A coating production and processing raw material pretreatment equipment

Abstract

The utility model belongs to paint production and processing technical field, concretely is a kind of paint production and processing raw material pretreatment equipment, including pretreatment box, the first discharge opening is established in the right side middle part of pretreatment box, the second discharge opening is established in the left side bottom of pretreatment box, the feed inlet is established in the top of pretreatment box, the back of pretreatment box is equipped with the socket, the plug-in box is inserted in the socket, the utility model is equipped with quick release assembly, utilizes the synergies of pressing block, trapezoidal block and spring two, by pressing pressing block, trapezoidal block is pushed to sliding rod and insert block and is separated from insertion slot, can extract plug-in box, after unfastening pressing block, spring two reset makes insert block reinsertion insertion slot, ensure connection firm, this quick release assembly simple structure, it is easy to operate, the maintenance and replacement of screen plate are convenient.

Description

Technical Field

[0001] This utility model relates to the field of coating production and processing technology, specifically to a pretreatment equipment for raw materials in coating production and processing. Background Technology

[0002] Powder coating is a solvent-free solid powder coating with characteristics such as being solvent-free, pollution-free, recyclable, environmentally friendly, energy and resource saving, reducing labor intensity, and having high mechanical strength of the coating film.

[0003] Chinese patent (authorization announcement number: CN 212651470 U, authorization announcement date: 2021.03.05) discloses a raw material pretreatment device for paint production, including a housing. A motor is fixedly connected to the central shaft on the left side of the housing via a connecting frame. A crank shaft is fixedly connected to the output end of the motor. The right side of the crank shaft passes through the housing and extends to the right side of the housing. A drive wheel is sleeved on the right side of the surface of the crank shaft. This invention uses a motor to drive the crank shaft to rotate, which in turn drives the drive wheel to rotate. The drive wheel drives the driven wheel to rotate, which in turn drives the connecting shaft to rotate, thereby causing the grinding roller to rotate and grind the material. The ground material flows to the top of the screen plate. The movable sleeve also drives the second movable block to move, which in turn drives the inclined block to move. The inclined block drives the connecting rod to move, which in turn drives the fixed frame to move. The fixed frame drives the screen plate to move, thus sieving the material and removing impurities.

[0004] In the field of paint production, the screen plates in the raw material pretreatment equipment need to be cleaned or replaced regularly to ensure screening efficiency. The fixed installation structure of the screen plates in the above-mentioned equipment is not convenient for quick disassembly, maintenance and replacement. In order to enable the screen plates of the above-mentioned raw material pretreatment equipment to be quickly disassembled for maintenance and replacement, we propose a raw material pretreatment equipment for paint production and processing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pretreatment equipment for raw materials used in coating production. By incorporating a quick-release assembly and utilizing the synergistic action of a pressing block, a trapezoidal block, and a spring, the screen plate can be quickly disassembled and installed, facilitating maintenance and replacement, thus solving the problems mentioned earlier.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment device for raw materials used in paint production, comprising a pretreatment box, a first discharge port located at the center of the right side of the pretreatment box, a second discharge port located at the bottom left side of the pretreatment box, a feed port located at the top of the pretreatment box, an insertion slot located at the rear of the pretreatment box, a insertion box being inserted into the insertion slot, a mounting frame being fixedly connected to the front side of the insertion box, a connecting plate being fixedly connected to the left side of the interior of the pretreatment box, and an opening on the left side of the mounting frame. The device is equipped with a sliding groove. A sliding strip is fixedly connected to the right side of the connecting plate and slidably connected to the sliding groove. A screen plate is hinged to the left side inside the mounting frame and is positioned above the first discharge port. Limiting grooves are provided through the front and rear sides of the right side of the mounting frame. Limiting rods are fixedly connected to the front and rear sides of the right side of the screen plate and two sets of limiting rods are respectively inserted into the limiting grooves. A quick-release assembly is installed between the insertion port and the insertion box. A vibration assembly is installed at the bottom of the screen plate and a crushing assembly is installed at the top of the pretreatment box.

[0007] Preferably, the quick-release assembly includes a pressing block, a pressing groove is formed through the center of the rear side of the insert box, the pressing block is slidably connected to the pressing groove, fixing blocks are fixedly connected to the left and right sides of the interior of the insert box, sliding rods are slidably connected to the two sets of fixing blocks, connecting rods are fixedly connected to the ends of the two sets of sliding rods that are close to each other, and the two sets of connecting rods are respectively arranged on the upper and lower sides of the interior of the insert box, trapezoidal blocks are fixedly connected to the other ends of the two sets of connecting rods, the left and right sides of the front part of the pressing block abut against the two sets of trapezoidal blocks respectively, limiting plates are fixedly connected to the upper and lower sides of the pressing block, the rear side of the limiting plate abuts against the inner wall of the insert box, and fixing mechanisms are provided at the ends of the two sets of sliding rods that are far from each other.

[0008] Preferably, the fixing mechanism includes an insert block, which is fixedly connected to the end of the sliding rod away from the connecting rod. Sliding tubes are provided on both the left and right sides of the insertion box, and the insert block is slidably connected to the sliding tubes. A fixing plate is fixedly sleeved on the sliding rod, with the side of the fixing plate near the insert block abutting against the side of the sliding tube away from the insert block. A second spring is sleeved on the sliding rod, and the second spring is disposed between the fixing block and the fixing plate. Slots are provided on both the left and right sides inside the insertion port, and the end of the insert block near the slot is inserted into the slot.

[0009] Preferably, the vibration assembly includes a drive motor, which is fixedly installed on the front side of the pretreatment box. A rotating rod is rotatably connected between the front and rear sides of the pretreatment box. The output shaft of the drive motor is fixedly connected to the front end of the rotating rod. A cam is fixedly sleeved on the rotating rod and is located at the bottom right side of the sieve plate. A pull rod is fixedly connected to the rear end of the limiting rod located at the rear side. A spring is fixedly connected to the pull rod, and the other end of the spring is fixedly connected to the bottom side of the mounting frame.

[0010] Preferably, the crushing component includes a second drive motor, which is fixedly installed on the rear side of the pretreatment box. Two sets of rotating rods are rotatably connected between the front and rear sides of the pretreatment box, and the two sets of rotating rods are respectively located on the bottom left and right sides of the feed inlet. The output shaft end of the second drive motor is fixedly connected to the rear end of one set of rotating rods. Gears are fixedly sleeved on the front ends of both sets of rotating rods, and the two sets of gears mesh with each other. Rubber sleeves are also fixedly sleeved on both sets of rotating rods.

[0011] Preferably, a handle is fixedly connected to the rear side of the insert box.

[0012] Preferably, casters are installed at the four corners of the bottom of the pretreatment box.

[0013] This utility model provides a pretreatment device for raw materials in paint production. Compared with the prior art, it has the following advantages:

[0014] 1. This pretreatment equipment for raw materials in paint production and processing features a quick-release assembly. By utilizing the synergistic action of a pressing block, a trapezoidal block, and a second spring, pressing the pressing block causes the trapezoidal block to push the sliding rod and the insert block out of the slot, allowing the insert box to be pulled out. After releasing the pressing block, the second spring resets, allowing the insert block to be reinserted into the slot, ensuring a secure connection. This quick-release assembly has a simple structure, is easy to operate, and facilitates the maintenance and replacement of the sieve plate. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0016] Figure 2 This is a schematic diagram of the rear view of the main body structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of the main body of this utility model;

[0018] Figure 4 This is a top view cross-sectional diagram of the main body of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point B;

[0021] Figure 7 This utility model Figure 5 Enlarged schematic diagram of the structure at point C.

[0022] In the diagram: 1. Pretreatment box; 2. First discharge port; 3. Second discharge port; 4. Feed port; 5. Caster; 6. Rotating rod one; 7. Gear; 8. Drive motor one; 9. Drive motor two; 10. Insertion port; 11. Insertion box; 12. Handle; 13. Connecting plate; 14. Sliding bar; 15. Sliding groove; 16. Mounting frame; 17. Rubber sleeve; 18. Rotating rod two; 19. Cam; 20. Screen plate; 21. Fixing block; 22. Sliding rod; 23. Connecting rod; 24. Trapezoidal block; 25. Pressing groove; 26. Pressing block; 27. Limiting plate; 28. Limiting rod; 29. ​​Limiting groove; 30. Pull rod; 31. Spring one; 32. Spring two; 33. Fixing plate; 34. Sliding tube; 35. Insertion block; 36. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-7 This utility model provides a technical solution: a pretreatment equipment for raw materials in paint production, including a pretreatment box 1. A first discharge port 2 is located at the middle right side of the pretreatment box 1, a second discharge port 3 is located at the bottom left side of the pretreatment box 1, a feed port 4 is located at the top of the pretreatment box 1, an insertion port 10 is located at the rear side of the pretreatment box 1, a insertion box 11 is inserted into the insertion port 10, an installation frame 16 is fixedly connected to the front side of the insertion box 11, a connecting plate 13 is fixedly connected to the left side inside the pretreatment box 1, and a sliding groove 15 is located on the left side of the installation frame 16. A sliding strip 14 is fixedly connected to the right side of plate 13. The sliding strip 14 is slidably connected to the sliding groove 15. A screen plate 20 is hinged to the left side inside the mounting frame 16. The screen plate 20 is set above the first discharge port 2. Limiting grooves 29 are opened through the front and rear sides of the right side of the mounting frame 16. Limiting rods 28 are fixedly connected to the front and rear sides of the right side of the screen plate 20. The two sets of limiting rods 28 are respectively inserted into the limiting grooves 29. A quick-release assembly is installed between the insertion port 10 and the insertion box 11. A vibration assembly is installed at the bottom of the screen plate 20. A crushing assembly is installed at the top of the pretreatment box 1.

[0025] When the raw material pretreatment equipment for coating production is working, the raw material enters from the feed inlet 4 at the top of the pretreatment tank 1. The crushing component at the top of the pretreatment tank 1 crushes the raw material. The crushed raw material falls onto the screen plate 20 hinged on the left side inside the mounting frame 16. The vibration component at the bottom of the screen plate 20 drives the screen plate 20 to vibrate, so that the raw material that meets the requirements passes through the screen plate 20 and is discharged from the first discharge port 2 in the middle of the right side of the pretreatment tank 1. The raw material that does not meet the requirements may be discharged from the second discharge port 3 at the bottom of the left side of the pretreatment tank 1. When it is necessary to process the raw material... When maintaining components such as the screen plate 20, the quick-release assembly between the socket 10 and the insert box 11 can be used to quickly disassemble and assemble the insert box 11. The mounting frame 16 on the front side of the insert box 11 is slidably connected to the sliding strip 14 on the left side connecting plate 13 inside the pretreatment box 1 through the left sliding groove 15, ensuring that the mounting frame 16 moves in a predetermined direction. The limiting rods 28 on the front and rear right sides of the screen plate 20 pass through the limiting grooves 29 on the front and rear right sides of the mounting frame 16, limiting the shaking range of the screen plate 20 and ensuring that the screen plate 20 vibrates and screens stably.

[0026] The quick-release assembly includes a pressing block 26. A pressing groove 25 is provided through the middle of the rear side of the insert box 11. The pressing block 26 is slidably connected to the pressing groove 25. Fixing blocks 21 are fixedly connected to the left and right sides of the interior of the insert box 11. Sliding rods 22 are slidably connected to both sets of fixing blocks 21. Connecting rods 23 are fixedly connected to the ends of the two sets of sliding rods 22 that are close to each other. The two sets of connecting rods 23 are respectively located on the upper and lower sides of the interior of the insert box 11. Trapezoidal blocks 24 are fixedly connected to the other ends of the two sets of connecting rods 23. The front left and right sides of the pressing block 26 abut against the two sets of trapezoidal blocks 24 respectively. Limiting plates 27 are fixedly connected to the upper and lower sides of the pressing block 26. The rear side of the limiting plate 27 abuts against the inner wall of the insert box 11. Fixing mechanisms are provided at the ends of the two sets of sliding rods 22 that are far apart from each other.

[0027] The fixing mechanism includes a plug 35, which is fixedly connected to the end of the sliding rod 22 away from the connecting rod 23. Sliding tubes 34 are provided on both the left and right sides of the insertion box 11. The plug 35 is slidably connected to the sliding tubes 34. A fixing plate 33 is fixedly sleeved on the sliding rod 22. The side of the fixing plate 33 near the plug 35 abuts against the side of the sliding tube 34 away from the plug 35. A second spring 32 is sleeved on the sliding rod 22. The second spring 32 is located between the fixing block 21 and the fixing plate 33. Slots 36 are provided on both the left and right sides of the insertion port 10. The end of the plug 35 near the slot 36 is inserted into the slot 36.

[0028] When it is necessary to disassemble the insertion box 11, press the pressing block 26 into the insertion box 11 so that it slides in the pressing groove 25. The left and right sides of the front of the pressing block 26 abut against the trapezoidal block 24, pushing the two sets of trapezoidal blocks 24 to move away from each other. The trapezoidal block 24 drives the sliding rod 22 to slide on the fixed block 21 through the connecting rod 23, so that the fixed plate 33 on the sliding rod 22 compresses the spring 32. At the same time, the sliding rod 22 drives the insertion block 35 to slide in the sliding tube 34, so that it exits the slot 36 on the left and right sides inside the insertion port 10. When the insertion box 11 is detached from the insertion slot 10, the insertion box 11 can be pulled out of the insertion slot 10. When the insertion box 11 needs to be installed, insert the insertion box 11 into the insertion slot 10, press the pressing block 26 to retract the insertion block 35 into the sliding tube 34. After the insertion box 11 is fully inserted, release the pressing block 26, the spring 22 returns to its original position and pushes the fixing plate 33, so that the sliding rod 22 drives the insertion block 35 into the slot 36, thereby fixing the insertion box 11. The limiting plates 27 on the upper and lower sides of the pressing block 26 abut against the inner wall of the insertion box 11 to prevent the pressing block 26 from disengaging from the pressing groove 25.

[0029] The vibration assembly includes a drive motor 8, which is fixedly installed on the front side of the pretreatment box 1. A rotating rod 18 is rotatably connected between the front and rear sides of the pretreatment box 1. The output shaft end of the drive motor 8 is fixedly connected to the front end of the rotating rod 18. A cam 19 is fixedly sleeved on the rotating rod 18, and the cam 19 is located at the bottom right side of the screen plate 20. A pull rod 30 is fixedly connected to the rear end of the limiting rod 28 located on the rear side. A spring 31 is fixedly connected to the pull rod 30. The other end of the spring 31 is fixedly connected to the bottom side of the inner side of the mounting frame 16.

[0030] After the drive motor 8 starts, its output shaft drives the rotating rod 18 to rotate between the front and rear sides inside the pretreatment box 1. The cam 19, which is fixedly sleeved on the rotating rod 18, rotates accordingly. Since the cam 19 is located at the bottom right side of the screen plate 20, the protruding part of the cam 19 periodically pushes up the right side of the screen plate 20 during rotation, causing the screen plate 20 to swing up and down around its left hinge point. When the protruding part of the cam 19 leaves the screen plate 20, the pull rod 30 located at the rear end of the rear limit rod 28 is pulled by the spring 31 to drive the screen plate 20 to return to its original position, forming vibration. The limit rod 28 on the front and rear sides of the right side of the screen plate 20 slides in the limit groove 29 on the right side of the mounting frame 16, limiting the sway range of the screen plate 20 and ensuring vibration stability.

[0031] The crushing assembly includes a second drive motor 9, which is fixedly installed on the rear side of the pretreatment box 1. Two sets of rotating rods 6 are rotatably connected between the front and rear sides of the pretreatment box 1, and the two sets of rotating rods 6 are respectively located on the bottom left and right sides of the feed inlet 4. The output shaft end of the second drive motor 9 is fixedly connected to the rear end of one set of rotating rods 6. Gears 7 are fixedly sleeved on the front ends of both sets of rotating rods 6, and the two sets of gears 7 mesh with each other. Rubber sleeves 17 are also fixedly sleeved on both sets of rotating rods 6.

[0032] After the drive motor 29 starts, its output shaft drives a set of rotating rods 16 fixedly connected to it to rotate. The gear 7 at the front end of the rotating rod 16 rotates accordingly. Since the gears 7 at the front ends of the two sets of rotating rods 16 mesh with each other, the other set of rotating rods 16 rotates in the opposite direction, causing the rubber sleeves 17 on the two sets of rotating rods 16 to rotate relative to each other. When the raw material falls from the feed port 4 between the two sets of rotating rods 16, it is crushed by the squeezing force and friction generated by the relative rotation of the rubber sleeves 17. The crushed raw material falls onto the screen plate 20 for screening.

[0033] A handle 12 is fixedly connected to the rear side of the insertion box 11 to facilitate pulling out the insertion box 11.

[0034] Casters 5 are installed at the four corners of the bottom of the pretreatment box 1 to facilitate the movement of the equipment.

[0035] Working principle: When the raw material pretreatment equipment for paint production is working, the raw material enters from the feed inlet 4 at the top of the pretreatment box 1. The drive motor 2 9 is started, and its output shaft drives a set of rotating rods 1 6 fixedly connected to it to rotate. The gear 7 at the front end of the rotating rod 1 6 rotates accordingly. Since the gears 7 at the front ends of the two sets of rotating rods 1 6 mesh with each other, the other set of rotating rods 1 6 rotates in the opposite direction, so that the rubber sleeves 17 on the two sets of rotating rods 1 6 rotate relative to each other. When the raw material falls from the feed inlet 4 between the two sets of rotating rods 1 6, it is crushed by the squeezing force and friction generated by the relative rotation of the rubber sleeves 17. The crushed raw material falls onto the screen plate 20 hinged on the left side inside the mounting frame 16. The mounting frame 16 is fixedly connected to the front side of the insertion box 11, and the mounting frame 16 is slidably connected to the sliding strip 14 on the left connecting plate 13 inside the pretreatment box 1 through the left sliding groove 15, which limits the position of the mounting frame 16 inside the pretreatment box 1.

[0036] Simultaneously, drive motor 8 starts, and its output shaft drives rotating rod 18 to rotate between the front and rear sides inside the pretreatment box 1. Cam 19, which is fixedly sleeved on rotating rod 18, rotates accordingly. Since cam 19 is located at the bottom right side of screen plate 20, the protruding part of cam 19 periodically pushes up the right side of screen plate 20 during rotation, causing screen plate 20 to swing up and down around its left hinge point. When the protruding part of cam 19 leaves screen plate 20, the pull rod 30 located at the rear end of the rear limit rod 28 is pulled by spring 31 to reset screen plate 20, forming vibration. The limit rod 28 on the front and rear sides of the right side of screen plate 20 slides in the limit groove 29 on the right side of mounting frame 16, limiting the sway range of screen plate 20 and ensuring vibration stability.

[0037] Raw materials that meet the requirements pass through the sieve plate 20 and are discharged from the first discharge port 2 in the middle right side of the pretreatment box 1. Raw materials that do not meet the requirements may be discharged from the second discharge port 3 at the bottom left side of the pretreatment box 1. When maintenance of the sieve plate 20 is required, since the insert box 11 is inserted into the insert 10, when it is necessary to remove the insert box 11, press the pressing block 26 into the insert box 11 so that it slides in the pressing groove 25. The left and right sides of the front of the pressing block 26 abut against the trapezoidal block 24, pushing the two sets of trapezoidal blocks 24 to move away from each other. The trapezoidal block 24 drives the sliding rod 22 to slide on the fixed block 21 through the connecting rod 23, so that the fixed plate 33 on the sliding rod 22 is compressed. Spring 22, and simultaneously, sliding rod 22 drives insert block 35 to slide inside sliding tube 34, causing it to disengage from slots 36 on the left and right sides inside socket 10. At this time, insert box 11 can be pulled out from socket 10. When insert box 11 needs to be installed, insert box 11 is inserted into socket 10, and pressing pressing block 26 causes insert block 35 to retract into sliding tube 34. After insert box 11 is fully inserted, release pressing block 26, spring 22 returns to its original position and pushes fixing plate 33, causing sliding rod 22 to drive insert block 35 into slot 36, thus fixing insert box 11. Limiting plates 27 on the upper and lower sides of pressing block 26 abut against the inner wall of insert box 11 to prevent pressing block 26 from disengaging from pressing groove 25.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for raw materials used in paint production and processing, comprising a pretreatment tank (1), characterized in that: The pretreatment box (1) has a first discharge port (2) in the middle of the right side, a second discharge port (3) in the bottom left side, a feed port (4) in the top, an insertion port (10) in the rear, a insertion box (11) in which a mounting frame (16) is fixedly connected, a connecting plate (13) in the left side of the interior, a sliding groove (15) in the left side of the mounting frame (16), and a sliding strip (14) in the right side of the connecting plate (13). The sliding bar (14) is slidably connected to the sliding groove (15). The screen plate (20) is hinged to the left side of the inside of the mounting frame (16). The screen plate (20) is set above the first discharge port (2). Limiting grooves (29) are opened through the front and rear sides of the right side of the mounting frame (16). Limiting rods (28) are fixedly connected to the front and rear sides of the right side of the screen plate (20). The two sets of limiting rods (28) are respectively inserted into the limiting grooves (29). A quick-release assembly is installed between the insertion port (10) and the insertion box (11). A vibration assembly is installed at the bottom of the screen plate (20). A crushing assembly is installed at the top of the pretreatment box (1).

2. The pretreatment equipment for raw materials in paint production and processing according to claim 1, characterized in that: The quick-release assembly includes a pressing block (26), and a pressing groove (25) is provided through the middle of the rear side of the insert box (11). The pressing block (26) is slidably connected to the pressing groove (25). Fixing blocks (21) are fixedly connected to the left and right sides inside the insert box (11). Sliding rods (22) are slidably connected to both sets of fixing blocks (21). Connecting rods (23) are fixedly connected to the ends of the two sets of sliding rods (22) that are close to each other. 3) The two sets of connecting rods (23) are respectively set on the upper and lower sides inside the insert box (11). The other end of each set of connecting rods (23) is fixedly connected to a trapezoidal block (24). The front left and right sides of the pressing block (26) abut against the two sets of trapezoidal blocks (24). The upper and lower sides of the pressing block (26) are fixedly connected to a limiting plate (27). The rear side of the limiting plate (27) abuts against the inner wall of the insert box (11). The ends of the two sets of sliding rods (22) that are far apart from each other are provided with a fixing mechanism.

3. The pretreatment equipment for raw materials in paint production and processing according to claim 2, characterized in that: The fixing mechanism includes a plug (35), which is fixedly connected to the end of the sliding rod (22) away from the connecting rod (23). The left and right sides of the insertion box (11) are provided with sliding tubes (34), and the plug (35) is slidably connected to the sliding tubes (34). A fixing plate (33) is fixedly sleeved on the sliding rod (22). The side of the fixing plate (33) close to the plug (35) abuts against the side of the sliding tube (34) away from the plug (35). A second spring (32) is sleeved on the sliding rod (22). The second spring (32) is located between the fixing block (21) and the fixing plate (33). The left and right sides of the inside of the insertion port (10) are provided with slots (36), and the end of the plug (35) close to the slot (36) is inserted into the slot (36).

4. The pretreatment equipment for raw materials in paint production and processing according to claim 1, characterized in that: The vibration assembly includes a drive motor (8), which is fixedly installed on the front side of the pretreatment box (1). A rotating rod (18) is rotatably connected between the front and rear sides of the pretreatment box (1). The output shaft end of the drive motor (8) is fixedly connected to the front end of the rotating rod (18). A cam (19) is fixedly sleeved on the rotating rod (18), and the cam (19) is located at the bottom right side of the sieve plate (20). A pull rod (30) is fixedly connected to the rear end of the limiting rod (28) located on the rear side. A spring (31) is fixedly connected to the pull rod (30), and the other end of the spring (31) is fixedly connected to the bottom side of the mounting frame (16).

5. The pretreatment equipment for raw materials in paint production and processing according to claim 1, characterized in that: The crushing assembly includes a second drive motor (9), which is fixedly installed on the rear side of the pretreatment box (1). Two sets of rotating rods (6) are rotatably connected between the front and rear sides of the pretreatment box (1). The two sets of rotating rods (6) are respectively located on the bottom left and right sides of the feed inlet (4). The output shaft end of the second drive motor (9) is fixedly connected to the rear end of one set of rotating rods (6). Gears (7) are fixedly sleeved on the front ends of both sets of rotating rods (6). The two sets of gears (7) mesh with each other. Rubber sleeves (17) are also fixedly sleeved on both sets of rotating rods (6).

6. The pretreatment equipment for raw materials in paint production and processing according to claim 1, characterized in that: A handle (12) is fixedly connected to the rear side of the insert box (11).

7. The pretreatment equipment for raw materials in paint production and processing according to claim 1, characterized in that: Casters (5) are installed at the four corners of the bottom of the pretreatment box (1).

Images