Multi-stage screening device for polyester powder coating
By designing a multi-stage screening device, the connecting rod and linkage components drive the screen plate to vibrate. Combined with the slide plate and guide plate, this solves the problem of limited screening effect of traditional screening devices and achieves efficient screening and particle size control of polyester powder coatings.
Patent Information
- Application Number
- CN202520142762.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Traditional polyester powder coating screening devices use a single-layer screening plate, which has limited screening effect and is difficult to meet the requirements of coating particle size diversity. In addition, when screening a large amount of coating at one time, it is easy to accumulate, resulting in poor screening efficiency.
A multi-stage screening device is designed, which uses an upper and lower screen plate installed at an angle. A connecting rod and a linkage component drive the screen plate to vibrate. Combined with a sliding plate and a guide plate, the relative motion between the powder coating and the screen plate is enhanced, preventing screen hole clogging and improving screening effect and efficiency.
Vibration promotes the dispersion and flow of powder coatings, prevents sieve clogging, improves screening accuracy and efficiency, extends the service life of sieve plates, avoids coating waste, and meets the screening requirements of different particle sizes.
Smart Images
Figure CN223800949U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to polyester powder coating production technical field especially a kind of multistage screening device for polyester powder coating. BACKGROUND
[0002] Polyester powder coating is widely used in many fields due to its excellent performance. For example, in the automobile industry, it is used for coating of automobile body and parts; in the furniture industry, it is used for decoration and protection of wooden furniture and metal furniture; in the household appliance industry, it is used for coating of refrigerator, washing machine and other household appliances.
[0003] In the production process of polyester powder coating, accurate screening of the particle size of the coating is an important link to ensure the quality of the coating. Traditional screening devices often use single-layer screening plates, and the screening effect is limited, which cannot meet the requirements of the diversity of coating particle size. To solve these problems, some improved screening devices begin to use multi-stage screening structure to improve screening accuracy and efficiency by increasing the number of screening stages. However, these devices often screen a large amount of polyester powder coating at one time, which makes the coating accumulate on the screen plate and reduces the screening efficiency.
[0004] Therefore, the utility model provides a multistage screening device for polyester powder coating to solve the above technical problems. SUMMARY
[0005] The utility model aims at solving the defects in the prior art and provides a multistage screening device for polyester powder coating.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0007] A multistage screening device for polyester powder coating includes a box, an upper screen plate and a lower screen plate are rotatably installed inside the box, the upper screen plate and the lower screen plate are both inclinedly installed inside the box, the inclination directions of the upper screen plate and the lower screen plate are opposite, the upper screen plate is located above the lower screen plate, discharge ports are provided at the left and right ends of the box, the two discharge ports are respectively located at the ends of the upper screen plate and the lower screen plate, a feed hopper is fixedly installed at the top of the box, a control feeding assembly is installed in the feed hopper, two arc-shaped grooves are provided at the front and rear ends of the box, the upper ends of the upper screen plate and the lower screen plate are respectively slidingly installed in the arc-shaped grooves, connecting rods are rotatably installed at the front and rear ends of the box, the upper ends of the upper screen plate and the lower screen plate are respectively connected to the ends of the connecting rods, a linkage assembly is installed between the control feeding assembly and one of the connecting rods, a collection drawer is slidingly installed inside the box, and the collection drawer is located below the lower screen plate.
[0008] As a preferred technical scheme of the utility model, the control feeding assembly includes a rotating shaft, the rotating shaft is rotatably installed on the inner wall of the two ends of the feeding hopper, a plurality of discharging plates are uniformly installed on the rotating shaft, a motor is fixedly installed on the outer wall of the box body, and the output end of the motor is fixedly connected with one end of the rotating shaft through the box body.
[0009] As a preferred technical scheme of the utility model, the linkage assembly includes a rotating disc, the rotating disc is fixedly installed on the end of the rotating shaft away from the motor, a first connecting piece is fixedly installed on the rotating disc, a second connecting piece is fixedly installed on the connecting rod on the same side of the linkage assembly, and a swing rod is rotatably installed between the first connecting piece and the second connecting piece.
[0010] As a preferred technical scheme of the utility model, the connecting rod is composed of a first rod body part and two second rod body parts, the first rod body part is rotatably installed on the box body, one end of each of the two second rod body parts is rotatably installed on the upper end of the upper sieve plate and the lower sieve plate respectively, and the other end of each of the two second rod body parts is slidably installed on the two ends of the first rod body part.
[0011] As a preferred technical scheme of the utility model, a sliding plate is fixedly installed in the box body, the sliding plate is located between the upper sieve plate and the lower sieve plate, and the inclination direction of the sliding plate is the same as that of the upper sieve plate.
[0012] As a preferred technical scheme of the utility model, a guide plate is fixedly installed in the box body, and the guide plate is located between the sliding plate and the lower sieve plate.
[0013] As a preferred technical scheme of the utility model, baffles are fixedly installed on the front and back ends of the upper sieve plate, the lower sieve plate and the sliding plate.
[0014] As a preferred technical scheme of the utility model, a plurality of rollers are uniformly installed on the sliding plate, and the two ends of each roller are rotatably installed on two baffles respectively.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] The utility model converts the rotary motion of the control feeding assembly into the reciprocating vibration of the sieve plate through the setting of the connecting rod and the linkage assembly, the vibration action can enhance the relative motion between the powder coating and the sieve plate, promote the dispersion and flow of the powder coating on the sieve plate, further improve the screening effect, and the vibration action can also prevent the sieve hole from being blocked and prolong the service life of the sieve plate;
[0017] The utility model discloses a slide plate and guide plate are set up, make powder coating can be more fully with lower sieve plate contact, improve the accuracy and efficiency of screening, avoid the situation that powder falls directly from the upper end of upper sieve plate to the lower end of lower sieve plate, and the situation that the powder that has not been carefully screened by lower sieve plate directly passes discharge port and is discharged. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will be to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, the following description in the drawing is the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.
[0019] Figure 1 The whole structure diagram of a multistage screening device for polyester powder coating is provided for the utility model Figure 1 ;
[0020] Figure 2 The whole structure diagram of a multistage screening device for polyester powder coating is provided for the utility model Figure 2 ;
[0021] Figure 3 It is the close-up view of A in Figure 2 ;
[0022] Figure 4 It is the cross-sectional view of the box body in the utility model
[0023] Figure 5 It is the split schematic view of the feed hopper and control feed assembly in the utility model.
[0024] In the drawing:
[0025] Box body;2, upper sieve plate;3, lower sieve plate;4, discharge port;5, feed hopper;6, control feed assembly;601, pivot;602, blanking plate;603, motor;7, arc slot;8, connecting rod;9, linkage assembly;901, rotary disc;902, first connecting piece;903, second connecting piece;904, swing lever;10, collection drawer;11, first rod body part;12, second rod body part;13, slide plate;14, guide plate;15, baffle;16, roller. DETAILED DESCRIPTION
[0026] The technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment;
[0027] Refer to Figures 1-5The utility model provides a multistage screening device for polyester powder paint, including the box 1, the upper sieve plate 2 and the lower sieve plate 3 are rotatably installed in the box 1, the upper sieve plate 2 and the lower sieve plate 3 are all installed in the box 1 and are opposite to the inclination direction, and the upper sieve plate 2 is located above the lower sieve plate 3, and the screen hole radius of the upper sieve plate 2 is greater than the screen hole radius of the lower sieve plate 3, which can screen polyester powder paint of different particle sizes, and the left and right ends of the box 1 are provided with discharge ports 4, and the two discharge ports 4 are located at the ends of the upper sieve plate 2 and the lower sieve plate 3 respectively, which are used to screen polyester powder paint of different particle sizes, and the top of the box 1 is fixedly provided with a feeding hopper 5, and the feeding hopper 5 is provided with a control feeding assembly 6, which is responsible for adjusting the feeding speed and quantity to ensure the stability and efficiency of the screening process, and the front and rear ends of the box 1 are provided with two arc grooves 7, and the upper ends of the upper sieve plate 2 and the lower sieve plate 3 are slidably installed in the arc grooves 7, and the front and rear ends of the box 1 are rotatably provided with connecting rods 8, and the two ends of the connecting rod 8 are connected with the upper ends of the upper sieve plate 2 and the lower sieve plate 3 respectively, and the control feeding assembly 6 and one of the connecting rods 8 are provided with a linkage assembly 9, and the box 1 is slidably provided with a collection drawer 10, and the collection drawer 10 is located below the lower sieve plate 3.
[0028] The linkage assembly 9 connects the control feeding assembly 6 and one of the connecting rods 8, which can drive the connecting rod 8 to rotate when the control feeding assembly 6 works, and then drives the upper sieve plate 2 and the lower sieve plate 3 to slide in the arc grooves 7, realizes the reciprocating motion of the screening plate, and enhances the screening effect; the polyester powder paint enters the box 1 through the feeding hopper 5, is first screened on the upper sieve plate 2, the larger particles are screened out and discharged through the upper discharge port 4, the smaller particles after the screening of the upper sieve plate 2 continue to slide to the lower sieve plate 3 for further screening, the medium particles are discharged through the lower discharge port 4, and the smaller powder paint finally falls into the collection drawer 10 through the lower sieve plate 3 for collection; the screen hole sizes of the upper sieve plate 2 and the lower sieve plate 3 are different, which can be adjusted according to actual needs to adapt to the screening requirements of different particle sizes.
[0029] The control feeding assembly 6 includes a rotating shaft 601 rotatably installed on the inner walls of the front and rear ends of the feeding hopper 5, which serves as the installation basis and rotation center of the discharge plate 602, a plurality of discharge plates 602 are uniformly installed on the rotating shaft 601 for dispersing and falling the material when the rotating shaft 601 rotates, and a motor 603 is fixedly installed on the outer wall of the box 1, and the output end of the motor 603 is fixedly connected with one end of the rotating shaft 601 through the box 1 to provide power for the rotation of the rotating shaft 601.
[0030] When the motor 603 starts, its output end drives the rotating shaft 601 to rotate, and the rotating shaft 601 in turn drives the blanking plate 602 to move in a circular motion. The blanking plate 602 disperses and drops the material from the feeding hopper 5 to the upper end of the upper sieve plate 2, realizes the continuous and uniform dropping of the material, and improves the blanking efficiency.
[0031] The linkage assembly 9 comprises a rotating disc 901 fixedly installed at the end of the rotating shaft 601 away from the motor 603, which is a core component of the linkage assembly 9 and is used for transmitting and converting the rotating motion. The rotating disc 901 is fixedly installed with a first connecting piece 902, the connecting rod 8 on the same side of the linkage assembly 9 is fixedly installed with a second connecting piece 903, and the first connecting piece 902 and the second connecting piece 903 are rotatably installed with a swing rod 904 for transmitting and converting the rotating motion.
[0032] When the motor 603 starts, its output end drives the rotating shaft 601 to rotate, and the rotating shaft 601 in turn drives the rotating disc 901 to rotate. The rotating motion of the rotating disc 901 is transmitted to one end of the swing rod 904 through the first connecting piece 902, and the other end of the swing rod 904 is connected with the connecting rod 8 through the second connecting piece 903, so as to convert the rotating motion into swing motion, thereby driving the two ends of the connecting rod 8 to swing up and down along the two arc-shaped grooves 7, and driving the vibration of the upper sieve plate 2 and the lower sieve plate 3, which can better screen the powder coating.
[0033] The connecting rod 8 is composed of a first rod body part 11 and two second rod body parts 12. The first rod body part 11 is rotatably installed on the box body 1, one end of each of the two second rod body parts 12 is rotatably installed at the upper end of the upper sieve plate 2 and the lower sieve plate 3 respectively, and the other end of each of the two second rod body parts 12 is slidably installed at the two ends of the first rod body part 11. The movement of the connecting rod 8 drives the upper sieve plate 2 and the lower sieve plate 3 to swing up and down along the two arc-shaped grooves 7. Since the distance between the upper sieve plate 2 and the lower sieve plate 3 changes slightly during the movement, the sliding design between the first rod body part 11 and the two second rod body parts 12 makes the swing of the connecting rod 8 more stable.
[0034] The inside of the box body 1 is fixedly installed with a sliding plate 13, which is located between the upper sieve plate 2 and the lower sieve plate 3, and the inclination direction of the sliding plate 13 is the same as that of the upper sieve plate 2. When the powder coating falls from the sieve holes of the upper sieve plate 2, it will fall on the sliding plate 13 and continue to flow along the inclination direction of the sliding plate 13, so as to fall on the upper end of the lower sieve plate 3, so that the powder can be more fully contacted with the lower sieve plate 3, thereby improving the accuracy and efficiency of screening, avoiding the situation that the powder directly falls from the upper end of the upper sieve plate 2 to the lower end of the lower sieve plate 3 without being carefully screened by the lower sieve plate 3 and directly discharged through the discharge port 4; The inside of the box body 1 is fixedly installed with a guide plate 14, which is located between the sliding plate 13 and the lower sieve plate 3. The design of the guide plate 14 ensures that the powder coating flowing from the end of the sliding plate 13 can better fall on the upper end of the lower sieve plate 3, avoiding falling directly from the gap between the lower sieve plate 3 and the box body 1 into the collection drawer 10, reducing the waste of powder coating and improving the resource utilization rate of the screening process.
[0035] The front and rear ends of the upper sieve plate 2, the lower sieve plate 3 and the sliding plate 13 are fixedly installed with baffles 15 to prevent the powder coating from overflowing or leaking from the edges of the sieve plate during the screening process; A plurality of rollers 16 are uniformly installed on the sliding plate 13, and the two ends of the roller 16 are rotatably installed on the two baffles 15, respectively. The rolling action of the roller 16 promotes the flow and screening of the powder coating on the sliding plate 13, so that the powder coating can uniformly flow to the lower sieve plate 3, avoiding the accumulation of the powder coating on the sliding plate 13 and directly flowing to the lower sieve plate 3.
[0036] Working principle: when the device is in use, the polyester powder coating to be screened is first poured into the box body 1 through the feeding hopper 5, and at the same time, the motor 603 is started, the motor 603 drives the rotating shaft 601 to start rotating, and then drives the discharging plate 602 to perform circular motion, the discharging plate 602 disperses the polyester powder coating from the feeding hopper 5, ensuring that the polyester powder coating can continuously and uniformly fall to the upper end of the upper sieve plate 2, the polyester powder coating falling on the upper sieve plate 2 is subjected to screening, since the sieve hole radius of the upper sieve plate 2 is larger than that of the lower sieve plate 3, larger particles will be screened out and discharged through the upper discharge port 4, smaller particles after preliminary screening continue to slide onto the sliding plate 13, the powder coating falling on the sliding plate 13 continues to flow along its inclination direction, the roller 16 ensures that the powder coating can uniformly flow to the lower sieve plate 3, avoiding accumulation and direct flow, the guide plate 14 ensures that the powder coating can better fall on the upper end of the lower sieve plate 3, medium particles are discharged through the lower discharge port 4, and smaller powder coating is finally collected into the collection drawer 10 through the lower sieve plate 3;
[0037] When the motor 603 rotates, the motor 603 drives the rotating disc 901 to rotate through the rotating shaft 601, the rotation of the rotating disc 901 is transmitted to one end of the swing rod 904 through the first connecting piece 902, the other end of the swing rod 904 is connected with the connecting rod 8 through the second connecting piece 903, so that the rotary motion is converted into the swing motion, thereby driving the two ends of the connecting rod 8 to swing up and down along the two arc-shaped grooves 7, that is, the vibration of the upper sieve plate 2 and the lower sieve plate 3 can be driven, and the powder coating can be better screened.
[0038] Those of ordinary skill in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest the scope (including claims) of the present application is limited to these examples; under the thought of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.
[0039] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, and equivalents that fall within the spirit and scope of the present application are intended to be included within the scope of the present application.
Claims
1. A multi-stage screening device for polyester powder coatings, characterized in that, The utility model provides a kind of double-screening device, including box (1), upper sieve plate (2) and lower sieve plate (3) are rotatably installed in the box (1), the upper sieve plate (2) and the lower sieve plate (3) are obliquely installed in the box (1), and the oblique direction of the upper sieve plate (2) and the lower sieve plate (3) is opposite, the upper sieve plate (2) is located above the lower sieve plate (3), the left and right ends of the box (1) are all provided with discharge port (4), two the discharge port (4) is located at the end of the upper sieve plate (2) and the lower sieve plate (3) respectively, the top of the box (1) is fixedly installed with feed hopper (5), control feeding assembly (6) is installed in the feed hopper (5), two arc grooves (7) are provided in the front and rear ends of the box (1), the upper end of the upper sieve plate (2) and the lower sieve plate (3) is slidably installed in the arc groove (7) respectively, the front and rear ends of the box (1) are rotatably installed with connecting rod (8), the upper end of the upper sieve plate (2) and the upper end of the lower sieve plate (3) are connected respectively at the two ends of the connecting rod (8), linkage assembly (9) is installed between the control feeding assembly (6) and one of the connecting rod (8), collecting drawer (10) is slidably installed in the box (1), and the collecting drawer (10) is located below the lower sieve plate (3).
2. A multi-stage screening device for polyester powder paint according to claim 1, characterized in that, The control feeding assembly (6) includes a rotating shaft (601), the rotating shaft (601) is rotatably installed on the inner wall of the front and rear ends of the feed hopper (5), a plurality of discharge plates (602) are uniformly installed on the rotating shaft (601), a motor (603) is fixedly installed on the outer wall of the box (1), and the output end of the motor (603) is fixedly connected with one end of the rotating shaft (601) through the box (1).
3. A multi-stage screening device for polyester powder paint according to claim 2, characterized in that, The linkage assembly (9) includes a rotating disc (901), the rotating disc (901) is fixedly installed on the end of the rotating shaft (601) away from the motor (603), a first connecting piece (902) is fixedly installed on the rotating disc (901), a second connecting piece (903) is fixedly installed on the connecting rod (8) on the same side of the linkage assembly (9), and a swing rod (904) is rotatably installed between the first connecting piece (902) and the second connecting piece (903).
4. A multi-stage screening device for polyester powder paint according to claim 3, characterized in that, The connecting rod (8) is composed of a first rod body (11) and two second rod bodies (12), the first rod body (11) is rotatably installed on the box (1), one end of the two second rod bodies (12) is rotatably installed on the upper end of the upper sieve plate (2) and the lower sieve plate (3) respectively, and the other end of the two second rod bodies (12) is slidably installed on the two ends of the first rod body (11).
5. A multi-stage screening device for polyester powder paint according to claim 4, characterized in that, The inside of the box (1) is fixedly installed with a sliding plate (13), the sliding plate (13) is located between the upper sieve plate (2) and the lower sieve plate (3), and the oblique direction of the sliding plate (13) is the same as the oblique direction of the upper sieve plate (2).
6. A multi-stage screening device for polyester powder paint according to claim 5, characterized in that, The inside of the box (1) is fixedly provided with a guide plate (14), which is located between the slide plate (13) and the lower sieve plate (3).
7. A multi-stage screening device for polyester powder paint according to claim 6, characterized in that, The front and rear ends of the upper sieve plate (2), the lower sieve plate (3) and the slide plate (13) are fixedly provided with baffle plates (15).
8. A multi-stage screening device for polyester powder paint according to claim 7, characterized in that, A plurality of rollers (16) are uniformly arranged on the slide plate (13), and both ends of the roller (16) are rotatably arranged on the two baffle plates (15).