A high-speed dispersion device for processing nano-silica coatings

Abstract

This invention discloses a high-speed dispersion device for processing nano-silica coatings, belonging to the technical field of coating processing equipment. It includes a drive mechanism; a stirring mechanism located below the drive mechanism, comprising a central stirring assembly and a bottom stirring assembly. The central stirring assembly includes an inner auger and an outer auger, with the outer auger sleeved outside the inner auger. The drive mechanism drives the inner and outer augers to reciprocate in opposite directions. The bottom stirring assembly includes multiple stirring blades, and the drive mechanism also drives the multiple stirring blades to rotate on their own axis while simultaneously performing planetary rotation. A defoaming mechanism located below the drive mechanism collects and breaks bubbles on the surface of the coating liquid. This invention, through its overall structural design, improves the coating dispersion effect while eliminating bubbles generated during the dispersion process.

Description

Technical Field

[0001] This invention relates to the field of coating processing equipment technology, and more specifically, to a high-speed dispersion device for processing nano-silica coatings. Background Technology

[0002] Nano-silica, due to its excellent properties such as small size effect and surface effect, can significantly improve the film strength, adhesion, wear resistance, and aging resistance of coatings when added to them, making it an important functional filler in the production of high-end coatings. In the processing of nano-silica coatings, the uniform dispersion of nano-silica particles is the core process determining the final performance of the coating. Uneven particle dispersion can easily lead to agglomeration and deposition, directly resulting in poor surface smoothness and decreased mechanical properties after film formation. Simultaneously, a large number of bubbles are easily generated during the stirring and dispersion process, and residual bubbles can further affect the coating's application effect and performance. Therefore, high-speed dispersion equipment, as the core equipment for achieving the dispersion and defoaming of nano-silica particles, directly determines the processing quality and efficiency of the coating.

[0003] Chinese patent CN213467589U discloses a coating dispersion mixing tank with a wall-scraping function. It uses spiral blades in conjunction with a dispersion disc to increase the coating dispersion effect. However, the single spiral blades cannot generate shear force on the coating, resulting in limited dispersion. Furthermore, air bubbles are easily incorporated into the coating during dispersion. Existing high-speed dispersion equipment, when processing high-viscosity nano-coatings, tends to trap numerous tiny bubbles within the slurry due to the high stirring speed. While conventional vacuum degassing methods are effective, for high-viscosity fluids, deep bubbles have long escape paths and low efficiency. Therefore, there is an urgent need for an improved device that can break surface bubbles in real time during stirring and prevent their re-entry. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a high-speed dispersion device for processing nano-silica coatings.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A high-speed dispersion device for processing nano-silica coatings includes a drive mechanism;

[0007] A stirring mechanism is provided below a drive mechanism. The stirring mechanism includes a middle stirring assembly and a bottom stirring assembly. The middle stirring assembly includes an inner auger and an outer auger, with the outer auger sleeved outside the inner auger. The drive mechanism is used to drive the inner and outer augers to reciprocate in opposite directions. The bottom stirring assembly includes multiple stirring blades. The drive mechanism is also used to drive the multiple stirring blades to rotate on their own axis while simultaneously performing planetary rotation.

[0008] The defoaming mechanism is located below the drive mechanism. The defoaming mechanism includes an annular frame with an inverted U-shaped cross-section, a connecting pipe, and a rotating pipe. A bubble-blocking component is fixed inside the annular frame above the gap between the inner and outer augers. The bubble-blocking component has a herringbone-shaped cross-section, and multiple bubble-breaking nails for puncturing bubbles are evenly distributed on both sides of the bottom of the bubble-blocking component. The annular frame is connected to the rotating pipe through the connecting pipe to form a negative pressure passage for sucking out the gas from the burst bubbles.

[0009] Furthermore, the central stirring assembly also includes a rotating shaft and multiple mounting rods. The rotating shaft is fixedly installed at the axis of the inner auger, and the multiple mounting rods are arranged in a ring array, passing through the outer auger and fixedly connected to it. The blades of the inner auger rotate in the same direction as the blades of the outer auger, which is used to form a convection circulation of materials on the inner and outer sides, forcing the coating to flow through the bubble-blocking component.

[0010] Furthermore, the bottom stirring assembly also includes multiple rotating rods, multiple planetary gears, and a sun gear. The sun gear is fixedly installed at the lower end of the rotating shaft, each rotating rod is rotatably installed at the lower end of its corresponding mounting rod, each planetary gear is fixedly installed at the lower end of its corresponding rotating rod, and all planetary gears mesh with the sun gear. Each stirring blade is fixedly installed at the middle of its corresponding rotating rod.

[0011] Furthermore, it also includes a mounting plate. The drive mechanism includes a column, a rack, a driven wheel, a motor, and a drive wheel. The column and motor are both fixedly mounted on the mounting plate. A bushing and a limiting clamp are rotatably mounted on the upper end of the column. A gear is fixedly mounted on the top of the bushing, and a bevel gear is fixedly mounted on the bottom of the bushing. Multiple support rods are fixedly mounted in a circular array in the middle of the bushing. The upper end of each mounting rod is fixedly connected to the corresponding support rod. The column is a hollow tubular structure. Two independent horizontal shafts are symmetrically fixedly mounted on the outer wall of the middle part of the column. Rotary mounting on the horizontal shafts... The column is equipped with a second bevel gear. A second bushing is rotatably mounted on the lower end of the column. A third bevel gear is fixedly mounted on the top of the second bushing. Both the first and third bevel gears mesh with two second bevel gears. The second bushing and the rotating shaft are both hollow tubular structures. The upper end of the rotating shaft is fixedly connected to the second bushing. The driven wheel is rotatably mounted on the mounting plate. A transmission rod is fitted between the shaft of the driven wheel and one end of the rack. The rack is slidably mounted on the limiting hoop and meshes with the first gear. The drive wheel is fixedly mounted on the output end of the motor. A belt is fitted between the drive wheel and the driven wheel.

[0012] Furthermore, the defoaming mechanism also includes a bubble collecting component, a rotary joint, a fixed pipe, and an air pump. The bubble collecting component is slidably installed on the upper end of the rotating shaft and is used to collect bubbles on the surface of the paint liquid. The rotary pipe is fixedly installed inside the rotating shaft and is connected to the bubble collecting component. The fixed pipe is fixedly installed inside the column and is connected to the air inlet of the air pump. The lower end of the fixed pipe and the upper end of the rotary pipe are rotatably connected through a rotary joint.

[0013] Furthermore, the bubble-collecting assembly includes a bracket, two limiting rings, multiple limiting posts, and a floating ring. The two limiting rings are fixedly mounted on a rotating shaft. The multiple limiting posts are arranged in a ring array and fixedly mounted between the two limiting rings. The bracket is sleeved on the rotating shaft, and the inner wall of the bracket cooperates with the multiple limiting posts. The annular frame is sleeved on the outside of the bracket, and the cross-section of the annular frame is inverted U-shaped. The upper end of the bubble-blocking component is fixedly connected to the upper end of the inner groove of the annular frame. The floating ring is fixedly mounted on the lower end of the bracket. Multiple connecting pipes are provided, arranged in a ring array above the bracket. One end of each connecting pipe communicates with the inner groove of the annular frame, and the other end of each connecting pipe passes through the rotating shaft and communicates with the rotating pipe.

[0014] Furthermore, it also includes a wall scraping mechanism, which includes an upper frame, a lower frame, and multiple connecting rods. The upper frame and the lower frame are both fixedly connected to multiple mounting rods. The multiple connecting rods are fixedly installed in a ring array between the upper frame and the lower frame. Side scrapers are elastically installed on the connecting rods. The contact angle between the side scrapers and the inner wall of the equipment is 30° to 45°, which is used to scrape off the paint adhering to the barrel wall and push it towards the central stirring assembly. A lower scraper is fixedly installed at the lower end of the lower frame, which is used to scrape off the paint adhering to the bottom of the barrel.

[0015] Furthermore, it also includes a top cover, which comprises an inner plate, an outer plate, and two connecting rings. The inner plate is rotatably mounted on the upper end of a rotating shaft, and the outer plate is sleeved on the outside of the inner plate. A locking ring 1 is fixedly installed on the outer side of the inner plate and the inner side of the outer plate. A locking ring 2 is fixedly installed on the inner side and the outer side of the connecting rings. The two connecting rings are symmetrically arranged at the upper and lower ends of the inner plate. Each locking ring 1 engages with the corresponding locking ring 2. The mounting rod passes through the two connecting rings, and a sealing ring is fixedly installed on the outer wall of the inner plate.

[0016] Furthermore, the outer plate is provided with multiple air holes, and a cross-shaped silicone valve is fixedly installed in each air hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) The present invention adopts a layered linkage stirring structure with the middle double auger rotating in opposite directions and the bottom planetary stirring. The double augers have the same spiral direction and rotate in opposite directions, forming bidirectional shear force while pushing the material to form an upper and lower convection circulation, avoiding the dispersion dead corner of directional flow, and realizing the dispersion without dead corners from the center of the equipment to the wall and from the top to the bottom. It effectively solves the problem of bottom deposition caused by the agglomeration of nano silica particles and their high density, and significantly improves the dispersion uniformity of particles in the coating.

[0019] (2) The present invention realizes the integrated linkage control of multiple mechanisms through a single motor transmission structure with gear, bevel gear and rack. A single motor can drive the inner and outer augers to rotate in opposite directions, the bottom planetary stirring and the wall scraping mechanism to rotate synchronously. There is no need to configure drive components for each mechanism separately, which greatly simplifies the drive system of the equipment. At the same time, the stable transmission of power is realized through bevel gear meshing and gear rack transmission. The transmission efficiency is high and the operation stability is strong. This not only reduces the manufacturing cost and operating energy consumption of the equipment, but also reduces the failure rate of drive components, and improves the overall reliability and maintenance convenience of the equipment.

[0020] (3) The present invention designs a liquid surface adaptive physical combination negative pressure composite defoaming structure and a sealed air pressure balance structure. The bubble collection component of the defoaming mechanism achieves adaptive lifting and lowering with the coating liquid surface through the floating ring. The herringbone bubble blocking component works with the bubble breaking nail to complete physical bubble breaking. Then, combined with the negative pressure of the air pump, the residual bubbles are extracted and broken. No chemical defoaming agent is needed throughout the process, which avoids affecting the performance of the coating itself and defoaming is thorough, preventing the residual bubbles from reducing the smoothness and adhesion of the coating film. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the central stirring assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the bottom stirring assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the drive mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the defoaming mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the bubble collection component of the present invention;

[0028] Figure 8This is a cross-sectional structural diagram of the bubble collection component of the present invention;

[0029] Figure 9 This is a schematic diagram of the wall scraping mechanism of the present invention;

[0030] Figure 10 This is a cross-sectional structural diagram of the top cover of the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Mounting plate; 2. Drive mechanism; 201. Column; 202. Gear 1; 203. Bushing 1; 204. Bevel gear 1; 205. Support rod; 206. Bevel gear 2; 207. Bushing 2; 208. Bevel gear 3; 209. Limiting clamp; 210. Rack; 211. Driven wheel; 212. Transmission rod; 213. Motor; 214. Drive wheel; 215. Belt; 3. Stirring mechanism; 301. Middle stirring assembly; 3011. Inner auger; 3012. Outer auger; 3013. Rotating shaft; 3014. Mounting rod; 302. Bottom stirring assembly; 3021. Rotating rod; 3022. Stirring blade; 3023. 1. Planetary gear; 3024. Sun gear; 4. Scraping mechanism; 401. Upper frame; 402. Lower frame; 403. Connecting rod; 404. Side scraper; 405. Lower scraper; 5. Top cover; 501. Inner plate; 502. Outer plate; 503. Connecting ring; 504. Air hole; 505. Sealing ring; 6. Defoaming mechanism; 601. Foam collecting assembly; 6011. Annular frame; 6012. Foam blocking component; 6013. Bracket; 6014. Limiting ring; 6015. Limiting post; 6016. Floating ring; 6017. Connecting pipe; 602. Rotating pipe; 603. Rotary joint; 604. Fixed pipe; 605. Air pump. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1 and Figure 2 A high-speed dispersion device for processing nano-silica coatings includes a drive mechanism 2;

[0035] A stirring mechanism 3 is disposed below the drive mechanism 2. The stirring mechanism 3 includes a middle stirring component 301 and a bottom stirring component 302. The middle stirring component 301 includes an inner auger 3011 and an outer auger 3012, with the outer auger 3012 sleeved outside the inner auger 3011. The drive mechanism 2 drives the inner auger 3011 and the outer auger 3012 to reciprocate in opposite directions. During operation, the inner auger 3011 and the outer auger 3012 rotate in opposite directions, forming a bidirectional shearing force. Simultaneously, the reciprocating motion prevents material from being transported back and forth. The dispersion dead zone generated by directional flow significantly improves the dispersion uniformity of nano-silica particles in the coating and prevents particle agglomeration. The bottom stirring component 302 includes multiple stirring blades 3022. The driving mechanism 2 is also used to drive the multiple stirring blades 3022 to rotate on their own axis while performing planetary rotation. During operation, the stirring blades 3022 revolve around the rotating shaft 3013 while rotating on their own axis at high speed, which can fully cover the bottom area of ​​the equipment. The beneficial effect is to solve the problem that nano-silica particles are easy to deposit at the bottom due to their slightly high density, and to ensure that the bottom material is mixed with the upper material.

[0036] The defoaming mechanism 6 is located below the driving mechanism 2. The defoaming mechanism 6 is used to collect and break bubbles on the surface of the coating liquid. During operation, it captures and processes the bubbles generated on the surface of the liquid in real time during the stirring process to avoid the residual bubbles affecting the smoothness and adhesion of the coating film.

[0037] See Figure 3 By adopting the above technical solution, the central stirring assembly 301 also includes a rotating shaft 3013 and multiple mounting rods 3014. The rotating shaft 3013 is fixedly installed at the axis of the inner auger 3011. During operation, the rotating shaft 3013 drives the inner auger 3011 to rotate synchronously, providing stable power transmission for the inner auger 3011, ensuring the rotation accuracy of the inner auger 3011, and avoiding eccentric swaying. The multiple mounting rods 3014 are arranged in a ring array and pass through the outer auger 3012 and are fixedly connected to it. The mounting rods 3014 provide fixed support and power transmission for the outer auger 3012. During operation, they drive the outer auger 3012 to move in the opposite direction with the drive mechanism 2, improving the structural stability of the outer auger 3012 and ensuring uniform force during bidirectional rotation. The spiral direction of the inner auger 3011 is the same as that of the outer auger 3012. With the reverse rotation, the materials inside and outside can form a convection circulation (the inner material moves upward, the outer material moves downward, or vice versa), accelerating the overall mixing of materials and further improving the dispersion efficiency.

[0038] See Figure 4By adopting the above technical solution, the bottom stirring assembly 302 further includes multiple rotating rods 3021, multiple planetary gears 3023, and a sun gear 3024. The sun gear 3024 is fixedly installed at the lower end of the rotating shaft 3013 and rotates synchronously with the rotating shaft 3013 during operation, providing a power source for the planetary gears 3023, realizing power linkage, and simplifying the drive structure. Each rotating rod 3021 is rotatably installed at the lower end of a corresponding mounting rod 3014. The mounting rod 3014 drives the rotating rod 3021 to revolve around the rotating shaft 3013, which has the beneficial effect of expanding the working range of the stirring blades 3022. Each planetary gear 3023 is fixedly installed at the lower end of the corresponding rotating rod 3021. All planetary gears 3023 mesh with the sun gear 3024. During operation, the sun gear 3024 drives the planetary gears 3023 to rotate, which in turn drives the rotating rod 3021 and the stirring blade 3022 to rotate. The revolution and rotation are synchronized through gear meshing, resulting in high transmission efficiency and strong stability. Each stirring blade 3022 is fixedly installed in the middle of the corresponding rotating rod 3021. The rotating stirring blade 3022 generates a high-speed vortex, which can break up the agglomerated particles at the bottom, enhance the dispersion effect of the bottom material, and prevent sedimentation and agglomeration.

[0039] See Figure 5The above technical solution also includes a mounting plate 1. The drive mechanism 2 includes a column 201, a rack 210, a driven wheel 211, a motor 213, and a drive wheel 214. The column 201 and the motor 213 are both fixedly mounted on the mounting plate 1. The mounting plate 1 provides a fixed reference for the overall mechanism, and the column 201 provides mounting support for the internal transmission components. A bushing 203 and a limiting clamp 209 are rotatably mounted on the upper end of the column 201. A gear 202 is fixedly mounted on the top of the bushing 203, and a bevel gear 204 is fixedly mounted on the bottom of the bushing 203. Multiple gears are fixedly mounted in a circular array in the middle of the bushing 203. Support rod 205, the upper end of each of the mounting rods 3014 is fixedly connected to the corresponding support rod 205. During operation, drive gear 1 202 rotates, driving bushing 1 203 to rotate. Bushing 1 203 drives mounting rod 3014 to rotate through support rod 205, thereby driving external auger 3012 to rotate. The column 201 is a hollow tubular structure. Two independent horizontal shafts are symmetrically fixedly installed on the outer side wall of the middle part of the column 201. Bevel gear 2 206 is rotatably installed on the horizontal shaft. Bushing 2 207 is rotatably installed at the lower end of the column 201. Bevel gear 3 208 is fixedly installed on the top of bushing 2 207. Bevel gear 1 204 and bevel gear 3 208 are... Both are engaged with two bevel gears 206. Both the bushing 207 and the rotating shaft 3013 are hollow tubular structures. During operation, bevel gear 204 drives bevel gear 208 to rotate in the opposite direction via bevel gear 206, thereby causing bushing 207 and bushing 203 to move in opposite directions. The upper end of the rotating shaft 3013 is fixedly connected to bushing 207. Bushing 207 drives the rotating shaft 3013 and the inner auger 3011 to rotate, achieving linkage control of the reverse rotation of the inner auger 3011 and the outer auger 3012, simplifying the drive system. The driven wheel 211 is rotatably mounted on the mounting plate 1. A transmission mechanism is installed between the shaft of the driven wheel 211 and one end of the rack 210. The moving rod 212, the rack 210 is slidably mounted on the limiting clamp 209, and the rack 210 meshes with the gear 202. The drive wheel 214 is fixedly mounted on the output end of the motor 213. A belt 215 is installed between the drive wheel 214 and the driven wheel 211. When working, the motor 213 drives the drive wheel 214 to rotate, and drives the driven wheel 211 to rotate through the belt 215. The driven wheel 211 pulls the rack 210 to slide back and forth through the transmission rod 212, which in turn causes the gear 202 to drive the bushing 203 to rotate back and forth, realizing the reciprocating motion function of the inner and outer augers. A single motor can complete multiple motion control, reducing equipment energy consumption and manufacturing costs.

[0040] See Figures 6-8By adopting the above technical solution, the defoaming mechanism 6 includes a bubble collecting component 601, a rotating pipe 602, a rotary joint 603, a fixed pipe 604, and an air pump 605. The bubble collecting component 601 is slidably installed on the upper end of the rotating shaft 3013 and is used to collect bubbles on the surface of the paint liquid. The rotating pipe 602 is fixedly installed inside the rotating shaft 3013 and rotates synchronously with the rotating shaft 3013. The rotating pipe 602 is connected to the bubble collecting component 601. The fixed pipe 604 is fixedly installed inside the column 201 and is connected to the air inlet of the air pump 605. The air pump 605 generates negative pressure when it works, which is then released through the fixed pipe. The fixed pipe 604 extracts air bubbles, thus eliminating them. The lower end of the fixed pipe 604 is rotatably connected to the upper end of the rotating pipe 602 via a rotary joint 603. The rotary joint 603 includes a stator fixed to the frame and a rotor that rotates with the rotating pipe 602. A mechanical sealing ring is provided between the two to ensure that the rotating pipe 602 maintains a stable negative pressure state inside when it rotates at high speed with the stirring shaft, and that no air leakage occurs. The rotary joint 603 achieves a sealed connection between the fixed pipe 604 and the rotating pipe 602, and does not affect the rotation of the rotating pipe 602 during operation. This ensures the sealing performance when the defoaming mechanism 6 and the stirring mechanism 3 work together, preventing air leakage from affecting the defoaming effect.

[0041] By adopting the above technical solution, the bubble collecting component 601 includes an annular frame 6011, a bubble-blocking component 6012, a support 6013, two limiting rings 6014, multiple limiting posts 6015, a floating ring 6016, and multiple connecting pipes 6017. The two limiting rings 6014 are fixedly installed on the rotating shaft 3013. The multiple limiting posts 6015 are fixedly installed in a circular array between the two limiting rings 6014, forming a guide track to restrict the movement direction of the support 6013 and prevent deviation. The floating ring 6016 is fixedly installed at the lower end of the support 6013, using buoyancy to drive the bubble collecting component 601 to rise and fall with the liquid level, achieving self-adaptive liquid level height without manual adjustment. The support 6013 is sleeved on the rotating shaft 3013, and the inner wall of the support 6013 cooperates with the multiple limiting posts 6015. When adapting to different liquid levels, the support 6013 slides up and down along the limiting posts 6015, ensuring smooth lifting and lowering of the bubble collecting component 601. The annular frame 6011 is sleeved on the outside of the bracket 6013. The cross-section of the annular frame 6011 is inverted U-shaped. The upper end of the bubble-blocking member 6012 is fixedly connected to the upper end of the inner groove of the annular frame 6011. The bubble-blocking member 6012 is located at the gap between the inner auger 3011 and the outer auger 3012. Because the inner auger 3011 and the outer auger 3012 will cause convection circulation of the paint liquid, the surface of the paint liquid will flow from the inside to the outside (or from the outside to the inside), so that the paint liquid is evenly distributed. The liquid flows through the bubble-blocking component 6012, which collects the bubbles. Multiple connecting pipes 6017 are arranged in a ring array above the support 6013. One end of each connecting pipe 6017 communicates with the inner groove of the ring frame 6011, and the other end passes through the rotating shaft 3013 and communicates with the rotating pipe 602. During operation, the bubbles collected in the ring frame 6011 are transported to the rotating pipe 602 or burst under negative pressure, preventing accumulation on the liquid surface. To prevent the high-viscosity nano-silica coating from being sucked into the negative pressure pipeline, the negative pressure value inside the ring frame 6011 is set to 0.01 MPa to 0.03 MPa. Due to the high viscosity of the coating and the bubble-breaking nail at the bottom of the bubble-blocking component 6012, the bubbles burst instantly upon contact with the bubble-breaking nail, releasing a gas with a density much lower than the coating. Under the pressure difference, the gas quickly enters the inverted U-shaped groove and is discharged through the connecting pipe 6017, while the coating liquid falls back into the stirring tank due to its own weight and viscosity.

[0042] By adopting the above technical solution, the cross-section of the bubble-blocking component 6012 is herringbone-shaped, which increases the contact area between the bubbles and the bubble-breaking structure and improves the bubble collection effect. Multiple bubble-breaking nails are fixedly installed on both sides of the bottom of the bubble-blocking component 6012. When the bubbles come into contact with the bubble-breaking nails, they are punctured, realizing physical bubble breaking. Combined with the above-mentioned negative pressure bubble breaking, there is no need to add chemical defoamers, avoiding affecting the performance of the coating, while the bubble breaking effect is thorough.

[0043] See Figure 9The above technical solution also includes a wall-scraping mechanism 4, which comprises an upper frame 401, a lower frame 402, and multiple connecting rods 403. The upper frame 401 and lower frame 402 are both fixedly connected to multiple mounting rods 3014 and rotate synchronously with the mounting rods 3014, enabling the wall-scraping mechanism 4 to work in conjunction with the stirring mechanism 3 without additional drive. Multiple connecting rods 403 are fixedly installed in a ring array between the upper frame 401 and the lower frame 402. Side scrapers 404 are elastically mounted on the connecting rods 403. The contact angle between the 04 and the inner wall of the equipment is 30° to 45°. During operation, the side scraper 404 slides against the inner wall of the equipment under the elastic force, scraping off the attached coating material, reducing material waste, and preventing the material on the wall from drying and affecting the dispersion quality. The elastic structure can also prevent damage caused by hard friction between the scraper and the wall. The lower frame 402 is fixedly installed with a lower scraper 405 at its lower end. During operation, it rotates with the lower frame 402 to scrape off the material attached to the bottom of the equipment. The beneficial effect is that, together with the bottom stirring component 302, it can thoroughly clean the bottom material and prevent sedimentation and agglomeration.

[0044] See Figure 10 The above technical solution also includes a top cover 5, which comprises an inner plate 501, an outer plate 502, and two connecting rings 503. The inner plate 501 is rotatably mounted on the upper end of the rotating shaft 3013. The outer plate 502 is sleeved on the outside of the inner plate 501. A locking ring 1 is fixedly installed on the outer side of the inner plate 501 and the inner side of the outer plate 502. A locking ring 2 is fixedly installed on the inner and outer sides of the connecting rings 503. The two connecting rings 503 are symmetrically arranged at the upper and lower ends of the inner plate 501. The locking ring 1 engages with the corresponding locking ring 2 to achieve a movable connection between the inner plate 501 and the outer plate 502. The mounting rod 3014 passes through two connecting rings 503. A sealing ring 505 is fixedly installed on the outer wall of the inner plate 501. During operation, the connecting ring 503 will rotate with the rotation of the mounting rod 3014, but the inner plate 501 and the outer plate 502 will not be affected, thus balancing sealing performance and motion compatibility. The top cover 5 as a whole plays a sealing and dustproof role, preventing external dust from entering the coating and reducing material splashing during the stirring process.

[0045] By adopting the above technical solution, the outer plate 502 is provided with a plurality of air holes 504, and a cross silicone valve is fixedly installed in the air hole 504. When the equipment is working, the pressure changes caused by stirring inside the equipment. The cross silicone valve can automatically open and close to balance the internal and external air pressure, avoid the internal negative pressure causing air bubbles to be sucked in or the positive pressure causing material leakage. At the same time, the silicone valve can prevent dust from entering and ensure the purity of the coating.

[0046] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A high-speed dispersion device for processing nano-silica coatings, characterized in that, include: Drive mechanism (2); A stirring mechanism (3) is located below the driving mechanism (2). The stirring mechanism (3) includes a middle stirring assembly (301) and a bottom stirring assembly (302). The middle stirring assembly (301) includes an inner auger (3011) and an outer auger (3012). The outer auger (3012) is sleeved on the outside of the inner auger (3011). The driving mechanism (2) is used to drive the inner auger (3011) and the outer auger (3012) to reciprocate in opposite directions. The bottom stirring assembly (302) includes multiple stirring blades (3022). The driving mechanism (2) is also used to drive the multiple stirring blades (3022) to rotate on their own axis while performing planetary rotation. Defoaming mechanism (6), the defoaming mechanism (6) is located below the driving mechanism (2), the defoaming mechanism (6) includes an annular frame (6011) with an inverted U-shaped cross section, a connecting pipe (6017) and a rotating pipe (602), a bubble-blocking member (6012) is fixed inside the annular frame (6011) above the gap between the inner auger (3011) and the outer auger (3012), the bubble-blocking member (6012) has a herringbone cross section, and multiple bubble-breaking nails for puncturing bubbles are evenly distributed on both sides of the bottom of the bubble-blocking member (6012), the annular frame (6011) is connected to the rotating pipe (602) through the connecting pipe (6017) to form a negative pressure passage for sucking out the gas from the broken bubbles; The central stirring assembly (301) also includes a rotating shaft (3013) and multiple mounting rods (3014). The rotating shaft (3013) is fixedly installed at the axis of the inner auger (3011). The multiple mounting rods (3014) are arranged in a ring array and pass through the outer auger (3012) and are fixedly connected to it. The blades of the inner auger (3011) rotate in the same direction as the blades of the outer auger (3012) to form a convection circulation of materials on the inner and outer sides, forcing the coating to flow through the bubble-blocking component (6012). It also includes a mounting plate (1). The drive mechanism (2) includes a column (201), a rack (210), a driven wheel (211), a motor (213), and a drive wheel (214). The column (201) and the motor (213) are both fixedly mounted on the mounting plate (1). A bushing (203) and a limiting clamp (209) are rotatably mounted on the upper end of the column (201). A gear (202) is fixedly mounted on the top of the bushing (203). A bevel gear (204) is fixedly installed at the bottom of the bushing (203). Multiple support rods (205) are fixedly installed in a ring array in the middle of the bushing (203). The upper end of each mounting rod (3014) is fixedly connected to the corresponding support rod (205). The column (201) is a hollow tubular structure. Two independent horizontal shafts are symmetrically fixedly installed on the outer side wall of the middle part of the column (201). A bevel gear (206) is rotatably installed on the horizontal shaft. A bushing two (207) is rotatably mounted on the lower end of the column (201). A bevel gear three (208) is fixedly mounted on the top of the bushing two (207). Both the bevel gear one (204) and the bevel gear three (208) mesh with two bevel gears two (206). Both the bushing two (207) and the rotating shaft (3013) are hollow tubular structures. The upper end of the rotating shaft (3013) is fixedly connected to the bushing two (207). The driven wheel (211) rotates. Mounted on mounting plate (1), the driven wheel (211) is fitted with a transmission rod (212) between the shaft of the driven wheel (211) and one end of the rack (210). The rack (210) is slidably mounted on the limiting hoop (209) and meshes with gear one (202). The drive wheel (214) is fixedly mounted on the output end of the motor (213). A belt (215) is fitted between the drive wheel (214) and the driven wheel (211).

2. The high-speed dispersion equipment for processing nano-silica coatings according to claim 1, characterized in that: The bottom stirring assembly (302) also includes multiple rotating rods (3021), multiple planetary gears (3023), and a sun gear (3024). The sun gear (3024) is fixedly installed at the lower end of the rotating shaft (3013). Each of the rotating rods (3021) is rotatably installed at the lower end of the corresponding mounting rod (3014). Each of the planetary gears (3023) is fixedly installed at the lower end of the corresponding rotating rod (3021). All of the planetary gears (3023) mesh with the sun gear (3024). Each stirring blade (3022) is fixedly installed in the middle of the corresponding rotating rod (3021).

3. The high-speed dispersion equipment for processing nano-silica coatings according to claim 1, characterized in that: The defoaming mechanism (6) further includes a bubble collecting component (601), a rotary joint (603), a fixed pipe (604), and an air pump (605). The bubble collecting component (601) is slidably installed on the upper end of the rotating shaft (3013). The bubble collecting component (601) is used to collect bubbles on the surface of the paint liquid. The rotary pipe (602) is fixedly installed inside the rotating shaft (3013). The rotary pipe (602) is connected to the bubble collecting component (601). The fixed pipe (604) is fixedly installed inside the column (201). The fixed pipe (604) is connected to the air inlet of the air pump (605). The lower end of the fixed pipe (604) is rotatably connected to the upper end of the rotary pipe (602) through the rotary joint (603).

4. The high-speed dispersion equipment for processing nano-silica coatings according to claim 3, characterized in that: The bubble collecting assembly (601) includes a bracket (6013), two limiting rings (6014), multiple limiting posts (6015), and a floating ring (6016). The two limiting rings (6014) are fixedly mounted on the rotating shaft (3013). The multiple limiting posts (6015) are arranged in a ring array and fixedly mounted between the two limiting rings (6014). The bracket (6013) is sleeved on the rotating shaft (3013), and the inner wall of the bracket (6013) cooperates with the multiple limiting posts (6015). The annular frame (6011) is sleeved on the outside of the bracket (6013). The cross-section of the annular frame (6011) is inverted U-shaped. The upper end of the bubble-blocking component (6012) is fixedly connected to the upper end of the inner groove of the annular frame (6011). The floating ring (6016) is fixedly installed at the lower end of the bracket (6013). Multiple connecting pipes (6017) are provided. Multiple connecting pipes (6017) are arranged in a ring array above the bracket (6013). One end of the connecting pipe (6017) is connected to the inner groove of the annular frame (6011). The other end of the connecting pipe (6017) passes through the rotating shaft (3013) and is connected to the rotating pipe (602).

5. The high-speed dispersion equipment for processing nano-silica coatings according to claim 1, characterized in that: It also includes a wall scraping mechanism (4), which includes an upper frame (401), a lower frame (402) and multiple connecting rods (403). The upper frame (401) and the lower frame (402) are both fixedly connected to multiple mounting rods (3014). The multiple connecting rods (403) are fixedly installed in a ring array between the upper frame (401) and the lower frame (402). A side scraper (404) is elastically installed on the connecting rod (403). The contact angle between the side scraper (404) and the inner wall of the equipment is 30° to 45°. It is used to scrape off the paint adhering to the barrel wall and push it towards the central stirring assembly (301). A lower scraper (405) is fixedly installed at the lower end of the lower frame (402). It is used to scrape off the paint adhering to the bottom of the barrel.

6. The high-speed dispersion equipment for processing nano-silica coatings according to claim 1, characterized in that: It also includes a top cover (5), which includes an inner plate (501), an outer plate (502) and two connecting rings (503). The inner plate (501) is rotatably mounted on the upper end of the rotating shaft (3013). The outer plate (502) is sleeved on the outside of the inner plate (501). A locking ring 1 is fixedly installed on the outer side of the inner plate (501) and the inner side of the outer plate (502). A locking ring 2 is fixedly installed on the inner side and the outer side of the connecting ring (503). The two connecting rings (503) are symmetrically arranged at the upper and lower ends of the inner plate (501). Each locking ring 1 engages with the corresponding locking ring 2. The mounting rod (3014) passes through the two connecting rings (503). A sealing ring (505) is fixedly installed on the outer wall of the inner plate (501).

7. The high-speed dispersion equipment for processing nano-silica coatings according to claim 6, characterized in that: The outer plate (502) is provided with multiple air holes (504), and a cross silicone valve is fixedly installed in the air hole (504).

Images