CN112452236B

CN112452236B - Stirring device for producing powder coating

Info

Publication number: CN112452236B
Application number: CN202011340676.7A
Authority: CN
Inventors: 李宏伟; 蔡荣; 李嘉诚; 廖叶根
Original assignee: Deqing County Jinqiu Plastic Powder Co ltd
Current assignee: Deqing County Jinqiu Plastic Powder Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2023-04-07
Anticipated expiration: 2040-11-25
Also published as: CN112452236A

Abstract

The invention relates to the technical field of powder coating production, in particular to a stirring device for producing powder coating, which comprises a stirring barrel, a stirring shaft and a stirring blade, wherein the stirring shaft extends up and down and extends into the stirring barrel, the stirring blade is fixed on the stirring shaft and is used for stirring raw materials, the stirring shaft is also connected with a frosted body which can rotate along with the stirring shaft, and the material mixing effect is good.

Description

Stirring device for producing powder coating

Technical Field

The invention relates to the technical field of powder coating production, in particular to a stirring device for producing powder coating.

Background

The existing stirring equipment for initial powder coating is various in types, and for example, chinese patent with application number of 201510985549.5 discloses a stirring machine, which belongs to the technical field of powder processing. A material mixer comprises a mixing container, wherein the upper end of the mixing container is provided with an opening and a sealing cover, and the lower part of the mixing container is provided with a material outlet; a vane-shaped stirring paddle is arranged in the stirring container, and a flow guide part is arranged at the upper part of the stirring paddle; the inner side wall of the stirring container is also provided with a shearing and crushing part, and the shearing and crushing part comprises a plurality of rotatable shearing sheets and a connecting part for connecting the shearing sheets; the stirring paddle and the shearing and crushing part are driven by a first motor and a second motor to operate respectively.

The existing equipment structure is mainly used for mixing materials, and the materials can be mixed better only by continuously stirring the materials for the second time through the stirrer, but the mixing effect among the materials is not optimized.

Disclosure of Invention

The invention aims to provide a stirring device for producing powder coating, which has a good material mixing effect.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides an agitating unit that production powder coating used, include the agitator, (mixing) shaft that the agitator was extended and stretched into in the agitator from top to bottom with be fixed with on the (mixing) shaft and be used for carrying out the stirring to raw and other materials stirring vane, still be connected with on the (mixing) shaft and follow (mixing) shaft pivoted frosting body.

As a preferable preference for the present invention, a three-dimensional support which can rotate together with the stirring shaft is fixed on the side of the stirring shaft, and a plurality of the sand grinding bodies are assembled on the three-dimensional support.

Preferably, the three-dimensional support comprises an annular fixed ring surrounding the periphery of the stirring shaft and a plurality of linear reinforcing connecting rods which are distributed in a circumferential array and fixedly connected between the annular fixed ring and the stirring shaft.

Preferably, at least one of the annular fixing ring and the linear reinforcing connecting rod is sleeved with the frosting body.

Preferably, at least two circumferential limiting plates distributed at intervals are fixed on the annular fixing ring, and a limiting interval for the circumferential movement of the abrasive body on the annular fixing ring is formed between every two adjacent circumferential limiting plates.

Preferably, at least two linear limiting plates are fixed on the linear reinforcing connecting rod and distributed at intervals, and a limiting interval for the linear movement of the abrasive body on the linear reinforcing connecting rod is formed between every two adjacent linear limiting plates.

Preferably, the straight reinforcing connecting rod extends obliquely downwards from the stirring shaft to the direction away from the stirring shaft.

Preferably, the cross sections of the annular fixing ring and the straight reinforcing connecting rod are circular.

Preferably, the grinding body is a grinding wheel or a grinding disc.

A powder coating production line comprises the stirring device for producing the powder coating.

The invention has the beneficial effects that: 1. the raw materials are mixed more uniformly and thoroughly in the early stage of the production process of the powder coating, and meanwhile, the fusion between the materials is better, so that the improvement of the performance of the powder is not helped;

2. the stirring efficiency can also be improved;

3. the material can be put into the tabletting process quickly.

Drawings

FIG. 1 is a schematic sectional perspective view of a stirring apparatus according to example 1;

fig. 2 is a schematic perspective view of the tablet pressing guide device according to embodiment 2;

FIG. 3 is a schematic perspective view of a tabletting press forming device according to example 3;

FIG. 4 is a schematic perspective view of a cooling apparatus according to embodiment 4;

FIG. 5 is a schematic flow diagram of the production line of example 5 running in process order.

Detailed Description

The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.

Embodiment 1, as shown in fig. 1, a stirring device for producing powder coating, including agitator a, extend from top to bottom and stretch into agitator a's (mixing) shaft a1 and (mixing) shaft a1 is last to be fixed with be used for carrying out the stirring to raw and other materials stirring vane a2, still be connected with on the (mixing) shaft a1 and follow (mixing) shaft a1 pivoted dull polish body a3, the biggest improvement of this embodiment in, when stirring the material, can also carry out the dull polish processing for the surface of raw and other materials has more careful dull polish face, thereby makes the laminating nature between the raw materials that crumbles better, more does benefit to subsequent processing, for example the technology of heating preforming after mixing. The stirring barrel a, the stirring blade a2 and the stirring shaft a1 can be formed by adopting the existing structure.

Further, a three-dimensional support a4 capable of rotating along with the stirring shaft a1 is fixed on the side of the stirring shaft a1, and a plurality of the sand grinding bodies a3 are assembled on the three-dimensional support a 4. The three-dimensional support a4 can promote the intensity of structure, supplies the frosting body a3 uses, has better intensity, and the action that raw and other materials also can be stirred is carried out to three-dimensional support a4 itself and area frosting body a3 simultaneously, and cooperation stirring vane a2 stirs, and efficiency also promotes to some extent.

Preferably, the three-dimensional support a4 comprises an annular fixed ring a41 surrounding the periphery of the stirring axle a1 and a plurality of linear reinforcing connecting rods a42 which are distributed in a circumferential array and fixedly connected between the annular fixed ring a41 and the stirring axle a 1. The annular fixing ring a41 and the stirring shaft a1 can be of a steel structure, the related fixing mode is preferably realized by welding, and the annular fixing ring and the stirring shaft a1 can be installed and fixed in a detachable structural mode such as bolts and nuts.

At least one of the annular fixing ring a41 and the linear reinforcing connecting rod a42 is sleeved with the abrasive body a3.

At least two circumferential limiting plates a5 distributed at intervals are fixed on the annular fixing ring a41, and a limiting interval for the circumferential movement of the abrasive body a3 on the annular fixing ring a41 is formed between every two adjacent circumferential limiting plates a 5. The design of circumference limiting plate a5 makes frosting body a3 can have the mobility in certain extent, receives the restriction again to play better effect, here, adjacent two circumference interval preferably will be greater than frosting body a3 at the size of circumference between the circumference limiting plate a5, makes frosting body a3 can have certain mobility. Similarly, at least two linear position-limiting plates a6 are fixed on the linear reinforcing connecting rod a42, and a limiting space for the linear movement of the grinding body a3 on the linear reinforcing connecting rod a42 is formed between two adjacent linear position-limiting plates a 6.

Preferably, the straight reinforcing connecting rod a42 extends obliquely downwards from the stirring shaft a1 to the direction opposite to the stirring shaft a1, and the structure is further optimized. The cross-sections of the annular fixing ring a41 and the linear reinforcing connecting rod a42 may be circular.

The grinding body a3 can adopt a grinding wheel or a grinding disc.

The stirring device of this embodiment can be used in the production line of producing powder, can regard as a scheme, be a powder coating production line, include the aforesaid stirring device that produces powder coating and use, of course the production line still need include other process units that produce and use, follow-up meeting specifically introduces, here the bottom or the lateral part of agitator a should set up the discharge gate that can open and shut, can directly drop the mixture into receiving parts such as feeder hopper b of preforming guiding device like this, follow-up embodiment about preforming guiding device will specifically introduce.

Embodiment 2, as shown in fig. 2, a tablet guiding device for producing powder coating includes a feeding hopper b, a material conveying device b1 located below the feeding hopper b, and a heating device b2 located at an outlet of the material conveying device b1, the feeding hopper b can receive a mixed material from a stirring device, the material conveying device b1 and the heating device b2 can be implemented by existing common equipment, and melt the mixed material to form a liquid or a colloidal material, the particularity of this embodiment is that a guide for guiding a melted material flow is provided below an outlet of the heating device b2, the guide includes a guide plate b3 extending obliquely to the front and the lower side, a plurality of guide grooves b01 arranged at intervals left and right are provided on an upper surface of the guide plate b3, and the melted material flow into the tablet forming device by effective guiding of the melted material can be distributed at intervals more uniformly, the synchronization is good, and is beneficial to producing a tablet upper surface belt and a convex tablet body, and the molten material flowing out of the guide grooves b01 preferably has a convex portion facing the tablet groove body.

Preferably, the guide plate b3 is formed with a V-shaped collecting groove b02 communicating with inlets on the upper side of all the guide grooves b01 for receiving the molten material flowing down from above. A flow guide bulge b4 arched towards the rear upper arc is formed on the guide plate b3 at the area near the middle of the V-shaped collecting groove b02. The material feeding device has the advantages that the material feeding flow can well convey materials to the guide grooves b01 after entering the guide plate b3, due to the design of the groove type, the paths of the guide grooves b01 on two sides are relatively long, the materials can be guided to the left and right side areas to flow downwards through the arc-shaped edge on the rear upper side of the flow guide protrusion b4, the materials can be guided to the lower side area of the flow guide protrusion b4 to be left in the middle and then fall downwards, and the upper blanking position is the arc-shaped side of the flow guide protrusion b4.

In addition, in view of the difference of the raw materials of different powder coatings, the fluidity after melting is different, and if the material with poor fluidity is designed as follows: the middle area of the flow guide bulge b4 is provided with a middle fast flow channel b40 leading to the guide groove b01 where the middle area of the guide plate b3 is located, so that the problem that the middle thickness of the tabletting is too thin due to too slow material flow in the middle is solved.

Furthermore, a lifting device b5 for lifting is installed and connected on the lower surface of the guide plate b 3. The lifting device b5 can adopt a lifting screw rod, a pneumatic cylinder and other structures. Elevating gear b5 with deflector b3 demountable connection is lived, and the demountable connection also can adopt readily removable formula structures such as current threaded connection, and the convenient change to satisfy the material of different compositions, perhaps satisfy different powder products, can adjust. Further, the lifting device b5 is connected with a traverse device b6 for moving in the horizontal direction, and the traverse device b6, that is, a device capable of moving in the horizontal direction, can be any of the existing pneumatic cylinders and the like.

Preferably, a covering plate b7 capable of covering at least a partial area of the guide groove b01 is laid on the upper side of the guide groove b01 of the guide plate b3, and the covering plate b7 can effectively protect the materials in the guide groove b01 and prevent the materials from overflowing. The cover b7 is detachably mounted on the guide b 3.

The tablet guide device of the present embodiment may also be applied to a powder coating production line, that is, a powder coating production line, including the tablet guide device for powder coating production of the present embodiment, which may be used in cooperation with the tablet guide device of the production line of the other embodiments.

Embodiment 3, as shown in fig. 3, a tabletting extrusion molding device for producing powder coating includes a rear extrusion roller c1 and a front extrusion roller c2 located above and in front of the rear extrusion roller c1, the rear extrusion roller c1 and the front extrusion roller c2 are arranged at intervals and form a compression gap for molten material to flow in and extrude into a sheet structure, annular protrusions c3 arranged at left and right intervals are formed on an outer cylinder wall of the front extrusion roller c2, and an annular groove c4 is formed between two adjacent annular protrusions c 3. The tablet guiding device in embodiment 2 has a molten material flowing out through the guiding groove b01, the flowing molten material is opposite to the compression gap formed between the rear extrusion roller c1 and the front extrusion roller c2, that is, the extrusion forming gap, and the molten material is extruded to form an original tablet with a relatively stable form, and certainly, the tablet needs to be further solidified by subsequent cooling, but the present application is different from the prior art in that the gap is different in shape, because the front extrusion roller c2 forms a structure in which left and right concave-convex structures are sequentially arranged through the annular convex block c3, the shape of the tablet after extrusion forming of the molten material is affected, because the front extrusion roller c2 is designed and the conveyor belt is conveyed forward, the pressing side of the front extrusion roller c2 becomes the upper surface of the tablet, a concave-convex structure corresponding to the external structure of the front extrusion roller c2 is also formed at the upper surface of the tablet, the annular groove c4 of the front extrusion roller c2 is a protrusion of the tablet, and the annular convex block c3 is a groove of the tablet, which is beneficial to what the contact structure of the tablet is, so that the tablet is more uniform in the contact structure, the cooling structure is better in the subsequent cooling, and more beneficial to the crushing and the subsequent cooling effect is better.

Preferably, the height of the front squeeze roller c2 can be adjusted up and down. The height of the rear extrusion roller c1 can be adjusted in a lifting way. The lifting adjustment can be realized by adopting the existing lifting device after installation and connection.

And a convex reinforcing strip c5 extending left and right is formed on the outer cylinder wall of the front extrusion roller c2 at the annular groove c4. The effectiveness of extrusion forming is improved, the contact area can be increased, and the crushing of subsequent tabletting is facilitated. The radial thickness of the convex reinforcing strip c5 is smaller than that of the annular convex block c3, and the effect is better if the convex reinforcing strip c5 is contracted in the annular groove c4.

Furthermore, the areas on the left side and the right side of the front extrusion roller c2 are respectively provided with a dust suction device c6, and the dust suction devices c6 can be the existing dust suction equipment. The left dust collector c6 draws air leftwards, and the right dust collector c6 draws air rightwards. This set up on the one hand and can clear up dust etc. and guarantee the cleanliness factor, on the other hand can utilize wind-force to carry out the preforming at the certain tensile force of left right direction for the preforming effect is better, makes raw and other materials fuse and is favorable to follow-up smashing better.

Preferably, the annular convex piece c3 has a corrugated surface c30 formed on its outer circumferential surface. The surface area can be further increased, and the conveying of the cooling process is also facilitated.

The tablet extrusion molding device of the embodiment can be matched with other devices to be better integrated into a powder coating production line, that is, a powder coating production line comprises the tablet extrusion molding device for producing the powder coating of the embodiment, and of course, the tablet extrusion molding device also comprises other devices such as a tablet guiding device for guiding molten materials to the tablet extrusion molding device, and the various devices in the specification can be matched or integrated for use, so that the applicability is also better.

Embodiment 4, as shown in fig. 4, a cooling device for producing powder coating comprises a conveyor belt d1 for receiving and conveying forward a pressed sheet formed by a pressed sheet extrusion forming device, and cooling rollers d2 arranged above the conveying path of the conveyor belt d1 at intervals in the front-back direction and used for pressing the upper surface of the pressed sheet for rolling and cooling. The particularity of this embodiment lies in realizing through cooling roller d2 roll-in refrigerated mode, compares prior art's forced air cooling, and efficiency is higher, and the cooling effect is better moreover, and the combination between the raw materials is inseparabler, is favorable to subsequent smashing.

Specifically, the outer cylinder wall of the cooling roller d2 is provided with annular reinforcing cooling blocks d3 arranged at left and right intervals, and a cooling limiting groove d4 used for increasing the cooling contact area and capable of being inserted into the protruding part of the upper surface of the tabletting is formed between every two adjacent annular reinforcing cooling blocks d 3. This structural design is exactly the concave-convex structure design of cooperation preforming, can make cooling roller d2 and preforming perfect paste to combine to conduct heat like this, and cooling roller d2 rolls moreover and heat transfer efficiency is high, can accelerate the transport to the preforming again.

Other practical design structures, be provided with condenser tube in the cooling roller d2, condenser tube adopts the reciprocal structure of circulation etc. and all can, and the cooling roller structure among the prior art all can be used. The height of the cooling roller d2 can be adjusted up and down, and the height can be adjusted as required after the cooling roller d2 is connected by adopting the existing lifting device.

Preferably, the conveyor d1 has a steel crawler structure that reciprocates back and forth. The steel track can effectively cool the lower side of the pressing sheet, but heat can be accumulated, further, a tensioning roller d5 upwards abutting against the lower portion of the conveyor belt d1 is arranged below the conveyor belt d1, a cooling water pipe is arranged in the tensioning roller d5, the tensioning roller d5 can not only tension the conveyor belt, but also serve as a cooling roller, so that the conveyor belt can be cooled, and the overall cooling effect is improved. Of course, the tensioning roller d5 is preferably also adjustable in height up and down.

Preferably, the left and right sides of the conveyor belt d1 are provided with limit guide wheels d6 for limiting and guiding the tabletting. Due to the design of the concave-convex structure, the alignment requirement can be better met for better insertion and guiding, so that the limiting guide wheel d6 can better ensure that the position of the pressing sheet accurately advances, the limiting guide wheel d6 can adopt a steel roller, and the heat dissipation can be carried out on the side part when the limiting guide wheel d6 is used relatively.

The cooling device of the embodiment is also an important part of powder coating production, namely a powder coating production line, and comprises the cooling device for producing the powder coating, and the cooling device can be matched with other devices for use.

Example 5, as shown in fig. 5, a powder coating production process comprising the steps of: s1, mixing and stirring raw materials to form a mixed material; s2, heating and melting the mixture; s3, tabletting and forming the molten mixed material through a tabletting device; s4, cooling the pressed sheet by a cooling roller; s5, crushing the cooled tablets for the first time to form fragments; and s6, crushing the fragments, filtering and collecting powder. The first four steps involved can be realized by adopting the device in the specification, so that the effect is very good, the steps s5 and s6 can be realized by adopting the existing structure, the steps s1, s2 and s3 can also adopt the existing structure, however, the step s4 is a special point of the process for cooling the tabletting by the cooling roller, compared with the existing air cooling structure, the cooling mode has better efficiency, the fusion of raw materials can be better, and the subsequent crushing can be easier.

The process is further improved as follows: in the step s1, material frosting is carried out while materials are stirred; in the step s3, pressing the surface of the pressing sheet to form a groove structure which is distributed at intervals at the left and the right; in the step s4, the outer cylinder wall of the cooling roller d2 is provided with annular reinforcing cooling blocks d3 which are arranged at intervals from left to right, and a cooling limiting groove d4 which is used for increasing the cooling contact area and can be inserted into the protruding part of the upper surface of the tabletting is formed between every two adjacent annular reinforcing cooling blocks d 3. This design is possible when using the device of the previous embodiment.

Correspondingly, the powder coating production line applied to the powder coating production process comprises a stirring device, a tabletting guide device, a tabletting extrusion forming device, a cooling device, a coarse crusher m1, a fine crusher m2 and a filtering device m3 which are sequentially arranged along the circulation sequence of the production line, wherein the cooling device comprises a conveying belt d1 for receiving and conveying the tablets formed by the tabletting extrusion forming device forwards and a cooling roller d2 which is arranged above the conveying path of the conveying belt d1 at intervals and is used for pressing the upper surface of the tablet to roll and cool. The main characteristic also lies in the design of cooling device, it all can adopt the technical characterstic in the aforesaid embodiment, and to coarse rubbing crusher, fine crusher, filter equipment, the suggestion can adopt current equipment, because the current technique of these equipment is comparatively ripe, coarse rubbing crusher is exactly tentatively smashes into graininess mechanical equipment, generally the millimeter level is about almost, and fine crusher can smash the following micron order even of millimeter level, be exactly form more fine and smooth powder coating, filter equipment is then more various, all can be applied to this production line.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A powder coating production line is characterized by comprising a stirring device for producing powder coating, wherein the stirring device comprises a stirring barrel (a), a stirring shaft (a 1) which extends up and down and extends into the stirring barrel (a) and a stirring blade (a 2) which is fixed on the stirring shaft (a 1) and is used for stirring raw materials, the stirring shaft (a 1) is also connected with a frosted body (a 3) which can rotate along with the stirring shaft (a 1),

a three-dimensional support (a 4) which can rotate along with the stirring shaft (a 1) is fixed on the side part of the stirring shaft (a 1), and a plurality of the sand grinding bodies (a 3) are assembled on the three-dimensional support (a 4);

the three-dimensional support (a 4) comprises an annular fixed ring (a 41) surrounding the periphery of the stirring shaft (a 1) and a plurality of linear reinforcing connecting rods (a 42) which are distributed in a circumferential array and fixedly connected between the annular fixed ring (a 41) and the stirring shaft (a 1);

at least one of the annular fixing ring (a 41) and the linear reinforcing connecting rod (a 42) is sleeved with the sand grinding body (a 3);

at least two circumferential limiting plates (a 5) which are distributed at intervals are fixed on the annular fixing ring (a 41), and a limiting interval for the circumferential movement of the frosted body (a 3) on the annular fixing ring (a 41) is formed between every two adjacent circumferential limiting plates (a 5);

at least two linear limiting plates (a 6) distributed at intervals are fixed on the linear reinforcing connecting rod (a 42), and a limiting interval for the linear movement of the abrasive body (a 3) on the linear reinforcing connecting rod (a 42) is formed between every two adjacent linear limiting plates (a 6);

the straight line reinforcing connecting rod (a 42) extends downwards from the stirring shaft (a 1) to the direction away from the stirring shaft (a 1) in an inclined way;

the cross sections of the annular fixing ring (a 41) and the linear reinforcing connecting rod (a 42) are circular;

the device comprises a tabletting guide device, a tabletting extrusion forming device, a cooling device, a coarse crusher (m 1), a fine crusher (m 2) and a filtering device (m 3), wherein the cooling device comprises a conveyor belt (d 1) for receiving tablets formed by the tabletting extrusion forming device and conveying the tablets forwards and a cooling roller (d 2) which is arranged above the conveying path of the conveyor belt (d 1) at a front-back interval and used for pressing the upper surface of the tablet to be rolled and cooled, annular reinforcing cooling blocks (d 3) which are arranged at a left-right interval are assembled on the outer cylinder wall of the cooling roller (d 2), a cooling limiting groove (d 4) which is used for increasing the cooling contact area and can be inserted into the convex part of the upper surface of the tablet is formed between every two adjacent annular reinforcing cooling blocks (d 3), the conveying belt (d 1) is of a steel crawler belt structure which can reciprocate back and forth in a circulating manner, a tensioning roller (d 5) which upwards abuts against the lower portion of the conveying belt (d 1) is arranged below the conveying belt (d 1), a cooling water pipe is arranged in the tensioning roller (d 5), the height of the cooling roller (d 2) can be adjusted up and down, the height of the tensioning roller (d 5) can be adjusted up and down, the tabletting extrusion forming device comprises a rear extrusion roller (c 1) and a front extrusion roller (c 2) which is positioned above the rear extrusion roller (c 1), the rear extrusion roller (c 1) and the front extrusion roller (c 2) are arranged at intervals to form a compression gap for molten materials to flow into and be extruded into a sheet structure, annular convex blocks (c 3) which are arranged at left and right intervals are formed on the outer cylinder wall of the front extrusion roller (c 2), and an annular groove (c 4) is formed between every two adjacent annular convex blocks (c 3).

2. A powder coating material production line according to claim 1, characterised in that the abrasive body (a 3) is an abrasive wheel or disc.