Rapid cooling curtain type spraying device

Abstract

The invention discloses a rapid cooling curtain type spraying device, and belongs to the technical field of workpiece cooling. The device comprises a water spraying pipe and a cover plate, the cover plate is arranged above the water spraying pipe, and the cover plate and the water spraying pipe are arranged in the first direction; a water spraying seam in the length direction of the water spraying pipe is formed in the upper end of the water spraying pipe, the cover plate comprises a water retaining part and two water guiding parts, the two water guiding parts are arranged on the front side and the rear side of the water retaining part, water in the water spraying pipe is sprayed upwards to the water retaining part from the water spraying seam and then falls down along the two water guiding parts, and a to-be-cooled workpiece penetrates between the water spraying pipe and the cover plate in the second direction. The cooling effect and the working stability can be effectively considered.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece cooling, and in particular to a rapid cooling curtain-type spraying device. Background Art

[0002] In the steel smelting industry, it is necessary to water cool the workpiece that has just been heated to quickly reduce the temperature of the workpiece. In the prior art, the method of water cooling the heated workpiece generally adopts a spray type or a flow type. Among them, the spray type is to use a group of short-distance water mist nozzles to spray water mist on the surface of the workpiece to take away the heat. Although the cooling effect is better, multiple nozzles are required to work continuously, and the nozzles are prone to blockage or failure after working for a long time. The flow type is to directly place the water outlet on the upper surface of the corresponding workpiece and cool it by water gravity. Although this cooling method has a simple structure and is not prone to failure, it has a small cooling range and a relatively poor cooling effect.

[0003] Therefore, it is difficult to take into account both cooling effect and working stability in the prior art water cooling method for heated workpieces. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide a rapid cooling curtain spray device which can effectively take into account both cooling effect and working stability.

[0005] The objective of the present invention is achieved through the following technical solutions: A rapid cooling curtain-type spray device comprises a water spray pipe and a cover plate, wherein the cover plate is arranged above the water spray pipe, and the cover plate and the water spray pipe are both arranged along a first direction; a water spray slot is arranged at the upper end of the water spray pipe along its length direction, and the cover plate comprises a water retaining part and two water guiding parts, and the two water guiding parts are arranged at the front and rear sides of the water retaining part; water in the water spray pipe is sprayed upward from the water spray slot to the water retaining part, and then falls along the two water guiding parts, and a workpiece to be cooled passes between the water spray pipe and the cover plate along a second direction.

[0006] Preferably, a flow guide structure consisting of two inclined surfaces is provided in the water spray pipe near the water spray seam.

[0007] Preferably, a plurality of support blocks are provided at the lower end of the water spray pipe, and a positioning groove adapted to the shape of the lower part of the water spray pipe is provided on the support block.

[0008] Preferably, the lower portion of the water spray pipe has a positioning structure whose width gradually increases from bottom to top.

[0009] Preferably, the water spray pipe comprises two angle steels, one side of the two angle steels are connected to each other, and the water spray seam is formed between the other side of the two angle steels.

[0010] Preferably, support plates are provided below the left and right ends of the cover plate, and the water spray pipe is connected between the two support plates.

[0011] Preferably, a water injection pipe is connected to the support plate at the opposite side of the support plate where the water spray pipe is connected, and an opening connecting the water spray pipe and the water injection pipe is provided on the support plate.

[0012] Preferably, the water retaining portion and the water guiding portion have an arc-shaped flow guiding structure connected to each other.

[0013] Preferably, the first direction and the second direction are perpendicular to each other.

[0014] Preferably, the width of the water spraying slit is 1 mm.

[0015] The advantages of the present invention are: 1. Water is sprayed from the tube in a waterfall curtain-like manner from bottom to top through a thin slit, ensuring full coverage of the cooling effect on the lower part of the workpiece. The water sprayed upward from the gap between the workpieces onto the cover plate falls downward along the front and rear water guides of the cover plate to the upper part of the workpiece, cooling the upper part of the workpiece twice, so that the workpiece can be fully cooled effectively through one water spraying action, with good cooling effect; 2. The entire spraying work is completed by using a thin slit on the water spray pipe. It has a simple structure, is easy to install, is not prone to failure, and has guaranteed working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a rapid cooling curtain spray device provided in Example 1 of this specification; Figure 2 A side view of a rapid cooling curtain spray device provided in Example 1 of this specification; Figure 3 A top view of a rapid cooling curtain spray device provided in Example 1 of this specification; Figure 4 A schematic diagram of the structure of a water spray pipe provided in Example 1 of this specification; Figure 5 A schematic diagram of the structure of the support block provided in Example 1 of this specification; Figure 6 A schematic diagram of a front water flow upward spraying of a rapid cooling curtain-type spraying device provided in Example 1 of this specification; Figure 7 A schematic diagram of a side water flow upward spraying of a rapid cooling curtain-type spraying device provided in Example 1 of this specification; Figure 8 A top view of a rapid cooling curtain spray device provided in Example 2 of this specification; Fig. 9A schematic diagram of the structure of the cover plate provided in Example 3 of this specification; In the figure: 1-support plate; 2-support block; 21-positioning groove; 3-spray pipe; 31-spray seam; 32-inclined surface; 301-angle steel; 4-water injection pipe; 5-cover plate; 51-water retaining part; 52-water guiding part; 53-heat sink; 6-steel pipe. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Example 1 like Figure 1-3 As shown, the present embodiment provides a rapid cooling curtain-type spray device, which is welded with stainless steel and includes a support plate 1, a support block 2, a water spray pipe 3, a water injection pipe 4, and a cover plate 5. The left and right support plates 1 are used as support components of the entire device, the cover plate 5 is welded between the upper ends of the two support plates 1, the water spray pipe 3 is welded between the lower parts of the two support plates 1, the cover plate 5 is arranged in the same direction as the water spray pipe 3, and an injection pipe 4 is welded on the outer side of the two support plates 1. Correspondingly, the support plate 1 has an opening connecting the water spray pipe 3 and the injection pipe 4; the upper end of the water spray pipe 3 is provided with a water spray seam 31 along its length, and the width of the water spray seam 31 is designed to be 1 mm, which can not only save water but also ensure the water spray pressure. Since the spray pipe 3 is long and will generate a downward reaction force when spraying water upward, in order to reduce the supporting pressure at the welding point between the spray pipe 3 and the support plate 1, a plurality of support blocks 2 are evenly arranged along the length direction of the spray pipe 3 at the lower end, and the support blocks 2 are supported on the ground by other supporting components (not shown in the figure). The cover plate 5 has a structure with a high middle part and gradually lowered sides. The higher part is used as a water retaining part 51, which corresponds to the position of the spray seam 31 up and down, and is used to block the water flow and spread the water flow to the surroundings; the gradually lowered parts on both sides of the cover plate 5 are used as water guides 52, which are used to guide the water flow dispersed from the water retaining part 51 to fall downward in a concentrated manner to ensure the stability of the cooling effect.

[0019] like Figure 6 and 7As shown, the main working principle of the device is as follows: block the water injection pipe 4 at one end and inject water into the water injection pipe 4 at the other end; or when the water pressure of the single-end water injection cannot meet the requirements, water can be injected into the water injection pipes 4 at both ends at the same time. After the injected water fills the water spray pipe 3, it is sprayed upward through the water spray slit 31 under the action of water pressure to form a waterfall-like water curtain. The workpiece to be cooled passes between the water spray pipe 3 and the cover plate 5. The specific conveying direction can be perpendicular to the length direction of the water spray pipe 3. Taking the steel pipe 6 as an example, multiple steel pipes 6 are conveyed synchronously along their length direction at a certain interval. During the process of passing through the water curtain, the lower part of the steel pipe 6, that is, at least 50% of the surface area of ​​the entire steel pipe, is directly in contact with the water curtain and is cooled, forming the first cooling effect on the steel pipe 6. The water curtain between adjacent steel pipes 6 is not blocked by the steel pipe and continues to move upward until it is blocked by the cover plate 5, and then spreads along the lower side of the cover plate 5, and finally falls to the upper part of the steel pipe 6 along the front and rear water guides 52 to cool the upper part of the steel pipe 6. Although the water flow sprayed upward onto the cover plate 5 is not directly above the steel pipe 6, the water flow will spread directly above the steel pipe 6 when it spreads on the cover plate 5. At the same time, in the process of the water flow flowing downward along the two water guides 52, part of the water will flow directly above the steel pipe 6. Therefore, part of the water falling from the cover plate 5 will fall to the upper part of the steel pipe 6, forming a second cooling effect on the steel pipe 6. At the same time, since the water guide 52 has two front and rear parts, the upper part of the steel pipe will be cooled twice in the process of conveying the steel pipe 6, so the cooling effect on the upper part of the steel pipe 6 is guaranteed. In addition, when the water flow falls from the cover plate 5 to the steel pipe, it will splash again to form water droplets or water mist, and fall on the steel pipe or other steel pipes, forming a third cooling effect on the steel pipe. Therefore, the device can form a second or even third cooling effect on the steel pipe through a single water spraying action, and the overall cooling effect is good. Furthermore, even if some water does not touch the steel pipe during the whole process, the water has a long contact time with the air during the process of being sprayed upward from the water spraying slit 31 to the cover plate 5 and then falling from the cover plate 5 to the ground, and can exchange heat with the hotter air in the device, which can reduce the air temperature in the device to a certain extent and also help cool the steel pipe. At the same time, the structure of the whole device is simple, and the water spraying action is completed only through a steel pipe with a slit, which is not prone to failure and has high working stability.

[0020] Specifically, the cover plate 5 is an integrally formed arc structure. On the one hand, the arc structure makes the connection between the water retaining part 51 and the water guiding part 52 smoother, and the water sprayed to the water retaining part 51 is easier to flow to the water guiding part 52, reducing the amount of water falling directly from the water retaining part 51, thereby ensuring that the water can fall more concentratedly along the water guiding part 52, ensuring the stability of the cooling effect; on the other hand, even if the direction of the water flow sprayed from the water spraying pipe 3 deviates slightly, it will be stably guided to the water guiding parts 52 on both sides under the action of the arc structure, ensuring the cooling effect. At the same time, the integrally formed arc structure is also easier to process, which is conducive to reducing processing costs.

[0021] like Figure 4 As shown, in order to ensure the stability of the direction of the water flow sprayed from the water spray pipe 3, to ensure the stability of the water curtain state formed, and thus to ensure the cooling effect, a flow guide structure consisting of two inclined surfaces 32 is provided in the water spray pipe 3 near the water spray slot 31, so that no matter whether the water flow state in the water spray pipe 3 fluctuates, the direction of the water flow sprayed from the water spray slot 31 can be maintained stable. If a round pipe is used, the direction of the water flow sprayed from the water spray slot 31 is prone to shaking, the water curtain state is unstable, and the cooling effect is affected.

[0022] like Figure 4 and 5 As shown, in order to ensure the stability of the position of the water spray pipe 3 and avoid shaking due to water flow fluctuations in the pipe, thereby affecting the state of the water curtain, a positioning groove 21 adapted to the shape of the lower part of the water spray pipe 3 is provided on the support block 2, thereby preventing the various parts of the entire water spray pipe 3 from shaking left and right. In order to further prevent the water spray pipe 3 from shaking circumferentially, the lower part of the water spray pipe 3 has a positioning structure with a width that gradually increases from bottom to top, specifically in the shape of an inverted triangle, which can not only effectively prevent the water spray pipe 3 from shaking circumferentially, but also the triangular introduction structure makes the assembly of the two more convenient and easy to assemble in place.

[0023] like Figure 4 As shown, based on the above two requirements, this embodiment uses two angle steels 301 to weld and form the water spray pipe 3, one side of the two angle steels 301 is welded to each other, and the other side of the two angle steels 301 forms a water spray seam 31. That is, only two angle steels are used, and through one welding operation, the design requirements of the formation of the water spray seam 31, the water spraying guide structure 32 and the position stabilization structure of the water spray pipe 3 can be met, which greatly saves processing time and cost, and is more convenient to implement.

[0024] Example 2 like Figure 8 As shown, the difference from Example 1 is that the conveying direction of the steel pipe to be cooled is at an acute angle to the length direction of the water spray pipe 3, rather than the perpendicular relationship in Example 1. Of course, in actual use, there is no need to adjust the conveying direction of the steel pipe, but only to adjust the installation direction of the device, that is, to rotate the device as a whole to a certain angle. The specific rotation angle is adjusted according to the spacing between the steel pipes to meet the following purposes. Figure 8Taking the middle state as an example, two streams of water A and B are sprayed upward onto the cover plate 5 through the gaps on both sides of the steel pipe Y, wherein the water flow A just falls on the upper part of the steel pipe Y along the diversion a1 of the rear water guide 52, and the water flow A just falls on the upper part of the steel pipe X along the diversion a2 of the front water guide 52; the water flow B just falls on the upper part of the steel pipe Y along the diversion b2 of the front water guide 52, and the water flow B just falls on the upper part of the steel pipe Z along the diversion b1 of the rear water guide 52. In this way, the water flow rate received by the upper part of the steel pipe is easier to guarantee, and the cooling effect is better. Compared with Example 1, since this embodiment requires the entire device to be rotated by a certain angle, the number of steel pipes that can pass through at the same time will be affected to a certain extent when other parameters remain unchanged.

[0025] Example 3 like Fig. 9 As shown, on the basis of Example 1 or Example 2, a heat sink 53 is provided on the upper side of the cover plate 5. Since the cover plate 5 is always above the hot steel pipe, and the heat flow will continue to rise, the cover plate 5 has a relatively high temperature. Therefore, when the water flow with a relatively low temperature passes through the cover plate 5 and falls downward, it will absorb part of the heat on the cover plate 5, causing the water temperature to rise to a certain extent, affecting the cooling effect of the water falling on the steel pipe. In this embodiment, the heat sink 53 is provided on the upper side of the cover plate 5 to improve the efficiency of the heat dissipation of the cover plate 5 to the outside, thereby reducing the heat transferred to the water, which helps to improve the cooling effect on the steel pipe.

[0026] The above is only a preferred specific embodiment of the present invention, which is an implementation method based on the overall concept of the present invention, and the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rapid cooling curtain spray device, characterized in that: It includes a water spray pipe and a cover plate, the cover plate is arranged above the water spray pipe, and the cover plate and the water spray pipe are both arranged along the first direction; a water spray gap is arranged along the length direction of the water spray pipe at the upper end, the cover plate includes a water retaining part and two water guiding parts, and the two water guiding parts are arranged on the front and rear sides of the water retaining part. After the water in the water spray pipe is sprayed upward from the water spray gap to the water retaining part, it falls along the two water guiding parts, and the workpiece to be cooled passes between the water spray pipe and the cover plate along the second direction.

2. A rapid cooling curtain spray device according to claim 1, characterized in that: A flow guide structure consisting of two inclined surfaces is arranged in the water spray pipe near the water spray seam.

3. A rapid cooling curtain spray device according to claim 1, characterized in that: A plurality of support blocks are arranged at the lower end of the water spray pipe, and a positioning groove which is adapted to the shape of the lower part of the water spray pipe is arranged on the support block.

4. A rapid cooling curtain spray device according to claim 3, characterized in that: The lower part of the water spray pipe has a positioning structure whose width gradually increases from bottom to top.

5. A rapid cooling curtain spray device according to claim 1, 2 or 3, characterized in that: The water spray pipe comprises two angle steels, one side of the two angle steels are connected to each other, and the water spray seam is formed between the other side of the two angle steels.

6. A rapid cooling curtain spray device according to claim 1, characterized in that: Support plates are provided below the left and right ends of the cover plate, and the water spray pipe is connected between the two support plates.

7. A rapid cooling curtain spray device according to claim 6, characterized in that: The support plate is connected with a water injection pipe at the opposite side of the place where the water spray pipe is connected, and an opening connecting the water spray pipe and the water injection pipe is provided on the support plate.

8. The rapid cooling curtain spray device according to claim 1, characterized in that: The water retaining part and the water guiding part have an arc-shaped flow guiding structure connected with each other.

9. The rapid cooling curtain spray device according to claim 1, characterized in that: The first direction and the second direction are perpendicular to each other.

10. The rapid cooling curtain spray device according to claim 1, characterized in that: The width of the water spraying slit is 1 mm.

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