Recycling type multiple flour mill

Abstract

The utility model discloses a recovery type multiple flour mill, which relates to the field of powder coatings, and is characterized in that when the quantity of large-particle materials in a screen drum is too large, the screen drum needs to be manually opened for cleaning, and then the cleaned large-particle materials are poured into a matched grinding mechanism for re-grinding and then are continuously sieved; in order to solve the problems that the time for manual cleaning and transferring is long, and the production efficiency needs to be improved, according to the technical scheme, a discharging port is covered with a sealing cover plate capable of being automatically opened and closed, the bottom wall of a shell is communicated with a discharging pipe with a rotationally-arranged pipe opening, the pipe opening of the discharging pipe is aligned to a feeding bin, and the discharging pipe is higher than the feeding bin of the grinding machine. The sealing cover plate is automatically opened to discharge internal large-particle materials, at the moment, the rotary discharging pipe is aligned with the feeding bin of the grinding machine, the large-particle materials are recycled and enter the grinding machine to be ground again, and the effects that the content in the screen drum is rapidly cleaned, recycled and fully ground, and the production efficiency is greatly improved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coatings, in particular to a recycling type multiple grinding machine. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigment, filler and additives. Unlike ordinary solvent-based coatings and water-based coatings, its 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 categories: thermoplastic and thermosetting. Thermoplastic powder coatings have poor coating film appearance (gloss and leveling) and poor adhesion to metal, so they are rarely used in the field of automotive coating. Automotive coating generally uses thermosetting powder coatings. Thermosetting powder coatings use thermosetting synthetic resin as the film-forming material. During the drying process, the resin first melts and then solidifies into a smooth and hard coating film after chemical cross-linking. The coating film appearance, various mechanical properties and corrosion resistance formed by this type of coating can meet the requirements of automotive finishing.

[0003] In the production process of powder coatings, it is necessary to screen them. The screening device generally includes an outer shell, a sealed sieve cylinder fixedly installed inside the sieve cylinder, a feed pipe and an air outlet pipe outside the outer shell, the air outlet pipe is externally connected to the induced draft fan, and a discharge pipe is installed under the shell. The discharge pipe is sealed during screening, and the material in the feed pipe falls into the sieve cylinder for screening under the negative pressure of the fan. Large particles of incompletely ground materials are blocked and collected in the sieve cylinder. The induced draft fan will suck away the ultrafine powder and further collect it. The powder that meets the specifications will fall into the discharge pipe for temporary storage under the action of gravity. After the screening is completed, the discharge pipe is opened to collect the powder that meets the specifications.

[0004] The above-mentioned prior art solutions have the following defects: since large particles of insufficiently ground materials are blocked and collected in the screen drum, when the number of large particles in the screen drum is too large, the screen drum needs to be manually opened for cleaning, and then the cleaned large particles are poured into the matching grinding mechanism for re-grinding and further screening. Manual cleaning and transportation takes a long time, and production efficiency needs to be improved. Utility Model Content

[0005] The utility model aims to provide a recovery type multiple grinding mill.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] It comprises a sealed shell, the outer wall of the shell is connected with a feed pipe and an air outlet pipe, the feed pipe is externally connected to a grinder with a feeding bin, the air outlet pipe is externally connected to an induced draft fan, a sieve cylinder connected to the feed pipe is arranged in the shell, the sieve cylinder is penetrated by a plurality of sieve holes and the inner bottom wall is inclined downward along the gravity direction, a discharge port is penetrated by the lower bottom wall of the sieve cylinder, the discharge port is covered with a sealing cover plate which is automatically opened and closed, a discharge pipe with a rotatable pipe mouth is connected to the bottom wall of the shell, the pipe mouth of the discharge pipe is aligned with the feeding bin, the height of the discharge pipe is higher than the feeding bin of the grinder, and the discharge pipe is equipped with a receiving tank.

[0008] By adopting the above technical solution, the discharge pipe is closed during use, and the screen drum screens the powder coating material input from the feed pipe. The induced draft fan drives the ultra-fine particles in the powder coating through the continuous flow of gas, and the qualified powder coating finished particles are screened out and temporarily stored in the shell, and the large particles are intercepted in the screen drum. When the finished particles are accumulated enough, the induced draft fan is stopped and the discharge pipe is opened to align with the receiving tank to discharge the powder coating product. When the large particles in the screen drum accumulate to a certain amount, the sealing cover automatically opens to discharge the large particles inside. At this time, the discharge pipe is rotated to align with the feeding bin of the grinder, so that the large particles are recycled into the grinder for re-grinding, so as to achieve the effect of quickly cleaning the contents of the screen drum, recycling and fully grinding, and greatly improving production efficiency.

[0009] Furthermore, the sealing cover plate includes a cover plate body, the cover plate body is hingedly arranged on the outer wall of the screen drum, the cover plate body covers the discharge port, an opening and closing motor is fixedly arranged on the outer wall of the screen drum, a sliding block is threadedly connected to the rotating shaft of the opening and closing motor, the sliding block is slidably connected to one end of the cover plate body away from the hinge point, a locking strip is hingedly arranged on a side of the sliding block close to the cover plate body, a fixing block is fixedly arranged on the outer wall of the cover plate body, and the fixing block is provided with a sliding groove for the locking strip to be slidably engaged.

[0010] By adopting the above technical scheme, the opening and closing motor is connected to an external controller or control system for intelligent control. When the large particle material in the screen drum accumulates to a certain amount, the discharge pipe is rotated to align it with the feeding bin of the grinder, and the opening and closing motor is started to drive the sliding block to slide. When the sliding block is away from the hinge point of the cover body, the cover body flips open. At this time, the large particle material inside the screen drum is automatically discharged under the action of gravity, and discharged into the feeding bin of the grinder under the guidance of the discharge pipe for recovery and re-grinding. After the large particle material is recovered, the sliding block approaches the hinge point of the cover body, and the cover body flips and closes to achieve the effect of re-closing the screen drum. The hinged locking strip cooperates with the fixed block. During the movement of the sliding block, the hinge angle and the locking length can be adaptively adjusted according to the displacement distance, and it has a good matching and locking effect.

[0011] Furthermore, a limit block is fixedly provided at the end of the opening and closing motor rotating shaft and the engaging strip.

[0012] By adopting the above technical solution, the limit block has a good limiting effect, which can effectively prevent the sliding block and the locking strip from excessively shifting and falling off and affecting the stable operation of the equipment.

[0013] Furthermore, the discharge pipe includes a pipe body, the pipe body is rotatably connected with a rotating pipe, the rotating pipe body is obliquely arranged, the pipe body is installed with an opening and closing valve for controlling the material discharge, the rotating pipe is arranged to wrap the pipe body, the rotating pipe is threadedly connected and penetrated with a positioning bolt, the positioning bolt is arranged to resist the outer wall of the pipe body, and a turning handle is fixedly arranged on the end of the positioning bolt away from the pipe body.

[0014] By adopting the above technical solution, when in use, the handle is loosened to make the positioning bolt move away from the tube body, thereby releasing the lock between the rotating tube and the tube body, making it easier to rotate the rotating tube. After the rotating tube reaches the specified position, the handle is tightened to start the positioning effect, so as to adjust the discharge direction of the discharge pipe according to production needs. The finished powder coating inside the shell can be smoothly discharged into the receiving tank, or large particle materials can be selectively discharged into the feeding bin of the grinder.

[0015] Furthermore, a recovery pipe is connected to the outer wall of the feeding bin and is inclined upward. A receiving pipe is extended from the receiving tank. The recovery pipe and the receiving pipe openings are matched with the rotating pipe opening. Correction baffles are extended from the edges of the receiving pipe openings and the recovery pipe openings, and the correction baffles are matched with the outer wall of the discharge pipe.

[0016] By adopting the above technical solution, the correcting baffles on the recovery pipe and the receiving pipe have a good auxiliary positioning effect. When the rotating pipe is rotated to fit the correcting baffle, the pipe mouth can be quickly aligned to facilitate smooth discharge. The setting of the recovery pipe and the receiving pipe can accurately dock the discharge pipe to avoid spillage during the discharge process due to the distance between the discharge pipe mouth and the receiving tank or the feeding bin.

[0017] In summary, the beneficial technical effects of the utility model are:

[0018] 1. Automatically opened and closed sealing cover, discharge pipe and feeding bin are used, so as to quickly clean the contents of the screen drum, recycle them and fully grind them, greatly improving production efficiency;

[0019] 2. The opening and closing motor, sliding block, locking strip and fixed block are used, so that the hinge angle and locking length can be adaptively adjusted according to the displacement distance during the movement of the sliding block;

[0020] 3. Recovery pipes, receiving pipes and deviation-correcting baffles are used to avoid spillage during the discharge process due to the long distance between the discharge pipe opening and the receiving tank or the feeding bin, and to quickly align the pipe opening for smooth discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0024] Figure 3 It is an exploded schematic diagram of the overall structure of the utility model;

[0025] Figure 4 yes Figure 3 A magnified schematic diagram of the structure of the middle B section;

[0026] Figure 5 yes Figure 3 Enlarged schematic diagram of the structure of the middle C section;

[0027] Figure 6 It is a schematic diagram of the sealing cover structure in the utility model.

[0028] In the figure, 1, shell; 2, feed pipe; 3, air outlet pipe; 31, induced draft fan; 4, grinder; 41, feeding bin; 5, screen drum; 51, discharge port; 6, sealing cover; 7, discharge pipe; 71, pipe body; 72, rotating pipe; 73, opening and closing valve; 74, positioning bolt; 75, twist handle; 76, recovery pipe; 77, receiving pipe; 78, deviation correction baffle; 8, receiving tank; 9, cover body; 91, opening and closing motor; 92, sliding block; 93, locking strip; 94, fixing block; 95, sliding groove; 96, limit block. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-6, the utility model provides a technical solution:

[0032] The invention comprises a closed shell 1, wherein the outer wall of the shell 1 is connected with a feed pipe 2 and an air outlet pipe 3, the feed pipe 2 is externally connected with a grinder 4 with a feeding bin 41, the air outlet pipe 3 is externally connected with an induced draft fan 31, a screen drum 5 connected with the feed pipe 2 is arranged in the shell 1, a plurality of screen holes are arranged through the screen drum 5, and the inner bottom wall is arranged to be inclined downward along the gravity direction, a discharge port 51 is arranged through the lower bottom wall of the screen drum 5, and the discharge port 51 is covered with a sealing cover plate 6 which is automatically opened and closed, a discharge pipe 7 with a rotatable pipe opening is arranged in the bottom wall of the shell 1, the pipe opening of the discharge pipe 7 is arranged to be aligned with the feeding bin 41, the height of the discharge pipe 7 is higher than the feeding bin 41 of the grinder 4, the discharge pipe 7 is equipped with a receiving tank 8, and the discharge pipe 7 is closed when in use, and the screen drum 5 is connected with the feed input from the feed pipe 2. The powder coating material is screened, the induced draft fan 31 drives the ultra-fine particles in the powder coating through the continuous flow of gas, and the qualified powder coating finished particles are screened out and temporarily stored in the shell 1, and the large particles are intercepted in the screen drum 5. When the finished particles are accumulated enough, the induced draft fan 31 is stopped to open the discharge pipe 7 to align with the receiving tank 8 to discharge the powder coating product. When the large particles in the screen drum 5 accumulate to a certain amount, the sealing cover 6 automatically opens to discharge the large particles inside. At this time, the discharge pipe 7 is rotated to align with the feeding bin 41 of the grinder 4, so that the large particles are recycled into the grinder 4 for re-grinding, so as to achieve the effect of quickly cleaning the contents of the screen drum 5, recycling and fully grinding, and greatly improving the production efficiency. The sealing cover 6 includes a cover body 9. The cover body 9 is hingedly arranged on the outer wall of the screen drum 5. The cover body 9 covers the discharge port 51. An opening and closing motor 91 is fixedly arranged on the outer wall of the screen drum 5. A sliding block 92 is threadedly connected to the rotating shaft of the opening and closing motor 91. The sliding block 92 is slidably connected to the end of the cover body 9 away from the hinge point. A snap-fit ​​strip 93 is hingedly arranged on the side of the sliding block 92 close to the cover body 9. A fixing block 94 is fixedly arranged on the outer wall of the cover body 9. The fixing block 94 is provided with a sliding groove 95 for the snap-fit ​​strip 93 to be slidably connected. The opening and closing motor 91 is connected to an external controller or control system for intelligent control. When a certain amount of large particles of material accumulates in the screen drum 5, the discharge pipe 7 is rotated to align it with the feeding bin 41 of the grinder 4, and the opening and closing motor 91 is started to drive the sliding block 92 slides, when the sliding block 92 is away from the hinge point of the cover body 9, the cover body 9 flips open, and the large particles in the screen drum 5 are automatically discharged under the action of gravity, and are discharged into the feeding bin 41 of the grinder 4 under the guidance of the discharge pipe 7 for recycling and re-grinding. After the large particles are recovered, the sliding block 92 approaches the hinge point of the cover body 9, and the cover body 9 flips and closes to achieve the effect of re-closing the screen drum 5. The hinged snap-fitting strip 93 cooperates with the fixing block 94, and the hinge angle and snap-fitting length can be adaptively adjusted according to the displacement distance during the movement of the sliding block 92, which has a good matching and locking effect. The rotating shaft of the opening and closing motor 91 and the end of the snap-fitting strip 93 are fixedly provided with a limit block 96, and the limit block 96 has a good limiting effect.The cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode, and the cam 77 is a substantially parallel operation mode. The finished powder coating inside the shell 1 is discharged into the receiving tank 8 or the large particle material is selectively discharged into the feeding bin 41 of the grinder 4. The outer wall of the feeding bin 41 is connected to a recovery pipe 76, which is tilted upward. The receiving tank 8 is extended with a receiving pipe 77. The pipe openings of the recovery pipe 76 and the receiving pipe 77 are matched with the pipe opening of the rotating pipe 72. The pipe openings of the receiving pipe 77 and the recovery pipe 76 are extended with a correction baffle 78. The correction baffle 78 is matched with the outer wall of the discharge pipe 7. The correction baffle 78 on the recovery pipe 76 and the receiving pipe has a good auxiliary positioning effect. When the rotating pipe 72 is rotated to fit the correction baffle 78, the pipe opening can be quickly aligned to facilitate smooth discharge. The setting of the recovery pipe 76 and the receiving pipe can accurately dock the discharge pipe 7 to avoid leakage due to the pipe opening of the discharge pipe 7 being too far away from the receiving tank 8 or the feeding bin 41 during the discharge process.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A recycling type multi-grinding mill, comprising a sealed housing (1), wherein the outer wall of the housing (1) is connected with a feed pipe (2) and an air outlet pipe (3), characterized in that: The feed pipe (2) is externally connected to a grinder (4) with a feeding bin (41); the air outlet pipe (3) is externally connected to an induced draft fan (31); a screen drum (5) connected to the feed pipe (2) is provided inside the housing (1); the screen drum (5) is provided with a plurality of screen holes and the inner bottom wall is inclined downward along the gravity direction; a discharge port (51) is provided through the lower bottom wall of the screen drum (5); the discharge port (51) is covered with a sealing cover plate (6) that opens and closes automatically; a discharge pipe (7) is provided on the bottom wall of the housing (1) with a rotatable pipe opening; the pipe opening of the discharge pipe (7) is aligned with the feeding bin (41); the height of the discharge pipe (7) is higher than the feeding bin (41) of the grinder (4); and the discharge pipe (7) is matched with a receiving tank (8).

2. A recovery type multi-mill according to claim 1, characterized in that: The sealing cover plate (6) comprises a cover plate body (9), the cover plate body (9) is hingedly arranged on the outer wall of the screen drum (5), the cover plate body (9) is arranged to cover the discharge port (51), the outer wall of the screen drum (5) is fixedly provided with an opening and closing motor (91), the rotating shaft of the opening and closing motor (91) is threadedly connected with a sliding block (92), the sliding block (92) is slidably connected to the end of the cover plate body (9) away from the hinge point, the sliding block (92) is hingedly provided with a locking strip (93) on a side close to the cover plate body (9), the outer wall of the cover plate body (9) is fixedly provided with a fixing block (94), and the fixing block (94) is provided with a sliding groove (95) for the locking strip (93) to be slidably connected.

3. A recovery type multi-mill according to claim 2, characterized in that: A limiting block (96) is fixedly provided at the end of the rotating shaft of the opening and closing motor (91) and the engaging strip (93).

4. A recovery type multi-mill according to claim 3, characterized in that: The discharge pipe (7) comprises a pipe body (71), the pipe body (71) is rotatably connected with a rotating pipe (72), the main body of the rotating pipe (72) is obliquely arranged, the pipe body (71) is installed with an opening and closing valve (73) for controlling the discharge of materials, the rotating pipe (72) is wrapped around the pipe body (71), the rotating pipe (72) is threadedly connected and penetrated with a positioning bolt (74), the positioning bolt (74) is arranged to abut against the outer wall of the pipe body (71), and a twisting handle (75) is fixedly arranged at one end of the positioning bolt (74) away from the pipe body (71).

5. A recovery type multi-mill according to claim 4, characterized in that: The outer wall of the feeding bin (41) is connected to a recovery pipe (76), the recovery pipe (76) is arranged to be inclined upward, the receiving tank (8) is extended to be provided with a receiving pipe (77), the pipe openings of the recovery pipe (76) and the receiving pipe (77) are arranged to match the pipe opening of the rotating pipe (72), and the edges of the pipe openings of the receiving pipe (77) and the recovery pipe (76) are extended to be provided with a correcting baffle (78), and the correcting baffle (78) is arranged to match the outer wall of the discharge pipe (7).

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