Sanding device for industrial paint slurry processing

Abstract

The invention relates to the technical field of sand mills, and particularly discloses a sanding device for industrial paint production and processing, the sanding device comprises a base and a sanding mechanism, the two ends of the base are provided with a side box and a clamping mechanism respectively, the sanding mechanism comprises a first seal head, a cylinder and a second seal head which are connected in sequence, and an expansion shaft is concentrically and rotatably arranged in the first seal head; the end, extending into the side box, of the expansion shaft is connected with a driving assembly, the part, extending into the barrel, of the expansion shaft is sleeved with a dispersion disc, a filter cylinder is arranged in the second end socket, and turbine blades in meshing transmission with the expansion shaft are arranged in the filter cylinder. According to the sanding device disclosed by the invention, the sanding beads attached to the dispersing disc can be automatically cleaned in the whole process, the labor intensity of operators is reduced, the time for cleaning and maintaining the interior of the sanding barrel is shortened, the cleaned sanding beads can be screened on line, so that some slightly-worn sanding beads can be secondarily used, and the production efficiency is improved. And the cost of grinding the industrial paint slurry by the existing sand mill is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sand mills, and in particular discloses a sand mill device used for production and processing of industrial paint. Background Art

[0002] In the production process of industrial paint, the raw materials and solvents need to be mixed and stirred to prepare slurry, and then the slurry is ground so that some granular materials in the raw materials are ground finer to ensure the product quality of the industrial paint.

[0003] The grinding process of existing industrial paints is usually carried out with traditional sand mills. After the sand mill stops running, the sanding beads inside the cylinder stick to the surface of the dispersion disk under the action of the paint. Once the paint solidifies, these sanding beads are more difficult to clean up. The operator needs to remove the grinding cylinder first, and then remove the dispersion disk from the main shaft to clean the sanding beads. The whole process is time-consuming and labor-intensive, affecting the normal use of the sand mill.

[0004] For example, the invention patent with application number 202310646165.5 discloses a sand mill, including a base, a transmission box is installed on the base, a grinding cylinder body and a main motor are installed on one side of the transmission box, a main shaft is installed inside the grinding cylinder body, the main motor is connected to one end of the main shaft through a pulley in the transmission box, a feeding port and a discharging port are provided on the grinding cylinder body, a bead adding port for adding zirconium beads connected to the inside of the grinding cylinder body is provided on the top of one side of the grinding cylinder body, a bead outlet for discharging zirconium beads connected to the inside of the grinding cylinder body is provided on the bottom of one side of the grinding cylinder body, and a plurality of dispersion discs are evenly arranged on the outer wall of the main shaft along its axial direction. The sand mill disclosed in the invention patent is used in the process of industrial paint grinding. Once the inside of the grinding cylinder body is not cleaned in time after the grinding process is completed, the sand mill beads will adhere to the surface of the dispersion disc. In the subsequent use process, the grinding cylinder body and the dispersion disc need to be removed successively, and then reinstalled after cleaning, which makes the cleaning and maintenance process of the entire sand mill time-consuming and labor-intensive, seriously affecting the subsequent normal use. Therefore, in response to the shortcomings of existing sand mills for industrial paint grinding processing, the present application proposes a sanding device that can quickly clean and maintain internal sanding beads, and can screen the cleaned sanding beads according to particle size so that the reusable sanding beads can be put into use again, thereby reducing the operating cost of industrial paint grinding processing. Summary of the invention

[0005] The present invention aims to provide a sanding device that can quickly clean and maintain internal sanding beads, and can screen the cleaned sanding beads according to the particle size so that the reusable sanding beads can be put into use again, thereby reducing the operating cost of industrial paint grinding processing.

[0006] The present invention is achieved through the following technical solutions: A sanding device for industrial paint slurry processing comprises a base and a sanding mechanism, wherein two ends of the base are respectively provided with side boxes and a clamping mechanism, the sanding mechanism comprises a first end cap, a cylinder body and a second end cap which are detachably connected in sequence, the first end cap is fixedly connected to the side box, and a paint inlet and a sand bead inlet are connected to the first end cap, an expansion shaft is coaxially rotatably arranged in the first end cap, the end of the expansion shaft extending into the side box is connected to a driving assembly, a row of dispersion discs are sleeved on the part of the expansion shaft extending into the cylinder body, a filter cartridge is arranged in the second end cap, a turbine blade meshing with the expansion shaft is arranged in the filter cartridge, and a discharge pipe is connected to the outer end of the filter cartridge, a ring body is rotatably connected in the second end cap, a through rod which passes through a row of dispersion discs is connected to the ring body, and a limit piece is inserted into the end of the through rod which passes through the dispersion disc; Both ends of the cylinder are provided with support seats for supporting the rotation of the cylinder, and a power component for driving the rotation of the cylinder is provided on the support seat, a moving component for driving the support seat to move left and right is provided between the side box and the clamping mechanism, a strip opening is provided at the upper end of the cylinder, an arc-shaped sealing plate for opening and closing is provided in the strip opening, a receiving groove is provided in the base, a strip plate directly below the strip opening is rotatably provided in the receiving groove, a row of cleaning strips extending into the cylinder through the strip opening is provided on the strip plate, and the distance between two adjacent cleaning strips is set equal to the minimum distance between two adjacent dispersion disks, and a driving telescopic rod for driving the strip plate to rotate is provided in the receiving groove.

[0007] The sand grinding device disclosed in the present invention is used in the grinding process of industrial paint slurry. The paint inlet part and the sand bead inlet part respectively add the material and the sand grinding beads into the sealed space of the sand grinding mechanism, and then start the driving component to make the dispersion plate rotate at high speed along with the expansion shaft. Under the action of the dispersion plate, the sand grinding beads can continuously impact and shear the industrial paint slurry, thereby processing it into a finer and more uniform state.

[0008] When the sand mill needs to be restarted after being shut down for a period of time, it is necessary to clean and maintain the sand mill first. In the specific operation process, the operator first releases the connection between the first head and the cylinder, and then releases the tensioning and fixing effect of the expansion shaft on the dispersion disc. Then, under the action of the moving assembly, the two support seats carry the cylinder and the second head to the direction of the clamping mechanism until the clamping mechanism clamps and fixes the second head. At the same time, during the movement of the second head to the clamping mechanism, the limiter at the end of the through rod can gather the dispersion discs that were originally arranged at equal intervals together, and then the limiter is pulled out from the end of the through rod, and the dispersion disc is tightened and fixed again through the expansion shaft.

[0009] Next, under the reverse action of the moving assembly, the cylinder moves back a certain distance, so that the penetration rod is pulled out from all the dispersion discs on the one hand, and the dispersion discs gathered together are located directly above a row of cleaning strips. Then, the power assembly is started to rotate the cylinder 180°, and the strip opening is automatically opened during its rotation. After opening, the strip plate can be changed from a vertical state to a horizontal state under the action of the driving telescopic rod, so that the cleaning strips can extend into the cylinder through the strip opening, and a row of cleaning strips are in contact with the side of a row of dispersion discs. Then, the driving assembly is started to make the dispersion disc rotate with the expansion shaft, and during its rotation, the cleaning strips can shovel or scrape off all the sanding beads attached to the surface that are difficult to clean, ensuring that the sanding beads inside the grinding mechanism can be cleaned. After cleaning, the device can be reset by reverse operation and put into the next use.

[0010] As a further arrangement of the above scheme, an arc-shaped groove is opened at the upper end of the cylinder, the strip-shaped opening is arranged at one end of the arc-shaped groove, an arc-shaped guide rod and a spring are arranged in the arc-shaped groove on the side away from the strip-shaped opening, the arc-shaped sealing plate is fitted on the outer wall of the arc-shaped groove through the arc-shaped guide rod and the spring, and a convex strip is extended radially outward from the end of the arc-shaped sealing plate, and a baffle strip located under the cylinder is fixedly connected to the support seat close to one side of the arc-shaped groove, and the baffle strip hinders the downward rotating convex strip.

[0011] The present invention adopts the structural design between the strip mouth and the arc-shaped sealing plate. When the strip mouth rotates downward from the upper end of the cylinder, the blocking effect of the baffle bar on the convex bar during the process of the strip mouth rotating to the lower end will cause the arc-shaped sealing plate to remain stationary during the continuous downward rotation of the cylinder, thereby causing the arc-shaped sealing plate to be misaligned with the strip mouth, thereby realizing automatic opening of the strip mouth; conversely, during the upward reset rotation, the arc-shaped sealing plate will cover the strip mouth again due to the action of the spring, thereby realizing sealing of the strip mouth and avoiding leakage during the grinding of the paint slurry.

[0012] As a further configuration of the above scheme, the power assembly includes a third motor disposed on the support seat, a gear is disposed on the motor shaft of the third motor, and a large gear ring meshing with the gear is disposed on the outer circumferential surface of the cylinder. The power assembly uses the third motor as a power source, and then the cylinder can rotate in the support seat under the meshing transmission of the gear and the large gear ring.

[0013] As a further configuration of the above scheme, the moving assembly includes a screw rod and a slide rod arranged in parallel between the side box and the clamping mechanism, and the end of the screw rod is connected to a second motor, and the lower ends of the two support seats are provided with a threaded hole and a slide hole respectively interacting with the screw rod and the slide rod. The moving assembly uses the second motor as a power source, and then the two support seats are synchronously moved horizontally under the transmission of the screw rod and the guidance of the slide rod.

[0014] As a further configuration of the above scheme, the driving assembly includes a first motor and a transmission belt, the first motor and the expansion shaft are both provided with transmission wheels, and the transmission belt is provided between the two transmission wheels. The above scheme uses the first motor as a power source, and then the expansion shaft is rotated at a high speed under the action of the transmission belt.

[0015] As a further configuration of the above scheme, the expansion shaft includes a hollow shaft, and a plurality of axially arranged slots are evenly opened on the hollow shaft located in the cylinder body, each slot is provided with a key strip, and the inner ends of the plurality of key strips are commonly connected with an elastic ring, and the inner end of each of the key strips is provided with a beveled slot, a push rod is provided inside the hollow shaft, and an extrusion bevel block acting on the beveled slot is provided on the push rod, and the outer end of the push rod is connected with a push cylinder.

[0016] The above is a specific design form of the expansion shaft, which realizes the axial movement of the push rod inside the hollow shaft by extending or shortening the push cylinder, and in the process of its axial movement, the extrusion effect between the extrusion block and the bevel mouth makes all the key strips expand outward synchronously, thereby realizing the tension and fixation of the dispersion disk sleeved on the outer ring; conversely, the elastic ring will cause all the key strips to shrink toward the center synchronously, automatically contacting the tension and fixation of the dispersion disk, so that it can be moved axially and adjusted along the outside of the hollow shaft.

[0017] As a further arrangement of the above scheme, an inclined sieve plate is provided at the lower end of the receiving trough, a side-outlet material guide plate is provided at the lower inclined end of the sieve plate, a return material box connected with the material guide plate is provided on the side of the base, a vertically upward return material auger is provided in the return material box, and a return material part connected with the sand bead entry part is provided at the upper end of the return material auger.

[0018] The present invention further arranges the above-mentioned technical scheme, and in the process of cleaning the sanding beads inside the sanding mechanism, the fallen sanding beads can be screened by the screen plate according to size, and the small-size sanding beads with severe wear are screened out, and some slightly worn sanding beads are sent to the return material box by the guide plate, and then sent to the sanding mechanism for continued use by the return material auger, thereby avoiding the increase in the cost and waste of the use of sanding beads.

[0019] As a further configuration of the above scheme, a built-in bearing ring is provided in the second head, the ring body is connected to the built-in bearing ring, and the end of the rotating shaft of the turbine blade extending out of the filter cartridge is meshed and transmitted with the expansion shaft through a toothed disk.

[0020] As a further configuration of the above solution, the first end cover, the cylinder and the second end cover are sealed and connected via flanges, sealing rings and bolt connectors.

[0021] As a further configuration of the above solution, the clamping mechanism includes a side plate fixed to the end of the upper surface of the base, and a triangular chuck is provided at the upper end of the side plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects: The sanding device disclosed in the present invention does not need to remove the sanding cylinder and the dispersion disk before cleaning the internal sanding beads, as in the traditional sanding machine cleaning method. The sanding beads attached to the dispersion disk can be cleaned automatically throughout the whole process, which greatly reduces the labor intensity of the operators, shortens the time for cleaning and maintenance of the inside of the sanding cylinder, and ensures the efficient grinding processing of industrial paint slurry.

[0023] The sanding device disclosed in the present invention can also screen the cleaned sanding beads online according to the degree of wear, so that some slightly worn sanding beads can be transported to the inside of the sanding cylinder for secondary use, thereby reducing the cost of grinding industrial paint slurry with existing sand mills. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure at a first angle during the grinding operation of the present invention; Figure 2 A second angle schematic diagram of the three-dimensional structure of the present invention during grinding operation; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention when it is disassembled, cleaned and maintained; Figure 4 It is a schematic diagram of the three-dimensional structure of the base, cleaning strips, etc. in the present invention; Figure 5 It is a schematic diagram of the internal planar structure of the present invention from a side view; Figure 6 It is a schematic diagram of the three-dimensional assembly structure of the sanding mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the cylinder, arc-shaped sealing plate, etc. in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the cylinder, expansion shaft, dispersion disk, etc. in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the second head, the ring body, the through rod, etc. in the present invention; Fig.10It is a schematic diagram of the three-dimensional structure of the expansion shaft, dispersion disk, driving assembly, etc. in the present invention; Fig.11 It is a schematic diagram of the three-dimensional cross-sectional structure inside the expansion shaft in Example 2 of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 11 , and describes the application in detail with reference to embodiments. Example 1

[0028] Example 1 discloses a sand grinding device for industrial paint slurry processing, see attached Figure 1 and attached Figure 2 , including a base 1, a side box 2, a sanding mechanism 3 and a control console 4. The lower surface of the base 1 is provided with a plurality of legs for stable support of the entire device. The side box 2 is fixedly arranged at one end of the upper surface of the base 1. The other end of the upper surface of the base 1 is fixedly connected to a clamping mechanism 6 through a side plate 5. The specific clamping mechanism 6 preferably uses a triangular chuck, through which the second head 303 in the sanding mechanism 3 can be quickly clamped and fixed.

[0029] Reference Figure 6 and attached Fig.10The sanding mechanism 3 includes a cylindrical barrel 301, and the two ends of the barrel 301 are respectively connected to the first head 302 and the second head 303 through flanges 304, sealing rings 305 and bolt connectors, so that the first head 302, the second head 303 and the barrel 301 can be detachably connected, and the sealing ring 305 at the connection can effectively prevent the internal liquid from flowing out of the connection gap, ensuring the sealing of the entire barrel 301. The first head 302 is fixedly set on the side box 2, and the second head 303 is suspended and connected to the other end of the barrel 300. An arc groove 306 is provided at the upper end of the outer circumferential surface of the cylinder 300, and a strip opening 3061 connected to the inner cavity of the cylinder 300 is provided at one end of the arc groove 306, and then an arc guide rod 307 and a spring are provided in the arc groove 306 on the side away from the strip opening 3061, and an arc sealing plate 308 attached to the outer wall of the arc groove 306 is connected through the arc guide rod 307 and the spring, and the arc sealing plate 308 can effectively seal the strip opening 306, and then a convex strip 309 extends radially outward at the end of the arc sealing plate 308.

[0030] A sealed bearing 310 is arranged at the center of the first end cap 302, and an expansion shaft 7 is rotatably arranged in the sealed bearing 310, one end of the expansion shaft 7 extends into the inside of the side box 2, and a driving assembly 8 for driving the expansion shaft 7 to rotate is arranged in the side box 2. The driving assembly 8 includes a first motor 801 and a transmission belt 802, and corresponding transmission wheels 803 are arranged on the expansion shaft 7 and the first motor 801, and then the transmission belt 802 is arranged between the two transmission wheels 803. A plurality of dispersion discs 9 are sleeved on the expansion shaft 7 inside the cylinder 301, and the dispersion discs 9 can be fixed at corresponding positions on the expansion shaft 7 under the tensioning action of the expansion shaft 7, so that it can rotate at high speed with the expansion shaft 7.

[0031] In addition, a paint inlet portion 311 is provided at the upper end of one side of the first head 302, and a sand bead inlet portion 312 is provided at the upper end of the other side of the first head 302, so that during the sanding process, the industrial paint slurry enters into the sealed inner cavity of the sanding mechanism 3 through the paint inlet portion 311, and the sanding beads enter into the sealed inner cavity of the sanding mechanism 3 through the sand bead inlet portion 312, and then in the process of the expansion shaft 7 driving the dispersion disk 9 to rotate at a high speed, the sanding beads can continuously impact and shear the industrial paint slurry, thereby processing it into a finer and more uniform state.

[0032] Reference Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 6, support seats 10 are provided at both ends of the cylinder 301, and the cylinder 301 is rotatably connected to the bearing ring in the support seat 10. A baffle 11 located below the cylinder 301 is fixedly connected to the support seat 10 near the side of the arc groove 306. The baffle 11 will hinder the convex strip 309 during the process of the top of the cylinder 301 rotating to the lower end. Therefore, the arc sealing plate 308 will not rotate with the cylinder 301 during the continuous rotation of the cylinder 301, so that the arc sealing plate 308 is misaligned with the strip opening 3061, and is completely opened when the strip opening 3061 is at the lowest end. A large gear ring 322 is welded on the outer circumferential surface of the cylinder 301, a third motor 323 is installed on the support seat 10, and a gear 324 meshing with the large gear ring 322 is provided on the motor shaft of the third motor 323.

[0033] In addition, threaded holes and sliding holes are respectively provided at the front and rear ends of the two support seats 10, and then a front and rear parallel screw rod 12 and a sliding rod 13 are provided between the side box 2 and the side plate 5, and the screw rod 12 and the sliding rod 13 respectively interact with the threaded holes and the sliding holes on the support seat 10, and a second motor for driving the screw rod 12 is provided inside the side box 2. Driven by the second motor and under the action of the screw rod 12 and the sliding rod 13, the barrel 301 can be moved close to or away from the side box 2.

[0034] Reference Fig. 9 , an internal bearing ring 313 is arranged on the inner wall of the second end cap 303, a ring body 314 is rotatably connected in the internal bearing ring 313, and then a plurality of axially arranged through rods 315 are fixedly connected to the ring body 314, so that each through rod 315 can pass through the corresponding through holes on a row of dispersion discs 9, and a stopper 316 is inserted at the outer end of the through rod 315 passing through the dispersion disc 9. A filter cartridge 317 is coaxially fixedly connected to the inner end wall of the second end cap 303, and a corresponding filter cloth or filter layer is arranged on the outer surface of the filter cartridge 317, which can intercept the sand grinding beads, and a corresponding discharge pipe 318 is connected to the outer end surface of the second end cap 303. A turbine blade 319 is arranged inside the filter cartridge 317, and a rotating shaft 320 extending out of the filter cartridge 317 is connected to the turbine blade 319, and then the rotating shaft 320 and the end of the expansion shaft 7 are meshed and driven through a toothed disk 321.

[0035] Reference Figure 4 and attached Figure 5A receiving groove 101 is provided on the upper surface of the base 1 below the sanding mechanism 3, and a strip plate 102 is rotatably connected to one side end of the receiving groove 101 through a hinge. A row of cleaning strips 103 that can extend into the cylinder 301 through the strip opening 3061 is connected to the upper surface of the strip plate 102, and the distance between two adjacent cleaning strips 103 is equal to the minimum distance between two adjacent dispersion discs 9. Finally, a driving telescopic rod 104 is connected to the side of the receiving groove 101 for driving the strip plate 102 to rotate around the hinge between the horizontal and vertical states.

[0036] When the sanding device disclosed in this embodiment 1 is grinding industrial paint slurry, the first head 302, the cylinder 301 and the second head 303 are sealed and connected in sequence and fixed on the side box 2, and during the grinding process, the industrial paint slurry and sanding beads are added into the interior of the cylinder 301 through the paint inlet 311 and the sand bead inlet 312 respectively.

[0037] Then, the first motor 801 is started to rotate the expansion shaft 7. Under the action of the expansion shaft 7, a row of spaced dispersion discs 9 rotate at high speed inside the cylinder 301, so that the sanding beads continuously impact and shear the industrial paint slurry, breaking up large particles of foreign matter in the industrial paint slurry to prepare fine and uniform paint. At the same time, due to the meshing transmission of the toothed disc 321, the rotating shaft 320 and the expansion shaft 7 rotate synchronously, and then the turbine blades 319 inside the filter cartridge 317 can continuously discharge the paint liquid along the discharge pipe 318, while the sanding beads are filtered and retained by the filter cartridge 317, so that they continue to grind the industrial paint slurry added later.

[0038] When the sanding device is stopped for a period of time and needs to be used again, some sanding beads are adhered to the surface of the dispersion plate 9 due to the effect of paint, and they need to be cleaned before they can be put into use again. In the specific operation, the connection between the first head 302 and the cylinder 301 is first released, and then the second motor is started, so that the cylinder 301 is moved to one end of the clamping mechanism 6 under the action of the screw 12 and the slide rod 13 until the first head 302 is clamped and fixed by the clamping mechanism 6. Next, the tensioning and fixing effect of the expansion shaft 7 on the dispersion disk 9 is first released, and the connection between the second head 303 and the cylinder 301 is released. After the release, the second motor is started in reverse to move the cylinder 301 to one end of the side box 2, and during the movement, due to the action of the limit piece 316 at the end of the through rod 315, the evenly opened dispersion disk 9 will move toward one end until the distance between all the dispersion disks 9 becomes the shortest. At this time, the operator removes the limit piece 316 to separate the through rod 315 from all the dispersion disks 9. After separation, all the dispersion disks 9 are tightened and fixed again by the expansion shaft 7.

[0039] Subsequently, the third motor 323 is started so that the cylinder 301 is rotated 180° in the two support seats 10 under the meshing transmission of the large gear ring 322 and the gear 324, so that the strip opening 3061 originally at the top is rotated to the bottom, and the strip opening 3061 is fully opened. After opening, the driving telescopic rod 104 is started to change the strip plate 102 from a vertical state to a horizontal state, and the cleaning strip block 103 on the strip plate 102 can extend into the inside of the cylinder 301 through the strip opening 3061, and a row of cleaning strip blocks 103 are in contact with the corresponding side of the dispersion disk 9. Then the driving assembly 8 is started so that the dispersion disk 9 rotates with the expansion shaft 7 for a while. During the rotation of the dispersion disk 9, the sanding beads attached to the surface of the dispersion disk 9 will be cleaned up by the cleaning strip block 103, and the cleaned sanding beads fall into the receiving groove 101 for collection. Finally, after the maintenance of the entire sanding device is completed, the above steps are reversed until it returns to the initial state, and the next batch of industrial paint slurry can be ground normally. Example 2

[0040] Example 2 discloses a sanding device for industrial paint slurry processing that is further improved based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0041] Reference Figure 4 and attached Figure 5 In this embodiment 2, an inclined screen plate 13 is provided at the lower end of the inner cavity of the receiving groove 101, and the screen plate 13 is inclined downward toward one end of the side box 2. A material guide plate 14 is provided in the receiving groove 101 at the lower inclined end of the screen plate 13, and a return box 15 connected to the outer end of the material guide plate 14 is provided at the lower end of the side of the base 1, and a return auger 16 extending vertically upward is provided in the return box 15, and a return part 161 connected to the sand bead entry part 312 is provided at the upper end of the return auger 16. The above design enables the sanding beads cleaned from the sanding mechanism 3 to be screened by the screen plate 13, and some sanding beads with severe wear and small particle size directly enter the bottom of the receiving groove 101, while some slightly worn sanding beads are sent to the return box 15 by the guide plate 14, and then sent to the sanding mechanism 3 for continued use by the return auger 16, thereby avoiding the increase in the cost and waste of the use of sanding beads.

[0042] In addition, the expansion shaft 7 in this embodiment 2 adopts the structure of a key bar expansion shaft, refer to the attached Fig.11It includes a hollow shaft 701, on which 3-5 axially arranged slots are evenly opened inside the cylinder 301, and a key strip 702 is arranged in each slot, and elastic rings 703 for radial contraction are connected between all the key strips 702. In addition, a bevel opening 704 is provided at the inner end of each key strip 702, a push rod 705 is provided inside the hollow shaft 701, and an extrusion bevel block acting on the bevel opening 704 is provided on the push rod 705, and finally a push cylinder 706 is rotatably connected to the outer end of the push rod 705, and the push rod 705 is pushed by the action of the push cylinder 706, and then all the key strips 702 are synchronously moved outward under the action of the elastic ring 703 through the action between the extrusion bevel block and the bevel opening 704, so as to realize the tensioning and fixing of the dispersion disk 9 mounted on the outer cylindrical surface of the hollow shaft 701, and conversely, starting the push cylinder 706 can make all the key strips 702 shrink into the strip opening under the action of the elastic ring 703, thereby releasing the tensioning and fixing effect on the dispersion disk 9.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sanding device for industrial paint slurry processing, comprising a base and a sanding mechanism, characterized in that: The two ends of the base are respectively provided with a side box and a clamping mechanism, the sand grinding mechanism comprises a first end cap, a cylinder body and a second end cap which are detachably connected in sequence, the first end cap is fixedly connected to the side box, and a paint inlet part and a sand bead inlet part are connected to the first end cap, an expansion shaft is coaxially rotatably arranged in the first end cap, the end of the expansion shaft extending into the side box is connected to a driving assembly, a row of dispersion discs are sleeved on the part of the expansion shaft extending into the cylinder body, a filter cartridge is arranged in the second end cap, a turbine blade meshing with the expansion shaft is arranged in the filter cartridge, and a discharge pipe is connected to the outer end of the filter cartridge, a ring body is rotatably connected in the second end cap, a through rod which passes through a row of dispersion discs is connected to the ring body, and a limit piece is inserted into the end of the through rod which passes through the dispersion disc; Both ends of the cylinder are provided with support seats for supporting the rotation of the cylinder, and a power component for driving the rotation of the cylinder is provided on the support seat, a moving component for driving the support seat to move left and right is provided between the side box and the clamping mechanism, a strip opening is provided at the upper end of the cylinder, an arc-shaped sealing plate for opening and closing is provided in the strip opening, a receiving groove is provided in the base, a strip plate directly below the strip opening is rotatably provided in the receiving groove, a row of cleaning strips extending into the cylinder through the strip opening is provided on the strip plate, and the distance between two adjacent cleaning strips is set equal to the minimum distance between two adjacent dispersion disks, and a driving telescopic rod for driving the strip plate to rotate is provided in the receiving groove.

2. The sanding device for industrial paint slurry processing according to claim 1 is characterized in that: An arc-shaped groove is provided at the upper end of the cylinder, the strip-shaped opening is arranged at one end of the arc-shaped groove, an arc-shaped guide rod and a spring are provided in the arc-shaped groove on the side away from the strip-shaped opening, the arc-shaped sealing plate is fitted on the outer wall of the arc-shaped groove through the arc-shaped guide rod and the spring, and a convex strip is extended radially outward at the end of the arc-shaped sealing plate, and a baffle strip located below the cylinder is fixedly connected to the support seat close to one side of the arc-shaped groove, and the baffle strip hinders the downward rotating convex strip.

3. The sanding device for industrial paint slurry processing according to claim 2, characterized in that: The power assembly comprises a third motor arranged on a support seat, a gear is arranged on the motor shaft of the third motor, and a large gear ring meshing with the gear is arranged on the outer circumferential surface of the cylinder.

4. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The moving assembly includes a screw and a slide rod which are arranged in parallel between the side box and the clamping mechanism, and the end of the screw is connected to a second motor. The lower ends of the two support seats are provided with threaded holes and slide holes which respectively interact with the screw and the slide rod.

5. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The driving assembly includes a first motor and a transmission belt. The first motor and the expansion shaft are both provided with transmission wheels, and the transmission belt is provided between the two transmission wheels.

6. The sand grinding device for industrial paint slurry processing according to claim 5, characterized in that: The expansion shaft includes a hollow shaft, and a plurality of axially arranged strips are evenly opened on the hollow shaft located in the cylinder body, each strip is provided with a key strip, and the inner ends of the plurality of key strips are commonly connected with an elastic ring, and the inner end of each key strip is provided with a beveled opening, a push rod is provided inside the hollow shaft, and an extrusion bevel block acting with the beveled opening is provided on the push rod, and the outer end of the push rod is connected with a push cylinder.

7. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The lower end of the receiving trough is provided with an inclined sieve plate, and a side-outlet material guide plate is provided at the lower inclined end of the sieve plate. A return material box connected with the material guide plate is provided on the side of the base, and a vertically upward return material auger is provided in the return material box. A return material part connected with the sand bead entry part is provided at the upper end of the return material auger.

8. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The second end cap is provided with a built-in bearing ring, the ring body is connected to the built-in bearing ring, and the end of the rotating shaft of the turbine blade extending out of the filter cartridge is meshed and driven with the expansion shaft through a toothed disk.

9. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The first end cap, the cylinder and the second end cap are sealed and connected via flanges, sealing rings and bolt connectors.

10. The sand grinding device for industrial paint slurry processing according to claim 1, characterized in that: The clamping mechanism comprises a side plate fixed to the end of the upper surface of the base, and a triangular chuck is arranged at the upper end of the side plate.

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