Mixing device for hot-melt coating production

Abstract

The invention discloses a mixing device for hot-melt coating production, relates to the technical field of hot-melt coating production equipment, and solves the technical problems that an existing device has defects in the aspects of crushing efficiency, screening precision, mixing uniformity and the like, and full-process efficient continuous production is difficult to achieve. Supporting legs are fixedly connected to the four corners of the bottom of the working platform, a reinforcing frame is fixedly connected to the middle sections of the outer walls of the multiple supporting legs, a ladder assembly is fixedly connected to the front end of the left side of the working platform, a raw material crushing mechanism is installed in the working platform, and a mixing mechanism is arranged at the bottom of the raw material crushing mechanism. High-efficiency crushing is achieved through the cooperation of double crushing rollers and gear meshing and the design of a stop block, material screening and unqualified material reprocessing are completed through a screening component, molten materials are evenly mixed through a helical ribbon type structure of a mixing roller and a heating wire, and a duckbilled spray head is matched with the mixing roller to rotate to achieve automatic cleaning. The whole-process efficient continuous production from crushing, screening, mixing to cleaning is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of hot-melt coating production equipment, and particularly relates to a mixing device for hot-melt coating production. Background Art

[0002] Hot-melt coating is a kind of coating with synthetic resin as the main film-forming substance. It is applied after being heated and melted, and forms a film after cooling and solidifying. It is widely used in fields such as road markings, industrial anti-corrosion, and building waterproofing. After spraying, it can produce a firm coating on the ground, with the characteristics of smooth wire frames and strong wear resistance. When producing hot-melt coatings, it is necessary to fully mix the hot-melt coatings to ensure that various raw materials are evenly distributed in the whole.

[0003] In the production of hot-melt coatings, in order to achieve full contact and uniform mixing of different materials at high temperatures, it is necessary to first crush and then heat and melt and mix solid raw materials and additives. However, there are many technical problems in traditional production devices: the crushing mechanism mostly uses single-roll or simple double-roll crushing, and the extrusion and shearing effects on materials are limited, resulting in insufficient crushing efficiency and accuracy, and it is impossible to accurately separate materials with qualified and unqualified particle sizes. The mixing mechanism has a poor mixing effect on high-viscosity molten materials, and the materials are easily adhered to the inner wall of the equipment, and cleaning requires manual operation, with low efficiency and incompleteness. In addition, the crushing, screening, mixing and other links are mostly independent devices, and the continuity of the production process is insufficient. There is an urgent need for an integrated device with functions of crushing, screening, mixing and automatic cleaning to improve the material processing accuracy and production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a mixing device for hot-melt coating production to solve the following technical problems: Existing devices have defects in terms of crushing efficiency, screening accuracy and mixing uniformity, etc., and it is difficult to achieve high-efficiency and continuous production in the whole process.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A mixing device for hot-melt coating production, including an operation platform. Legs are fixedly connected to the four corners at the bottom of the operation platform. A reinforcing frame is fixedly connected to the middle section of the outer walls of the plurality of legs, and the top of the reinforcing frame is fixedly connected to the outer side of the bottom of the operation platform. A ladder frame is fixedly connected to the front end on the left side of the operation platform. A raw material crushing mechanism is installed inside the operation platform.

[0006] The raw material crushing mechanism includes a fixed frame, inside which a machine shell is fixedly connected. At the top of the machine shell, a top plate is fixedly connected. At the front center of the top of the top plate, two shutter doors are slidably connected. At the bottom end of the outer wall of the machine shell, an upper connection frame is fixedly connected. At the top end inside the machine shell, a surrounding hopper is fixedly connected. At the centers of the left and right sides of the inner wall of the machine shell, two crushing rollers are rotatably connected. At the centers of the front and rear ends of the inner wall of the machine shell, blocking blocks are fixedly connected. At the positions on the left side of the outer wall of the machine shell that are on the same horizontal line as the two crushing rollers, two gears are rotatably connected. On the right side of the outer wall of the machine shell, a speed reducer is provided. At the front end on the right side of the speed reducer, a driving motor I is threadedly connected through a flange. At the bottom end inside the machine shell, a screening component is provided. The fixed frame is fixedly connected inside the working platform.

[0007] As a further scheme of the present invention, the two blocking blocks are respectively arranged at the front and rear ends of the outer walls of the two crushing rollers. The inner sides of the two gears are meshed with each other, and the right sides of the two gears are fixedly connected to the left sides of the crushing rollers. The bottoms of the speed reducer and the driving motor I are fixedly connected to the top right side of the working platform, and the output shaft at the rear end on the left side of the speed reducer is fixedly connected to the right side of the rear crushing roller. The output shaft on the left side of the driving motor I is fixedly connected to the transmission shaft at the front end on the right side of the speed reducer.

[0008] As a further scheme of the present invention, a discharge port is opened at the bottom end of the back of the machine shell, two feed ports are opened at the top of the top plate, and the two shutter doors are buckled at the top of the front feed port.

[0009] As a further scheme of the present invention, the screening component includes a sieve plate. At the four corners inside the sieve plate, limiting rods are slidably connected. A return spring is sleeved on the outer walls of the plurality of limiting rods, and the bottom end of the return spring is fixedly connected to the top of the sieve plate. At the position near the front end of the bottom of the sieve plate, a shaft rod is provided. On the left and right sides of the outer wall of the shaft rod, cams are fixedly connected, and the top ends of the outer walls of the cams are attached to the left and right sides of the bottom of the sieve plate. A small transmission wheel is fixedly connected to the left side of the shaft rod. A belt is sleeved on the outer wall of the small transmission wheel. At the top end of the inner side of the belt, a large transmission wheel is sleeved. The sieve plate is slidably connected to the bottom end of the inner wall of the machine shell. The top ends of the plurality of limiting rods are respectively fixedly connected to the outer sides of the bottom ends of the two blocking blocks. The shaft rod is rotatably connected to the position near the front end of the inner bottom of the machine shell, and the left side of the shaft rod penetrates out from the left side of the outer wall of the machine shell. The right side of the large transmission wheel is fixedly connected to the left side of the front gear.

[0010] As a further scheme of the present invention, the horizontal height at the rear end of the sieve plate is lower than that at the front end. The lengths of the two limiting rods at the rear end are greater than those of the two limiting rods at the front end. Limiting flanges are processed at the bottoms of the plurality of limiting rods, and the top ends of the limiting flanges are attached to the four corners of the bottom of the sieve plate.

[0011] As a further solution of the present invention, the screening member further includes a vertical pipe. At the front end of the bottom of the outer wall of the vertical pipe, a collecting hopper is fixedly connected. At the front end of the top of the outer wall of the vertical pipe, a discharging hopper is fixedly connected. The top of the vertical pipe is threadedly connected with a driving motor II through a flange. A spiral lifting rod is rotatably connected inside the vertical pipe. The vertical pipe is respectively communicated with the collecting hopper and the discharging hopper. The front end of the collecting hopper is threadedly connected to the bottom end of the back of the machine shell through a flange, and the front end of the collecting hopper is communicated with the discharge port opened at the bottom end of the back of the machine shell. The bottom of the discharging hopper is communicated with the feeding port opened at the back end of the top of the top plate. The outer wall of the spiral lifting rod fits together with the inner wall of the vertical pipe.

[0012] As a further solution of the present invention, a mixing mechanism is arranged at the bottom of the raw material crushing mechanism. The mixing mechanism includes a mixing tank. At the top of the outer wall of the mixing tank, a lower connecting frame is fixedly connected. At the bottom end of the inside of the mixing tank, a mixing roller is rotatably connected. The right side of the mixing tank is threadedly connected with a driving motor III through a flange. At the top of the front surface and the back of the mixing tank, water connecting pipes are threadedly connected through flanges. At the top of the front end and the back end of the inner wall of the mixing tank, a plurality of spray heads are threadedly connected through flanges. At the left and right sides of the bottom end of the mixing tank, discharge ports are opened. The lower connecting frame is bolted to the bottom of the upper connecting frame. The left side of the water connecting pipe is communicated with an external water source. A plurality of the spray heads are all communicated with the water connecting pipe.

[0013] As a further solution of the present invention, the mixing roller is composed of a roller shaft, multiple groups of fixing rods and spiral ribbon mixing blades. The roller shaft is rotatably connected at the center of the inside of the mixing tank, and the left side of the roller shaft penetrates out from the left side of the mixing tank. A wire routing groove is preset inside the left side of the roller shaft. Inside each fixing rod, a heating wire is wound, and the fixing rod is communicated with the wire routing groove opened inside the roller shaft. The heating wire extends out from the left side of the roller shaft through a connecting wire and is connected to an external power supply. The end of each spiral ribbon mixing blade is processed into a wedge shape, and the outer wall of the spiral ribbon mixing blade can fit with the bottom end of the inner wall of the mixing tank.

[0014] As a further solution of the present invention, the nozzle of each spray head is processed into a duckbill shape and is inclined at the position facing the mixing roller. An electric control valve is processed inside each discharge port, which can control the opening and closing of the two discharge ports.

[0015] The beneficial effects of the present invention are as follows: (1) The two crushing rollers rotate synchronously and reversely through gear meshing to extrude and shear the materials for crushing. The solid raw materials can be processed into fine particles, laying a foundation for subsequent high-temperature mixing. Moreover, the blocking blocks on the inner wall of the machine shell can effectively intercept large pieces of materials and prevent them from directly sliding down from the gap between the crushing rollers and the machine shell, ensuring that the materials are fully stressed in the crushing area and improving the crushing qualification rate of the materials; (2) The screen plate adopts an inclined design with a low back end and a high front end. Combined with the vertical reciprocating motion driven by the cam, it can accurately screen the crushed materials. The qualified particles fall directly into the mixing mechanism, and the unqualified materials enter the vertical pipe through the discharge port and the collection bucket, and are sent back to the crushing link through the spiral lifting rod, forming a closed loop of "crushing-screening-re-crushing", reducing the waste of raw materials. The combined design of the limit rod and the reset spring ensures the stability of the screen plate movement trajectory, so that the screening efficiency is not affected. (3) The mixing roller adopts a spiral ribbon mixing blade structure, which is designed for high-viscosity materials. It can generate strong axial and radial flows when rotating, so that the molten material can be evenly mixed in three dimensions in the mixing tank, improving the mixing uniformity. The heating wire in the fixed rod can heat the material to a molten state and reduce the viscosity. At the same time, the wedge-shaped end of the spiral ribbon mixing blade fits the inner wall of the mixing tank and can scrape off the adhering material during the rotation process. (4) Efficient crushing is achieved through the design of double crushing rollers with gear meshing and blocking blocks. The screening component completes material screening and reprocessing of unqualified materials. The spiral ribbon structure and heating wire of the mixing roller enable the molten material to be evenly mixed. The duckbill nozzle cooperates with the rotation of the mixing roller to achieve automatic cleaning, realizing efficient and continuous production of the entire process from crushing, screening, mixing to cleaning, significantly improving the material processing accuracy and equipment operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the connection structure of a mixing device for hot-melt coating production according to the present invention; Figure 2 This invention Figure 1 Another isometric schematic diagram of the connection structure; Figure 3 This invention Figure 2 Schematic diagram of the upward-looking connection structure; Figure 4 This invention Figure 1 Schematic diagram of the connection structure of the raw material crushing mechanism and the mixing mechanism; Figure 5 This invention Figure 4 Another isometric schematic diagram of the connection structure; Figure 6 This invention Figure 4 The schematic diagram of the connection structure after the partial screening components are hidden in the middle; Figure 7 This invention Figure 6 A schematic diagram of a partial cross-sectional connection structure; Figure 8 This invention Figure 5 A schematic diagram of a partial cross-sectional connection structure; Figure 9 This invention Figure 4Schematic diagram of the partial sectional connection structure of the middle screening member; Figure 10 This is the present invention Figure 7 Schematic diagram of the connection structure of the middle screening member; Figure 11 This is the present invention Figure 10 Schematic diagram of the connection structure in another axonometric view; Figure 12 This is the present invention Figure 4 Schematic diagram of the connection structure of the mixing mechanism in the present invention.

[0017] In the figure: 1, operation platform; 2, support leg; 3, reinforcement frame; 4, ladder frame; 5, raw material crushing mechanism; 501, fixed frame; 502, casing; 503, top plate; 504, blocking door; 505, upper connection frame; 506, enclosing hopper; 507, crushing roller; 508, blocking block; 509, gear; 510, reduction box; 511, drive motor I; 512, screening member; 5121, sieve plate; 5122, limiting rod; 5123, return spring; 5124, shaft rod; 5125, cam; 5126, small drive pulley; 5127, belt; 5128, large drive pulley; 5129, vertical pipe; 51210, collecting hopper; 51211, discharge hopper; 51212, drive motor II; 51213, spiral lifting rod; 6, mixing mechanism; 601, mixing tank; 602, lower connection frame; 603, mixing roller; 604, drive motor III; 605, water connection pipe; 606, spray head; 607, discharge port. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Please refer to Figures 1-11As shown in the figure, the present invention is a mixing device for the production of hot-melt coatings, including an operation platform 1. The operation platform 1 is used for fixedly installing a raw material crushing mechanism 5 and a mixing mechanism 6. Legs 2 are fixedly connected to the four corners of the bottom of the operation platform 1. The legs 2 are used to support the operation platform 1. A reinforcing frame 3 is fixedly connected to the middle section of the outer wall of multiple legs 2. The reinforcing frame 3 is used to assist the legs 2 in supporting the operation platform 1, thereby enhancing the support strength and stability of the operation platform 1. Moreover, the top of the reinforcing frame 3 is fixedly connected to the outer side of the bottom of the operation platform 1. A ladder 4 is fixedly connected to the front end on the left side of the operation platform 1. Through the ladder 4, one can climb to the top of the operation platform 1. A raw material crushing mechanism 5 is installed inside the operation platform 1. The raw material crushing mechanism 5 is used to crush the raw materials of the hot-melt coatings to be processed and other additive raw materials to be added to the coatings, so as to facilitate the subsequent mixing process of the hot-melt coatings.

[0020] The raw material crushing mechanism 5 includes a fixed frame 501 which is used for fixedly installing the machine housing 502. The inner side of the fixed frame 501 is fixedly connected with the machine housing 502. The machine housing 502 is used for enclosing the raw materials for producing the hot-melt type coating and other additive raw materials to be added to the coating, and can support or fix the enclosing hopper 506, the crushing rollers 507, the blocking blocks 508 and the screening component 512. The top end of the machine housing 502 is fixedly connected with a top plate 503 which is used for enclosing the top of the machine housing 502. At the front end of the center of the top of the top plate 503, two shutter doors 504 are slidably connected. The shutter doors 504 are used for covering the feeding port opened at the front end of the top of the top plate 503. The outer wall bottom end of the machine housing 502 is fixedly connected with an upper connecting frame 505 which is used for connecting and fixing the lower connecting frame 602 in the mixing mechanism 6. The inner top end of the machine housing 502 is fixedly connected with an enclosing hopper 506 which is used for enclosing the raw materials for producing the hot-melt type coating and the additive raw materials to be added to the coating, so that the raw materials can fall to the center of the two crushing rollers 507. At the center of the left and right sides of the inner wall of the machine housing 502, two crushing rollers 507 are rotatably connected. The crushing rollers 507 are used for crushing the raw materials for producing the hot-melt type coating and the additive raw materials to be added to the coating, so that different materials can be fully contacted at high temperature during subsequent mixing processing to achieve uniform mixing. At the center of the front end and the rear end of the inner wall of the machine housing 502, blocking blocks 508 are fixedly connected. The blocking blocks 508 are used for enclosing the materials, so that the raw materials for producing the hot-melt type coating and the additive raw materials to be added to the coating can be fully crushed, and to prevent large pieces of materials from directly sliding out through the gap between the crushing rollers 507 and the machine housing 502, resulting in an unsatisfactory crushing effect on the materials. On the left side of the outer wall of the machine housing 502, at a position on the same horizontal line as the two crushing rollers 507, two gears 509 are rotatably connected. The two gears 509 mesh with each other. Through the mutual transmission of the two gears 509, when one of the crushing rollers 507 rotates, it can drive the other crushing roller 507 to rotate synchronously, so as to crush the materials. On the right side of the outer wall of the machine housing 502, a speed reducer 510 is provided. The speed reducer 510 is used for driving the rear crushing roller 507 to rotate. The front end on the right side of the speed reducer 510 is threadedly connected with a driving motor 1 511 through a flange. The driving motor 1 511 is used for providing power to the speed reducer 510. At the inner bottom end of the machine housing 502, a screening component 512 is provided. The screening component 512 is used for screening the crushed materials, so that the materials with qualified particle size specifications are screened out and put into the mixing mechanism 6 for mixing, so as to improve the mixing production efficiency of the hot-melt type coating, and the materials with unqualified particle size specifications are re-transported to the enclosing hopper 506, so that the unqualified materials can be crushed again. The fixed frame 501 is fixedly connected inside the working platform 1.

[0021] In this embodiment, preferably, the two blocking blocks 508 are respectively arranged at the front end and the rear end of the outer walls of the two crushing rollers 507. The inner sides of the two gears 509 are meshed with each other, and the right sides of the two gears 509 are fixedly connected to the left sides of the crushing rollers 507. The bottoms of the speed reducer 510 and the first driving motor 511 are fixedly connected to the top right side of the operation platform 1, and the output shaft at the rear end of the left side of the speed reducer 510 is fixedly connected to the right side of the crushing roller 507 at the rear end. The output shaft on the left side of the first driving motor 511 is fixedly connected to the transmission shaft at the front end of the right side of the speed reducer 510.

[0022] In this embodiment, preferably, a discharge port is formed at the bottom end of the back of the casing 502. The discharge port is used to discharge the materials with unqualified particle size specifications screened out by the screening member 512 from the inside of the casing 502. Two feeding ports are formed at the top of the top plate 503. Both feeding ports are used to put materials into the inside of the casing 502. The two shutter doors 504 are buckled at the top ends of the front feeding ports.

[0023] In this embodiment, preferably, the screening member 512 includes a sieve plate 5121 which is used to screen the crushed materials. The inner four corners of the sieve plate 5121 are all slidably connected with limiting rods 5122 which are used to limit the movement track of the sieve plate 5121 so that the sieve plate 5121 makes a vertical reciprocating movement. A return spring 5123 is sleeved on the outer walls of the plurality of limiting rods 5122 which is used to reset the sieve plate 5121, and the bottom end of the return spring 5123 is fixedly connected to the top end of the sieve plate 5121. A shaft rod 5124 is arranged at a position near the front end of the bottom of the sieve plate 5121 which is used to support the cam 5125 and can drive the cam 5125 to rotate. Cams 5125 are fixedly connected to the left and right sides of the outer wall of the shaft rod 5124, and the top ends of the outer walls of the cams 5125 are attached to the left and right sides of the bottom of the sieve plate 5121. During the continuous rotation of the shaft rod 5124, the cam 5125 can be continuously driven to rotate, so as to drive the sieve plate 5121 to make a reciprocating movement through the cam 5125. A small transmission wheel 5126 is fixedly connected to the left side of the shaft rod 5124 which is used to drive the shaft rod 5124 to rotate. A belt 5127 is sleeved on the outer wall of the small transmission wheel 5126 which is used to drive the small transmission wheel 5126 to rotate. A large transmission wheel 5128 is sleeved on the inner top end of the belt 5127 which is used to drive the belt 5127 to rotate. The sieve plate 5121 is slidably connected to the bottom end of the inner wall of the casing 502. The top ends of the plurality of limiting rods 5122 are respectively fixedly connected to the outer sides of the bottom ends of the two blocking blocks 508. The shaft rod 5124 is rotatably connected to a position near the front end of the inner bottom of the casing 502, and the left side of the shaft rod 5124 penetrates out of the left side of the outer wall of the casing 502. The right side of the large transmission wheel 5128 is fixedly connected to the left side of the front gear 509.

[0024] In this embodiment, preferably, the horizontal height of the rear end of the sieve plate 5121 is lower than that of the front end, which facilitates the screening of the crushed materials by the sieve plate 5121 and conveniently discharges the materials with unqualified particle sizes from the discharge port. The lengths of the two limiting rods 5122 at the rear end are greater than those of the two limiting rods 5122 at the front end, and limiting flanges are processed at the bottoms of the multiple limiting rods 5122, and the tops of the limiting flanges are attached to the four corners of the bottom of the sieve plate 5121. The limiting flanges are used to limit the movement stroke of the sieve plate 5121.

[0025] In this embodiment, preferably, the screening member 512 further includes a vertical pipe 5129. The vertical pipe 5129 is used to enclose the materials lifted and conveyed by the spiral lifting rod 51213. A collection hopper 51210 is fixedly connected to the front end of the bottom of the outer wall of the vertical pipe 5129. The collection hopper 51210 is used to collect the unqualified materials discharged from the discharge port and transport the collected materials into the vertical pipe 5129. A discharge hopper 51211 is fixedly connected to the front end of the top of the outer wall of the vertical pipe 5129. The discharge hopper 51211 is used to re-discharge the materials lifted and conveyed by the spiral lifting rod 51213 into the interior of the casing 502, so as to facilitate the re-crushing process of the materials. A second drive motor 51212 is threadedly connected to the top of the vertical pipe 5129 through a flange. The second drive motor 51212 is used to drive the spiral lifting rod 51213 to rotate. A spiral lifting rod 51213 is rotatably connected to the interior of the vertical pipe 5129. The spiral lifting rod 51213 is used to lift and transport the materials discharged into the interior of the vertical pipe 5129. The vertical pipe 5129 is respectively communicated with the collection hopper 51210 and the discharge hopper 51211. The front end of the collection hopper 51210 is threadedly connected to the bottom end of the back of the casing 502 through a flange, and the front end of the collection hopper 51210 is communicated with the discharge port opened at the bottom end of the back of the casing 502. The bottom of the discharge hopper 51211 is communicated with the feed port opened at the rear end of the top of the top plate 503. The outer wall of the spiral lifting rod 51213 is in contact with the inner wall of the vertical pipe 5129.

[0026] In summary, during the production of hot-melt coatings, solid materials such as resins and fillers need to be heated and melted first, and then mixed with other components. In order to make different materials come into contact with each other at high temperatures and achieve uniform mixing, the materials need to be crushed first. At this time, the raw materials of the hot-melt coating and the additive raw materials to be added to the coating are put into the inside of the casing 502. The put-in materials fall into the retaining hopper 506 inside the casing 502. The retaining hopper 506 can guide the materials to the center of the two crushing rollers 507 to prepare for subsequent crushing. At the same time, the first driving motor 511 is started, and the rear crushing roller 507 is driven to rotate through the speed reducer 510. The rear crushing roller 507 drives the front crushing roller 507 to rotate synchronously through the two meshing gears 509. The two crushing rollers 507 rotate relatively, squeezing and shearing the raw materials entering the center, so that the raw materials are crushed into smaller particles, so that they can come into full contact at high temperatures during subsequent mixing. The blocking blocks 508 at the front and rear ends of the inner wall of the casing 502 can play a role in retaining the materials, preventing large pieces of materials from sliding out directly from the gap between the crushing rollers 507 and the casing 502, ensuring that the materials are fully crushed between the crushing rollers 507, and improving the crushing effect. The crushed materials fall onto the sieve plate 5121. The shaft rod 5124 rotates under the drive of the large driving wheel 5128, the belt 5127 and the small driving wheel 5126. The cam 5125 on the shaft rod 5124 rotates accordingly, pushing the sieve plate 5121 to make a vertical reciprocating motion along the limiting rod 5122. The limiting rod 5122 defines the movement trajectory, and the return spring 5123 assists in returning. The horizontal height of the rear end of the sieve plate 5121 is lower than that of the front end. When the materials move on the sieve plate 5121, the materials with qualified particle size specifications fall through the sieve holes and enter the mixing mechanism 6, while the materials with unqualified particle size specifications slide down from the rear end of the sieve plate 5121, are discharged from the discharge port at the bottom of the back of the casing 502, fall into the collection hopper 51210, and then enter the vertical pipe 5129. The spiral lifting rod 51213 in the vertical pipe 5129 rotates under the drive of the second driving motor 51212, lifts the materials and discharges them again through the discharge hopper 51211 to the feed port at the rear end of the top plate 503, and returns to the retaining hopper 506 for crushing again, forming a cycle until the particle size of the materials meets the standard, and the materials with unqualified particle size specifications can be recycled.

[0027] Example 2, please refer to Figures 1-5 and Figure 12As shown in the figure, on the basis of the first embodiment, a mixing mechanism 6 is provided at the bottom of the raw material crushing mechanism 5. The mixing mechanism 6 is used for mixing and processing the crushed raw materials of the hot-melt coating and the additive raw materials to be added to the coating. The mixing mechanism 6 includes a mixing tank 601. The mixing tank 601 is used for holding the crushed materials. A lower connecting frame 602 is fixedly connected to the top end of the outer wall of the mixing tank 601. The lower connecting frame 602 is used for fixedly installing the mixing tank 601. A mixing roller 603 is rotatably connected to the bottom end inside the mixing tank 601. The mixing roller 603 is used for mixing and stirring the materials put into the mixing tank 601, and can heat the materials put into the mixing tank 601 while mixing the materials, so that the temperature of the materials rises to the molten state, which can reduce the viscosity of the materials and enable various raw materials to be fully mixed in the molten state. A third driving motor 604 is threadedly connected to the right side of the mixing tank 601 through a flange. The third driving motor 604 is used to provide power to the mixing roller 603 so that the mixing roller 603 can rotate inside the mixing tank 601. Water connection pipes 605 are threadedly connected to the top ends of the front surface and the back of the mixing tank 601 through flanges. The water connection pipes 605 are used to provide mixed water to the spray nozzles 606. A plurality of spray nozzles 606 are threadedly connected to the top of the front end and the back end of the inner wall of the mixing tank 601 through flanges. The spray nozzles 606 are used to spray the mixed water inside the water connection pipes 605 into the mixing tank 601. Discharge ports 607 are formed on both the left and right sides of the bottom end of the mixing tank 601. The discharge ports 607 are used to discharge the hot-melt coating after the mixing process is completed. The lower connecting frame 602 is bolted to the bottom of the upper connecting frame 505. The left side of the water connection pipe 605 is connected to an external water source. A plurality of spray nozzles 606 are all connected to the water connection pipe 605.

[0028] In this embodiment, preferably, the mixing roller 603 is composed of a roller shaft, multiple groups of fixing rods and spiral ribbon mixing blades. The roller shaft is rotatably connected to the inner center of the mixing tank 601. The roller shaft is used to fix the fixing rods and the spiral ribbon mixing blades. The fixing rods are used to fixedly support the spiral ribbon mixing blades. The spiral ribbon mixing blades are used to mix and stir the molten material, which is suitable for mixing high-viscosity materials, can generate strong axial and radial flows, thereby improving the mixing uniformity of the material, and can drive it to rotate. The left side of the roller shaft penetrates out from the left side of the mixing tank 601. A wire groove is preset inside the left side of the roller shaft. A heating wire is wound inside each fixing rod. The heating wire is used to heat the material, and the fixing rod is communicated with the wire groove opened inside the roller shaft. The heating wire extends out from the left side of the roller shaft through a connecting wire and is connected to an external power supply. The end of each spiral ribbon mixing blade is processed into a wedge shape, and the outer wall of the spiral ribbon mixing blade can be mutually attached to the bottom end of the inner wall of the mixing tank 601. During the rotation of the spiral ribbon mixing blade inside the mixing tank 601, the end of the spiral ribbon mixing blade processed into a wedge shape can scrape the inner wall of the mixing tank 601, and can scrape off the molten material adhering to the inner wall of the mixing tank 601.

[0029] In this embodiment, preferably, the nozzle of each spray head 606 is processed into a duckbill shape and is inclined at the position facing the mixing roller 603. By processing the nozzle of the spray head 606 into a duckbill shape, the water sprayed by the spray head 606 can form a water curtain. And because the nozzle is inclined at the position facing the mixing roller 603, the sprayed water curtain will be sprayed onto the outer wall of the mixing roller 603, so as to facilitate the subsequent cleaning of the mixing tank 601 and the mixing roller 603 after the mixing process of the material is completed. An electric control valve is processed inside each discharge port 607, which can control the opening and closing of the two discharge ports 607.

[0030] In summary, after the raw materials of the hot-melt coating after crushing and the additive raw materials to be added to the coating are put into the mixing tank 601 inside the mixing mechanism 6, the drive motor three 604 starts to work. The drive motor three 604 can provide power for the mixing roller 603, enabling the mixing roller 603 to rotate inside the mixing tank 601. While the mixing roller 603 is working, the heating wire in the fixed rod is electrified to heat the material, raising the temperature of the material to the molten state, reducing the viscosity, and promoting the full mixing of various raw materials in the molten state. And the water supply pipe 605 will synchronously transport the mixing water to the nozzle 606, so as to spray water into the mixing tank 601 through the nozzle 606. After the mixing process of the hot-melt coating is completed, the discharge port 607 is opened by the electric control valve, and the mixed hot-melt coating can be discharged from the inside of the mixing tank 601. And through the mutual cooperation of the water supply pipe 605, the nozzle 606 and the mixing roller 603, the sprayed water curtain will be sprayed on the outer wall of the mixing roller 603. Through the rotation of the mixing roller 603, the mixing tank 601 and the mixing roller 603 can be cleaned after the mixing process is completed.

[0031] Embodiment 3. Please refer to Figures 1-12 As shown in the figure, by combining Embodiment 1 and Embodiment 2, this embodiment is obtained. When the mixing device for producing the hot-melt coating works, first, the solid raw materials and additives are put into the machine shell 502 from the feed inlet of the top plate 503, and are guided to the center of the two crushing rollers 507 through the baffle hopper 506. The drive motor one 511 drives the rear crushing roller 507 to rotate through the speed reducer 510, and then the front crushing roller 507 rotates synchronously and reversely through the meshing gear 509 to extrude and shear the material for crushing. The blocking blocks 508 on the inner wall of the machine shell 502 prevent large pieces of material from slipping out through the gaps to ensure sufficient crushing. The crushed material falls onto the sieve plate 5121. The shaft rod 5124 drives the cam 5125 through the large transmission wheel 5128, the belt 5127 and the small transmission wheel 5126 to make the sieve plate 5121 move vertically and reciprocally along the limiting rod 5122 for screening. The rear end of the sieve plate 5121 is low and the front end is high. The qualified material falls into the mixing mechanism 6, and the unqualified material enters the vertical pipe 5129 through the discharge port and the collecting hopper 51210, and is lifted by the spiral lifting rod 51213 driven by the drive motor two 51212 and then returns to the feed inlet at the top of the machine shell 502 through the discharge hopper 51211 for cyclic crushing; after the crushed qualified material falls into the mixing tank 601, the drive motor three 604 drives the mixing roller 603 composed of a roller shaft, a fixed rod and a spiral ribbon mixing blade to rotate. The heating wire in the fixed rod is electrified to heat the material to the molten state, and the spiral ribbon mixing blade generates axial and radial flows during rotation to achieve uniform mixing. Its wedge-shaped end scrapes the inner wall of the mixing tank 601 to prevent the material from adhering. Finally, the mixed hot-melt coating is discharged by opening the discharge port 607 through the electric control valve. During the whole process, the raw material crushing mechanism 5 and the mixing mechanism 6 are fixed through the upper and lower connecting frames 602 to achieve seamless material transmission, ensuring continuous and efficient production.

[0032] The above has described in detail one embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the application of the present invention.

Claims

1. A mixing device for the production of hot-melt coatings, comprising an operating platform. Legs are fixedly connected to the four corners of the bottom of the operating platform. A reinforcing frame is fixedly connected to the middle section of the outer wall of multiple legs, and the top of the reinforcing frame is fixedly connected to the outer side of the bottom of the operating platform. A ladder frame is fixedly connected to the front end of the left side of the operating platform, and its characteristics are that, A raw material crushing mechanism is installed inside the operation platform; The raw material crushing mechanism includes a fixed frame. Inside the fixed frame, a machine shell is fixedly connected. At the top of the machine shell, a top plate is fixedly connected. At the front center of the top of the top plate, two shutter doors are slidably connected. At the bottom end of the outer wall of the machine shell, an upper connecting frame is fixedly connected. At the top end inside the machine shell, a surrounding hopper is fixedly connected. At the center of the left and right sides of the inner wall of the machine shell, two crushing rollers are rotatably connected. At the center of the front and rear ends of the inner wall of the machine shell, blocking blocks are fixedly connected. At the position on the left side of the outer wall of the machine shell that is on the same horizontal line as the two crushing rollers, two gears are rotatably connected. On the right side of the outer wall of the machine shell, a speed reducer is provided. At the front end of the right side of the speed reducer, a driving motor I is threadedly connected through a flange. At the bottom end inside the machine shell, a screening component is provided. The fixed frame is fixedly connected inside the operation platform.

2. The mixing device for producing hot-melt coating according to claim 1, wherein, The two blocking blocks are respectively arranged at the front and rear ends of the outer walls of the two crushing rollers. The inner sides of the two gears are meshed with each other, and the right sides of the two gears are fixedly connected to the left sides of the crushing rollers. The bottom of the speed reducer and the driving motor I are fixedly connected to the right side of the top end of the operation platform, and the output shaft at the rear end of the left side of the speed reducer is fixedly connected to the right side of the crushing roller at the rear end. The output shaft on the left side of the driving motor I is fixedly connected to the transmission shaft at the front end of the right side of the speed reducer.

3. A mixing device for the production of a hot-melt coating according to claim 1, characterized in that, At the bottom end of the back of the machine shell, a discharge port is opened. At the top of the top plate, two feed ports are opened. The two shutter doors are buckled at the top of the front feed port.

4. A mixing device for the production of a hot-melt coating according to claim 1, characterized in that, The screening component includes a sieve plate. At the four corners inside the sieve plate, limiting rods are slidably connected. A return spring is sleeved on the outer walls of the plurality of limiting rods, and the bottom end of the return spring is fixedly connected to the top of the sieve plate. At the position near the front end of the bottom of the sieve plate, a shaft rod is provided. On the left and right sides of the outer wall of the shaft rod, cams are fixedly connected, and the top ends of the outer walls of the cams are attached to the left and right sides of the bottom of the sieve plate. On the left side of the shaft rod, a small transmission wheel is fixedly connected. A belt is sleeved on the outer wall of the small transmission wheel. At the top end of the inner side of the belt, a large transmission wheel is sleeved. The sieve plate is slidably connected to the bottom end of the inner wall of the machine shell. The top ends of the plurality of limiting rods are respectively fixedly connected to the outer sides of the bottom ends of the two blocking blocks. The shaft rod is rotatably connected to the position near the front end of the inner bottom of the machine shell, and the left side of the shaft rod penetrates out from the left side of the outer wall of the machine shell. The right side of the large transmission wheel is fixedly connected to the left side of the front gear.

5. A mixing device for the production of a hot-melt coating according to claim 4, characterized in that, The horizontal height of the rear end of the sieve plate is lower than that of the front end. The lengths of the two limiting rods at the rear end are greater than those of the two limiting rods at the front end. Limiting tabs are processed at the bottoms of the plurality of limiting rods, and the top ends of the limiting tabs are attached to the four corners of the bottom of the sieve plate.

6. The mixing device for producing hot-melt coatings according to claim 4, wherein, The screening member further includes a vertical pipe. A collection hopper is fixedly connected to the front end of the bottom of the outer wall of the vertical pipe. A discharge hopper is fixedly connected to the front end of the top of the outer wall of the vertical pipe. A drive motor II is threadedly connected to the top of the vertical pipe through a flange. A spiral lifting rod is rotatably connected inside the vertical pipe. The vertical pipe is respectively communicated with the collection hopper and the discharge hopper. The front end of the collection hopper is threadedly connected to the bottom end of the back of the machine shell through a flange, and the front end of the collection hopper is communicated with the discharge port opened at the bottom end of the back of the machine shell. The bottom of the discharge hopper is communicated with the feed port opened at the rear end of the top of the top plate. The outer wall of the spiral lifting rod is in fit with the inner wall of the vertical pipe.

7. A mixing device for the production of a hot-melt coating according to claim 1, characterized in that, A mixing mechanism is arranged at the bottom of the raw material crushing mechanism. The mixing mechanism includes a mixing tank. A lower connecting frame is fixedly connected to the top of the outer wall of the mixing tank. A mixing roller is rotatably connected to the bottom end inside the mixing tank. A drive motor III is threadedly connected to the right side of the mixing tank through a flange. Water connection pipes are threadedly connected to the top of the front surface and the back of the mixing tank through flanges. A plurality of spray heads are threadedly connected to the top of the front end and the back end of the inner wall of the mixing tank through flanges. Discharge ports are respectively opened at the left and right sides of the bottom end of the mixing tank. The lower connecting frame is bolted to the bottom of the upper connecting frame. The left side of the water connection pipe is communicated with an external water source. A plurality of the spray heads are all communicated with the water connection pipe.

8. A mixing device for the production of a hot-melt coating according to claim 7, characterized in that, The mixing roller is composed of a roller shaft, multiple groups of fixed rods and spiral ribbon-shaped mixing blades. The roller shaft is rotatably connected to the center inside the mixing tank, and the left side of the roller shaft penetrates out from the left side of the mixing tank. A wire groove is preset inside the left side of the roller shaft. A heating wire is coiled inside each fixed rod, and the fixed rod is communicated with the wire groove opened inside the roller shaft. The heating wire extends out from the left side of the roller shaft through a connecting wire and is connected to an external power source. The end of each spiral ribbon-shaped mixing blade is processed into a wedge shape, and the outer wall of the spiral ribbon-shaped mixing blade can be in mutual fit with the bottom end of the inner wall of the mixing tank.

9. A mixing device for the production of a hot-melt coating according to claim 7, characterized in that, The nozzle of each spray head is processed into a duckbill shape and is inclined at the position facing the mixing roller. An electric control valve is processed inside each discharge port, which can control the opening and closing of the two discharge ports.

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