Strip steel cooling system

Abstract

The invention belongs to the technical field of metal material machining, and relates to a strip steel cooling system which comprises a coating liquid spraying assembly, a cooling assembly and a cooling assembly. The coating liquid spraying assembly is arranged right above the strip steel; the air blowing cooling assembly is used for discharging hot air on the surface of the strip steel; the air blowing cooling assembly is arranged right above the strip steel; the circulating spraying assembly is used for blowing cold air to the surface of the strip steel; the circulating injection assembly is arranged right above the strip steel; the spray cooling assembly is used for spraying water to the surface of the strip steel; and the spray cooling assembly is arranged right above the strip steel. According to the strip steel cooling system, crystallization of coating liquid of a coating roller of a silicon steel continuous annealing unit is eliminated, unqualified strip steel coatings are avoided, and the operation stability of the continuous annealing unit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material processing, and particularly relates to a strip cooling system. Background Art

[0002] With the annual increase in the production capacity of non-oriented electrical steel in China, the supply of electrical steel in the market exceeds the demand, and the competition is becoming increasingly fierce. The quality problems of electrical steel mainly include dimensions, performance, and surface, among which the quality problem of the surface coating is particularly important.

[0003] During the production process of the silicon steel continuous annealing unit, as the grade increases, the process furnace temperature required in the furnace area becomes higher and higher. Especially when the strip width and thickness are relatively large, the strip temperature is relatively high when it exits the annealing furnace, resulting in easy crystallization of the coating liquid on the coating roller. The crystallization products block the grooves of the coating roller, and color differences appear on the roller surface. Coating defects such as coating texture and coating color difference appear on the strip surface; the coating data on the strip surface fluctuates, resulting in non-compliance of the surface coating thickness index, forcing unplanned replacement of the coating machine, increasing the grinding cost of the coating roller and abnormal consumption of coating liquid auxiliary materials, and bringing great negative impacts to the quality and output of the continuous annealing unit. Therefore, improvement is needed. Summary of the Invention

[0004] In view of this, the present invention provides a strip cooling system.

[0005] Specifically, the present invention is realized through the following technical solutions:

[0006] According to the first aspect of the present invention, a strip cooling system is provided, including:

[0007] A coating liquid spraying assembly for spraying coating liquid onto the surface of the strip; the coating liquid spraying assembly is arranged directly above the strip;

[0008] A blowing cooling assembly for discharging the hot air on the surface of the strip; the blowing cooling assembly is arranged directly above the strip;

[0009] A circulating spraying assembly for blowing cold air onto the surface of the strip; the circulating spraying assembly is arranged directly above the strip;

[0010] A spraying cooling assembly for spraying water onto the surface of the strip; the spraying cooling assembly is arranged directly above the strip.

[0011] Optionally, the blowing cooling assembly includes: a cooling pipe and a motor. Among them, the cooling pipe is arranged adjacent to the strip, the motor is arranged on the cooling pipe, the cooling pipe has an air suction port and an air outlet, the air suction port is close to the strip, and the motor drives the hot air extracted at the air suction port to be discharged through the air outlet.

[0012] Optionally, the blowing and cooling assembly further includes: a control valve disposed on the cooling pipe for controlling the opening degree of the cooling pipe.

[0013] Optionally, the circulating spray assembly includes: a circulating pipe, a heat exchanger, and a circulating motor. The circulating pipe is disposed adjacent to the strip. The circulating motor and the heat exchanger are disposed on the circulating pipe. The circulating pipe has a blowing port. The circulating motor extracts hot air through the blowing port and transports it to the heat exchanger. The heat exchanger cools the hot air into cold air, and the circulating motor drives the cold air to be discharged through the blowing port.

[0014] Optionally, the spray cooling assembly includes: a water spray beam and a circulating pump. The water spray beam is arranged directly above the strip, and the circulating pump is disposed on the water spray beam. The circulating pump extracts external water and sprays it onto the surface of the strip through the water spray beam.

[0015] Optionally, the coating liquid spraying assembly includes: a coating liquid supply pipe, a coating liquid circulating pump, and a coating liquid spray beam. The coating liquid spray beam is arranged directly above the strip. The coating liquid supply pipe is connected to the coating liquid spray beam. The coating liquid circulating pump is disposed on the coating liquid supply pipe. The coating liquid circulating pump extracts external coating liquid and transports it to the coating liquid spray beam through the coating liquid supply pipe and sprays it onto the surface of the strip.

[0016] Optionally, the coating liquid spraying assembly further includes: a coating liquid collecting tank arranged directly below the strip and directly below the coating liquid spray beam.

[0017] Optionally, the coating liquid spraying assembly further includes: a coating liquid circulating tank connected to the coating liquid supply pipe and the coating liquid collecting tank respectively.

[0018] Optionally, the coating liquid spraying assembly further includes: a coating liquid recovery pipe connecting the coating liquid circulating tank and the coating liquid collecting tank respectively.

[0019] Optionally, the coating liquid spraying assembly further includes: a coating roll clamped to the strip. When the downstream direction is the movement direction of the strip, the coating roll is located downstream of the coating liquid spray beam.

[0020] The technical solution provided by the present invention at least brings the following beneficial effects:

[0021] A strip cooling system provided by the present application eliminates the generation of crystallization of the coating liquid on the coating roll of the silicon steel continuous annealing unit, avoids the generation of unqualified strip coatings, and improves the operation stability of the continuous annealing unit. Description of the Drawings

[0022] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments in accordance with the present invention, and are used together with the specification to explain the principles of the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments or the description of related technologies. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of a coating liquid spraying component in a strip cooling system provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a blowing cooling component in a strip cooling system provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of a circulating spraying component in a strip cooling system provided by an embodiment of the present invention;

[0027] Figure 4 It is a schematic structural diagram of a spray cooling component in a strip cooling system provided by an embodiment of the present invention. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] Referring to Figures 1-4 As shown, the present application provides a strip 100 cooling system, including:

[0030] A coating liquid spraying component 10 for spraying a coating liquid onto the surface of the strip 100; the coating liquid spraying component 10 is arranged directly above the strip 100;

[0031] A blowing cooling component 20 for discharging the hot air on the surface of the strip 100; the blowing cooling component 20 is arranged directly above the strip 100;

[0032] A circulating spraying component 30 for blowing cold air onto the surface of the strip 100; the circulating spraying component 30 is arranged directly above the strip 100;

[0033] The spray cooling assembly 40 is used to spray water onto the surface of the strip 100; the spray cooling assembly 40 is arranged directly above the strip 100.

[0034] In the embodiment of the present application, the coating liquid spraying assembly 10 sprays the coating liquid onto the surface of the strip 100, the blowing and cooling assembly 20 is used to discharge the hot air on the surface of the strip 100, the circulating spraying assembly 30 blows cold air onto the surface of the strip 100, and the spray cooling assembly 40 sprays water onto the surface of the strip 100.

[0035] Exemplarily, the blowing and cooling assembly 20 includes: a cooling pipe 21 and a motor 22. Among them, the cooling pipe 21 is arranged adjacent to the strip 100, the motor 22 is arranged on the cooling pipe 21, the cooling pipe 21 has an air suction port 211 and an air outlet 212, the air suction port 211 is close to the strip 100, and the motor 22 drives the hot air extracted at the air suction port 211 to be discharged through the air outlet 212.

[0036] In the embodiment of the present application, a lot of hot air is generated around the strip 100 during the production process. The hot air is drawn into the cooling pipe 21 by the motor 22 through the air suction port 211 and then discharged through the air outlet 212.

[0037] Exemplarily, the blowing and cooling assembly 20 further includes: a control valve 23. The control valve 23 is arranged on the cooling pipe 21, and the control valve 23 is used to control the opening degree of the cooling pipe 21.

[0038] In the embodiment of the present application, the control valve 23 can control the opening degree of the cooling pipe 21, thereby controlling the intensity of the hot air extraction by the cooling pipe 21 and changing the cooling effect on the strip 100.

[0039] Exemplarily, the circulating spraying assembly 30 includes: a circulating pipe 31, a heat exchanger 32 and a circulating motor 33. Among them, the circulating pipe 31 is arranged adjacent to the strip 100, the circulating motor 33 and the heat exchanger 32 are arranged on the circulating pipe 31, the circulating pipe 31 has a blowing port 34, the circulating motor 33 extracts the hot air through the blowing port 34 and transports it to the heat exchanger 32, the heat exchanger 32 cools the hot air into cold air, and the circulating motor 33 drives the cold air to be discharged through the blowing port 34.

[0040] In the embodiment of the present application, the circulating motor 33 extracts the hot air at the strip 100 to the heat exchanger 32 through the blowing port 34. The heat exchanger 32 cools the hot air into cold air through the heat exchange operation of water and then discharges it to the strip 100 through the blowing port 34.

[0041] Exemplarily, the spray cooling assembly 40 includes: a water spray beam 41 and a circulation pump 42. Among them, the water spray beam 41 is arranged directly above the strip 100, the circulation pump 42 is arranged on the water spray beam 41, and the circulation pump 42 extracts external water and sprays it onto the surface of the strip 100 via the water spray beam 41.

[0042] In the embodiment of the present application, the circulation pump 42 extracts external water and transports it into the water spray beam 41, and the water spray beam 41 sprays the water onto the surface of the strip 100.

[0043] Exemplarily, the coating liquid spraying assembly 10 includes: a coating liquid supply pipeline 11, a coating liquid circulation pump 12, and a coating liquid spray beam 13. Among them, the coating liquid spray beam 13 is arranged directly above the strip 100, the coating liquid supply pipeline 11 is connected to the coating liquid spray beam 13, the coating liquid circulation pump 12 is arranged on the coating liquid supply pipeline 11, and the coating liquid circulation pump 12 extracts external coating liquid and transports it into the coating liquid spray beam 13 via the coating liquid supply pipeline 11 and sprays it onto the surface of the strip 100.

[0044] In the embodiment of the present application, the coating liquid circulation pump 12 extracts external coating liquid and transports it into the coating liquid spray beam 13 via the coating liquid supply pipeline 11, and the coating liquid spray beam 13 sprays the coating liquid onto the surface of the strip 100.

[0045] Exemplarily, the coating liquid spraying assembly 10 further includes: a coating liquid collection tank 14. The coating liquid collection tank 14 is arranged directly below the strip 100 and directly below the coating liquid spray beam 13.

[0046] In the embodiment of the present application, the coating liquid on the surface of the strip 100 drips downward under the action of gravity into the coating liquid collection tank 14 and is collected and converged.

[0047] Exemplarily, the coating liquid spraying assembly 10 further includes: a coating liquid circulation tank 15. The coating liquid circulation tank 15 is respectively connected to the coating liquid supply pipeline 11 and the coating liquid collection tank 14.

[0048] In the embodiment of the present application, the coating liquid circulation tank 15 is used to receive the coating liquid in the coating liquid collection tank 14 and transport it to the coating liquid supply pipeline 11 for recycling the coating liquid.

[0049] Exemplarily, the coating liquid spraying assembly 10 further includes: a coating liquid recovery pipeline 16. The coating liquid recovery pipeline 16 is respectively connected to the coating liquid circulation tank 15 and the coating liquid collection tank 14.

[0050] In the embodiment of the present application, the coating liquid recovery pipeline 16 is used to connect the coating liquid circulation tank 15 and the coating liquid collection tank 14.

[0051] Exemplarily, the coating liquid spraying assembly 10 further includes: a coating roll 17, the coating roll 17 is clamped and arranged on the strip steel 100, and when the downstream direction is the moving direction of the strip steel 100, the coating roll 17 is located downstream of the coating liquid spraying beam 13.

[0052] In the embodiment of the present application, after the strip steel 100 receives the coating liquid sprayed by the coating liquid spraying beam 13 on its surface, the coating roll 17 squeezes the coating liquid and evenly applies it on the surface of the strip steel 100, which can eliminate the generation of crystallization of the coating liquid on the coating roll 17 of the silicon steel continuous annealing unit.

[0053] A strip steel 100 cooling system provided by the present application eliminates the generation of crystallization of the coating liquid on the coating roll 17 of the silicon steel continuous annealing unit, avoids the generation of unqualified coatings on the strip steel 100, and improves the operation stability of the continuous annealing unit.

[0054] It should be noted that in the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0055] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0056] In addition, the terms "installed", "set", "provided with", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0057] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0058] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A strip cooling system, characterized in that: include: A coating liquid spraying assembly is used to spray the coating liquid onto the surface of the strip; The coating liquid spraying assembly is arranged directly above the steel strip; An air blowing cooling component is used to discharge the hot air on the surface of the steel strip; the air blowing cooling component is arranged directly above the steel strip; A circulating injection assembly, used for blowing cold air to the surface of the steel strip; The circulating injection assembly is arranged directly above the strip steel; A spray cooling component is used for spraying water onto the surface of the steel strip; the spray cooling component is arranged directly above the steel strip.

2. The strip cooling system according to claim 1, characterized in that: The air blowing cooling assembly includes: a cooling pipe and a motor, wherein the cooling pipe is arranged adjacent to the strip steel, the motor is arranged on the cooling pipe, the cooling pipe has an air suction port and an air outlet, the air suction port is close to the strip steel, and the motor drives the hot air extracted at the air suction port to be discharged through the air outlet.

3. The strip cooling system according to claim 2, characterized in that: The air blowing cooling assembly further includes: a control valve, which is arranged on the cooling pipe and is used to control the opening of the cooling pipe.

4. The strip cooling system according to claim 1, characterized in that: The circulating injection assembly includes: a circulating pipe, a heat exchanger and a circulating motor, wherein the circulating pipe is arranged adjacent to the steel strip, the circulating motor and the heat exchanger are arranged on the circulating pipe, the circulating pipe has an air blowing port, the circulating motor extracts hot air through the air blowing port and transports it to the heat exchanger, the heat exchanger cools the hot air into cold air, and the circulating motor drives the cold air to be discharged through the air blowing port.

5. The strip cooling system according to claim 1, characterized in that: The spray cooling assembly includes: a water spray beam and a circulation pump, wherein the water spray beam is arranged directly above the strip steel, and the circulation pump is arranged on the water spray beam. The circulation pump draws external water and sprays it onto the surface of the strip steel through the water spray beam.

6. The strip cooling system according to claim 1, characterized in that: The coating liquid spraying assembly includes: a coating liquid supply pipeline, a coating liquid circulation pump and a coating liquid spray beam, wherein the coating liquid spray beam is arranged directly above the strip steel, the coating liquid supply pipeline is connected to the coating liquid spray beam, the coating liquid circulation pump is arranged on the coating liquid supply pipeline, the coating liquid circulation pump draws external coating liquid and transports it to the coating liquid spray beam through the coating liquid supply pipeline and sprays it onto the surface of the strip steel.

7. The strip cooling system according to claim 6, characterized in that: The coating liquid spraying assembly further includes: a coating liquid collecting tank, which is arranged directly below the steel strip and located directly below the coating liquid spraying beam.

8. The strip cooling system according to claim 7, characterized in that: The coating liquid spraying assembly further comprises: a coating liquid circulation tank, and the coating liquid circulation tank is respectively connected to the coating liquid supply pipeline and the coating liquid collecting tank.

9. The strip cooling system according to claim 8, characterized in that: The coating liquid spraying assembly further comprises: a coating liquid recovery pipeline, wherein the coating liquid recovery pipeline is respectively connected to the coating liquid circulation tank and the coating liquid collecting tank.

10. The strip cooling system according to claim 6, characterized in that: The coating liquid spraying assembly further comprises: a coating roller, which is arranged to clamp the steel strip, and when the moving direction of the steel strip is taken as the downstream direction, the coating roller is located in the downstream direction of the coating liquid spraying beam.

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