A heat treatment rapid cooling device

Abstract

This utility model provides a rapid cooling device for heat treatment, including an air supply mechanism, an air conveying mechanism, and a spray pipe. The spray pipe includes an air distribution pipe and nozzles arranged on the air distribution pipe, with multiple nozzles evenly spaced along the length of the air distribution pipe. The air conveying mechanism includes a first pipe and a second pipe. The air supply mechanism is connected to a first end of the air distribution pipe through the first pipe and to a second end of the air distribution pipe through the second pipe. Through the above improvements, this application allows external air to enter simultaneously from both ends of the air distribution pipe, thereby equalizing the pressure at both ends and balancing the air pressure inside the air distribution pipe. This ensures that the air volume sprayed by each nozzle on the air distribution pipe is essentially equal, resulting in a consistent cooling effect on the steel plate along the length of the air distribution pipe and preventing deformation of the steel plate during cooling.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment for steel plates, and specifically to a rapid cooling device for heat treatment. Background Technology

[0002] In existing steel plate tempering heat treatment, the cooling methods after tempering mainly include air cooling, oil cooling, water cooling, air cooling, and isothermal cooling. In the current plate production process, if some plates are cooled by oil or water, the cooling rate is too fast, which can easily lead to cracking. Moreover, the oil or water cooling process is relatively complex and the cooling cost is high. While air cooling can ensure that the plate does not crack, the cooling rate is slow and the efficiency is low. Air cooling can improve the cooling rate and reduce the cracking of the plate to a certain extent.

[0003] Existing air-cooling equipment uses a fan to directly blow air onto the sheet material for cooling, or it uses openings in the pipes to blow air onto the sheet material for cooling. The fan is usually connected to one end of the pipe. This structure results in a larger airflow on the side closer to the fan and a smaller airflow on the side farther from the fan. Consequently, the sheet material near the fan cools faster and the sheet material farther from the fan cools slower. Due to the thermal expansion and contraction of the sheet material, the side that cools faster contracts faster and the side that cools slower contracts slower. This causes the sheet material to deform after air cooling, resulting in warping and an increased failure rate in sheet material inspection.

[0004] In summary, there is an urgent need for a rapid cooling device for heat treatment to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a rapid cooling device for heat treatment, which aims to solve the problem that existing sheet metal is prone to deformation and warping during the cooling process after tempering. The specific technical solution is as follows:

[0006] A heat treatment rapid cooling device includes an air supply mechanism, an air conveying mechanism, and a jet pipe; the jet pipe includes an air distribution pipe and nozzles arranged on the air distribution pipe, with multiple nozzles arranged at equal intervals along the length of the air distribution pipe; the air conveying mechanism includes a first pipe and a second pipe, the air supply mechanism is connected to the first end of the air distribution pipe through the first pipe, and the air supply mechanism is connected to the second end of the air distribution pipe through the second pipe.

[0007] Furthermore, the cross-sectional area of ​​the air distribution pipe in the same blowpipe is greater than or equal to the sum of the cross-sectional areas of all nozzles on the same blowpipe.

[0008] Furthermore, multiple nozzles are arranged in two rows, with the two rows of nozzles facing each other and distributed downwards in a V-shape.

[0009] Furthermore, it also includes a first common rail pipe and a second common rail pipe. The first common rail pipe is arranged at the end of the first pipeline away from the air supply mechanism and is connected to the first pipeline. The second common rail pipe is arranged at the end of the second pipeline away from the air supply mechanism and is connected to the second pipeline. Multiple blow pipes are arranged, and the multiple blow pipes are arranged at equal intervals along the length direction of the first common rail pipe.

[0010] Furthermore, the air supply mechanism also includes two corrugated pipes. One corrugated pipe has its first end connected to the first pipe and its second end connected to the air outlet of the air supply mechanism. The other corrugated pipe has its first end connected to the second pipe and its second end connected to the air outlet of the air supply mechanism.

[0011] Furthermore, two sets of air supply and air transmission mechanisms are arranged. One set of air supply mechanisms is connected to the middle of the first common rail pipe through its corresponding air supply mechanism, and the other set of air supply mechanisms is connected to the upstream end of the first common rail pipe through its corresponding air supply mechanism. The flow cross-sectional area of ​​the first common rail pipe is smaller than the sum of the flow cross-sectional areas of all the air distribution pipes connected to the first common rail pipe, forming a strong cooling zone, a medium cooling zone, and a weak cooling zone along the length of the first common rail pipe.

[0012] Furthermore, it also includes a third pipe and a third common rail pipe. The third common rail pipe is connected to the output end of the air supply mechanism through the third pipe. A blow pipe is also installed on the third common rail pipe. The middle part of the third common rail pipe and the blow pipe are connected. The blow pipe on the third common rail pipe is arranged below the blow pipe connected to the first common rail pipe, and the blow pipe connected to the third common rail pipe is arranged with the blow direction facing upward, forming a cooling area above the blow pipe connected to the third common rail pipe.

[0013] Furthermore, the air supply mechanism includes a blower, the outlet of which is connected to both the inlet of the first pipe and the inlet of the second pipe.

[0014] Furthermore, the air supply mechanism also includes a filter element, which is installed at the air inlet end of the blower.

[0015] Furthermore, the filter element is a filter screen.

[0016] The application of the technical solution of this utility model has the following beneficial effects:

[0017] By improving the system, external air enters simultaneously from both ends of the air distribution duct, thereby equalizing the pressure at both ends of the duct and balancing the air pressure inside. This ensures that the air volume emitted by each nozzle on the air distribution duct is basically equal, resulting in a consistent cooling effect on the steel plate along the length of the air distribution duct and preventing deformation of the steel plate during the cooling process.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. These will be described below with reference to... Figures 1-6 The present invention will be described in further detail below. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a side view of the overall structure of a heat treatment rapid cooling device according to this application;

[0021] Figure 2 This is a partially enlarged view of the blow pipe in a heat treatment rapid cooling device according to this application;

[0022] Figure 3 This is a top view of the overall structure of a heat treatment rapid cooling device.

[0023] Figure 4 yes Figure 3 Enlarged view at point A in the middle;

[0024] Figure 5 yes Figure 3 A cross-sectional view along the AA direction;

[0025] Figure 6 yes Figure 5 A magnified view of point B in the middle.

[0026] Among them, 1. Air supply mechanism; 11. Blower; 12. Filter element; 2. Air conveying mechanism; 21. First pipe; 22. Second pipe; 23. Corrugated pipe; 3. Spray pipe; 31. Air distribution pipe; 32. Nozzle; 4. First common rail pipe; 5. Second common rail pipe; 6. Third pipe; 7. Third common rail pipe; 8. Cooling zone; 91. Strong cooling zone; 92. Medium cooling zone; 93. Weak cooling zone. Detailed Implementation

[0027] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Example:

[0030] See Figures 1-6 This embodiment provides a heat treatment rapid cooling device, including an air supply mechanism 1, an air conveying mechanism 2, and a spray pipe 3; the spray pipe 3 includes an air distribution pipe 31 and nozzles 32 arranged on the air distribution pipe 31, with multiple nozzles 32 arranged at equal intervals along the length of the air distribution pipe 31; the air conveying mechanism 2 includes a first pipe 21 and a second pipe 22, the air supply mechanism 1 is connected to the first end of the air distribution pipe 31 through the first pipe 21, and the air supply mechanism 1 is connected to the second end of the air distribution pipe 31 through the second pipe 22.

[0031] After studying and analyzing the existing design, it was found that the existing design introduces air from one end of the air distribution duct 31. After the gas enters the air distribution duct 31, it moves towards the other end of the air distribution duct 31. During the movement of the gas in the air distribution duct 31, the gas pressure continuously decreases, resulting in a large air volume at the nozzle 32 near the air inlet end of the air distribution duct 31 and a small air volume at the nozzle 32 far from the air inlet end of the air distribution duct 31. As a result, when cooling the steel plate, the cooling rate is faster at the position near the air inlet end of the air distribution duct 31 and slower at the position far from the air inlet end of the air distribution duct 31, which leads to deformation of the steel plate.

[0032] It can be seen that through the above improvements, external air enters from both ends of the air distribution duct 31 simultaneously, thereby making the pressure at both ends of the air distribution duct 31 equal, achieving the effect of balancing the air pressure inside the air distribution duct 31, and thus making the air volume sprayed by each nozzle 32 on the air distribution duct 31 basically equal, so that the cooling effect of the nozzle 32 on the steel plate along the length of the air distribution duct 31 is consistent, preventing the steel plate from deforming during the cooling process.

[0033] Furthermore, the cross-sectional area of ​​the air distribution pipe 31 in the same blowpipe 3 is greater than or equal to the sum of the cross-sectional areas of the air distribution pipe 32 of all nozzles on the same blowpipe 3.

[0034] It is known that when the cross-sectional area of ​​the air distribution duct 31 is equal to the sum of the cross-sectional areas of all the nozzles 32 on the blow pipe 3, the air in the air distribution duct 31 can just supply all the nozzles 32, so that the air pressure at the end near the air inlet of the air distribution duct 31 is basically equal to that at the middle part of the air distribution duct 31 away from the air inlet of the air distribution duct 31. This makes the air volume of the nozzles 32 near the air inlet of the air distribution duct 31 basically equal to that of the nozzles 32 away from the air inlet of the air distribution duct 31, thereby ensuring the uniformity of cooling of the steel plate and preventing the steel plate from deforming and cracking. When the cross-sectional area of ​​the air distribution duct 31 is greater than the sum of the cross-sectional areas of all the nozzles 32 on the blow pipe 3, the air volume of the air distribution duct 31 is sufficient to supply the air volume of all the nozzles 32, so that the air pressure at the end near the air inlet of the air distribution duct 31 is equal to that at the middle part of the air distribution duct 31 away from the air inlet of the air distribution duct 31, so that the air volume sprayed by each nozzle 32 is equal, and the cooled steel plate is prevented from deforming.

[0035] Furthermore, the multiple nozzles 32 are arranged in two rows, with the two rows of nozzles 32 arranged opposite each other and distributed downwards in a V-shape. In some embodiments, the two rows of nozzles 32 can also be arranged in an alternating manner to further improve the uniformity of airflow from the entire device.

[0036] It is known that by spraying air towards the steel plate to be cooled through two rows of nozzles 32 arranged in a V-shape, it is possible to increase the number of nozzles 32 on the air distribution pipe 31 and facilitate the orderly arrangement of the nozzles 32 on the air distribution pipe 31. By increasing the number of nozzles 32, more gas is sprayed at the same time, thereby improving the cooling effect on the steel plate.

[0037] Furthermore, it also includes a first common rail pipe 4 and a second common rail pipe 5. The first common rail pipe 4 is arranged at the end of the first pipe 21 away from the air supply mechanism 1, and the first common rail pipe 4 is connected to the first pipe 21. The second common rail pipe 5 is arranged at the end of the second pipe 22 away from the air supply mechanism 1, and the second common rail pipe 5 is connected to the second pipe 22. Multiple blow pipes 3 are arranged, and the multiple blow pipes 3 are arranged at equal intervals along the length direction of the first common rail pipe 4.

[0038] It should be noted that the first common rail pipe 4 and the second common rail pipe 5 are arranged along the steel plate conveying direction.

[0039] It is known that by setting the first common rail pipe 4 and the second common rail pipe 5, the gas transported by the first pipe 21 and the second pipe 22 can be connected to multiple injection pipes 3 at the same time. That is, the first common rail pipe 4 and the second common rail pipe 5 are connected to multiple injection pipes 3 at the same time, and the multiple injection pipes 3 are arranged at intervals along the cooling direction of the steel plate.

[0040] Furthermore, the air supply mechanism 2 also includes a corrugated pipe 23, with two corrugated pipes 23 arranged. The first end of one corrugated pipe 23 is connected to the first pipe 21, and the second end of the corrugated pipe 23 is connected to the air outlet of the air supply mechanism 1. The first end of the other corrugated pipe 23 is connected to the second pipe 22, and the second end of the corrugated pipe 23 is connected to the air outlet of the air supply mechanism 1.

[0041] It is known that the corrugated pipe 23 has a certain deformation capacity. During installation, there is a certain deviation between the air inlet of the first pipe 21 and the air outlet of the air supply mechanism 1. The corrugated pipe 23 can effectively compensate for this positional deviation, thus facilitating the connection between the first pipe 21 and the air outlet of the air supply mechanism 1. Similarly, the corrugated pipe 23 also facilitates the connection between the second pipe 22 and the air outlet of the air supply mechanism 1. It should be noted that the air supply mechanism 1 has at least multiple air outlets, and the first pipe 21 and the second pipe 22 are respectively connected to different air outlets of the air supply mechanism 1 through the corrugated pipe 23.

[0042] Furthermore, two sets of air conveying mechanism 2 and air supply mechanism 1 are arranged. Specifically, the two sets of air conveying mechanism 2 and air supply mechanism 1 are arranged along the conveying direction of the steel plate, that is, along the length direction of the first common rail pipe 4. One set of air supply mechanism 1 is connected to the middle of the first common rail pipe 4 through its corresponding air conveying mechanism 2, and the other set of air supply mechanism 1 is connected to the upstream end of the first common rail pipe 4 through its corresponding air conveying mechanism 2. The flow cross-sectional area of ​​the first common rail pipe 4 is smaller than the sum of the flow cross-sectional areas of all the air distribution pipes 31 connected to the first common rail pipe 4, forming a strong cooling zone 91, a medium cooling zone 92 and a weak cooling zone 93 along the length direction of the first common rail pipe 4.

[0043] It is known that because the cross-sectional area of ​​the first common rail pipe 4 is smaller than the sum of the cross-sectional areas of all the air distribution pipes 31 connected to the first common rail pipe 4, the air pressure decreases as the air flows within the first common rail pipe 4. That is, the air pressure is high at the connection between the first pipe 21 and the first common rail pipe 4, and the air pressure decreases as it extends further away from the connection between the first pipe 21 and the first common rail pipe 4. By setting the air supply mechanism 1 and the air conveying mechanism 2 in the middle and upstream of the first common rail pipe 4, the first common rail pipe 4 is formed into a high-pressure area, a medium-pressure area, and a low-pressure area from upstream to downstream. In the high-pressure area, the gas pressure in the air distribution pipe 31 is basically equal to the gas pressure in the first pipe 21, and the gas pressure is relatively high, so the nozzle 32 sprays more gas. In the low-pressure area, the gas pressure in the air distribution pipe 31 is lower than that in the medium-pressure area and the high-pressure area, so the nozzle 32 sprays less gas than in the medium-pressure area and the high-pressure area. This creates a strong cooling zone 91, a medium cooling zone 92, and a weak cooling zone 93 along the length of the first common rail pipe 4. The strong cooling zone 91 corresponds to the high air pressure area, the medium cooling zone 92 corresponds to the medium air pressure area, and the weak cooling zone 93 corresponds to the low air pressure area. The steel plate passes through the strong cooling zone 91, the medium cooling zone 92, and the weak cooling zone 93 sequentially, thereby increasing the cooling rate of the steel plate.

[0044] Furthermore, it also includes a third pipe 6 and a third common rail pipe 7. The third common rail pipe 7 is connected to the output end of the air supply mechanism 1 through the third pipe 6. A blow pipe 3 is also provided on the third common rail pipe 7. The middle part of the third common rail pipe 7 and the blow pipe 3 are connected. The blow pipe 3 on the third common rail pipe 7 is arranged below the blow pipe 3 connected to the first common rail pipe 4, and the blow direction of the blow pipe 3 connected to the third common rail pipe 7 is arranged upward, forming a cooling area 8 above the blow pipe 3 connected to the third common rail pipe 7.

[0045] It can be seen that by arranging cooling structures on both the upper and lower sides of the steel plate being cooled, the cooling speed of the steel plate is increased simultaneously, which is beneficial to improving the production efficiency of the steel plate. It should be noted that the third common rail pipe 7 is arranged parallel to the first common rail pipe 4, and the third common rail pipe 7 is connected to the middle of the air distribution pipe 31 in the blow pipe 3. This arrangement can reduce the volume, so as to facilitate the installation of the third common rail pipe 7 and the corresponding blow pipe 3.

[0046] Furthermore, the air supply mechanism 1 includes a blower 11, the air outlet of which is connected to both the air inlet of the first pipe 21 and the air inlet of the second pipe 22.

[0047] It is known that air is supplied by blower 11, and when blower 11 is working, it simultaneously forces the outside air into the first pipe 21 and the second pipe 22.

[0048] Furthermore, the air supply mechanism 1 also includes a filter element 12, which is installed at the air inlet end of the blower 11.

[0049] It is understood that by setting the filter element 12, the gas entering the blower 11 is filtered to prevent large impurities in the gas from entering the blower 11 and causing damage to the blower 11 or clogging of the nozzles 32 on the air distribution pipe 31.

[0050] Furthermore, the filter element 12 is a filter screen, which is detachably connected to the air inlet of the blower 11 by screws to protect the air inlet of the blower 11.

[0051] It is understood that the filter allows outside air to be smoothly drawn into the blower 11, while preventing large impurities from entering through the air inlet of the blower 11 and damaging it, or causing blockage of the nozzles 32 on the air distribution duct 31. Additionally, it prevents people from putting their hands into the blower 11, thus improving safety.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rapid cooling device for heat treatment, characterized in that: It includes an air supply mechanism (1), an air delivery mechanism (2), and a blow pipe (3); The blow pipe (3) includes an air distribution pipe (31) and nozzles (32) arranged on the air distribution pipe (31). Multiple nozzles (32) are arranged and are evenly distributed along the length of the air distribution pipe (31). The air supply mechanism (2) includes a first pipe (21) and a second pipe (22). The air supply mechanism (1) is connected to the first end of the air distribution pipe (31) through the first pipe (21) and the second end of the air distribution pipe (31) through the second pipe (22).

2. The rapid cooling device for heat treatment according to claim 1, characterized in that: The cross-sectional area of ​​the air distribution pipe (31) in the same blow pipe (3) is greater than or equal to the sum of the cross-sectional areas of all nozzles (32) on the same blow pipe (3).

3. The rapid cooling device for heat treatment according to claim 1, characterized in that: The multiple nozzles (32) are arranged in two rows, with the two rows of nozzles (32) arranged opposite each other and the two rows of nozzles (32) distributed in a V-shape with the nozzles (32) facing downwards.

4. The rapid cooling device for heat treatment according to claim 1, characterized in that: It also includes a first common rail pipe (4) and a second common rail pipe (5), wherein the first common rail pipe (4) is arranged at the end of the first pipe (21) away from the air supply mechanism (1), and the first common rail pipe (4) is connected to the first pipe (21); The second common rail pipe (5) is arranged at one end of the second pipe (22) away from the air supply mechanism (1), and the second common rail pipe (5) is connected to the second pipe (22); Multiple blowpipes (3) are arranged, and the multiple blowpipes (3) are arranged at equal intervals along the length direction of the first common rail pipe (4).

5. A rapid cooling device for heat treatment according to any one of claims 1-4, characterized in that: The air supply mechanism (2) also includes a corrugated pipe (23), two corrugated pipes (23) are arranged, one of which has its first end connected to the first pipe (21) and its second end connected to the air outlet of the air supply mechanism (1); the other corrugated pipe (23) has its first end connected to the second pipe (22) and its second end connected to the air outlet of the air supply mechanism (1).

6. The rapid cooling device for heat treatment according to claim 4, characterized in that: The air supply mechanism (2) and the air supply mechanism (1) are arranged in two sets. One set of the air supply mechanism (1) is connected to the middle of the first common rail pipe (4) through the corresponding air supply mechanism (2), and the other set of the air supply mechanism (1) is connected to the upstream end of the first common rail pipe (4) through the corresponding air supply mechanism (2). The flow cross-sectional area of ​​the first common rail pipe (4) is smaller than the sum of the flow cross-sectional areas of all the air distribution pipes (31) connected to the first common rail pipe (4), forming a strong cooling zone (91), a medium cooling zone (92) and a weak cooling zone (93) along the length of the first common rail pipe (4).

7. The rapid cooling device for heat treatment according to claim 4, characterized in that: It also includes a third pipe (6) and a third common rail pipe (7). The third common rail pipe (7) is connected to the output end of the air supply mechanism (1) through the third pipe (6). A blow pipe (3) is also provided on the third common rail pipe (7). The third common rail pipe (7) is connected to the middle part of the blow pipe (3). The spray pipe (3) on the third common rail (7) is arranged below the spray pipe (3) connected to the first common rail (4), and the spray pipe (3) connected to the third common rail (7) is arranged with the spray direction facing upward, forming a cooling area (8) above the spray pipe (3) connected to the third common rail (7).

8. A rapid cooling device for heat treatment according to any one of claims 1-4, characterized in that: The air supply mechanism (1) includes a blower (11), the air outlet of which is connected to both the air inlet of the first pipe (21) and the air inlet of the second pipe (22).

9. A rapid cooling device for heat treatment according to claim 8, characterized in that: The air supply mechanism (1) also includes a filter element (12), which is installed at the air inlet end of the blower (11).

10. A rapid cooling device for heat treatment according to claim 9, characterized in that: The filter element (12) is a filter screen.

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