Powder coating preparation pulverizer based on hydroxyalkylamide curing agent composition

Abstract

The utility model is applicable to the technical field of flour mills, and provides a powder coating preparation flour mill based on a hydroxyalkylamide curing agent composition, which comprises a base, a flour milling box body fixedly mounted on the base, a drying box body communicated and fixedly connected with the top of the flour milling box body, a feeding pipe communicated with the side wall of the drying box body and a flour milling mechanism communicated with the side wall of the drying box body, the upper millstone and the lower millstone are arranged in the milling box body at intervals in the longitudinal direction, a material leakage hole is formed in the top wall of the upper millstone, and the adjusting assembly is arranged on the side wall of the milling box body, movably connected with the upper millstone and used for adjusting the longitudinal height of the upper millstone in the milling box body. The height of the upper millstone can be steplessly adjusted through rotation of the adjusting screw rod in cooperation with the guide rod, the length of the portion, extending out of the grinding box, of the graduated scale is matched, a worker can easily and visually know the distance between the bottom of the upper millstone and the top of the upper millstone, and therefore the device can be freely adjusted according to actual machining requirements.

Description

Technical Field

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

[0002] As people's demands for health and environmental protection increase, although the traditional carboxylated polyester / TGIC (triglycidyl isocyanate) system is homogeneous, stable, and tunable, with good heat and weather resistance that can basically meet user requirements, its strong pungent odor and potential carcinogenicity make its withdrawal from the market inevitable. Hydroxyalkylamide compounds are recognized as low-toxicity and environmentally friendly compounds and are now widely used in daily chemicals, surfactants, and coatings. Currently, hydroxyalkylamide systems have gradually replaced carboxylated polyester / TGIC as the most important component of outdoor powder coating systems.

[0003] Chinese utility model patent CN211636717U discloses a grinding mill for powder coating preparation, comprising a drying chamber and a grinding chamber. The drying chamber is fixedly connected to a feed pipe. One end of the drying chamber near the grinding chamber is bolted to the grinding chamber via a cover. The other end of the drying chamber away from the grinding chamber is fixedly connected to a drive motor. The output shaft of the drive motor is fixedly connected to a rotating shaft. The end of the rotating shaft away from the drive motor is fixedly connected to a lower grinding disc. The lower grinding disc is rotatably connected to the grinding chamber via a support base. The rotating shaft is rotatably connected to an upper grinding disc. The upper grinding disc is slidably connected to the grinding chamber via an adjustment mechanism. The adjustment mechanism includes a handwheel, a transmission component, an adjustment component, and a guide rod. This utility model has a simple structure and is easy to operate. By setting an adjustable grinding mechanism, it effectively improves the grinding efficiency of powder coatings. Simultaneously, the fineness of the grinding can be adjusted according to actual needs, increasing the functionality of the device and improving economic efficiency.

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

[0005] First, the above-mentioned device can only adjust the height of the upper grinding disc according to the position of the multiple adjustment mechanisms opened on the side wall of the upper grinding disc. Due to the fixed position of the adjustment mechanism, the above-mentioned device can only adjust the upper grinding disc to a specific height and cannot infinitely adjust the distance between the upper grinding disc and the lower grinding disc according to the actual grinding requirements.

[0006] Second, in addition, when the powder is fed above the upper grinding disc in the above device, the powder will enter between the upper and lower grinding discs through the feed hole. However, the distance between the upper and lower grinding discs can only allow powder of a specific size to pass through. Powder larger than the specific size will accumulate in the feed hole and above the upper grinding disc. In actual operation, the above device needs to wait for the powder below to be ground to a specific size before the powder above can fall between the upper and lower grinding discs. This grinding method reduces efficiency and requires a lot of processing time. Utility Model Content

[0007] This invention provides a powder coating preparation grinding mill based on a hydroxyalkylamide curing agent composition, aiming to solve the problems mentioned in the background art, such as the inability of the above-mentioned device to infinitely adjust the distance between the upper and lower grinding discs, resulting in a poor user experience. Furthermore, during the powder grinding process, the powder enters between the upper and lower grinding discs sequentially through the feed hole. Only after the powder at the bottom is ground to the specified size and discharged from the lower grinding disc can the powder at the top enter between the upper and lower grinding discs, reducing grinding efficiency and requiring a lot of time.

[0008] This utility model is implemented as follows: a powder coating preparation grinding mill based on a hydroxyalkylamide curing agent composition includes: a base on which a grinding chamber is fixedly mounted, and a drying chamber is fixedly connected to the top of the grinding chamber; a feed pipe is connected to the side wall of the drying chamber; a grinding mechanism having: an upper grinding disc and a lower grinding disc arranged longitudinally at intervals within the grinding chamber; a material leakage hole is opened on the top wall of the upper grinding disc; an adjusting component, which is disposed on the side wall of the grinding chamber and movably connected to the upper grinding disc, for adjusting the longitudinal height of the upper grinding disc within the grinding chamber; and a driving component having... The device includes: a lifting and adjusting component rotatably mounted on the bottom wall of the grinding chamber and fixedly connected to the lower grinding disc; and a rotation control component fixedly installed on the top wall of the drying chamber. The lifting and adjusting component and the rotation control component are movably connected. An annular baffle is also fixedly connected to the bottom wall of the upper grinding disc outside the lower grinding disc. In this design, the height of the upper grinding disc can be infinitely adjusted by adjusting the rotation of the screw and cooperating with the guide rod. The length of the scale extending out of the grinding chamber allows the operator to easily and intuitively understand the distance between the bottom and top of the upper grinding disc, thus allowing the device to be freely adjusted according to actual processing needs.

[0009] It should be explained that when the powder is being ground in this device, the output end of the electric push rod will push the lower grinding disc to rise and fall to a specified height (i.e., the maximum stroke of the output end of the electric push rod). Afterwards, the operator only needs to adjust the height of the upper grinding disc and observe the distance between the upper and lower grinding discs by referring to the reading on the scale.

[0010] In addition, in this device, after the powder is fed onto the upper grinding disc through the discharge port at the bottom of the drying chamber, the output end of the electric push rod drives the lower grinding disc to descend a certain distance (specifically, the lower grinding disc sinks but does not exceed the enclosure range of the annular barrier). At the same time, the first rotating rod moves out from the discharge hole, and the powder on the upper grinding disc falls into the lower grinding disc below through the discharge hole. After all the powder has been fed, the output end of the electric push rod extends to push the lower grinding disc and the first rotating rod back to their original positions, thereby facilitating the discharge of all the powder between the lower and upper grinding discs, effectively improving the powder grinding efficiency and increasing the powder feeding rate.

[0011] Preferably, the adjustment assembly includes: adjustment slots symmetrically formed on the inner walls of both sides of the grinding chamber, each adjustment slot having two fixed blocks fixedly connected longitudinally opposite each other, an adjustment screw rotatably connected between the two fixed blocks on one side, one end of the adjustment screw penetrating to the outer side of the top wall of the grinding chamber, and a guide rod fixedly connected between the two fixed blocks on the other side, a first movable seat screwed to the outer side of the adjustment screw, and a second movable seat slidably connected to the outer side of the guide rod, the first movable seat and the second movable seat being fixed to the two side walls of the upper grinding disc; in this configuration, when the adjustment screw is manually rotated, the first movable seat on the adjustment screw is driven to move up and down between the two fixed blocks, while the second movable seat sliding on the guide rod on the other side drives the upper grinding disc to move up and down, thereby adjusting the height position of the upper grinding disc.

[0012] Preferably, a through hole is provided on the top wall of the grinding chamber, and a scale is fixedly installed on the top wall of the upper grinding disc. The top of the scale passes through the through hole and extends to the outside of the grinding chamber. In this scheme, the distance between the upper and lower grinding discs can be observed manually by the distance the scale extends out of the grinding chamber. The starting scale line (0 scale line) of the scale is located at the top of the scale. When the first moving seat is located at the bottom of the adjusting screw, the length of the scale extending out of the grinding chamber is the shortest distance between the upper and lower grinding discs.

[0013] Preferably, the lifting and adjusting component includes: an electric push rod fixedly installed at the bottom of the base, and a first rotating rod vertically fixedly connected to the lower grinding disc. The bottom end of the first rotating rod is rotatably connected to the output end of the electric push rod, and the top end passes through the material leakage hole. An insert rod is integrally formed and fixedly connected to the top end of the first rotating rod, and a protrusion is provided on the outer wall of the top end of the insert rod. In this scheme, the first rotating rod can be lifted and lowered by extending and retracting the output end of the electric push rod. When the output end of the electric push rod extends, it pushes the lower grinding disc to move upward, and at the same time, the first rotating rod blocks the material leakage hole. Conversely, when the output end of the electric push rod retracts, it pulls the lower grinding disc to move downward, and at the same time, the first rotating rod moves below the material leakage hole, so that the powder can enter the lower grinding disc through the material leakage hole.

[0014] Preferably, the rotation control component includes: a drive motor fixedly installed on the top wall of the drying chamber, a second rotating rod fixedly connected to its output end, a slot for accommodating the insertion rod on the bottom wall of the second rotating rod, and a guide groove for accommodating the protrusion vertically formed on the inner side wall of the slot; in this scheme, when the output end of the drive motor rotates, it drives the second rotating rod to rotate, and when the second rotating rod rotates, it drives the first rotating rod to rotate through the mutual cooperation of the guide groove and the protrusion, and the first rotating rod then controls the rotation of the lower grinding disc to grind the powder between the lower grinding disc and the upper grinding disc.

[0015] Preferably, the discharge hole is located below the outlet end of the drying chamber, and a funnel-shaped guide cavity is formed on the top wall of the upper grinding disc, with the discharge hole located at the bottom of the guide cavity. In this configuration, after the drying chamber dries the powder fed through the feed pipe, the powder is discharged through the outlet at the bottom of the drying chamber and falls onto the top wall of the upper grinding disc below. Subsequently, it gathers at the bottom of the funnel-shaped guide cavity at the top of the upper grinding disc. When the first rotating rod moves out of the discharge hole, the powder can quickly move onto the lower grinding disc through the discharge hole.

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

[0017] 1. By adjusting the rotation of the screw and cooperating with the guide rod, the height of the upper grinding disc can be infinitely adjusted. With the addition of a scale extending beyond the grinding chamber, the distance between the bottom and top of the upper grinding disc can be easily and intuitively understood by the staff, thus allowing the device to be freely adjusted according to actual processing needs.

[0018] 2. In this device, after the powder is fed onto the upper grinding disc through the discharge port at the bottom of the drying chamber, the output end of the electric push rod drives the lower grinding disc to descend a certain distance (specifically, the lower grinding disc sinks but does not exceed the enclosure range of the annular barrier). At the same time, the first rotating rod moves out from the discharge hole, and the powder on the upper grinding disc falls into the lower grinding disc below through the discharge hole. After all the powder has been fed, the output end of the electric push rod extends to push the lower grinding disc and the first rotating rod back to their original positions, thus facilitating the discharge of all the powder between the lower and upper grinding discs, effectively improving the powder grinding efficiency and increasing the powder feeding rate. 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 grinding chamber in this utility model;

[0021] Figure 3 This is a partial schematic diagram of the driving component in this utility model;

[0022] In the picture:

[0023] 1. Base; 11. Grinding chamber; 12. Drying chamber; 121. Feed pipe;

[0024] 2. Grinding mechanism; 21. Upper grinding disc; 211. Material leakage hole; 212. Annular enclosure; 22. Lower grinding disc; 23. Adjustment component; 231. Adjustment groove; 232. Fixing block; 233. Adjustment screw; 234. Guide rod; 235. First moving seat; 236. Second moving seat; 237. Scale; 24. Drive component; 241. Electric push rod; 242. First rotating rod; 243. Insert rod; 244. Protrusion; 245. Drive motor; 246. Second rotating rod; 247. Slot; 248. Guide groove. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Please see Figure 1-3 This utility model provides a technical solution: a powder coating preparation grinding mill based on a hydroxyalkylamide curing agent composition, comprising: a base 1, on which a grinding chamber 11 is fixedly installed, and a drying chamber 12 is fixedly connected to the top of the grinding chamber 11, and a feed pipe 121 is connected to the side wall of the drying chamber 12; a grinding mechanism 2, which has: an upper grinding disc 21 and a lower grinding disc 22 arranged longitudinally at intervals within the grinding chamber 11, and a material leakage hole 211 opened on the top wall of the upper grinding disc 21; and an adjustment component. 23, which is set on the side wall of the grinding chamber 11 and movably connected to the upper grinding disc 21, is used to adjust the longitudinal height of the upper grinding disc 21 inside the grinding chamber 11. The drive assembly 24 has: a lifting adjustment component rotatably set on the inner bottom wall of the grinding chamber 11 and fixedly connected to the lower grinding disc 22, and a rotation control component fixedly installed on the inner top wall of the drying chamber 12. The lifting adjustment component and the rotation control component are movably connected. An annular enclosure 212 is also fixedly connected to the bottom wall of the upper grinding disc 21 outside the lower grinding disc 22.

[0031] Specifically, in this device, heating elements are also fixedly installed on the inner peripheral wall of the drying chamber 12. The heating elements are electrically connected to an external power source. The heat generated after the heating elements are connected to the power source can dry the powder conveyed through the feed pipe 121, thus preventing the powder from sticking due to moisture.

[0032] In addition, a discharge pipe is connected to the bottom wall of the grinding chamber 11, and a discharge valve is fixedly installed on the discharge pipe. After grinding is completed, the powder can be discharged into the external collection equipment by opening the discharge valve, thereby completing the collection of the powder.

[0033] Furthermore, the adjustment assembly 23 includes: adjustment grooves 231 symmetrically opened on the inner walls of both sides of the grinding chamber 11, each adjustment groove 231 having two fixed blocks 232 fixedly connected longitudinally to each other, an adjustment screw 233 rotatably connected between the two fixed blocks 232 on one side, one end of the adjustment screw 233 penetrating to the outer side of the top wall of the grinding chamber 11, and a guide rod 234 fixedly connected between the two fixed blocks 232 on the other side, a first movable seat 235 screwed to the outer side of the adjustment screw 233, and a second movable seat 236 slidably connected to the outer side of the guide rod 234, the first movable seat 235 and the second movable seat 236 being fixedly connected to the two side walls of the upper grinding disc 21.

[0034] Furthermore, a through hole is provided on the top wall of the grinding chamber 11, and a scale 237 is fixedly installed on the top wall of the upper grinding disc 21. The top of the scale 237 passes through the through hole and extends to the outside of the grinding chamber 11.

[0035] Furthermore, the lifting and adjusting components include: an electric push rod 241 fixedly installed at the bottom of the base 1, and a first rotating rod 242 vertically fixedly connected to the lower grinding disc 22. The bottom end of the first rotating rod 242 is rotatably connected to the output end of the electric push rod 241, and the top end passes through the material leakage hole 211. An insert rod 243 is also integrally formed and fixedly connected to the top end of the first rotating rod 242, and a protrusion 244 is provided on the outer wall of the top end of the insert rod 243.

[0036] Furthermore, the rotation control component includes: a drive motor 245 fixedly installed on the top wall of the drying chamber 12, a second rotating rod 246 fixedly connected to its output end, a slot 247 for accommodating the insertion rod 243 is provided on the bottom wall of the second rotating rod 246, and a guide groove 248 for accommodating the protrusion 244 is vertically provided on the inner side wall of the slot 247.

[0037] Furthermore, the material leakage hole 211 is correspondingly located below the outlet end of the drying chamber 12, and a funnel-shaped guide cavity is formed on the top wall of the upper grinding disc 21, with the material leakage hole 211 located at the bottom of the guide cavity.

[0038] Specifically, in this device, a retaining ring is fixedly installed around the top wall of the upper grinding disc 21 located outside the guide cavity. The retaining ring can prevent the powder from splashing when it is put into the guide cavity, thereby avoiding the loss of powder.

[0039] Working principle and usage process of this utility model:

[0040] This device conveys powder into the drying chamber 12 through the feed pipe 121. Heating elements inside the drying chamber 12 heat-dry the powder, removing moisture. The powder then falls onto the upper grinding disc 21. The operator can manually rotate the adjusting screw 233 as needed. The adjustment screw 233, in conjunction with the guide rod 234, drives the upper grinding disc 21 to a specified height. Subsequently, the output end of the electric push rod 241 retracts, pulling the lower grinding disc 22 downwards (without disengaging it from the annular enclosure 212), causing the first rotating rod 242 to exit from the leak... The material hole 211 disengages, and the powder is discharged through the discharge hole 211 between the lower grinding disc 22 and the upper grinding disc 21. Then, the electric push rod 241 pushes the lower grinding disc 22 to move upward. The output end of the drive motor 245 drives the first rotating rod 242 to rotate through the cooperation of the second rotating rod 246, the slot 247 and the guide groove 248. The lower grinding disc 22 rotates below the upper grinding disc 21 to grind the powder. After completion, the output end of the electric push rod 241 pulls the lower grinding disc 22 down to move it out of the range of the annular enclosure 212. The lower grinding disc 22 rotates to discharge the powder.

[0041] 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 paint mill based on a hydroxyalkylamide curing agent composition, characterized by: The utility model relates to a kind of flour mill and drying device, including: Base (1), its upper fixed mounting has mill box (11), and the top of the mill box (11) is connected with dry box (12) of fixed connection, the lateral wall of the dry box (12) is connected with feed pipe (121); Mill mechanism (2), it has: Upper mill disc (21) and lower mill disc (22) are arranged in the mill box (11) along longitudinal direction interval, the top wall of the upper mill disc (21) is provided with material leakage hole (211); Adjusting assembly (23) is arranged on the lateral wall of the mill box (11) and is movably connected with the upper mill disc (21), which is used to adjust the longitudinal height of the upper mill disc (21) in the mill box (11); Drive assembly (24), it has: Rotatably arranged on the bottom wall in the mill box (11), and the lower mill disc (22) is fixedly connected with lifting adjustment component, and the rotating control component is fixedly installed on the top wall in the dry box (12), lifting adjustment component and rotating control component are movably connected, the bottom wall of the upper mill disc (21) outside the lower mill disc (22) is also fixedly connected with annular fence (212).

2. A powder paint mill based on a hydroxyalkylamide curing agent composition according to claim 1, characterized in that: The adjusting assembly (23) includes: Adjusting groove (231) is symmetrically provided on the inner wall of the mill box (11) on both sides, two fixed blocks (232) are fixedly connected in each adjusting groove (231) along longitudinal direction, adjusting screw (233) is rotatably connected between the two fixed blocks (232) on one side, one end of the adjusting screw (233) penetrates to the outside of the top wall of the mill box (11), and the other two fixed blocks (232) are fixedly connected with guide rod (234) between them; First moving seat (235) is screwed on the outside of the adjusting screw (233), and second moving seat (236) is slidably connected on the outside of the guide rod (234), the first moving seat (235) and the second moving seat (236) are fixedly connected on the two side walls of the upper mill disc (21).

3. A powder paint mill for preparing a powder paint based on a hydroxyalkylamide curing agent composition, according to claim 2, characterized in that: A through hole is also provided on the top wall of the mill box (11), and a scale (237) is fixedly installed on the top wall of the upper mill disc (21), the top end of the scale (237) penetrates through the through hole and extends to the outside of the mill box (11).

4. A powder paint mill based on hydroxyalkylamide curing agent composition as claimed in claim 1, wherein: The lifting adjustment component includes: Electric push rod (241) is fixedly installed on the bottom of the base (1), and first rotating rod (242) is fixedly connected on the vertical of the lower mill disc (22), the bottom end of the first rotating rod (242) is rotatably connected with the output end of the electric push rod (241), and the top end penetrates the material leakage hole (211); The top end of the first rotating rod (242) is also integrally formed with a plug rod (243), and a protruding portion (244) is provided on the top end outer wall of the plug rod (243).

5. A powder paint mill based on hydroxyalkylamide curing agent composition as claimed in claim 4, wherein: The rotating control component includes: A driving motor (245) is fixedly installed on the top wall of the drying box (12), and a second rotating rod (246) is fixedly connected to the output end of the driving motor (245). A insertion slot (247) capable of accommodating the insertion rod (243) is formed in the bottom wall of the second rotating rod (246), and a guide slot (248) capable of accommodating the protruding part (244) is formed in the inner side wall of the insertion slot (247).

6. A powder paint mill based on hydroxyalkylamide curing agent composition as claimed in claim 5, wherein: The material leakage hole (211) is correspondingly arranged below the outlet end of the drying box (12), and a guide cavity in the shape of a funnel is formed in the top wall of the upper grinding disc (21), and the material leakage hole (211) is located at the bottom of the guide cavity.

Images