A nano-coating drying device

Abstract

The present invention provides a drying device for nano coatings, which relates to the technical field of coating drying. It includes a tower body and a vertical screw conveyor. The lower part of the tower body is provided with a bottom plate. The vertical screw conveyor includes a feeding pipe and a rotating shaft. A conical flow guide cover is arranged between the feeding pipe and the bottom plate. An upper part of the flow guide cover is connected with a partition cylinder. A feeding channel is left between the lower end of the partition cylinder and the flow guide cover. A spiral flow guide plate is arranged on the inner wall of the partition cylinder, and a disperser is installed on the rotating shaft. The present invention adopts the method of feeding from the bottom, which can reduce the intersection of the nano coatings to be dried entering the tower body and the nano coatings that have been dried and rise with the hot air, reduce the collision and adhesion between the two, is beneficial to reducing the obstruction to the rise of the dried nano coatings with the hot air, is beneficial to reducing the situation of over-drying, and at the same time, the physical separation function of the partition cylinder can isolate the nano coatings to be dried and the nano coatings that have been dried, which is beneficial to improving the drying uniformity.

Description

Technical Field

[0001] The present invention relates to the technical field of paint drying, and particularly to a nano-paint drying device. Background Art

[0002] Nano-paints are generally composed of nano-materials and organic paints, and their preparation methods include sol-gel method, in-situ polymerization method, intercalation polymerization method, blending method, etc. In these preparation methods, drying is generally required to remove the moisture in the paint so that its humidity and particle size meet the technical requirements.

[0003] The flash dryer is one of the commonly used drying equipment and operates in a continuous feeding manner. First, the wet material is fed into the dryer through a screw feeder, and the agitator breaks up the wet material. Under the lift of the hot air at the bottom, the material is in a fluidized bed state. Subsequently, large pieces of material or undried material are ground or crushed by the crushing component at the bottom under the action of gravity. The ground or crushed material is dried and driven to the classification area at the top. The fine powder with qualified particle size and humidity is separated by a cyclone separator and collected by a bag filter, and the gas is discharged by a draft fan.

[0004] For example, the patent application document with the publication number CN118517894A discloses a rotary flash dryer and a drying method for the production of chlorinated polyethylene. The material enters the inner cylinder from the feed port at the lower end of the inner cylinder, is conveyed by a screw conveyor, falls from the discharge port at the upper end of the inner cylinder into the drying chamber, and contacts the high-temperature air flow in the drying chamber for drying.

[0005] When drying nano-paints with the above dryer, since the nano-paints to be dried are in a continuous feeding dynamic process, when the nano-paints to be dried fall from the discharge port at the upper end of the inner cylinder into the drying chamber, the dried nano-paints in the drying chamber rise under the lift of the hot air. The dried nano-paints in the drying chamber will intersect with the nano-paints to be dried, and the nano-paints to be dried will collide with or adhere to the dried nano-paints, resulting in the dried nano-paints not being able to rise with the hot air in time and prolonging their drying time in the dryer, thereby causing the phenomenon of over-drying. Summary of the Invention

[0006] In view of this, the present invention provides a nano-paint drying device to solve the technical problem in the prior art that the nano-paints to be dried collide with or adhere to the dried nano-paints and hinder the dried nano-paints from rising with the hot air, resulting in over-drying.

[0007] To solve the above technical problems, the present invention provides a nano-coating drying device, which includes a tower body and a vertical screw conveyor arranged inside the tower body. The lower part of the tower body is provided with a bottom plate. The vertical screw conveyor includes a feed pipe passing through the bottom plate and a rotating shaft rotatably arranged inside the feed pipe. The upper end of the feed pipe is provided with a discharge port;

[0008] A conical guide cover is arranged between the feed pipe and the bottom plate. The upper part of the guide cover is connected with a partition cylinder. The discharge port is located inside the partition cylinder. The partition cylinder has a top plate and a side wall. There is a blanking channel left between the lower end of the side wall and the guide cover;

[0009] A spiral guide plate is arranged on the inner wall of the side wall. The rotating shaft passes through the top plate and is rotatably connected with the top plate. A disperser is installed on the rotating shaft. The disperser is located between the discharge port and the top plate.

[0010] By adopting the above technical solution, a vertical screw conveyor is arranged at the bottom of the tower body for feeding. After the nano-coating to be dried is output from the discharge port, it falls between the feed pipe and the partition cylinder and then falls to the bottom of the tower body through the blanking channel. The hot air in the tower body dries it, and the dried nano-coating rises under the lift of the hot air. This bottom feeding method can change the path and mode of the nano-coating entering the tower body, reduce the intersection of the nano-coating to be dried entering the tower body and the dried nano-coating rising with the hot air, reduce the collision and adhesion between the two, which is beneficial to reducing the obstruction to the dried nano-coating rising with the hot air, and further beneficial to reducing the situation of its over-drying.

[0011] At the same time, the conical guide cover guides and adjusts the flow direction of the nano-coating. On this basis, through the physical separation effect of the partition cylinder, the newly incoming nano-coating to be dried and the later dried nano-coating can be effectively separated, which is beneficial to the newly incoming nano-coating to be dried without interference, thereby improving the drying uniformity and reducing the occurrence of over-drying phenomenon. At the same time, the partition cylinder can also block the newly incoming materials to avoid the materials being directly blown to the grading area at the upper part of the tower body by the hot air when the humidity is relatively high, which may block the grading area and affect the grading effect. The disperser is beneficial to initially disperse the nano-coating entering the partition cylinder, reduce the agglomeration of the nano-coating, and reduce the nano-coating adhering to the top plate, and generate a centrifugal force, which is beneficial to evenly falling the nano-coating on the guide plate. Cooperating with the guiding effect of the guide plate, the nano-coating orderly falls into the blanking channel, reducing the adhesion caused by the collision between the nano-coatings to be dried and reducing the agglomeration of the nano-coating, which is beneficial to improving the drying uniformity.

[0012] Preferably, a plurality of concentric rotary grinding rings are arranged at intervals above the top plate on the rotary shaft, and there is an interval one between adjacent two rotary grinding rings; a plurality of concentric fixed grinding rings are arranged at intervals in the tower body, and there is an interval two between adjacent two fixed grinding rings; the rotary grinding ring can be inserted into the interval two and the fixed grinding ring can be inserted into the interval one, and there is a discharge channel between the rotary grinding ring and the fixed grinding ring.

[0013] By adopting the above technical solutions, on the one hand, the rotary grinding ring can effectively block large-particle nano coatings. During the process of the large-particle nano coatings rising with the hot air, due to the blocking of the rotary grinding ring, their kinetic energy will be weakened and they will return to the crushing area for re-crushing, which is beneficial to reducing the mixing of large-particle nano coatings into the dried finished products; on the other hand, during the relative movement of the rotary grinding ring and the fixed grinding ring, the medium-sized nano coatings can be ground to further refine the particles, which is beneficial to improving the consistency of the particle size of the nano coatings. In addition, due to the rotation of the rotary grinding ring, the problem of frequent material blockage that often occurs during the filtration of traditional filter meshes can be effectively avoided when the nano coatings pass through. This dynamic grinding and filtration mechanism has significant advantages over the traditional static filtration method in terms of improving the drying efficiency and ensuring the particle uniformity.

[0014] Preferably, the cross-sections of the rotary grinding ring and the fixed grinding ring are both trapezoidal, and the width of the discharge channel decreases successively from bottom to top.

[0015] By adopting the above technical solutions, it is beneficial to increase the threshold of the particle size of the medium-sized nano coatings to be ground, which is beneficial to improving the grinding efficiency and thus beneficial to improving the drying efficiency.

[0016] Preferably, a stirring frame is installed on the rotary shaft. The stirring frame is located between the top plate and the rotary grinding ring. The end of the stirring frame is provided with downwardly inclined stirring blades, and a rotary ring is installed at the lower part of the stirring blades. The rotary ring is rotatably connected to the outer wall of the side wall.

[0017] By adopting the above technical solutions, due to the blocking of the rotary grinding ring, during the falling process of the large-particle nano coatings, the stirring blades break them, which is beneficial to improving the crushing efficiency and thus beneficial to improving the drying efficiency.

[0018] Preferably, a plurality of convex shafts are installed on the outer wall of the side wall at the position of the rotary ring, and a plurality of spring pins that can abut against the convex shafts are arranged in the rotary ring.

[0019] By adopting the above technical solutions, during the rotation of the rotary ring following the stirring frame, the spring pins are driven to intermittently abut against the convex shafts, thereby vibrating the side wall. On the one hand, it reduces the nano coatings adhering to the side wall. On the other hand, the side wall drives the flow guide plate to vibrate, which is beneficial to the flow guide plate to cooperate with the disperser to disperse the nano coatings, thus beneficial to improving the drying efficiency.

[0020] Preferably, a rotating frame is installed below each of the plurality of rotating grinding rings, the rotating frame is installed on a rotating shaft, a fixed frame is installed above each of the plurality of fixed grinding rings, and the fixed frame is fixedly connected to the tower body.

[0021] By adopting the above technical solution, the rotating shaft drives the rotating frame to rotate, and then drives the rotating grinding ring to rotate, which can grind medium-sized nano coatings and further refine the particles, which is beneficial to improving the consistency of the particle size of the nano coatings.

[0022] Preferably, a horizontal screw conveyor is provided on one side of the vertical screw conveyor. The horizontal screw conveyor includes a feed cylinder, the outlet end of the feed cylinder is communicated with the lower part of the feed pipe, and a feed hopper is provided on the feed cylinder.

[0023] By adopting the above technical solution, the nano coatings to be dried are conveyed by the horizontal screw conveyor and then conveyed into the tower body by the vertical screw conveyor for drying.

[0024] Preferably, a hot air blower is provided on one side of the tower body. An air outlet pipe is connected to the hot air blower, and the air outlet pipe sequentially penetrates through the tower body and the partition cylinder and is connected to the upper part of the feed pipe.

[0025] By adopting the above technical solution, the hot air preliminarily dries the nano coatings in the upper part of the feed pipe and in the partition cylinder. Compared with drying inside the drying tower, it is beneficial to concentrate the heat and improve the drying efficiency; at the same time, it is beneficial to cooperate with the vertical screw conveyor to increase the rising height of the nano coatings in the partition cylinder, which is beneficial to increasing the materials dispersed by the disperser and beneficial to improving the drying efficiency.

[0026] The beneficial effects of the above technical solutions of the present invention are as follows:

[0027] 1. The bottom feeding method adopted by the present invention can change the path and method of the nano coatings entering the tower body, reduce the intersection of the nano coatings to be dried entering the tower body and the dried nano coatings rising with the hot air, reduce the collision and adhesion between the two, which is beneficial to reducing the obstruction to the dried nano coatings rising with the hot air, and then beneficial to reducing the situation of over-drying. At the same time, the physical separation effect of the partition cylinder can effectively isolate the newly incoming nano coatings to be dried and the later dried nano coatings, which is beneficial to reducing the influence of the nano coatings to be dried on the dried nano coatings, thereby improving the drying uniformity.

[0028] 2. The disperser is conducive to initially dispersing the nano-coating entering the separation cylinder, reducing the agglomeration of the nano-coating, and reducing the nano-coating adhering to the top plate. Moreover, it generates centrifugal force, which is conducive to evenly falling the nano-coating on the deflector. With the guiding effect of the deflector, the nano-coating orderly falls into the blanking channel, reducing the adhesion caused by the collision between the nano-coatings to be dried, and is conducive to improving the drying uniformity.

[0029] 3. In the present invention, a rotating grinding ring and a fixed grinding ring are arranged in the tower body. On the one hand, it can block large-particle nano-coatings and make them return to the crushing area for re-crushing, thus being conducive to reducing the mixing of large-particle nano-coatings into the dried finished products. On the other hand, during the relative movement of the rotating grinding ring and the fixed grinding ring, it can grind medium-sized nano-coatings, further refining the particles, and is conducive to improving the consistency of the particle size of the nano-coating.

[0030] 4. While the stirring frame of the present invention breaks large-particle nano-coatings, it drives the spring pin to intermittently abut against the convex shaft, thereby vibrating the side wall of the separation cylinder. On the one hand, it reduces the nano-coating adhering to the side wall. On the other hand, the side wall drives the deflector to vibrate, which is conducive to the deflector cooperating with the disperser to disperse the nano-coating, thus being conducive to improving the drying efficiency. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the nano-coating drying device of the present invention;

[0032] Figure 2 is a cross-sectional view of the nano-coating drying device of the present invention;

[0033] Figure 3 is an exploded view of the fixed grinding ring and the rotating grinding ring of the present invention;

[0034] Figure 4 is a cross-sectional view of the fixed grinding ring and the rotating grinding ring of the present invention;

[0035] Figure 5 is a schematic structural diagram of the connection of the stirring frame, the separation cylinder and the deflector cover of the present invention;

[0036] Figure 6 is a cross-sectional view of the separation cylinder of the present invention.

[0037] In the figure: 1. Tower body; 11. Bottom plate; 12. Discharge port; 2. Vertical screw conveyor; 21. Feeding pipe; 211. Outlet; 22. Rotating shaft; 221. Screw blade; 222. Disperser; 223. Stirring frame; 224. Stirring blade; 225. Rotating ring; 226. Convex shaft; 227. Spring pin; 23. First driving motor; 24. Flow guide cover; 241. Connecting rod; 25. Partition cylinder; 251. Top plate; 252. Side wall; 253. Flow guide plate; 26. Feeding channel; 27. Rotating frame; 271. Rotating grinding ring; 272. First interval; 28. Fixed frame; 281. Fixed grinding ring; 282. Second interval; 3. Horizontal screw conveyor; 31. Feeding cylinder; 32. Rotating shaft; 33. Second driving motor; 34. Feeding hopper; 4. Hot air blower; 41. Air outlet pipe. Detailed implementation mode

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely below. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention. Figures 1-6 Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of the present invention.

[0039] Embodiment

[0040] This embodiment provides a nano-coating drying device, as Figure 1 shown, including a tower body 1, a vertical screw conveyor 2, a horizontal screw conveyor 3 and a hot air blower 4.

[0041] As Figure 2 shown, a bottom plate 11 is provided at the lower part of the tower body 1, and a discharge port 12 is provided at the upper part of the tower body 1.

[0042] As Figure 2 shown, the vertical screw conveyor 2 includes a feeding pipe 21, a rotating shaft 22 and a first driving motor 23.

[0043] As Figure 2 shown, the axis of the feeding pipe 21 extends in the up and down direction. The upper part of the feeding pipe 21 penetrates through the bottom plate 11, and an outlet 211 is provided at the upper end of the feeding pipe 21. The rotating shaft 22 is rotatably arranged in the feeding pipe 21, and the axis of the rotating shaft 22 is collinear with the axis of the feeding pipe 21. A screw blade 221 is provided on the part of the rotating shaft 22 located in the feeding pipe 21. The first driving motor 23 is arranged at the lower part of the rotating shaft 22 and drives the rotating shaft 22 to rotate.

[0044] As Figure 2 and Figure 5As shown, a conical air guide hood 24 is provided between the feed pipe 21 and the bottom plate 11. The air guide hood 24 is inclined downward from an end close to the feed pipe 21 to an end away from the feed pipe 21. Connecting rods 241 are provided on the air guide hood 24 at intervals. A separating cylinder 25 is connected to the upper part of the connecting rod 241. The discharge port 211 is located inside the separating cylinder 25. The separating cylinder 25 has a top plate 251 and a side wall 252. The top plate 251 is arranged to be conical. A discharge channel 26 is left between the lower end of the side wall 252 and the air guide 24.

[0045] like Figure 2 As shown, a spiral guide plate 253 is provided on the inner wall of the side wall 252 , the rotating shaft 22 passes through the top plate 251 and is rotatably connected to the top plate 251 , and a disperser 222 is installed on the rotating shaft 22 , and the disperser 222 is located between the discharge port 211 and the top plate 251 .

[0046] like Figure 2 As shown, the nano coating to be dried is transported to the discharge port 211 by the vertical screw conveyor 2. After being discharged from the discharge port 211, it falls between the feed pipe 21 and the separation cylinder 25, and falls onto the bottom plate 11 of the tower body 1 through the discharge channel 26. The hot air in the tower body 1 dries it, and the dried nano coating rises under the support of the hot air. At the same time, the nano coating to be dried continues to fall onto the bottom plate 11 of the tower body 1 through the discharge channel 26.

[0047] like Figure 2 As shown, the bottom loading method can change the path and method of the nano-coating entering the tower body 1, reduce the intersection of the nano-coating to be dried entering the tower body 1 and the nano-coating that has been dried and rises with the hot air, reduce the collision and adhesion between the two, and help reduce the obstruction of the dried nano-coating rising with the hot air, and then help reduce the over-drying. At the same time, the physical separation effect of the separation cylinder 25 can effectively isolate the newly entered nano-coating to be dried and the later entered nano-coating that has been dried, which is helpful to reduce the influence of the nano-coating to be dried on the dried nano-coating, thereby improving the uniformity of drying.

[0048] like Figure 2 As shown, the disperser 222 is helpful for initially dispersing the nano-coating entering the separation tube 25, reducing the agglomeration of the nano-coating, and reducing the nano-coating adhering to the top plate 251, and generating centrifugal force, which is helpful for making the nano-coating fall evenly on the guide plate 253. With the guiding effect of the guide plate 253, the nano-coating falls into the discharge channel 26 in an orderly manner, reducing the adhesion caused by the collision between the nano-coatings to be dried, which is helpful for improving the uniformity of drying.

[0049] like Figure 2 As shown, a rotating frame 27 is installed on the rotating shaft 22 above the top plate 251. Figure 3 andFigure 4 As shown, a plurality of concentric rotary grinding rings 271 are arranged at intervals on the rotary rack 27, and an interval 272 is left between two adjacent rotary grinding rings 271.

[0050] As Figure 2 shown, a fixed rack 28 is fixedly connected above the rotary grinding ring 271 inside the tower body 1. As Figure 3 and Figure 4 shown, a plurality of concentric fixed grinding rings 281 are arranged at intervals below the fixed rack 28, and an interval 282 is left between two adjacent fixed grinding rings 281.

[0051] As Figure 3 and Figure 4 shown, the rotary grinding ring 271 can be inserted into the interval 282 and the fixed grinding ring 281 can be inserted into the interval 272, and a discharge channel is left between the rotary grinding ring 271 and the fixed grinding ring 281.

[0052] As Figure 4 shown, on the one hand, the rotary grinding ring 271 can block large-particle nano coatings and make them return to the crushing area for re-crushing, which is beneficial to reducing the mixing of large-particle nano coatings into the dried finished products; on the other hand, during the relative movement between the rotary grinding ring 271 and the fixed grinding ring 281, medium-sized nano coatings can be ground to further refine the particles, which is beneficial to improving the consistency of the particle size of nano coatings. In addition, due to the rotation of the rotary grinding ring 271, the problem of material blockage that often occurs during the filtration of traditional filter meshes can be effectively avoided when nano coatings pass through. This dynamic grinding and filtering mechanism has significant advantages over traditional static filtering methods in terms of improving drying efficiency and ensuring particle uniformity.

[0053] As Figure 4 shown, the cross-sections of both the rotary grinding ring 271 and the fixed grinding ring 281 are trapezoidal. The width of the upper end surface of the rotary grinding ring 271 is smaller than that of the lower end surface, and the width of the upper end surface of the fixed grinding ring 281 is larger than that of the lower end surface. The width of the discharge channel decreases successively from bottom to top, which is beneficial to increasing the threshold of the particle size of medium-sized nano coatings to be ground, beneficial to improving the grinding efficiency, and thus beneficial to improving the drying efficiency.

[0054] As Figure 2 and Figure 5As shown in the figure, a stirring frame 223 is installed on the rotating shaft 22. The stirring frame 223 is located between the top plate 251 and the rotating grinding ring 271. A downwardly inclined stirring blade 224 is installed at the end of the stirring frame 223. A rotating ring 225 is installed below the stirring blade 224. The rotating ring 225 is rotatably connected to the outer wall of the side wall 252. Due to the obstruction of the rotating grinding ring 271, during the falling process of large-particle nano-coatings, the stirring blade 224 breaks them up.

[0055] As Figure 6 shown in the figure, a plurality of convex shafts 226 are installed on the outer wall of the side wall 252 at the position of the rotating ring 225. The axis of the convex shaft 226 is perpendicular to the axis of the partition cylinder 25. A plurality of spring pins 227 that can abut against the convex shaft 226 are provided inside the rotating ring 225.

[0056] As Figure 5 and Figure 6 shown in the figure, during the process of the rotating ring 225 following the stirring frame 223 to rotate, it drives the spring pins 227 to intermittently abut against the convex shafts 226, thereby vibrating the side wall 252. On the one hand, it reduces the nano-coatings adhering to the side wall 252. On the other hand, the side wall 252 drives the deflector 253 to vibrate, which is beneficial for the deflector 253 to cooperate with the disperser 222 to disperse the nano-coatings, thus being beneficial for improving the drying efficiency.

[0057] As Figure 2 shown in the figure, the horizontal screw conveyor 3 includes a feed cylinder 31, a rotating shaft 32 and a second driving motor 33.

[0058] As Figure 5 and Figure 6 shown in the figure, the feed cylinder 31 is arranged on one side of the conveying pipe 21. The axis of the feed cylinder 31 is perpendicular to the axis of the conveying pipe 21. The outlet end of the feed cylinder 31 is communicated with the lower part of the conveying pipe 21. A feed hopper 34 is provided on the feed cylinder 31. The rotating shaft 32 is rotatably arranged inside the feed cylinder 31. The axis of the rotating shaft 32 is collinear with the axis of the feed cylinder 31. A spiral blade 221 is provided on the rotating shaft 32. The second driving motor 33 is arranged on one side of the rotating shaft 32 and drives the rotating shaft 32 to rotate.

[0059] As Figure 1 and Figure 2 shown in the figure, the hot air blower 4 is arranged on one side of the tower body 1. An air outlet pipe 41 is connected to the hot air blower 4. The air outlet pipe 41 sequentially penetrates through the tower body 1, the partition cylinder 25 and is connected to the upper part of the conveying pipe 21.

[0060] As Figure 1 and Figure 2As shown, hot air preliminarily dries the nano - coating on the upper part of the material - conveying pipe 21 and inside the partition cylinder 25. Compared with drying inside the drying tower, it is beneficial to concentrate the heat and improve the drying efficiency; at the same time, it is beneficial to cooperate with the vertical screw conveyor 2 to increase the rising height of the nano - coating inside the partition cylinder 25, which is conducive to increasing the materials dispersed by the disperser 222 and improving the drying efficiency.

[0061] The implementation principle of a nano - coating drying device in this embodiment:

[0062] The horizontal screw conveyor 3 and the vertical screw conveyor 2 successively convey the nano - coating to be dried to the discharge port 211. The disperser 222 preliminarily disperses the nano - coating. The dispersed nano - coating falls between the material - conveying pipe 21 and the partition cylinder 25 and then falls onto the bottom plate 11 of the tower body 1 through the feeding channel 26. At the same time, the hot air conveyed by the hot - air blower 4 also enters from the upper part of the material - conveying pipe 21 through the discharge port 211 and is conveyed between the material - conveying pipe 21 and the partition cylinder 25, and then is conveyed to the bottom plate 11 of the tower body 1 through the feeding channel 26 to dry the nano - coating.

[0063] Under the lifting of the hot air, the nano - coating on the bottom plate 11 rises. At the same time, the nano - coating to be dried continuously falls onto the bottom plate 11 of the tower body 1 through the feeding channel 26, reducing the intersection of the nano - coating to be dried and the dried nano - coating that rises with the hot air.

[0064] The dried nano - coating contacts the stirring blades 224 and the stirring frame 223 during the rising process and is stirred and broken. The nano - coating continues to rise. The medium - sized and small - sized nano - coatings enter the discharge channel between the rotating grinding ring 271 and the fixed grinding ring 281. The small - sized nano - coatings are discharged from the discharge port 12 after passing through the discharge channel. Under the rotation of the rotating grinding ring 271, the medium - sized nano - coatings are ground, and the ground small - sized nano - coatings are discharged from the discharge port 12 after passing through the discharge channel. The large - particle nano - coatings that fail to pass through the discharge channel fall after contacting the rotating grinding ring 271, and the stirring blades 224 and the stirring frame 223 continue to break them. This cycle continues until the nano - coatings can pass through the discharge channel and are discharged from the discharge port 12.

[0065] While driving the stirring blades 224 to rotate, the stirring frame 223 drives the rotating ring 225 to rotate. The rotating ring 225 drives the spring pin 227 to intermittently abut against the convex shaft 226, thereby vibrating the side wall 252. On the one hand, it reduces the nano - coating adhering to the side wall 252. On the other hand, the side wall 252 drives the guide plate 253 to vibrate, which is beneficial for the guide plate 253 to cooperate with the disperser 222 to disperse the nano - coating, thus being conducive to improving the drying efficiency.

[0066] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A nano coating drying device, comprising a tower body and a vertical screw conveyor arranged in the tower body, a bottom plate is arranged at the lower part of the tower body, the vertical screw conveyor comprises a feeding pipe penetrating the bottom plate and a rotating shaft rotatably arranged in the feeding pipe, and a discharge port is arranged at the upper end of the feeding pipe; characterized in that: A conical flow guide cover is provided between the feed pipe and the bottom plate, the upper part of the flow guide cover is connected with a separation cylinder, the discharge port is located inside the separation cylinder, the separation cylinder has a top plate and a side wall, a material discharge channel is left between the lower end of the side wall and the flow guide cover; a spiral flow guide plate is provided on the inner wall of the side wall, the rotating shaft passes through the top plate and is rotatably connected to the top plate, a disperser is installed on the rotating shaft, and the disperser is located between the discharge port and the top plate; A plurality of concentric rotating grinding rings are arranged on the rotating shaft and above the top plate, with a gap of one between two adjacent rotating grinding rings; a plurality of concentric fixed grinding rings are arranged in the tower body, with a gap of two between two adjacent fixed grinding rings; the rotating grinding ring can be inserted into the gap of two and the fixed grinding ring can be inserted into the gap of one, and a discharge channel is left between the rotating grinding ring and the fixed grinding ring; a stirring frame is installed on the rotating shaft, the stirring frame is located between the top plate and the rotating grinding ring, a downwardly inclined stirring blade is installed at the end of the stirring frame, a rotating ring is installed at the lower part of the stirring blade, and the rotating ring is rotatably connected to the outer wall of the side wall; a plurality of cams are installed on the outer wall of the side wall at the position of the rotating ring, and a plurality of spring pins that can abut against the cams are arranged in the rotating ring; a hot air blower is arranged on one side of the tower body, an air outlet pipe is connected to the hot air blower, and the air outlet pipe passes through the tower body and the partition cylinder in sequence and is connected to the upper part of the feed pipe.

2. The nano coating drying device according to claim 1, characterized in that: The cross sections of the rotating grinding ring and the fixed grinding ring are both trapezoidal, and the width of the discharge channel decreases from bottom to top.

3. The nano coating drying device according to claim 1, characterized in that: A rotating frame is installed below the multiple rotating grinding rings, and the rotating frame is installed on the rotating shaft. A fixed frame is installed above the multiple fixed grinding rings, and the fixed frame is fixedly connected to the tower body.

4. The nano coating drying device according to claim 1, characterized in that: A horizontal screw conveyor is arranged on one side of the vertical screw conveyor. The horizontal screw conveyor comprises a feed barrel, the outlet end of the feed barrel is communicated with the lower part of the conveying pipe, and a feed hopper is arranged on the feed barrel.

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