Anti-surge metal liquid shunt uniform temperature pouring ladle

Abstract

The present application relates to metal liquid forming device technical field, specifically to a kind of surge protection metal liquid shunt isothermal ladle. Including upper ladle and lower ladle, the bottom of upper ladle is provided with effluent pipe, effluent pipe is directly opposite lower ladle, the end portion of lower ladle away from upper ladle is provided with liquid outlet, lower ladle is provided with two-stage shunt plate and primary shunt plate, two-stage shunt plate is provided with multiple shunt holes, shunt hole is provided with plug, two-stage shunt plate is provided with driving device for driving plug to move up and down. The present application, by setting primary shunt plate, make the metal liquid that flows to lower ladle temperature uniform at each position in the rear of lower ladle, metal liquid flows out through the shunt hole of two-stage shunt plate, the position of plug is adjusted by driving device, the opening of shunt hole is controlled, and then the metal liquid flow of each position of liquid outlet cross section is controlled, finally realize the regulation of the metal liquid temperature of each position of liquid outlet, reach the effect of isothermal when metal liquid flows out from the liquid outlet of lower ladle.

Description

Technical Field

[0001] This invention relates to the field of liquid metal forming apparatus, specifically to a surge-proof liquid metal diversion and uniform temperature casting vessel. Background Technology

[0002] In the casting of non-ferrous metal wide plates, the metal needs to be melted into liquid and cast into wide plates by a casting machine. With the maturity of rolling mill technology, the manufacturing width of non-ferrous metal wide plates has reached more than 2 meters. This requires that the temperature of the molten metal is uniform at all positions of the cross-section of the pouring outlet so that the performance of each part of the wide plate is consistent. This is the key control indicator for the processing of non-ferrous metal wide plates. Figure 1 In the existing structure, molten metal flows from the outlet pipe 101 of the input flow channel 1 to the lower casting vessel 2. This results in a high temperature of the molten metal in the lower casting vessel 2 directly opposite the outlet pipe 101, and a low temperature of the molten metal on both sides of the lower casting vessel 2 away from the outlet pipe 101. As a result, when the molten metal flows to the outlet 201 of the lower casting vessel 2, the temperature difference between the molten metal on both sides and the molten metal in the middle of the lower casting vessel 2 is too large. This will cause uneven thickness of the formed wide plate, inconsistent casting structure, and even defects such as shrinkage cavities and fractures in the wide plate, affecting the quality and performance consistency of the formed wide plate. Therefore, a flow distribution device is needed to adjust the flow rate of the molten metal at different positions, and to control the temperature of the molten metal at each position in the casting vessel by the flow rate of the molten metal, so as to avoid excessive temperature difference and ensure the quality of the formed wide plate. Furthermore, the following situation may arise: due to the height difference between the outlet pipe of the inlet channel and the bottom of the casting vessel, the gravitational potential energy of the molten metal is converted into kinetic energy under the influence of gravity. This causes the molten metal to continuously generate waves as it flows into the casting vessel. The continuous accumulation of these waves leads to surge phenomena, which allow a large amount of air to enter the molten metal, resulting in defects such as porosity in the billet and affecting product quality. Moreover, if the height of the waves generated by the molten metal exceeds the inner cavity height of the casting vessel, molten metal may overflow, causing serious production accidents. Therefore, a surge protection device is needed to disperse the waves, prevent surge phenomena, improve billet quality, and protect personal safety. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a surge-proof molten metal diversion and uniform temperature casting pot that can adjust the temperature of molten metal in various parts of the casting pot outlet, so as to ensure the forming quality of non-ferrous metal wide plates and effectively prevent the occurrence of surge phenomena.

[0004] The technical solution adopted by the present invention to solve its technical problems is a surge-proof metal liquid shunting and temperature equalizing pouring pot, which includes an input flow trough and a lower pouring pot. An outflow pipe is provided at the bottom of the input flow trough, and the outflow pipe is facing the inner cavity of the lower pouring pot. An liquid outlet is provided at the end of the lower pouring pot away from the input flow trough. At least one first-stage shunting plate is provided in the lower pouring pot, and the first-stage shunting plate is arranged between the outflow pipe and the liquid outlet. A second-stage shunting plate is provided between the first-stage shunting plate and the liquid outlet. A plurality of shunting holes are provided along the width direction of the second-stage shunting plate, and a plug for opening or closing the shunting holes is provided in the shunting holes. The upper end of the plug is fixedly connected with an adjusting rod, and a driving device for driving the adjusting rod to move up and down is provided on the second-stage shunting plate.

[0005] Further, the first-stage shunting plate is arc-shaped, the outflow pipe is opposite to the top end of the first-stage shunting plate, and the concave surface of the first-stage shunting plate is opposite to the second-stage shunting plate.

[0006] Further, a driving mechanism for driving the first-stage shunting plate to move away from or close to the inner cavity of the lower pouring pot is provided on the lower pouring pot.

[0007] Further, there are three first-stage shunting plates, which are arranged in a "pin" shape in the inner cavity of the lower pouring pot.

[0008] Further, the shunting holes are provided at the bottom end of the second-stage shunting plate.

[0009] Further, a temperature detection device for detecting the temperature of the liquid outlet is provided on the lower pouring pot.

[0010] Further, the temperature detection device is a thermal imager.

[0011] Further, the adjusting rod is arranged on the side of the second-stage shunting plate close to the liquid outlet, and a guiding seat is provided on the second-stage shunting plate, and the adjusting rod is inserted into the guiding seat.

[0012] Further, sliding grooves are vertically provided on both sides of the second-stage shunting plate, and sliding blocks adapted to the sliding grooves are provided in the lower pouring pot, and the second-stage shunting plate can move up and down relative to the lower pouring pot.

[0013] Further, a first overflow port and a quick drain port are respectively provided on both sides of the lower pouring pot. The bottom of the first overflow port is flush with the bottom surface of the inner cavity of the lower pouring pot. A normally closed gate is provided at the first overflow port, a quick response gate is provided at the quick drain port, and a second overflow port is provided above the drain port.

[0014] The beneficial effects of the present invention are:

[0015] 1. By setting up a primary and secondary flow divider, the temperature of the molten metal flowing into the lower pouring pot is made uniform at all positions in the rear of the lower pouring pot. Then, the molten metal continues to flow from the rear of the lower pouring pot to the outlet. At the outlet, the molten metal flows out through the diversion holes of the secondary flow divider. By adjusting the position of the plug through the drive device, the opening of the diversion holes is controlled, thereby controlling the flow rate of molten metal at each position of the outlet cross-section. Finally, the temperature of the molten metal at each position of the outlet is regulated, achieving the effect of uniform temperature and flow of molten metal when it flows out of the lower pouring pot outlet.

[0016] 2. It should also be noted that when molten metal flows from the outlet pipe of the inlet channel into the bottom pouring pan, due to the height difference between the outlet pipe of the inlet channel and the bottom of the bottom pouring pan, the gravitational potential energy of the molten metal is converted into kinetic energy under the action of gravity. This causes the molten metal to continuously generate waves as it flows into the bottom pouring pan. The continuous accumulation of waves will result in a surge phenomenon. The surge phenomenon will cause a large amount of air to enter the molten metal, which will cause defects such as pores in the plate and affect the product quality. Furthermore, if the wave height generated by the molten metal exceeds the inner cavity height of the casting vessel, molten metal may overflow, causing a serious production accident. The primary flow divider is located between the outlet and the liquid outlet of the liquid outlet pipe, which can disperse the waves generated by the molten metal and effectively prevent surges. At the same time, since the width of the liquid outlet of the casting vessel is greater than the width of the rear end of the casting vessel, if a surge occurs, the molten metal is more likely to overflow from the liquid outlet. If the surge energy is conducted into the casting cavity, it will cause fluctuations in the unsolidified molten metal at the front end of the casting cavity, resulting in defects in the semi-solidified billet in the casting cavity. By setting a secondary flow divider between the primary flow divider and the liquid outlet, the waves can be blocked behind the secondary flow divider, preventing surges at the liquid outlet. Attached Figure Description

[0017] Figure 1 This is a structural diagram of existing technology;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention;

[0019] Figure 3 yes Figure 2 A schematic diagram with the input flow channel removed;

[0020] Figure 4 yes Figure 3 Top view with drive unit installed;

[0021] Figure 5 yes Figure 4 A sectional view in use;

[0022] Figure 6 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 7 This is a schematic diagram of the first embodiment of the two-stage diverter;

[0024] Figure 8 yes Figure 7 Sectional view along line AA;

[0025] Figure 9 This is a schematic diagram of a second embodiment of the secondary flow divider;

[0026] Figure 10 yes Figure 9 Sectional view along line BB.

[0027] Reference numerals: 100-Input channel; 101-Output pipe; 102-Pouring pot; 103-First-stage diverter plate; 104-Second-stage diverter plate; 105-Temperature detection device; 106-Outlet; 107-Diverter hole; 108-Plug; 109-Adjusting rod; 110-Drive device; 111-Guide seat; 112-Drive mechanism; 113-Slide groove; 114-Slider; 115-First overflow port; 116-Quick drain port; 117-Second overflow port. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 2-10 As shown, the present invention discloses a surge-resistant liquid metal diversion and equalization casting vessel, comprising an input flow channel 100 and a lower casting vessel 102. An outlet pipe 101 is provided at the bottom of the input flow channel 100, and the outlet pipe 101 is directly opposite the inner cavity of the lower casting vessel 102. An outlet port 106 is provided at the end of the lower casting vessel 102 away from the input flow channel 100. At least one primary diversion plate 103 is provided inside the lower casting vessel 102, and the primary diversion plate 103 is located at the outlet and the liquid outlet. Between the primary flow divider 103 and the outlet 106, a secondary flow divider 104 is provided. The secondary flow divider 104 has a plurality of flow divider holes 107 along its width direction. A plug 108 for opening or closing the flow divider hole 107 is provided in the flow divider hole 107. An adjusting rod 109 is fixedly connected to the upper end of the plug 108. A driving device 110 for driving the adjusting rod 109 to move up and down is provided on the secondary flow divider 104.

[0030] The input channel 100 stores molten metal flowing from the melting furnace. The molten metal in the input channel 100 flows into the casting vessel 102 through the outlet pipe 101. The primary diverter plate 103 is an arc-shaped or triangular steel plate, and its connection to the inner cavity of the casting vessel 102 can be welded or integrally formed. The primary diverter plate 103 diverts the molten metal flowing from the input channel 100, ensuring a uniform distribution of the molten metal within the inner cavity of the casting vessel 102. After being diverted by the primary diverter plate 103, the molten metal accumulates on the rear side of the secondary diverter plate 104 and is discharged through the diversion holes 107 on the secondary diverter plate 104, finally flowing into the continuous casting machine through the outlet 106. The plug 108 needs to be designed according to the shape of the diversion holes 107. (See [reference needed]). Figure 9 and Figure 10 If the diversion orifice 107 is a circular orifice, the plug 108 shall be a conical head; see also Figure 7 and Figure 8 If the diversion orifice 107 is a square hole or other irregular hole, the plug 108 can be a gate. The plug 108 is used to control the opening of the diversion orifice 107, which controls the amount of molten metal flowing out of the diversion orifice 107. When the temperature of the molten metal in a certain part of the outlet 106 is low, the opening of the corresponding diversion orifice 107 is increased; when the temperature of the molten metal in a certain part of the outlet 106 is high, the opening of the corresponding diversion orifice 107 is decreased. The connection between the adjusting rod 109 and the plug 108 can be welded or integrally formed. The drive mechanism 112 can be an electric push rod or a screw jack. Since the drive device 110 needs to work under high temperature conditions, if an electric motor is used to power the up and down movement of the adjusting rod 109, motor failure may occur. Preferably, the drive device 110 is a hydraulic cylinder or a pneumatic cylinder.

[0031] It should also be noted that when molten metal flows from the outlet pipe 101 of the input channel 100 into the lower pouring pot 102, due to the height difference between the outlet pipe 101 of the input channel 100 and the bottom of the lower pouring pot 102, the gravitational potential energy of the molten metal is converted into kinetic energy under the action of gravity. This causes the molten metal to continuously generate waves as it flows into the lower pouring pot 102. The continuous accumulation of waves will result in a surge phenomenon. The surge phenomenon will cause a large amount of air to enter the molten metal, which will cause defects such as pores in the plate and affect the product quality. Furthermore, if the wave height generated by the molten metal exceeds the inner cavity height of the lower casting vessel 102, molten metal may overflow, causing a serious production accident. The primary flow divider 103 is located between the outlet of the liquid outlet pipe and the outlet 106, which can disperse the waves generated by the molten metal and effectively prevent the occurrence of surges. At the same time, since the width of the outlet 106 of the lower casting vessel 102 is greater than the width of the rear end of the lower casting vessel 102, if a surge occurs, the molten metal is more likely to overflow from the outlet 106. If the surge energy is conducted into the casting cavity, it will cause the unsolidified molten metal at the front end of the casting cavity to fluctuate, resulting in defects in the semi-solidified billet in the casting cavity. By setting a secondary flow divider 104 between the primary flow divider 103 and the outlet 106, the waves can be blocked behind the secondary flow divider 104, preventing surges from occurring at the outlet 106.

[0032] To ensure a more uniform flow of molten metal and prevent its accumulation on the primary distributor plate 103, further details can be found in the following section. Figure 3 , Figure 4 and Figure 5 The primary flow divider 103 is arc-shaped, with the top of the outlet pipe 101 facing the top of the primary flow divider 103, and the concave surface of the primary flow divider 103 facing the secondary flow divider 104. The arrangement of the outlet pipe 101 and the top of the primary flow divider 103 ensures that the molten metal flowing from the outlet pipe 101 can flow to both sides of the primary flow divider 103 under its influence, with equal flow rates on both sides. The concave surface of the primary flow divider 103 facing the secondary flow divider 104 prevents the molten metal from accumulating on the primary flow divider 103.

[0033] Further, see Figure 4 and Figure 5 The lower casting pot 102 is equipped with a drive mechanism 112 that drives the primary flow divider 103 away from or towards the inner cavity of the lower casting pot 102. The drive mechanism 112 can be a screw jack or a hydraulic cylinder (only one drive mechanism 112 is shown in the figure). After casting is completed, the drive mechanism 112 drives the primary flow divider 103 away from the lower casting pot 102, which can better achieve the cleaning of the lower casting pot 102.

[0034] To distribute the molten metal more evenly, further, refer to Figure 3 and Figure 4 , there are three first-stage flow dividers 103, which are arranged in a "pin" shape in the inner cavity of the lower pouring ladle 102. The two lower ends of the first flow divider are respectively opposite to the tops of the two lower first-stage flow dividers 103 below, so that the molten metal can be divided multiple times, making the temperature of each part of the molten metal the same when it contacts the second-stage flow divider 104.

[0035] To drain the molten metal in the lower pouring ladle 102 completely, further, refer to Figure 7 and Figure 9 , the flow dividing holes 107 are arranged at the bottom end of the second-stage flow divider 104.

[0036] To enable workers to better understand the temperature of the molten metal in each part of the liquid outlet 106, further, refer to Figure 2 , Figure 3 and Figure 4 , a temperature detection device 105 for detecting the temperature of the liquid outlet 106 is provided on the lower pouring ladle 102. The temperature detection device 105 can use an electronic thermometer. By using the reading of the electronic thermometer, similarly, the temperature detection device 105 can use temperature sensors. Multiple temperature sensors are buried side by side at the liquid outlet 106, and each temperature sensor detects the temperature of the molten metal in a certain area. The temperature sensors are connected to a computer, and on the computer, workers can understand the temperature of the molten metal in each part of the liquid outlet 106 in real time and adjust the opening degree of the corresponding flow dividing holes 107 in time.

[0037] To be able to more intuitively display the temperature of the molten metal at the liquid outlet 106, further, the temperature detection device 105 is a thermal imager. Similarly, an infrared thermometer can also be used. The temperature of the molten metal detected by the temperature detection device 105 is displayed on the computer. When the difference between the temperature of a certain part of the molten metal and the set temperature value exceeds ±T, the opening degree of the corresponding flow dividing hole 107 is adjusted, and then the temperature of the corresponding part of the molten metal is adjusted. This T can be any value between 3 - 20 °C.

[0038] To prevent the adjusting rod 109 from contacting the molten metal and prevent the adjusting rod 109 from not being able to move up and down after the molten metal solidifies, further, refer to Figure 2 , Figure 7 and Figure 9 , the adjusting rod 109 is arranged on the side of the second-stage flow divider 104 close to the liquid outlet 106. A guide seat 111 is provided on the second-stage flow divider 104, and the adjusting rod 109 is inserted into the guide seat 111.

[0039] To be able to conveniently disassemble the second-stage flow divider 104, further, refer to Figure 6The secondary diversion plate 104 has vertically arranged grooves 113 on both sides, and the lower pouring pot 102 has a slider 114 adapted to the grooves 113. The secondary diversion plate 104 can move up and down relative to the lower pouring pot 102. The grooves 113 can be dovetail grooves, and the slider 114 can be dovetail blocks. Alternatively, the grooves 113 can be T-grooves, and the slider 114 can be T-blocks.

[0040] Further, see Figure 3 and Figure 4 The pouring vessel 102 has a first overflow port 115 and a rapid discharge port 116 on both sides. The bottom of the first overflow port 115 is flush with the bottom surface of the inner cavity of the pouring vessel 102. A normally closed gate is provided at the first overflow port 115, and a rapid reaction gate is provided at the rapid discharge port 116. A second overflow port 117 is provided above the discharge port 116. Before casting the plate, the molten metal needs to be placed in the pouring vessel 102 for preheating. The first overflow port 115 is used to discharge the molten metal after preheating. After preheating is completed, the normally closed gate blocks the first overflow port 115 to prevent the molten metal from flowing out. After the wide plate is cast, the remaining molten metal is discharged through the rapid discharge port 116. At the same time, the rapid discharge port 116 also functions as a safety gate. In the event of leakage or other accidents, the rapid reaction gate quickly opens the rapid discharge port 116 to drain the liquid in time. When there is too much molten metal in the lower pouring pot 102, in order to prevent the molten metal from splashing out of the lower pouring pot 102 and ensure safety, the molten metal flows out from the second overflow port 117 when the molten metal level reaches a certain height.

[0041] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A surge-proof molten metal diversion and equalization pouring vessel, comprising an input flow channel (100) and a pouring vessel (102), wherein an outlet pipe (101) is provided at the bottom of the input flow channel (100), the outlet pipe (101) is directly opposite the inner cavity of the pouring vessel (102), and an outlet port (106) is provided at the end of the pouring vessel (102) away from the input flow channel (100), characterized in that: At least one first-stage flow splitter plate (103) is arranged inside the lower pouring pot (102). The first-stage flow splitter plate (103) is arranged between the outflow pipe (101) and the liquid outlet (106). A second-stage flow splitter plate (104) is arranged between the first-stage flow splitter plate (103) and the liquid outlet (106). A plurality of flow splitting holes (107) are arranged along the width direction of the second-stage flow splitter plate (104). A plug (108) for opening or closing the flow splitting holes (107) is arranged in the flow splitting holes (107). The upper end of the plug (108) is fixedly connected with an adjusting rod (109). A driving device (110) for driving the adjusting rod (109) to move up and down is arranged on the second-stage flow splitter plate (104). A temperature detection device (105) for detecting the temperature of the liquid outlet (106) is arranged on the lower pouring pot (102).

2. The surge protection device for diverting and equalizing liquid metal as described in claim 1, characterized in that: The first-stage flow splitter plate (103) is arc-shaped. The outflow pipe (101) is opposite to the top end of the first-stage flow splitter plate (103). The concave surface of the first-stage flow splitter plate (103) is opposite to the second-stage flow splitter plate (104).

3. The surge protection device for diverting and equalizing liquid metal as described in claim 2, characterized in that: A driving mechanism (112) for driving the first-stage flow splitter plate (103) to move away from or close to the inner cavity of the lower pouring pot (102) is arranged on the lower pouring pot (102).

4. The surge-proof liquid metal diversion and uniform temperature casting pot as described in claim 2, characterized in that: There are three first-stage flow splitter plates (103), which are arranged in a "pin" shape in the inner cavity of the lower pouring pot (102).

5. The surge-proof liquid metal diversion and equalization casting pot as described in claim 1, characterized in that: The flow splitting holes (107) are arranged at the bottom end of the second-stage flow splitter plate (104).

6. The surge-proof liquid metal diversion and equalization casting pot as described in claim 1, characterized in that: The temperature detection device (105) is a thermal imager.

7. The surge-proof molten metal diversion and equalization casting pot as described in claim 1, characterized in that: The adjusting rod (109) is arranged on one side of the second-stage flow splitter plate (104) close to the liquid outlet (106). A guide seat (111) is arranged on the second-stage flow splitter plate (104). The adjusting rod (109) is inserted into the guide seat (111).

8. The surge-proof molten metal diversion and equalization casting pot as described in claim 1, characterized in that: Chute grooves (113) are vertically arranged on both sides of the second-stage flow splitter plate (104). Sliders (114) adapted to the chute grooves (113) are arranged inside the lower pouring pot (102). The second-stage flow splitter plate (104) can move up and down relative to the lower pouring pot (102).

9. A surge-proof liquid metal diversion and equalization casting pot as described in any one of claims 1-8, characterized in that: A first overflow port (115) and a liquid discharge port (116) are respectively arranged on both sides of the lower pouring pot (102). The bottom of the first overflow port (115) is flush with the bottom surface of the inner cavity of the lower pouring pot (102). A normally closed gate is arranged at the first overflow port (115). A quick-response gate is arranged at the liquid discharge port (116). A second overflow port (117) is arranged above the liquid discharge port (116).

Images