Drying box

Abstract

The utility model relates to the technical field of drying equipment, in particular to a drying box which comprises a box body and a plurality of material conveying rollers, a drying cavity is formed in the box body, a feeding port and a discharging port are formed in the two ends of the drying cavity respectively, the material conveying rollers are arranged in the drying cavity at intervals in the direction from the feeding port to the discharging port, and the drying box further comprises a heating mechanism. The heating mechanism comprises an upper wind scooper, a lower wind scooper, a heat source and a fan, the upper wind scooper and the lower wind scooper are arranged in the drying cavity and oppositely arranged on the upper side and the lower side of the material conveying roller correspondingly, and the heat source is arranged at the input end of the upper wind scooper and the input end of the lower wind scooper; the fan conveys heat generated by the heat source into the upper wind scooper and the lower wind scooper through airflow. The drying box can blow hot air to the upper surfaces and the lower surfaces of products on the material conveying rollers at the same time, so that the products are heated more evenly, deformation caused by local heating is avoided, drying is more efficient, water vapor generated during drying can be taken away by airflow, and the water vapor is prevented from being condensed on the surfaces of the products again.

Description

Technical Field

[0001] The utility model relates to the technical field of drying devices, in particular to a drying box. Background Art

[0002] During the manufacturing process, metal sheets or strips often need to be cleaned before leaving the factory. After cleaning, moisture will remain on the surface of the product. In order to prevent rust and corrosion, the metal sheets or strips often need to be dried after cleaning to remove water stains on the surface of the product and facilitate subsequent processing of the product.

[0003] Existing drying equipment usually uses electric heating tubes to generate heat radiation to dry metal plates (strips). During the drying process, the electric heating tubes are mostly concentrated on the top of the product for drying, and the heat distribution is not uniform, resulting in low drying efficiency for die-castings, causing increased production costs. In addition, heating is concentrated on the upper surface of the plate (strip), which will cause the metal plate (strip) to be locally heated and deformed, resulting in the need to reshape the metal plate (strip) later, affecting the overall processing efficiency and increasing costs.

[0004] The technical problem to be solved by the present application is: how to solve the problems of low drying efficiency of existing metal plates (strips), uneven heating that easily leads to product deformation, etc. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a drying box, which can heat and dry the upper and lower surfaces of metal plates (strips) at the same time, improve the drying efficiency, and reduce the probability of product deformation.

[0006] The technical solution adopted by the utility model is: a drying box, including a box body and a plurality of conveying rollers, a drying chamber is arranged inside the box body, and a feed port and a discharge port are arranged at two ends of the drying chamber respectively, and each conveying roller is arranged inside the drying chamber at intervals along the direction from the feed port to the discharge port, and also includes a heating mechanism;

[0007] The heating mechanism includes an upper air duct, a lower air duct, a heat source and a fan. The upper air duct and the lower air duct are built in the drying chamber, and the upper air duct and the lower air duct are respectively arranged on the upper and lower sides of the material transfer roller. The heat source is arranged at the input end of the upper air duct and the lower air duct, and the fan sends the heat generated by the heat source to the upper air duct and the lower air duct through the airflow.

[0008] The drying box of the present application utilizes the heat generated by the heat source to convert the airflow generated by the fan into hot air. The hot air enters the upper air guide hood and the lower air guide hood respectively under the continuous blowing of the fan. The upper air guide hood and the lower air guide hood respectively blow hot air to the upper and lower surfaces of the product to be dried on the transfer roller at the same time, so that the product to be dried is heated more evenly and deformation due to local heating is avoided. At the same time, the drying efficiency is more efficient than the single-sided heating effect of the electric heating tube, and the water vapor generated by the drying will be carried away by the airflow to avoid the water vapor from re-condensing on the surface of the product to be dried.

[0009] In some embodiments, an upper air guide plate is provided on one side of the upper air guide cover close to the material transfer roller, and a plurality of upper air outlet slits are provided at intervals on the upper air guide plate;

[0010] A lower air guide plate is arranged on one side of the lower air guide cover close to the material transfer roller, and a plurality of lower air outlet slits are arranged at intervals on the lower air guide plate.

[0011] By adopting the above technical solution, the upper air outlet slits and the lower air outlet slits make the wind force more concentrated, so that the hot air can be blown to the surface of the product to be dried at high speed, accelerating the evaporation of water and improving the drying efficiency.

[0012] In some embodiments, the length extension direction of the upper air outlet slit and the lower air outlet slit is perpendicular to the conveying direction of the transfer roller.

[0013] By adopting the above technical solution, when the product to be dried moves along the material transfer roller, it is ensured that the hot air can cover the upper and lower surfaces of the product to be dried.

[0014] In some embodiments, a plurality of upper air guide fins are provided on a side of the upper air guide plate away from the material transfer roller, each upper air outlet slit corresponds to two upper air guide fins, and the distance between the two upper air guide fins corresponding to each upper air outlet slit gradually increases from an end close to the material transfer roller to an end away from the material transfer roller;

[0015] A plurality of lower air guide fins are arranged on the side of the lower air guide plate away from the material transfer roller, each lower air outlet slit corresponds to two lower air guide fins, and the distance between the two lower air guide fins corresponding to each lower air outlet slit gradually increases from the end close to the material transfer roller to the end away from the material transfer roller.

[0016] By adopting the above technical solution, the upper air guide fins can guide the hot air into the upper air outlet slits, and similarly, the lower air guide fins can guide the hot air into the lower air outlet slits.

[0017] In some embodiments, the height of the upper air guide cover gradually decreases from the side close to the heat source to the side far away from the heat source;

[0018] The height of the lower air guide cover gradually decreases from the side close to the heat source to the side far away from the heat source.

[0019] By adopting the above technical solution, it can be ensured that a certain wind pressure can be maintained at the end of the upper air guide cover and the lower air guide cover away from the input end, so that the products to be dried are heated more evenly.

[0020] In some embodiments, the heating mechanism further includes a circulation pipe, the heat source is arranged at the air outlet end of the fan, one end of the circulation pipe is connected to the top of the box, and the other end is connected to the air inlet end of the fan.

[0021] By adopting the above technical solution, the airflow with waste heat in the drying chamber can be sent back to the air inlet end of the fan, and then reheated by the heat source, that is, the waste heat is fully utilized, which is more energy-saving and environmentally friendly. Moreover, the air will rise when heated, so most of the preheating after drying is concentrated on the top of the drying chamber. Connecting the circulation pipe to the top of the box can better recover the waste heat.

[0022] In some embodiments, the heating mechanism further includes a diverter hood having an air inlet and two air outlets, the air inlet of the diverter hood being connected to a heat source, and the two air outlets of the diverter hood being connected to input ends of an upper air guide hood and a lower air guide hood, respectively.

[0023] By adopting the above technical solution, it is convenient to divide the hot air into the upper air guide cover and the lower air guide cover.

[0024] In some embodiments, the heating mechanism further comprises an air collecting hood, one end of which is connected to a side of the heat source away from the diverter hood, and the other end of which is connected to an air outlet end of the fan.

[0025] By adopting the above technical solution, the wind collecting hood can better connect the fan with the heat source.

[0026] In some embodiments, the heat source is a heater or a heat exchanger.

[0027] By adopting the above technical solution, the heater itself can be directly used as a heat source according to needs, or the heat energy generated in the production process can be used through a heat exchanger, which is more energy-saving and environmentally friendly. The heater and heat exchanger can also be combined as a heat source according to needs to make the heat supply more stable.

[0028] In some embodiments, a feed guide roller and a discharge guide roller are further provided on the box body. The feed guide roller is arranged at the feed port of the drying chamber, and the discharge guide roller is arranged at the discharge port of the drying chamber.

[0029] By adopting the above technical solution, the feed guide roller and the discharge guide roller can facilitate the connection of the drying box of the present application to the production line to achieve online drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of a drying box in a preferred embodiment of the utility model;

[0031] Figure 2 for Figure 1 Another perspective structural schematic diagram of the drying box shown;

[0032] Figure 3 for Figure 1 The cross-sectional structure diagram of the drying box along the AA line is shown;

[0033] Figure 4 for Figure 1 The cross-sectional structure diagram of the drying box along line BB is shown;

[0034] In the figure: 100, drying box; 10, box body; 11, drying chamber; 12, material transfer roller; 13, feed guide roller; 14, discharge guide roller; 20, heating mechanism; 21, upper air guide hood; 211, upper air guide plate; 212, upper air outlet slit; 213, upper air guide fin; 22, lower air guide hood; 221, lower air guide plate; 222, lower air outlet slit; 223, lower air guide fin; 23, heat source; 24, fan; 25, circulation pipe; 26, diverter hood; 27, air collecting hood. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] See also Figure 1 and Figure 4 , which is a drying box 100 of a preferred embodiment of the utility model, includes a box body 10 and a plurality of material transfer rollers 12. A drying chamber 11 is provided inside the box body 10, and a feed port and a discharge port are respectively provided at both ends of the drying chamber 11. Each material transfer roller 12 is arranged inside the drying chamber 11 at intervals along the direction from the feed port to the discharge port, and also includes a heating mechanism 20; the heating mechanism 20 includes an upper air duct 21, a lower air duct 22, a heat source 23 and a fan 24. The upper air duct 21 and the lower air duct 22 are built in the drying chamber 11, and the upper air duct 21 and the lower air duct 22 are respectively arranged on the upper and lower sides of the material transfer roller 12, the heat source 23 is arranged at the input end of the upper air duct 21 and the lower air duct 22, and the fan 24 sends the heat generated by the heat source 23 to the upper air duct 21 and the lower air duct 22 through airflow.

[0039] Optionally, the number of feed rollers 12 can be increased or decreased according to actual needs. There is no specific restriction on the number of feed rollers 12 herein, and the spacing between the feed rollers 12 can also be adjusted according to actual needs.

[0040] Preferably, in order to prevent heat from escaping through the feed port and the discharge port of the drying chamber 11, thereby causing energy waste, the sizes of the feed port and the discharge port of the drying chamber 11 should be the minimum size that meets the requirements of the products to be dried entering and exiting the drying chamber 11. Movable baffles can also be installed at the feed port and the discharge port of the drying chamber 11.

[0041] In order to prevent heat from being transferred to the outside through the side of the box body 10 and reduce heat loss to the outside, the side wall of the box body 10 is provided with a heat insulation layer.

[0042] like Figure 4 As shown, an upper air guide plate 211 is provided on the side of the upper air guide cover 21 close to the material transfer roller 12, and a plurality of upper air outlet slits 212 are provided on the upper air guide plate 211 at intervals; similarly, a lower air guide plate 221 is provided on the side of the lower air guide cover 22 close to the material transfer roller 12, and a plurality of lower air outlet slits 222 are provided on the lower air guide plate 221 at intervals. The upper air outlet slits 212 and the lower air outlet slits 222 can make the wind force more concentrated, so that the hot air can be blown to the surface of the product to be dried at a high speed, accelerate the evaporation of water, and improve the drying efficiency.

[0043] Preferably, the length extension direction of the upper air outlet slit 212 and the lower air outlet slit 222 is perpendicular to the conveying direction of the conveying roller 12. This design can ensure that the hot air can cover the upper and lower surfaces of the product to be dried when the product to be dried moves along the conveying roller 12, thereby ensuring the drying effect and improving the drying efficiency.

[0044] Furthermore, a plurality of upper air guide fins 213 are provided on the side of the upper air guide plate 211 away from the material transfer roller 12, each upper air outlet slit 212 corresponds to two upper air guide fins 213, and the distance between the two upper air guide fins 213 corresponding to each upper air outlet slit 212 gradually increases from the end close to the material transfer roller 12 to the end away from the material transfer roller 12; similarly, a plurality of lower air guide fins 223 are provided on the side of the lower air guide plate 221 away from the material transfer roller 12, each lower air outlet slit 222 corresponds to two lower air guide fins 223, and the distance between the two lower air guide fins 223 corresponding to each lower air outlet slit 222 gradually increases from the end close to the material transfer roller 12 to the end away from the material transfer roller 12.

[0045] like Figure 3 As shown, the height of the upper air guide 21 gradually decreases from the side close to the heat source 23 to the side far from the heat source 23; similarly, the height of the lower air guide 22 gradually decreases from the side close to the heat source 23 to the side far from the heat source 23. In this way, it can be ensured that a certain wind pressure can be maintained at the end of the upper air guide 21 and the lower air guide 22 away from the input end, so that the product to be dried is heated more evenly.

[0046] like Figure 1 and Figure 2 As shown, the heating mechanism 20 further includes a circulation pipe 25, and the heat source 23 is arranged at the air outlet end of the fan 24. One end of the circulation pipe 25 is connected to the top of the box 10, and the other end is connected to the air inlet end of the fan 24. The airflow with residual heat in the drying chamber 11 can be sent back to the air inlet end of the fan 24, and then reheated by the heat source 23, that is, the residual heat is fully utilized, which is more energy-saving and environmentally friendly. Moreover, the air will rise when heated, so most of the preheating after drying is concentrated on the top of the drying chamber 11. Connecting the circulation pipe 25 to the top of the box 10 can better recover the residual heat.

[0047] In this embodiment, the heating mechanism 20 further includes a flow divider 26, which is provided with an air inlet and two air outlets. The air inlet of the flow divider 26 is connected to the heat source 23, and the two air outlets of the flow divider 26 are respectively connected to the input ends of the upper air guide 21 and the lower air guide 22. The flow divider 26 facilitates the hot air to be diverted to the upper air guide 21 and the lower air guide 22.

[0048] Furthermore, the heating mechanism 20 further includes an air collecting hood 27, one end of which is connected to the side of the heat source 23 away from the diverter hood 26, and the other end of which is connected to the air outlet of the fan 24. The air collecting hood 27 can better connect the fan 24 with the heat source 23.

[0049] Optionally, the heat source 23 is a heater or a heat exchanger. The heater itself can be directly heated as the heat source 23 according to the needs, or the heat energy generated in the production process can be used through a heat exchanger to utilize the heat energy, which is more energy-saving and environmentally friendly. The heater and the heat exchanger can also be combined as the heat source 23 according to the needs, so that the heat energy supply is both stable and environmentally friendly.

[0050] Optionally, the box body 10 is further provided with a feed guide roller 13 and a discharge guide roller 14, the feed guide roller 13 is arranged at the feed port of the drying chamber 11, and the discharge guide roller 14 is arranged at the discharge port of the drying chamber 11. The feed guide roller 13 and the discharge guide roller 14 can facilitate the connection of the drying box 100 of the present application to the production line to realize online drying.

[0051] Optionally, the fan 24 is an axial flow fan 24 or a centrifugal fan 24, preferably a centrifugal fan 24, because the airflow generated by the centrifugal fan 24 is more concentrated, and can generate a greater air pressure, which is convenient for transmitting hot air.

[0052] The drying box 100 of the present application utilizes the heat generated by the heat source 23 to convert the airflow generated by the fan 24 into hot air. The hot air enters the upper air guide hood 21 and the lower air guide hood 22 respectively under the continuous blowing of the fan 24. The upper air guide hood 21 and the lower air guide hood 22 respectively blow hot air to the upper and lower surfaces of the product to be dried on the transfer roller 12 at the same time, so that the product to be dried is heated more evenly to avoid deformation caused by local heating. At the same time, the drying efficiency is more efficient than the single-sided heating effect of the electric heating tube. The water vapor generated by the drying will be carried away by the airflow to avoid the water vapor from re-condensing on the surface of the product to be dried. The circulation pipe 25 is used to reintroduce the waste heat in the drying chamber 11 into the air inlet end of the fan 24, so that the waste heat can be reused, which is more energy-saving and environmentally friendly.

[0053] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drying box, comprising a box body (10) and a plurality of material transfer rollers (12), wherein a drying chamber (11) is provided inside the box body (10), and a feed port and a discharge port are provided at both ends of the drying chamber (11), and each of the material transfer rollers (12) is arranged inside the drying chamber (11) at intervals along a direction from the feed port to the discharge port, characterized in that: Also includes a heating mechanism (20); The heating mechanism (20) comprises an upper air guide hood (21), a lower air guide hood (22), a heat source (23) and a fan (24); the upper air guide hood (21) and the lower air guide hood (22) are built in the drying chamber (11), and the upper air guide hood (21) and the lower air guide hood (22) are respectively arranged on the upper and lower sides of the material transfer roller (12); the heat source (23) is arranged at the input ends of the upper air guide hood (21) and the lower air guide hood (22); and the fan (24) transmits the heat generated by the heat source (23) to the upper air guide hood (21) and the lower air guide hood (22) through airflow.

2. The drying box according to claim 1, characterized in that: An upper air guide plate (211) is provided on one side of the upper air guide cover (21) close to the material transfer roller (12), and a plurality of upper air outlet slits (212) are provided at intervals on the upper air guide plate (211); A lower air guide plate (221) is provided on one side of the lower air guide cover (22) close to the material transfer roller (12), and a plurality of lower air outlet slits (222) are provided at intervals on the lower air guide plate (221).

3. The drying box according to claim 2, characterized in that: The length extension direction of the upper air outlet slit (212) and the lower air outlet slit (222) is perpendicular to the conveying direction of the material transfer roller (12).

4. The drying box according to claim 2, characterized in that: A plurality of upper air guide fins (213) are arranged on a side of the upper air guide plate (211) away from the material transfer roller (12); each of the upper air outlet slits (212) corresponds to two upper air guide fins (213); and the distance between the two upper air guide fins (213) corresponding to each of the upper air outlet slits (212) gradually increases from an end close to the material transfer roller (12) to an end away from the material transfer roller (12); A plurality of lower air guide fins (223) are arranged on the side of the lower air guide plate (221) away from the material transfer roller (12); each of the lower air outlet slits (222) corresponds to two lower air guide fins (223); and the distance between the two lower air guide fins (223) corresponding to each lower air outlet slit (222) gradually increases from an end close to the material transfer roller (12) to an end away from the material transfer roller (12).

5. The drying box according to claim 1, characterized in that: The height of the upper air guide cover (21) gradually decreases from a side close to the heat source (23) to a side far from the heat source (23); The height of the lower air guide cover (22) gradually decreases from a side close to the heat source (23) to a side far from the heat source (23).

6. The drying box according to claim 1, characterized in that: The heating mechanism (20) further comprises a circulation pipe (25), the heat source (23) is arranged at the air outlet end of the fan (24), one end of the circulation pipe (25) is connected to the top of the box (10), and the other end is connected to the air inlet end of the fan (24).

7. The drying box according to claim 1, characterized in that: The heating mechanism (20) further comprises a flow divider (26), wherein the flow divider (26) is provided with an air inlet and two air outlets, the air inlet of the flow divider (26) is connected to a heat source (23), and the two air outlets of the flow divider (26) are respectively connected to the input ends of the upper air guide hood (21) and the lower air guide hood (22).

8. The drying box according to claim 7, characterized in that: The heating mechanism (20) further comprises an air collecting hood (27), one end of which is in communication with a side of the heat source (23) away from the diverter hood (26), and the other end of which is in communication with an air outlet end of the fan (24).

9. The drying box according to claim 1, characterized in that: The heat source (23) is a heater or a heat exchanger.

10. The drying box according to claim 1, characterized in that: The box body (10) is also provided with a feed guide roller (13) and a discharge guide roller (14); the feed guide roller (13) is arranged at the feed port of the drying chamber (11), and the discharge guide roller (14) is arranged at the discharge port of the drying chamber (11).

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