A sanding device for fire retardant coatings

Abstract

The utility model provides a kind of sanding device of fireproof paint, including support platform, the upper end of support platform is provided with multiple slide rails, multiple slide rails are respectively matched and installed with multiple bearing roller frames between the upper end, two bearing roller frames are internally provided with a sanding barrel, the outer camber of sanding barrel is provided with multiple convex inclined blocks, the upper end of support platform is provided with drive box, the inside of drive box is rotatably provided with dispersion disc in the inside of sanding barrel by rotating column, the inside of drive box is provided with synchronous drive mechanism that drive roller board moves towards each other. Through the sanding device of fireproof paint described in the utility model, the disassembly separation between sanding barrel and end cover can be automatically realized without manually screwing bolt, and the sanding barrel and stirring mechanism are conveniently cleaned, one-key starting can realize end cover automatic sliding opening, greatly shorten cleaning preparation time, and also shorten cleaning and maintenance cycle, support fast change production, color change, adapt to the production needs of multiple batches of fireproof paint.

Description

Technical Field

[0001] This utility model belongs to the field of fire-retardant coating production technology, and specifically relates to a sand milling device for fire-retardant coatings. Background Technology

[0002] The sand milling device for fire-retardant coatings is a key piece of equipment used to ultrafinely grind and uniformly disperse solid fillers (such as expanding agents, titanium dioxide, etc.) in the liquid slurry of fire-retardant coatings. By high-speed collision and shearing of the premixed slurry with grinding media (such as zirconium beads) in the sand milling barrel, particle refinement is achieved, thereby improving the stability, adhesion and fire-retardant performance of the coating.

[0003] Existing sand milling devices for fire-retardant coatings grind the slurry by having it enter the milling tank from the top or bottom of the mill. Driven by a high-speed rotating agitator, the slurry comes into full contact with grinding media (such as zirconium beads), achieving sand milling of the fire-retardant coating slurry. To facilitate cleaning of the milling tank and agitator, a detachable flange mechanism is typically used to separate the milling tank from the end cover. A sliding rail is then used to guide the separation. However, the flange mechanism is secured with multiple bolts, requiring the loosening of numerous high-strength bolts (often 8-16). Operators must use tools (such as wrenches) to loosen and remove dozens or even more bolts, a purely manual and time-consuming task. Similarly, during installation, the holes must be aligned and the bolts tightened one by one, and tightening must be done diagonally to ensure uniform pressure on the sealing surface and prevent leakage. The operation is complex, and the disassembly and assembly process is excessively time-consuming each time the material is changed, the color is changed, or maintenance is required, severely impacting production cycle time. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a sanding device for fire-retardant coatings. It can automatically disassemble and separate the sanding barrel and end cap without manual bolt tightening, and facilitates the cleaning of the sanding barrel and stirring mechanism. The end cap can be automatically slid open with one-button start, which greatly shortens the cleaning preparation time and the cleaning and maintenance cycle. It also supports rapid production and color changes and can adapt to the production needs of multiple batches of fire-retardant coatings.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a sanding device for fireproof coating, including a support platform, multiple slide rails are provided on the upper end of the support platform, multiple bearing roller frames are respectively installed between the upper ends of the multiple slide rails, a sanding barrel is provided inside two bearing roller frames, multiple convex inclined blocks are provided on the outer arc surface of the sanding barrel, a drive box is provided on the upper end of the support platform, a dispersing disc located inside the sanding barrel is rotatably provided inside the drive box through a rotating column, multiple dovetail grooves are respectively provided with roller plates slidingly arranged, the multiple roller plates are respectively installed in cooperation with the outer side of the adjacent convex inclined blocks, a synchronous drive mechanism for driving the roller plates to move in opposite directions is provided inside the drive box, a motor is provided inside the drive box, and the output shaft of the motor is connected to the left end of the rotating column through a coupling.

[0006] The synchronous drive mechanism includes a connecting plate disposed inside the drive box. Multiple limiting posts are disposed on the left side of the connecting plate. A rotating connecting plate is slidably disposed between the outer arc surfaces of the multiple limiting posts. Multiple rotating connecting rods are rotatably disposed inside the rotating connecting plate. A rotating fixed seat is disposed on the left side of each roller plate. The multiple rotating connecting rods are rotatably connected to the interior of the adjacent rotating fixed plate. A lead screw is rotatably disposed between the connecting plate and the drive box and is threadedly connected to the rotating fixed plate. A drive unit for driving the lead screw to rotate is disposed on the left side of the drive box. The drive unit includes a second motor disposed on the left side of the drive box. The output shaft of the second motor is connected to the left end of the lead screw through a coupling.

[0007] As a further improvement of this utility model, a mounting plate is provided on the right side of the drive box, and a sealing ring is provided on the right side of the mounting plate. The sealing ring is bonded to the mounting plate, and a sealing groove adapted to the sealing ring is provided on the left side of the sanding barrel.

[0008] As a further improvement of this utility model, a bearing frame is provided at the lower end of the support platform, and the support platform and the bearing frame are fixed together by welding. Mounting holes are provided on the left and right sides of the bearing frame respectively.

[0009] As a further improvement of this utility model, a filter shell is provided on the left side of the inner wall of the grinding barrel, and the position of the filter shell corresponds to that of the discharge pipe.

[0010] As a further improvement of this utility model, a feed shell is provided at the upper end of the outer arc surface of the sand mill barrel. A cover plate is fixed to the upper end of the feed shell by bolts. The feed shell is connected to the inside of the sand mill barrel. A discharge pipe is provided on the right side of the sand mill barrel and is connected to the inside of the sand mill barrel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, by controlling the start of the motor, its output shaft drives the dispersing disc on the rotating column to rotate at high speed, which pushes the slurry in the sand mill barrel to generate strong collision, shearing and friction with the grinding media (such as zirconium beads). This effectively refines and evenly disperses the solid particles in the fireproof coating. When the slurry particles are ground to the set fineness, they can be pushed by pressure through the holes on the filter shell into the discharge pipe and smoothly discharged to the external collection container, realizing the continuous discharge of qualified materials. The slurry with particles that are still too large or not sufficiently dispersed, as well as the grinding media (zirconium beads), are intercepted by the filter shell and retained in the sand mill barrel to continue to participate in the grinding process.

[0012] Secondly, by controlling the motor to rotate counterclockwise, the rotating plate moves to the right under the guidance of the limit post, causing the internal rotating connecting rod to rotate and expand, and the roller plate to detach from the outer surface of the convex inclined block. Then, the personnel push the sand grinding barrel, causing the roller frame to roll to the right side on the slide rail. Due to the convexity on the right side of the slide rail, the roller frame is prevented from slipping off the slide rail, realizing the separation between the separation disc and the sand grinding barrel. This facilitates the subsequent cleaning of the separation disc and the sand grinding barrel. The disassembly and separation of the sand grinding barrel and the end cover can be automatically realized without manual bolt tightening, and it is also convenient to clean the sand grinding barrel and the stirring mechanism. The end cover can be automatically slid open with one-button start, which greatly shortens the cleaning preparation time and the cleaning and maintenance cycle. It supports rapid production change and color change, and adapts to the production needs of multiple batches of fireproof coatings.

[0013] Thirdly, when cleaning is completed and installation is carried out, the convex inclined block on the grinding barrel is pushed to the lower end of the roller plate. By controlling the second motor to rotate clockwise, the roller plate moves downward and rolls in contact with the outer side of the convex inclined block. Using the inclined plane pushing principle, the sand grinding barrel is pushed to the left horizontally, so that the sealing ring is gradually pressed into the sealing groove and subjected to uniform compression, thereby achieving automatic centering and tight fit. This structure not only ensures a reliable seal between the sand grinding barrel and the end cover, effectively preventing paint leakage and grinding media escape during the grinding process, but also greatly improves the automation level and repeatability of the installation.

[0014] Fourth, the support frame at the lower end of the support platform provides a robust and stable support structure for the sanding device, effectively withstanding the strong vibrations, torques, and dynamic loads generated during high-speed operation, preventing the machine from shaking or tilting. Simultaneously, the mounting holes on both sides of the support frame allow personnel to securely fix the entire device to the ground or foundation using bolts, significantly enhancing the overall stability of the equipment and avoiding safety hazards such as displacement, sliding (i.e., "misalignment"), or even loosening and falling off due to vibration. Attached Figure Description The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a front sectional view of the present invention. Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0016] In the diagram: 101, support platform; 102, slide rail; 103, grinding barrel; 104, discharge pipe; 105, roller frame; 106, bearing frame; 107, feed shell; 108, motor one; 109, connecting plate; 110, filter shell; 111, dispersing disc; 201, drive box; 202, roller plate; 203, rotating fixed seat; 204, rotating connecting rod; 205, limiting post; 206, lead screw; 207, motor two; 208, convex inclined block; 209, mounting plate; 210, sealing ring; 211, rotating plate. Detailed Implementation

[0017] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0018] like Figure 1 , 2As shown in Figure 3, a sanding device for fire-retardant coating includes a support platform 101. Multiple slide rails 102 are provided on the upper end of the support platform 101. Multiple bearing roller frames 105 are respectively installed between the upper ends of the slide rails 102. A sanding barrel 103 is disposed inside two bearing roller frames 105. Multiple protruding inclined blocks 208 are provided on the outer arc surface of the sanding barrel 103. A drive box 201 is provided on the upper end of the support platform 101. A dispersing disc 111 located inside the sanding barrel 103 is rotatably disposed inside the drive box 201 via a rotating column. Multiple dovetail grooves are provided inside the drive box 201, in which roller plates 202 are slidably disposed. The wheel plates 202 are respectively installed with the outer side of the adjacent convex inclined blocks 208. The drive box 201 is equipped with a synchronous drive mechanism that drives the roller plates 202 to move in opposite directions. The drive box 201 is equipped with a motor 108. The output shaft of the motor 108 is connected to the left end of the rotating column through a coupling. The lower end of the support platform 101 is equipped with a bearing frame 106. The bearing frame 106 has mounting holes on the left and right sides respectively. The bearing frame 106 at the lower end of the support platform 101 can provide stable support for the sanding device. The mounting holes on both sides can also be used by personnel to fix it with bolts to prevent it from running out of position during high-speed operation.

[0019] like Figure 1 , 2 As shown in Figure 3, a feed shell 107 is provided at the upper end of the outer arc surface of the sand mill 103. A cover plate is fixed to the upper end of the feed shell 107 by bolts. The feed shell 107 is connected to the interior of the sand mill 103. A discharge pipe 104 is provided on the right side of the sand mill 103. The discharge pipe 104 is connected to the interior of the sand mill 103. A filter shell 110 is provided on the left side of the inner wall of the sand mill 103. The filter shell 110 corresponds to the position of the discharge pipe 104.

[0020] The cover plate is removed from the feed shell 107 by turning the bolts with a tool. Then, the fire-retardant coating slurry and zirconium beads that need to be ground are added inside. The cover plate is then fixed to the feed shell 107 by turning the bolts. Then, the motor 108 is turned on by the control, and the output shaft drives the dispersion disk 111 on the rotating column to rotate. This causes the slurry and grinding media (such as zirconium beads) to collide and shear at high speed in the grinding barrel 103, thereby achieving particle refinement and grinding of the fire-retardant coating slurry. The slurry ground to the appropriate particle size can be discharged from the inside of the discharge pipe 104 through the leakage hole of the filter shell 110 to the external collection container. The slurry and zirconium beads that are larger than the leakage hole of the filter shell 110 continue to return to the inside of the grinding barrel 103 for grinding until the slurry inside is ground to the appropriate particle size.

[0021] like Figure 2 , 3As shown in Figure 4, the synchronous drive mechanism includes a connecting plate 109 disposed inside the drive box 201. Multiple limiting posts 205 are disposed on the left side of the connecting plate 109. A rotating connecting plate 109 is slidably disposed between the outer arc surfaces of the multiple limiting posts 205. Multiple rotating connecting rods 204 are rotatably disposed inside the rotating connecting plate 109. A rotating fixed seat 203 is disposed on the left side of each roller plate 202. The multiple rotating connecting rods 204 are rotatably connected to the interior of the adjacent rotating fixed plates respectively. A lead screw 206 is rotatably disposed between the connecting plate 109 and the drive box 201 and is threadedly connected to the rotating fixed plate. A drive unit for driving the lead screw 206 to rotate is disposed on the left side of the drive box 201. The drive unit includes a second motor 207 disposed on the left side of the drive box 201. The output shaft of the second motor 207 is connected to the left end of the lead screw 206 through a coupling.

[0022] When the grinding drum 103 and the dispersing disc 111 need to be cleaned, the motor 207 is turned on to rotate counterclockwise, which in turn causes the rotating plate 211 to move to the right under the guidance of the limit post 205. This causes the internal rotating connecting rod 204 to rotate and expand, and the roller plate 202 to disengage from the outer surface of the convex inclined block 208. Then, the grinding drum 103 is pushed by the operator, causing the roller frame 105 to roll to the right side on the slide rail 102. The protrusions prevent the roller frame 105 from slipping off the slide rail 102, thus separating the separation disc from the grinding barrel 103. This facilitates subsequent cleaning of the separation disc and the grinding barrel 103. When cleaning is complete and installation is performed, the protruding inclined block 208 on the grinding barrel is pushed to the lower end of the roller plate 202. Then, by controlling the motor 207 to rotate clockwise, the roller plate 202 moves downward and rolls in contact with the outer side of the protruding inclined block 208, thereby installing the grinding barrel 103.

[0023] According to another embodiment of the present invention, such as Figure 3 , 4 As shown, a mounting plate 209 is provided on the right side of the drive box 201, and a sealing ring 210 is provided on the right side of the mounting plate 209. A sealing groove adapted to the sealing ring 210 is provided on the left side of the sanding barrel 103. The sealing ring 210 on the mounting plate 209 is inserted into the sealing groove on the left side of the sanding barrel 103 to ensure the sealing between the sanding barrel 103 and the mounting plate 209. Furthermore, due to the inclined shape of the convex inclined block 208, when the sanding barrel 103 is installed, as the roller plate 202 moves downward, the sanding barrel 103 continues to move to the left, and the sealing ring is squeezed and comes into further contact with the sealing groove, thereby achieving a tighter installation.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sanding device for fire-retardant coatings, comprising a support table (101), characterized in that: The upper end of the support platform (101) is provided with multiple slide rails (102), and multiple bearing roller frames (105) are respectively installed between the upper ends of the multiple slide rails (102). A sanding barrel (103) is provided inside the two bearing roller frames (105). Multiple convex inclined blocks (208) are provided on the outer arc surface of the sanding barrel (103). The upper end of the support platform (101) is provided with a drive box (201). The drive box (201) is rotatably provided with a dispersing disc (111) located inside the sanding barrel (103) through a rotating column. Roller plates (202) are slidably provided in multiple dovetail grooves opened inside the drive box (201). The multiple roller plates (202) are respectively installed in cooperation with the outer side of the adjacent convex inclined blocks (208). The drive box (201) is provided with a synchronous drive mechanism for driving the roller plates (202) to move in opposite directions.

2. The sanding device for fire-retardant coating as described in claim 1, characterized in that: The drive box (201) is equipped with a motor (108), and the output shaft of the motor (108) is connected to the left end of the rotating column through a coupling.

3. The sanding device for fire-retardant coating as described in claim 1, characterized in that: The synchronous drive mechanism includes a connecting plate (109) disposed inside the drive box (201). Multiple limiting posts (205) are provided on the left side of the connecting plate (109). A rotating connecting plate (109) is slidably disposed between the outer arc surfaces of the multiple limiting posts (205). Multiple rotating connecting rods (204) are rotatably disposed inside the rotating connecting plate (109). A rotating fixing seat (203) is provided on the left side of each roller plate (202). The multiple rotating connecting rods (204) are rotatably connected to the interior of the adjacent rotating fixing plates. A lead screw (206) is rotatably disposed between the connecting plate (109) and the drive box (201) and is threadedly connected to the rotating fixing plate. A drive unit for driving the lead screw (206) to rotate is provided on the left side of the drive box (201).

4. The sanding device for fire-retardant coating as described in claim 3, characterized in that: The drive unit includes a second motor (207) located on the left side of the drive box (201), and the output shaft of the second motor (207) is connected to the left end of the lead screw (206) via a coupling.

5. The sanding device for fire-retardant coating as described in claim 1, characterized in that: The drive box (201) is provided with a mounting plate (209) on the right side, and a sealing ring (210) is provided on the right side of the mounting plate (209). A sealing groove that matches the sealing ring (210) is provided on the left side of the grinding barrel (103).

6. The sanding device for fire-retardant coating as described in claim 1, characterized in that: The upper end of the outer arc surface of the grinding barrel (103) is provided with a feed shell (107). The upper end of the feed shell (107) is fixed with a cover plate by bolts. The feed shell (107) is connected to the interior of the grinding barrel (103). A discharge pipe (104) is provided on the right side of the grinding barrel (103). The discharge pipe (104) is connected to the interior of the grinding barrel (103).

7. The sanding device for fire-retardant coating as described in claim 1, characterized in that: A filter shell (110) is provided on the left side of the inner wall of the grinding barrel (103), and the filter shell (110) corresponds to the position of the discharge pipe (104).

8. The sanding device for fire-retardant coating as described in claim 1, characterized in that: The lower end of the support platform (101) is provided with a bearing frame (106), and mounting holes are respectively opened on the left and right sides of the bearing frame (106).

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