Drying equipment

Abstract

The utility model belongs to the technical field of drying, and discloses drying equipment. A furnace body is provided with a mounting opening; the heating assembly is movably connected to the furnace body, and the heating assembly has a closed state in which the heating assembly is mounted at the mounting opening and an open state in which the heating assembly is located outside the furnace body; the shielding assembly comprises two first shielding plates, and the two first shielding plates are connected to the outer wall of the furnace body and oppositely arranged on the two sides of the mounting opening in the first direction; and the first direction is the same as the conveying direction of the product in the furnace body. The drying equipment provided by the utility model can reduce the risk of damaging the structure on the outer wall of the furnace body, and has higher reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying technical field especially relates to a drying equipment. BACKGROUND

[0002] Galvanized steel sheet is to prevent the surface of steel sheet from suffering corrosion, prolongs its service life, coats with a layer of metal zinc on the surface of steel sheet, and this kind of zinc-coated steel sheet is called galvanized steel sheet. Galvanized steel sheet is generally widely used in building, household appliance, vehicle and ship, container manufacturing industry, electromechanical industry and other industries. Galvanized steel sheet needs to be dried after galvanizing.

[0003] In the prior art, a drying heating furnace is usually used to quickly dry the galvanized steel sheet. The drying heating furnace comprises a furnace body and a plurality of heaters installed on the furnace body. The galvanized steel sheet is conveyed into the furnace body by a conveying device, and the heaters release heat into the furnace body to dry the coating on the galvanized steel sheet. In order to improve the drying efficiency, the conveying device continuously drives the galvanized steel sheet to move in the furnace body. When the moving speed of the galvanized steel sheet in the heating furnace slows down or is 0, since the heater is usually a constant-power heater, the heater will continue to provide heat into the furnace body, which may damage the galvanized steel sheet. Therefore, the heater is usually equipped with a turnover mechanism, which can drive the heater to turn over relative to the furnace body when the moving speed of the galvanized steel sheet in the heating furnace slows down or is 0, so that the heating surface of the heater moves out of the furnace body. At this time, the temperature in the furnace body will not be too high, and thus the galvanized steel sheet will not be damaged. However, since the outer wall of the furnace body is also provided with external equipment, such as sensors, smoke pipes, air cylinders, etc., the heating surface of the heater directly faces the external equipment, which may burn the external equipment, and the reliability is low. SUMMARY

[0004] The utility model aims at providing a kind of drying equipment, reduce the risk of damaging structure on the outer wall of furnace, with higher reliability.

[0005] As conceived above, the technical scheme adopted by the utility model is as follows:

[0006] The drying equipment comprises:

[0007] The furnace body is provided with a mounting port.

[0008] The heating assembly is movably connected to the furnace body, and has a closed state of being mounted to the mounting port and an open state of being located outside the furnace body.

[0009] The shielding assembly comprises two first shielding plates, both of which are connected to the outer wall of the furnace body and oppositely arranged on both sides of the mounting port along a first direction.

[0010] In one of the embodiments, the first shielding plate comprises a shielding body and a heat insulation layer arranged on the shielding body, the shielding body is connected to the outer wall of the furnace body, and the heat insulation layer is arranged on the side of the shielding body facing the installation opening.

[0011] In one of the embodiments, the first shielding plate further comprises a wire mesh structure, the wire mesh structure is connected to the shielding body and forms a heat insulation cavity, and the heat insulation layer is limited in the heat insulation cavity.

[0012] In one of the embodiments, the first shielding plate further comprises a plurality of reinforcing members, the plurality of reinforcing members are arranged in the length direction and the width direction of the shielding body, and are used for connecting the wire mesh structure and the shielding body.

[0013] In one of the embodiments, in the second direction, the distance between the heating surface of the heating assembly in the open state and the furnace body is a first distance, the length of the first shielding plate in the second direction is a first length, and the first length is greater than or equal to the first distance; the second direction is perpendicular to the first direction.

[0014] And / or,

[0015] The length of the heating assembly in the third direction is a second length, the length of the first shielding plate in the third direction is a third length, and the third length is greater than or equal to the second length.

[0016] In one of the embodiments, the two side walls of the furnace body in the second direction are each provided with a plurality of installation openings, and each of the installation openings is provided with the heating assembly;

[0017] The plurality of heating assemblies located on the same side wall of the furnace body are arranged at intervals along the first direction.

[0018] The shielding assembly is provided with a plurality of groups, the plurality of installation openings correspond to the plurality of groups of shielding assemblies one by one, and the two first shielding plates of each group of shielding assemblies are arranged opposite to each other along the first direction on the two sides of the installation opening corresponding thereto.

[0019] In one of the embodiments, the first shielding plate is connected with a connecting assembly on both sides in the third direction, the connecting assembly comprises a connecting seat, a first connecting plate and a second connecting plate, the connecting seat is connected to the furnace body, the first connecting plate and the second connecting plate are connected perpendicularly, and the first connecting plate and the second connecting plate are both connected to the connecting seat, and the surface of the first connecting plate facing away from the second connecting plate is connected to the side wall of the first shielding plate.

[0020] In one of the embodiments, the drying equipment further comprises a driving assembly connected to the heating assembly and configured to drive the heating assembly to move relative to the furnace body along the second direction, so as to switch the heating assembly between the closed state and the open state.

[0021] In one of the embodiments, the furnace body is a vertical furnace, and the height direction of the furnace body is the first direction.

[0022] In one of the embodiments, the shielding assembly further comprises two second shielding plates, both of which are connected to the outer wall of the furnace body and oppositely arranged at two sides of the installation opening along a third direction.

[0023] The present application has the following beneficial effects:

[0024] The drying equipment provided by the present application has the outer wall of the furnace body provided with a shielding assembly, the shielding assembly comprising two first shielding plates oppositely arranged at two sides of the installation opening along the first direction, when the heating assembly is in the open state, the heating assembly is located outside the installation opening, and the heat released by the heating assembly can be shielded by the two first shielding plates, thereby reducing the influence of high temperature on the structure installed on the outer wall of the furnace body, so as to avoid damaging the structure installed on the outer wall of the furnace body, and the drying equipment has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the contents of the embodiments of the present application and the drawings without creative labor.

[0026] Figure 1 is a structural schematic view of the drying equipment provided by the embodiments of the present application;

[0027] Figure 2 is a structural schematic view of the first shielding plate provided by the embodiments of the present application;

[0028] Figure 3 is a structural schematic view of the drying equipment provided by the embodiments of the present application; Figure 2

[0029] Figure 4 is a partial sectional view of the first shielding plate provided by the embodiments of the present application;

[0030] Figure 5 is a schematic view of the heating assembly and the driving assembly provided by the embodiments of the present application.

[0031] In the drawings:​

[0032] 100, furnace body; 110, mounting port; 200, heating assembly; 210, heating surface; 300, shielding assembly; 310, first shielding plate; 311, shielding body; 312, heat insulation layer; 313, wire mesh structure; 314, reinforcing member; 320, connecting assembly; 321, connecting seat; 322, first connecting plate; 323, second connecting plate; 400, driving assembly; 410, driving member; 500, connecting member; X, second direction; Y, third direction; Z, first direction. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, but not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all.

[0034] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. In the description of the embodiment, if not specially stated, "a plurality of" specifically refers to two or more than two.

[0037] In the description of the present embodiment, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a mediating element.

[0039] The technical solutions of the present utility model will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0040] The present embodiment provides a drying equipment for drying products, reducing the risk of damaging the structure on the outer wall of the furnace body 100, and having high reliability.

[0041] As shown in Figures 1 to 5 The drying equipment includes a furnace body 100, a heating assembly 200, and a shielding assembly 300. The furnace body 100 is provided with a mounting port 110 for mounting the heating assembly 200. The mounting port 110 is in communication with the inside of the furnace body 100, so that the heating assembly 200 can provide heat to the inside of the furnace body 100 after being mounted in the mounting port 110.

[0042] The heating assembly 200 is movably connected to the furnace body 100, so that the heating assembly 200 can move relative to the furnace body 100. The heating assembly 200 has a closed state of being mounted in the mounting port 110 and an open state of being located outside the furnace body 100 relative to the furnace body 100. When the heating assembly 200 is in the closed state, the heat generated by the heating assembly 200 can enter the furnace body 100. When the heating assembly 200 is in the open state, the heating surface 210 of the heating assembly 200 has a certain distance from the wall of the furnace body 100, so that the distance between the heating assembly 200 and the products in the furnace body 100 is increased, and the heat generated by the heating assembly 200 will not be directly transmitted to the products in the furnace body 100, thereby preventing the products from being damaged due to excessive temperature.

[0043] Exemplarily, please refer to Figure 1The shielding assembly 300 includes two first shielding plates 310. The two first shielding plates 310 are connected to the outer wall of the furnace body 100 and oppositely arranged on both sides of the mounting port 110 along the first direction Z. The first shielding plates 310 are used to shield the heat emitted by the heating assembly 200 in the open state. Specifically, the heat emitted by the heating assembly 200 in the open state is shielded by the first shielding plates 310 and does not directly pass along the outer wall of the furnace body 100, but is transmitted along the first shielding plates 310 away from the furnace body 100, so that the components mounted on the outer wall of the furnace body 100 are not affected by high temperature radiation, avoiding damage due to excessive temperature. When the heating assembly 200 is a combustion heating structure, the flue gas generated by the heating assembly 200 can move away from the furnace body 100 under the guidance of the two first shielding plates 310, so as not to flow along the outer wall of the furnace body 100, reducing the risk of damaging the structure on the furnace body 100. The first direction Z is the same as the conveying direction of the product in the furnace body 100.

[0044] In some optional embodiments, as shown in Figure 1 The first shielding plates 310 can be connected to the outer wall of the furnace body 100 perpendicularly. In other optional embodiments, the included angle between the first shielding plates 310 and the outer wall of the furnace body 100 can be greater than or less than 90 degrees, which is not limited in the embodiment.

[0045] The drying equipment provided in the embodiment includes the shielding assembly 300 arranged on the outer wall of the furnace body 100. The shielding assembly 300 includes two first shielding plates 310 oppositely arranged on both sides of the mounting port 110 along the first direction Z. When the heating assembly 200 is in the open state, the heating assembly 200 is located outside the mounting port 110. The heat released by the heating assembly 200 can be shielded by the two first shielding plates 310, thereby reducing the influence of high temperature on the structure mounted on the outer wall of the furnace body 100, so as to avoid damaging the structure mounted on the outer wall of the furnace body 100, and has high reliability.

[0046] The furnace body 100 in the embodiment can be a vertical furnace or a horizontal furnace, which is not limited in the embodiment. The drawings in the embodiment show the case that the furnace body 100 is a vertical furnace. The height direction of the furnace body 100 is the first direction Z, the length direction of the furnace body 100 is the second direction X, and the width direction of the furnace body 100 is the third direction Y, that is, any two of the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0047] Optionally, the first shielding plates 310 can be conventional metal plates, composite plates, etc., and can also be heat insulation plates combined by multiple structures.

[0048] In order to improve the heat insulation effect of the first shielding plates 310, in one embodiment, as shown in Figure 2As shown, the first shielding plate 310 comprises a shielding body 311 and a heat insulation layer 312 arranged on the shielding body 311. The shielding body 311 is connected to the outer wall of the furnace body 100, and the heat insulation layer 312 is arranged on the side of the shielding body 311 facing the mounting port 110. The heat insulation layer 312 is made of heat insulation material, and the arrangement of the heat insulation layer 312 can block the heat released by the heating assembly 200 from being transmitted to the shielding body 311, so that the temperature of the shielding body 311 does not become too high, and the shielding body 311 does not release heat in the form of radiation to the structure on its side, thereby avoiding damage to the structure on its side due to high temperature. The shielding body 311 in the embodiment can be made of metal material to improve the connection strength of the first shielding plate 310 and the furnace body 100.

[0049] The material of the heat insulation layer 312 is usually a non-metal material to have higher heat insulation effect. When the material of the shielding body 311 is metal, in order to improve the connection effect of the heat insulation layer 312 and the shielding body 311, please continue to refer to Figure 2 , the first shielding plate 310 further comprises a wire mesh structure 313 connected with the shielding body 311 and cooperating with the shielding body 311 to form a heat insulation cavity (not shown in the figure), and the heat insulation layer 312 is limited in the heat insulation cavity to avoid separation of the heat insulation layer 312 and the shielding body 311.

[0050] In some optional embodiments, the material of the wire mesh structure 313 can be metal, which can ensure the structural strength of the wire mesh structure 313 and improve the limiting effect of the heat insulation layer 312.

[0051] In order to further improve the fixing effect of the heat insulation layer 312, as shown in Figure 2 and Figure 4 , the first shielding plate 310 further comprises a plurality of reinforcing members 314. The reinforcing members 314 are used to connect the wire mesh structure 313 and the shielding body 311. The plurality of reinforcing members 314 are arranged in the length direction and the width direction of the shielding body 311 to improve the uniformity of the fixing of the wire mesh structure 313.

[0052] In some optional embodiments, the reinforcing member 314 is a bolt, which is screwed on the shielding body 311 after penetrating through the wire mesh structure 313. Correspondingly, a hole is formed on the heat insulation layer 312 corresponding to the mounting position of the bolt, and the bolt penetrates through the hole and is connected with the shielding body 311. Moreover, a gasket is arranged between the nut of the reinforcing member 314 and the wire mesh structure 313, and the diameter of the gasket is greater than the diameter of the mesh hole of the wire mesh structure 313, so that the gasket cannot penetrate through the wire mesh structure 313, thereby realizing the connection of the wire mesh structure 313 and the shielding body 311.

[0053] It can be understood that the gasket can not be arranged between the nut and the wire mesh structure 313, and the diameter of the nut is greater than the size of the mesh of the wire mesh structure 313, so that the nut cannot pass through the wire mesh structure 313, and the effect of connecting the wire mesh structure 313 and the shielding body 311 can be achieved.

[0054] In order to ensure the shielding effect of the first shielding plate 310 on the heating assembly 200, in the embodiment, the distance between the heating surface 210 of the heating assembly 200 in the open state and the outer wall of the furnace body 100 in the second direction X is a first distance. One side of the first shielding plate 310 in the second direction X abuts against the outer wall of the furnace body 100, and the length of the first shielding plate 310 in the second direction X is a first length, which is greater than or equal to the first distance, that is, the projection of the heating surface 210 in the first direction Z is located on the first shielding plate 310 and will not be located outside the first shielding plate 310. In this way, it is ensured that the heating surface 210 of the heating assembly 200 will not exceed the first shielding plate 310 in the second direction X when the heating assembly 200 is in the open state, thereby ensuring the effect of the first shielding plate 310 shielding the heat generated by the heating surface 210, so that the heat generated by the heating surface 210 will not be directly emitted to the structure of the outer wall of the furnace body 100.

[0055] In order to further improve the shielding effect of the first shielding plate 310, in an embodiment, the length of the heating assembly 200 in the third direction Y is a second length, the length of the first shielding plate 310 in the third direction Y is a third length, and the third length is greater than or equal to the second length. In this way, it can be achieved that the heating surface 210 of the heating assembly 200 will not exceed the first shielding plate 310 in the third direction Y, thereby enabling the heat generated by the heating surface 210 to be shielded by the first shielding plate 310.

[0056] It should be noted that in the embodiment, the center of the heating assembly 200 in the third direction Y and the center of the first shielding plate 310 in the third direction Y are located on the same straight line in the first direction Z, that is, the heating assembly 200 and the first shielding plate 310 are centrally arranged in the first direction Z. In this way, on the basis of ensuring the shielding effect, the size of the first shielding plate 310 in the third direction Y can be smaller, thereby reducing the material of the first shielding plate 310.

[0057] Optionally, as Figure 3As shown, the first shielding plate 310 is connected with a connecting assembly 320 on both sides in the third direction Y, the connecting assembly 320 comprises a connecting seat 321, a first connecting plate 322 and a second connecting plate 323, the connecting seat 321 is connected to the furnace body 100, the first connecting plate 322 and the second connecting plate 323 are vertically connected, and the first connecting plate 322 and the second connecting plate 323 are both connected to the connecting seat 321, and the surface of the first connecting plate 322 away from the second connecting plate 323 is connected to the side wall of the first shielding plate 310.

[0058] Since the product is conveyed in the furnace body 100 by a conveying device, the conveying device includes but is not limited to a tensioning roller provided with an inlet and an outlet of the furnace body 100. In order to improve the drying efficiency of the product, taking a vertical furnace as an example, the inlet of the furnace body 100 is located at the bottom of the furnace body 100, and the outlet is located at the top of the furnace body 100. After the product enters the furnace body 100 from the inlet, it is conveyed to the top of the furnace body 100 and then output from the outlet. Exemplarily, the drying equipment provided in the embodiment is a drying furnace, and a cooling furnace is provided downstream of the drying furnace, and the inlet of the cooling furnace is located at the top, so that the product output from the top of the furnace body 100 can be directly reversed into the cooling furnace for cooling.

[0059] In some optional embodiments, as shown in Figure 1 As shown, the two side walls of the furnace body 100 in the second direction X are provided with a plurality of mounting ports 110, and each mounting port 110 is provided with a heating assembly 200, so that each drying cavity has a plurality of heating assemblies 200, so that the two surfaces in the thickness direction of the product can be dried and heated, until the product is output from the furnace body 100, thereby ensuring the drying effect and drying efficiency of the product, and improving the production efficiency of the drying equipment.

[0060] It should be noted that the plurality of heating assemblies 200 located on the same side wall of the furnace body 100 are arranged at intervals along the first direction Z to ensure the heating and drying effect of the product. Further optionally, the plurality of heating assemblies 200 located on the same side wall of the furnace body 100 are arranged at equal intervals along the first direction Z to improve the uniformity of heating the product.

[0061] In order to be able to shield each group of heating assemblies 200 in the open state, in the embodiment, the shielding assembly 300 is provided with a plurality of groups. The plurality of mounting ports 110 correspond to the plurality of groups of shielding assemblies 300 one by one, and the two first shielding plates 310 of each group of shielding assemblies 300 are oppositely arranged on both sides of the mounting port 110 corresponding thereto along the first direction Z. In this way, each group of heating assemblies 200 has a corresponding first shielding plate 310, further improving the reliability of the drying equipment.

[0062] In some optional embodiments, the movement of the heating assembly 200 relative to the furnace body 100 can be realized by the driving assembly 400. As shown in Figure 1 and Figure 5As shown, the drying apparatus further comprises a driving assembly 400. The driving assembly 400 is connected to the heating assembly 200 and is configured to drive the heating assembly 200 to move relative to the furnace body 100 along the second direction X, so as to switch the heating assembly 200 between the closed state and the open state. By providing the driving assembly 400, the automation degree of the movement of the heating assembly 200 can be improved, so that the heating assembly 200 can be quickly switched between the closed state and the open state, and the risk of burning the product can be reduced. In the embodiment, the driving assembly 400 drives the heating assembly 200 to move along the second direction X, that is, the heating assembly 200 in the embodiment is translated instead of being flipped, so that the first shielding plate 310 does not interfere with the movement of the heating assembly 200, and the burning of the first shielding plate 310 due to the heating surface 210 of the heating assembly 200 facing the first shielding plate 310 can be avoided.

[0063] Further optionally, the driving assembly 400 can comprise two driving members 410 connected to two side walls of the furnace body 100 along the third direction Y, and the driving ends of the two driving members 410 are connected to the heating assembly 200 through a connecting member 500, so as to drive the heating assembly 200 to move along the second direction X. For example, the driving member 410 can comprise a pneumatic cylinder, a linear motor or the like, and the embodiment is not limited in this regard.

[0064] In one embodiment, each heating assembly 200 can comprise a plurality of heaters, which can be porous medium burners capable of generating high-temperature flue gas and releasing infrared radiation into the furnace body 100 by burning, and the high-temperature flue gas and the infrared radiation are used to heat the product. The plurality of heaters are arranged in sequence along the third direction Y, so as to improve the uniformity of drying the product along the third direction Y.

[0065] In the embodiment, the two first shielding plates 310 are located on both sides of the mounting port 110 along the first direction Z. In order to avoid high-temperature damage to the structures on both sides of the mounting port 110 along the third direction Y, in one embodiment, the shielding assembly 300 further comprises two second shielding plates (not shown in the figure). The two second shielding plates are connected to the outer wall of the furnace body 100 and are arranged opposite to each other on both sides of the mounting port 110 along the third direction Y. In this way, the structures on both sides of the mounting port 110 along the third direction Y can be protected, and the heat released by the heating surface 210 can be prevented from burning the structures on the outer wall of the furnace body 100, thereby further improving the reliability of the drying apparatus.

[0066] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, but also can include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. Drying apparatus, characterized in that The utility model relates to a heating furnace, which comprises: a furnace body (100) provided with a mounting port (110); a heating assembly (200) movably connected to the furnace body (100), the heating assembly (200) having a closed state mounted in the mounting port (110) and an open state located outside the furnace body (100); a shielding assembly (300) comprising two first shielding plates (310), each of the two first shielding plates (310) being connected to an outer wall of the furnace body (100) and oppositely arranged on both sides of the mounting port (110) along a first direction (Z), the first direction (Z) being the same as the conveying direction of products in the furnace body (100).

2. The drying apparatus according to claim 1, characterized by The first shielding plate (310) comprises a shielding body (311) connected to the outer wall of the furnace body (100) and a heat insulation layer (312) arranged on the shielding body (311), the heat insulation layer (312) being arranged on the side of the shielding body (311) facing the mounting port (110).

3. The drying apparatus according to claim 2, characterized in that, The first shielding plate (310) further comprises a wire mesh structure (313) connected to the shielding body (311) and forming a heat insulation cavity, the heat insulation layer (312) being limited in the heat insulation cavity.

4. The drying apparatus according to claim 3, characterized in that, The first shielding plate (310) further comprises a plurality of reinforcing members (314) arranged in the length direction and the width direction of the shielding body (311) and used for connecting the wire mesh structure (313) and the shielding body (311).

5. Drying apparatus according to any of claims 1-4, characterized in that In a second direction (X), the distance between the heating surface (210) of the heating assembly (200) in the open state and the furnace body (100) is a first distance, the length of the first shielding plate (310) in the second direction (X) is a first length, and the first length is greater than or equal to the first distance; the second direction (X) is perpendicular to the first direction (Z). And / or, The length of the heating assembly (200) in a third direction (Y) is a second length, the length of the first shielding plate (310) in the third direction (Y) is a third length, and the third length is greater than or equal to the second length.

6. Drying apparatus according to any of claims 1-4, characterized in that Each of the two side walls of the furnace body (100) in the second direction (X) is provided with a plurality of mounting ports (110), and each of the mounting ports (110) is mounted with the heating assembly (200); The plurality of heating assemblies (200) located on the same side wall of the furnace body (100) are arranged at intervals along the first direction (Z); The shielding assembly (300) is provided with a plurality of groups, the plurality of mounting ports (110) and the plurality of groups of shielding assemblies (300) are in one-to-one correspondence, and the two first shielding plates (310) of each group of shielding assemblies (300) are oppositely arranged on both sides of the mounting port (110) corresponding thereto along the first direction (Z).

7. Drying apparatus according to any of claims 1-4, characterized in that The first shielding plate (310) is connected with a connecting assembly (320) on both sides in the third direction (Y), the connecting assembly (320) comprises a connecting seat (321), a first connecting plate (322) and a second connecting plate (323), the connecting seat (321) is connected to the furnace body (100), the first connecting plate (322) and the second connecting plate (323) are connected vertically, and the first connecting plate (322) and the second connecting plate (323) are both connected to the connecting seat (321), and the surface of the first connecting plate (322) away from the second connecting plate (323) is connected to the side wall of the first shielding plate (310).

8. The drying apparatus according to any one of claims 1 to 4, characterized in that, The drying equipment further comprises a driving assembly (400) connected to the heating assembly (200) and used for driving the heating assembly (200) to move relative to the furnace body (100) along the second direction (X) so as to switch the heating assembly (200) between the closed state and the open state.

9. The drying apparatus according to any one of claims 1 to 4, characterized in that, The furnace body (100) is a vertical furnace, and the height direction of the furnace body (100) is the first direction (Z).

10. The drying apparatus according to any one of claims 1 to 4, characterized in that, The shielding assembly (300) further comprises two second shielding plates, and the two second shielding plates are both connected to the outer wall of the furnace body (100) and oppositely arranged on both sides of the mounting port (110) in the third direction (Y).

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