CN216668263U - Drying furnace thermal cycle device - Google Patents

Abstract

The utility model provides a drying furnace thermal circulation device which comprises a rack, a hot air top cover, a circulating fan, a heating pipe and a reflecting plate, wherein an air inlet structure and an air outlet structure for air flow to pass through are arranged on the reflecting plate, and the air impeller drives the air flow to circulate along a path from the air inlet structure to the air inlet structure after sequentially passing through the air impeller, the air outlet structure, the heating pipe and a printing stock. On the one hand, the heat loss in the air flow circulation process can be reduced, and on the other hand, the damage to the ambient environment and workers in the ambient environment caused by the heat dissipated into the ambient environment can be reduced.

Description

Drying furnace thermal cycle device

Technical Field

The utility model relates to the field of screen printing, in particular to a drying furnace thermal circulation device.

Background

In some screen printing processes, a drying process is required after printing because of the special properties of the ink on the substrate.

In order to ensure the drying effect, the hot air zone of the existing drying furnace is externally circulated, namely, hot air in the drying furnace is extracted and then is sent into the drying furnace through an external fan, so that the temperature of each zone in the drying furnace is balanced. However, in the external circulation process, the heat loss is serious, and the temperature of the circulation pipeline is high, so that the safety of the surrounding environment and workers is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to reduce the heat loss in the drying furnace heat circulation process and reduce the influence of the circulation process on the surrounding environment and workers, the utility model provides a drying furnace heat circulation device.

The utility model provides a drying furnace heat circulating device, which adopts the following technical scheme:

a drying furnace heat circulation device comprises a frame, a hot air top cover, a circulating fan, a heating pipe and a reflecting plate; the circulating fan comprises a circulating motor and a fan blade wheel, the shell of the circulating motor is connected to the outer side of the hot air top cover, and the output shaft of the circulating motor penetrates into the hot air top cover; the wind impeller is coaxially connected to one end of an output shaft of the circulating motor penetrating into the hot wind top cover; the hot air top cover is movably connected with the rack and can be buckled on the upper side of the rack so as to accommodate the wind impeller, the reflecting plate, the heating pipe and the printing stock in a space between the hot air top cover and the upper side of the rack; the reflecting plate is positioned below the wind impeller and is detachably connected with the inner wall of the hot wind top cover, and an air inlet structure and an air outlet structure for air flow to pass through are arranged on the reflecting plate; the heating pipe is positioned below the reflecting plate and is detachably connected with the reflecting plate; when the drying furnace thermal cycle device works, the printing stock is conveyed below the heating pipe; the air impeller drives the air flow to circulate along a path which flows back to the air inlet structure after passing through the air impeller, the air outlet structure, the heating pipe and the printing stock from the air inlet structure in sequence.

Optionally, the reflector plate has a plurality of reflective grooves; the opening of the reflection groove faces the printing stock, and at least one heating pipe can be accommodated in the reflection groove.

Optionally, the air outlet structure is a plurality of air outlets, the air outlets penetrate through the reflecting plate, and the air outlets are uniformly distributed on the inner wall of each reflecting groove at intervals.

Optionally, the air inlet structure is an air inlet hole, and the air inlet hole is arranged in the middle of the reflecting plate.

Optionally, the reflecting plate is provided with an installation structure for installing the heating pipes, and the installation structure corresponds to the reflecting grooves one to one; the mounting structure comprises two hanging buckles, the hanging buckles are mounted on the inner wall of the reverse groove in a spaced and detachable mode, and two ends of the heating pipe are respectively hung on the two hanging buckles corresponding to the two hanging buckles.

Optionally, the drying furnace thermal cycle device further includes a plurality of conveying rollers and a driving assembly for driving the plurality of conveying rollers to rotate; the driving assembly is mounted on the frame; the conveying rollers are erected on the upper side of the rack side by side, and the printing stocks are tiled on the conveying rollers.

Optionally, the reflective plate comprises a specular stainless steel reflective plate.

Optionally, the hot air top cover comprises an inner layer and an outer layer which are fixedly connected, and a first heat-insulating layer is filled between the inner layer and the outer layer; and a second heat-insulating layer covers the upper side of the frame.

Optionally, the first heat preservation layer and the second heat preservation layer both include rock wool slab layers.

Optionally, a plurality of drying oven thermal circulation devices are closely arranged along the conveying direction of the printing materials, and the printing materials in the drying oven thermal circulation devices upstream in the conveying direction of the printing materials can be conveyed to the drying oven thermal circulation devices downstream.

In summary, the air impeller of the circulating fan sucks the air flow from the air inlet structure, blows the air flow to the periphery along the radial direction of the air impeller, then the air flow passes through the air outlet structure on the reflecting plate, sequentially flows through the heating pipe and the printing stock, and finally flows back to the air impeller of the circulating fan through the air inlet structure on the reflecting plate and continuously circulates along the path, so that the temperature distribution in the area between the hot air top cover and the upper side of the rack is uniform, and the drying effect is good. Compared with the existing drying oven, in the drying oven heat circulation device provided by the utility model, as heat circulates between the hot air top cover and the upper side of the rack, less heat is dissipated to the outside of the device, the drying efficiency of printing materials is favorably ensured, the energy conservation and emission reduction are favorably realized, and the damage to the surrounding environment and workers in the surrounding environment caused by heat dissipation can be reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention for showing the overall structure of a thermal cycle apparatus of a drying oven;

FIG. 2 is a schematic view illustrating the direction of air flow in the thermal cycling apparatus of the drying oven according to the embodiment of the present invention;

FIG. 3 is a top view of a reflector structure embodying embodiments of the utility model;

FIG. 4 is a front view of an embodiment of the present invention for embodying a reflector plate structure;

FIG. 5 is an enlarged view of detail A of FIG. 4;

fig. 6 is a schematic diagram of the present invention primarily embodying the structure of the transfer roll and the drive assembly.

Reference numerals: 1. a frame; 11. a substrate; 2. a hot air top cover; 21. an inner layer; 22. an outer layer; 23. a first insulating layer; 24. a second insulating layer; 3. a circulating fan; 31. a circulating motor; 32. a wind impeller; 4. heating a tube; 5. a reflective plate; 51. a reflective groove; 52. a gourd hole; 6. an air inlet hole; 7. an air outlet; 8. a mounting structure; 81. hanging and buckling; 9. a conveying roller; 91. a roll shaft; 92. a roller; 93. a drive assembly; 931. a motor; 932. a chain; 933. a belt.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of the present invention, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in this specification refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The drying furnace heat circulation device provided by the utility model can be used for drying the printing stock coated with substances such as thermosetting adhesive, thermosetting ink and the like on the surface, wherein the printing stock can be glass, textile and the like.

The utility model is explained in detail below with reference to the accompanying figures 1-6.

Referring to fig. 1 to 3, the heat cycle apparatus of the drying furnace includes a frame 1, a hot air top cover 2, a circulation fan 3, a heating pipe 4, and a reflection plate 5. Circulating fan 3 includes circulating motor 3 and fan wheel 32, and circulating motor 3's shell can be dismantled with the outside of hot-blast top cap 2 and be connected, and circulating motor 3's output shaft penetrates in the hot-blast top cap 2. The wind impeller 32 is coaxially connected to one end of the output shaft of the circulating motor 3 penetrating into the hot wind top cover 2. The hot air top cover 2 is movably connected with the rack 1, and the hot air top cover 2 can be buckled on the upper side of the rack 1 so as to accommodate the air impeller 32, the reflecting plate 5, the heating pipe 4 and the printing stock 11 between the hot air top cover 2 and the upper side of the rack 1. The reflecting plate 5 is positioned below the wind impeller 32 and is detachably connected with the inner wall of the hot wind top cover 2, and an air inlet structure and an air outlet structure for air flow to pass through are arranged on the reflecting plate 5. The heating pipe 4 is positioned below the reflecting plate 5 and is detachably connected with the reflecting plate 5.

In the drying process, the air impeller 32 of the circulating fan 3 firstly sucks the air flow from the air inlet structure, then blows the air flow to the periphery along the radial direction of the air impeller, then the air flow passes through the air outlet structure on the reflecting plate 5 and sequentially flows through the heating pipe 4 and the printing stock 11, finally flows back to the air impeller 32 of the circulating fan 3 through the air inlet structure on the reflecting plate 5 and continuously circulates along the path, so that the temperature distribution in the area between the hot air top cover 2 and the upper side of the rack 1 is uniform.

Compared with the existing drying oven, in the drying oven heat circulation device provided by the utility model, as heat circulates between the hot air top cover 2 and the upper side of the rack 1, the heat dissipated to the outside of the device is less, so that the drying efficiency of the printing stock 11 is ensured, the energy conservation and emission reduction are facilitated, and the damage to the surrounding environment and workers in the surrounding environment caused by heat dissipation can be reduced.

The hot air top cover 2 can be arranged as follows: one side of the two opposite sides is hinged with the frame 1, and the other side can be lifted through the cylinder, so that the hot air top cover 2 can be opened or closed conveniently.

Specifically, the circulation fan 3 supplies power to the airflow. Referring to fig. 1, a casing of a circulation motor 3 is fixed to the outside of a hot wind top cover 2 by bolts. The wind impeller 32 is coaxially sleeved on one end of the output shaft of the circulating motor 3 penetrating into the hot wind top cover 2 and is fixed with the output shaft of the circulating motor 3 through a bolt.

Specifically, the reflecting plate 5 reflects a part of the heat radiation emitted by the heating pipe 4, which is not diffused to the printing material 11, so as to improve the drying effect of the printing material 11. The inside welded fastening of hot-blast top cap 2 has the angle bar, and the angle bar closes into the square frame form along hot-blast top cap inner wall, and reflecting plate 5 is fixed with the angle bar through the bolt, and then fixes reflecting plate 5 on hot-blast top cap 2. The reflective plate 5 may be a plate material with various high temperature resistance and smooth surface, and preferably, the reflective plate 5 in the present embodiment is a reflective plate 5 made of mirror stainless steel, which can better reflect the heat radiation to the printing material 11.

Referring to fig. 3 and 4, in order to further improve the effect of the reflective plate 5 on reflecting heat radiation, a plurality of reflective grooves 51 are formed on the reflective plate 5, the reflective grooves 51 may be trapezoidal grooves, the opening direction of the reflective grooves 51 faces the printing object 11, and one, two, three or more heating pipes 4 can be accommodated in each reflective groove 51.

Referring to fig. 1, the reflection plate 5 is provided with mounting structures 8 for mounting the heating pipes 4, and the mounting structures 8 correspond to the reflection grooves 51 one to one.

Specifically, two gourd holes 52 are spaced apart from each other on the bottom wall of the reflection groove 51. Referring to fig. 3 and 4, the mounting structure 8 includes two hanging buckles 81, the hanging buckles 81 can pass through the larger aperture of the hoist hole 52, and the hanging buckles 81 can be connected to the smaller aperture of the hoist hole 52. As shown in fig. 1 and 2, each mounting structure 8 can be provided with a heating pipe 4. As shown in fig. 4 and 5, each mounting structure 8 can mount two heating pipes 4 side by side. In some embodiments of the present invention, each mounting structure 8 may mount three or more heating tubes 4 side-by-side. Wherein, two ends of each heating pipe 4 are respectively arranged on the corresponding two hanging buckles 81. The heating pipe 4 is arranged on the reflecting plate 5 through the hanging buckle 81, and has the advantage of convenient disassembly and assembly.

Referring to fig. 2 and 5, the air flow below the reflection plate 5 is drawn by the fan impeller 32 of the circulation fan 3 through the air intake structure on the reflection plate 5. The air inlet structure can be an air inlet hole 6, and the air inlet hole 6 is a circular hole and is arranged in the center of the reflecting plate 5 and penetrates through the reflecting plate 5 from top to bottom.

With continued reference to fig. 2 and 5, the air flow above the reflector plate 5 flows to the heating tube 4 and the printing material 11 through the air outlet structure on the reflector plate 5. The air-out structure can be exhaust vent 7, and exhaust vent 7 is the circular port, and exhaust vent 7 sets up on reflection recess 51's wall, and runs through reflection recess 51's wall perpendicularly, and a plurality of exhaust vents 7 of even interval distribution on each reflection recess 51's the wall, and the quantity and the mode of arranging of exhaust vent 7 on each reflection recess 51 are the same.

More specifically, the reflection grooves 51 are symmetrically distributed on the left and right sides of the inlet opening 6.

The air inlet 6 is arranged in the center of the reflecting plate 5, the reflecting grooves 51 are uniformly distributed on the left side and the right side of the air inlet, and the air outlet 7 is distributed in each reflecting groove 51 in the same distribution mode, so that the air flow can uniformly flow between the hot air top cover 2 and the upper side of the rack 1, and the temperature distribution in the area between the hot air top cover 2 and the upper side of the rack 1 can be uniform.

Referring to fig. 1 and 3, in order to reduce the heat loss caused by the heat dissipation through the hot air top cover 2 and the upper side of the frame 1, the hot air top cover 2 is provided to include an inner layer 21 and an outer layer 22, the inner layer 21 and the outer layer 22 are welded and fixed, and a first heat-insulating layer 23 is filled between the inner layer 21 and the outer layer 22. The upper side of the frame 1 is covered with a second insulating layer 24.

The first insulation layer 23 and the second insulation layer 24 may be made of the same or different materials, and may be rock wool slabs or other insulation materials.

The drying furnace heat cycle device of the utility model also comprises a plurality of conveying rollers 9 and a driving component 93 for driving the conveying rollers 9 to rotate.

Specifically, referring to fig. 6, the conveying roller 9 includes a roller shaft 91 and a roller 92. The roll shaft 91 is provided with a plurality of rollers side by side on the upper side of the frame 1, and a plurality of rollers 92 are sleeved on each roll shaft 91 at even intervals. The driving assembly 93 can be a motor 931, a chain 932 and a belt 933, the motor 931 is installed on the machine frame 1, an output shaft of the motor 931 is driven by the chain 932 and the belt 933 to drive the plurality of conveying rollers 9 and the rollers 92 thereon to rotate, the printing stocks 11 are flatly laid on the rollers 92 and move into the space between the hot air top cover 2 and the upper side of the machine frame 1 or move out of the space between the hot air top cover 2 and the upper side of the machine frame 1 along with the rotation of the rollers 92.

More specifically, the rollers 92 may be aluminum rollers that are capable of withstanding high temperatures. The aluminum roller is sleeved with a polytetrafluoroethylene ring at the periphery to reduce the abrasion of the printing stock 11 during conveying and prevent the printing stock 11 from slipping during conveying.

In another embodiment of the present invention, the conveying roller 9 includes a plurality of roller shafts 91 and rollers, the roller shafts 91 are arranged side by side on the upper side of the frame 1, and one roller is sleeved on each roller shaft 91. The printing material 11 is laid flat on the roller and moves into or out of the space between the hot air top cover 2 and the upper side of the machine frame 1 along with the rotation of the roller. The roller can be a rubber coating roller, and the surface of the rubber coating roller is covered with a high-temperature adhesive tape so as to improve the high-temperature resistance of the rubber coating roller.

In addition, in some embodiments of the utility model, a plurality of drying furnace thermal cycle devices are arranged in sequence and closely along the conveying direction of the printing materials, the conveying roller in one drying furnace thermal cycle device can convey the printing materials on the drying furnace thermal cycle device to the conveying roller of the next drying furnace thermal cycle device, the printing materials are continuously dried in the process of being conveyed from the first drying furnace thermal cycle device to the last drying furnace thermal cycle device, the drying efficiency of the printing materials is improved, and the single drying furnace thermal cycle device is small in size and convenient to produce and transport.

The implementation principle of the embodiment is as follows: before drying begins, the printing material 11 is conveyed between the hot air top cover 2 and the upper side of the machine frame 1 through the conveying roller 9.

In the drying process, the hot air top cover 2 is in a closed state, the heating pipe 4 generates heat, the air impeller 32 of the circulating fan 3 sucks air flow from the air inlet structure, then blows the air flow to the periphery along the radial direction of the air flow, then the air flow passes through the air outlet structure on the reflecting plate 5, sequentially flows through the heating pipe 4 and the printing stock 11, finally flows back to the air impeller 32 of the circulating fan 3 through the air inlet structure on the reflecting plate 5 and continuously circulates along the path, so that the temperature distribution in the area between the hot air top cover 2 and the upper side of the rack 1 is uniform, and the drying effect is good.

Moreover, compared with the existing drying oven, in the drying oven heat circulation device provided by the utility model, as the heat circulates in the area between the hot air top cover 2 and the upper side of the rack 1, the heat dissipated to the outside of the device is less, so that the drying efficiency of the printing stock 11 is favorably ensured, the energy conservation and emission reduction are favorably realized, and the damage to the surrounding environment and workers in the surrounding environment caused by heat dissipation can be reduced.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A drying furnace heat circulating device is characterized by comprising a rack, a hot air top cover, a circulating fan, a heating pipe and a reflecting plate;

the circulating fan comprises a circulating motor and a fan blade wheel, the shell of the circulating motor is connected to the outer side of the hot air top cover, and the output shaft of the circulating motor penetrates into the hot air top cover; the wind impeller is coaxially connected to one end of an output shaft of the circulating motor penetrating into the hot wind top cover;

the hot air top cover is movably connected with the rack and can be buckled on the upper side of the rack so as to accommodate the wind impeller, the reflecting plate, the heating pipe and the printing stock in a space between the hot air top cover and the upper side of the rack;

the reflecting plate is positioned below the wind impeller and is detachably connected with the inner wall of the hot wind top cover, and an air inlet structure and an air outlet structure for air flow to pass through are arranged on the reflecting plate;

the heating pipe is positioned below the reflecting plate and is detachably connected with the reflecting plate;

when the drying furnace thermal cycle device works, the printing stock is conveyed below the heating pipe; the air impeller drives the air flow to circulate along a path which flows back to the air inlet structure after passing through the air impeller, the air outlet structure, the heating pipe and the printing stock from the air inlet structure in sequence.

2. The drying oven thermal cycle apparatus of claim 1, wherein: the reflecting plate is provided with a plurality of reflecting grooves; the opening of the reflection groove faces the printing stock, and at least one heating pipe can be accommodated in the reflection groove.

3. The drying oven thermal cycle apparatus of claim 2, wherein: the air outlet structure is a plurality of air outlet holes, the air outlet holes penetrate through the reflecting plate, and the air outlet holes are uniformly distributed on the inner wall of each reflecting groove at intervals.

4. The drying oven thermal cycle apparatus of claim 3, wherein: the air inlet structure is an air inlet hole, and the air inlet hole is formed in the middle of the reflecting plate.

5. The drying oven thermal cycle apparatus of claim 2, wherein: the reflecting plate is provided with mounting structures for mounting the heating pipes, and the mounting structures correspond to the reflecting grooves one to one;

the mounting structure comprises two hanging buckles, the two hanging buckles are mounted on the inner wall of the reflection groove at intervals and detachably, and two ends of the heating pipe are respectively hung on the two hanging buckles corresponding to the two hanging buckles.

6. The drying oven thermal cycle apparatus of claim 1, wherein: the drying furnace thermal cycle device further comprises a plurality of conveying rollers and a driving assembly for driving the conveying rollers to rotate;

the driving assembly is mounted on the frame;

the conveying rollers are erected on the upper side of the rack side by side, and the printing stocks are tiled on the conveying rollers.

7. The drying oven thermal cycle apparatus of claim 1, wherein: the reflective plate comprises a specular stainless steel reflective plate.

8. The drying oven thermal cycle apparatus of claim 1, wherein: the hot air top cover comprises an inner layer and an outer layer which are fixedly connected, and a first heat-insulating layer is filled between the inner layer and the outer layer; and a second heat-insulating layer covers the upper side of the rack.

9. The drying oven thermal cycle apparatus of claim 8, wherein: the first heat preservation layer and the second heat preservation layer both comprise rock wool plate layers.

10. The drying oven thermal cycle apparatus of claim 1, wherein: the drying furnace thermal circulation devices are closely arranged along the conveying direction of the printing materials, and the printing materials in the drying furnace thermal circulation devices positioned at the upstream of the conveying direction of the printing materials can be conveyed to the drying furnace thermal circulation devices positioned at the downstream.

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