External solvent residue removing air box of coating oven

Abstract

The utility model relates to an external solvent residue removing air box of a coating oven, which comprises a box body, an air shower assembly and a guide roller, one side of the box body is provided with an opening, the guide roller is arranged in the box body and is opposite to the opening, and the air shower assembly is detachably arranged at the top of the box body; the air shower assembly comprises a shell, an air inlet and an air outlet are formed in the shell, the air inlet is formed in the outer side of the box body, the air outlet is located in the box body and is opposite to the guide rollers, and air blowing units, a plurality of cooling fins and a plurality of air guide plates which are arranged at intervals are sequentially arranged in the shell from the air inlet to the air outlet. The multiple cooling fins are arranged in parallel, and the multiple air deflectors incline step by step from the middle to the two sides in the axial direction of the guide roller. According to the utility model, the coating product conveyed out of the coating oven can be uniformly cooled and dried, so that the residual solvent on the coating product can be uniformly evaporated and removed, and the coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machine bellows, in particular to an external solvent residue removal bellows for a coating oven. Background Art

[0002] In coating production, solvents are typically used to dissolve or disperse the solid components of the coating. In high-temperature environments, the solvent in the coating evaporates faster, which should aid the drying process. However, if the temperature is too high, the surface solvent may evaporate rapidly before the coating has fully formed a film, causing the solid components on the surface to quickly form a film, resulting in a "surface skinning" phenomenon and trapping some of the solvent within the coating. When these solvents enter the coating process and cool, they are unable to evaporate further, remaining in the product as solvent residue. Solvent residue not only affects the physical properties and chemical stability of the product, but can also cause problems such as odor and discoloration.

[0003] In the current existing technology, the coating is often dried in a hot air oven and then directly enters the next process. The drying time is short and the surface temperature of the coating is always maintained at a high level. After leaving the oven, heat dissipation and drying cannot be achieved, which easily leads to solvent residue in the product and watermarks. Utility Model Content

[0004] The purpose of the utility model is to provide an external solvent removal bellows for a coating oven, aiming to solve the technical problems in the prior art such as the phenomenon of solvent residues caused by excessively high coating temperature and untimely and uneven drying after the coating product is baked in the oven, which affects the appearance and performance of the product after coating.

[0005] In order to solve the above technical problems, the utility model provides an external solvent removal air box for a coating oven, comprising: a box body, an air shower assembly, and a guide roller. An opening is provided on one side of the box body, the guide roller is arranged inside the box body and opposite to the opening, and the air shower assembly is detachably arranged on the top of the box body; the air shower assembly comprises a shell, an air inlet and an air outlet are provided on the shell, the air inlet is arranged on the outside of the box body, the air outlet is located in the box body and opposite to the guide roller, and a blowing unit, a plurality of heat sinks, and a plurality of air guide plates are arranged in sequence from the air inlet to the air outlet in the shell body, the plurality of heat sinks are arranged in parallel, and the plurality of air guide plates are inclined step by step from the middle to both sides along the axial direction of the guide roller.

[0006] The box body is provided with an opening, and the guide roller is located inside the box body and opposite to the opening. The guide roller pulls the coated product in and out of the opening. When the air shower assembly blows air to the end face of the coated product, it can isolate most interferences such as external temperature and impurities, and prevent dust, fine debris, etc. from contaminating the coated product;

[0007] The air shower assembly is detachable relative to the box, which facilitates subsequent maintenance of the air shower assembly. At the same time, when the box is not needed and the external environment is good, only the air shower assembly can be installed to improve its applicability;

[0008] The air inlet is set on the outside of the box body. When maintaining the components inside the shell, maintenance can be carried out quickly from the air inlet. The air outlet is located inside the box body and opposite to the guide roller. It can guide the air from the blowing unit to the guide roller to the greatest extent, thereby improving the efficiency of drying and cooling.

[0009] The heat sink can cool the air at the air inlet to a certain extent. At the same time, multiple spaced and parallel heat sinks can divert the air blown into the shell for the first time, making the air blowing to the guide roller more uniform.

[0010] Multiple air guide plates are also arranged at intervals, and the air guide plates are tilted step by step from the middle to both sides along the axial direction of the guide roller to perform a second diversion, further making the wind more uniform. At the same time, the wind blowing towards the coated product is tilted at a certain angle to prevent uneven coating in a certain part due to excessive wind force.

[0011] Preferably, a first mounting slot and a second mounting slot corresponding to the heat sink and the air guide plate respectively are provided in the shell, the heat sink is inserted in the first mounting slot, and the air guide plate is inserted in the second mounting slot.

[0012] When installing the heat sink and air guide plate, the first mounting slot and the second mounting slot can provide intuitive and accurate positioning for the heat sink and air guide plate, which can simplify the installation process, reduce the installation difficulty, and enable the heat sink and air guide plate to be quickly and accurately installed and removed, facilitating subsequent maintenance.

[0013] Preferably, a filter plate is provided on the shell, and the filter plate is located between the plurality of wind sources and the blowing unit.

[0014] The blowing unit blows air from the outside into the shell through the air inlet. The filter plate can effectively filter out dust, impurities and other pollutants in the air, ensuring the quality of the air sent to the blowing unit and ensuring that the coated product on the guide roller will not be contaminated. It can also reduce the wear of dust, impurities and other pollutants on components such as the blowing unit, shell, heat sink and air guide plate, thereby extending their service life and reducing maintenance costs.

[0015] Preferably, the blowing unit includes a mounting frame and a plurality of fans, the mounting frame is fixed in the shell, and the plurality of fans are arranged on the mounting frame at intervals.

[0016] The mounting bracket provides a stable support platform for the fan, avoiding vibration and noise problems that may be caused by directly mounting the fan on the housing, thereby extending the service life of the fan.

[0017] Multiple fans are spaced apart on the mounting frame. If a problem with a fan occurs, it can be replaced individually without affecting the entire system, reducing maintenance costs and downtime. Furthermore, the fan spacing ensures uniform airflow, preventing air stagnation in certain areas and improving overall cooling efficiency. Each fan independently generates a uniform airflow of similar flow rate, which is evenly distributed to all parts of the guide roller through the heat sink and air deflector, ensuring more uniform heat dissipation and drying.

[0018] Preferably, a detachable mounting ear is provided on the outer side of the shell, and the mounting ear is detachably connected to the box body.

[0019] The shell and the cabinet share mounting ears, allowing the two objects to be closely adjacent and simplifying the connection between them, thereby reducing the space required for the shell structure design and providing stable connection reliability between the shell and the cabinet. The detachable mounting ears make the installation and removal of the shell easier and faster. When maintenance, upgrading or replacement of the shell or cabinet is required, only the mounting ears need to be removed without affecting the stability of the other object.

[0020] Preferably, a plurality of air outlet holes arranged at intervals are provided at the bottom of the box or at the peripheral side close to the bottom of the box, and a plurality of pads are also provided at the bottom of the box.

[0021] Without these air outlets, the wind blowing toward the guide roller will all be blown out from the opening, but most of the wind will be blown out from the side closest to the air outlet, resulting in an air pressure difference between the upper and lower sides of the opening, causing external air to flow from the opening into the box. This may cause dust, impurities, and other pollutants in the external air to affect the coated products. At the same time, the air circulation speed inside the box decreases, which may cause the temperature inside the box to rise, which is not conducive to cooling and drying the coated products. With these air outlets, the air pressure difference at the opening is greatly reduced, and the air circulation speed inside the box is greatly increased, which is conducive to cooling and drying the coated products. When the air outlet is provided at the bottom of the box, the padding can lift the entire box to ensure the normal operation of the air outlet.

[0022] Preferably, filters are provided at the plurality of air outlets.

[0023] Similar to the effect of the aforementioned filter plate, when the inside of the box is actively or passively exchanging air with the outside, the air entering the box can be kept clean to prevent interference with the coating product.

[0024] Preferably, the box body is further provided with at least one outward-opening door, one side of the outward-opening door is rotatably connected to the box body via a hinge, and the other side of the outward-opening door is detachably connected to the box body via a locking member.

[0025] When loading and unloading the air shower assembly, since the air guide plates are arranged at intervals along the axial direction of the guide roller and are gradually inclined toward both sides, it is necessary to set an outward-opening door on one side of the box body to remove the entire air shower assembly, and the box body is preferably kept closed except for the outward-opening door through which the guide roller enters. Therefore, in addition to adding a door that can be opened outward, that is, an outward-opening door, the newly set outward-opening door is equipped with a door that can be opened outward; at least one means that the outward-opening door can be two doors that open relatively or other doors, making the structural design flexible; when the outward-opening door is not needed, the locking part can quickly close the outward-opening door cover to the box body, thereby improving the efficiency of loading and unloading the air shower assembly.

[0026] Preferably, there are a plurality of hinges and locking members, and the plurality of hinges or locking members are arranged at intervals along a connection line between the outward-opening door and the box body.

[0027] When the outward-opening door is closed onto the box body, multiple hinges and locking parts are arranged at intervals at the connection between its edge and the box body. On the one hand, multiple hinges can more evenly distribute the weight and pressure of the outward-opening door when opening and closing, thereby improving the stability and durability of the outward-opening door. On the other hand, they can improve the covering effect between the outward-opening door and the box body, so that the outward-opening door of the box body is completely covered, ensuring the sealing effect of the outward-opening door; multiple locking parts can improve the stability and reliability of the covering between the outward-opening door and the box body, and prevent the outward-opening door from opening due to the failure of a single locking part, thereby destroying the relative cleanliness of the air inside the box body and affecting the coating effect.

[0028] Preferably, the outer surface of the box body is provided with a limiting groove opposite to and adapted to the outward-opening door.

[0029] After the outward-opening door is opened outward relative to the box body, when it needs to be closed, in order to ensure that the outward-opening door does not rotate into the inside of the box body, the outward-opening door does not fail due to rotation into the inside of the box body after the lock piece is locked, and to ensure the relative cleanliness of the air inside the box body, it is necessary to set the limit groove to limit the rotation angle of the outward-opening door, improve the stability and reliability of the connection between the outward-opening door and the box body, and avoid the influence of air impurities on the coating effect.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The use of a relatively closed box structure can greatly reduce the impact of the external environment on the air blown out by the air shower assembly, maintain the relative cleanliness of the air inside the box, and reduce damage to the coating effect; the use of an air shower assembly to dissipate heat and dry the coated products leaving the oven can reduce the solvent residue in the coating of the coated products and improve the coating effect. Among them, multiple heat sinks can cool the air blown out by the air shower assembly to a certain extent, reduce the impact of the air temperature outside the box on the heat dissipation and drying process, and accelerate the heat dissipation of the coating; multiple air guide plates are arranged at intervals along the axial direction of the guide roller and tilted step by step toward both sides, which can make the wind blowing to the guide roller more uniform, avoiding uneven heat dissipation and drying effects of the coating on different parts of the coated product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of the overall forward structure of an external solvent removal air box of a coating oven.

[0034] Figure 2 The figure is a cross-sectional view of an external solvent removal bellows of a coating oven.

[0035] Figure 3 This is a schematic diagram of the overall structure of an external solvent removal air box of a coating oven facing backwards.

[0036] Icons: 10- cabinet; 11- opening; 12- outward opening door; 121- hinged part; 122- locking part; 13- air outlet; 14- foot pad; 20- guide roller; 30- coating product; 40- air shower assembly; 41- shell; 42- air inlet; 43- air outlet; 44- mounting ear; 45- blowing unit; 451- mounting bracket; 452- fan; 46- heat sink; 47- air guide plate; 48- filter plate. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0038] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] In this embodiment, please refer to Figure 1 and Figure 2 As shown, the present invention provides an external solvent removal air box for a coating oven, which includes a box body 10, an air shower assembly 40, and a guide roller 20. An opening 11 is provided on one side of the box body 10, and a guide roller 20 is provided inside the box body 10, and the guide roller 20 is opposite to the opening 11;

[0041] The air shower assembly 40 is detachably mounted on the top of the housing 10 and includes a housing 41 extending from the outside of the housing 10 toward the inside of the housing 10. The housing 41 is provided with an air inlet 42 and an air outlet 43. The air inlet 42 is located on the outside of the housing 10 and is used to connect the housing 41 with the outside of the housing 10. The air outlet 43 is opposite to the guide roller 20 and is used to connect the housing 41 with the inside of the housing 10, thereby maximizing the utilization of the air.

[0042] Inside the shell 41, from the air inlet 42 to the air outlet 43, there are spaced apart blowing units 45, multiple heat sinks 46, and multiple air guide plates 47. The multiple heat sinks 46 are arranged in parallel, and the multiple air guide plates 47 are inclined step by step from the middle to both sides along the axial direction of the guide roller 20.

[0043] It can be understood that the opening 11 is rectangular, and the opening 11 can allow the guide roller 20 to enter the interior of the box 10, and when the guide roller 20 guides the coated product 30, the coated product 30 does not come into contact with the box 10; the air inlet 42 can be the opening 11 of the shell 41 itself, without an additional setting, or it can be a detachable plate with a certain shape; there is a certain angle of deflection between the air guide plate 47 and the heat sink 46, and this deflection makes the multiple air guide plates 47 form a structure that expands from far to near relative to the guide roller 20, so that the multiple air guide plates 47 and the multiple heat sinks 46 together form a stacked grid network structure, so that the wind generated by the blowing unit 45 is evenly distributed to the guide roller 20.

[0044] In addition, the opening 11 can also be of other shapes and can be retracted to be close to the coated product 30; the air shower assembly 40 can be installed in other positions besides the top of the box body 10; the shell 41 can be a straight cylinder, a curved cylinder, a bent cylinder or other structures; the position of the air inlet 42 can also be set on the surface of one side of the box body 10; when the air enters the shell 41 from the air inlet 42 and is then blown toward the guide roller 20 from the air outlet 43, the position of the air outlet 43 is set on the surface of the box body 10.

[0045] In this embodiment, a first mounting groove (not shown) and a second mounting groove (not shown) are provided in the shell 41. The first mounting groove corresponds to a plurality of heat sinks 46, and the plurality of heat sinks 46 can be slidably inserted and removed in the first mounting groove. The second mounting groove corresponds to a plurality of air guide plates 47, and the plurality of air guide plates 47 can be slidably inserted and removed in the second mounting groove.

[0046] It is understandable that these grooves should not extend directly to the edge of the housing 41 to prevent the heat sink 46 or the air guide plate 47 from being separated from the housing 41, thereby improving the stability and reliability of the connection between them.

[0047] In addition, limit blocks can be added at both ends of the first mounting slot or the second mounting slot. The two limit blocks respectively abut the two end surfaces of multiple heat sinks 46 or multiple air guide plates 47 to further prevent the heat sinks 46 or air guide plates 47 from separating from the shell 41, thereby improving the stability and reliability of the connection between them.

[0048] In this embodiment, please refer to Figure 1 As shown, a filter plate 48 is provided on the housing 41 , and the filter plate 48 is located between the plurality of wind sources and the blowing unit 45 .

[0049] It can be understood that the filter plate 48 on the shell 41 is designed to clean and filter the gas outside the box 10 when it flows into the inside of the box 10 through the air inlet 42 and the air outlet 43, and at the same time can provide a certain buffering of the wind force. Therefore, the filter plate 48 can be set at any position in the shell 41.

[0050] In this embodiment, please refer to Figure 1 As shown, the blowing unit 45 includes a mounting frame 451 and a plurality of fans 452 . The mounting frame 451 is fixedly connected to the interior of the housing 41 , and the plurality of fans 452 are installed on the mounting frame 451 at intervals.

[0051] It can be understood that the installation position provided by the mounting bracket 451 does not occupy or rarely occupies the air inlet space of the air inlet 42, and each fan 452 installed on the mounting bracket 451 should maintain the same distance from the heat sink 46 to ensure that the path length of the wind when reaching the guide roller 20 remains the same, thereby reducing the flow difference between the wind at various locations on the guide roller 20.

[0052] In addition, instead of using multiple fans 452, multiple blowers or jets or other devices that can blow air can be used.

[0053] In this embodiment, please refer to Figure 1 As shown, when the box body 10 is connected to the air shower assembly 40, the box body 10 and the shell 41 are connected by mounting ears 44. The mounting ears 44 are two symmetrical "L"-shaped structures. The mounting ears 44 and the box body 10, and the mounting ears 44 and the shell 41 are both detachably connected.

[0054] It can be understood that the mounting ears 44 can be provided on the outer surface or the inner surface of the box body 10 , and there can be multiple mounting ears 44 .

[0055] In addition, the mounting ears 44 can also be two symmetrical "L"-shaped structures with ribs, a prismatic structure, or a cylindrical structure, etc., so as to achieve the functions of the above-mentioned mounting ears 44; different mounting holes (not shown) can also be set on the shell 41 for the mounting ears 44 to adjust the distance between the air shower assembly 40 and the guide roller 20.

[0056] In this embodiment, please refer to Figure 1 As shown, the bottom of the box 10 or the sides of the box 10 near the bottom are provided with a plurality of spaced-apart air outlets 13, and the bottom of the box 10 is also provided with a plurality of columnar pads 14. As can be understood, these air outlets 13 will significantly reduce the pressure difference between the two sides of the coating product 30 at the opening 11, thereby reducing the air flow entering the interior of the box 10 from the opening 11 and increasing the air circulation speed within the box 10; when the air outlets 13 are provided at the bottom of the box 10, the pads 14 can lift the entire box 10 to ensure the normal operation of the air outlets 13.

[0057] Furthermore, in order to adapt the position of the guide roller 20 , the pad foot 14 may be height-adjustable.

[0058] Specifically, filters (not shown) are provided at the plurality of air outlets 13 .

[0059] In addition, a detachable filter that does not contact the coating product 30 may also be provided at the opening 11 .

[0060] In this embodiment, please refer to Figure 3 As shown, a through opening (not shown) is provided on the side opposite to the opening 11 of the box body 10, and the outward-opening door 12 covers the through opening on the box body. A hinge 121 is provided on one side edge between the outward-opening door 12 and the box body 10. The outward-opening door 12 is rotatably connected to the box body 10 through the hinge 121. The hinge 121 is specifically a hinge. A lock 122 is provided on the other side between the outward-opening door 12 and the box body 10. When the outward-opening door 12 is rotated to cover the box body 10, the lock 122 locks the outward-opening door 12 in the covering position. When the lock 122 is released, the outward-opening door 12 can be rotated to open.

[0061] It can be understood that after the outward-opening door 12 is opened, the interior of the box 10 can be maintained, the air shower assembly 40 can be loaded and unloaded, etc.; the hinge 121 is used for the rotational connection between the outward-opening door 12 and the box 10, and the locking member 122 limits the movement of the outward-opening door 12 to ensure that the interior of the box 10 remains in a relatively closed state.

[0062] Therefore, in addition to the opposite side of the opening 11, the outward-opening door 12 can also be set on other sides of the box body 10, and its number and size are not limited. Two relatively open outward-opening doors 12, multiple outward-opening doors 12 set on different sides, etc. can be set; in addition, the hinge 121 and the locking member 122 can also be set on any edge between the outward-opening door 12 and the box body 10.

[0063] Specifically, there are multiple hinges 121 and locks 122, and the multiple hinges 121 or locks 122 are arranged at intervals along the connecting line between the outward-opening door 12 and the box body 10. As can be understood, the multiple hinges 121 can more evenly distribute the weight and pressure when the outward-opening door 12 is opened and closed, thereby improving the stability and durability of the outward-opening door 12. The multiple locks 122 can improve the stability and reliability of the closing between the outward-opening door 12 and the box body 10, preventing the outward-opening door 12 from separating from the box body 10 due to the failure of a single lock 122. The arrangement of the hinges 121 or locks 122 along the connecting line between the outward-opening door 12 and the box body 10 ensures the normal opening and closing of the outward-opening door 12, ensuring the relative sealing of the box body 10.

[0064] Therefore, the plurality of hinges 121 can only be arranged at intervals on one side edge between the outward-opening door 12 and the box body 10 , while the plurality of locking members 122 can be arranged at intervals on one or more side edges between the outward-opening door 12 and the box body 10 .

[0065] Specifically, a limiting groove (not shown) that is opposite to and adapted to the outward-opening door 12 is provided on the outer surface of the box body 10 .

[0066] It is understandable that without the limiting groove, it cannot be guaranteed that the outward-opening door 12 will be accurately covered on the box body 10, nor can it be ensured that relative movement will not occur between the outward-opening door 12 and the box body 10 after covering. Therefore, the size of the bottom side of the limiting groove needs to be greater than or equal to the size of the outward-opening door 12. At the same time, the outward-opening door 12 needs to be able to completely cover the opening.

[0067] The specific application process of this utility model is as follows:

[0068] Installation: The air guide plate 47 is installed in the second installation slot, the heat sink 46 is installed in the first installation slot, the filter plate 48 is installed between the air inlet 42 and the heat sink 46, and each fan 452 is installed on the mounting frame 451 at intervals. Then, the mounting frame 451 is installed into the shell 41 to complete the assembly of the air shower assembly 40; unlock the lock 122 of the outward-opening door 12, rotate the outward-opening door 12 to open it, and then fix the air shower assembly 40 on the box body 10 through the mounting ear 44, rotate the cover of the outward-opening door 12 and lock the lock 122; replace the filter for the air outlet 13; the guide roller 20 is installed into the interior of the box body 10 and opposite to the air outlet 43, and the coating product 30 is passed around the guide roller 20 in and out of the interior of the box body 10.

[0069] Operation: The blowing unit 45 blows external air into the housing 41 from the air inlet. The air passes through the filter plate 48 and is filtered by the filter plate 48. It is then diverted and cooled by multiple heat sinks 46 for the first time. The air is then diverted for the second time by multiple air guide plates 47. The direction of each diverted air is gradually tilted from the central air opposite the guide roller 20 to the two sides, forming air at a certain angle to the guide roller 20. The air blown out of the air outlet 43 is a uniform air that expands from the inside of the housing 41 to the air outlet 43 and blows evenly toward the coated product 30 on the guide roller 20. After that, a portion of the air is blown out of the housing 10 from the opening 11, and most of the remaining air is blown out of the housing 10 from the air outlet 13 through the filter. The guide roller 20 cyclically pulls the coated product 30 in and out of the housing 10. The air from the air outlet 43 dissipates heat, dries it, and ultimately removes residual solvents from the coated product 30.

[0070] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external solvent removal bellows for a coating oven, characterized in that: include: A box, an air shower assembly, and a guide roller, wherein one side of the box is provided with an opening, the guide roller is arranged inside the box and opposite to the opening, and the air shower assembly is detachably arranged on the top of the box; The air shower assembly includes a shell, which is provided with an air inlet and an air outlet. The air inlet is provided on the outside of the box, and the air outlet is located in the box and opposite to the guide roller. The shell is provided with a blowing unit, a plurality of heat sinks, and a plurality of air guide plates arranged at intervals from the air inlet to the air outlet. The plurality of heat sinks are arranged in parallel, and the plurality of air guide plates are inclined step by step from the middle to both sides along the axial direction of the guide roller.

2. The external solvent removal blower of the coating oven according to claim 1, characterized in that: The housing is provided with a first mounting slot and a second mounting slot corresponding to the heat sink and the air guide plate respectively. The heat sink is inserted into the first mounting slot, and the air guide plate is inserted into the second mounting slot.

3. The external solvent removal blower of the coating oven according to claim 1, characterized in that: A filter plate is provided on the shell, and the filter plate is located between the plurality of wind sources and the blowing unit.

4. The external solvent removal blower of a coating oven according to claim 1, characterized in that: The blowing unit includes a mounting frame and a plurality of fans. The mounting frame is fixed in the shell, and the plurality of fans are arranged on the mounting frame at intervals.

5. The external solvent removal blower of the coating oven according to claim 1, characterized in that: The outer side of the shell is provided with a detachable mounting ear, and the mounting ear is detachably connected to the box body.

6. The external solvent removal blower of a coating oven according to claim 1, characterized in that: A plurality of air outlet holes arranged at intervals are provided at the bottom of the box or at the peripheral side close to the bottom of the box, and a plurality of pads are also provided at the bottom of the box.

7. The external solvent removal blower of the coating oven according to claim 6, characterized in that: Filters are provided at the plurality of air outlets.

8. The external solvent removal blower of a coating oven according to claim 1, characterized in that: The box body is further provided with at least one outward-opening door, one side of the outward-opening door is rotatably connected to the box body via a hinge, and the other side of the outward-opening door is detachably connected to the box body via a locking member.

9. The external solvent removal blower of the coating oven according to claim 7, characterized in that: There are multiple hinges and locking parts, and the multiple hinges or locking parts are arranged at intervals along the connection line between the outward-opening door and the box body.

10. The external solvent removal blower of a coating oven according to claim 7, characterized in that: The outer surface of the box body is provided with a limiting groove which is opposite to and adapted to the outward-opening door.

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