Multi-section air duct circulation structure of curing drying tunnel

Abstract

The utility model provides a multi-section air duct circulation structure of a curing drying tunnel, which comprises a drying oven, the multi-section air duct circulation structure comprises a drying tunnel body, and the air inlet end of the drying tunnel body is provided with a high-temperature fan; the air inlet ends of the branch air ducts are all communicated with the drying tunnel body, and the air outlet end of the backflow air duct penetrates through the drying oven and is connected with the high-temperature fan; the utility model relates to the technical field of air channel circulation structures, air in a drying oven is guided into a drying channel body through a backflow air channel under the action of a high-temperature fan, when flowing along the drying channel body, air flow is dispersed and enters different branch air channels, and the air flow is discharged into the drying oven again through air outlet screen plates in the branch air channels for circulation. Hot air circulates in the drying oven, the phenomenon of a local high-temperature area and a local low-temperature area in the drying oven is prevented, and the workpiece is evenly heated.

Description

Technical Field

[0001] This utility model relates to the field of air duct circulation structure technology, and in particular to a multi-segment air duct circulation structure for a curing drying tunnel. Background Technology

[0002] The hot air generated by the hot air blower is introduced into the oven through pipes. The hot air flows along the curing tunnel inside the oven so that the coating on the surface of the workpiece can be cured and dried at the set temperature and time.

[0003] Common curing oven designs have a unidirectional air outlet, and a fan wall is designed at the position of the air outlet of the curing oven. The fan wall is used to blow the hot air out of the curing duct back into the oven, resulting in a high temperature zone near the fan wall and a low temperature zone far away from the fan wall. The temperature is uneven between the high temperature zone and the low temperature zone, which makes the drying time of the workpieces in the oven inconsistent. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-segment airflow circulation structure for a curing oven, which solves the problems of uneven temperature inside the oven, high-temperature zones and low-temperature zones, and large differences in drying time for workpieces located in the high-temperature and low-temperature zones.

[0005] This utility model provides a multi-segment airflow circulation structure for a curing oven, comprising: an oven, wherein the multi-segment airflow circulation structure includes:

[0006] The drying tunnel body is connected to the drying chamber of the oven, and a high-temperature fan is installed at the air inlet end of the drying tunnel body;

[0007] Multiple branch air ducts, the air inlet of each branch air duct is connected to the drying tunnel body, and an air outlet mesh plate is connected to the side of each branch air duct away from the drying oven.

[0008] The multiple branch air ducts are evenly distributed based on the drying tunnel body to uniformly guide the hot air in the drying tunnel body to the drying chamber of the oven.

[0009] A return air duct, the bottom end of which is fixedly connected to the oven, and the air outlet end of which passes through the oven and is connected to the high-temperature fan.

[0010] Preferably, the air inlet end of the return air duct is equipped with a filter element, which is used to filter solid impurities in the return gas;

[0011] The filter element includes:

[0012] A return air pipe is threadedly connected to the air inlet end of the return air duct. A filter screen is installed at the bottom end of the return air pipe to block solid impurities in the return gas. A collection hopper is connected to the top end of the return air pipe.

[0013] Preferably, the inner cavity of the return air duct is equipped with an adsorption element;

[0014] The adsorption element includes:

[0015] An insert rod, one end of which extends into the inner cavity of the return air duct, and the other end of which is provided with a threaded cap, the threaded cap being threadedly connected to the inner thread of the return air duct;

[0016] An activated carbon cylinder is connected to the outer periphery of the insertion rod, and the activated carbon cylinder is used to adsorb heavy metal ions in the return gas.

[0017] Preferably, a storage assembly is installed in the drying chamber of the oven;

[0018] The storage component includes:

[0019] Two support plates, one side of each support plate is connected to the return air duct, and the other side of each support plate is connected to the branch air duct;

[0020] A sliding rod, the top end of which is fixedly connected to a suspension frame for suspending workpieces, and the bottom end of which is hinged to a threaded joint, which is connected to the internal thread of the bearing plate;

[0021] A shelf, which is connected to the slide rod via a connector, is used to support workpieces.

[0022] Preferably, the connector includes:

[0023] A sliding sleeve, the outer periphery of which is fixedly connected to the shelf, and the sliding sleeve is slidably connected to the sliding rod;

[0024] The sliding sleeve is equipped with a locating pin, and the sliding sleeve is connected to the sliding rod through the locating pin.

[0025] Preferably, the sliding sleeves are symmetrically distributed based on the shelf.

[0026] Preferably, the shelf has through holes evenly distributed in it, which are used for the circulation of hot air.

[0027] Preferably, a door panel is hinged to the side of the oven away from the high-temperature fan, and the door panel is used to control the opening and closing of the oven.

[0028] Preferably, the drying chamber of the oven is connected to a hot air duct, and the air inlet of the hot air duct is connected to a hot air blower.

[0029] Preferably, the collecting hopper is processed into a funnel shape to facilitate the collection of solid impurities in the return gas into the return gas pipe.

[0030] This utility model provides a multi-segment air duct circulation structure for a curing drying tunnel:

[0031] By using the combined operation of the drying tunnel body, high-temperature fan, branch air ducts, exhaust screens, and return air ducts, the air in the drying oven is introduced into the drying tunnel body through the return air duct under the action of the high-temperature fan. As the airflow flows along the drying tunnel body, it disperses into different branch air ducts. The airflow is then discharged back into the drying oven through the exhaust screens in the branch air ducts for circulation. The hot air circulates in the drying oven, preventing the formation of local high-temperature and local low-temperature zones, ensuring that the workpiece is heated evenly and that it is easier for the workpiece to be dried in approximately the same amount of time. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the drying tunnel body, high-temperature fan, branch air duct, air outlet mesh plate, and return air duct of this utility model.

[0035] Figure 3 This is a schematic diagram of the structure of the return air duct, return air pipe, filter screen, and collection hopper in this utility model;

[0036] Figure 4 This is a schematic diagram of the structure of the oven, door panel, hot air pipe, and hot air blower in this utility model;

[0037] Figure 5 This is a structural schematic diagram of the bearing plate, sliding rod, suspension frame, and storage plate in this utility model;

[0038] Figure 6 This is a structural diagram of the central placement plate, sliding sleeve, and positioning pin of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Oven, 11-Door panel, 12-Hot air duct, 13-Hot air blower, 2-Oven body, 21-High temperature blower, 22-Branch air duct, 221-Outlet screen, 23-Return air duct, 231-Filter element, 231a-Return air duct, 231b-Filter screen, 231c-Collection hopper, 232-Adsorption element, 232a-Insert rod, 232b-Threaded cap, 232c-Activated carbon cylinder, 3-Storage assembly, 31-Bearing plate, 32-Slide rod, 321-Hanging frame, 322-Threaded joint, 33-Storage plate, 34-Connector, 341-Sliding sleeve, 342-Positioning pin. Detailed Implementation

[0041] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this embodiment, as Figure 1 and Figure 2As shown, a multi-segment air circulation structure for a curing oven includes: an oven 1; the multi-segment air circulation structure includes: an oven body 2, which is connected to the drying chamber of the oven 1, and a high-temperature fan 21 is installed at the air inlet end of the oven body 2; multiple branch air ducts 22, the air inlets of which are all connected to the oven body 2, and an air outlet mesh plate 221 is connected to the side of the multiple branch air ducts 22 away from the oven 1; the multiple branch air ducts 22 are evenly distributed based on the oven body 2 to evenly guide the hot air in the oven body 2 to the drying chamber of the oven 1; and a return air duct 23, the bottom end of which is fixedly connected to the oven 1, and the air outlet end of which passes through the oven 1 and is connected to the high-temperature fan 21.

[0045] Therefore, the high-temperature fan 21 is turned on, and the air in the oven 1 is introduced into the drying tunnel body 2 through the return air duct 23 under the action of the high-temperature fan 21. When the airflow flows along the drying tunnel body 2, the airflow is dispersed into different branch air ducts 22. The airflow is discharged back into the oven 1 through the air outlet mesh plate 221 in the branch air duct 22 for circulation. The hot air circulates in the oven 1 to prevent the phenomenon of local high temperature zone and local low temperature zone in the oven 1, so that the workpiece is heated evenly and it is beneficial for the workpiece to be dried in a similar time.

[0046] Specifically, the oven 1 is used to dry the workpiece, the drying tunnel body 2 is located at the top of the drying chamber of the oven 1, multiple branch air ducts 22 are designed and symmetrically distributed on both sides of the drying tunnel body 2, the air outlet mesh plate 221 is used to disperse the hot air in the branch air ducts 22, the return air duct 23 is located at the bottom of the drying chamber of the oven 1 and is set corresponding to the drying tunnel body 2, and the high temperature fan 21 is used to guide the air in the return air duct 23 to the drying tunnel body 2.

[0047] In some embodiments, such as Figure 3 As shown, the air inlet end of the return air duct 23 is equipped with a filter element 231, which is used to filter solid impurities in the return gas. The filter element 231 includes: a return air pipe 231a, which is threadedly connected to the air inlet end of the return air duct 23. The bottom end of the return air pipe 231a is equipped with a filter screen 231b, which is used to block solid impurities in the return gas. The top end of the return air pipe 231a is connected to a collection hopper 231c.

[0048] Specifically, the filter element 231 is designed with three sets. The external thread of the return air pipe 231a is adapted to the threaded hole at the top of the return air duct 23. The cavity of the return air pipe 231a can collect solid impurities blocked by the filter screen 231b. The inner wall of the collection hopper 231c is smooth, which facilitates the collection of solid impurities into the return air pipe 231a.

[0049] In some embodiments, such as Figure 4As shown, the inner cavity of the return air duct 23 is equipped with an adsorption element 232; the adsorption element 232 includes: an insertion rod 232a, one end of which extends into the inner cavity of the return air duct 23, and the other end of which is equipped with a threaded cap 232b, which is threadedly connected to the inner cavity of the return air duct 23; and an activated carbon cylinder 232c, which is connected to the outer periphery of the insertion rod 232a, and is used to adsorb heavy metal ions in the return gas;

[0050] Specifically, the insertion rod 232a is used to install the activated carbon cartridge 232c, which is used to adsorb heavy metal ions. The threaded cap 232b is adapted to the threaded hole on the side wall of the return air duct 23. The threaded cap 232b is used to fix the position of the insertion rod 232a in the return air duct 23. The detachable design of the threaded cap 232b makes it easy to replace the activated carbon cartridge 232c.

[0051] Furthermore, there is no specific limit to the number of adsorption components 232 used; they can be installed according to usage requirements.

[0052] In some embodiments, such as Figure 5 As shown, a storage assembly 3 is installed in the drying chamber of the oven 1; the storage assembly 3 includes: two support plates 31, one side of each support plate 31 is connected to the return air duct 23, and the other side of each support plate 31 is connected to the branch air duct 22; a slide rod 32, the top of which is fixedly connected to a suspension frame 321 for suspending workpieces, and the bottom of which is hinged to a threaded joint 322 for internal thread connection with the support plate 31; and a storage plate 33, which is connected to the slide rod 32 via a connector 34 and is used to support workpieces.

[0053] Specifically, each support plate 31 has two threaded holes that are compatible with the threaded connector 322. The support plate 31 also serves to connect the branch air duct 22 and the return air duct 23. The slide bar 32 is designed with four rods distributed at the four corners of the suspension frame 321. The shelf 33 is used to place workpieces with round holes flat.

[0054] In some embodiments, such as Figure 4 As shown, the connector 34 includes: a sliding sleeve 341, the outer periphery of which is fixedly connected to the shelf 33, and the sliding sleeve 341 is slidably connected to the slide rod 32; a positioning pin 342 is disposed in the sliding sleeve 341, and the sliding sleeve 341 is connected to the slide rod 32 through the positioning pin 342.

[0055] Specifically, when the position of the shelf 33 is adjusted vertically, the shelf 33 causes the sliding sleeve 341 to slide along the sliding rod 32. The outer wall of the positioning pin 342 is threaded, and the positioning pin 342 is used to fix the position of the sliding sleeve 341 on the sliding rod 32.

[0056] In some embodiments, such as Figure 5 As shown, the sliding sleeve 341 is symmetrically distributed based on the shelf 33;

[0057] Specifically, a sliding sleeve 341 is provided at each of the four corners of the shelf 33. The design of multiple sliding sleeves 341 is to increase the connection strength between the shelf 33 and the sliding rod 32.

[0058] In some embodiments, such as Figure 2 As shown, the shelf 33 has through holes evenly distributed in it, which are used for the circulation of hot air;

[0059] Specifically, through holes are machined in the shelf 33 to facilitate the circulation of hot air between the shelf 33.

[0060] In some embodiments, such as Figure 2 As shown, a door panel 11 is hinged to the side of the oven 1 away from the high-temperature fan 21. The door panel 11 is used to control the opening and closing of the oven 1.

[0061] Specifically, the door panel 11 is a component of the oven 1, and the door panel 11 controls the opening and closing of the oven 1 to load and unload workpieces.

[0062] In some embodiments, such as Figure 1 As shown, the drying chamber of the oven 1 is connected to a hot air pipe 12, and the air inlet of the hot air pipe 12 is connected to a hot air blower 13.

[0063] Specifically, the hot air generated by the hot air blower 13 is introduced into the oven 1 through the hot air pipe 12. The hot air blower 13 is a technology known to those skilled in the art and provides heat for drying in the oven 1.

[0064] In some embodiments, such as Figure 2 As shown, the collecting hopper 231c is processed into a trumpet shape to facilitate the collection of solid impurities in the return gas into the return gas pipe 231a.

[0065] Specifically, the number of collection hoppers 231c used is the same as the number of return air pipes 231a used. The funnel-shaped design of the collection hoppers 231c facilitates the gathering of hot air into the return air duct 23.

[0066] The working principle of this application is illustrated below with a preferred embodiment:

[0067] Place the hanging frame 321 parallel above the support plate 31, then rotate the threaded joint 322 at the bottom of the slide rod 32 to connect the slide rod 32 to the support plate 31 through the threaded joint 322. Hang the workpiece to be hung on the hanging frame 321, and place the workpiece to be laid flat on the shelf 33. After the workpiece is placed, close the door panel 11.

[0068] Turn on the high-temperature fan 21. Under the action of the high-temperature fan 21, the air in the oven 1 is introduced into the oven body 2 through the return air duct 23. When the airflow flows along the oven body 2, the airflow is dispersed into the branch air duct 22. The airflow is discharged back into the oven 1 through the air outlet mesh plate 221 in the branch air duct 22 for circulation. Then turn on the hot air fan 13. The hot air of the hot air fan 13 is introduced into the oven 1 through the hot air pipe 12. Then the hot air circulates in the oven 1 with the airflow, so that the hot air in the oven 1 circulates evenly.

[0069] As the hot air circulates in the oven 1 for an extended period, impurities will be mixed into the hot air. When the impurities enter the return air pipe 231a through the collection hopper 231c, the filter screen 231b at the bottom of the return air pipe 231a filters the solid impurities in the hot air. As the hot air that has undergone preliminary filtration enters the high-temperature fan 21 along the return air duct 23, the activated carbon cylinder 232c located in the return air duct 23 filters the impurities in the gas again.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-segment airflow circulation structure for a curing drying tunnel, comprising: The oven (1) is characterized in that the multi-section air duct circulation structure includes: The drying tunnel body (2) is connected to the drying chamber of the oven (1), and a high-temperature fan (21) is installed at the air inlet end of the drying tunnel body (2). Multiple branch air ducts (22) are provided, and the air inlet of each branch air duct (22) is connected to the drying tunnel body (2). Each branch air duct (22) is connected to an air outlet mesh plate (221) on the side away from the drying oven (1). The multiple branch air ducts (22) are evenly distributed based on the drying tunnel body (2) to uniformly guide the hot air in the drying tunnel body (2) to the drying chamber of the oven (1); The bottom end of the return air duct (23) is fixedly connected to the oven (1), and the outlet end of the return air duct (23) passes through the oven (1) and is connected to the high temperature fan (21).

2. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 1, characterized in that, The air inlet of the return air duct (23) is equipped with a filter element (231), which is used to filter solid impurities in the return gas; The filter element (231) includes: A return air pipe (231a) is threadedly connected to the air inlet end of the return air duct (23). A filter screen (231b) is provided at the bottom end of the return air pipe (231a). The filter screen (231b) is used to block solid impurities in the return gas. A collection hopper (231c) is connected to the top end of the return air pipe (231a).

3. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 1, characterized in that, The inner cavity of the return air duct (23) is equipped with an adsorption element (232); The adsorption element (232) includes: Insert rod (232a), one end of which extends into the inner cavity of the return air duct (23), and the other end of which is provided with a threaded cap (232b), which is threadedly connected to the return air duct (23). An activated carbon cylinder (232c) is connected to the outer periphery of the insertion rod (232a). The activated carbon cylinder (232c) is used to adsorb heavy metal ions in the reflux gas.

4. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 1, characterized in that, The drying chamber of the oven (1) is equipped with a storage assembly (3); The storage component (3) includes: Two support plates (31), one side of each support plate (31) is connected to the return air duct (23), and the other side of each support plate (31) is connected to the branch air duct (22); A slide rod (32) is fixedly connected to a suspension frame (321) at its top end. The suspension frame (321) is used to suspend the workpiece. A threaded joint (322) is hinged to the bottom end of the slide rod (32). The threaded joint (322) is internally threaded to the bearing plate (31). The shelf (33) is connected to the slide bar (32) via a connector (34) and is used to support the workpiece.

5. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 4, characterized in that, The connector (34) includes: Sliding sleeve (341), the outer periphery of which is fixedly connected to the shelf (33), and the sliding sleeve (341) is slidably connected to the sliding rod (32); The sliding sleeve (341) is provided with a positioning pin (342), and the sliding sleeve (341) is connected to the sliding rod (32) through the positioning pin (342).

6. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 5, characterized in that, The sliding sleeve (341) is symmetrically distributed based on the shelf (33).

7. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 4, characterized in that, The shelf (33) has through holes evenly distributed in it, which are used for the circulation of hot air.

8. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 1, characterized in that, The oven (1) has a door panel (11) hinged to the side away from the high-temperature fan (21), and the door panel (11) is used to control the opening and closing of the oven (1).

9. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 1, characterized in that, The drying chamber of the oven (1) is connected to a hot air pipe (12), and the air inlet of the hot air pipe (12) is connected to a hot air blower (13).

10. The multi-segment air duct circulation structure for a curing drying tunnel according to claim 2, characterized in that, The collecting hopper (231c) is processed into a trumpet shape to facilitate the collection of solid impurities in the return gas into the return gas pipe (231a).

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