Device and process for preparing outdoor durable powder coating

Abstract

The invention belongs to the technical field of coating production, and particularly discloses an outdoor durable powder coating preparation device and a preparation process thereof.The outdoor durable powder coating preparation device comprises a bridging column, a mixing barrel is fixed to the top of the bridging column, a discharging sleeve is arranged at the bottom of the bridging column, and a stirring device is arranged at the top of the bridging column; a transmission cavity penetrating to the bottom is formed in the bridging column, and a material conveying assembly is arranged in the transmission cavity. According to the device, a powder coating and a liquid solvent are injected into the material mixing barrel through the feeding pipe, then the material conveying assembly is driven to work through the driving shaft, and when the material conveying assembly works, stirred fluid in the material mixing barrel can be intermittently conveyed into the discharging sleeve; and then the stirring device is driven to stir the interior of the material mixing barrel while the material conveying assembly works, and the pneumatic assembly is driven to work to atomize and spray out fluid flowing out of the material conveying assembly, so that coated fine particles generated during material mixing are crushed.

Description

Technical Field

[0001] The present invention relates to the technical field of coating production, in particular to a device for preparing outdoor durable powder coating and a preparation process thereof. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigments, fillers and additives. When powder coating is used outdoors, it is necessary to improve the durability of the coating. Therefore, liquid stabilizers need to be mixed into the powder coating during production to ensure that the chemical properties of the coating are stable during use, thereby improving its durability.

[0003] Currently, when powder coatings are mixed with liquid solvents, since the powder coatings are in dry powder form, and some of the molecules in the substances mixed into the powder coatings have hydrophobic groups that make them tend to avoid water molecules and aggregate together, the outer molecules will absorb water and swell to form a sticky gelatin layer after agglomeration, blocking the water molecules from the outside, while the powder coated inside cannot come into contact with water and remains dry, so many coated fine particles will be formed. These coated particles will form bulges or depressions on the coating surface during subsequent application, making the coating surface uneven. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides an outdoor durable powder coating preparation device and a preparation process thereof.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for preparing outdoor durable powder coatings, comprising a bridge column, a mixing drum fixed to the top of the bridge column, a discharge sleeve provided at the bottom of the bridge column, a stirring device provided at the top of the bridge column, a transmission cavity extending from the bottom of the bridge column, and a material transport assembly provided within the transmission cavity;

[0006] A top cover is provided between the tops of the mixing barrels, and a feed pipe connected to the bottom is fixed to the top of the top cover near the edges on both sides, a pressing groove is provided at the bottom of the bridging column and the top of the discharge sleeve, and a flange ring is fixed to the outer surface of the bridging column near the bottom edge and the outer surface of the discharge sleeve near the top edge.

[0007] Preferably, the stirring device includes a stirring shaft, which is rotatably connected to the top of the bridging column, and the bottom of the stirring shaft extends into the transmission cavity. A driven bevel gear is fixed to the bottom of the stirring shaft, and a plurality of stirring rods are equidistantly arranged on the outer surface of the stirring shaft near the top edge. A spiral blade is fixed to the outer surface of the stirring shaft near the bottom edge. Three support rods are fixed in the middle of the outer surface of the stirring shaft, and a scraper is fixed at one end of the three support rods, and the outer surface of one side of the three scrapers is slidably fitted with the inner wall of the mixing barrel.

[0008] Preferably, the material transport assembly includes a reciprocating column, a pneumatic assembly is provided inside the reciprocating column near one side edge, the reciprocating column is slidably connected between the inner walls of the transmission cavity, the bottom of the reciprocating column extends between the inner walls of the discharge sleeve, the rear inner wall of the transmission cavity is rotatably connected with a driving bevel gear, the driving bevel gear and the driven bevel gear are meshed with each other, the top of the reciprocating column is concave, a fixing rod is installed inside the concave shape of the reciprocating column, a connecting rod is fixed on the front side of the driving bevel gear near the outer surface edge, a rocker rod is rotatably provided on the outer surface of the connecting rod, the bottom end of the rocker rod is rotatably connected to the fixed rod, and a driving shaft is provided on the outer surface of the bridging column, one end of the driving shaft slides through the interior of the transmission cavity and is connected to the driving bevel gear.

[0009] Preferably, a storage cavity is provided near the bottom of the reciprocating column, a conical groove is provided inside the reciprocating column above the storage cavity, a material guide tube is fixed to the inner bottom surface of the storage cavity, the top of the material guide tube is connected to the bottom conical surface of the conical groove, a spray port is provided near the bottom edge of the outer surface of the other side of the reciprocating column, a discharge hole is provided on the inner wall of one side of the spray port, one end of the discharge hole passes through the interior of the storage cavity and is located on the inner side of the material guide tube.

[0010] Preferably, the outer surface of the guide tube is provided with a plurality of side openings extending to the interior near the bottom edge, a sealing slide is slidably connected between the outer surface of the guide tube and the inner wall of the storage cavity, a limiting ring is fixed between the inner walls of the storage cavity near the top edge, the sealing slide is located below the limiting ring, and the inner top surface of the storage cavity is provided with a plurality of throttling holes equidistantly along the circumferential direction.

[0011] Preferably, an annular groove is provided between the inner walls of the transmission cavity near the bottom, a sealing ring is fixed to the outer surface of the reciprocating column, the sealing ring is slidably connected between the inner walls of the annular groove, the outer surface of the sealing ring is slidingly sealed against the inner wall of the annular groove, a relief cavity is provided on the inner bottom surface of the annular groove, a support ring is fixed between the inner walls of the annular groove near the bottom edge, one end of each of the throttling holes passes through the outer surface of the reciprocating column and is located below the sealing ring.

[0012] Preferably, the inner wall of the conical groove is provided with a plurality of second grid openings equidistantly near the top edge and extending through the outer surface of the reciprocating column, the inner wall of the bridging column is provided with a cache cavity located outside the transmission cavity, the inner wall of the cache cavity is provided with a plurality of first grid openings near the bottom edge, and the plurality of first grid openings are connected to each other corresponding to the second grid openings, and the inner top surface of the cache cavity is provided with a plurality of feed holes extending through the top of the bridging column.

[0013] Preferably, the pneumatic component includes a touch rod, an adjustment chamber is opened inside the reciprocating column, the touch rod is located inside the adjustment chamber, one end of the touch rod slides through the outer surface of the reciprocating column, an adjustment block is fixed on the outer surface of the touch rod, the adjustment block is slidably connected between the inner walls of the adjustment chamber, a through hole is opened at the top of the adjustment block near one side edge and passes through to the bottom, and a spring is fixed between the outer surface of one side of the adjustment block and the inner wall of the adjustment chamber.

[0014] The top of the discharge nozzle is provided with a hole, and the bottom of the discharge nozzle is provided with a hole, and the bottom of the discharge nozzle is provided with a hole.

[0015] The present invention also provides a process for preparing an outdoor durable powder coating, which is applied to an outdoor durable powder coating preparation device. The process for preparing an outdoor durable powder coating comprises the following steps:

[0016] Step S1: Powder coating and liquid solvent are injected into the interior of the mixing barrel through the feed pipe, and then the driving shaft drives the material transport component to work. When the material transport component is working, it can intermittently send the fluid stirred in the mixing barrel into the interior of the discharge sleeve. Then, while the material transport component is working, it also drives the stirring device to stir the interior of the mixing barrel, and also drives the pneumatic component to atomize and spray the fluid flowing out of the material transport component, thereby breaking up the coated fine particles generated during mixing;

[0017] Step S2: When the material transport component is working, when the reciprocating column slides to the upper side, it is in the state of absorbing materials. Since the spray port will slide to the inner wall of the discharge sleeve when the reciprocating column slides up at the beginning, the spray port will be sealed with the inner wall of the discharge sleeve. When the sealing ring slides from the bottom to the top inside the annular groove, negative pressure will be generated at the bottom of the sealing ring, the annular groove and the inside of the relief cavity. When the sealing ring slides to the top of the annular groove, the first grid port and the second grid port are connected to each other. At this time, under the suction force of the negative pressure, the sealing slide plate is adsorbed from the inner bottom surface of the storage cavity to the upper limit ring through the throttling hole. During the adsorption process, the fluid material can enter the interior of the conical groove from the first grid port and the second grid port, and then enter the interior of the storage cavity through the guide pipe and the side port;

[0018] Step S3: When the stirring device is working, since the driving bevel gear and the driven bevel gear are meshed with each other, when the driving bevel gear rotates, the driven bevel gear rotates, and then the stirring shaft rotates. When the stirring shaft rotates, the stirring rod, spiral blades and scraper rotate. The stirring rod and spiral blades can stir the material inside the mixing barrel, and the scraper can scrape off the fluid material attached to the inner wall of the mixing barrel to prevent adhesion.

[0019] Step S4: When the pneumatic component is working, when the reciprocating column slides downward to the initial state, one end of the feeler rod will first slide between the inner walls of the discharge sleeve, and the side hole will be closed through the inner wall of the discharge sleeve. At the same time, the feeler rod together with the adjustment block will be pushed into the adjustment cavity, thereby cutting off the bending hole and the side hole from each other, and the inner flow channel and the exhaust hole will be connected to each other through the through hole. At this time, the spray port and the inner wall of the discharge sleeve are sealed, so as the reciprocating column slides downward, the middle part of the eardrum will be driven to slide downward, and the air inside the closed cavity formed between the bottom of the eardrum and the top of the discharge sleeve will be compressed through the eardrum. When the reciprocating column slides to the bottom, the spray port is connected with the open part of the inner wall of the discharge sleeve. At this time, the compressed air can flow to the bottom of the discharge hole through the inner flow channel and the exhaust hole, and the fluid material flowing out of the discharge hole is atomized and blown.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention injects powder coating and liquid solvent into the interior of the mixing barrel through a feed pipe, and then drives the material transport component to work through a drive shaft. When the material transport component is working, it can intermittently deliver the fluid stirred in the mixing barrel into the interior of the discharge sleeve. Then, while the material transport component is working, it also drives the stirring device to stir the interior of the mixing barrel, and also drives the pneumatic component to atomize and spray the fluid flowing out of the material transport component, thereby breaking up the coated fine particles generated during mixing;

[0022] 2. In the present invention, when the stirring device is working, the rotation of the stirring shaft drives the stirring rod, spiral blades and scraper to rotate. The stirring rod and spiral blades can stir the materials inside the mixing barrel, and the scraper can scrape off the fluid materials attached to the inner wall of the mixing barrel to prevent adhesion.

[0023] 3. In the present invention, when the material transport component is working, it is in a material absorbing state when the reciprocating column slides upward. Since the spray port will slide to the inner wall of the discharge sleeve when the reciprocating column slides upward at the beginning, the spray port will be sealed with the inner wall of the discharge sleeve. When the sealing ring slides from the bottom to the top inside the annular groove, negative pressure will be generated at the bottom of the sealing ring, the annular groove and the inside of the buffer chamber. When the sealing ring slides to the top of the annular groove, the first grid port and the second grid port are connected to each other. At this time, under the suction effect of the negative pressure, the sealing slide plate is adsorbed from the inner bottom surface of the storage chamber to the upper limit ring through the throttling hole. During the adsorption process, the fluid material can enter the interior of the conical groove from the first grid port and the second grid port, and then enter the interior of the storage chamber through the guide pipe and the side port.

[0024] 4. In the present invention, when the pneumatic component is working, when the reciprocating column slides downward to the initial state, one end of the feeler rod will first slide between the inner walls of the discharge sleeve, and the side hole will be closed by the inner wall of the discharge sleeve. At the same time, the feeler rod together with the adjustment block will be pushed into the adjustment cavity, thereby cutting off the bending hole and the side hole from each other, and the inner flow channel and the exhaust hole will be connected to each other through the through hole. At this time, the spray port and the inner wall of the discharge sleeve are sealed, so as the reciprocating column slides downward, the middle part of the eardrum will be driven to slide downward, and the air inside the closed cavity formed between the bottom of the eardrum and the top of the discharge sleeve will be compressed through the eardrum. When the reciprocating column slides to the bottom, the spray port is connected with the open part of the inner wall of the discharge sleeve. At this time, the compressed air can flow to the bottom of the discharge hole through the inner flow channel and the exhaust hole, and the fluid material flowing out of the discharge hole is atomized and blown. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention provides a schematic diagram of the main perspective structure of a device for preparing outdoor durable powder coatings;

[0026] Figure 2 The present invention provides a schematic diagram of a side-sectional perspective structure of a device for preparing outdoor durable powder coatings;

[0027] Figure 3 This is a schematic diagram of the other side cross-sectional perspective structure of a device for preparing outdoor durable powder coatings proposed by the present invention;

[0028] Figure 4 The present invention provides a schematic diagram of a cross-sectional three-dimensional structure of a bridging column in a device for preparing outdoor durable powder coatings;

[0029] Figure 5The present invention provides a schematic cross-sectional perspective structural diagram of a reciprocating column in a device for preparing outdoor durable powder coatings;

[0030] Figure 6 For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0031] Figure 7 For the present invention Figure 4 A partial enlarged view of point B in the middle;

[0032] Figure 8 For the present invention Figure 5 A magnified partial view of point C in the middle.

[0033] In the figure: 1, bridging column; 2, discharge sleeve; 3, mixing barrel; 4, top cover; 5, feed pipe; 6, flange ring; 7, drive shaft; 8, stirring shaft; 9, stirring rod; 10, scraper; 11, support rod; 12, spiral blade; 13, transmission chamber; 14, driven bevel gear; 15, driving bevel gear; 16, feed hole; 17, buffer chamber; 18, reciprocating column; 19, rocker arm; 20, fixed rod; 21, connecting rod; 22, annular groove; 23, press-fit groove; 24, sealing ring; 25, tapered groove; 26 , spring; 27, first grid opening; 28, second grid opening; 29, material guide tube; 30, storage chamber; 31, side opening; 32, injection port; 33, discharge hole; 34, exhaust hole; 35, sealing slide; 36, limit ring; 37, throttling hole; 38, support ring; 39, relief chamber; 40, eardrum; 41, annular opening; 42, locking ring; 43, air inlet; 44, bending hole; 45, inner flow channel; 46, regulating chamber; 47, touch rod; 48, regulating block; 49, through hole; 50, side hole. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] See also Figure 1-8 The present invention provides a technical solution: a device for preparing outdoor durable powder coatings, comprising a bridge column 1, a mixing drum 3 fixed to the top of the bridge column 1, a discharge sleeve 2 provided at the bottom of the bridge column 1, a stirring device provided at the top of the bridge column 1, a transmission cavity 13 extending through the bottom of the bridge column 1, and a material transport component provided inside the transmission cavity 13;

[0036] A top cover 4 is provided between the tops of the mixing barrel 3, and a feed pipe 5 connected to the bottom is fixed to the top of the top cover 4 near the edges on both sides. A pressing groove 23 is provided at the bottom of the bridging column 1 and the top of the discharge sleeve 2, and a flange ring 6 is fixed to the outer surface of the bridging column 1 near the bottom edge and the outer surface of the discharge sleeve 2 near the top edge.

[0037] The effect achieved is that the powder coating and liquid solvent are injected into the interior of the mixing barrel 3 through the feed pipe 5, and then the material transport component is driven to work by the drive shaft 7. When the material transport component is working, the fluid stirred inside the mixing barrel 3 can be intermittently sent into the interior of the discharge sleeve 2. Then, while the material transport component is working, it will also drive the stirring device to stir the inside of the mixing barrel 3, and will also drive the pneumatic component to atomize and spray the fluid flowing out of the material transport component, thereby breaking up the coated fine particles produced during mixing. The dry powder inside the broken fine particles will quickly dissolve in the atomized fluid under the action of the airflow jet.

[0038] like Figure 2 and Figure 3 As shown, the stirring device includes a stirring shaft 8, which is rotatably connected to the top of the bridging column 1, and the bottom of the stirring shaft 8 passes through the inside of the transmission cavity 13. A driven bevel gear 14 is fixed to the bottom of the stirring shaft 8. A plurality of stirring rods 9 are equidistantly arranged on the outer surface of the stirring shaft 8 near the top edge, and a spiral blade 12 is fixed on the outer surface of the stirring shaft 8 near the bottom edge. Three support rods 11 are fixed in the middle of the outer surface of the stirring shaft 8, and a scraper 10 is fixed at one end of the three support rods 11. The outer surface of one side of the three scrapers 10 is in sliding contact with the inner wall of the mixing barrel 3.

[0039] The effect achieved is that, since the driving bevel gear 15 and the driven bevel gear 14 are engaged with each other, when the driving bevel gear 15 rotates, it will drive the driven bevel gear 14 to rotate, and then drive the stirring shaft 8 to rotate. When the stirring shaft 8 rotates, it will drive the stirring rod 9, the spiral blade 12 and the scraper 10 to rotate. The stirring rod 9 and the spiral blade 12 can stir the material inside the mixing barrel 3, and the scraper 10 can scrape off the fluid material attached to the inner wall of the mixing barrel 3 to prevent adhesion.

[0040] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7As shown, the material transport component includes a reciprocating column 18, and a pneumatic component is provided inside the reciprocating column 18 near one side edge. The reciprocating column 18 is slidably connected between the inner walls of the transmission chamber 13, and the bottom of the reciprocating column 18 extends to the inner wall of the discharge sleeve 2. The rear inner wall of the transmission chamber 13 is rotatably connected with the active bevel gear 15, and the active bevel gear 15 and the driven bevel gear 14 are engaged with each other. The top of the reciprocating column 18 is concave, and a fixed rod 20 is installed inside the concave shape of the reciprocating column 18. A connecting rod 21 is fixed to the front side of the active bevel gear 15 near the outer surface edge. The outer surface of the connecting rod 21 is rotatably provided with a rocker rod 19, and the bottom end of the rocker rod 19 is rotatably connected to the fixed rod 20. The outer surface of the connecting column 1 is provided with a drive shaft 7, one end of the drive shaft 7 slides through the interior of the transmission chamber 13 and is connected to the active bevel gear 15. A storage chamber 30 is provided near the bottom of the reciprocating column 18. A conical groove 25 is provided inside the reciprocating column 18 above the storage chamber 30. A guide tube 29 is fixed to the inner bottom surface of the storage chamber 30. The top of the guide tube 29 is connected to the bottom conical surface of the conical groove 25. A spray port 32 is provided on the outer surface of the other side of the reciprocating column 18 near the bottom edge. A discharge hole 33 is provided on the inner wall of one side of the spray port 32. One end of the discharge hole 33 passes through the interior of the storage chamber 30 and is located inside the guide tube 29. The outer surface of the guide tube 29 A plurality of side openings 31 extending to the interior are provided near the bottom edge of the surface, a sealing slide 35 is slidably connected between the outer surface of the guide tube 29 and the inner wall of the storage chamber 30, a limiting ring 36 is fixed between the inner walls of the storage chamber 30 near the top edge, the sealing slide 35 is located below the limiting ring 36, a plurality of throttling holes 37 are equidistantly provided on the inner top surface of the storage chamber 30 along the circumferential direction, an annular groove 22 is provided near the bottom between the inner walls of the transmission chamber 13, a sealing ring 24 is fixed on the outer surface of the reciprocating column 18, the sealing ring 24 is slidably connected between the inner walls of the annular groove 22, the outer surface of the sealing ring 24 slides and seals with the inner wall of the annular groove 22, and the inner surface of the annular groove 22 is in a sealed and fit state. A buffer chamber 39 is provided on the bottom surface, and a support ring 38 is fixed between the inner walls of the annular groove 22 near the bottom edge. One end of each of the throttling holes 37 passes through the outer surface of the reciprocating column 18 and is located below the sealing ring 24. A plurality of second grid openings 28 that pass through the outer surface of the reciprocating column 18 are equidistantly provided on the inner wall of the conical groove 25 near the top edge. A cache chamber 17 is provided on the inner wall of the bridging column 1 outside the transmission chamber 13. A plurality of first grid openings 27 are provided on the inner wall of the cache chamber 17 near the bottom edge. The plurality of first grid openings 27 correspond to the second grid openings 28 and are interconnected. A plurality of feed holes 16 that pass through the top of the bridging column 1 are provided on the inner top surface of the cache chamber 17.

[0041] The effect achieved is that when the active bevel gear 15 rotates, it will reciprocate and pull the rocker rod 19, thereby driving the reciprocating column 18 to move up and down inside the transmission chamber 13. Since the bottom of the reciprocating column 18 extends to the open part of the injection port 32 and the inner wall of the discharge sleeve 2 in the initial state, and the sealing ring 24 is located on the bottom surface of the annular groove 22, the first grid opening 27 and the second grid opening 28 are offset relative to each other, at this time there is no fluid material in the storage chamber 30, and the sealing slide 35 is located at the bottom of the storage chamber 30. When the reciprocating column 18 slides to the top, it is in the state of absorbing material. Since the reciprocating column 18 is in a When the upward sliding starts, the injection port 32 will slide to the inner wall of the discharge sleeve 2. At this time, the injection port 32 will be sealed with the inner wall of the discharge sleeve 2. When the sealing ring 24 slides from the bottom to the top inside the annular groove 22, negative pressure will be generated at the bottom of the sealing ring 24, the annular groove 22 and the inside of the buffer chamber 39. When the sealing ring 24 slides to the top of the annular groove 22, the first grid opening 27 and the second grid opening 28 are connected to each other. At this time, under the suction force of the negative pressure, the sealing slide 35 is adsorbed from the inner bottom surface of the storage chamber 30 to the upper limit ring 36 through the throttling hole 37. During the process, the fluid material can enter the interior of the conical groove 25 from the first grid opening 27 and the second grid opening 28, and then enter the interior of the storage chamber 30 through the guide pipe 29 and the side opening 31. At this time, due to the filling of the fluid material and the upward sliding of the sealing slide 35, the interior of the annular groove 22 is at normal pressure. When the reciprocating column 18 slides to the bottom of the transmission chamber 13, it is in the discharge state. When the reciprocating column 18 starts to slide down, the first grid opening 27 and the second grid opening 28 are offset relative to each other, and the injection port 32 is sealed against the inner wall of the discharge sleeve 2. At this time, continuing to slide down will compress the interior of the annular groove 22. The air in the annular groove 22 increases the internal pressure of the annular groove 22. Excessive air pressure can be avoided by setting a buffer chamber 39 for expansion. When the reciprocating column 18 slides down to the initial state, the injection port 32 is connected with the open portion of the inner wall of the discharge sleeve 2. At this time, the compressed air in the annular groove 22 will flow into the storage chamber 30 through the throttling hole 37, and act on the sealing slide 35, pressing the sealing slide 35 downward, thereby discharging the fluid material in the storage chamber 30 from the discharge hole 33 into the injection port 32. In this reciprocating cycle, the fluid material can be intermittently conveyed.

[0042] like Figure 2 、 Figure 5 、 Figure 6 and Figure 8As shown, the pneumatic assembly includes a feeler rod 47, an adjusting chamber 46 is provided inside the reciprocating column 18, the feeler rod 47 is located inside the adjusting chamber 46, one end of the feeler rod 47 slides through the outer surface of the reciprocating column 18, an adjusting block 48 is fixed on the outer surface of the feeler rod 47, the adjusting block 48 is slidably connected between the inner walls of the adjusting chamber 46, a through hole 49 is provided at the top of the adjusting block 48 near one side edge, a spring 26 is fixed between the outer surface of one side of the adjusting block 48 and the inner wall of the adjusting chamber 46, a side hole 50 is provided at one end of the feeler rod 47 and passes through the inside of the through hole 49, an exhaust hole 34 is provided on the inner wall of one side of the discharge hole 33 near the bottom, one end of the exhaust hole 34 passes through the inside of the adjusting chamber 46, and an annular opening 41 is provided on the outer surface of the reciprocating column 18. 1 is provided with an inner flow channel 45 that penetrates into the interior of the regulating chamber 46, and the inner flow channel 45 is opposite to the exhaust hole 34. A bending hole 44 that penetrates into the interior of the regulating chamber 46 is provided near the bottom edge of the outer surface of the reciprocating column 18, and the bending hole 44 is located on one side of the exhaust hole 34. An air inlet 43 that penetrates into the interior is provided on the outer surface of the discharge sleeve 2, and the air inlet 43 is opposite to the bending hole 44. A locking ring 42 is threadedly arranged between the inner walls of the annular opening 41, and a tympanum 40 is provided between the inner walls of the annular opening 41 near the top edge, and the bottom of the tympanum 40 and the top of the locking ring 42 are fitted together. A pressing groove 23 is provided at the bottom of the bridging column 1 and the top of the discharge sleeve 2. The two pressing grooves 23 are arranged opposite to each other, and the edge of the outer surface of the tympanum 40 extends between the insides of the two pressing grooves 23.

[0043] The effect achieved is that, in the initial state of the reciprocating column 18, the bending hole 44 and the air inlet hole 43 are offset relative to each other, and under the fitting constraint of the inner wall of the discharge sleeve 2, the touch rod 47 slides toward the inside of the adjustment chamber 46, and at the same time closes the side hole 50, thereby driving the adjustment block 48 to slide toward the inside of the adjustment chamber 46. At this time, the inner flow channel 45 and the exhaust hole 34 can be connected to each other through the through hole 49. When the reciprocating column 18 slides upward, the bending hole 44 and the air inlet hole 43 are offset relative to each other, the injection port 32 is sealed against the inner wall of the discharge sleeve 2, and the middle part of the tympanic membrane 40 is sealed by the reciprocating column 1 8 is pulled upward, so that negative pressure is generated inside the closed cavity formed between the bottom of the tympanic membrane 40 and the top of the discharge sleeve 2. When the sealing ring 24 slides to the top surface of the annular groove 22, one end of the feeler rod 47 slides above the discharge sleeve 2, and the elastic force of the spring 26 pushes the adjustment block 48 together with the feeler rod 47 to the outside of the adjustment cavity 46. At this time, the side hole 50 is connected to the closed cavity formed between the bottom of the tympanic membrane 40 and the top of the discharge sleeve 2. Due to the sliding of the adjustment block 48, the inner flow channel 45 and the exhaust hole 34 are cut off, and the bending hole 4 is opened through the through hole 49. 4 is connected to the side hole 50, and at the same time, the bending hole 44 is connected to the air inlet 43, so the external air flow can be sucked into the closed cavity formed between the bottom of the eardrum 40 and the top of the discharge sleeve 2 to make its pressure normal. When the reciprocating column 18 slides downward to the initial state, the end of the feeler rod 47 will first slide between the inner wall of the discharge sleeve 2, and the side hole 50 will be closed through the inner wall of the discharge sleeve 2. At the same time, the feeler rod 47 and the adjustment block 48 will be pushed into the adjustment cavity 46, thereby cutting off the bending hole 44 and the side hole 50 from each other, and the inner flow channel 45 and the through hole 49 will be connected. The exhaust holes 34 are connected to each other. At this time, the spray port 32 is sealed from the inner wall of the discharge sleeve 2. Therefore, as the reciprocating column 18 slides downward, the middle part of the eardrum 40 will slide downward, and the air inside the closed cavity formed between the bottom of the eardrum 40 and the top of the discharge sleeve 2 will be compressed through the eardrum 40. When the reciprocating column 18 slides to the bottom, the spray port 32 is connected to the open part of the inner wall of the discharge sleeve 2. At this time, the compressed air can flow to the bottom of the discharge hole 33 through the inner flow channel 45 and the exhaust holes 34, and the fluid material flowing out of the discharge hole 33 is atomized and blown.

[0044] For example, in one embodiment, the present invention further provides a process for preparing an outdoor durable powder coating, which is applied to the above-mentioned outdoor durable powder coating preparation device, comprising the following steps:

[0045] Step S1: Powder coating and liquid solvent are injected into the interior of the mixing barrel 3 through the feed pipe 5, and then the driving shaft 7 drives the material transport component to work. When the material transport component is working, it can intermittently send the fluid stirred in the mixing barrel 3 into the interior of the discharge sleeve 2. Then, while the material transport component is working, it also drives the stirring device to stir the interior of the mixing barrel 3, and also drives the pneumatic component to atomize and spray the fluid flowing out of the material transport component, thereby breaking up the coated fine particles generated during mixing;

[0046] Step S2: When the material transporting assembly is working, when the reciprocating column 18 slides to the top, it is in the state of sucking materials. Since the spray port 32 will slide to the inner wall of the discharge sleeve 2 when the reciprocating column 18 slides up at the beginning, the spray port 32 will be sealed with the inner wall of the discharge sleeve 2 at this time, and when the sealing ring 24 slides from the bottom to the top inside the annular groove 22, negative pressure will be generated at the bottom of the sealing ring 24, the annular groove 22 and the inside of the buffer chamber 39. When the sealing ring 24 slides to the top of the annular groove 22, the first grid port 27 and the second grid port 28 are connected to each other. At this time, under the suction force of the negative pressure, the sealing slide plate 35 is adsorbed from the inner bottom surface of the storage chamber 30 to the upper limit ring 36 through the throttling hole 37. During the adsorption process, the fluid material can enter the interior of the conical groove 25 from the first grid port 27 and the second grid port 28, and then enter the interior of the storage chamber 30 through the guide pipe 29 and the side port 31;

[0047] Step S3: When the stirring device is working, since the driving bevel gear 15 and the driven bevel gear 14 are meshed with each other, when the driving bevel gear 15 rotates, the driven bevel gear 14 is driven to rotate, and then the stirring shaft 8 is driven to rotate. When the stirring shaft 8 rotates, the stirring rod 9, the spiral blade 12 and the scraper 10 are driven to rotate. The stirring rod 9 and the spiral blade 12 can stir the material inside the mixing barrel 3, and the scraper 10 can scrape off the fluid material attached to the inner wall of the mixing barrel 3 to prevent adhesion;

[0048] Step S4: When the pneumatic assembly is working, when the reciprocating column 18 slides downward to the initial state, one end of the feeler rod 47 will first slide between the inner wall of the discharge sleeve 2, closing the side hole 50 through the inner wall of the discharge sleeve 2. At the same time, the feeler rod 47 and the adjustment block 48 are pushed into the adjustment chamber 46, thereby cutting off the bending hole 44 and the side hole 50 from each other, and connecting the inner flow channel 45 and the exhaust hole 34 to each other through the through hole 49. At this time, the injection port 32 and the inner wall of the discharge sleeve 2 are sealed. Therefore, as the reciprocating column 18 slides downward, the middle part of the eardrum 40 will be driven to slide downward, and the air inside the closed cavity formed between the bottom of the eardrum 40 and the top of the discharge sleeve 2 will be compressed through the eardrum 40. When the reciprocating column 18 slides to the bottom, the spray port 32 is connected with the open part of the inner wall of the discharge sleeve 2. At this time, the compressed air can flow to the bottom of the discharge hole 33 through the internal flow channel 45 and the exhaust hole 34, and the fluid material flowing out of the discharge hole 33 is atomized and blown.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for preparing outdoor durable powder coating, characterized in that: The invention comprises a bridging column (1), a mixing barrel (3) is fixed on the top of the bridging column (1), a discharge sleeve (2) is provided at the bottom of the bridging column (1), a stirring device is provided at the top of the bridging column (1), a transmission cavity (13) extending through the bottom of the bridging column (1) is provided inside the bridging column (1), and a material transport component is provided inside the transmission cavity (13); A top cover (4) is provided between the tops of the mixing barrel (3), and a feed pipe (5) connected to the bottom is fixed to the top of the top cover (4) near both side edges, and a pressing groove (23) is provided at the bottom of the bridging column (1) and the top of the discharge sleeve (2), and a flange ring (6) is fixed to the outer surface of the bridging column (1) near the bottom edge and the outer surface of the discharge sleeve (2) near the top edge.

2. The device for preparing outdoor durable powder coating according to claim 1, characterized in that: The stirring device comprises a stirring shaft (8), wherein the stirring shaft (8) is rotatably connected to the top of the bridging column (1), the bottom of the stirring shaft (8) extends through the interior of the transmission cavity (13), a driven bevel gear (14) is fixed to the bottom of the stirring shaft (8), a plurality of stirring rods (9) are equidistantly arranged on the outer surface of the stirring shaft (8) near the top edge, a spiral blade (12) is fixed on the outer surface of the stirring shaft (8) near the bottom edge, and three support rods (11) are fixed in the middle of the outer surface of the stirring shaft (8), one end of each of the three support rods (11) is fixed with a scraper (10), and the outer surface of one side of the three scrapers (10) is correspondingly slidably fitted with the inner wall of the mixing barrel (3).

3. The device for preparing outdoor durable powder coating according to claim 1, characterized in that: The material transport component includes a reciprocating column (18), a pneumatic component is provided inside the reciprocating column (18) near one side edge, the reciprocating column (18) is slidably connected between the inner walls of the transmission chamber (13), the bottom of the reciprocating column (18) extends to the inner wall of the discharge sleeve (2), the rear inner wall of the transmission chamber (13) is rotatably connected to the driving bevel gear (15), the driving bevel gear (15) and the driven bevel gear (14) are meshed with each other, the top of the reciprocating column (18) is concave, and the A fixed rod (20) is installed in the concave interior of the reciprocating column (18), a connecting rod (21) is fixed to the front side of the active bevel gear (15) near the outer surface edge, a rocker rod (19) is rotatably provided on the outer surface of the connecting rod (21), and the bottom end of the rocker rod (19) is rotatably connected to the fixed rod (20), and a driving shaft (7) is provided on the outer surface of the bridging column (1), one end of the driving shaft (7) slides through the interior of the transmission cavity (13) and is connected to the active bevel gear (15).

4. The device for preparing outdoor durable powder coating according to claim 3, characterized in that: A storage cavity (30) is provided near the bottom of the reciprocating column (18), a conical groove (25) is provided above the storage cavity (30) in the interior of the reciprocating column (18), a material guide tube (29) is fixed to the inner bottom surface of the storage cavity (30), the top of the material guide tube (29) is connected to the bottom conical surface of the conical groove (25), a spray port (32) is provided on the outer surface of the other side of the reciprocating column (18) near the bottom edge, a discharge hole (33) is provided on the inner wall of one side of the spray port (32), one end of the discharge hole (33) passes through the interior of the storage cavity (30) and is located on the inner side of the material guide tube (29).

5. The device for preparing outdoor durable powder coating according to claim 4, characterized in that: The outer surface of the guide tube (29) is provided with a plurality of side openings (31) extending into the interior near the bottom edge, a sealing slide (35) is slidably connected between the outer surface of the guide tube (29) and the inner wall of the storage cavity (30), a limiting ring (36) is fixed between the inner walls of the storage cavity (30) near the top edge, the sealing slide (35) is located below the limiting ring (36), and a plurality of throttling holes (37) are equidistantly provided on the inner top surface of the storage cavity (30) along the circumferential direction.

6. The device for preparing outdoor durable powder coating according to claim 5, characterized in that: An annular groove (22) is provided between the inner walls of the transmission chamber (13) near the bottom, a sealing ring (24) is fixed to the outer surface of the reciprocating column (18), the sealing ring (24) is slidably connected between the inner walls of the annular groove (22), the outer surface of the sealing ring (24) is slidingly sealed against the inner wall of the annular groove (22), a mitigation cavity (39) is provided on the inner bottom surface of the annular groove (22), a support ring (38) is fixed between the inner walls of the annular groove (22) near the bottom edge, and one end of each of the plurality of throttling holes (37) passes through the outer surface of the reciprocating column (18) and is located below the sealing ring (24).

7. The device for preparing outdoor durable powder coating according to claim 6, characterized in that: The inner wall of the conical groove (25) is provided with a plurality of second grid openings (28) equidistantly near the top edge thereof and extending through the outer surface of the reciprocating column (18); the inner wall of the bridging column (1) is provided with a cache chamber (17) located outside the transmission chamber (13); the inner wall of the cache chamber (17) is provided with a plurality of first grid openings (27) near the bottom edge thereof; the plurality of first grid openings (27) are connected to each other corresponding to the second grid openings (28); the inner top surface of the cache chamber (17) is provided with a plurality of feed holes (16) extending through the top of the bridging column (1).

8. The device for preparing outdoor durable powder coating according to claim 7, characterized in that: The pneumatic assembly includes a touch rod (47), an adjustment chamber (46) is opened inside the reciprocating column (18), the touch rod (47) is located inside the adjustment chamber (46), one end of the touch rod (47) slides through the outer surface of the reciprocating column (18), an adjustment block (48) is fixed on the outer surface of the touch rod (47), the adjustment block (48) is slidably connected between the inner walls of the adjustment chamber (46), a through hole (49) is opened at the top of the adjustment block (48) near one side edge and extends to the bottom, and a spring (26) is fixed between the outer surface of one side of the adjustment block (48) and the inner wall of the adjustment chamber (46).

9. The device for preparing outdoor durable powder coating according to claim 8, characterized in that: One end of the touch rod (47) is provided with a side hole (50) that penetrates into the through hole (49), and an exhaust hole (34) is provided on the inner wall of one side of the discharge hole (33) near the bottom, and one end of the exhaust hole (34) penetrates into the inside of the adjustment chamber (46). The outer surface of the reciprocating column (18) is provided with an annular opening (41), and the bottom of the annular opening (41) is provided with an inner flow channel (45) that penetrates into the inside of the adjustment chamber (46), and the inner flow channel (45) is opposite to the exhaust hole (34). The outer surface of the reciprocating column (18) is provided with a bending hole (44) that penetrates into the inside of the adjustment chamber (46) near the bottom edge, and the bending hole (44) is located at the discharge hole. On one side of the air hole (34), the outer surface of the discharge sleeve (2) is provided with an air inlet hole (43) that penetrates to the interior, and the air inlet hole (43) is opposite to the bending hole (44). A locking ring (42) is threadedly arranged between the inner walls of the annular opening (41), and a tympanum (40) is arranged between the inner walls of the annular opening (41) near the top edge, and the bottom of the tympanum (40) and the top of the locking ring (42) are fitted together. A pressing groove (23) is provided at the bottom of the bridging column (1) and the top of the discharge sleeve (2), and the two pressing grooves (23) are arranged opposite to each other, and the edge of the outer surface of the tympanum (40) extends between the insides of the two pressing grooves (23).

10. A process for preparing outdoor durable powder coating, applied to an outdoor durable powder coating preparation device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1: Powder coating and liquid solvent are injected into the interior of the mixing barrel (3) through the feeding pipe (5), and then the driving shaft (7) drives the material transport component to work. When the material transport component is working, it can intermittently send the fluid stirred in the mixing barrel (3) into the interior of the discharge sleeve (2). Then, while the material transport component is working, it also drives the stirring device to stir the interior of the mixing barrel (3), and also drives the pneumatic component to work so that the fluid flowing out of the material transport component is atomized and sprayed, thereby breaking up the coated fine particles generated during mixing; Step S2: When the material transport component is working, when the reciprocating column (18) slides to the upper side, it is in the state of sucking materials. Since the spray port (32) will slide to the inner wall of the discharge sleeve (2) when the reciprocating column (18) slides upward at the beginning, the spray port (32) will be sealed with the inner wall of the discharge sleeve (2). When the sealing ring (24) slides upward from the bottom inside the annular groove (22), negative pressure will be generated at the bottom of the sealing ring (24), the annular groove (22) and the inside of the buffer chamber (39). ) slides to the top of the annular groove (22), the first grid opening (27) and the second grid opening (28) are connected to each other. At this time, under the suction force of the negative pressure, the sealing slide plate (35) is adsorbed from the inner bottom surface of the storage chamber (30) to the upper limit ring (36) through the throttling hole (37). During the adsorption process, the fluid material can enter the interior of the conical groove (25) from the first grid opening (27) and the second grid opening (28), and then enter the interior of the storage chamber (30) through the material guide pipe (29) and the side opening (31); Step S3: When the stirring device is working, since the driving bevel gear (15) and the driven bevel gear (14) are meshed with each other, when the driving bevel gear (15) rotates, the driven bevel gear (14) is driven to rotate, and then the stirring shaft (8) is driven to rotate. When the stirring shaft (8) rotates, the stirring rod (9), the spiral blade (12) and the scraper (10) are driven to rotate. The stirring rod (9) and the spiral blade (12) can stir the material inside the mixing barrel (3), and the scraper (10) can scrape off the fluid material attached to the inner wall of the mixing barrel (3) to prevent adhesion. Step S4: When the pneumatic assembly is working, when the reciprocating column (18) slides downward to the initial state, first, one end of the touch rod (47) will slide between the inner wall of the discharge sleeve (2), and the side hole (50) will be closed through the inner wall of the discharge sleeve (2). At the same time, the touch rod (47) together with the adjustment block (48) will be pushed into the adjustment chamber (46), thereby cutting off the bending hole (44) and the side hole (50) from each other, and connecting the inner flow channel (45) and the exhaust hole (34) to each other through the through hole (49). At this time, the space between the injection port (32) and the inner wall of the discharge sleeve (2) is The reciprocating column (18) is sealed, so as the reciprocating column (18) slides downward, the middle part of the eardrum (40) will slide downward, and the air inside the closed cavity formed between the bottom of the eardrum (40) and the top of the discharge sleeve (2) will be compressed through the eardrum (40). When the reciprocating column (18) slides to the bottom, the injection port (32) is connected with the open part of the inner wall of the discharge sleeve (2). At this time, the compressed air can flow to the bottom of the discharge hole (33) through the inner flow channel (45) and the exhaust hole (34), and the fluid material flowing out of the discharge hole (33) is atomized and blown.

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