Efficient powder coating drying device for coating processing

Abstract

The utility model is applicable to the technical field of drying devices, and provides an efficient powder coating drying device for coating processing, which comprises a drying box body, a feeding pipe is communicated with the top wall of the drying box body, a sleeve is vertically and fixedly mounted on the inner bottom wall of the drying box body, a hot air assembly is fixedly mounted in the sleeve, and the hot air assembly is used for conveying hot air into the drying box body; according to the device, external air is pumped and guided into the sleeve to be heated through the hot air assembly, then the heated hot air is blown into the heating cavities in the bottoms of the drying tables to heat the surfaces of the drying tables, then the hot air enters the drying box body, and the drying tables are heated through the hot air assembly. When the powder falls down from the discharging groove in the material guide plate, the powder firstly falls onto the surface of the drying table and uniformly rolls down along the inclined surface of the drying table, the powder is in contact with the heated surface of the drying table in the rolling-down process, and residual moisture in the powder is evaporated through the drying table.

Description

TECHNICAL FIELD

[0001] The utility model belongs to drying device technical field, especially relate to a powder coating high -efficient drying device for coating processing. BACKGROUND

[0002] With people's increasing demand for health and environmental protection, although the traditional carboxyl polyester / TGIC (triglycidyl isocyanurate) system is uniform, stable and adjustable, has good heat resistance and weather resistance and can basically meet the requirements of users, but its strong irritating odor and potential carcinogenicity make it inevitable to withdraw from the market. Hydroxyalkyl amide compound is a recognized low-toxicity and environmentally friendly compound, which is now widely used in daily chemicals, surfactants and coating fields. At present, the hydroxyalkyl amide system has gradually replaced carboxyl polyester / TGIC to become the main component of outdoor powder coating system.

[0003] The utility model discloses a kind of drying devices for high-efficiency powder coating production, including drying bin, the outside of the drying bin is equipped with feeding opening, the inside of the drying bin is provided with processing assembly, the front of the drying bin is provided with control panel, the outside of the drying bin is fixedly connected with support, the lower end of the drying bin is communicated with discharge pipe, the processing assembly includes heating bin with one end and the inner bottom wall of drying bin fixed connection.The high-efficiency drying device for powder coating production, the driving motor of start drives the rotation of rotating rod, and also can be followed by rotating through sleeve and fan blade, and after starting heating wire heating, the powder coating in drying bin can be agitated, and also can be heated, and the electric telescopic rod of start can drive vertical rod and stirring rod rotation, and also can move up and down, to agitate powder coating vertically, to improve powder coating heating area, shorten drying time, improve drying effect and efficiency.

[0004] However, the above device has the following technical problems in actual use:

[0005] I. The above device heats the air blown in by the fan through the heating wire, and then the hot air enters the stirring rod through the flow channel. The stirring rod in contact with the powder transfers heat to the powder, thereby achieving the heat drying of the powder. Although this method can achieve the drying of the powder, the heat transfer efficiency is low, and the above device needs to work for a long time, and the processing time is long.

[0006] II. In the actual stirring process of the above device, the powder is still in a stacked state, and although it is stirred, it cannot achieve a large stirring capacity. The heat cannot be quickly transferred to all positions of the powder, and the stirring efficiency is low. UTILITY MODEL CONTENTS

[0007] The utility model provides a kind of powder coating high-efficiency drying device for coating processing, to solve the above-mentioned device in the above-mentioned background art mentioned above although hot air can be transmitted to stirring rod, but the heat transfer efficiency of this kind of mode is lower, and equipment needs to be processed for a long time, and the powder in the above-mentioned device is still in the state of accumulation when drying, although it can realize the agitation of powder by stirring, but the agitation amplitude is low, and heat cannot be quickly and effectively transferred to each powder, which affects the drying efficiency.

[0008] The utility model is realized, a kind of powder coating high-efficiency drying device for coating processing, comprising: drying box body, its top wall is communicated with feed pipe, and fixedly installed with sleeve pipe on the inner bottom wall vertical, fixedly installed with hot blast assembly in the sleeve pipe, the hot blast assembly is used to send hot air into the drying box body, the top of the sleeve pipe is fixed with drying table by a plurality of connecting columns, stirring mechanism, it has: stirring assembly, it is rotatably connected on the inner circumferential wall of the drying box body, and movably connected with drive assembly, the drive assembly is used to drive the stirring assembly to rotate horizontally on the outside of the sleeve pipe, and, at least one installation box body arranged on the side wall of the drying box body, the installation box body is communicated with the drying box body, and its inner rotation is connected with reflux component, the reflux component is used to suck powder from the installation box body, and then reflows the powder into the drying box body from the top of the installation box body;In this scheme, the device heats the ambient air to the sleeve pipe by hot blast assembly, then the hot air after heating is first blown into the heating cavity at the bottom of drying table, to heat the surface of drying table, then the hot air enters the drying box body, when the powder falls from the discharge slot on the guide plate, it first falls on the surface of drying table, and evenly rolls down the inclined surface of drying table, the powder contacts the heated surface of drying table during rolling, and the moisture in the powder is evaporated by drying table.

[0009] In addition, subsequent powder moves into the drying box body outside the sleeve pipe, and hot air also flows into the drying box body through the hot blast passage between drying table and sleeve pipe, the stirring assembly is controlled to rotate horizontally around the sleeve pipe by the drive assembly, and the powder is stirred by the stirring assembly, so that the powder is effectively dried.

[0010] Moreover, the device is also provided with reflux component, when powder drying operation is carried out, feeding motor drives screw conveying rod to rotate, the screw conveying rod continuously draws powder from bottom feed port, and discharges it through discharge port, the discharged powder falls on the guide plate, and falls on drying table again through discharge slot for secondary drying treatment, effectively improving the drying efficiency of powder.

[0011] Preferably, the stirring assembly comprises: an annular guide rail fixed around the inner side wall of the drying box body, an annular plate rotatably connected to the inner side of the annular guide rail, at least two extension plates fixedly installed on the inner circumferential wall of the annular plate in a symmetrical manner, a stirring shaft fixedly installed at the bottom of each extension plate, and a plurality of stirring groups fixedly attached to the outer wall of the stirring shaft along its length at equal intervals, each stirring group comprising a plurality of stirring rods arranged around the outer wall of the stirring shaft; in this scheme, the annular plate is rotatably connected to the inner side of the annular guide rail, and the annular plate can rotate horizontally by 360 degrees, thereby driving the two extension plates on the inner circumferential wall to rotate, and the extension plates drive the stirring shaft to rotate around the sleeve, the bottom end of the stirring shaft extends towards the inner bottom wall of the drying box body, and a plurality of stirring groups are arranged on the outer wall of the stirring shaft corresponding to one side of the sleeve, when the stirring shaft rotates around the sleeve, the stirring rods can stir the powder, so that it is in full contact with the hot air in the drying box body, thereby improving the drying efficiency.

[0012] Preferably, the driving assembly comprises: a connecting seat fixedly installed on the inner side wall of the drying box body, a driving motor fixedly installed on the connecting seat, a driving gear fixedly attached to the output end of the driving motor, an annular gear ring fixedly installed around the inner circumferential wall of the annular plate, the annular gear ring being located above the extension plate and being in meshing connection with the driving gear; in this scheme, when the output end of the driving motor rotates, it controls the rotation of the driving gear, and the driving gear drives the annular gear ring in meshing connection to displace, since the annular gear ring is fixedly installed on the inner circumferential wall of the annular plate, it drives the annular plate to rotate under the support of the annular guide rail, thereby controlling the stirring shaft to rotate around the sleeve.

[0013] Preferably, the hot air assembly comprises: a fixed plate fixedly attached to the inside of the sleeve, a rotating motor fixedly attached to the bottom of the fixed plate, a fan blade provided on the output end of the rotating motor, an electric heating wire provided on the inner wall of the sleeve above the fixed plate, the drying table being in the shape of a truncated cone, a heating cavity being formed in the bottom wall, and a hot air passage being reserved between the bottom of the drying table and the top of the sleeve for the hot air to flow into the drying box body; the output end of the rotating motor works to drive the fan blade to rotate, and the fan blade rotates to draw external air into the drying box body through the sleeve, and the electric heating wire is connected to the external power supply to generate heat when the rotating motor works, thereby heating the air flowing through.

[0014] It should be explained that the bottom of the drying table is provided with a heating cavity facing the sleeve, when the hot air is blown upwards, it enters the heating cavity, and the contact between the hot air and the heating cavity continuously increases the surface temperature of the drying table, so as to facilitate the evaporation of the moisture contained in the powder when it contacts the powder later, and the subsequent hot air flows into the drying box body through the hot air passage reserved between the drying table and the sleeve.

[0015] Preferably, the return assembly comprises: the installation box bottom end side wall is provided with a feeding port between the drying box, and the top end side wall is provided with a discharging port between the drying box, the spiral conveying rod is rotatably connected in the installation box, the top wall of the installation box is fixedly connected with a feeding motor, and the output end of the feeding motor is fixedly connected with the top end of the spiral conveying rod; in this scheme, when the powder is transported into the installation box through the feeding port during the drying process, the feeding motor controls the spiral conveying rod to rotate to lift the powder, and the lifted powder is discharged through the discharging port and falls into the drying box again.

[0016] Preferably, a guide plate is further fixedly installed on the inner wall of the drying box above the stirring mechanism, the guide plate is funnel-shaped and the middle part is concave downward, a discharging groove is formed in the middle part of the guide plate, and the discharging groove is correspondingly arranged above the drying table; in this scheme, the powder discharged through the discharging port falls on the guide plate and rolls to the discharging groove position along the inclined surface of the guide plate, and then is discharged through the discharging groove and falls on the drying table below.

[0017] Compared with the prior art, the powder coating high-efficiency drying device for coating processing has the advantages that:

[0018] 1. The hot air assembly of the device can heat the air in the sleeve, and then the heated hot air is blown into the heating cavity at the bottom of the drying table to heat the surface of the drying table, and then the hot air enters the drying box, so that when the powder falls from the discharging groove of the guide plate, the powder first falls on the surface of the drying table and rolls down the inclined surface of the drying table, and the powder contacts the heated surface of the drying table during the rolling process to evaporate the residual moisture in the powder.

[0019] 2. The device is also provided with a return assembly, and when the powder drying operation is performed, the feeding motor drives the spiral conveying rod to rotate, the spiral conveying rod continuously draws the powder from the bottom feeding port and discharges it through the discharging port, and the discharged powder falls on the guide plate and falls on the drying table again through the discharging groove for secondary drying treatment, effectively improving the drying efficiency of the powder. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the utility model;

[0021] Figure 2 It is a front view of the utility model Figure 1 It is an enlarged view of structure A in the utility model;

[0022] Figure 3 It is a schematic view of the drying box in the utility model;

[0023] In the drawings:

[0024] 1, drying box; 11, feeding pipe; 12, sleeve; 13, drying table; 131, heating cavity; 14, mounting box;

[0025] 2, hot air assembly; 21, fixed plate; 22, rotating motor; 23, fan blade; 24, heating wire;

[0026] 3, stirring mechanism; 31, stirring assembly; 311, annular guide rail; 312, annular plate; 313, extension plate; 314, stirring shaft; 315, stirring rod; 32, driving assembly; 321, connecting seat; 322, driving motor; 323, driving gear; 324, annular gear ring;

[0027] 4, backflow assembly; 41, feeding port; 42, discharging port; 43, spiral conveying rod; 44, feeding motor; 45, guide plate; 451, discharging groove. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0029] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application.

[0030] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, 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 limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through the intermediate medium, can be two elements inside the communication. 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.

[0033] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a kind of powder coating high-efficiency drying device for coating processing, comprising: drying box 1, its top wall is communicated with feed pipe 11, and fixedly installed with sleeve pipe 12 on inner bottom wall, hot air assembly 2 is fixedly installed in sleeve pipe 12, hot air assembly 2 is used to deliver hot air to drying box 1, the top of sleeve pipe 12 is spaced apart with drying table 13 by a plurality of connecting columns, stirring mechanism 3, it has: stirring assembly 31, it is rotatably connected on the inner wall of drying box 1, and movably connected with driving assembly 32, driving assembly 32 is used to drive stirring assembly 31 to rotate horizontally on the outside of sleeve pipe 12, and, at least one installation box 14 is arranged on the side wall of drying box 1, installation box 14 is communicated with drying box 1, and its inner rotation is connected with reflux assembly 4, reflux assembly 4 is used to suck powder from installation box 14, and then reflows powder into drying box 1 from the top of installation box 14.

[0034] Specifically, the bottom of the device is also communicated with at least two discharge pipes, one end of the discharge pipe is communicated with external collection equipment, and a first control valve is fixedly installed on the discharge pipe, when the device is drying, the first control valve is closed, and when drying is finished, the first control valve is opened, and the powder is discharged into the external collection equipment through the discharge pipe.

[0035] In addition, a second control valve is also provided at the feed inlet 41 in the device, when the second control valve is opened, the powder will enter the inside of the installation box 14 through the feed inlet 41, so that the spiral conveying rod 43 can lift the powder.

[0036] Further, the stirring assembly 31 comprises: an annular guide rail 311 fixedly connected to the inner circumferential wall of the drying box 1, a rotatingly connected annular plate 312 is arranged on the inner side of the annular guide rail 311, at least two extension plates 313 are fixedly installed on the inner circumferential wall of the annular plate 312 in a symmetrical manner, a stirring shaft 314 is fixedly installed on the bottom of each extension plate 313, and a plurality of stirring pieces are fixedly connected to the outer wall of the stirring shaft 314 at equal intervals along the length of the stirring shaft 314, and each set of stirring pieces comprises a plurality of stirring rods 315 arranged around the outer wall of the stirring shaft 314.

[0037] Specifically, the annular guide rail 311 comprises: an annular support fixedly installed on the inner wall of the drying box body 1, a protruding ring is integrally formed on the inner side circumferential wall of the annular support, and an annular groove is formed on the outer side circumferential wall of the annular plate 312; the protruding ring is slidably connected in the annular groove, which can effectively ensure that the annular plate 312 does not separate from the annular guide rail 311 during rotation.

[0038] Further, the driving assembly 32 comprises: a connecting seat 321 fixedly installed on the inner side wall of the drying box body 1, a driving motor 322 fixedly installed on the connecting seat 321, a driving gear 323 fixedly connected to the output end of the driving motor 322, an annular gear ring 324 fixedly installed on the inner side circumferential wall of the annular plate 312, and the annular gear ring 324 is located above the extension plate 313 and is in meshing connection with the driving gear 323.

[0039] Specifically, a rotary motor can be fixedly installed on each extension plate 313, the output end of the rotary motor is fixedly connected to the end portion of the stirring shaft 314, and the rotary motor output end can control the stirring shaft 314 to rotate, so as to realize the full-range stirring and mixing of the powder by cooperation of the revolution of the annular plate 312.

[0040] Further, the hot air assembly 2 comprises: a fixed plate 21 fixedly connected to the inside of the sleeve 12, a rotating motor 22 fixedly connected to the bottom of the fixed plate 21, a fan blade 23 arranged on the output end of the rotating motor 22, an electric heating wire 24 arranged on the inner wall of the sleeve 12 located above the fixed plate 21, and the drying table 13 is in the shape of a truncated cone and is provided with a heating cavity 131 on the bottom wall; a hot air passage is reserved between the bottom of the drying table 13 and the top of the sleeve 12 for the hot air to flow into the drying box body 1.

[0041] Further, the return flow assembly 4 comprises: a feeding port 41 arranged between the bottom end side wall of the installation box body 14 and the drying box body 1, and a discharging port 42 arranged between the top end side wall of the installation box body 14 and the drying box body 1; a spiral conveying rod 43 is rotatably connected to the installation box body 14 which is vertically arranged in the installation box body 14; a feeding motor 44 is fixedly connected to the top wall of the installation box body 14, and the output end of the feeding motor 44 is fixedly connected to the top end of the spiral conveying rod 43.

[0042] Further, a guide plate 45 is fixedly installed on the inner wall of the drying box body 1 above the stirring mechanism 3, the guide plate 45 is in the shape of a funnel and is concave in the middle portion, a discharging groove 451 is formed in the middle portion of the guide plate 45, and the discharging groove 451 is arranged above the drying table 13.

[0043] The working principle and use process of the utility model are as follows:

[0044] The powder is put into the drying box 1 by the feeding pipe 11, and falls on the guide plate 45 and then falls into the drying table 13 through the chute 451, while the fan blade 23 is rotated by the driving motor 22, and the air outside the sleeve 12 is drawn into the sleeve 12 and then heated by the heating wire 24 and blown into the heating cavity 131, so that the drying table 13 is heated, and the powder falling on the drying table 13 is first evaporated to evaporate part of the water;

[0045] Then, the driving motor 322 drives the ring plate 312 to rotate through the driving gear 323 and the ring gear 324, and the stirring shaft 314 and the stirring rod 315 are rotated outside the sleeve 12, so that the powder is stirred and fully contacted with the hot air;

[0046] At the same time, part of the powder enters the installation box 14 through the feeding port 41, and the feeding motor 44 drives the spiral conveying rod 43 to rotate and lift the powder, and the lifted powder is discharged through the discharge port 42 and falls on the guide plate 45, and then falls on the drying table 13 through the chute 451 to complete the circulation of the powder, so as to speed up the drying efficiency of the powder.

[0047] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency powder coating drying device for coating processing, characterized in that: include: The drying chamber (1) has a feed pipe (11) connected to its top wall and a sleeve (12) fixedly installed vertically on its inner bottom wall. A hot air assembly (2) is fixedly installed inside the sleeve (12) and the hot air assembly (2) is used to deliver hot air to the drying chamber (1). The top end of the sleeve (12) is fixedly connected to a drying table (13) at intervals by multiple connecting posts; The stirring mechanism (3) has the following features: A stirring assembly (31) is rotatably connected to the inner peripheral wall of the drying chamber (1) and is movably connected to a driving assembly (32). The driving assembly (32) is used to drive the stirring assembly (31) to rotate horizontally circumferentially outside the sleeve (12). In addition, at least one mounting box (14) is disposed on the side wall of the drying chamber (1), the mounting box (14) is connected to the drying chamber (1), and a reflux assembly (4) is rotatably connected therein, the reflux assembly (4) is used to draw powder from the mounting box (14) and then return the powder to the drying chamber (1) from the top of the mounting box (14).

2. The powder coating high-efficiency drying device for coating processing as described in claim 1, characterized in that: The stirring assembly (31) includes: A ring-shaped guide rail (311) is fixed to the inner peripheral wall of the drying chamber (1), and a ring plate (312) is rotatably connected to the inner side of the ring-shaped guide rail (311). At least two extension plates (313) are symmetrically fixedly installed on the inner peripheral wall of the annular plate (312). A stirring shaft (314) is fixedly installed at the bottom of each extension plate (313). Multiple sets of stirring components are fixedly connected to the outer wall of the stirring shaft (314) at equal intervals along its length. Each set of stirring components has multiple stirring rods (315) arranged around the outer wall of the stirring shaft (314).

3. The high-efficiency powder coating drying device for coating processing as described in claim 2, characterized in that: The driving component (32) includes: A connecting seat (321) is fixedly installed on the inner side wall of the drying chamber (1). A drive motor (322) is fixedly installed on the connecting seat (321), and a drive gear (323) is fixedly connected to its output end. An annular gear ring (324) is fixedly mounted around the inner peripheral wall of the annular plate (312). The annular gear ring (324) is located above the extension plate (313) and meshes with the drive gear (323).

4. The powder coating high-efficiency drying device for coating processing as described in claim 1, characterized in that: The hot air assembly (2) includes: A fixing plate (21) is fixed inside the sleeve (12). A rotating motor (22) is fixed to the bottom of the fixing plate (21), and a fan blade (23) is provided on its output end. An electric heating wire (24) is provided on the inner wall of the sleeve (12) above the fixing plate (21). The drying table (13) is truncated cone-shaped and has a heating chamber (131) on its bottom wall. A hot air channel for supplying hot air to the drying box (1) is reserved between the bottom of the drying table (13) and the top of the sleeve (12).

5. The high-efficiency powder coating drying device for coating processing as described in claim 1, characterized in that: The recirculation component (4) includes: A feed inlet (41) is provided between the bottom side wall of the mounting box (14) and the drying box (1), and a discharge outlet (42) is provided between the top side wall and the drying box (1). The mounting box (14) is vertically connected to a rotating spiral conveyor rod (43). A feeding motor (44) is fixedly connected to the top wall of the mounting box (14), and its output end is fixedly connected to the top end of the spiral conveyor rod (43).

6. The powder coating high-efficiency drying device for coating processing as described in claim 5, characterized in that: A guide plate (45) is also fixedly installed on the inner wall of the drying box (1) located above the stirring mechanism (3). The guide plate (45) is funnel-shaped and recessed in the middle. A discharge trough (451) is opened in the middle of the guide plate (45), and the discharge trough (451) is correspondingly arranged above the drying table (13).

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