Continuous casting billet cooling water circulation device

Abstract

The utility model relates to the technical field of metallurgy, in particular to a continuous casting billet cooling water circulation device which comprises a circulation tank, the circulation tank is communicated with a tank body for cooling, a partition plate is arranged in the circulation tank and divides the circulation tank into a precipitation tank and a backflow tank, and cooling water in the precipitation tank can flow into the backflow tank. The reflux tank is communicated with the tank body through a reflux pipeline; an auxiliary precipitation mechanism is arranged at the bottom of the precipitation tank, and cooling water in the tank body is introduced into the precipitation tank by the precipitation tank through a drainage mechanism, so that through the arrangement of the circulating tank comprising the reflux tank and the precipitation tank, on one hand, the cooling water containing metal impurities in the tank body for cooling can be guided out for precipitation to reduce the impurities; and on the other hand, the precipitated cooling water is used for flowing back to the cooling tank body, so that the replacement frequency of the cooling water can be greatly reduced, and the impurity content is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a continuous casting billet cooling water circulation device. Background Art

[0002] Continuously cast ingots are plate-shaped, rectangular or circular ingots formed after molten steel is processed through components such as the tundish and crystallizer during the steelmaking process. After the continuous cast ingots are obtained, they need to be transported, cooled and sampled for inspection. Unqualified continuous cast ingots need to be re-melted.

[0003] During the transportation of the continuous casting billet, due to its high surface temperature, directly transporting it to the mist cooling section will cause its surface to cool down quickly. The mist cooling mainly involves spraying cooling water into atomized form onto the surface of the continuous casting billet to take away the heat on its surface. However, impurities will gradually precipitate out during the whole process to pollute the water body. On the one hand, it will affect the atomizing pump body, on the other hand, it will affect the atomizing nozzle. Thirdly, if the cooling water containing impurities is sprayed for a long time, the impurities may be adsorbed on the surface of the continuous casting billet to form an impurity shell, which is not conducive to subsequent rolling processing. Utility Model Content

[0004] In view of the above problems, the utility model provides a continuous casting billet cooling water circulation device.

[0005] The technical solution adopted is that the continuous casting billet cooling water circulation device comprises a circulation groove, the circulation groove is connected with the cooling groove body, wherein a partition plate is arranged in the circulation groove, and the partition plate is divided into a precipitation groove and a reflux groove, and the cooling water in the precipitation groove can flow into the reflux groove;

[0006] The reflux tank is connected with the tank body through a reflux pipe;

[0007] An auxiliary sedimentation mechanism is arranged at the bottom of the sedimentation tank, and the cooling water in the tank body is introduced into the sedimentation tank through the drainage mechanism.

[0008] Optionally, the drainage mechanism includes a drainage pump, a drainage inlet pipe and a drainage discharge pipe; one end of the drainage inlet pipe is connected to the drainage pump, and the other end of the drainage inlet pipe is inserted into the cooling cavity of the tank body;

[0009] One end of the drainage and liquid discharge pipe is communicated with the drainage pump, and the other end of the drainage and liquid discharge pipe is inserted into the sedimentation tank.

[0010] Optionally, the drainage pump is arranged in a sedimentation tank or a cooling chamber.

[0011] Optionally, the reflux pipeline includes a reflux pump, a reflux liquid inlet pipe and a reflux liquid outlet pipe, a circulation main pipe and a circulation branch pipe;

[0012] One end of the reflux liquid inlet pipe is connected to the reflux pump, and the other end of the reflux liquid inlet pipe is inserted into the reflux tank;

[0013] One end of the reflux drain pipe is communicated with a reflux pump, and the other end of the reflux drain pipe is communicated with the main circulation pipe;

[0014] One end of the circulation branch pipe is communicated with the main circulation pipe, and the other end of the circulation branch pipe is inserted into the cooling cavity of the tank body.

[0015] Optionally, the reflux pump is arranged inside or outside the reflux tank.

[0016] Optionally, an overflow hole is arranged in the upper part of the partition plate, and a filter screen is installed in the overflow hole.

[0017] Optionally, a boss is arranged in the upper part of the partition plate, and the overflow hole is arranged on the boss.

[0018] Optionally, the auxiliary precipitation mechanism includes a magnet, and the magnet is arranged at the bottom of the precipitation tank.

[0019] The advantages of the present utility model include:

[0020] 1. By providing a circulation tank including a reflux tank and a precipitation tank, on the one hand, it can lead out the cooling water containing metal impurities in the cooling tank body for precipitation to reduce impurities, and on the other hand, the precipitated cooling water can be used to flow back to the cooling tank body, so that the replacement frequency of the cooling water can be greatly reduced, and the impurity content can be reduced at the same time.

[0021] 2. It solves the problem that the existing aerosol cooling mainly atomizes and sprays the cooling water onto the surface of the continuous casting billet to take away the heat on its surface, but impurities will gradually precipitate and pollute the water body during the whole process. On the one hand, it will affect the atomizing pump body, on the other hand, it will affect the atomizing nozzle, and on the third hand, when spraying the cooling water containing impurities for a long time, the impurities may adsorb on the surface of the continuous casting billet to form an impurity shell, which is not conducive to subsequent rolling processing. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a continuous casting billet cooling water circulation device;

[0023] Figure 2 It is a schematic internal structure diagram of the circulation tank.

[0024] Wherein the reference numerals: 20 is the tank body, 21 is the cooling cavity, 40 is the circulation tank, 41 is the partition plate, 42 is the precipitation tank, 43 is the reflux tank, 44 is the boss, 45 is the overflow hole, 46 is the drainage pump, 47 is the drainage inlet pipe, 48 is the drainage drain pipe, 49 is the magnet, 50 is the reflux pump, 51 is the reflux inlet pipe, 52 is the reflux drain pipe, 53 is the main circulation pipe, 54 is the circulation branch pipe. Specific Embodiments

[0025] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] like Figure 1 and Figure 2 As shown, the continuous casting billet cooling water circulation device comprises a circulation tank 40, wherein the circulation tank 40 is connected to the cooling tank body 20, wherein a partition plate 41 is arranged in the circulation tank 40, and the partition plate 41 is divided into a sedimentation tank 42 and a reflux tank 43, and the cooling water in the sedimentation tank 42 can flow into the reflux tank 43;

[0028] The reflux groove 43 is connected to the groove body 20 through a reflux pipe;

[0029] An auxiliary sedimentation mechanism is disposed at the bottom of the sedimentation tank 42 , and the sedimentation tank 42 introduces the cooling water in the tank body 20 into the sedimentation tank 42 through the drainage mechanism.

[0030] The purpose of this design is to set up a circulation tank including a reflux tank and a sedimentation tank, which can, on the one hand, lead out the cooling water containing metal impurities in the cooling tank body for sedimentation to reduce impurities, and on the other hand, use the precipitated cooling water to flow back to the cooling tank body, which can greatly reduce the frequency of cooling water replacement and reduce the impurity content. This solves the problem that the existing gas mist cooling mainly sprays the cooling water onto the surface of the continuous casting billet to take away the heat on its surface, but impurities will gradually precipitate and pollute the water body during the whole process, which will affect the atomization pump body on the one hand, and the atomization nozzle on the other hand. Thirdly, if the cooling water containing impurities is sprayed for a long time, the impurities may be adsorbed on the surface of the continuous casting billet to form an impurity shell, which is not conducive to subsequent rolling processing.

[0031] In this embodiment, a specific composition of a drainage mechanism is provided, wherein the drainage mechanism includes a drainage pump 46, a drainage liquid inlet pipe 47 and a drainage liquid discharge pipe 48; one end of the drainage liquid inlet pipe 47 is connected to the drainage pump 46, and the other end of the drainage liquid inlet pipe 47 is inserted into the cooling cavity 21 of the tank body 20;

[0032] One end of the drainage pipe 48 is communicated with the drainage pump 46, and the other end of the drainage pipe 48 is inserted into the sedimentation tank 42.

[0033] Meanwhile, the drainage pump 46 is arranged in the sedimentation tank 42 or the cooling cavity 21.

[0034] The purpose of such design is that the cooling water near the bottom in the cooling cavity is pumped into the sedimentation tank by the drainage pump for sedimentation removal or reduction of the impurity content therein, so that it can be recycled multiple times. At the same time, for the position of the drainage pump, on-site workers can set it in the sedimentation tank 42 or the cooling cavity 21 according to the actual size of each tank or cavity.

[0035] In this embodiment, a specific structure of a reflux pipeline is provided, where the reflux pipeline includes a reflux pump 50, a reflux inlet pipe 51, a reflux drain pipe 52, a circulation main pipe 53, and a circulation branch pipe 54;

[0036] One end of the reflux inlet pipe 51 is communicated with the reflux pump 50, and the other end of the reflux inlet pipe 51 is inserted into the reflux tank 43;

[0037] One end of the reflux drain pipe 52 is communicated with the reflux pump 50, and the other end of the reflux drain pipe 52 is communicated with the circulation main pipe 53;

[0038] One end of the circulation branch pipe 54 is communicated with the circulation main pipe 53, and the other end of the circulation branch pipe 54 is inserted into the cooling cavity 21 of the tank body 20.

[0039] Meanwhile, the reflux pump 50 is arranged inside or outside the reflux tank 43.

[0040] The purpose of such design is that the reflux pump exports the cooled water after sedimentation in the reflux tank, which flows through the circulation branch pipe near the cooling cavity via the circulation main pipe and flows into the cooling cavity via the circulation branch pipe, so as to realize the circulation of the cooled water. It should be noted that, in order to improve the circulation effect, usually the circulation branch pipe is set far away from the drainage inlet pipe.

[0041] Furthermore, in this embodiment, an overflow hole 45 is arranged in the upper part of the partition plate 41, and a filter screen is installed in the overflow hole 45. A boss 44 is arranged in the upper part of the partition plate 41, and the overflow hole 45 is arranged on the boss 44.

[0042] The purpose of such design is that after the cooled water with impurities enters the sedimentation tank, the impurities sink downward under the influence of gravity, and the supernatant liquid enters the reflux tank through the overflow hole.

[0043] Meanwhile, the arranged boss can form a gentle slope structure, which is convenient for overflow and sedimentation.

[0044] In this embodiment, the auxiliary precipitation mechanism includes a magnet 49, and the magnet 49 is arranged at the bottom of the precipitation tank 42.

[0045] The purpose of such design is that since the main impurities in the continuous casting billet during aerosol cooling contain iron components, a magnet is arranged at the bottom of the precipitation tank, and the impurities containing iron components can be quickly moved to the bottom through the magnet, shortening the precipitation time.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, 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 casting billet cooling water circulation device, comprising a circulation tank (40), wherein the circulation tank (40) is connected to a cooling tank body (20), and characterized in that: A partition plate (41) is provided in the circulation tank (40), and the partition plate (41) is divided into a sedimentation tank (42) and a reflux tank (43), and cooling water in the sedimentation tank (42) can flow into the reflux tank (43); The reflux groove (43) is connected to the groove body (20) via a reflux pipe; An auxiliary sedimentation mechanism is provided at the bottom of the sedimentation tank (42), and the sedimentation tank (42) introduces cooling water in the tank body (20) into the sedimentation tank (42) through the drainage mechanism.

2. The continuous casting billet cooling water circulation device according to claim 1, characterized in that: The drainage mechanism comprises a drainage pump (46), a drainage liquid inlet pipe (47) and a drainage liquid discharge pipe (48); one end of the drainage liquid inlet pipe (47) is in communication with the drainage pump (46), and the other end of the drainage liquid inlet pipe (47) is inserted into the cooling cavity (21) of the tank body (20); One end of the drainage pipe (48) is in communication with the drainage pump (46), and the other end of the drainage pipe (48) is inserted into the sedimentation tank (42).

3. The continuous casting billet cooling water circulation device according to claim 2, characterized in that: The drainage pump (46) is arranged in the sedimentation tank (42) or the cooling chamber (21).

4. The continuous casting billet cooling water circulation device according to claim 1, characterized in that: The reflux pipeline comprises a reflux pump (50), a reflux liquid inlet pipe (51), a reflux liquid outlet pipe (52), a circulation main pipe (53) and a circulation branch pipe (54); One end of the reflux liquid inlet pipe (51) is connected to the reflux pump (50), and the other end of the reflux liquid inlet pipe (51) is inserted into the reflux tank (43); One end of the reflux drainage pipe (52) is connected to the reflux pump (50), and the other end of the reflux drainage pipe (52) is connected to the circulation main pipe (53); One end of the circulation branch pipe (54) is in communication with the circulation main pipe (53), and the other end of the circulation branch pipe (54) is inserted into the cooling cavity (21) of the tank body (20).

5. The continuous casting billet cooling water circulation device according to claim 4, characterized in that: The reflux pump (50) is arranged inside the reflux groove (43) or outside the reflux groove (43).

6. The continuous casting billet cooling water circulation device according to claim 1, characterized in that: An overflow hole (45) is provided on the upper portion of the partition plate (41), and a filter screen is installed in the overflow hole (45).

7. The continuous casting billet cooling water circulation device according to claim 6, characterized in that: A boss (44) is provided on the upper portion of the partition plate (41), and an overflow hole (45) is provided on the boss (44).

8. The continuous casting billet cooling water circulation device according to claim 1, characterized in that: The auxiliary sedimentation mechanism comprises a magnet (49), and the magnet (49) is arranged at the bottom of the sedimentation tank (42).

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