Drying and sieving device for powder coating

Abstract

The utility model discloses a drying and screening device for powder coating, which relates to the technical field of powder screening and comprises a base, a support frame is fixedly arranged above the base, a screen drum is arranged inside the support frame, a fixing frame is fixedly arranged at the bottom end of the screen drum through bolts, and a screen mesh is arranged between the fixing frame and the screen drum. According to the powder coating screening device, the screen drum is arranged, the fixing frame is arranged at the bottom end of the screen drum, and the screen mesh is arranged between the screen drum and the fixing frame, powder coating can be screened in the screen drum, in the screening process, the driving motor on one side of the screen drum can drive the rotating disc to rotate, and the rotating disc can extrude the pressing base through the protruding block so that the pressing base can be compressed to drive the screen drum to horizontally slide; and then the screen drum is reset under the action of the reset spring so as to achieve horizontal reciprocating motion of the screen drum, and in the process, the powder coating shakes in the screen drum so as to improve the screening efficiency of the powder coating.

Description

Technical Field

[0001] The utility model relates to the technical field of powder screening, in particular to a drying and screening device for powder coatings. Background Art

[0002] Powder coatings are solid powder synthetic resin coatings composed of solid resins, pigments, fillers, and additives. Different from ordinary solvent-based coatings and water-based coatings, their dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. Powder coatings are divided into two major categories: thermoplastic and thermosetting. The film appearance (gloss and leveling) of thermoplastic powder coatings is poor, and the adhesion to metals is also poor, so they are rarely used in the field of automotive painting. Automotive painting generally uses thermosetting powder coatings. Thermosetting powder coatings use thermosetting synthetic resins as film-forming substances. During the drying process, the resin first melts and then cures into a flat and hard film through chemical cross-linking. The film appearance, various mechanical properties, and corrosion resistance formed by this kind of coating can all meet the requirements of automotive finishing.

[0003] For example, a powder coating screening device with the publication number CN218502637U includes a bottom plate, a vibrating screen, a screening barrel, a barrel cover, and a motor. The top of the bottom plate is supported by a vertical frame to set a screening barrel. The top of the screening barrel is open, and the open position is detachably connected with a barrel cover. The bottom of the screening barrel is communicated with a discharge pipe. A hopper is arranged on the top of the barrel cover. A motor seat is fixed in the middle of the top surface of the barrel cover. A motor is assembled on the motor seat. A rotating shaft is arranged on the output shaft of the motor. Turbulence plates are evenly fixed on the inner wall of the screening barrel. A screen with screen holes is detachably connected to the inner wall of the screening barrel. The utility model adopts the method of driving the extrusion blades to rotate, so that the extrusion blades cooperate with the turbulence plates on the inner wall of the screening barrel to crush the materials, thereby realizing the crushing of large pieces of materials, enabling the large pieces of materials to pass through the screen, and at the same time, it also adopts a replaceable screen, so as to be able to adjust the screening accuracy.

[0004] The above technical solution has some problems in practical applications. In the process of screening powder coatings, this technical solution improves the screening efficiency by means of rolling. However, some materials will block the screen holes during the rolling process, affecting the subsequent treatment effect.

[0005] Therefore, it is very necessary to invent a drying and screening device for powder coatings to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a drying and screening device for powder coatings to solve the problems put forward in the above background art.

[0007] To achieve the above object, the present utility model provides the following technical solution: A drying and sieving device for powder coatings, including a base, a support frame is fixedly arranged above the base, a sieve cylinder is arranged inside the support frame, a fixing frame is fixedly arranged at the bottom end of the sieve cylinder through bolts, a sieve mesh is arranged between the fixing frame and the sieve cylinder, two groups of symmetrically distributed connecting seats are fixedly arranged on the outer side wall of the sieve cylinder, one end of a group of connecting seats is fixedly provided with a pressing seat, and the pressing seat is arranged in an arc structure, one end of the support frame is movably arranged with a turntable through a bearing, a plurality of bumps are arranged around the outer side wall of the turntable, the bumps are arranged in an arc structure and correspond to the pressing seat, a driving motor is fixedly arranged at one end of the lower surface of the support frame, and the output shaft of the driving motor is fixedly connected to the middle of the turntable. Both ends of the pressing seat are fixedly provided with sliding rods, and two sliding grooves corresponding to the sliding rods are penetrated and opened on the upper surface of the support frame.

[0008] Preferably, one end of the other group of connecting seats is movably provided with a movable arm through a pin shaft, one end of each of the two movable arms is movably provided with a connecting arm through a pin shaft, and the connecting arm is movably arranged inside the support frame through a pin shaft.

[0009] Preferably, one end of each of the two connecting arms close to each other is movably provided with an extension seat through a pin shaft, and a return spring is fixedly arranged between the two extension seats.

[0010] Preferably, a receiving tray is fixedly arranged in the middle of the upper surface of the base.

[0011] Preferably, an extension frame is fixedly arranged at the top end of the support frame, and a feeding hopper is fixedly arranged in the middle of the extension frame.

[0012] Preferably, a guiding cover is arranged between the bottom end of the feeding hopper and the top end of the sieve cylinder, and the guiding cover is arranged as a flexible cloth cover.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. By setting the sieve cylinder in the present utility model, a fixing frame is arranged at the bottom end of the sieve cylinder, and a sieve mesh is arranged between the sieve cylinder and the fixing frame. The powder coating can be sieved inside the sieve cylinder. During the sieving process, the driving motor on one side of the sieve cylinder can drive the turntable to rotate. The turntable can squeeze the pressing seat through the bumps, so that the compression drives the sieve cylinder to slide horizontally, and then the sieve cylinder is reset under the action of the return spring to realize the horizontal reciprocating movement of the sieve cylinder. During this process, the powder coating shakes inside the sieve cylinder to improve its sieving efficiency;

[0015] 2. The utility model is provided with a feeding hopper above the sieve cylinder, and a material guiding cover is arranged between the feeding hopper and the sieve cylinder. The material guiding cover is set as a flexible cloth cover. During the sieving process of the powder material, the feeding hopper can play an auxiliary feeding role, and the setting of the material guiding cover can ensure that the material can smoothly enter the sieve cylinder during the movement of the sieve cylinder, thereby ensuring the continuity of the material sieving. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic sectional view of the overall structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the sieve cylinder structure of the utility model.

[0019] In the figure: 1. Base; 2. Support frame; 3. Sieve cylinder; 4. Fixed frame; 5. Sieve mesh; 6. Connecting seat; 7. Pressing seat; 8. Turntable; 9. Convex block; 10. Driving motor; 11. Slide bar; 12. Chute; 13. Movable arm; 14. Connecting arm; 15. Extension seat; 16. Return spring; 17. Receiving tray; 18. Extension frame; 19. Feeding hopper; 20. Material guiding cover. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides a drying and sieving device for powder coatings as Figures 1-3 shown, which includes a base 1. A support frame 2 is fixedly arranged above the base 1. A sieve cylinder 3 is arranged inside the support frame 2. A fixed frame 4 is fixedly arranged at the bottom end of the sieve cylinder 3. A sieve mesh 5 is arranged between the fixed frame 4 and the sieve cylinder 3, and the sieve mesh 5 can realize the sieving of the powder coatings;

[0022] Specifically, two groups of symmetrically distributed connecting seats 6 are fixedly arranged on the outer side wall of the sieve cylinder 3. One end of a group of connecting seats 6 is fixedly provided with a pressing seat 7, and the pressing seat 7 is set as an arc-shaped structure. One end inside the support frame 2 is movably provided with a turntable 8 through a bearing. A plurality of convex blocks 9 are arranged around the outer side wall of the turntable 8. The convex blocks 9 are set as arc-shaped structures, and the convex blocks 9 correspond to the pressing seat 7. One end of the lower surface of the support frame 2 is fixedly provided with a driving motor 10, and the output shaft of the driving motor 10 is fixedly connected to the middle of the turntable 8;

[0023] More specifically, sliding rods 11 are fixedly arranged at both ends of the pressing seat 7. Two sliding grooves 12 corresponding to the sliding rods 11 are penetratingly formed on the upper surface of the support frame 2. The sliding grooves 12 cooperate with the sliding rods 11 to ensure the stability of the horizontal sliding of the pressing seat 7;

[0024] Moreover, one end of another set of connecting seats 6 is movably provided with a movable arm 13 through a pin shaft. One ends of the two movable arms 13 are both movably provided with connecting arms 14 through pin shafts. And the connecting arms 14 are movably arranged inside the support frame 2 through pin shafts. One ends of the two connecting arms 14 close to each other are both movably provided with extension seats 15 through pin shafts. A return spring 16 is fixedly arranged between the two extension seats 15. The sieve cylinder 3 drives the movable arms 13 and the connecting arms 14 to move. The connecting arms 14 drive the extension seats 15 to move, so that the return spring 16 between the two extension seats 15 is compressed. Then the return spring 16 undergoes a restoring deformation, causing the sieve cylinder 3 to slide horizontally and reset;

[0025] Furthermore, a material receiving tray 17 is fixedly arranged in the middle of the upper surface of the base 1. An extension frame 18 is fixedly arranged at the top of the support frame 2. A feeding hopper 19 is fixedly arranged in the middle of the extension frame 18. A material guiding cover 20 is arranged between the bottom end of the feeding hopper 19 and the top end of the sieve cylinder 3. And the material guiding cover 20 is arranged as a flexible cloth cover. The material guiding cover 20 can guide the material to ensure that the material can fall into the sieve cylinder 3.

[0026] Working principle of the present utility model:

[0027] When the device is in use, the powder coating to be sieved is put into the sieve cylinder 3 through the feeding hopper 19 and the material guiding cover 20, and the driving motor 10 is started. The driving motor 10 drives the turntable 8 to rotate. The turntable 8 presses the pressing seat 7 through the convex block 9, causing the pressing seat 7 to drive the sieve cylinder 3 to slide horizontally. During this process, the sieve cylinder 3 drives the movable arms 13 and the connecting arms 14 to move. The connecting arms 14 drive the extension seats 15 to move, so that the return spring 16 between the two extension seats 15 is compressed. After the convex block 9 is separated from the pressing seat 7, the return spring 16 undergoes a restoring deformation, causing the sieve cylinder 3 to slide horizontally and reset. The driving motor 10 works continuously, causing the sieve cylinder 3 to maintain a horizontal reciprocating motion to realize continuous sieving treatment of the powder coating.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A drying and sieving device for powder coatings, comprising a base (1), characterized in that: Above the base (1), a support frame (2) is fixedly arranged. Inside the support frame (2), a sieve cylinder (3) is arranged. At the bottom end of the sieve cylinder (3), a fixing frame (4) is fixedly arranged by bolts. Between the fixing frame (4) and the sieve cylinder (3), a sieve mesh (5) is arranged. On the outer side wall of the sieve cylinder (3), two symmetrically distributed connecting seats (6) are fixedly arranged. At one end of a group of the connecting seats (6), a pressing seat (7) is fixedly arranged, and the pressing seat (7) is arranged in an arc structure. At one end inside the support frame (2), a turntable (8) is movably arranged through a bearing. On the outer side wall of the turntable (8), a plurality of convex blocks (9) are arranged in a surrounding manner. The convex blocks (9) are arranged in an arc structure and correspond to the pressing seat (7). At one end of the lower surface of the support frame (2), a driving motor (10) is fixedly arranged, and the output shaft of the driving motor (10) is fixedly connected to the middle of the turntable (8). At both ends of the pressing seat (7), sliding rods (11) are fixedly arranged. On the upper surface of the support frame (2), two sliding grooves (12) corresponding to the sliding rods (11) are penetrated and opened.

2. The drying and sieving device for a powder coating according to claim 1, wherein: At one end of the other group of the connecting seats (6), a movable arm (13) is movably arranged through a pin shaft. At one end of each of the two movable arms (13), a connecting arm (14) is movably arranged through a pin shaft, and the connecting arm (14) is movably arranged inside the support frame (2) through a pin shaft.

3. The drying and sieving device for a powder coating according to claim 2, wherein: At one end of each of the two connecting arms (14) close to each other, an extension seat (15) is movably arranged through a pin shaft. Between the two extension seats (15), a return spring (16) is fixedly arranged.

4. The drying and sieving device for a powder coating according to claim 3, characterized in that: In the middle of the upper surface of the base (1), a material receiving tray (17) is fixedly arranged.

5. The drying and sieving device for a powder coating according to claim 4, characterized in that: At the top end of the support frame (2), an extension frame (18) is fixedly arranged. In the middle of the extension frame (18), a feeding hopper (19) is fixedly arranged.

6. The drying and sieving device for a powder coating according to claim 5, characterized in that: Between the bottom end of the feeding hopper (19) and the top end of the sieve cylinder (3), a guiding cover (20) is arranged, and the guiding cover (20) is arranged as a flexible cloth cover.

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