A drying box

Abstract

The present invention discloses a drying box, comprising a box with a drying cavity, two air knives arranged in the box at intervals and dividing the drying cavity into an upper cavity, an interval cavity and a lower cavity, two material ports arranged on both sides of the box, a circulating fan arranged outside the box, two air inlets connected to the output end of the circulating fan and respectively connected to the upper cavity and the lower cavity, a return air duct connected to the input end of the circulating fan and connected to the lower cavity, a burner arranged outside the box, and a combustion cylinder connected to the burner and arranged in the lower cavity; the air knives are arranged with a plurality of air holes. The present invention realizes the method of heating by natural gas, reduces the drying cost of the plate and strip, avoids the loss of heat, improves the heating efficiency, and at the same time enables the entire drying box to form a hot air circulation drying method, further improving the heating efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of drying equipment, and in particular relates to a drying box. Background Art

[0002] A drying box is a box device used to dry wet items. It can adjust different temperatures according to the different materials of the items to avoid damaging the items to be dried by excessively high temperatures.

[0003] In the existing strip cleaning production line, the strip surface will have moisture after being cleaned by the water tank, so it needs to be heated and dried in a drying box. At present, most manufacturers use external fans for strip drying boxes, and then connect them through pipes to form a circulation heating. The heating method uses electric heaters, but the power of electric heaters is large and the energy consumption is too high. Correspondingly, the drying cost is increased, and the pipeline of the external fan is long, so the heat loss is large, resulting in low heating efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to provide a drying box to solve the problems of high drying cost and low heating efficiency caused by high heat loss in the existing plate and strip drying box.

[0005] In order to solve the above technical problems, the present invention provides a drying box, comprising a box body with a drying cavity, two air knives arranged in the box body at intervals and dividing the drying cavity into an upper cavity and a lower cavity, two material ports arranged on the corresponding sides of the box body, a circulating fan arranged outside the box body, two air inlets connected to the output end of the circulating fan and respectively connected to the upper cavity and the lower cavity, a return air duct connected to the input end of the circulating fan and connected to the lower cavity, a burner arranged outside the box body, and a combustion cylinder connected to the burner and arranged in the lower cavity; the interval area between the two air knives is a interval cavity, the two material ports correspond to the two ends of the interval cavity respectively, the air knife is penetrated with a plurality of air holes, and the plurality of air holes are arranged at intervals.

[0006] Preferably, the circulation fan is arranged on an outer wall of one side of the box body, and the return air duct is arranged on an inner wall of the box body.

[0007] Preferably, the return air duct includes two inner walls respectively arranged on two corresponding sides of the box body.

[0008] Preferably, the burner is arranged on an outer wall of one side of the box body, the combustion tube is arranged on an inner wall of one side of the box body, and the burner and the combustion tube are arranged on the same side of the box body.

[0009] Preferably, the combustion tube is also supported on the inner wall of the other side of the box body through a base.

[0010] Preferably, the output ends of the two air inlets correspond to the positions of the two wind knives respectively.

[0011] Preferably, the air inlet duct is provided with an adjusting air valve.

[0012] Preferably, the box body is a double-layer structure and is filled with fiber rock wool in the middle.

[0013] Preferably, the air holes are arranged in an array on the wind knife.

[0014] Preferably, the diameter of the air holes is 5 mm to 8 mm.

[0015] Compared with the prior art, the drying box in the present invention realizes heating by natural gas by adopting an external burner and a built-in combustion barrel, thereby avoiding the problem of excessively high drying costs caused by heating with an electric heater, thereby reducing the drying cost of the plate and strip. Moreover, since the combustion is carried out in the built-in combustion barrel, heat loss is avoided, and the heating efficiency is improved. Moreover, through the design of the circulating fan and the return air duct, the entire drying box forms a hot air circulation drying method, further improving the heating efficiency. At the same time, through the design of the wind knife, the upper and lower surfaces of the plate and strip can be heated and dried, and the wind force of the hot air blowing towards the plate and strip is improved, thereby improving the drying efficiency of the plate and strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention clearer, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 A schematic structural diagram of a drying box provided in an embodiment of the present invention.

[0018] Figure 2 A schematic diagram of the coordination structure between a first box body and an air knife in a drying box provided in an embodiment of the present invention.

[0019] Figure 3 A schematic diagram of the coordination structure between a second box body and an air knife in a drying box provided in an embodiment of the present invention.

[0020] Among them, 1. Box body; 10. Drying cavity; 11. Upper cavity; 12. Spacer cavity; 13. Lower cavity; 14. Material inlet; 2. Air knife; 20. Air vent; 21. Installation slot; 3. Circulation fan; 4. Air inlet duct; 5. Return air duct; 6. Burner; 7. Combustion tube; 70. Base; 8. Pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The embodiment of the present invention provides a drying box, combined with the attached Figure 1 To Attachment Figure 3 As shown, it includes a box body 1 with a drying cavity 10, two air knives 2 which are arranged at intervals in the box body 1 and divide the drying cavity 10 into an upper cavity 11 and a lower cavity 13, two material ports 14 which are arranged on the corresponding sides of the box body 1, a circulating fan 30 arranged outside the box body 1, two air inlet ducts 4 which are connected to the output end of the circulating fan 30 and respectively connect the upper cavity 11 and the lower cavity 13, a return air duct 5 which is connected to the input end of the circulating fan 30 and connects the lower cavity 13, a burner 6 arranged outside the box body 1, and a combustion tube 7 which is connected to the burner 6 and arranged in the lower cavity 13; the interval area between the two air knives 2 is a spacing cavity 12, the two material ports 14 correspond to the two ends of the spacing cavity 12 respectively, and the air knife 2 is penetrated with a plurality of air holes 20, and the plurality of air holes 20 are arranged at intervals.

[0023] Specifically, the box body 1 is a rectangular structure. Of course, according to actual needs, it can also be set to a trapezoid, a pentagon, etc.

[0024] Specifically, the box body 1 is a double-layer structure and is filled with fiber rock wool in the middle, which can improve the heat preservation effect of the box body 1 and prevent the heat from being lost too quickly.

[0025] Specifically, the spacing distance between the two wind knives 2 is set according to actual needs and is not limited here. Since the spacing area between the two wind knives 2 is a spacing cavity 12, one of the wind knives 2 cooperates with the corresponding inner wall part of the box body 1 to form an upper cavity 11, and the other wind knife 2 cooperates with the corresponding inner wall part of the box body 1 to form a lower cavity 13.

[0026] Specifically, a plurality of air holes 20 are arranged in a row on the wind knife 2. This arrangement allows the hot air in the air inlet duct 4 to be evenly blown into the surface of the strip to improve the drying efficiency.

[0027] Specifically, the spacing between the plurality of air holes 20 is set according to actual needs and is not limited here.

[0028] Specifically, the diameter of the air hole 20 is 5 mm to 8 mm, which can increase the wind force of the hot air blown into the surface of the plate strip to improve the drying efficiency. Of course, according to actual needs, the diameter of the air hole 20 can also be adjusted according to actual needs.

[0029] In order to increase the coverage area of ​​the hot air blowing onto the surface of the plate strip, the several air holes 20 on the wind knife 2 are arranged at an angle, that is, the depth direction of the air hole 20 forms an angle less than 90 with the wind knife 2, so that the hot air can be blown obliquely from the air hole 20 to the surface of the plate strip, thereby achieving the effect of increasing the coverage area of ​​the hot air blowing onto the surface of the plate strip.

[0030] Furthermore, the inclination direction of the air holes 20 in each row of air holes 20 is the same, and the inclination angle of the air holes 20 in each row of air holes 20 is also the same.

[0031] Furthermore, the inclination directions of the air holes 20 in two adjacent rows of air holes 20 are staggered, such as the inclination angle of the first row of air holes 20 is to the right, and the inclination angle of the second row of air holes 20 is to the left. In order to make the hot air blown to the surface of the plate strip uniform, the inclination angles of the air holes 20 in two adjacent rows of air holes 20 are also the same.

[0032] In order to make the hot air blown onto the surface of the plate strip more uniform, the inclination direction and inclination angle of the air holes 20 in the two alternate rows of air holes 20 are the same.

[0033] Specifically, the two material ports 14 are used for the entry and exit of the strip, respectively, to achieve continuous drying of the strip. In this embodiment, the height of the material port 14 is 70 mm to 90 mm. Of course, the height of the material port 14 can also be adaptively adjusted according to the thickness of the strip. The distance between the two sides of the material port 14 is determined according to the width of the strip, and is at least 10 mm greater than the width of the strip.

[0034] Specifically, the circulation fan 30 is arranged on the outer wall of one side of the box body 1, and the return air duct 5 is arranged on the inner wall of the box body 1. By arranging the circulation fan 30 close to the box body 1 and arranging the return air duct 5 on the inner wall of the box body 1, it is possible to avoid heat loss through the return air duct 5 when returning air, and at the same time, the pipe distance of the air inlet duct 4 can be shortened, thereby avoiding heat loss through the air inlet duct 4 to a certain extent.

[0035] Specifically, the air inlet 4 is provided with an adjusting air valve for adjusting the wind force and temperature of the air inlet 4 , so as to ensure that the temperature in the drying chamber 10 is uniform.

[0036] Specifically, the output ends of the two air inlets 4 correspond to the positions of the two air knives 2. In this way, the hot air output from the air inlet 4 can face the air knives 2, so that the hot air can be directly blown into the surface of the strip from the air holes 20 to improve the drying effect.

[0037] Specifically, the return air duct 5 includes two inner walls respectively arranged on the two sides corresponding to the box body 1. Of course, more return air ducts 5 can be arranged according to actual needs. This can improve the circulation efficiency and the drying effect.

[0038] Specifically, the burner 6 is arranged on the outer wall of one side of the box body 1, and the combustion tube 7 is arranged on the inner wall of one side of the box body 1, and the burner 6 and the combustion tube 7 are arranged on the same side of the box body 1. Among them, the burner 6 is a system for controlling the combustion of natural gas, and the combustion tube 7 is a combustion area of ​​natural gas, which can avoid being affected by the hot air circulation during combustion.

[0039] Furthermore, the burner 6 and the combustion tube 7 are arranged on the same side of the housing 1 .

[0040] Specifically, the combustion tube 7 is also supported on the inner wall of the other side of the box body 1 through a base 70. In this way, the combustion tube 7 can be better supported to prevent the combustion tube 7 from becoming loose.

[0041] By arranging the burner 6 and the combustion tube 7 on the same side of the housing 1, the pipeline arrangement between the two can be shortened, reducing heat loss to the outside, and at the same time, saving the installation cost of the pipeline.

[0042] In order to make the plate strip enter at an inclined angle to increase the wind-receiving area of ​​the plate strip and improve the drying efficiency, a mounting groove 21 can also be provided on the wind knife 2 located below. The mounting groove 21 is provided on the side of the wind knife 2 close to the partition cavity 12, so that when necessary, a pad 8 can be installed in the mounting groove 21 to make the plate strip enter at an inclined angle, wherein the end of the pad 8 away from the mounting groove 21 is an inclined plane, so that the plate strip placed on the pad 8 can enter at an inclined angle.

[0043] Specifically, the installation groove 21 extends from the position of one material opening 14 to the position of another material opening 14 , and can be disposed in any area of ​​the air knife 2 corresponding to the material opening 14 .

[0044] Furthermore, the installation groove 21 is arranged on one side or both sides of the material opening 14, so as to avoid blocking the air holes 20 on the air knife 2 after the cushion block 8 is installed.

[0045] Compared with the prior art, the drying box in this embodiment realizes heating by natural gas by adopting an external burner 6 and a built-in combustion tube 7, thereby avoiding the problem of excessively high drying costs caused by heating with an electric heater, thereby reducing the drying cost of the plate and strip. Moreover, since the combustion is carried out in the built-in combustion tube 7, heat loss is avoided, and the heating efficiency is improved. Moreover, through the design of the circulating fan 30 and the return air duct 5, the entire drying box forms a hot air circulation drying method, further improving the heating efficiency. At the same time, through the design of the wind knife 2, the upper and lower surfaces of the plate and strip can be heated and dried, and the wind force of the hot air blowing towards the plate and strip is improved, thereby improving the drying efficiency of the plate and strip.

[0046] The drying box in this embodiment can not only realize the above functions, but also has a firm structure, good sealing performance, energy saving and environmental protection.

[0047] The above embodiments are only examples for clearly explaining the present invention and are not intended to limit the implementation methods. The scope of the present invention includes but is not limited to the above embodiments, and any equivalent changes made to the shape and structure of the present invention are included in the protection scope of the present invention.

Claims

1. A drying box, characterized in that: It comprises a box body with a drying cavity, two air knives arranged in the box body at intervals and dividing the drying cavity into an upper cavity, a partition cavity and a lower cavity, two material ports arranged on both sides corresponding to the box body, a circulating fan arranged outside the box body, two air inlets connected to the output end of the circulating fan and respectively connected to the upper cavity and the lower cavity, a return air duct connected to the input end of the circulating fan and connected to the lower cavity, a burner arranged outside the box body, and a combustion cylinder connected to the burner and arranged in the lower cavity; the interval area between the two air knives is the partition cavity, the two material ports correspond to the two ends of the partition cavity respectively, the air knives are arranged with a plurality of air holes, and the plurality of air holes are arranged at intervals; Several air holes on the wind knife are arranged at an angle; a mounting groove is provided on the wind knife near the lower cavity, and the mounting groove is arranged on a side of the wind knife near the partition cavity, and the mounting groove runs through the position of one of the material ports to the position of the other material port, and the mounting groove is arranged on one side or both sides of the material port, and a pad is provided in the mounting groove, and the end of the pad away from the mounting groove is an inclined plane.

2. The drying box according to claim 1, characterized in that: The circulation fan is arranged on an outer wall of one side of the box body, and the return air duct is arranged on an inner wall of the box body.

3. The drying box according to claim 2, characterized in that: The return air duct includes two inner walls respectively arranged on two corresponding sides of the box body.

4. The drying box according to claim 1, characterized in that: The burner is arranged on the outer wall of one side of the box body, the combustion tube is arranged on the inner wall of one side of the box body, and the burner and the combustion tube are arranged on the same side of the box body.

5. The drying box according to claim 4, characterized in that: The combustion tube is also supported on the inner wall of the other side of the box body through a base.

6. The drying box according to claim 1, characterized in that: The output ends of the two air inlets correspond to the positions of the two wind knives respectively.

7. The drying box according to claim 1, characterized in that: The air inlet duct is provided with an adjusting air valve.

8. The drying box according to claim 1, characterized in that: The box body is a double-layer structure and is filled with fiber rock wool in the middle.

9. The drying box according to claim 1, characterized in that: The air holes are arranged in an array on the wind knife.

10. The drying box according to claim 9, characterized in that: The diameter of the air vent is 5 mm to 8 mm.

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