An adjustable continuous cooling air duct device

Abstract

The present invention relates to an adjustable continuous cooling air duct device, characterized in that: it comprises two air ducts with air outlets facing each other, that is, the air outlets of the first air duct and the second air duct are arranged facing each other to form a counter-blowing air duct structure; a first air knife structure is arranged in the first air duct, and a second air knife structure is arranged in the second air duct; the first air knife structure has a plurality of adjustable air jets, which are connected with the air outlet of the first air duct to form a first adjustable air jet structure; the second air knife structure has a plurality of adjustable air jets, which are connected with the air outlet of the second air duct to form a second adjustable air jet structure; the first adjustable air jet structure and the second adjustable air jet structure are located on two sides of the workpiece running channel, so that the cold air blows to the two sides of the workpiece, forming a cooling structure symmetrical from top to bottom or symmetrical from left to right. It has the characteristics of reasonable structure, high adjustment accuracy, strong blowing pressure and good cooling quality.

Description

Technical Field

[0001] The present invention relates to a cooling air duct device, in particular to an adjustable continuous cooling air duct device, which is suitable for annealing cold-rolled steel strips and belongs to the technical field of metal heat treatment equipment. Technical Background

[0002] In the prior art of cold-rolled steel strip annealing, three structural forms are generally used to adjust the air volume of the cold air system: (1) The frequency converter is used to adjust the wind speed and air volume of the fan. This is to use the frequency converter to adjust the fan flow, but it can only change the wind pressure and flow size of the air duct as a whole. There are problems such as the inability to adjust the local cooling air volume, the inability to meet the local process requirements of the workpiece, and the overall reduction of cooling capacity. (2) The valve throttling method is used to adjust the air volume of the air duct, which has problems such as low adjustment accuracy and low blowing pressure. (3) The guide plate method is used to adjust the air volume of the air duct, which has problems such as fixed duct blowing volume, inability to adjust according to needs, narrow application range and poor cooling quality. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of the cold-rolled steel strip annealing structure in the prior art, such as the inability to adjust the local cooling air volume, the inability to meet the local process requirements of the workpiece or the low adjustment accuracy, the low blowing pressure or the inability to adjust according to needs, the narrow scope of application and the poor cooling quality. An adjustable continuous cooling air duct device is provided, which has outstanding substantial characteristics and significant progress, such as reasonable structure, adjustable local cooling air volume, the ability to meet the local process requirements of the workpiece, high adjustment accuracy, strong blowing pressure and good cooling quality.

[0004] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] A kind of adjustable continuous cooling air duct device, its structural characteristics are: it includes two air ducts with air outlets facing each other, that is, the air outlets of air duct one and air duct two are arranged facing each other to form a counter-blowing air duct structure; a first wind knife structure is provided in air duct one, and a second wind knife structure is provided in air duct two; the first wind knife structure has a plurality of adjustable air jets, and the adjustable air jets are connected with the air outlet of air duct one to form a first adjustable air jet structure; the second wind knife structure has a plurality of adjustable air jets, and the adjustable air jets are connected with the air outlet of air duct two to form a second adjustable air jet structure; the first adjustable air jet structure and the second adjustable air jet structure are located on two sides of the workpiece running channel so that the cold air is blown to two sides of the workpiece to form a cooling structure which is symmetrical from top to bottom or symmetrical from left to right.

[0006] The purpose of the present invention can also be achieved by adopting the following technical solutions:

[0007] Furthermore, the first wind knife structure and the second wind knife structure have the same structure, thereby forming an adjustable air spray structure with air outlets symmetrically arranged facing each other. The adjustable air spray outlets of the first wind knife structure and the second wind knife structure are strip-shaped, resembling a number of adjustable air spray "knives", constituting an adjustable air spray structure.

[0008] Furthermore, each adjustable wind "knife" is formed by welding steel plates, and gaps are reserved in the steel plate welding to form air outlets; all the adjustable wind "knives" of the first wind knife structure 3 and the second wind knife structure are connected into a whole through slides, and the slides are provided with four or more to divide the air duct into three equal parts of left, middle and right or more equal parts; for the left, middle and right three-part structure, an adjustment structure consisting of a left adjustment plate, a middle adjustment plate, a right adjustment plate and a pull rod is provided to adjust the size of the air outlet of the adjustable wind "knife".

[0009] Furthermore, for the structure divided into three equal parts: left, middle and right, oblique grooves are respectively opened in the left adjustment plate, the middle adjustment plate and the right adjustment plate, the left oblique groove in the left adjustment plate is inclined to the right, the right oblique groove in the right adjustment plate is inclined to the left, and the middle oblique groove in the middle adjustment plate is in a "Λ" shape, with the middle arched and the two sides inclined downward; the left adjustment plate, the middle adjustment plate and the right adjustment plate are each connected to a pull rod, and the left adjustment plate, the middle adjustment plate and the right adjustment plate are pulled by the pull rod to move so that the left oblique groove, the middle oblique groove and the right oblique groove are in contact with the air outlet of the adjustable wind "knife", forming an adjustment structure for adjusting the size of the air outlet of the adjustable wind "knife".

[0010] Furthermore, the pull rod is connected to an electric drive structure, which electrically controls the pull rod to pull the left adjustment plate, the middle adjustment plate and the right adjustment plate to move so that the left oblique groove, the middle oblique groove and the right oblique groove contact the air outlet of the adjustable wind "knife", thereby forming an electric adjustment structure for adjusting the air outlet size of the adjustable wind "knife".

[0011] The present invention has the following outstanding substantive features and significant technical advances:

[0012] 1. The present invention comprises two air ducts with air outlets facing each other, that is, the air outlets of the first air duct and the second air duct are arranged facing each other to form a counter-blowing air duct structure; a first wind knife structure is arranged in the first air duct, and a second wind knife structure is arranged in the second air duct; the first wind knife structure has a plurality of adjustable air jets, which are connected to the air outlet of the first air duct to form a first adjustable air jet structure; the second wind knife structure has a plurality of adjustable air jets, which are connected to the air outlet of the second air duct to form a second adjustable air jet structure; the first adjustable air jet structure and the second The adjustable air spray structure is located on both sides of the workpiece running channel so that the cold air blows to both sides of the workpiece, forming a cooling structure that is symmetrical up and down or left and right; therefore, it can solve the problems of the cold-rolled steel strip annealing structure in the prior art, such as the inability to adjust the local cooling air volume, the inability to meet the local process requirements of the workpiece or the low adjustment accuracy, the low blowing pressure or the inability to adjust according to needs, the narrow scope of application and the poor cooling quality. It has outstanding substantial characteristics and significant progress such as reasonable structure, adjustable local cooling air volume, the ability to meet the local process requirements of the workpiece, high adjustment accuracy, strong blowing pressure and good cooling quality.

[0013] 2. The present invention realizes the cooling amount of the left and right sides of the air duct by changing the position of the adjustable air knife. The adjustable air knife realizes the cooling amount of the air knife by changing the size of the nozzle. It can directly adjust the cooling capacity of the nozzle of the air duct, and has the characteristics of diversified cooling adjustment methods and a combination of multiple cooling methods.

[0014] 3. The present invention has a simple adjustment method. The purpose of adjusting the blowing volume can be achieved by pulling and inserting the positions of the left, middle and right adjustment plates, thereby adjusting the cooling volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of specific embodiment 1 of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the adjustable air knife structure involved in specific embodiment 1 of the present invention.

[0017] Figure 3-1 for Figure 2 Schematic diagram of the structure of the left adjustment plate involved.

[0018] Figure 3-2 for Figure 2 Schematic diagram of the structure of the middle adjustment plate involved.

[0019] Figure 3-3 for Figure 2 Schematic diagram of the structure of the right adjustment plate involved.

[0020] Figure 4 Schematic diagram of the change in overlapping area between the inclined slots and the air outlets of the left, middle and right adjustment plates.

[0021] Figure 5 The diagram is a structural diagram of an adjustable air knife structure in which the left, middle and right adjustment plates are adjusted to the lower stroke positions respectively.

[0022] Figure 6 for Figure 5 Usage effect diagram.

[0023] Figure 7 The diagram is a structural diagram of an adjustable air knife structure in which the left, middle and right adjustment plates are adjusted to the upper stroke positions respectively.

[0024] Figure 8 for Figure 7 Usage effect diagram.

[0025] Fig. 9 The diagram is a structural diagram of the adjustable air knife structure when the left and right adjustment plates are adjusted to the upper stroke positions and the middle adjustment plate is adjusted to the lower stroke position.

[0026] Fig.10 for Fig. 9 Usage effect diagram.

[0027] Fig.11 The diagram is a structural diagram of the adjustable air knife structure when the left and right adjustment plates are adjusted to the lower stroke positions respectively and the middle adjustment plate is adjusted to the upper stroke position.

[0028] Fig.12 for Fig.11 Usage effect diagram.

[0029] Fig.13 The diagram is a structural diagram of the adjustable air knife structure when the left and middle adjustment plates are adjusted to the lower stroke positions, and the right adjustment plate is adjusted to the upper stroke position.

[0030] Fig.14 for Fig.13 Usage effect diagram.

[0031] Fig.15 The diagram is a structural diagram of the adjustable air knife structure when the middle and right adjustment plates are adjusted to the lower stroke positions and the left adjustment plate is adjusted to the upper stroke position.

[0032] Fig.16 for Fig.15 Usage effect diagram. DETAILED DESCRIPTION Specific embodiment 1

[0034] Reference Figure 1 , Figure 2 , Figure 3-1 to Figure 3-3, a specific embodiment 1 of the present invention includes two air ducts with air outlets facing each other, that is, the air outlets of air duct one 1 and air duct two 2 are arranged facing each other to form a counter-blowing air duct structure; a first wind knife structure 3 is provided in air duct one 1, and a second wind knife structure 4 is provided in air duct two 2; the first wind knife structure 3 has a plurality of adjustable air jets, which are connected to the air outlet of air duct one 1 to form a first adjustable air jet structure; the second wind knife structure 4 has a plurality of adjustable air jets, which are connected to the air outlet of air duct two 2 to form a second adjustable air jet structure; the first adjustable air jet structure and the second adjustable air jet structure are located on two sides of the workpiece running channel so that the cold air blows to both sides of the workpiece to form a cooling structure that is symmetrical from top to bottom or symmetrical from left to right.

[0035] In this embodiment:

[0036] The first wind knife structure 3 and the second wind knife structure 4 have the same structure, thereby forming an adjustable air spray structure with air outlets symmetrically arranged facing each other. The adjustable air spray outlets of the first wind knife structure 3 and the second wind knife structure 4 are strip-shaped, resembling a number of adjustable air spray "knives", constituting an adjustable air spray structure.

[0037] Each adjustable wind "knife" is formed by welding steel plates, and gaps are reserved in the steel plate welding to form air outlets; all the adjustable wind "knives" of the first wind knife structure 3 and the second wind knife structure 4 are connected into a whole through a slide 5, and the slide 5 is provided with four or more than four to divide the air duct into three equal parts: left, middle and right; for the left, middle and right three-part structure, an adjustment structure consisting of a left adjustment plate 6, a middle adjustment plate 7, a right adjustment plate 8 and a pull rod 9 is provided to adjust the size of the air outlet of the adjustable wind "knife".

[0038] The present embodiment implements a structure divided into three equal parts: left, middle and right. Oblique grooves are respectively opened in the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8. The left oblique groove 6-1 in the left adjustment plate 6 is inclined to the right, the right oblique groove 8-1 in the right adjustment plate 8 is inclined to the left, and the middle oblique groove 7-1 in the middle adjustment plate 7 is in a "Λ" shape, with the middle arched and the two sides inclined downward; the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8 are each connected to a pull rod 9, and the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8 are pulled by the pull rod 9 to move so that the left oblique groove 6-1, the middle oblique groove 7-1 and the right oblique groove 8-1 are in contact with the air outlet of the adjustable wind "knife", forming an adjustment structure for adjusting the air outlet size of the adjustable wind "knife".

[0039] The pull rod 9 is connected to an electric drive structure, which electrically controls the pull rod 9 to pull the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8 to move so that the left oblique groove 6-1, the middle oblique groove 7-1 and the right oblique groove 8-1 are in contact with the air outlet of the adjustable wind "knife", forming an electric adjustment structure for adjusting the air outlet size of the adjustable wind "knife".

[0040] The working principle of this embodiment is described in detail below:

[0041] Reference Figure 1 , Figure 2 , Figure 3-1 to Figure 3-3 In the practical application of the specific embodiment 1 of the present invention, the first air duct 1 and the second air duct 2 are arranged in an upper and lower structure, that is, an upper air duct 1 and a lower air duct 2 are formed; the gaps between the left adjustment plate 6 and the middle adjustment plate 7, and between the middle adjustment plate 7 and the right adjustment plate 8 form an air jet, which has a plurality of adjustable air jets and a strip-shaped air jet structure. The plate strip (workpiece) passes between the upper air duct 1 and the lower air duct 2, and the plate strip is cooled by spraying low-temperature gas through the air duct blowing port.

[0042] Reference Figure 4 The left adjusting plate 6, the middle adjusting plate 7, and the right adjusting plate 8 are respectively provided with oblique grooves. By pulling the pull rod 9, the overlapping area of ​​the oblique grooves of the left adjusting plate 6, the middle adjusting plate 7, and the right adjusting plate 8 and the blowing port (such as Figure 4 The shaded part shown) changes to achieve the adjustment effect.

[0043] The gas flow rate of the blowing port is Q=S*V, where: Q is the flow rate, S is the cross-sectional area of ​​the blowing port, and V is the flow velocity.

[0044] From the formula, we can easily see that the flow rate is directly proportional to the cross-sectional area of ​​the nozzle. When the pressure provided by our fan remains unchanged and the flow velocity V remains unchanged, the larger the nozzle area, the larger the cooling gas blown out, that is, the greater the cooling capacity, and vice versa.

[0045] Reference Figure 5 , Figure 6 , the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8 are adjusted to the lower stroke position respectively, and the inclined opening of the adjustment plate completely overlaps with the blowing port (such as Figure 5 ), the cooling capacity of the nozzle is the largest (such as Figure 6 ).

[0046] Reference Figure 7 , Figure 8 , the left adjustment plate 6, the middle adjustment plate 7 and the right adjustment plate 8 are adjusted to the upper stroke position respectively, and the bevel of the adjustment plate and the blowing port do not overlap at all (such as Figure 7 ), the cooling capacity of the nozzle is the smallest (such as Figure 8 ).

[0047] Reference Fig. 9 , Fig.10 , the left adjustment plate 6 and the right adjustment plate 8 are adjusted to the upper stroke position, and the middle adjustment plate 7 is adjusted to the lower stroke position. The oblique openings of the left adjustment plate 6 and the right adjustment plate 8 do not overlap with the blowing port at all, and the oblique opening of the middle adjustment plate 7 completely overlaps with the blowing port (such as Fig. 9), the cooling capacity of the nozzle is large in the middle and small on both sides (such as Fig.10 ).

[0048] Reference Fig.11 , Fig.12 , the left adjustment plate 6 and the right adjustment plate 8 are adjusted to the lower stroke position, and the middle adjustment plate 7 is adjusted to the upper stroke position. The oblique openings of the left adjustment plate 6 and the right adjustment plate 8 completely overlap with the blowing port, and the oblique opening of the middle adjustment plate 7 does not overlap with the blowing port at all (such as Fig.11 ), the cooling capacity of the nozzle is small in the middle and large on both sides (such as Fig.12 ).

[0049] Reference Fig.13 , Fig.14 , the left adjustment plate 6 and the middle adjustment plate 7 are adjusted to the lower stroke position, and the right adjustment plate 8 is adjusted to the upper stroke position. The oblique openings of the left adjustment plate 6 and the middle adjustment plate 7 completely overlap with the blowing port, and the oblique opening of the right adjustment plate 8 does not overlap with the blowing port at all (such as Fig.13 ), the cooling capacity of the nozzle is larger on the left and smaller on the right (such as Fig.14 ).

[0050] Reference Fig.15 , Fig.16 , the right adjustment plate 8 and the middle adjustment plate 7 are adjusted to the lower stroke position, and the left adjustment plate 6 is adjusted to the upper stroke position. The oblique openings of the right adjustment plate 8 and the middle adjustment plate 7 completely overlap with the blowing port, and the oblique opening of the left adjustment plate 6 does not overlap with the blowing port at all (such as Fig.15 ), the cooling capacity of the nozzle is smaller on the left and larger on the right (such as Fig.16 ).

[0051] By changing the position of the adjustable wind knife structure, the cooling amount of the left and right sides of the air duct can be adjusted; the principle of the adjustable wind knife structure is to adjust the cooling amount of the wind knife by changing the size of the blowing port. The adjustable wind knife structure is made of steel plates, and the gaps reserved between the steel plates are used as the blowing ports; the steel plates are welded into an I-shaped shape to make the slideway 5. The pull rod 9 can be extended to the outside of the air duct and adjusted by an external adjustment mechanism.

[0052] This embodiment can solve the following technical problems:

[0053] 1. Directly adjust the cooling amount of the air duct nozzle;

[0054] 2. Adjust the cooling capacity of the local part of the air duct and independently adjust the local cooling amount without affecting the cooling capacity of other positions;

[0055] 3. Especially when used in the cooling of ultra-thin and ultra-wide plates and strips, this device can solve the problem of surface deformation caused by cooling problems. Specific embodiment 2:

[0057] The characteristics of the specific embodiment 2 of the present invention are: the slideway 5 is provided with five, six or more than six sections to divide the air duct into four, five or six equal parts, or more equal parts; in addition to the left adjustment plate and the right adjustment plate, two, three or more than four intermediate adjustment plates and the pull rod 9 are provided to form an adjustment structure to adjust the size of the air outlet of the adjustable wind "knife". The rest is the same as the specific embodiment 1.

Claims

1. An adjustable continuous cooling air duct device, characterized in that: The invention comprises two air ducts with air outlets facing each other, namely, the air outlets of the first air duct (1) and the second air duct (2) are arranged facing each other to form a counter-blowing air duct structure; a first air knife structure (3) is arranged in the first air duct (1), and a second air knife structure (4) is arranged in the second air duct (2); the first air knife structure (3) has a plurality of adjustable air jets, which are connected to the air outlet of the first air duct (1) to form a first adjustable air jet structure; the second air knife structure (4) has a plurality of adjustable air jets, which are connected to the air outlet of the second air duct (2) to form a second adjustable air jet structure; the first adjustable air jet structure and the second adjustable air jet structure are located on two sides of the workpiece running channel so that the cold air is blown to two sides of the workpiece to form a cooling structure which is symmetrical from top to bottom or symmetrical from left to right; Each adjustable wind "knife" is formed by welding steel plates, and a gap is reserved in the steel plate welding to form an air outlet; all the adjustable wind "knifes" of the first wind knife structure (3) and the second wind knife structure (4) are connected as a whole through a slideway (5), and the slideway (5) is provided with four or more to divide the air duct into three equal parts, namely, left, middle and right, or more; for the structure of the left, middle and right three equal parts, an adjustment structure consisting of a left adjustment plate (6), a middle adjustment plate (7), a right adjustment plate (8) and a pull rod (9) is provided to adjust the size of the air outlet of the adjustable wind "knife"; For the structure divided into three equal parts, namely, left, middle and right, inclined grooves are respectively provided in the left adjustment plate (6), the middle adjustment plate (7) and the right adjustment plate (8); the left inclined groove (6-1) in the left adjustment plate (6) is inclined to the right, the right inclined groove (8-1) in the right adjustment plate (8) is inclined to the left, and the middle inclined groove (7-1) in the middle adjustment plate (7) is in a "Λ" shape, with the middle part upwardly arched and both sides inclined downwardly; the left adjustment plate (6), the middle adjustment plate (7) and the right adjustment plate (8) are each connected to a pull rod (9); the pull rod (9) is used to pull the left adjustment plate (6), the middle adjustment plate (7) and the right adjustment plate (8) to move so that the left inclined groove (6-1), the middle inclined groove (7-1) and the right inclined groove (8-1) are in contact with the air outlet of the adjustable wind "knife", thereby forming an adjustment structure for adjusting the air outlet size of the adjustable wind "knife".

2. The adjustable continuous cooling air duct device according to claim 1, characterized in that: The first wind knife structure (3) and the second wind knife structure (4) have the same structure, thereby forming an adjustable air spray structure with air outlets symmetrically arranged facing each other. The adjustable air spray outlets of the first wind knife structure (3) and the second wind knife structure (4) are strip-shaped, resembling a number of adjustable air spray "knives", forming an adjustable air spray structure.

3. An adjustable continuous cooling air duct device according to claim 1 or 2, characterized in that: The pull rod (9) is connected to an electric drive structure, and the pull rod (9) is electrically controlled to pull the left adjustment plate (6), the middle adjustment plate (7) and the right adjustment plate (8) to move so that the left inclined groove (6-1), the middle inclined groove (7-1) and the right inclined groove (8-1) are in contact with the air outlet of the adjustable wind "knife", thereby forming an adjustment structure for electrically adjusting the air outlet size of the adjustable wind "knife".

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