Automatic charging device for furnace

Abstract

The present invention relates to the technical field of copper processing. Disclosed is an automatic charging device for a furnace, comprising a feed hopper provided with a feed inlet and a discharge outlet; a buffer box in which a buffer channel is provided, one end of the buffer channel being provided with a discharge port in communication with the discharge outlet, and the other end of the buffer channel being communicated with a feed port of the furnace; and a material pushing mechanism used for sequentially pushing raw materials in the buffer channel into the feed port of the furnace, the material pushing mechanism comprising a driver and a material pushing member, and the driver drives the material pushing member to perform reciprocating motion in the buffer channel, so that the raw materials in the buffer channel are sequentially pushed into the feed port by means of the reciprocating motion of the material pushing member. The described solution can achieve automatic charging of raw materials in the furnace, can reduce the labor intensity of workers, and achieve precise control of the quantity of raw materials added.

Description

Automatic feeding device for stove Technical Field

[0001] The invention relates to the technical field of copper processing, in particular to an automatic feeding device for furnaces. Background Art

[0002] During the production process of traditional horizontal continuous casting furnaces for copper and copper alloy tubes and strip, zinc is often added to the furnace to adjust the zinc content of the molten copper and ensure the quality of the cast product. In the existing technology, a certain amount of zinc is weighed and then manually added to the furnace. This process requires workers to endure high temperatures inside the furnace and is labor-intensive, making it very unfriendly for workers.

[0003] Summary of the Invention

[0004] In order to overcome the deficiency in the prior art that the process of adding raw materials to the stove needs to be done manually, the present invention provides an automatic feeding device for the stove, which can realize automatic feeding of raw materials in the stove, reduce the labor intensity of workers, and accurately control the amount of raw materials added.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic charging device for a stove, comprising:

[0007] A feed hopper, which is provided with a feed inlet and a discharge outlet;

[0008] A cache box is provided with a cache channel therein, one end of the cache channel is provided with a feed port connected to the discharge port, and the other end of the cache channel is connected to the feed port of the furnace;

[0009] The pushing mechanism is used to push the raw materials in the cache channel into the feeding port of the furnace in sequence. The pushing mechanism includes a driver and a pushing piece. The driver drives the pushing piece to reciprocate in the cache channel, so that the raw materials in the cache channel are pushed into the feeding port in sequence through the reciprocating motion of the pushing piece.

[0010] In the above technical solution, the raw materials that need to be added to the furnace can be poured into the feed hopper through the feed port first, and the raw materials in the feed hopper enter the cache channel in turn through the discharge port, and then the raw materials in the cache channel are pushed into the feeding port in turn by the pushing mechanism. Each time the pusher makes a reciprocating motion, a certain amount of raw materials can be pushed in. By controlling the number of reciprocating motions of the pusher, 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, and by controlling the speed of the reciprocating motion of the pusher, the speed of adding raw materials can be controlled, so that the raw materials can be added to the furnace at a uniform speed or in a regular and quantitative manner according to process requirements.

[0011] Preferably, the cache box is further provided with an inclined storage channel, which is arranged above the cache channel, with the upper end of the storage channel connected to the discharge port and the lower end of the storage channel connected to the cache channel.

[0012] In the above technical solution, the material storage channel can store a portion of the raw materials, thereby increasing the amount of pre-stored raw materials.

[0013] Preferably, the number of the storage channels is multiple, and the multiple storage channels are arranged in sequence in the vertical direction, and the lower end of the upper storage channel of two adjacent storage channels is connected to the upper end of the lower storage channel. The above technical solution can further increase the amount of pre-stored raw materials.

[0014] Preferably, the inner cavity of the cache box is connected to the inner cavity of the furnace, and a plurality of through holes are provided on the inner wall of the cache channel and / or the inner wall of the storage channel, so that the high-temperature gas in the furnace can enter the cache channel and / or the storage channel in the cache box.

[0015] In the above technical solution, the high-temperature gas in the furnace can enter the cache box, and then enter the cache channel and the material storage channel through the through hole, so that the high-temperature gas can preheat the raw materials in the cache box. The heat of the high-temperature gas discharged from the furnace can be fully utilized to save energy. After the raw materials are heated, the melting time after being put into the furnace can be reduced, thereby improving processing efficiency.

[0016] Preferably, a limit block is provided on the bottom surface of the cache channel near one end of the feeding port, and an inclined surface is provided on the limit block, which is inclined from the side close to the feeding port to the side away from the feeding port, so that the raw materials can move along the inclined surface toward the side of the feeding port under the push of the pushing piece and pass over the limit block to enter the feeding port.

[0017] In the above technical solution, when the pushing piece is extended, it can push the raw materials in the cache channel over the inclined surface and enter the feeding port. The amount of raw materials entering the feeding port is related to the extended length of the pushing piece. Other raw materials in the cache channel that are not pushed into the feeding port can be blocked by the limit block to prevent the raw materials from rushing into the feeding port due to inertia.

[0018] Preferably, the pushing piece is arranged below the feeding port, and the bottom surface of the cache channel is inclined from the side away from the feeding port to the side close to the feeding port, and the inclination angle of the bottom surface of the cache channel is smaller than the inclination angle of the inclined surface, so that when the pushing piece is retracted, the raw materials in the cache channel can be kept in the cache channel.

[0019] In the above technical solution, the bottom surface of the cache channel is tilted from the side away from the feeding port to the side close to the feeding port, so that the raw materials in the cache channel can move toward the feeding port. When the pushing piece retracts, the raw materials can be prevented from retreating with the pushing piece, so that the raw materials in the feed hopper or storage channel can fall smoothly into the cache channel.

[0020] Preferably, the pushing member is arranged below the feeding port, and the cache channel includes a forward-inclined section and a backward-inclined section, the forward-inclined section is arranged on the side close to the pushing mechanism, and the backward-inclined section is arranged on the side close to the feeding port, the bottom surface of the forward-inclined section is inclined from the side away from the feeding port to the side close to the feeding port, and the bottom surface of the backward-inclined section is inclined from the side close to the feeding port to the side away from the feeding port.

[0021] In the above technical solution, the bottom surface of the forward-inclined section is tilted from the side away from the feeding port to the side close to the feeding port, so that the raw materials in the forward-inclined section can be moved toward the feeding port. When the pusher is retracted, the raw materials can be prevented from moving backward, so that the raw materials in the feed hopper or storage channel can smoothly fall into the buffer channel. The bottom surface of the backward-inclined section is tilted from the side close to the feeding port to the side away from the feeding port. When the pusher is extended, the raw materials in the backward-inclined section that have not been pushed into the feeding port can be prevented from rushing into the feeding port due to inertia. When the pusher is retracted, the raw materials in the backward-inclined section can be prevented from rolling into the feeding port.

[0022] Preferably, the pushing piece is arranged below the discharge port, the height of the upper end face of the pushing piece relative to the bottom face of the cache channel is h1, the height of the raw material in the cache channel relative to the bottom face of the cache channel is h2, h2≥h1, so that when the pushing piece is pushed out, at least part of the raw material above the cache channel enters the cache channel and contacts the upper end face of the pushing piece.

[0023] In the above technical solution, when the pusher is extended, the raw materials in the cache channel can be pushed into the feeding port. At the same time, the raw materials above the pusher will enter the cache channel through the feeding port and contact the upper end surface of the pusher. Then, when the pusher is retracted, the raw materials that have fallen on the pusher can prevent the raw materials in the cache channel from retreating. After the pusher is retracted, the raw materials on the pusher can continue to move downward under the action of gravity and contact the bottom surface of the cache channel to complete the feeding.

[0024] Preferably, h2≥2h1. The solution can make the raw materials above the pushing member fall into the buffer channel as much as possible when the pushing member is extended, thereby increasing the blocking effect of the raw materials above the pushing member on the raw materials in the buffer channel.

[0025] Preferably, the pushing mechanism includes a first driver, a second driver, a first pushing piece and a second pushing piece. The first driver drives the first pushing piece to perform reciprocating motion in the cache channel, and the second driver drives the second pushing piece to perform reciprocating motion in the cache channel. The first pushing piece and the second pushing piece are arranged side by side below the discharge port. The height of the upper end face of the second pushing piece relative to the bottom face of the cache channel is h3, and the height of the raw material in the cache channel relative to the bottom face of the cache channel is h2. When pushing the material, the first pushing piece and the second pushing piece are pushed out at the same time. After the raw material in the cache channel is pushed out, the first pushing piece retracts first, so that at least part of the raw material above the cache channel enters the cache channel and contacts the upper end face of the second pushing piece.

[0026] In the above technical solution, the height of the first pusher is close to that of the raw material. When feeding is required, the first pusher and the second pusher are extended simultaneously to push the raw material in the buffer channel into the feeding port. The first pusher is then retracted while the second pusher remains stationary to prevent the raw material in the buffer channel from retreating. At the same time, the raw material above the buffer channel is at least partially allowed to enter the buffer channel and contact the upper end surface of the second pusher. The second pusher is then retracted, and the raw material on the second pusher can continue to move downward under the action of gravity and contact the bottom surface of the buffer channel, completing the feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of the present invention;

[0028] FIG2 is a schematic structural diagram of the automatic raw material feeding device of the present invention;

[0029] Figure 3 is a partial enlarged view of point A in Figure 2:

[0030] FIG4 is a schematic structural diagram of Example 3;

[0031] FIG5 is a structural diagram of Example 5;

[0032] FIG6 is a second structural diagram of Example 5;

[0033] FIG7 is a schematic structural diagram of Example 6;

[0034] FIG8 is a schematic structural diagram of the pusher mechanism in Example 6;

[0035] FIG9 is a schematic structural diagram of a metal melting furnace with a stirring device when the stirring plate is lowered in Example 7 of the present invention;

[0036] FIG10 is a schematic structural diagram of a metal melting furnace with a stirring device when the stirring plate is raised in Example 7 of the present invention;

[0037] FIG11 is a top view of a metal melting furnace with a stirring device according to Example 7 of the present invention;

[0038] FIG12 is a top view of the stirring plate in Example 7 of the present invention;

[0039] FIG13 is a cross-sectional view of a stirring plate in Example 7 of the present invention;

[0040] FIG14 is a cross-sectional view of the stirring plate when raw materials are fed into the feed hole in Example 7 of the present invention;

[0041] FIG15 is a cross-sectional view of the stirring plate when the raw materials enter the cavity in Example 7 of the present invention;

[0042] FIG16 is a cross-sectional view of the stirring plate when the raw material rolls below the first opening in Example 7 of the present invention;

[0043] FIG17 is a cross-sectional view of the stirring plate when not immersed in molten metal in Example 7 of the present invention;

[0044] FIG18 is a cross-sectional view of the stirring plate when immersed in molten metal in Example 7 of the present invention;

[0045] Figure 19 is a schematic structural diagram of the automatic feeder and stirring device in Example 7 of the present invention.

[0046] In the figure: furnace 100, cavity 110, feeding port 101, stirring plate 200, feeding hole 201, stirring rod 210, plate body 220, annular boss 230, drain port 240, outer ring wall 250, third opening 260, circular space 270, inner ring wall 280, radial opening 290, driving device 300, lifting power component 310, rotating power component 320, spline sleeve 330, raw material holding part 400, cavity 410, first opening 420, second opening 430, baffle 440, automatic Feeding device 500, feed hopper 570, feed port 571, discharge port 572, sealing cover 573, cache box 580, cache channel 581, forward tilting section 581.1, backward tilting section 581.2, discharge port 581.3, storage channel 582, through hole 583, pushing mechanism 590, driver 591, first driver 591.1, second driver 591.2, pushing piece 592, first pushing piece 592.1, second pushing piece 592.2, limit block 584, inclined surface 585, raw material 800. DETAILED DESCRIPTION

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] Example 1:

[0049] As shown in Figures 1 and 2, an automatic feeding device for a stove 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. A cache channel 581 is provided in the cache box 580. One end of the cache channel 581 is provided with a discharge port 581.3 connected to the discharge port 572, and the other end of the cache channel 581 is connected to the feeding port 101 of the stove 100; the pushing mechanism 590 is used to push the raw material 800 in the cache channel 581 into the feeding port 101 of the stove 100 in sequence. The pushing mechanism 590 includes a driver 591 and a pushing piece 592. The driver 591 drives the pushing piece 592 to reciprocate in the cache channel 581, so as to push the raw material 800 in the cache channel 581 into the feeding port 101 in sequence through the reciprocating motion of the pushing piece 592.

[0050] In the above technical solution, the raw materials 800 to be added to the stove 100 can be first poured into the feed hopper 570 through the feed port 571. The raw materials 800 can be added manually or automatically. The raw materials 800 in the feed hopper 570 enter the buffer channel 581 through the discharge port 572 in sequence. The raw materials 800 in the buffer channel 581 are then pushed into the feeding port 101 by the pushing mechanism 590. The pushing member 592 pushes a certain amount of raw materials 800 with each reciprocating motion. By controlling the number of reciprocating motions of the pushing member 592, the amount of raw materials 800 added can be precisely controlled. Since the mass of each raw material 800 is substantially the same, the above solution can achieve precise control of the amount of raw materials 800 added. Moreover, by controlling the reciprocating speed of the pushing member 592, the addition speed of the raw materials 800 can be controlled, so that the raw materials 800 can be added to the stove 100 at a uniform speed. The driver 591 is fixed on the outer wall of the buffer box 580 , and the pusher 592 is slidably connected to the buffer box 580 .

[0051] Preferably, the cache box 580 is further provided with a plurality of storage channels 582 arranged obliquely, and the plurality of storage channels 582 are arranged in sequence in the vertical direction, and in two adjacent storage channels 582, the lower end of the upper storage channel 582 is connected to the upper end of the lower storage channel 582, the lowermost storage channel 582 is arranged above the cache 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 cache channel 581.

[0052] In the above technical solution, the material storage channel 582 can store a portion of the raw materials 800, thereby increasing the amount of pre-stored raw materials 800.

[0053] Preferably, the inner cavity of the cache box 580 is connected to the inner cavity of the stove 100, and a plurality of through holes 583 are provided on the inner wall of the cache channel 581 and the inner wall of the storage channel 582, so that the high-temperature gas in the stove 100 can enter the cache channel 581 and the storage channel 582 in the cache box 580.

[0054] In the above technical solution, the high-temperature gas within the furnace 100 can enter the buffer box 580 and then enter the buffer channel 581 and the material storage channel 582 through the through hole 583, so that the high-temperature gas can preheat the raw material 800 in the buffer box 580. This can fully utilize the heat of the high-temperature gas exhausted from the furnace 100, saving energy. After the raw material 800 is heated, the melting time after being put into the furnace 100 can be reduced, thereby improving processing efficiency. The buffer box 580 is provided with an exhaust port for exhausting the high-temperature gas.

[0055] It will be appreciated that, in one embodiment, the feed hopper 570 is provided with a cover 573 that is detachably connected to the feed hopper 570, such that the cover 573 has a closed state, sealing the feed opening 571, and an open state, opening the feed opening 571. The cover 573 can seal the feed opening 571 when there is no need to add raw material 800 to the feed hopper 570, thereby preventing high-temperature gas from being discharged through the feed opening 571. The detachable connection can be a snap-fit ​​connection, a clamping connection, a bolt connection, or other connection methods.

[0056] It is understood that in another embodiment, the feed hopper 570 is provided with a cover 573 hingedly connected to the feed hopper 570, so that the cover 573 has a closed state that closes the feed opening 571 and an open state that opens the feed opening 571. The cover 573 can close the feed opening 571 when there is no need to add raw material 800 to the feed hopper 570, thereby preventing high-temperature gas from being discharged through the feed opening 571.

[0057] It can be understood that, in one embodiment, the driver 591 is a linear driver, which drives the pusher 592 to perform reciprocating linear motion in the cache channel 581 .

[0058] It can be understood that in another embodiment, the driver can be a rotary driver, such as a motor, and one end of the pusher is fixed to the rotary driver, and the rotary driver drives the pusher to swing back and forth, pushing the raw materials into the feeding port through the reciprocating swing.

[0059] Example 2:

[0060] As shown in Figures 1 to 3, on the basis of Example 1, a limit block 584 is fixed to the bottom surface of the cache channel 581 near one end of the feeding port 101, and an inclined surface 585 is provided on the limit block 584. The inclined surface 585 faces the raw material 800 in the cache channel 581, and the inclined surface 585 is inclined from the side close to the feeding port 101 to the side away from the feeding port 101, so that the raw material 800 can move along the inclined surface 585 toward the side of the feeding port 101 under the push of the pushing piece 592 and pass over the limit block 584 to enter the feeding port 101.

[0061] In the above technical solution, when the pushing piece 592 is extended, it can push the raw material 800 in the cache channel 581 over the inclined surface 585 and enter the feeding port 101. The amount of raw materials 800 entering the feeding port 101 is related to the extended length of the pushing piece 592. Other raw materials 800 in the cache channel 581 that have not been pushed into the feeding port 101 can be blocked by the limit block 584 to prevent the raw material 800 from rushing into the feeding port 101 due to inertia.

[0062] Preferably, the pushing piece 592 is arranged below the discharge port 581.3, and the bottom surface of the cache channel 581 is inclined from high to low in the direction of the feeding port 101, and the inclination angle of the bottom surface of the cache channel 581 is smaller than the inclination angle of the inclined surface 585, so that when the pushing piece 592 is retracted, the raw material 800 in the cache channel 581 can be kept in the cache channel 581.

[0063] In the above technical solution, the raw material 800 in the cache channel 581 can be moved toward the side of the feeding port 101. When the pushing piece 592 retracts, the raw material 800 can be prevented from retreating with the pushing piece 592, so that the raw material 800 in the storage channel 582 can fall smoothly into the cache channel 581.

[0064] Example 3:

[0065] As shown in Figure 4, on the basis of Example 1, the pushing member 592 is arranged below the discharge port 581.3, and the cache channel 581 includes a forward inclined section 581.1 and a backward inclined section 581.2, the forward inclined section 581.1 is arranged on the side close to the pushing mechanism 590, and the backward inclined section 581.2 is arranged on the side close to the feeding port 101, the bottom surface of the forward inclined section 581.1 is inclined from high to low in the direction of the feeding port 101, and the bottom surface of the backward inclined section 581.2 is inclined from low to high in the direction of the feeding port 101.

[0066] In the above technical solution, the bottom surface of the forward-inclined section 581.1 is tilted from high to low toward the feeding port 101, so that the raw material 800 in the forward-inclined section 581.1 can move toward the feeding port 101. When the pusher 592 retracts, the raw material 800 can be prevented from moving backward, so that the raw material 800 in the storage channel 582 can smoothly fall into the buffer channel 581. The bottom surface of the backward-inclined section 581.2 is tilted from low to high toward the feeding port 101. When the pusher 592 extends, the raw material 800 in the backward-inclined section 581.2 that has not been pushed into the feeding port 101 can be prevented from rushing into the feeding port 101 due to inertia. When the pusher 592 retracts, the raw material 800 in the backward-inclined section 581.2 can also be prevented from rolling into the feeding port 101.

[0067] In this embodiment, the forward inclined section 581.1 and the rearward inclined section 581.2 may be directly connected or connected through a horizontal section.

[0068] Example 4:

[0069] Based on Example 1, the bottom surface of the buffer channel is tilted from low to high in the direction of the feeding port. In the above technical solution, the raw materials in the buffer channel can be prevented from rolling into the feeding port.

[0070] Example 5:

[0071] As shown in Figures 5 and 6, on the basis of Example 1, the pushing member 592 is arranged below the discharge port 581.3, and the height of the upper end face of the pushing member 592 relative to the bottom face of the cache channel 581 is h1, and the height of the raw material 800 in the cache channel 581 relative to the bottom face 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 800 above the cache channel 581 enters the cache channel 581 and contacts the upper end face of the pushing member 592.

[0072] When the pushing member 592 is pushed out, the raw material 800 below the discharge port 581.3 will be pushed forward, and the raw material at the front of the cache channel 581 will fall into the feeding port 101. When the pushing member 592 retracts, the raw material 800 will follow the pushing member 592 and roll back to directly below or obliquely below the discharge port 581.3. The rolled-back raw material 800 will block the raw material 800 above the discharge port 581.3 from falling, resulting in the raw material 800 above the discharge port 581.3 being unable to fall into the cache channel 581 and being stuck at the discharge port 581.3. The raw material 800 in the cache channel 581 is not replenished. Thereafter, when the pushing member 592 is continued to be pushed out, since the cache channel 581 is not replenished with new raw material 800, the raw material 800 cannot be pushed from the cache channel 581 into the feeding port 101, resulting in the automatic feeding device being unable to feed accurately and smoothly. In this embodiment, when the pushing piece 592 is extended, the raw material 800 at the front of the cache channel 581 can be pushed into the feeding port 101. At the same time, the raw material 800 above the pushing piece 592 will partially enter the cache channel 581 through the discharge port 581.3 and contact the upper end surface of the pushing piece 592. Then, when the pushing piece 592 is retracted, the raw material 800 that has fallen on the pushing piece 592 can prevent the raw material 800 in the cache channel 581 from rolling back. After the pushing piece 592 is retracted, since the raw material 800 on the pushing piece 592 is at least partially in the cache channel 581, it is not easy to be stuck by the raw material in the cache channel 581. Therefore, the raw material 800 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.

[0073] Preferably, h2 ≥ 2h1. This solution allows the raw material 800 above the pusher 592 to fall as much as possible into the buffer channel 581 when the pusher 592 extends, thereby increasing the blocking effect of the raw material 800 above the pusher 592 on the raw material 800 in the buffer channel 581, and allowing the raw material above the discharge port 581.3 to enter the buffer channel 581 more smoothly.

[0074] In this embodiment, in order to prevent the raw materials 800 in the buffer channel 581 from rolling into the feeding port 101 when the pushing member 592 is not pushing the raw materials 800, the bottom surface of the buffer channel 581 is tilted from low to high toward the feeding port 101.

[0075] Example 6:

[0076] As shown in Figures 7 and 8, on the basis of Example 1, the pushing mechanism 590 includes a first driver 591.1, a second driver 591.2, a first pushing member 592.1 and a second pushing member 592.2. The first driver 591.1 drives the first pushing member 592.1 to reciprocate in the cache channel 581, and the second driver 591.2 drives the second pushing member 592.2 to reciprocate in the cache channel 581. The first pushing member 592.1 and the second pushing member 592.2 are arranged side by side below the discharge port 581.3, and the height of the second pushing member 592.2 is lower than that of the first The height of the pushing member 592.1, the height of the upper end surface of the second pushing member 592.2 relative to the bottom surface of the cache channel 581 is h3, and the height of the raw material 800 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 member 592.1 and the second pushing member 592.2 are pushed out at the same time. After the raw material 800 in the cache channel 581 is pushed out, the first pushing member 592.1 retracts first to allow at least part of the raw material 800 above the cache channel 581 to enter the cache channel 581 and contact the upper end surface of the second pushing member 592.2.

[0077] When the pushing member 592 is pushed out, the raw material 800 below the discharge port 581.3 will be pushed forward, and the raw material at the front of the cache channel 581 will fall into the feeding port 101. When the pushing member 592 retracts, the raw material 800 will follow the pushing member 592 and roll back to directly below or obliquely below the discharge port 581.3. The rolled-back raw material 800 will block the raw material 800 above the discharge port 581.3 from falling, resulting in the raw material 800 above the discharge port 581.3 being unable to fall into the cache channel 581 and being stuck at the discharge port 581.3. The raw material 800 in the cache channel 581 is not replenished. Thereafter, when the pushing member 592 is continued to be pushed out, since the cache channel 581 is not replenished with new raw material 800, the raw material 800 cannot be pushed from the cache channel 581 into the feeding port 101, resulting in the automatic feeding device being unable to feed accurately and smoothly. In this embodiment, when feeding is required, the first pushing member 592.1 and the second pushing member 592.2 are extended at the same time, and the raw material 800 at the front of the buffer channel 581 can be pushed into the feeding port 101. Then the first pushing member 592.1 is retracted and the second pushing member 592.2 remains stationary, which can prevent the raw material 800 in the buffer channel 581 from rolling back and can also make at least part of the raw material 800 above the buffer channel 581 enter the buffer channel 581 and contact the upper end surface of the second pushing member 592.2. The raw material 800 that has partially fallen into the cache channel 581 can avoid the raw material 800 originally in the cache channel 581 from rolling back, and then the second pushing piece 592.2 is retracted. Since the raw material 800 on the second pushing piece 592.2 is already at least partially in the cache channel 581, it is not easy to be stuck by the raw material in the cache channel 581. Therefore, the raw material 800 on the second pushing piece 592.2 can continue to move downward under the action of gravity and contact with the bottom surface of the cache channel 581 to complete the feeding.

[0078] In this embodiment, since the first pusher 592.1 and the second pusher 592.2 extend simultaneously, it is possible to ensure that the raw material 800 in the buffer channel 581 is pushed into the feeding port 101. After the first pusher 592.1 and the second pusher 592.2 extend, it is only necessary to limit the raw material 800 in the buffer channel 581 to prevent it from moving backward, and there is no need to provide power to push the raw material 800. Therefore, the height of the second pusher 592.2 can be set relatively low, specifically, h3≤h2 / 3, that is, 3h3≤h2. After the height of the second pusher 592.2 is set relatively low, it can be ensured that after the first pusher 592.1 retracts, a sufficient portion of the raw material 800 above the buffer channel 581 falls into the buffer channel 581, which can prevent the raw material 800 in the falling buffer channel 581 from rolling back and can completely fall into the buffer channel 581 after the second pusher 592.2 retracts. If the height of the second pushing piece 592.2 is too low, the raw material 800 in the cache channel 581 may roll over the pushing piece 592, resulting in the inability to prevent the raw material 800 from rolling back. Therefore, in order to ensure the limiting effect, the second pushing piece 592.2 needs to have a certain height, specifically, h2 / 4≤h3, that is, h2≤4h3.

[0079] Furthermore, the height of the first pusher 592.1 is h4, h4 ≥ h2 / 2, to ensure that the first pusher 592.1 can smoothly push the raw material 800 in the buffer channel 581 forward. Preferably, the height of the first pusher 592.1 is equal to the height of the raw material 800.

[0080] In this embodiment, in order to prevent the raw materials 800 in the buffer channel 581 from rolling into the feeding port 101 when the pushing member 592 is not pushing the raw materials 800, the bottom surface of the buffer channel 581 is tilted from low to high toward the feeding port 101.

[0081] Example 7:

[0082] As shown in Figures 1 to 18, a metal melting furnace with a stirring device includes a furnace 100 and a stirring device. The furnace 100 has a chamber 110 for accommodating molten metal. The stirring device is used to fully blend the raw materials added to the chamber 110 with the molten metal so that the raw materials are evenly distributed in the molten metal. The stirring device includes a stirring plate 200, a stirring rod 210 connected to the stirring plate 200, and a driving device 300 that is transmission-connected to the stirring rod 210. The stirring plate 200 has a raw material holding portion 400. 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 chamber 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 along with the stirring plate 200 to melt in the molten metal. The driving device 300 drives the stirring rod 210 to rise and fall.

[0083] 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, thereby avoiding 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, resulting in 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, thereby improving the stirring efficiency.

[0084] The vertical through opening allows the molten metal to pass through the stirring disk 200, reducing the resistance encountered by the stirring disk 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 disk 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 during 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 stirring disk 200 with the raw materials, it will not affect the quality of the molten metal that can be used for casting in the cavity 110. 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.

[0085] In the present application, the molten metal is copper liquid, 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.

[0086] 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 12 to 18, 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.

[0087] 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.

[0088] 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 that of 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 enter the molten metal from the feed hole 201; if the density of the raw material is less than that of the molten metal, after the stirring plate 200 is immersed in the molten metal, the raw material will float up and counteract 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 enter the molten metal from the feed hole 201 after floating up.

[0089] 13 to 18 , 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, and 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 it 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.

[0090] 13 , 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.

[0091] The minimum distance between the lower end of the baffle 440 and the top wall of the cavity 110 is R1. The diameter of the raw material is R2. R1 is less than 6 / 5R2. This design allows the raw material to be blocked by the baffle 440 after rising a short distance.

[0092] 19 , 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. The stirring rod 210 is provided with a spline sleeve 330 that 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.

[0093] Referring to Figures 12 to 18 , based on the above-described embodiment, in one embodiment of the present invention, a plurality of raw material holding portions 400 are provided on the stirring disk 200. The plurality of raw material holding portions 400 are spaced apart along the circumference of the stirring disk 200. By providing the plurality of raw material holding portions 400, the amount of raw material that can be carried by the stirring disk 200 can be increased, thereby eliminating the need for multiple raw material replenishments. The raw material holding portions 400 are spaced apart along the circumference of the stirring disk 200, so that the raw material can be replenished 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.

[0094] 13 to 19 , based on the above 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 in the direction of 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, which can reduce the stirring force on the copper liquid. 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.

[0095] 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.

[0096] 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.

[0097] 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. Because the lower end of the annular boss 230 is constricted, the annular boss 230 exerts 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, preventing the periphery of the disk body 220 from protruding beyond 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 fully immersed in the molten metal, the lower surface of the disk body 220 corresponding to the circular space 270 enclosed by the annular boss 230 comes into contact with 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 also reduce the overall weight of the stirring plate 200 and reduce the load on the driving device 300. The sidewalls of the circular space 270 guide the molten metal, which can reduce the stirring force exerted by the lower surface of the plate body 220 corresponding to the circular space 270 on the molten metal.

[0098] 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 .

[0099] Referring to Figures 12 to 18 , based on the above embodiments, in one embodiment of the present invention, a plurality of groups of third openings are provided on the top wall of the circular space 270, each group of third openings including a plurality of third openings 260. The plurality of third openings 260 in each group of third openings are arranged around the circumference of the stirring disk 200. As shown in Figure 12 , two groups of third openings are provided on the stirring disk 200 in Figure 12 , one group of third openings including three third openings 260, and the other group of third openings including six third openings 260. Among the plurality of 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. This allows air within the circular space 270 to be discharged through this group of third openings during immersion of the stirring disk 200 in the molten metal, and allows air within the circular space 270 to be discharged through the third openings 260 during descent of the stirring disk 200.

[0100] Based on the above embodiments, in one embodiment of the present invention, the metal melting furnace with a stirring device further includes an automatic feeding device 500 for replenishing raw materials to the raw material holding portion 400. The automatic feeding device 500 adopts any one of the schemes in Examples 1 to 6. The feed hole 201 on the stirring plate 200 is aligned with the feeding port 101, so that the raw material 800 fed into the feeding port 101 by the automatic feeding device 500 enters the feed hole 201. 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 feeding device 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 feeding device 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, which can provide sufficient time for feeding. At this time, the stirring disk 200 and the automatic feeding device 500 are relatively stationary, which can also prevent the raw materials from shifting when falling.

Claims

1. An automatic feeding device for a stove, characterized in that it comprises: A feed hopper, which is provided with a feed inlet and a discharge outlet; A cache box is provided with a cache channel, one end of the cache channel is provided with a feed opening connected to the discharge port, and the other end of the cache channel is connected to the feed opening of the furnace; The pushing mechanism is used to push the raw materials in the cache channel into the feeding port of the furnace in sequence. The pushing mechanism includes a driver and a pushing piece. The driver drives the pushing piece to reciprocate in the cache channel, so that the raw materials in the cache channel are pushed into the feeding port in sequence through the reciprocating motion of the pushing piece.

2. The automatic feeding device for a stove according to claim 1, characterized in that: The cache box is also provided with an inclined material storage channel, which is arranged above the cache channel, the upper end of the material storage channel is connected to the discharge port, and the lower end of the material storage channel is connected to the cache channel.

3. The automatic feeding device for a stove according to claim 2, characterized in that: There are multiple material storage channels, which are arranged in sequence in the vertical direction, and in two adjacent material storage channels, the lower end of the upper material storage channel is connected to the upper end of the lower material storage channel.

4. The automatic feeding device for a stove according to claim 2, characterized in that: The inner cavity of the cache box is connected to the inner cavity of the furnace, and a plurality of through holes are provided on the inner wall of the cache channel and / or the inner wall of the material storage channel so that the high-temperature gas in the furnace can enter the cache channel and / or the material storage channel in the cache box.

5. An automatic charging device for a stove according to any one of claims 1 to 4, characterized in that: A limit block is provided on the bottom surface of the cache channel near one end of the feeding port, and an inclined surface is provided on the limit block, which inclines from a side close to the feeding port to a side away from the feeding port, so that the raw material can move along the inclined surface toward the feeding port under the push of the pushing piece and pass over the limit block to enter the feeding port.

6. The automatic feeding device for a stove according to claim 5, characterized in that: The pushing piece is arranged below the feeding port, and the bottom surface of the cache channel is inclined from the side away from the feeding port to the side close to the feeding port, and the inclination angle of the bottom surface of the cache channel is smaller than the inclination angle of the inclined surface, so that when the pushing piece is retracted, the raw materials in the cache channel can be kept in the cache channel.

7. An automatic charging device for a stove according to any one of claims 1 to 4, characterized in that: The pushing member is arranged below the feeding port, and the cache channel includes a forward inclined section and a backward inclined section. The forward inclined section is arranged on a side close to the pushing mechanism, and the backward inclined section is arranged on a side close to the feeding port. The bottom surface of the forward inclined section is inclined from a side away from the feeding port to a side close to the feeding port, and the bottom surface of the backward inclined section is inclined from a side close to the feeding port to a side away from the feeding port.

8. An automatic charging device for a stove according to any one of claims 1 to 4, characterized in that: The pushing piece is arranged below the material discharge port, the height of the upper end surface of the pushing piece relative to the bottom surface of the cache channel is h1, the height of the raw material in the cache channel relative to the bottom surface of the cache channel is h2, h2≥h1, so that when the pushing piece is pushed out, at least part of the raw material above the cache channel enters the cache channel and contacts the upper end surface of the pushing piece.

9. The automatic charging device for a stove according to claim 8, characterized in that: The h2≥2h1.

10. An automatic charging device for a stove according to any one of claims 1 to 4, characterized in that: The pushing mechanism includes a first driver, a second driver, a first pushing piece and a second pushing piece. The first driver drives the first pushing piece to do reciprocating motion in the cache channel, and the second driver drives the second pushing piece to do reciprocating motion in the cache channel. The first pushing piece and the second pushing piece are arranged side by side below the discharge port. The height of the upper end face of the second pushing piece relative to the bottom face of the cache channel is h3, and the height of the raw material in the cache channel relative to the bottom face of the cache channel is h2, 3h3≤h2≤4h3; when pushing the material, the first pushing piece and the second pushing piece are pushed out at the same time. After the raw material in the cache channel is pushed out, the first pushing piece retracts first, so that at least part of the raw material above the cache channel enters the cache channel and contacts the upper end face of the second pushing piece.

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