Continuous conveying and cooling device for cast ingots

Abstract

The invention belongs to the technical field of aluminum ingot casting, and particularly relates to a continuous cast ingot conveying and cooling device which comprises a rack and conveying wheels arranged on the rack, a cooling box is arranged in the middle of the rack, a first guide roller and a second guide roller are symmetrically arranged in the cooling box, and the first guide roller is higher than the second guide roller; the conveying belt obliquely extends downwards towards the middle direction of the cooling box; first spraying assemblies are symmetrically arranged on the inner walls of the two sides of the upper end of the cooling cavity correspondingly and right face the inclined section of the conveying belt. And steam hoods are symmetrically arranged on the two sides of the upper end of the cooling box correspondingly, and the two steam hoods are connected through a steam pipeline. According to the structure, heat exchange equipment does not need to be arranged to recycle water vapor, high-temperature water vapor generated by spraying cooling of the front section can be directly transferred to the spraying position of the rear section to be cooled and recycled based on the cooling equipment, heat exchange equipment does not need to be additionally arranged, cost is low, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum ingot casting, and in particular relates to a device for continuously conveying and cooling ingots. Background Art

[0002] In the existing aluminum ingot casting process, aluminum liquid is injected into the aluminum ingot casting mold, and then the aluminum ingot casting mold is transported on a conveyor belt. During the transportation, the aluminum liquid is cooled and formed, and the aluminum ingot casting mold is flipped with the conveyor belt to face downward. The formed aluminum ingot is automatically demolded under the action of gravity.

[0003] The temperature of the aluminum ingot after demoulding is still high enough, so it is necessary to use conveying equipment to transport the high-temperature aluminum ingot after demoulding to the cooling equipment for cooling, and finally complete the cooling operation of the aluminum ingot. At present, water cooling is generally used to achieve spray cooling of aluminum ingots. The cooling equipment has a sufficient length. Since the high-temperature aluminum ingot at the front end is in direct contact with the spray water, a large amount of high-temperature water vapor will be generated. The high-temperature water vapor diffuses inside and above the cooling equipment, resulting in steam waste. The prior art generally uses heat exchange equipment to exchange high-temperature water vapor through the heat exchange equipment, and then condense and recover it again, but this method undoubtedly requires the addition of heat exchange equipment, which further increases the cost. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present invention provides a continuous conveying and cooling device for ingots, which can recycle high-temperature water vapor based on the cooling equipment itself without adding heat exchange equipment, and has low cost, convenience and speed.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A continuous conveying and cooling device for ingots comprises a frame and a conveying wheel arranged on the frame, two conveying wheels are connected by a conveyor belt, aluminum ingots are arranged on the conveyor belt, a cooling box is arranged in the middle of the frame, a partition is arranged in the cooling box to divide the cooling box into a cooling chamber and a recovery chamber; a first guide roller and a second guide roller are symmetrically arranged inside the cooling box, the height of the first guide roller is higher than the second guide roller, so that the conveyor belt extends downwardly in an inclined direction toward the middle of the cooling box; first spray assemblies are symmetrically arranged on the inner walls of both sides of the upper end of the cooling chamber, and the first spray assembly is arranged opposite to the inclined section of the conveyor belt; steam hoods are symmetrically arranged on both sides of the upper end of the cooling box, the two steam hoods are connected by a steam pipe, and a fan is arranged on the steam pipe; a plurality of grooves are symmetrically arranged on both sides of the upper end of the cooling box, and the grooves connect the cooling chamber and the steam hood; the grooves are arranged at the position of the first spray assembly.

[0007] Optionally, the first spray assembly includes a plurality of spray pipes arranged at a fixed distance, a plurality of spray heads are evenly distributed at the bottom of the spray pipes, both ends of the plurality of spray pipes are connected to a water inlet main pipe, and the groove is arranged between adjacent spray pipes.

[0008] Optionally, a water pump is provided on the outside of the cooling box, the water inlet of the water pump is connected to the recovery chamber, the water outlet of the water pump is connected to the first pipe, the first pipe is connected to the second pipe and the third pipe, the second pipe and the third pipe are respectively connected to the water inlet main pipes of the two first spray assemblies.

[0009] Optionally, second spray assemblies are respectively provided on the inner walls on both sides of the cooling box, and the second spray assemblies face the horizontal section between the two inclined conveyor belts in the cooling chamber.

[0010] Optionally, the first pipe extends into the cooling box, the first pipe is arranged at the upper ends of the two second spray assemblies, a fourth pipe is extended from the bottom end of the first pipe, and the fourth pipe is connected to the second spray assembly.

[0011] Optionally, an overflow pipe is provided on the partition, and the overflow pipe connects the cooling chamber and the recovery chamber.

[0012] Optionally, a plurality of overflow ports 1 are evenly distributed on the circumference of the bottom end of the overflow pipe, an adjusting cylinder is slidably provided on the inner wall of the overflow pipe, a plurality of overflow ports 2 are evenly distributed on the circumference of the upper end of the adjusting cylinder, the adjusting cylinder is connected to a cylinder for transmission, and the cylinder is fixed on the inner wall of the cooling chamber.

[0013] Optionally, a limiting ring is provided on the outer wall of the regulating cylinder at the second bottom end of the overflow port, and when the limiting ring is in close contact with the upper end surface of the overflow pipe, the bottom end of the regulating cylinder extends into the recovery chamber.

[0014] Optionally, one or more adjusting cylinders are provided.

[0015] Optionally, a plurality of spray heads 2 are disposed on the outer side and the bottom side of the second spray assembly.

[0016] The present invention has the following advantages and beneficial effects:

[0017] In the present invention, the conveyor belt is provided with an inclined section and a horizontal section in the cooling box, and the first spray assembly is arranged opposite to the inclined section of the conveyor belt. When the aluminum ingot enters the cooling chamber, in the inclined section, the first spray assembly sprays directly, thereby generating a large amount of high-temperature water vapor. At the same time, the fan is started to draw the high-temperature water vapor on the inlet side to the outlet side, and spray and cool it through the spray assembly on the other side, thereby directly spraying and cooling the high-temperature water vapor, condensing it, and finally returning it to the cooling chamber. Since the aluminum ingot in the horizontal section is completely submerged in the cooling chamber, it can be fully cooled. When the aluminum ingot that has been cooled is tilted and transported out, it is sprayed again through the first spray assembly on the outlet side, thereby achieving the purpose of multiple spray cooling.

[0018] In the present invention, the efficiency of spray cooling can be improved through multi-stage spraying, and the high-temperature water vapor generated by the first spraying can be transported to the end for spray cooling and condensation, and finally descended together with the spray water to spray the aluminum ingots. This structure does not need to set up heat exchange equipment to recover water vapor. The high-temperature water vapor generated by the front-stage spray cooling can be directly transferred to the spraying of the rear stage for cooling and recycling based on the cooling equipment itself. There is no need to add heat exchange equipment, which is low in cost and convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural diagram of the ingot continuous conveying and cooling device provided by the present invention;

[0020] Figure 2 for Figure 1 Front view of

[0021] Figure 3 for Figure 2 Left view of

[0022] Figure 4 for Figure 3 Cross-sectional view along CC direction;

[0023] Figure 5 for Figure 2 Sectional view along the AA direction;

[0024] Figure 6 for Figure 2 Cross-sectional view along the BB direction;

[0025] Figure 7 for Figure 3 Isometric section view along DD direction;

[0026] Figure 8 for Figure 4 A partial enlarged view of point a in the middle;

[0027] Fig. 9 A structural diagram of components such as an overflow pipe and a regulating cylinder provided by the present invention;

[0028] Fig.10 for Fig. 9 Front view of

[0029] Fig.11 for Fig.10 Cross-sectional view along EE direction;

[0030] Fig.12 for Fig.11 A cross-sectional view showing that the height of the middle regulating cylinder is increased and the height of the overflow port 2 is increased;

[0031] Fig.13 for Fig.12 A cross-sectional view of the middle regulating cylinder rising to open the overflow;

[0032] Fig.14 An enlarged view of a portion of the structure of the second spray assembly provided by the present invention;

[0033] Icons: 1-cooling box, 1a-recovery chamber, 1b-cooling chamber, 11-partition, 12-channel, 2-frame, 21-conveyor wheel, 22-first guide roller, 23-second guide roller, 3-fan, 31-steam pipe, 32-steam hood, 4-water pump, 41-first pipeline, 42-second pipeline, 43-third pipeline, 5-conveyor belt, 51-aluminum ingot, 6-first spray assembly, 61-spray pipe, 62-spray head one, 63-water inlet main pipe, 7-second spray assembly, 71-spray head two, 72-fourth pipeline, 8-overflow pipe, 81-overflow port one, 82-adjusting cylinder, 83-limiting ring, 84-overflow port two, 9-cylinder, 91-piston rod. DETAILED DESCRIPTION

[0034] 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 only part of the embodiments of the present invention, not all of the embodiments.

[0035] 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.

[0036] Example

[0037] like Figures 1 to 8As shown, a continuous ingot conveying and cooling device comprises a frame 2 and a conveying wheel 21 arranged on the frame 2, and the two conveying wheels 21 are connected by a conveyor belt 5. In the present invention, the conveyor belt 5 and the conveying wheel 21 are both made of existing technology, such as a sprocket wheel, a chain plate conveying mechanism, or a high temperature resistant belt conveyor. One of the conveying wheels 21 is used as a driving wheel and is connected to a driving motor for transmission.

[0038] like Figures 1 to 8 As shown, a number of aluminum ingots 51 to be cooled are arranged on the conveyor belt 5, and a cooling box 1 is arranged in the middle of the frame 2. A partition 11 is arranged in the cooling box 1 to divide the cooling box 1 into a cooling chamber 1b and a recovery chamber 1a. A certain amount of water is stored in the cooling chamber 1b and the recovery chamber 1a. The first guide roller 22 and the second guide roller 23 are symmetrically arranged inside the cooling box 1. The height of the first guide roller 22 is higher than the second guide roller 23, so that the conveyor belt 5 extends downwardly in an inclined direction toward the middle of the cooling box 1, and finally the conveyor belt 5 has two inclined sections and a lower horizontal section in the cooling box 1. The purpose of this is that the aluminum ingot 51 on the horizontal section in the cooling box 1 can be completely immersed in the water in the cooling chamber 1b to achieve sufficient cooling; while the aluminum ingot 51 on the inclined section in the cooling box 1 is cooled by spraying. The inner walls on both sides of the upper end of the cooling chamber 1b are symmetrically provided with first spray assemblies 6, which are arranged opposite to the inclined section of the conveyor belt 5, and are used to realize the initial spray operation when the aluminum ingot 51 is input, and the terminal spray operation when the aluminum ingot 51 is output. Steam hoods 32 are symmetrically provided on both sides of the upper end of the cooling box 1, and the two steam hoods 32 are connected by a steam pipe 31, and the steam pipe 31 is provided with a fan 3; a plurality of grooves 12 are symmetrically provided on both sides of the upper end of the cooling box 1, and the grooves 12 connect the cooling chamber 1b and the steam hood 32; the grooves 12 are arranged at the position of the first spray assembly 6.

[0039] like Figure 4 As shown, the aluminum ingot 51 is transported to the right side at this time. When the aluminum ingot 51 enters and reaches the inclined conveyor belt 5, it is sprayed by the first spray assembly 6 to achieve preliminary cooling, and a large amount of high-temperature water vapor is generated at this time; the aluminum ingot 51 sprayed by the first spray assembly 6 is then transported to the horizontal section of the conveyor belt 5, and the aluminum ingot 51 completely enters the water body of the cooling chamber 1b and is fully cooled; the aluminum ingot 51 that has been fully cooled is transported to the inclined conveyor belt 5 again, and is sprayed by the first spray assembly 6 at the end, and finally the cooling operation is completed. The high-temperature water vapor generated by the spraying of the first spray assembly 6 at the head end (the end where the aluminum ingot 51 enters) is pumped to the first spray assembly 6 at the end (the end where the aluminum ingot 51 exits) through the fan 3, and the high-temperature water vapor is recovered into the cooling chamber through spray cooling and condensation.

[0040] In the present invention, the conveyor belt 5 is provided with an inclined section and a horizontal section in the cooling box 1, and the first spray assembly 6 is arranged opposite to the inclined section of the conveyor belt 5. When the aluminum ingot 51 enters the cooling chamber 1b, in the inclined section, the first spray assembly 6 sprays directly, and a large amount of high-temperature water vapor is generated. At the same time, the fan 3 is started to draw the high-temperature water vapor on the inlet side to the outlet side, and spray and cool it through the spray assembly on the other side, so that the high-temperature water vapor is directly sprayed to cool down and condense, and finally returns to the cooling chamber 1b. Since the aluminum ingot 51 in the horizontal section is completely submerged in the cooling chamber 1b, it can be fully cooled. When the aluminum ingot 51 that has been cooled is tilted and transported out, it is sprayed again through the first spray assembly 6 on the outlet side, so as to achieve the purpose of multiple spray cooling.

[0041] In the present invention, the efficiency of spray cooling can be improved through multi-stage spraying, and the high-temperature water vapor generated by the first spraying can be transported to the end for spray cooling and condensation, and finally descended together with the spray water to spray the aluminum ingot 51. This structure does not need to set up heat exchange equipment to recover water vapor. The high-temperature water vapor generated by the front-stage spray cooling can be directly transferred to the spraying of the rear stage for cooling and recycling based on the cooling equipment itself. There is no need to add heat exchange equipment, which is low in cost and convenient and fast.

[0042] like Figures 1 to 8 As shown, further, the first spray assembly 6 includes a plurality of spray pipes 61 arranged at a fixed distance, a plurality of spray heads 62 are evenly distributed at the bottom of the spray pipes 61, both ends of the plurality of spray pipes 61 are connected to a water inlet main pipe 63, and the groove 12 is arranged between adjacent spray pipes 61.

[0043] Furthermore, a water pump 4 is provided on the outside of the cooling box 1, and the water inlet of the water pump 4 is connected to the recovery chamber 1a, and the water outlet of the water pump 4 is connected to the first pipe 41, and the second pipe 42 and the third pipe 43 are connected to the first pipe 41, and the second pipe 42 and the third pipe 43 are respectively connected to the water inlet main pipe 63 of the two first spray components 6, so that the water in the recovery chamber 1a can be pumped to the first spray component 6 for spray cooling operation.

[0044] Furthermore, second spray assemblies 7 are respectively provided on the inner walls on both sides of the cooling box 1, and the second spray assembly 7 is directly opposite to the horizontal section between the two sections of the inclined conveyor belts 5 in the cooling chamber 1b. The second spray assembly 7 is used to provide cooling water in real time to ensure that the cooling water temperature in the cooling chamber 1b is low enough to cool the aluminum ingot 51; secondly, the second spray assembly 7 can also have a spraying effect. When the water temperature in the cooling chamber 1b is high enough and the cooling effect cannot be achieved, the water in the cooling chamber 1b needs to be released. Therefore, when the water is released, the liquid level in the cooling chamber 1b drops, and the aluminum ingot 51 cannot be submerged in the water body. Then, the second spray assembly 7 can be used for spraying and cooling, that is, when the water in the cooling chamber 1b is changed, cooling can also be performed without stopping the operation.

[0045] Furthermore, the first pipe 41 extends into the cooling box 1, and the first pipe 41 is arranged at the upper ends of the two second spray assemblies 7. A fourth pipe 72 is extended from the bottom end of the first pipe 41. The fourth pipe 72 is connected to the second spray assembly 7, and cooling water is supplied to the two second spray assemblies 7 through the first pipe 41.

[0046] like Figure 4 , 14 As shown, further, a plurality of spray heads 71 ​​are disposed on the outer side and the bottom side of the second spray assembly 7 .

[0047] like Figures 6-7 As shown in Figures 9 to 13, an overflow pipe 8 is provided on the partition 11. The overflow pipe 8 has a certain height and connects the cooling chamber 1b and the recovery chamber 1a. The height of the overflow pipe 8 determines the height of the liquid level in the cooling chamber. When the liquid level in the cooling chamber 1b is higher than the overflow pipe 8, the water can be overflowed and recovered into the recovery chamber 1a through the overflow pipe 8. A cooling device for cooling water can be provided in the recovery chamber 1a to ensure that the water temperature in the recovery chamber 1a is low enough.

[0048] Further, one or more adjusting cylinders 82 are provided.

[0049] Furthermore, in order to achieve adjustable liquid level in the cooling chamber 1b, an optimized design is made. A plurality of overflow ports 1 81 are evenly distributed on the circumference of the bottom end of the overflow pipe 8, and an adjusting cylinder 82 is slidably provided on the inner wall of the overflow pipe 8, and a plurality of overflow ports 2 84 are evenly distributed on the circumference of the upper end of the adjusting cylinder 82. The adjusting cylinder 82 is connected to the piston rod 91 of the cylinder 9 for transmission, and the cylinder 9 is fixed on the inner wall of the cooling chamber 1b. A limiting ring 83 is provided on the outer wall of the adjusting cylinder 82 at the bottom end of the overflow port 2 84, and when the limiting ring 83 is in close contact with the upper end face of the overflow pipe 8, the bottom end of the adjusting cylinder 82 extends into the recovery chamber 1a (i.e., extends into the bottom end of the partition 11).

[0050] like Figures 9-11 As shown, at this time, the limit ring 83 is close to the upper end surface of the overflow pipe 8, and the bottom end of the regulating cylinder 82 extends into the recovery chamber 1a. When overflowing, water flows through the overflow port 2 84 into the regulating cylinder 82 and finally reaches the recovery chamber 1a at the lower end of the regulating cylinder 82.

[0051] like Fig.12As shown, at this time, the cylinder 9 contracts, and the limit ring 83 is away from the upper end surface of the overflow pipe 8, that is, the height of the overflow port 2 84 increases by H, and the water flows through the overflow port 2 84 into the inside of the regulating cylinder 82, and finally reaches the recovery chamber 1a at the lower end of the regulating cylinder 82. In this way, the height of the overflow port 2 84 can be adjusted online to achieve the adjustment of the liquid level height of the cooling chamber 1b. This method is convenient and fast. The liquid level height of the cooling chamber 1b can be adaptively adjusted based on the number of aluminum ingots 51 cooled in a certain cycle, so as to achieve efficient cooling operation. For example, within a certain period of time, the number of aluminum ingots 51 located in the cooling chamber 1b is 10, and the liquid level height at this time is 70CM. When the number of aluminum ingots 51 located in the cooling chamber 1b is 15 or even more within a certain period of time, the liquid level height at this time can be adjusted to 100CM. The purpose of this is that when the liquid level is low, the volume is small, and the number of aluminum ingots 51 that can be cooled is limited. Therefore, the design of adjustable overflow height can be adaptively adjusted according to the conveying speed of the conveyor belt 5, the number of aluminum ingots 51, etc., ultimately achieving efficient cooling operation.

[0052] like Fig.13 As shown, at this time, the cylinder 9 is completely retracted, the limit ring 83 is away from the upper end surface of the overflow pipe 8, and the regulating cylinder 82 is away from the overflow port 1 81, the overflow port 1 81 is opened, and the water overflows directly from the lowest overflow port 1 81. In this case, the water in the cooling chamber 1b can be discharged and replaced, and at the same time, the second spray assembly 7 is used to spray and cool the aluminum ingot 51.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous ingot conveying and cooling device, comprising a frame and a conveying wheel arranged on the frame, wherein the two conveying wheels are connected by a conveyor belt, and an aluminum ingot is arranged on the conveyor belt, characterized in that : A cooling box is arranged in the middle of the frame, and a partition is arranged in the cooling box to divide the cooling box into a cooling chamber and a recovery chamber; The interior of the cooling box is symmetrically provided with a first guide roller and a second guide roller, wherein the height of the first guide roller is higher than the second guide roller, so that the conveyor belt extends downwardly in an inclined direction toward the middle of the cooling box; The inner walls on both sides of the upper end of the cooling chamber are symmetrically provided with first spray assemblies, and the first spray assemblies are arranged facing the inclined section of the conveyor belt; Steam hoods are symmetrically arranged on both sides of the upper end of the cooling box, and the two steam hoods are connected by a steam pipe, and a fan is arranged on the steam pipe; a plurality of grooves are symmetrically arranged on both sides of the upper end of the cooling box, and the grooves connect the cooling cavity and the steam hoods; the grooves are arranged at the position of the first spray assembly.

2. The ingot continuous conveying and cooling device according to claim 1, characterized in that: The first spray assembly includes a plurality of spray pipes arranged at a fixed distance, a plurality of spray heads are evenly distributed at the bottom of the spray pipes, both ends of the plurality of spray pipes are connected to a water inlet main pipe, and the groove is arranged between adjacent spray pipes.

3. The ingot continuous conveying and cooling device according to claim 2 is characterized in that: A water pump is arranged on the outside of the cooling box, the water inlet of the water pump is connected to the recovery chamber, the water outlet of the water pump is connected to the first pipe, the second pipe and the third pipe are connected to the first pipe, and the second pipe and the third pipe are respectively connected to the water inlet main pipes of the two first spray assemblies.

4. The ingot continuous conveying and cooling device according to claim 3 is characterized in that: Second spray assemblies are respectively arranged on the inner walls of both sides of the cooling box, and the second spray assemblies face the horizontal section between the two inclined conveyor belts in the cooling cavity.

5. The ingot continuous conveying and cooling device according to claim 4 is characterized in that: The first pipe extends into the cooling box, the first pipe is arranged at the upper ends of the two second spray assemblies, a fourth pipe is extended from the bottom end of the first pipe, and the fourth pipe is connected to the second spray assemblies.

6. The ingot continuous conveying and cooling device according to claim 1, characterized in that: An overflow pipe is arranged on the partition, and the overflow pipe is connected with the cooling chamber and the recovery chamber.

7. The ingot continuous conveying and cooling device according to claim 6, characterized in that: The bottom end of the overflow pipe is evenly distributed with a plurality of overflow ports 1, the inner wall of the overflow pipe is tightly slidably provided with an adjustment cylinder, the upper end of the adjustment cylinder is evenly distributed with a plurality of overflow ports 2, the adjustment cylinder is connected to a cylinder for transmission, and the cylinder is fixed on the inner wall of the cooling chamber.

8. The ingot continuous conveying and cooling device according to claim 7, characterized in that: A limiting ring is arranged on the outer wall of the regulating cylinder at the second bottom end of the overflow port. When the limiting ring is in close contact with the upper end surface of the overflow pipe, the bottom end of the regulating cylinder extends into the recovery chamber.

9. The ingot continuous conveying and cooling device according to claim 7, characterized in that: The regulating cylinder is provided with one or more.

10. The ingot continuous conveying and cooling device according to claim 4, characterized in that: A plurality of spray heads 2 are arranged on the outer side and the bottom side of the second spray assembly.

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