Powder coating sorting device based on hydroxyalkylamide curing agent composition

Abstract

The utility model is applicable to the technical field of powder coating sorting, and provides a powder coating sorting device based on a hydroxyalkylamide curing agent composition, which comprises a base, a fixed frame fixedly mounted on the base, a discharge groove arranged on the side wall of the base corresponding to the fixed frame, and movable grooves arranged on two opposite side walls of the fixed frame, the device comprises a fixed frame, a movable groove is formed in the fixed frame, a screening frame is slidably connected into the fixed frame through the movable groove, a plurality of screening cavities are sequentially formed in the top wall of the screening frame, and discharging openings communicating with the discharging groove are formed in the bottom walls of the screening cavities. Therefore, different material screening plates are changed to be located in the fixing frame according to powder screening requirements, powder fed by a feeding box subsequently falls into the corresponding screening cavities, and fine powder screening is conducted on the powder through the material screening plates in the screening cavities.

Description

Technical Field

[0001] This utility model belongs to the field of powder coating sorting technology, and in particular relates to a powder coating sorting device based on a hydroxyalkylamide curing agent composition. Background Technology

[0002] Hydroxyalkylamide compounds are recognized as low-toxicity and environmentally friendly compounds, and are now widely used in the fields of daily chemicals, surfactants and coatings. Currently, hydroxyalkylamide systems have gradually replaced carboxylated polyesters / TGICs as the most important component of outdoor powder coating systems.

[0003] Chinese utility model patent CN217615917U discloses a powder sorting device for powder coating processing, comprising a screening box frame, a fixed base fixedly connected inside the screening box frame, a fixed spring fixedly connected to the top of the fixed base, a movable base fixedly connected to one end of the fixed spring, a shaking box fixedly connected to the side of the movable base, a filter screen fixedly connected inside the shaking box, a fixed hole formed inside the filter screen, a vibration motor fixedly connected to the bottom of the shaking box, and a sorting slot inside the screening box frame, with a left discharge port and a right discharge port respectively inside the sorting slot. This utility model, through the cooperation of the fixed spring, movable base, and shaking box, facilitates rapid shaking of the powder to be screened by the operator, thereby simplifying the screening process and preventing powder blockage during screening, which would affect the normal operation of the device.

[0004] However, the above-mentioned device has the following technical problems in actual use:

[0005] 1. The above-mentioned device first uses the filter screen inside the screening box to intercept large-volume impurities when the powder is put into the screening box, and then the powder is discharged through the filter screen. However, if there are too many large-volume impurities mixed in the powder, it will cause the filter screen to be blocked, thereby affecting the feeding speed of the powder.

[0006] Second, when the powder is discharged downward along the filter screen in the above device, a large amount of powder will fall onto the screening rack in a short time. Due to the excessive tilt angle of the screening rack, qualified powder may be carried into the unqualified box by gravity and the flow of subsequent unqualified powder. The above device also lacks a re-screening device, which can easily cause incomplete screening of powder. Utility Model Content

[0007] This invention provides a powder coating sorting device based on a hydroxyalkylamide curing agent composition, aiming to solve the problems mentioned in the background art. When the powder contains too many large-volume impurities, the impurities will accumulate on the filter screen, causing the filter screen to become clogged and affecting the normal flow of subsequent powder. At the same time, due to the excessive tilt angle of the screening frame, qualified powder may be carried into the unqualified box by gravity and the flow of subsequent unqualified powder. The device also lacks a re-screening device, which easily leads to incomplete powder screening.

[0008] This invention is implemented as follows: a powder coating sorting device based on a hydroxyalkylamide curing agent composition includes: a base, a fixed frame fixedly mounted on the base, a feeding box fixedly connected above the fixed frame, a feeding pipe connected to the side wall of the feeding box, a discharge groove opened on the side wall of the base corresponding to the fixed frame, and movable grooves opened on the two opposite side walls of the fixed frame, and a screening frame slidably connected inside the fixed frame through the movable grooves, a plurality of screening chambers sequentially arranged on the top wall of the screening frame, and a discharge port connected to the discharge groove opened on the bottom wall of the screening chamber, each set of screening chambers being horizontally slidable. The device moves into the fixed frame and a return box is set on one side of the fixed frame, which is connected to the fixed frame and the feeding box respectively. A secondary screening assembly is rotatably connected in the return box. The secondary screening assembly is used to return the powder in the screening chamber to the feeding box. In this scheme, the device can drive the screening frame to slide horizontally in the fixed frame by the extension and retraction of the output end of the electric push rod, so as to change different screening plates in the fixed frame according to the screening requirements (moving multiple screening chambers sequentially to the discharge port of the feeding box). The powder fed into the feeding box will fall into the corresponding screening chamber, and the screening plate inside the screening chamber will be used to finely screen the powder.

[0009] It should be explained that during the powder screening process in this device, large-volume impurities will follow the powder through multiple screening plates in sequence. After the screening plates sort and screen the powder, the large-volume impurities remaining in this device will be discharged uniformly to avoid blockage of the discharge port of the feeding box due to excessive impurities.

[0010] In addition, this device is equipped with a return box, which contains a secondary screening assembly. When the powder is discharged from the discharge port of the feeding box and falls onto the screen plate below, it will roll along the inclined screen plate. Qualified powder (meeting the requirements for passing through the screening holes on the screen plate) will fall into the discharge chute below and then enter the collection chamber, while unqualified powder will roll into the conveying pipe through the return port and be returned to the feeding box for secondary screening through the secondary screening assembly, thus avoiding the problem of some qualified powder not falling into the collection chamber.

[0011] Preferably, a screening groove is formed on the top wall of the screening frame, and multiple partitions are fixedly installed at equal intervals along the length of the screening groove. A screening chamber is formed between each pair of adjacent partitions. A screening plate is fixedly installed in each screening chamber, and the screening plate is inclined. A return port is formed on the side wall of the screening frame near the return box of each screening chamber. The height of the end of the screening plate near the return port is lower than the height of the end away from the return port. A support plate is also fixedly connected to the base, and an electric push rod is fixedly connected to the support plate. The output end of the electric push rod is fixedly connected to one side wall of the screening frame. In this scheme, the opposite side walls of the fixed frame... The screen has movable slots at the top, and the screening frame slides in two movable slots. Only one screening chamber can be moved into the fixed frame at a time and positioned below the discharge port of the feeding box. The top of the screening frame is divided into multiple screening chambers by multiple partitions. Each screening chamber has an inclined screening plate fixedly installed. When sorting and screening powder, the screening plates in multiple screening chambers are moved sequentially to the discharge port of the feeding box to finely screen the powder, ensuring that the mixed powder can be screened into the designated collection box. The screen can be pulled closer to or away from the support plate by the extension and retraction of the output end of the electric push rod, thereby changing the position of different screening chambers inside the fixed frame.

[0012] Preferably, in each pair of adjacent screening plates, the screening aperture on the screening plate closer to the electric push rod is larger than that on the screening plate farther from the electric push rod. In this scheme, among the multiple screening chambers in this device, the screening aperture on the screening plate in the screening chamber farther from the electric push rod is the smallest, and the screening aperture on the screening plate in the screening chamber closer to the electric push rod is the largest. In actual operation, the screening chamber with the smallest screening aperture is first moved to the bottom of the fixed frame. The powder discharged from the feeding box first screens the small particles, and then the screening chambers sequentially enter the fixed frame to screen the large particles. After the large particles are screened, the remaining particles are impurities, which can then be easily processed manually.

[0013] Preferably, the bottom outer wall of the return box is provided with a conveying pipe communicating with the inner cavity of the fixed frame, and the top outer wall is provided with a discharge pipe communicating with the feeding box. The secondary screening assembly includes: a vertically rotatably connected spiral conveying rod in the return box, and a first motor fixedly connected to the top wall of the return box. The output end of the first motor is fixedly connected to the top end of the spiral conveying rod. In this scheme, when the powder discharged from the feeding box falls into the screening chamber, the powder falls onto the screen plate and rolls along the inclined surface of the screen plate towards the return port. During the rolling process, qualified powder falls into the collection chamber through the discharge chute, and unqualified powder (which cannot pass through the sieve aperture on the screen plate) enters the return box through the return port and the conveying pipe. Then, the output end of the first motor drives the spiral conveying rod to rotate, and the spiral conveying rod controls the powder to be lifted and discharged into the feeding box through the discharge pipe for secondary screening.

[0014] Preferably, a collection chamber is provided in the base corresponding to the discharge trough, and a collection box is detachably and fixedly connected in the collection chamber. A collection trough is provided on the top wall of the collection box corresponding to the discharge trough. In this scheme, whenever a screening chamber is changed into the fixed frame, the collection box in the collection chamber is manually pulled out and replaced with a new collection box to facilitate the separate collection of different powders.

[0015] Preferably, a discharge control valve is fixedly installed at the bottom discharge port of the feeding box, and an agitator is rotatably connected to the top wall of the feeding box. The agitator includes: a second motor fixedly installed on the top wall of the feeding box; a rotating plate is fixedly connected to the output end of the second motor; one end of the rotating plate extends toward the side wall of the feeding box; and an agitating scraper is fixedly connected to the end of the rotating plate near the inner wall of the feeding box. In this scheme, when the powder is blocked when discharged through the discharge port of the feeding box, the rotation of the output end of the second motor controls the rotation of the rotating plate fixed thereto. The rotating plate controls the rotation of the agitating scraper, which adheres to the inner side wall of the feeding box, and one end extends into the discharge port near the discharge control valve, thereby agitating the powder and avoiding stagnation or blockage.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a powder coating sorting device based on a hydroxyalkylamide curing agent composition.

[0017] 1. This device can drive the screening frame to slide horizontally within the fixed frame by extending and retracting the output end of the electric push rod. This allows different screening plates to be placed within the fixed frame according to the screening requirements (moving multiple screening chambers sequentially to below the discharge port of the feeding box). The powder fed into the feeding box will fall into the corresponding screening chamber, and the screening plates inside the screening chamber will be used to finely screen the powder.

[0018] 2. This device is also equipped with a return box, which contains a secondary screening assembly. When the powder is discharged from the discharge port of the feeding box and falls onto the screen plate below, it will roll along the inclined screen plate. Qualified powder (meeting the requirements for passing through the screening holes on the screen plate) will fall into the discharge chute below and then enter the collection chamber, while unqualified powder will roll into the conveying pipe through the return port and be returned to the feeding box for secondary screening through the secondary screening assembly, thus avoiding the problem of some qualified powder not falling into the collection chamber. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram of the fixing frame and the feeding box in this utility model;

[0021] Figure 3 This is a top view of a partial structure of this utility model;

[0022] Figure 4 This is a top view of the screening frame in this utility model;

[0023] In the picture:

[0024] 1. Base; 11. Fixing frame; 111. Movable groove; 12. Feeding box; 121. Feed pipe; 122. Discharge control valve; 13. Discharge chute; 131. Collection chamber; 14. Collection box; 141. Collection trough;

[0025] 2. Agitator assembly; 21. Second motor; 22. Rotating plate; 23. Agitator scraper;

[0026] 3. Screening frame; 31. Screening chamber; 32. Discharge port; 33. Baffle plate; 34. Screen plate; 35. Return port; 36. Support plate; 37. Electric push rod;

[0027] 4. Return box; 41. Re-screening assembly; 411. Screw conveyor; 412. First motor; 42. Conveying pipe; 43. Discharge pipe. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1-4 This utility model provides a technical solution: a powder coating sorting device based on a hydroxyalkylamide curing agent composition, comprising: a base 1, a fixed frame 11 fixedly mounted on the base 1, a feeding box 12 fixedly connected above the fixed frame 11, a feeding pipe 121 connected to the side wall of the feeding box 12, a discharge groove 13 opened on the side wall of the base 1 corresponding to the fixed frame 11, and movable grooves 111 opened on the two opposite side walls of the fixed frame 11, and the fixed frame 11 slides through the movable grooves 111. A sieving frame 3 is movably connected. Multiple sieving chambers 31 are sequentially arranged on the top wall of the sieving frame 3. A discharge port 32 communicating with the discharge trough 13 is opened on the bottom wall of the sieving chamber 31. Each set of sieving chambers 31 can be horizontally slid into the fixed frame 11. A return box 4 is arranged on one side of the fixed frame 11, which is connected to the fixed frame 11 and the feeding box 12 respectively. A re-sieving assembly 41 is rotatably connected in the return box 4. The re-sieving assembly 41 is used to return the powder in the sieving chamber 31 back to the feeding box 12.

[0034] Specifically, in this device, two support columns are symmetrically fixedly installed on the outer wall of the top of the fixed frame 11. The support columns are set vertically and their top ends are fixed to the side wall of the feeding box 12. The support columns can be used to achieve stable fixation of the feeding box 12.

[0035] Furthermore, a screening groove is provided on the top wall of the screening frame 3, and multiple partitions 33 are fixedly installed at equal intervals along the length of the screening groove. A screening chamber 31 is formed between each pair of adjacent partitions 33. A screening plate 34 is fixedly installed in each screening chamber 31. The screening plate 34 is inclined, and a return port 35 is provided on the side wall of the screening frame 3 near the return box 4 of each screening chamber 31. The height of the end of the screening plate 34 near the return port 35 is lower than the height of the end away from the return port 35. A support plate 36 is also fixedly connected to the base 1. An electric push rod 37 is fixedly connected to the support plate 36. The output end of the electric push rod 37 is fixedly connected to one side wall of the screening frame 3.

[0036] Furthermore, in each pair of adjacent screen plates 34, the screen aperture on the screen plate 34 closer to the electric push rod 37 is larger than the screen aperture on the screen plate 34 farther from the electric push rod 37.

[0037] Furthermore, a conveying pipe 42 communicating with the inner cavity of the fixed frame 11 is provided on the bottom outer wall of the return box 4, and a discharge pipe 43 communicating with the feeding box 12 is provided on the top outer wall. The double screening assembly 41 includes: a vertically rotatably connected spiral conveying rod 411 in the return box 4, a first motor 412 fixedly connected to the top wall of the return box 4, and the output end of the first motor 412 fixedly connected to the top end of the spiral conveying rod 411.

[0038] Furthermore, a collection chamber 131 is provided in the base 1 corresponding to the discharge trough 13, and a collection box 14 is detachably and fixedly connected in the collection chamber 131. A collection trough 141 is provided on the top wall of the collection box 14 corresponding to the discharge trough 13.

[0039] Specifically, a handle can be fixedly installed on the side wall of the collection box 14 in this device. The handle allows the staff to easily pull or push the collection box 14 to move. At the same time, multiple rollers can be fixedly installed on the bottom wall of the collection box 14 to reduce friction when the collection box 14 moves, thereby reducing the workload of manual labor.

[0040] Furthermore, a discharge control valve 122 is fixedly installed at the discharge port at the bottom of the feeding box 12, and an agitation assembly 2 is rotatably connected to the top wall of the feeding box 12. The agitation assembly 2 includes: a second motor 21 fixedly installed on the top wall of the feeding box 12, a rotating plate 22 fixedly connected to the output end of the second motor 21, one end of the rotating plate 22 extending toward the side wall of the feeding box 12, and an agitation scraper 23 fixedly connected to the end of the rotating plate 22 near the inner wall of the feeding box 12.

[0041] Specifically, in this device, when the screening chamber 31 is being replaced, or when the screening is completed and impurities need to be removed, the discharge control valve 122 is closed. At the same time, a waste discharge pipe is connected to the side wall of the feeding box 12 near its discharge port. A regulating valve is fixedly installed on the waste discharge pipe. When it is necessary to discharge impurities, the regulating valve can be opened to discharge the impurities through the waste discharge pipe.

[0042] Working principle and usage process of this utility model:

[0043] The powder is fed into the feeding box 12 through the feed pipe 121. Then, the output end of the electric push rod 37 pushes the screening frame 3 to move, moving the screening chamber 31 with the smallest screening aperture to the fixed frame 11. The discharge control valve 122 is opened, and the powder is conveyed to the screening plate 34. The qualified powder passes through the screening plate 34 and enters the collection tank 141 through the collection chamber 131. The unqualified powder and the powder that has not been screened enter the return box 4 through the return port 35 and the conveying pipe 42. The first motor 412 drives the screw conveyor 411 to rotate, and the powder flows back to the feeding box 12 through the discharge pipe 43 for secondary screening.

[0044] By changing the positions of multiple screening chambers 31 and different collection boxes 14, fine sorting and screening of powders mixed together can be achieved.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder coating sorting device based on a hydroxyalkylamide curing agent composition, characterized in that: include: A base (1) is fixedly installed on the base (1), and a feeding box (12) is fixedly connected above the fixed frame (11). A feeding pipe (121) is connected to the side wall of the feeding box (12). A discharge groove (13) is provided on the side wall of the base (1) corresponding to the fixed frame (11), and movable grooves (111) are provided on the two side walls of the fixed frame (11) that are opposite to each other. A screening frame (3) is slidably connected in the fixed frame (11) through the movable grooves (111). Multiple screening chambers (31) are arranged in sequence on the top wall of the screening frame (3), and a discharge port (32) communicating with the discharge groove (13) is provided on the bottom wall of the screening chamber (31). Each set of screening chambers (31) can be slid horizontally into the fixed frame (11). In addition, a return box (4) is provided on one side of the fixed frame (11), which is connected to the fixed frame (11) and the feeding box (12) respectively. A double screening assembly (41) is rotatably connected inside the return box (4). The double screening assembly (41) is used to return the powder in the screening chamber (31) back to the feeding box (12).

2. The powder coating sorting device based on a hydroxyalkylamide curing agent composition as described in claim 1, characterized in that: The top wall of the screening frame (3) is provided with a screening groove, and multiple partitions (33) are fixedly installed at equal intervals along its length in the screening groove. The screening cavity (31) is formed between each two adjacent sets of partitions (33). Each screening chamber (31) is fixedly installed with a screening plate (34). The screening plate (34) is inclined, and a return port (35) is opened on the side wall of the screening frame (3) on the side of the screening chamber (31) near the return box (4). The height of the end of the screening plate (34) near the return port (35) is lower than the height of the end away from the return port (35). A support plate (36) is also fixedly connected to the base (1), and an electric push rod (37) is fixedly connected to the support plate (36). The output end of the electric push rod (37) is fixedly connected to one side wall of the screening frame (3).

3. The powder coating sorting device based on a hydroxyalkylamide curing agent composition as described in claim 2, characterized in that: In each pair of adjacent screen plates (34), the screen aperture on the screen plate (34) closer to the electric push rod (37) is larger than the screen aperture on the screen plate (34) farther from the electric push rod (37).

4. The powder coating sorting device based on a hydroxyalkylamide curing agent composition as described in claim 1, characterized in that: The bottom outer wall of the return box (4) is provided with a conveying pipe (42) communicating with the inner cavity of the fixed frame (11), and the top outer wall is provided with a discharge pipe (43) communicating with the feeding box (12). The double screening assembly (41) includes: A vertically rotating spiral conveyor rod (411) is connected to the return box (4). A first motor (412) is fixedly connected to the top wall of the return box (4). The output end of the first motor (412) is fixedly connected to the top end of the spiral conveyor rod (411).

5. The powder coating sorting device based on a hydroxyalkylamide curing agent composition as described in claim 1, characterized in that: A collection chamber (131) is provided in the base (1) corresponding to the discharge trough (13). A collection box (14) is detachably and fixedly connected in the collection chamber (131). A collection trough (141) is provided on the top wall of the collection box (14) corresponding to the discharge trough (13).

6. The powder coating sorting device based on a hydroxyalkylamide curing agent composition as described in claim 5, characterized in that: A discharge control valve (122) is fixedly installed at the discharge port at the bottom of the feeding box (12), and an agitator (2) is rotatably connected to the top wall of the feeding box (12). The agitator (2) includes: A second motor (21) is fixedly installed on the top wall of the feeding box (12). A rotating plate (22) is fixedly connected to the output end of the second motor (21). One end of the rotating plate (22) extends toward the side wall of the feeding box (12), and an agitating scraper (23) is fixedly connected to the end of the rotating plate (22) near the inner wall of the feeding box (12).

Images