Charging mechanism for a smelting furnace and control method

Abstract

The application provides a feeding mechanism for a smelting furnace and a control method, and belongs to the technical field of smelting, and is used for solving the problems of operation abnormity and feeding failure occurring in the feeding process. The feeding mechanism for the smelting furnace comprises a feeding chamber, a feeding barrel, a first sensor, a guide structure and a control system. The feeding chamber is located at the top of the smelting furnace and communicates with a smelting chamber of the smelting furnace. A lifting device is arranged in the feeding chamber. The feeding barrel is connected to the lifting device. The lifting device can drive the feeding barrel to reciprocatingly lift between the feeding chamber and the smelting chamber. The first sensor is used for monitoring the tension borne by the lifting device in real time. The guide structure is used for providing guidance for the lifting of the feeding barrel. The control system is connected to the lifting device and the first sensor respectively, and can control the operation of the lifting device according to the data monitored by the first sensor. The application can judge the abnormal situation in the lifting process of the feeding barrel and stop the operation of the feeding barrel in time, so that the feeding failure or damage to the equipment is avoided.

Description

Technical Field

[0001] This application belongs to the field of smelting technology, specifically relating to a feeding mechanism and control method for a smelting furnace. Background Technology

[0002] A smelting furnace is a device that melts metal ingots and some scrap metal, adds necessary alloying components, and then smelts them into the desired alloy through processes such as slag removal and refining. Current smelting furnaces typically use a hoisted charging bucket to load raw materials, which is then lowered into the furnace for charging. When the raw materials in the charging bucket are not evenly loaded, the bucket may become eccentric, i.e., tilted. If the tilt angle is large enough, the charging bucket may become stuck at the furnace entrance and unable to descend. Even if it manages to enter the furnace, the tilted bucket may cause some raw materials to fall into the melting chamber outside the crucible during charging, resulting in charging failure. In addition, if the raw materials loaded inside the feeding hopper are not arranged properly, causing the gate valve at the bottom of the feeding hopper to jam after feeding, or if the raw materials unloaded into the crucible are piled up irregularly, with the protruding raw materials being in the open position of the feeding hopper gate valve, the gate valve will not be able to close. In this case, the feeding hopper will rise and scrape the guide structure of the feeding chamber. The strong tension will damage the guide structure of the feeding chamber, thus damaging the entire equipment. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this application is to provide a feeding mechanism and control method for a smelting furnace, which can judge abnormal situations during the operation of the feeding tank and stop the operation of the feeding tank in time to avoid damage to the equipment or feeding failure.

[0004] To address the aforementioned problems, this application provides a charging mechanism for a smelting furnace, comprising: a charging chamber, a charging bucket, a first sensor, a guiding structure, and a control system. The charging chamber is located at the top of the smelting furnace and communicates with the smelting chamber. A lifting device is provided in the charging chamber. The charging bucket is connected to the lifting device. The lifting device can drive the charging bucket to reciprocate between the charging chamber and the smelting chamber. The first sensor is used to monitor the tension borne by the lifting device in real time. The guiding structure is used to guide the lifting of the charging bucket. The control system is connected to both the lifting device and the first sensor, and can control the operation of the lifting device based on the data monitored by the first sensor.

[0005] Optionally, during the descent of the feeding hopper: the lifting device stops operating when the tension it bears decreases by a first value. During the ascent of the feeding hopper: the lifting device stops operating when the tension it bears increases by a second value.

[0006] Optionally, the guiding structure includes: a pair of guide edges, a square box, and a pair of guide slots. The pair of guide edges are symmetrically arranged on both sides of the outer surface of the feeding barrel. The guide edges extend from the bottom to the top of the feeding barrel. The square box is located at the bottom of the feeding chamber and corresponds to the position of the feeding barrel. When the feeding barrel reciprocates between the feeding chamber and the melting chamber, it can pass through the square box. The pair of guide slots are symmetrically arranged vertically on both sides inside the square box. The pair of guide edges can be inserted into the pair of guide slots respectively.

[0007] Optionally, the guide structure further includes a pair of second sensors. Each second sensor is disposed in a guide groove and is used to detect whether the guide edge is located in the guide groove. The second sensors are connected to the control system, which can control the operation of the lifting device based on the detection data of the second sensors.

[0008] Optionally, the feeding mechanism further includes a limiting structure. The limiting structure is disposed on the guide edge and near the top of the feeding barrel. The limiting structure can engage in the guide groove to limit the unloading position of the feeding barrel.

[0009] Optionally, the feeding mechanism also includes a fault alarm. The fault alarm is connected to the control system.

[0010] Optionally, the lifting device includes a winch motor and a winding reel. The winch motor is connected to the control system. The winding reel is mounted on the output shaft of the winch motor. A flat strip is wound on the winding reel, and the free end of the flat strip is connected to the feeding hopper via a hook.

[0011] This application also provides a control method for the above-mentioned feeding mechanism, the method comprising:

[0012] Control the feeding bucket to descend until it reaches above the guide structure.

[0013] The feeding bucket is lowered by jogging, causing it to enter the guide structure.

[0014] The lifting device is monitored in real time using a first sensor. If the tension on the lifting device decreases by a first value, the lifting device stops operating.

[0015] Control the feeding bucket to descend to the unloading position and complete the unloading.

[0016] The system controls the lifting of the feeding hopper and uses a first sensor to monitor the tension on the lifting device in real time. If the tension on the lifting device increases by a second value, the lifting device stops operating.

[0017] Control the feeding bucket to rise until it returns to the feeding chamber.

[0018] Optionally, the guide structure includes: a pair of guide edges symmetrically arranged on both sides of the outer surface of the feeding barrel. The guide edges extend from the bottom to the top of the feeding barrel. A square box is located at the bottom of the feeding chamber and corresponds to the position of the feeding barrel. When the feeding barrel reciprocates between the feeding chamber and the melting chamber, the feeding barrel can pass through the square box. A pair of guide slots are symmetrically arranged on both sides of the interior of the square box in a vertical direction. The pair of guide edges can be inserted into the pair of guide slots respectively. Enabling the feeding barrel to enter the guide structure further includes:

[0019] Insert the guide edges on both sides of the feeding bucket into a pair of guide grooves in the guide structure.

[0020] Once the second sensors in both guide slots detect the guide edge, the feeding bucket is controlled to continue descending.

[0021] Optionally, the feeding mechanism further includes a limiting structure disposed on the guide edge and near the top of the feeding hopper. The limiting structure can engage in the guide groove to restrict the descent of the feeding hopper. Controlling the descent of the feeding hopper to the unloading position and completing the unloading includes:

[0022] The feeding bucket is lowered by jogging, causing the limiting structure on the feeding bucket to engage with the guide groove of the guide structure.

[0023] Open the gate valve at the bottom of the feeding tank to unload the material.

[0024] After unloading is complete, close the gate valve.

[0025] Beneficial effects

[0026] 1. The feeding mechanism for a smelting furnace provided by this invention can monitor the pulling force value of the feeding bucket in real time during operation. When the feeding bucket experiences abnormal descent or ascent, the online measured force value of the feeding bucket will change drastically. When the control system receives a drastic change in the measured force value, it immediately stops the descent or ascent to avoid feeding failure or equipment damage. This application monitors the real-time force value of the feeding bucket during its lifting and descent using a first sensor, and works with the control system to judge any abnormalities in the real-time force value, promptly stopping the lifting and descent of the feeding bucket so that operators can inspect the equipment and avoid equipment damage or feeding failure.

[0027] 2. The control method provided by the present invention can judge abnormal situations during the lifting and lowering process of the feeding hopper and stop the operation of the feeding hopper in time, so as to avoid feeding failure or damage to the equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the feeding mechanism for a smelting furnace according to an embodiment of this application;

[0029] Figure 2 This is a flowchart of the control method according to an embodiment of this application;

[0030] Figure 3 This is a flowchart of a control method according to another embodiment of this application;

[0031] Figure 4 This is a flowchart of a control method according to yet another embodiment of this application.

[0032] The reference numerals in the attached figures are as follows:

[0033] 1. Feeding chamber; 2. Guiding structure; 3. Melting chamber; 4. Winding reel; 5. Flat strip; 6. Feeding bucket; 7. Guide edge; 8. Limiting structure; 9. Raw material; 10. First sensor; 11. Square box; 12. Guide groove; 13. Second sensor; 14. Gate valve; 15. Crucible. Detailed Implementation

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0038] Figure 1 This is a schematic diagram of the charging mechanism for the smelting furnace in this embodiment. Figure 1 As shown, the charging mechanism for a smelting furnace in this embodiment includes: a charging chamber 1, a charging bucket 6, a first sensor 10, a guide structure 2, and a control system. The charging chamber 1 is located at the top of the smelting furnace and communicates with the smelting chamber 3 of the smelting furnace. A lifting device is provided in the charging chamber 1. The charging bucket 6 is connected to the lifting device. The lifting device can drive the charging bucket 6 to reciprocate between the charging chamber 1 and the smelting chamber 3. The first sensor 10 is used to monitor the tension borne by the lifting device in real time. The guide structure 2 is used to provide guidance for the lifting of the charging bucket 6. The control system is connected to both the lifting device and the first sensor 10, and can control the operation of the lifting device based on the data monitored by the first sensor 10.

[0039] In some examples, the first sensor 10 is a weighing sensor used to measure the total tensile force on the lifting device in real time during the lifting and lowering of the feeding bucket 6. When the feeding bucket 6 is stuck during descent or descent, the tensile force exerted by the feeding bucket 6 on the lifting device will change drastically in an instant: the force will decrease if the sticking occurs during descent, and the force will increase if the sticking occurs during descent.

[0040] In some examples, the control system is the same as the control system of the smelting furnace. However, it is understood that in other embodiments, the feeding mechanism may also have an independent control system, and this embodiment does not impose further limitations on this.

[0041] It should be noted that the charging mechanism for the smelting furnace in this embodiment can be applied to smelting furnaces for melting various types of raw materials. When used in a vacuum induction smelting furnace, the charging chamber 1 and the smelting chamber 3 are sealed together to ensure that the vacuum environment inside the furnace is not disrupted.

[0042] The feeding mechanism for the smelting furnace in this embodiment can monitor the pulling force of the feeding bucket 6 on the lifting device in real time during operation. When the feeding bucket 6 experiences abnormal descent or ascent, the force value will change drastically. When the control system receives a drastic change in the force value, it immediately stops the descent or ascent to avoid feeding failure or equipment damage. This application uses the first sensor 10 to monitor the real-time force value acting on the lifting device during the lifting of the feeding bucket 6, and works with the control system to judge any abnormalities in the real-time force value, promptly stopping the lifting movement of the feeding bucket 6 so that operators can inspect the equipment and avoid equipment damage or feeding failure.

[0043] In some embodiments, see Figure 1During the descent of the feeding bucket 6: When the tension on the lifting device decreases by a first value, the lifting device stops operating. During the ascent of the feeding bucket: When the tension on the lifting device increases by a second value, the lifting device stops operating.

[0044] In some examples, the first value ranges from 10 to 30 kg. This setting allows the lifting device to stop operating promptly if jamming occurs during the descent of the feeding hopper 6, preventing the gate valve 14 from opening accidentally before the feeding hopper 6 reaches the unloading position.

[0045] For example, the preferred first value is 20kg. During the descent of the feeding bucket 6, if the feeding bucket 6 becomes eccentric and jams, the descent will be disrupted, and the pulling force exerted by the feeding bucket 6 on the lifting device will decrease. When the first sensor 10 detects that the force βkg exerted by the feeding bucket 6 on the lifting device is less than or equal to the initial descent force αkg - 20kg, the descent of the feeding bucket 6 will be stopped immediately to prevent the gate valve 14 of the feeding bucket 6 from opening accidentally and to allow the raw material 9 to be fed into the melting chamber 3. Then, the fully loaded feeding bucket 6 will be controlled to rise until it reaches the rising limit, at which point the operation will stop. The raw material 9 inside the feeding bucket 6 will be rearranged to ensure that the feeding bucket 6 is not eccentric, and the feeding operation will be restarted.

[0046] For example, the weight of an empty feeding bucket 6 is fixed at 94.5 kg, and the weight of a fully loaded blank 9 is 198 kg. The initial force αkg for the feeding bucket 6 to descend is 94.5 kg + 198 kg = 292.5 kg. During the descent of the feeding bucket 6, if it gets stuck due to eccentricity or other reasons, and if the first sensor 10 detects that the force βkg acting on the lifting device is ≤ αkg - 20 kg = 292.5 kg - 20 kg = 272.5 kg, the control system will stop the descent of the feeding bucket 6.

[0047] In some examples, the second value ranges from 5 to 15 kg. This setting helps prevent damage to equipment such as the feeding hopper 6 and the guide structure 2.

[0048] For example, the second value is preferably 10kg. During the rising process of the feeding bucket 6, if the gate valve 15 of the feeding bucket 6 is stuck, the rising action will be sluggish and the pulling force of the feeding bucket 6 on the lifting device will decrease. When the first sensor 10 detects that the force value βkg of the feeding bucket 6 on the lifting device is greater than or equal to the initial rising force value αkg + 10kg, the rising of the feeding bucket 6 will be stopped immediately, and the furnace will be opened for maintenance of the feeding mechanism.

[0049] For example, if the weight of the feeding bucket 6 itself is fixed at 94.5 kg, and the gate valve 14 of the feeding bucket 6 is jammed with praseodymium-neodymium blocks, the weight of which is 7.5 kg, then the initial force value for the feeding bucket 6 to rise is α kg = 94.5 kg + 7.5 kg = 102 kg. During the rising process of the feeding bucket 6, if the gate valve 14 jams and the first sensor 10 detects that the force value β kg acting on the lifting device by the feeding bucket 6 is ≥ α kg + 10 kg = 102 kg + 10 kg = 112 kg, the control system will stop the rising action of the feeding bucket 6.

[0050] This embodiment enables the control system to promptly stop the descent or ascent of the feeding hopper 6 when a descent or ascent malfunctions, by setting a first value and a second value, thus avoiding feeding failure or equipment damage.

[0051] In some embodiments, such as Figure 1 As shown, the guide structure 2 includes: a pair of guide edges 7, a square box 11, and a pair of guide grooves 12. The pair of guide edges 7 are symmetrically arranged on both sides of the outer surface of the feeding barrel 6. The guide edges 7 extend from the bottom to the top of the feeding barrel 6. The square box 11 is located at the bottom of the feeding chamber 1 and corresponds to the position of the feeding barrel 6. When the feeding barrel 6 reciprocates between the feeding chamber 1 and the melting chamber 3, the feeding barrel 6 can pass through the square box 11. The pair of guide grooves 12 are symmetrically arranged on both sides of the interior of the square box 11 in a vertical direction. The pair of guide edges 7 can be inserted into the pair of guide grooves 12 respectively.

[0052] In some examples, see Figure 1 The guide groove 12 is disposed on the inner wall of the square box 11, that is, a groove on the inner wall of the square box 11. This arrangement facilitates processing and makes the structure more stable. It is understood that in other embodiments, the guide groove 12 may also be designed as a groove fixed on the inner wall of the square box 11, as long as it can achieve the guiding function. This embodiment does not impose too many limitations on this.

[0053] In this embodiment, the feeding bucket 6 is provided with guide edges 7 on both sides. When the feeding bucket 6 reciprocates between the feeding chamber 1 and the melting chamber 3, it needs to pass through the square box 11. When the feeding bucket 6 begins to enter the square box 11, the pair of guide edges 7 should be engaged with the corresponding guide grooves 12 to achieve the functions of limiting and guiding. In this embodiment, the guide structure 2 can limit and guide the feeding bucket 6, which can not only prevent the feeding bucket 6 from spinning or shaking during the descent, but also keep the feeding bucket 6 vertical during the unloading process, making the unloading process more stable and preventing the feeding bucket 6 from tilting and causing the blank material 9 to fall into the melting chamber 3 outside the crucible 15.

[0054] In some embodiments, such as Figure 1As shown, the guide structure 2 also includes a pair of second sensors 13. Each second sensor 13 is disposed in a guide groove 12 and is used to detect whether the guide edge 7 is located in the guide groove 12. The second sensors 13 are connected to the control system, and the control system can control the operation of the lifting device based on the detection data of the second sensors 13.

[0055] In some examples, the second sensor 13 can be a photoelectric sensor or a pressure sensor, etc., as long as it can be used to detect whether the guide edge 7 is located in the guide groove 12.

[0056] The guide structure 2 in this embodiment includes a pair of second sensors 13. When the feeding bucket 6 descends, as the pair of guide edges 7 of the feeding bucket 6 engage with the corresponding guide grooves 12, if both guide edges 7 are engaged with their respective guide grooves 12, both second sensors 13 will receive signals and feed them back to the control system. The control system will then determine that the feeding bucket 6 can continue to descend. If one guide edge 7 fails to engage with its corresponding guide groove 12, the second sensor 13 on that side will feed this error signal back to the control system, which will then prevent the feeding bucket 6 from descending further. This avoids the feeding bucket 6 from spinning or shaking. Using the second sensors 13 to detect the positioning of the guide edges 7 has the advantages of speed and accuracy, avoiding misjudgments caused by manual observation.

[0057] In some embodiments, such as Figure 1 As shown, the feeding mechanism also includes a limiting structure 8. The limiting structure 8 is disposed on the guide edge 7 and near the top of the feeding barrel 6. The limiting structure 8 can be engaged in the guide groove 12 to limit the unloading position of the feeding barrel 6.

[0058] In some examples, such as Figure 1 As shown, the limiting structure 8 is telescopically mounted on the guide edge 7 and connected to the gate valve 14 at the bottom of the feeding barrel 6. When the limiting structure 8 enters the guide groove 12 and can be compressed, the gate valve 14 opens to unload the material.

[0059] In other examples, the limiting structure 8 is slidably disposed on the guide edge 7 and connected to the gate valve 14 at the bottom of the feeding barrel 6. When the limiting structure 8 contacts the top of the guide groove 12 and the feeding barrel 6 continues to descend, the limiting structure 8 slides upward relative to the feeding barrel 6 under the push of the guide groove 12, and the gate valve 14 opens to unload the material.

[0060] In this embodiment, the limiting structure 8 not only limits the unloading position of the feeding barrel 6, but also supports the feeding barrel 6 and shares the tension borne by the lifting device.

[0061] In some embodiments, the feeding mechanism further includes a fault alarm. The fault alarm is connected to the control system.

[0062] In some examples, a fault alarm may include a buzzer and a warning light. This setup allows operators to be promptly alerted to inspect the equipment.

[0063] In this embodiment, the feeding mechanism, in conjunction with the control system, lifting device, first sensor 10, second sensor 13, and fault alarm, monitors the lifting process of the feeding hopper 6 in real time. When the feeding hopper 6 experiences abnormal descent or ascent, the force applied to the lifting device will change drastically. The first sensor 10 monitors this force and feeds it back to the control system. When the control system receives a drastic change in the force, it immediately stops the descent or ascent to avoid feeding failure or equipment damage, and activates the fault alarm to alert the operator for further processing.

[0064] When the feeding bucket 6 descends, the guide edges 7 on both sides of the feeding bucket 6 thread into the guide groove 12. If both sides are threaded in, the two second sensors 13 will receive signals and feed them back to the control system. The control system will determine that the feeding bucket 6 can continue to descend. If one guide edge 7 is not threaded into the corresponding guide groove 12, the second sensor 13 on that guide groove 12 will feed this error signal back to the control system. The control system will then prevent the feeding bucket 6 from descending further, thus avoiding the serious situation of the feeding bucket 6 spinning or shaking.

[0065] In this embodiment, the fault alarm is connected to the control system. When the lifting and lowering of the feeding tank 6 becomes stuck, the control system can promptly remind the operator to check the equipment through the alarm.

[0066] In some embodiments, see Figure 1 The lifting device includes a winch motor and a winding reel 4. The winch motor is connected to the control system. The winding reel 4 is mounted on the output shaft of the winch motor. A flat strip 5 is wound on the winding reel 4, and the free end of the flat strip 5 is connected to the feeding hopper 6 via a hook.

[0067] In some examples, the control system uses a frequency converter to drive the hoist motor of the feeding mechanism to raise and lower, thus completing the feeding process. This setup ensures the control system's precision in controlling the hoist motor and also saves energy.

[0068] In this embodiment, the lifting device uses a flat strap 5 and a hook to connect to the feeding bucket 6, which can achieve a stable connection with the feeding bucket 6 and facilitate the removal and installation of the feeding bucket 6.

[0069] This embodiment also provides a control method for the feeding mechanism in the above embodiment. Figure 2 This is a flowchart of the control method in this embodiment. Figure 2 As shown, the control methods include:

[0070] S1. Control the feeding bucket 6 to descend until the feeding bucket reaches above the guide structure 2.

[0071] Specifically, when the feeding bucket 6 descends to above the guide structure 2, it must stop descending to prepare for the feeding bucket 6 to enter the guide structure 2 and to prevent the feeding bucket 6 from descending too fast and colliding with the guide structure 2.

[0072] S2. Jog down the feeding bucket 6 so that the feeding bucket 6 enters the guide structure 2.

[0073] Specifically, by jogging the feeding bucket 6 to descend, it is beneficial to adjust the position and posture of the feeding bucket 6, ensuring that the feeding bucket 6 smoothly enters the guide structure 2.

[0074] S3. The first sensor 10 is used to monitor the tension on the lifting device in real time. If the tension on the lifting device decreases by a first value, the lifting device stops operating.

[0075] Specifically, during the descent process, the first sensor 10 monitors the tension exerted on the lifting device by the feeding bucket 6 in real time and provides real-time feedback to the control system. The control system uses the data from the first sensor 10 to determine if there are any abnormalities. If everything is normal, the feeding bucket 6 continues to descend. If there is an abnormality, the tension on the lifting device decreases by a first value, the descent stops, and then the fully loaded feeding bucket 6 is controlled to rise until it reaches the rising limit, at which point the operation stops, and the feeding bucket 6 is inspected and reset. The magnitude of the first value can be set according to the actual working conditions and is not limited to the range of 10-30 kg specified in the above embodiment.

[0076] S4. Control the feeding bucket 6 to descend to the unloading position and complete the unloading.

[0077] Specifically, after the feeding tank 6 descends to the unloading position, the gate valve 14 is opened to unload the material. The completion of unloading can be determined by the weight information obtained by the first sensor 10, or by setting a reasonable unloading time according to the size of the feeding tank 6. When the gate valve 14 has been open for the unloading time, the unloading is considered complete by default.

[0078] S5. Control the feeding bucket 6 to rise, and use the first sensor 10 to monitor the tension on the lifting device in real time. If the tension on the lifting device increases by a second value, the lifting device stops operating.

[0079] Specifically, during the rising process of the feeding bucket 6, the first sensor 10 weighs the feeding bucket 6 in real time and feeds the data back to the control system. The control system uses the data from the first sensor 10 to determine if there are any abnormalities. If everything is normal, the feeding bucket 6 continues to rise. If there is an abnormality, the tension on the lifting device increases by a second value, and the operation of the feeding bucket 6 is stopped, awaiting the furnace to be opened for maintenance of the feeding mechanism. The magnitude of the second value can be set according to the actual working conditions and is not limited to the range of 5-15 kg specified in the above embodiment.

[0080] S6. Control the feeding bucket 6 to rise until the feeding bucket 6 returns to the feeding chamber 1.

[0081] Specifically, after the charging bucket 6 returns to the charging chamber 1, the raw material 9 can be added again, and the next charging cycle can be repeated. For example, the loading capacity of the crucible 15 for each furnace is 800 kg, and the maximum loading capacity of the charging bucket 6 is 300 kg. According to the process requirements, it is generally necessary to add material 4 times to completely fill the crucible 15 for each furnace.

[0082] The control method of this embodiment can judge abnormal situations during the lifting and lowering process of the feeding tank 6 and stop the operation of the feeding tank 6 in time, so as to avoid feeding failure or damage to the equipment.

[0083] like Figure 1 As shown, the guide structure 2 includes: a pair of guide edges 7 symmetrically arranged on both sides of the outer surface of the feeding barrel 6. The guide edges 7 extend from the bottom to the top of the feeding barrel 6. The square box 11 is located at the bottom of the feeding chamber 1 and corresponds to the position of the feeding barrel 6. When the feeding barrel 6 reciprocates between the feeding chamber 1 and the melting chamber 3, the feeding barrel 6 can pass through the square box 11. A pair of guide grooves 12 are symmetrically arranged on both sides of the interior of the square box 11 in a vertical direction. The pair of guide edges 7 can be respectively inserted into the pair of guide grooves 12. In some embodiments, such as Figure 3 As shown, the process of guiding the feeding hopper 6 into the guide structure 2 also includes:

[0084] S21. Insert the guide edges 7 on both sides of the feeding bucket 6 into a pair of guide grooves 12 of the guide structure 2 respectively.

[0085] Specifically, when the guide edge 7 of the feeding bucket 6 is inserted into the guide groove 12, it can prevent the feeding bucket 6 from spinning or shaking during the subsequent descent and unloading process, so that the blank material 9 is smoothly fed into the crucible 15.

[0086] S22. When the second sensors 13 in both guide grooves 12 detect the guide edge 7, the feeding barrel 6 is controlled to continue to descend.

[0087] Specifically, if any guide edge 7 fails to engage with the guide groove 12, the second sensor 13 will send an error signal to the control system. The control system will then prevent the feeding bucket 6 from descending further and activate the fault alarm to alert the operator for further processing and adjustments.

[0088] This embodiment uses the second sensor 13 to detect the positioning of the guide edge 7, which has the advantages of being fast and accurate, and avoids misjudgment caused by manual observation.

[0089] like Figure 1 As shown, the feeding mechanism also includes a limiting structure 8, which is disposed on the guide edge 7 and near the top of the feeding barrel 6. The limiting structure 8 can engage in the guide groove 12 to restrict the descent of the feeding barrel 6. In some embodiments, such as Figure 4 As shown, controlling the feeding hopper 6 to descend to the unloading position and completing the unloading includes:

[0090] S41. Jog down the feeding barrel 6 so that the limiting structure 8 on the feeding barrel 6 is engaged in the guide groove 12 of the guide structure 2.

[0091] Specifically, the fact that the limiting structure 8 is engaged with the guide groove 12 of the guide structure 2 indicates that the feeding bucket has reached the unloading position.

[0092] S42. Open the gate valve 14 at the bottom of the feeding tank 6 to unload the material.

[0093] Specifically, the gate valve 14 at the bottom of the feeding bucket 6 can be linked with the limiting structure 8. For example, when the limiting structure 8 is engaged in the guide groove 12 of the guide structure 2, the limiting structure 8 is compressed, and the gate valve 14 opens after the limiting structure 8 is compressed; or, when the limiting structure 8 is engaged in the guide groove 12 of the guide structure 2, and the feeding bucket 6 can continue to descend, the limiting structure 8 is pushed upward relative to the feeding bucket 6 by the guide groove 12, and the gate valve 14 opens when the limiting structure 8 is pushed upward.

[0094] S43. After unloading is completed, close gate valve 14.

[0095] Specifically, if material gets stuck in gate valve 14 when it is closed, gate valve 14 cannot close completely. If it gets stuck in guide structure 2, the feeding bucket 6 will not be able to continue rising. At this time, the pulling force of feeding bucket 6 on the lifting device increases. When the increase in pulling force reaches a second value, the control system will stop feeding bucket 6 from continuing to rise to avoid damaging the equipment.

[0096] The control method in this embodiment closes the gate valve 14 after the feeding bucket 6 has finished unloading, and then proceeds with the upward operation. This can avoid interference between the gate valve 14 and the guide structure 2, and prevent damage to the equipment.

[0097] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0098] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A feeding mechanism for a smelting furnace, characterized in that, include: A charging chamber is located at the top of the smelting furnace and communicates with the smelting chamber of the smelting furnace; a lifting device is provided in the charging chamber; A feeding hopper is connected to the lifting device; The lifting device can drive the feeding bucket to move back and forth between the feeding chamber and the melting chamber; The first sensor is used to monitor the tension borne by the lifting device in real time; A guiding structure is provided for guiding the lifting and lowering of the feeding barrel; the guiding structure includes a pair of guide edges, a square box, a pair of guide grooves, and a pair of second sensors; the pair of guide edges are symmetrically arranged on both sides of the outer surface of the feeding barrel; the guide edges extend from the bottom to the top of the feeding barrel; the square box is located at the bottom of the feeding chamber and corresponds to the position of the feeding barrel; when the feeding barrel reciprocates between the feeding chamber and the melting chamber, the feeding barrel can pass through the square box; the pair of guide grooves are symmetrically arranged on both sides of the interior of the square box in a vertical direction; the pair of guide edges can be inserted into the pair of guide grooves respectively; each second sensor is disposed in one of the guide grooves and is used to detect whether the guide edge is located in the guide groove; The control system is connected to the lifting device and the first sensor respectively, and can control the operation of the lifting device according to the data monitored by the first sensor; during the descent of the feeding bucket: when the tension on the lifting device decreases by a first value, the lifting device stops operating; during the ascent of the feeding bucket: when the tension on the lifting device increases by a second value, the lifting device stops operating; the second sensor is connected to the control system, and the control system can control the operation of the lifting device according to the detection data of the second sensor.

2. The feeding mechanism for a smelting furnace according to claim 1, characterized in that, The feeding mechanism also includes: A limiting structure is provided on the guide edge and near the top of the feeding barrel; the limiting structure can be engaged in the guide groove to limit the unloading position of the feeding barrel.

3. The feeding mechanism for a smelting furnace according to any one of claims 1 to 2, characterized in that, It also includes a fault alarm; the fault alarm is connected to the control system.

4. The feeding mechanism for a smelting furnace according to claim 1, characterized in that, The lifting device includes: A winch motor, which is connected to the control system; A winding reel is mounted on the output shaft of the winch motor; a flat strip is wound on the winding reel, and the free end of the flat strip is connected to the feeding hopper via a hook.

5. A control method for a feeding mechanism for a smelting furnace as described in any one of claims 1 to 4, characterized in that, The method includes: Control the feeding bucket to descend until the feeding bucket reaches above the guide structure; The feeding bucket is lowered by jogging, causing it to enter the guide structure; The lifting device is monitored in real time using a first sensor; if the tension borne by the lifting device decreases from the first value, the lifting device stops operating. Control the feeding hopper to descend to the unloading position and complete the unloading; The material feeding bucket is controlled to rise, and the tension borne by the lifting device is monitored in real time using a first sensor; if the tension borne by the lifting device increases by a second value, the lifting device stops operating. Control the feeding bucket to rise until it returns to the feeding chamber.

6. The control method according to claim 5, characterized in that, The guiding structure includes: A pair of guide edges are symmetrically arranged on both sides of the outer side of the feeding barrel; the guide edges extend from the bottom of the feeding barrel to the top of the feeding barrel; A square box is located at the bottom of the feeding chamber and corresponds to the position of the feeding barrel; when the feeding barrel reciprocates between the feeding chamber and the melting chamber, the feeding barrel can pass through the square box; A pair of guide grooves are symmetrically arranged on both sides of the inside of the square box along the vertical direction; the pair of guide edges can be respectively inserted into the pair of guide grooves; The process of guiding the feeding hopper into the guide structure further includes: The guide edges on both sides of the feeding barrel are respectively inserted into a pair of guide grooves of the guide structure; Once the second sensors in both guide slots detect the guide edge, the feeding bucket is controlled to continue descending.

7. The control method according to claim 5, characterized in that, The feeding mechanism also includes: A limiting structure is provided on the guide edge and near the top of the feeding barrel; the limiting structure can be engaged in the guide groove to restrict the descent of the feeding barrel; The process of controlling the feeding hopper to descend to the unloading position and completing the unloading includes: The feeding barrel is lowered by jogging, causing the limiting structure on the feeding barrel to engage with the guide groove of the guide structure; Open the gate valve at the bottom of the feeding hopper to unload the material; After unloading is completed, close the gate valve.

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