the raw materials in the storage chamber 520 can enter the discharge channel 510. The pusher 530 can push the raw materials in the discharge channel 510, so that the raw materials are pushed out of the discharge channel 510 and enter the cavity 410 through the feed hole 201, thereby realizing automatic replenishment of raw materials.

[0103] In the above, the discharge channel 510 includes an ascending section 511 and a descending section 512. The bottom walls of the ascending section 511 and the descending section 512 are both inclined surfaces. From the ascending section 511 to the descending section 512, the bottom wall of the ascending section 511 is an upward inclined surface, so that the raw materials can remain in the ascending section 511 and will not enter the descending section 512 on their own. The bottom wall of the descending section 512 is a descending inclined surface in the direction away from the ascending section 511. After the pusher 530 pushes the raw materials from the ascending section 511 to the descending section 512, the raw materials can roll along the bottom wall of the descending section 512 under the action of their own gravity and leave the discharge channel 510.

[0104] A plurality of raw materials can be stored in the ascending section 511 . During the return stroke of the pusher 530 , the raw materials in the ascending section 511 also have a tendency to reset, which will affect the replenishment of raw materials from the storage chamber 520 to the discharge channel 510 . In order to solve this problem, specifically, the pusher 530 includes a base 531, two pushing arms 532 rotatably mounted on the base 531 and a pushing rod 533 for pushing the base 531. The automatic feeder 500 also includes a slide groove 534 connected to the discharge channel 510 for the pusher 530 to enter and exit the discharge channel 510. The two pushing arms 532 are closed when pushing to push the raw materials. The two pushing arms 532 can also form an avoidance hole 535 when closed. The storage chamber 520 is located above the discharge channel 510. The storage chamber 520 is connected to the discharge channel 510 through the vertical feeding channel 540. The raw materials in the storage chamber 520 enter the discharge channel 510 through the avoidance hole 535. When the pusher 530 returns, the two pushing arms 532 open to separate from the raw materials in the avoidance hole 535. The pushing rod 533 can push the base 531 and drive the pushing arm 532 to move. The pushing arm 532 can extend from the chute 534 as the base 531 extends and enters the discharge channel 510. During the pushing process, the pushing arm 532 remains in a closed state and can push the raw materials in the discharge channel 510, so that the raw materials move forward and fall from the discharge channel 510 to the raw material holding part 400. Since the two pushing arms 532 can form an avoidance hole 535 when closed, the raw materials in the feeding channel 540 can fall and pass through the avoidance hole 535 and enter the discharge channel 510 during the process of the pushing arm 532 pushing the raw materials, completing the replenishment of the raw materials in the discharge channel 510. When the pusher 530 returns, the two pushing arms 532 open and separate from the raw materials, and the pushing arms 532 can retract into the chute 534.

[0105] The portion where the ascending section 511 connects to the descending section 512 has a raised portion 513. The raised portion 513 has a blocking effect on the raw material. The raw material can pass over the raised portion 513 and enter the descending section 512 during the pushing process. The raised portion 513 can prevent the raw material from entering the descending section 512 on its own. The upper surface of the raised portion 513 is a convex arc surface.

[0106] 12 to 18 , based on the above embodiments, in one embodiment of the present invention, when pushing materials, the end of the pushing rod 533 extends from the base 531 to between the two pushing arms 532 to stop the rotation of the pushing arms 532. During the return stroke, the end of the pushing rod 533 retracts into the base 531. After the raw material pushes the two pushing arms 532 to open, the pusher 530 is separated from the raw material. The side wall of the discharge channel 510 is provided with an avoidance groove 550 for avoiding the pushing arms 532. The side wall of the slide 534 is provided with a guide groove 560 connected to the avoidance groove 550. In the direction of the return stroke of the pusher 530, the guide groove 560 is contracted to push the two pushing arms 532 to close. The end of the push rod 533 can extend out of the base 531 during the pushing process. The end of the push rod 533 is located between the two push arms 532 and can stop the two push arms 532, limiting the rotation of the two push arms 532 so that the two push arms 532 can remain closed and push the material to move. During the return stroke, since the end of the push rod 533 is retracted into the base 531, the rotation of the two push arms 532 will not be restricted, and the size of the material is larger than the size of the chute 534 and cannot enter the chute 534. Therefore, during the return stroke of the pusher 530, There is a mutual squeezing force between the pushing arms 532 and the raw material, and the squeezing force causes the two pushing arms 532 to move away from each other and open, thereby separating from the raw material. The avoidance groove 550 can provide space for the pushing arms 532 to open, and the guide groove 560 is connected to the avoidance groove 550, so that the opened pushing arms 532 can enter the guide groove 560 from the avoidance groove 550. As the base 531 moves, the pushing arms 532 will contact the inner wall of the guide groove 560 and be gradually pushed by the inner wall of the guide groove 560, so that the two pushing arms 532 are close to each other and closed again.

[0107] A limiting groove 536 is provided in the base 531, and a limiting protrusion 537 is provided on the push rod 533. The limiting protrusion 537 can abut against the inner wall of the limiting groove 536 to keep the push rod 533 on the base 531. The push rod 533 can be extended and retracted relative to the base 531. After the push rod 533 is extended and retracted, the limiting protrusion 537 abuts against the inner wall of the limiting groove 536 so that the push rod 533 can drive the base 531 to move together.

[0108] 1 to 3 , based on the above embodiments, in one embodiment of the present invention, a metal melting furnace with a stirring device further comprises a rotating frame 600 rotatably mounted on the furnace body 100, the stirring device being arranged on the rotating frame 600, the automatic feeder 500 being arranged on the side of the furnace body 100, and the rotating frame 600 driving the stirring disk 200 to rotate to the bottom of the automatic feeder 500 for replenishing raw materials. When the rotating frame 600 rotates, it can rotate with the stirring disk 200, so that the stirring disk 200 can be aligned with the automatic feeder 500 for automatic feeding. After the stirring disk 200 completes the replenishment of raw materials into the molten metal, the rotating frame 600 can also transfer the stirring disk 200 to the outside of the furnace body 100 for cooling, thereby preventing the stirring disk 200 from maintaining a high temperature under the action of the high temperature of the molten metal, and preventing the raw materials from being oxidized under the action of the high temperature during the feeding process of the stirring disk 200.

[0109] As shown in FIG19 , unlike the above-described embodiment, another embodiment of the present invention further discloses another stirring device and an automatic feeding device capable of replenishing raw materials to the raw material holding portion 400. The automatic feeding device includes a feeding channel 700 provided in the stirring rod 210 along the axis of the stirring rod 210 and a feeding port 710 connected to the feeding channel 700. The cavity 410 of the raw material holding portion 400 is connected to the feeding channel 700. When replenishing raw materials, the raw materials are added to the feeding channel 700 through the feeding port 710, so that the raw materials fall along the feeding channel 700 and are replenished into the cavity 410. The bottom wall of the feeding channel 700 is convexly curved to guide the raw materials toward the raw material holding portion 400.

[0110] The feed hole 201 is located on the side of the cavity 410 near the stirring rod 210, and the feed hole 201 is connected to the feed channel 700. The cavity 410 is annular, and the baffle 440 on the top wall of the cavity 410 is an annular rib. During the feeding process, the stirring rod 210 can rotate, causing the raw materials entering the cavity 410 to roll within the cavity 410, ensuring uniform distribution of the raw materials and preventing the raw materials from blocking the feed hole 201 and accumulating in the feed channel 700. The bottom wall of the cavity 410 gradually slopes downward from the stirring rod 210 to prevent the raw materials from accumulating near the feed hole 201. The outer side of the stirring rod 210 has a material guide trough 720 connected to the feeding port 710. External raw material storage equipment can transfer the raw materials to the material guide trough 720, which then guides the raw materials into the feed channel 700.

[0111] As shown in Figure 20, an embodiment of the present invention also discloses another automatic feeder 500, which includes a feed hopper 570, a cache box 580 and a pushing mechanism 590. The feed hopper 570 is provided with a feed port 571 and a discharge port 572. The cache box 580 is provided with a cache channel 581. One end of the cache channel 581 is provided with a discharge port 5813 connected to the discharge port 572, and the other end of the cache channel 581 is connected to the feed hole 201 of the raw material holding portion 400; the pushing mechanism 590 is used to push the raw materials in the cache channel 581 into the feed hole 201 of the raw material holding portion 400 in sequence, and the pushing mechanism 590 includes a driver 591 and a pushing member 592. The driver 591 drives the pushing member 592 to reciprocate in the cache channel 581, so as to push the raw materials in the cache channel 581 into the feed hole 201 in sequence through the reciprocating motion of the pushing member 592.

[0112] In the above technical solution, the raw materials can be poured into the feed hopper 570 through the feed port 571. When the raw materials are added to the feed hopper 570, they can be added manually or automatically by a machine. The raw materials in the feed hopper 570 enter the cache channel 581 in sequence through the discharge port 572, and then the raw materials in the cache channel 581 are pushed into the feed hole 201 in sequence through the pushing mechanism 590. Each time the pushing member 592 makes a reciprocating motion, a certain amount of raw materials can be pushed in. By controlling the number of reciprocating motions of the pushing member 592, the amount of raw materials added can be accurately controlled. Since the quality of each raw material is basically the same, the above solution can achieve accurate control of the amount of raw material added. The driver 591 is fixed to the outer wall of the cache box 580, and the pushing member 592 is slidably connected to the cache box 580.

[0113] The buffer box 580 is further provided with a plurality of inclined storage channels 582. The plurality of storage channels 582 are arranged in sequence in the vertical direction. The lower end of the upper storage channel 582 of two adjacent storage channels 582 is connected to the upper end of the lower storage channel 582. The lowermost storage channel 582 is arranged above the buffer channel 581. The upper end of the uppermost storage channel 582 is connected to the discharge port 572, and the lower end of the storage channel 582 is connected to the buffer channel 581. The storage channels 582 can store a portion of raw materials, thereby increasing the amount of pre-stored raw materials.

[0114] The inner walls of the buffer channel 581 and the material storage channel 582 are each provided with a plurality of through-holes 583, allowing the high-temperature gas within the furnace body 100 to enter the buffer box 580 and then enter the buffer channel 581 and the material storage channel 582 through the through-holes 583. This allows the high-temperature gas to preheat the raw materials within the buffer box 580, making full use of the heat of the high-temperature gas exhausted from the furnace body 100, saving energy. Furthermore, after the raw materials are heated, the melting time after being placed in the cavity 110 can be reduced, thereby improving efficiency. The buffer box 580 is provided with an exhaust port for exhausting the high-temperature gas.

[0115] As shown in Figure 21, based on the above embodiment, in one embodiment of the present invention, the pushing member 592 is arranged below the discharge port 5813, and the cache channel 581 includes a forward inclined section 5811 and a backward inclined section 5812. The forward inclined section 5811 is arranged on the side close to the pushing mechanism 590, and the backward inclined section 5812 is arranged on the side close to the feed hole 201. The bottom surface of the forward inclined section 5811 is inclined from high to low in the direction of the raw material holding portion 400, and the bottom surface of the backward inclined section 5812 is inclined from low to high in the direction of the raw material holding portion 400.

[0116] The bottom surface of the forward-inclined section 5811 is tilted from high to low toward the material holding portion 400, which allows the material in the forward-inclined section 5811 to move toward the material holding portion 400. When the pusher 592 retracts, the material is prevented from moving backward, allowing the material in the storage channel 582 to smoothly fall into the buffer channel 581. The bottom surface of the backward-inclined section 5812 is tilted from low to high toward the material holding portion 400. When the pusher 592 extends, the material in the backward-inclined section 5812 that has not been pushed toward the material holding portion 400 is prevented from rushing out of the buffer channel 581 due to inertia.

[0117] The forward inclined section 5811 and the rearward inclined section 5812 may be directly connected or connected via a horizontal section arranged horizontally.

[0118] As shown in Figures 22 and 23, based on the above embodiments, in one embodiment of the present invention, the height of the upper end surface of the pushing member 592 relative to the bottom surface of the cache channel 581 is h1, and the height of the raw material in the cache channel 581 relative to the bottom surface of the cache channel 581 is h2, h2 ≥ h1, so that when the pushing member 592 is pushed out, at least part of the raw material above the cache channel 581 enters the cache channel 581 and contacts the upper end surface of the pushing member 592.

[0119] When the pushing piece 592 is pushed out, it will push the raw materials below the discharge port 5813 forward. When the pushing piece 592 retracts, the raw materials will follow the pushing piece 592 and roll back to directly below or diagonally below the discharge port 5813. The rolled-back raw materials will block the raw materials above the discharge port 5813 from falling, causing the raw materials above the discharge port 5813 to be unable to fall into the cache channel 581 and get stuck at the discharge port 5813. The raw materials in the cache channel 581 are not replenished. When the pushing piece 592 is continued to be pushed out, since the cache channel 581 is not replenished with new raw materials, the raw materials cannot be pushed from the cache channel 581 into the raw material holding part 400, causing the automatic feeder 500 to be unable to add materials accurately and smoothly. In this embodiment, when the pushing piece 592 is extended, the raw material in the cache channel 581 can be pushed into the feed hole 201. At the same time, the raw material above the pushing piece 592 will enter the cache channel 581 through the discharge port 5813 and contact the upper end surface of the pushing piece 592. Then, when the pushing piece 592 is retracted, the raw material that has fallen on the pushing piece 592 can prevent the raw material in the cache channel 581 from retreating. After the pushing piece 592 is retracted, the raw material on the pushing piece 592 can continue to move downward under the action of gravity and contact the bottom surface of the cache channel 581 to complete the feeding.

[0120] Preferably, h2 ≥ 2h1. This solution allows as much raw material as possible above the pushing member 592 to fall into the buffer channel 581 when the pushing member 592 is extended, thereby increasing the blocking effect of the raw material above the pushing member 592 on the raw material in the buffer channel 581, and allowing the raw material above the discharge port 5813 to enter the buffer channel 581 more smoothly. In order to prevent the raw material in the buffer channel 581 from rolling into the raw material holding portion 400 when the pushing member 592 is not pushing the raw material, the bottom surface of the buffer channel 581 is tilted from low to high toward the direction of the raw material holding portion 400.

[0121] As shown in Figures 24 and 25, based on the above embodiment, in another embodiment of the present invention, the pushing mechanism 590 includes a first driver 5911, a second driver 5912, a first pushing member 5921 and a second pushing member 5922. The first driver 5911 drives the first pushing member 5921 to reciprocate in the cache channel 581, and the second driver 5912 drives the second pushing member 5922 to reciprocate in the cache channel 581. The first pushing member 5921 and the second pushing member 5922 are arranged side by side below the discharge port 5813. The second pushing member 5922 The height is lower than that of the first pushing piece 5921, the height of the upper end surface of the second pushing piece 5922 relative to the bottom surface of the cache channel 581 is h3, and the height of the raw material in the cache channel 581 relative to the bottom surface of the cache channel 581 is h2, 3h3≤h2≤4h3; when pushing the material, the first pushing piece 5921 and the second pushing piece 5922 are pushed out at the same time. After the raw material in the cache channel 581 is pushed out, the first pushing piece 5921 retracts first to allow at least part of the raw material above the cache channel 581 to enter the cache channel 581 and contact the upper end surface of the second pushing piece 5922.

[0122] In order to prevent the rolled-back raw materials from blocking the raw materials above the discharge port 5813 from falling, the raw materials above the discharge port 5813 cannot fall into the cache channel 581 and are stuck at the discharge port 5813. In this embodiment, when material needs to be added, the first pushing piece 5921 and the second pushing piece 5922 are extended at the same time, and the raw material at the front of the cache channel 581 can be pushed into the feed hole 201. Then the first pushing piece 5921 is retracted and the second pushing piece 5922 remains stationary to prevent the raw material in the cache channel 581 from retreating. At the same time, the raw material above the cache channel 581 is at least partially allowed to enter the cache channel 581 and contact the upper end surface of the second pushing piece 5922. At this time, the raw material that has partially fallen into the cache channel 581 can prevent the raw material originally in the cache channel 581 from rolling back. Then the second pushing piece 5922 is retracted. Since the raw material on the second pushing piece 5922 is already at least partially in the cache channel 581, it is not easily stuck by the raw material in the cache channel 581. Therefore, the raw material on the second pushing piece 5922 can continue to move downward under the action of gravity and contact the bottom surface of the cache channel 581 to complete the feeding.

[0123] Since the first pusher 5921 and the second pusher 5922 extend at the same time, it is possible to ensure that the raw materials in the cache channel 581 are pushed into the feed hole 201. After the first pusher 5921 and the second pusher 5922 extend, it is only necessary to limit the raw materials in the cache channel 581 to prevent them from moving backward, and there is no need to provide power to push the raw materials. Therefore, the height of the second pusher 5922 can be set lower, specifically, h3≤h2 / 3, that is, 3h3≤h2. After the height of the second pusher 5922 is set lower, it can be ensured that after the first pusher 5921 retracts, the portion of the raw materials above the cache channel 581 that falls into the cache channel 581 is sufficient to prevent the raw materials in the falling cache channel 581 from rolling back and to completely fall into the cache channel 581 after the second pusher 5922 retracts. If the height of the second pushing piece 5922 is too low, the raw materials in the cache channel 581 may roll over the pushing piece 592, resulting in the inability to prevent the raw materials from rolling back. Therefore, in order to ensure the limiting effect, the second pushing piece 5922 needs to have a certain height, specifically, h2 / 4≤h3, that is, h2≤4h3.

[0124] 26 and 27 , the present invention further discloses another metal melting furnace with a stirring device, including a furnace body 100 and a stirring device. The furnace body 100 has a cavity 110 for accommodating molten metal. The stirring device includes a stirring rod 210 and a driving device. The stirring rod 210 is provided with a raw material holding portion 400 and a stirring blade 450. The driving device is transmission-connected to the stirring rod 210 for driving the stirring rod 210 to rotate and lift, so that the raw material holding portion 400 and the stirring blade 450 are immersed in the molten metal to rotate and stir the molten metal. During the stirring process, the raw material is held on the raw material holding portion 400 so that the raw material moves along with the raw material holding portion 400 and melts in the molten metal.

[0125] The principle of the driving device driving the stirring rod to rise, fall and rotate is the same as that disclosed in the above embodiment.

[0126] During the smelting process, the raw materials added to the molten metal can be kept on the raw material holding part 400, so that the raw materials can be immersed in the molten metal together with the raw material holding part 400, and will not float on the surface of the molten metal to avoid the raw materials from coming into contact with air in a high-temperature environment, causing oxidation reactions, resulting in abnormal loss of raw materials, and will also increase the oxygen content in the molten metal. The raw materials will not float on the surface of the molten metal or sink to the bottom of the molten metal, resulting in uneven composition of the molten metal. Under the action of the driving device, the stirring rod 210 can drive the stirring blades 450 and the raw material holding part 400 to rotate to stir the molten metal, which can improve the uniformity of the raw materials in the molten metal, ensure the quality of the finished metal product, prevent the occurrence of uneven quality, and do not require manual stirring, thereby reducing the labor intensity of the operator and reducing the risk factor. In addition, automated stirring has a larger stirring range than manual stirring, avoiding quality problems caused by local areas of the molten metal not being stirred, and the stirring efficiency is also higher than manual operation, reducing the stirring operation time.

[0127] The raw material holding portion 400 includes a housing 460, a cavity 410 formed by the housing 460, and a through-hole 470 provided in the housing 460 and connected to the cavity 410. The through-hole 470 is smaller than the raw material. The raw material is placed in the cavity 410. During the stirring process, molten metal can enter the cavity 410 through the through-hole 470, where it comes into full contact with the raw material. The molten metal, mixed with the raw material components, then flows out of the cavity 410 through the through-hole 470 and mixes with the external molten metal, ensuring that the raw material is evenly distributed throughout the molten metal. Because the through-hole 470 is smaller than the raw material, the raw material can be retained in the cavity 410. As the raw material melts, there is a certain probability that the raw material will escape the raw material holding portion 400 through the through-hole 470 when the raw material size is smaller than the through-hole 470. However, since the raw material size is already small at this point, even if it floats on the surface of the molten metal or sinks to the bottom of the molten metal, it will not significantly affect the composition of the molten metal. Furthermore, if the molten metal has a high melting point, the raw material will completely melt before it floats on the surface of the molten metal or sinks to the bottom of the molten metal.

[0128] Along the circumferential direction of the stirring rod 210, multiple raw material holding parts 400 and stirring blades 450 are arranged at intervals. Multiple raw material holding parts 400 can increase the amount of raw materials put into the molten metal at one time. Setting multiple stirring blades 450 can improve the stirring efficiency of the molten metal and improve the uniformity of the distribution of the raw materials in the molten metal.

[0129] Cavity 410 includes a feed zone 411 and a melt zone 412. Shell 460 is further provided with a feed hole 201 that communicates with cavity 410 to feed material into feed zone 411. The bottom wall of cavity 410 is provided with a guide portion that guides the raw material from feed zone 411 to melt zone 412. The guide portion has an inclined surface. Feed hole 201 communicates with cavity 410 to replenish the raw material holding portion 400 after the raw material is consumed. Raw material enters feed zone 411 through feed hole 201. After being dropped into cavity 410 through feed hole 201, the raw material can move from feed zone 411 to melt zone 412 along the guide portion under the action of its own gravity, thereby reducing the probability of the raw material leaving the raw material holding portion 400 through feed hole 201.

[0130] In the direction of rotation of the stirring rod 210 (in FIG. 26 , the arrow on the stirring rod 210 indicates the direction of rotation of the stirring rod 210 ), the front end of the stirring blade 450 is higher than the rear end. This guides the molten metal to flow downward during rotation, thereby preventing the molten metal at the bottom from flowing upward and causing impurities at the bottom of the molten metal to diffuse and reduce the quality of the finished product. The stirring rod 210 can drive the stirring blade 450 to rotate at a slow speed, ensuring a smooth flow of the molten metal without causing the bottom molten metal to surge upward.

[0131] Preferably, the raw material holding portion 400 is located above the stirring blade 450, which can facilitate the replenishment of raw materials to the raw material holding portion 400. After melting, the raw materials are distributed in the upper layer of the molten metal. In the process of stirring the molten metal by the stirring blade 450, the upper layer of the molten metal containing a large amount of raw material components can be guided downward to make the raw material components evenly distributed.

[0132] Of course, the raw material holding portion can also be arranged below the stirring blade. Under the action of the stirring blade, the flow rate of the molten metal passing through the raw material holding portion can be increased, which is beneficial to the diffusion of the raw material.

[0133] In addition, the raw material holding part can also be arranged between two layers of stirring blades. The stirring blades on the upper layer can increase the flow rate of the molten metal through the raw material holding part, and the stirring blades on the lower layer can make the molten metal containing the raw material components flow downward and diffuse.

[0134] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A metal melting furnace with a stirring device, characterized in that: include: A furnace body having a cavity for containing molten metal; A stirring device comprises a stirring disk and a driving device, wherein the stirring disk comprises a disk body, a raw material holding portion and a feeding hole for replenishing raw materials to the raw material holding portion, the disk body is connected to a stirring rod, the disk body and / or the raw material holding portion are provided with a plurality of vertically penetrating openings, the driving device is transmission-connected to the stirring rod, the driving device is used to drive the stirring rod to rise and fall so that the stirring disk is immersed in or leaves the molten metal in the cavity, and the raw material holding portion holds the raw material on the stirring disk so that the raw material moves together with the stirring disk.

2. The metal melting furnace with a stirring device according to claim 1, characterized in that: The raw material holding portion includes a cavity for placing the raw material, the feed hole is connected to the cavity, and the opening includes a first opening arranged on the top wall of the cavity and a second opening arranged on the bottom wall of the cavity, and the size of the first opening and the second opening is smaller than the size of the raw material.

3. The metal melting furnace with a stirring device according to claim 2, characterized in that: The height of the bottom wall of the cavity gradually decreases from the feed hole toward the first opening, and the raw material fed into the cavity from the feed hole moves along the bottom wall of the cavity to below the first opening.

4. The metal melting furnace with a stirring device according to claim 3, characterized in that: The raw material holding portion further includes a baffle, which is formed by extending from the top wall of the cavity between the feed hole and the first opening to the bottom wall of the cavity, and two sides of the baffle are connected to the side walls of the cavity.

5. The metal melting furnace with a stirring device according to claim 4, characterized in that: The baffle is inclined from top to bottom toward the feed hole.

6. The metal melting furnace with a stirring device according to claim 1, characterized in that: The stirring disk further comprises an annular boss arranged at the bottom of the disk body, the outer ring wall of the annular boss is connected to the periphery of the disk body, and the lower end of the annular boss is contracted from top to bottom.

7. The metal melting furnace with a stirring device according to claim 6, characterized in that: The opening further comprises a third opening, and the third opening is arranged at a position on the disk body corresponding to the circular space surrounded by the annular boss.

8. The metal melting furnace with a stirring device according to claim 6, characterized in that: The circular space gradually expands from top to bottom.

9. The metal melting furnace with a stirring device according to claim 6, characterized in that: The height of the upper surface of the disk body gradually decreases from the stirring rod to the periphery.

10. The metal melting furnace with a stirring device according to claim 1, characterized in that: The metal melting furnace further includes an automatic feeder for replenishing raw materials to the raw material holding part.

11. The metal melting furnace with a stirring device according to claim 10, characterized in that: The automatic feeder comprises a discharge channel, a storage cavity connected to the discharge channel, and a pusher, wherein the pusher is used for pushing the raw materials in the discharge channel so that the raw materials fall onto the raw material holding portion.

12. The metal melting furnace with a stirring device according to claim 11, characterized in that: The pusher includes a base, two pusher arms rotatably mounted on the base, and a pusher rod for pushing the base. The automatic feeder also includes a slide groove connected to the discharge channel for allowing the pusher to enter and exit the discharge channel. The storage chamber is located above the discharge channel, and the storage chamber is connected to the discharge channel through a feeding channel.

13. The metal melting furnace with a stirring device according to claim 12, characterized in that: The two pusher arms are closed to push the raw material, and the two pusher arms form an avoidance hole when closed. The raw material in the feeding channel passes through the avoidance hole and enters the discharge channel. When the pusher returns, the two pusher arms are opened to separate from the raw material in the avoidance hole.

14. The metal melting furnace with a stirring device according to claim 13, characterized in that: When pushing materials, the end of the pusher rod extends from the base to between the two pusher arms to stop the rotation of the pusher arms. When returning, the end of the pusher rod retracts into the base. After the raw material pushes the two pusher arms to open, the pusher is separated from the raw material. The side wall of the discharge channel is provided with an avoidance groove for avoiding the pusher arm, and the side wall of the slide groove is provided with a guide groove connected to the avoidance groove. The guide groove is in a contracted shape in the return direction of the pusher to push the two pusher arms to close.

15. A metal melting furnace with a stirring device, characterized in that: include: A furnace body having a cavity for containing molten metal; The stirring device comprises a stirring rod and a driving device, wherein a raw material holding portion and stirring blades are radially arranged on the outer side wall of the stirring rod, and the driving device is transmission-connected with the stirring rod for driving the stirring rod to rotate and lift, so that the raw material holding portion and the stirring blades are immersed in the molten metal to rotate and stir the molten metal, and the raw material is held on the raw material holding portion so that the raw material moves together with the raw material holding portion.

16. The metal melting furnace with a stirring device according to claim 15, characterized in that: The raw material holding portion includes a shell, a cavity formed by the shell, and a through hole provided on the shell and communicating with the cavity, wherein a size of the through hole is smaller than a size of the raw material.

17. The metal melting furnace with a stirring device according to claim 16, characterized in that: The cavity includes a feed area and a melt area. The shell is also provided with a feed hole connected to the cavity to feed the feed area. The bottom wall of the cavity is provided with a guide portion to guide the raw materials from the feed area to the melt area.

18. The metal melting furnace with a stirring device according to claim 17, characterized in that: In the rotation direction of the stirring rod, the front end of the stirring blade is higher than the rear end, so as to guide the molten metal to flow from top to bottom during the rotation process.

19. The metal melting furnace with a stirring device according to claim 18, characterized in that: The stirring blade is arranged below the raw material holding portion to guide the molten metal with raw material components downward during the stirring process.

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