High-temperature melt online shunting device and method

Abstract

The invention discloses a high-temperature melt on-line shunting device and method.The shunting device comprises a main channel, a shunting channel is formed in the main channel, the main channel is axially perpendicular to the shunting channel, and a shunting opening is formed in the side, connected with the shunting channel, of the main channel; the melt part intercepting mechanism is arranged on the main channel, is positioned at the downstream of the shunting port and is used for increasing the liquid level of the high-temperature melt in the main channel; the emergency cut-off mechanism is arranged at the end, close to the flow dividing opening, of the flow dividing ditch. And during shunting, the melt part interception mechanism falls into the main channel, so that the high-temperature melt in the main channel flows into the shunting channel. The shunting channel is arranged on the main channel, so that the high-temperature melt can quickly and smoothly flow into the shunting channel from the main channel, and the shunting efficiency and the response speed are improved; meanwhile, due to the arrangement of the flow dividing openings and the application of the flow intercepting mechanism of the melt part, the flow dividing flow can be flexibly adjusted according to actual requirements, and the flexibility and controllability of the flow dividing system are further enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of high-temperature melt processing, and in particular relates to a high-temperature melt online diversion device and method. Background Art

[0002] There are many ways to treat high-temperature melts, and smelters usually use a combination of multiple technologies to treat the melt. Taking blast furnace ironmaking as an example, the byproduct slag produced in the process mainly relies on a mature and high-vitrification water quenching process for treatment, supplemented by other methods such as dry granulation. Dry granulation has become the focus of development for many steel mills due to its significant advantages such as low cost and high efficiency. However, due to the limitations of the current technical level, its processing capacity is still limited and it is impossible to fully process all the slag produced in each furnace.

[0003] In actual operation, the slag ditch is usually designed as a single branch pointing to a processing system. Therefore, while dry granulation is adopted, part of the slag still needs to be processed through the water quenching process, which inevitably involves the diversion operation of the slag. With the continuous development and improvement of high-temperature melt processing technology, when multiple processing methods are adopted, online diversion of the generated high-temperature melt has become an inevitable link. However, the existing diversion device has low diversion safety and flow controllability during the diversion process, which cannot ensure the smooth progress of the blast furnace ironmaking process. Summary of the invention

[0004] The object of the present invention is to provide a high-temperature melt online diversion device and method to solve the technical defects of the existing diversion devices in the prior art, that is, the diversion safety and flow controllability are low during the diversion process, and the smooth progress of the blast furnace ironmaking process cannot be ensured.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a high-temperature melt online diversion device is provided, comprising: A main groove, on which a diversion groove is arranged, the main groove and the diversion groove are axially perpendicular to each other, and a diversion port is opened on one side where the main groove and the diversion groove are connected; A melt partial interception mechanism is provided on the main groove and is located downstream of the diversion port, and is used to increase the high-temperature melt level in the main groove; The emergency cut-off mechanism is arranged at one end of the diversion ditch close to the diversion port; During diversion, a partial melt interception mechanism falls into the main groove, so that the high-temperature melt in the main groove flows into the diversion groove.

[0006] Furthermore, the bottom surface of the diversion groove is located above the bottom surface of the main groove; The melt part interception mechanism includes an interception lifting device and a melt part interception gate, wherein the interception lifting device is arranged at the top of the main groove, and the bottom of the interception lifting device is connected to the melt part interception gate, and is used to drop the melt part interception gate into the main groove; Or, the interception and lifting device is used to lift the melt part interception gate upward from the main groove; A high-temperature flow meter is provided on the diversion ditch, and the high-temperature flow meter is connected to the interception and lifting device by signal.

[0007] Furthermore, the width of the melt-part shutoff gate increases from the bottom to the top of the melt-part shutoff gate; Among them, the top width of the melt-part intercepting gate is greater than or equal to the top width of the main groove, and the bottom width of the melt-part intercepting gate is less than the bottom width of the main groove. When the melt-part intercepting gate is dropped into the main groove, there is a gap between the two sides of the melt-part intercepting gate and the wall of the main groove.

[0008] Furthermore, a flow opening is provided on the melt partial interception gate, and the flow opening is used for melt circulation.

[0009] Furthermore, the emergency cutoff mechanism includes an emergency lifting mechanism, an emergency gate and a sinking step, the emergency lifting mechanism is arranged at the top of the diversion ditch, and the bottom of the emergency lifting mechanism is connected to the emergency gate; The sinking step is arranged at one end of the diversion ditch close to the diversion port, and the emergency gate is movably connected to the sinking step.

[0010] Furthermore, the emergency gate is axially perpendicular to the diversion ditch.

[0011] Furthermore, it also includes a trench cover, which is arranged on the top of the main trench and the diversion trench to keep the melt in the main trench and the diversion trench warm.

[0012] Furthermore, it also includes a melt processing device, which is connected to one end of the diversion groove away from the diversion port.

[0013] Furthermore, the cross-sections of the main groove and the branch groove are U-shaped.

[0014] In a second aspect, a high-temperature melt online diversion method is provided, the method being performed using the high-temperature melt online diversion device as described above, comprising: During diversion, the interception lifting mechanism is controlled to drive the interception gate of the melt part to fall into the main groove, so that the high-temperature melt level in the main groove is higher than the bottom surface of the diversion port, and diverted to the diversion groove; Measuring the high-temperature melt flow signal diverted to the diversion groove by a high-temperature flow meter, and adjusting the immersion depth of the melt-part diversion gate by the melt-part diversion gate to control the diversion flow; In case of emergency, the emergency lifting mechanism is controlled to drop the emergency gate plate to the sunken step in the diversion ditch.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a diversion groove on the side wall of the main groove, the high-temperature melt can flow quickly and smoothly from the main groove into the diversion groove, which improves the efficiency and response speed of the diversion; at the same time, the setting of the diversion port and the use of the partial interception mechanism of the melt can fall into the main groove during diversion, effectively raising the liquid level of the high-temperature melt in the main groove, and can flexibly adjust the diversion flow according to actual needs, further enhancing the flexibility and controllability of the diversion system.

[0016] 2. The bottom surface of the diversion groove is located above the bottom surface of the main groove. During the non-diversion period, the melt will flow normally in the main groove and will not enter the diversion groove. This device does not affect the current production process.

[0017] 3. The bottom width of the intercepting gate is smaller than the width inside the main groove, and the top width is greater than or equal to the width of the upper surface of the main groove. This ensures that even when the gate falls completely into the main groove, there must be a gap between the gate and the main groove to avoid melt adhesion during the diversion process. The flow port on the surface of the melt partial intercepting gate is set so that the melt can still flow smoothly into the diversion groove through a specific channel when the intercepting gate falls, avoiding the situation where the melt level suddenly rises and overflows due to complete obstruction by the gate. The surrounding and surface of the melt partial intercepting gate have flow capacity, and the diversion method is partial interception, thereby improving the safety and stability of the entire diversion process.

[0018] 4. The emergency lifting mechanism is set at the top of the diversion ditch and is directly connected to the emergency gate. In an emergency, the gate can be quickly lifted or lowered through the lifting mechanism to achieve rapid cutoff of the melt, which is of great significance for preventing the expansion of accidents and protecting equipment and personnel safety.

[0019] 5. When the emergency gate is lowered, it is perpendicular to the axis of the diversion groove, and the cooperation with the sinking step ensures that the gate can fit closely to the groove wall, forming an effective seal, which can ensure that the melt will not flow out from the gap between the gate and the groove wall.

[0020] 6. The trench cover isolates the main trench and the diversion trench from the external environment, reducing the impact of the external environment on the melt in the trench, helping to maintain the temperature and flow state of the melt stable, and ensuring the smooth progress of the diversion process.

[0021] 7. Treating the melt through a melt processing device can make it flow more evenly and stably into subsequent processing links, which helps to optimize the diversion effect and ensure that the melt in the diversion groove can enter different processing paths according to the predetermined proportion and flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the connection between the main channel and the diversion channel in the high-temperature melt online diversion device provided by the present invention; Figure 2 A schematic cross-sectional view of the main channel and the diversion channel in the high-temperature melt online diversion device provided by the present invention; Figure 3 A schematic diagram of a melt-part shutoff gate in a high-temperature melt online diversion device provided by the present invention; Figure 4 A schematic diagram of an emergency gate in a high-temperature melt online diversion device provided by the present invention; Figure 5 A schematic diagram of the cooperation between the emergency gate and the bottom surface of the diversion groove in the high-temperature melt online diversion device provided by the present invention; Figure 6 A flow chart of the high-temperature melt online diversion method provided by the present invention; Among them: 1. Main ditch; 101. Ditch cover; 102. Intercepting and lifting device; 103. Melt partial intercepting gate; 2. Diversion ditch; 201. Emergency lifting mechanism; 202. Emergency gate; 203. Sinking step; 204. High temperature flow meter. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] There are many ways to treat high-temperature melts, and smelters usually use a combination of multiple technologies to treat the melt. Taking blast furnace ironmaking as an example, the byproduct slag produced in the process mainly relies on a mature and high-vitrification water quenching process for treatment, supplemented by other methods such as dry granulation. Dry granulation has become the focus of development for many steel mills due to its significant advantages such as low cost and high efficiency. However, due to the limitations of the current technical level, its processing capacity is still limited and it is impossible to fully process all the slag produced in each furnace.

[0030] In actual operation, the slag ditch is usually designed as a single branch pointing to a processing system. Therefore, while dry granulation is adopted, part of the slag still needs to be processed through the water quenching process, which inevitably involves the diversion operation of the slag. With the continuous development and improvement of high-temperature melt processing technology, when multiple processing methods are adopted, online diversion of the generated high-temperature melt has become an inevitable link. However, the existing diversion device has low diversion safety and flow controllability during the diversion process, which cannot ensure the smooth progress of the blast furnace ironmaking process.

[0031] In order to solve the above technical defects, the inventor provides a high-temperature melt online diversion device and method.

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 5 As shown, an embodiment of the present invention, in the first aspect, provides a high-temperature melt online diversion device, comprising: a main groove 1, on which a diversion groove 2 is provided, the cross-sections of the main groove 1 and the diversion groove 2 are U-shaped, the main groove 1 and the diversion groove 2 are axially perpendicular, and a diversion port is provided on the side where the main groove 1 and the diversion groove 2 are connected; a melt partial interception mechanism, which is arranged on the main groove 1 and is located downstream of the diversion port, and is used to increase the liquid level of the high-temperature melt in the main groove 1; an emergency cut-off mechanism, which is arranged at one end of the diversion groove 2 close to the diversion port; wherein, during diversion, the melt partial retention mechanism falls into the main groove 1, so that the high-temperature melt in the main groove 1 flows into the diversion groove 2. In the above structure, by setting the diversion groove 2 on the main groove 1 and making the two axially perpendicular, the high-temperature melt can flow quickly and smoothly from the main groove 1 to the diversion groove 2, thereby improving the efficiency and response speed of the diversion; at the same time, the setting of the diversion port and the use of the partial melt interception mechanism can flexibly adjust the diversion flow according to actual needs, further enhancing the flexibility and controllability of the diversion system. The partial melt interception mechanism can fall into the main groove 1 during diversion, effectively raising the high-temperature melt level in the main groove 1, helping to stabilize the melt flow state in the main groove 1, reducing fluctuations and sputtering, thereby improving the safety and stability of the entire diversion process.

[0033] like Figure 1As shown, the bottom surface of the diversion groove 2 is located above the bottom surface of the main groove 1, ensuring that the high-temperature melt can flow smoothly and naturally into the diversion groove 2 during diversion, reducing the resistance of the melt flow, and improving the efficiency and smoothness of the diversion. The melt partial interception mechanism includes an interception lifting device 102 and a melt partial interception gate 103. The interception lifting device 102 is arranged at the top of the main groove 1, and the bottom of the interception lifting device 102 is connected to the melt partial interception gate 103, which is used to drop the melt partial interception gate 103 into the main groove 1, and there is a gap between the melt partial interception gate 103 and the inner bottom surface of the main groove 1; or, the interception lifting device 102 is used to lift the melt partial interception gate 103 from the main groove 1 upward; a high-temperature flowmeter 204 is arranged on the diversion groove 2, and the high-temperature flowmeter 204 is connected to the interception lifting device 102 signal. Specifically, the melt partial interception mechanism is composed of an interception lifting device 102 and a melt partial interception gate 103. The design realizes precise control of the diversion flow rate. Through the up and down movement of the interception lifting device 102, the position of the melt partial interception gate 103 in the main groove 1 can be flexibly adjusted, thereby changing the opening of the diversion port and precisely controlling the diversion flow rate of the melt. The melt partial interception gate 103 has a gap with the inner bottom surface of the main groove 1, which not only ensures the smooth flow of the melt, but also avoids the friction and wear between the melt partial interception gate 103 and the groove bottom, thereby extending the service life of the equipment. A high-temperature flow meter 204 is provided on the diversion groove 2, and the high-temperature flow meter 204 is connected to the interception and lifting device 102 by signal, thereby realizing automatic and intelligent monitoring of the diversion process. The high-temperature flow meter 204 can detect the melt flow in the diversion groove 2 in real time, and transmit the signal to the interception and lifting device 102, so that it can automatically adjust the position of the melt part interception gate 103 according to actual needs, thereby maintaining the stability of the diversion flow. This automatic and intelligent control method not only improves the accuracy and reliability of the diversion process, but also reduces the labor intensity of the operators and improves the work efficiency.

[0034] Furthermore, if Figure 3As shown, the width of the melt portion intercepting gate 103 increases from the bottom to the top of the melt portion intercepting gate 103; wherein, the top width of the melt portion intercepting gate 103 is greater than or equal to the top width of the main groove 1, and the bottom width of the melt portion intercepting gate 103 is less than the bottom width of the main groove 1. When the melt portion intercepting gate 103 falls into the main groove 1, there is a gap between the two sides of the melt portion intercepting gate 103 and the wall of the main groove 1. In the above structure, even if the melt partial interception gate 103 completely falls inside the main groove 1, it can be ensured that the melt partial interception gate 103 extending into the main groove 1 will not be completely in contact with the wall or bottom of the main groove 1, thereby preventing the melt from sticking and causing the main groove 1 to be blocked and the melt partial interception gate 103 from being unable to be lifted. Therefore, the bottom width of the melt partial interception gate 103 is smaller than the bottom width of the main groove 1, so that when the melt partial interception gate 103 falls into the main groove 1, the contact area with the bottom surface of the main groove 1 is relatively small, which helps to reduce the flow resistance of the melt at the diversion port, so that the melt can flow more smoothly into the diversion groove 2, thereby improving the flow characteristics of the melt; at the same time, since the bottom width of the melt partial interception gate 103 is narrow, when the diversion flow needs to be adjusted, the interception lifting device 102 only needs a small lifting distance to change the opening of the diversion port, thereby improving the flexibility of the diversion control and being able to more accurately control the diversion flow of the melt.

[0035] like Figure 3 As shown, a flow port is provided on the melt partial interception gate 103, and the flow port is used for melt circulation, and the shape of the flow port is circular, rectangular or trapezoidal. The setting of the flow port ensures that when the melt falls on the melt partial interception gate 103, the wall gap and the flow port can ensure that when the diversion operation is performed, the melt level in the main groove 1 will not be higher than the surface of the main groove 1, thereby preventing the occurrence of wall overflow accidents, so that the melt can still flow smoothly into the diversion groove 2, avoiding the situation that the melt cannot flow due to complete obstruction by the melt partial interception gate 103, thereby improving the diversion efficiency and ensuring the timely processing of the melt. In addition, the existence of the flow port helps to improve the flow state of the melt at the diversion port, reduce the formation of eddies and turbulence, and enable the melt to flow into the diversion groove 2 more smoothly, thereby improving the stability of the entire diversion process. Figure 2As shown, the emergency shutoff mechanism includes an emergency lifting mechanism 201, an emergency gate 202 and a sinking step 203. The emergency lifting mechanism 201 is arranged at the top of the diversion ditch 2, and the bottom of the emergency lifting mechanism 201 is connected to the emergency gate 202; the sinking step 203 is arranged at one end of the diversion ditch 2 close to the diversion port, and the emergency gate 202 is movably connected to the sinking step 203. Specifically, the emergency lifting mechanism 201 is arranged at the top of the diversion ditch 2 and is directly connected to the emergency gate 202, so that in an emergency, the emergency gate 202 can be quickly lifted or lowered by the emergency lifting mechanism 201 to achieve rapid cutoff of the melt, which is of great significance for preventing the expansion of accidents and protecting the safety of equipment and personnel. Secondly, the emergency gate 202 is movably connected to the sinking step 203, ensuring that the emergency gate 202 can be stably seated on the sinking step 203 when it is lowered, forming an effective seal to prevent melt leakage. At the same time, the movable connection also facilitates the rapid lifting and lowering of the emergency gate 202, thereby improving the efficiency of emergency treatment. Finally, the emergency lifting mechanism 201 provides an additional safety barrier for the high temperature melt processing system. Under normal circumstances, the mechanism is in a standby state and does not affect the normal diversion operation, but in an emergency, it can respond quickly and effectively cut off the melt flow to prevent the situation from deteriorating.

[0036] It is worth noting that the structures of the interception lifting device 102 and the emergency lifting mechanism 201 are the same, and can be driven manually or electrically, and the structures of the melt part interception gate 103 and the emergency gate 202 are also the same; when the interception lifting device 102 is electrically driven, the interception lifting device 102 includes a driving motor, a screw and a mounting frame, the mounting frame is installed on the main groove 1, the screw is threadedly connected to the mounting frame, the driving motor is installed on the top of the mounting frame, fixedly connected to the screw, the bottom of the screw is fixedly connected to the melt part interception gate 103, and the driving motor drives the screw to drive the melt part interception gate 103 to move up and down; when the interception lifting device 102 is manual, it includes a handwheel, a screw and a mounting frame, one end of the screw is connected to the handwheel, and the other end is screwed in the mounting frame and fixed to the melt part interception gate 103.

[0037] In this embodiment, the emergency gate 202 is axially perpendicular to the diversion groove 2. When the emergency gate 202 is lowered, the axially perpendicular design of the emergency gate 202 and the diversion groove 2 ensures that the emergency gate 202 can fit closely to the groove wall to form an effective seal. This sealing performance is very important for preventing melt leakage, especially in the case of emergency cutoff, which can ensure that the melt will not flow out from the gap between the gate and the groove wall. Figure 2As shown, the structure also includes a trench cover 101, which is arranged on the top of the main trench 1 and the diversion trench 2. The trench cover 101 is used to keep the melt inside the main trench 1 and the diversion trench 2 warm. Furthermore, the diversion structure also includes a melt processing device, which is connected to the end of the diversion trench 2 away from the diversion port. The setting of the trench cover 101 first provides safety protection for the equipment and operators, preventing injuries caused by personnel accidentally falling into the trench, and also preventing debris from falling into the trench, affecting the flow of the melt or causing equipment failure. The trench cover 101 isolates the main trench 1 and the diversion trench 2 from the external environment, reducing the impact of the external environment on the melt in the trench, helping to keep the temperature and flow state of the melt stable, and ensuring the smooth progress of the diversion process. For high-temperature melts, the setting of the trench cover 101 helps to reduce heat loss and reduce the heat exchange rate between the melt and the external environment, thereby helping to maintain the temperature of the melt.

[0038] In a second aspect, a high-temperature melt online diversion method is provided, wherein the method is performed using the high-temperature melt online diversion device as described above, such as Figure 6 As shown, including: S101. During diversion, the interception and lifting mechanism is controlled to drive the partial interception gate of the melt to fall into the main groove, so that the liquid level of the high-temperature melt in the main groove is higher than the bottom surface of the diversion port, and the melt is diverted to the diversion groove; illustratively, when performing an online diversion operation, the interception and lifting device 102 controls the partial interception gate 103 of the melt to fall into the main groove 1, reducing the flow area in the main groove 1, thereby raising the liquid level of the melt in the main groove 1. When the liquid level is higher than the bottom surface of the diversion port, the melt begins to enter the diversion groove 2, thereby realizing online diversion.

[0039] S102. Measure the high-temperature melt flow signal diverted into the diversion groove through a high-temperature flow meter, and adjust the immersion depth of the melt portion diversion gate through the melt portion diversion gate, thereby controlling the diversion flow; illustratively, the high-temperature flow meter 204 is interlocked with the diversion lifting device 102, and according to the flow signal required for diversion, the diversion lifting device 102 is controlled to adjust the immersion depth of the melt portion diversion gate 103 in the main groove 1, thereby adjusting the melt level height of the diversion groove 2, thereby adjusting the diversion flow.

[0040] S103, in case of emergency, the emergency lifting mechanism is controlled to drop the emergency gate plate to the sinking step in the diversion ditch. For example, when the online diversion process is performed, if the liquid level of the main ditch 1 continues to rise, the melt interception device 102 fails, the melt processing system fails, the lining of the diversion ditch 2 is burned through, etc., and the diversion needs to be interrupted urgently, the emergency lifting mechanism 201 is controlled to drop the emergency gate plate 202 to block the diversion ditch 2, so as to achieve emergency interruption.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A high-temperature melt online diversion device, characterized in that: include: A main groove (1) is provided with a diversion groove (2), the main groove (1) and the diversion groove (2) are axially perpendicular to each other, and a diversion port is provided on one side where the main groove (1) and the diversion groove (2) are connected; A melt partial interception mechanism, arranged on the main groove (1) and located downstream of the diversion port, for raising the liquid level of the high-temperature melt in the main groove (1); An emergency cut-off mechanism is arranged at one end of the diversion groove (2) close to the diversion port; During diversion, the melt portion interception mechanism falls into the main groove (1), so that the high-temperature melt in the main groove (1) flows into the diversion groove (2).

2. The high-temperature melt online diversion device according to claim 1, characterized in that: The bottom surface of the diversion groove (2) is located above the bottom surface of the main groove (1); The melt-part intercepting mechanism comprises an intercepting lifting device (102) and a melt-part intercepting gate (103), wherein the intercepting lifting device (102) is arranged at the top of the main channel (1), and the bottom of the intercepting lifting device (102) is connected to the melt-part intercepting gate (103) for dropping the melt-part intercepting gate (103) into the main channel (1); Alternatively, the interception and lifting device (102) is used to lift the melt portion interception gate (103) upward from the main groove (1); A high-temperature flow meter (204) is provided on the diversion ditch (2), and the high-temperature flow meter (204) is signal-connected to the interception and lifting device (102).

3. The high-temperature melt online diversion device according to claim 2, characterized in that: The width of the melt-part intercepting gate (103) increases from the bottom to the top of the melt-part intercepting gate (103); The top width of the melt-part intercepting gate (103) is greater than or equal to the top width of the main groove (1), and the bottom width of the melt-part intercepting gate (103) is less than the bottom width of the main groove (1). When the melt-part intercepting gate (103) is placed in the main groove (1), there is a gap between the two sides of the melt-part intercepting gate (103) and the wall surface of the main groove (1).

4. The high-temperature melt online diversion device according to claim 3, characterized in that: The melt portion intercepting gate (103) is provided with a flow opening, and the flow opening is used for melt flow.

5. The high-temperature melt online diversion device according to claim 1, characterized in that: The emergency shutoff mechanism comprises an emergency lifting mechanism (201), an emergency gate (202) and a sinking step (203); the emergency lifting mechanism (201) is arranged at the top of the diversion ditch (2), and the bottom of the emergency lifting mechanism (201) is connected to the emergency gate (202); The sinking step (203) is arranged at one end of the diversion ditch (2) close to the diversion port, and the emergency gate (202) is movably connected to the sinking step (203).

6. The high-temperature melt online diversion device according to claim 5, characterized in that: The emergency gate (202) and the diversion channel (2) are axially perpendicular.

7. The high-temperature melt online diversion device according to claim 1, characterized in that: It also comprises a groove cover (101), wherein the groove cover (101) is arranged on the top of the main groove (1) and the diversion groove (2) and is used to keep the melt in the main groove (1) and the diversion groove (2) warm.

8. The high-temperature melt online diversion device according to claim 1, characterized in that: It also comprises a melt processing device, which is connected to an end of the diversion groove (2) away from the diversion port.

9. The high-temperature melt online diversion device according to claim 1, characterized in that: The cross-sections of the main groove (1) and the diversion groove (2) are U-shaped.

10. A high-temperature melt online diversion method, characterized in that: The method is carried out using the high-temperature melt online diversion device according to any one of claims 1 to 9, comprising: During diversion, the interception lifting mechanism is controlled to drive the interception gate of the melt part to fall into the main groove, so that the high-temperature melt level in the main groove is higher than the bottom surface of the diversion port, and diverted to the diversion groove; Measuring the high-temperature melt flow signal diverted to the diversion groove by a high-temperature flow meter, and adjusting the immersion depth of the melt-part diversion gate by the melt-part diversion gate to control the diversion flow; In case of emergency, the emergency lifting mechanism is controlled to drop the emergency gate plate to the sunken step in the diversion ditch.

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