Melting equipment for engineering plastic production

Abstract

The invention relates to the technical field of plastic processing, and discloses melting equipment for engineering plastic production, which comprises a processing box, a crushing cabin and a mixing cabin are arranged in the processing box, a crushing mechanism is assembled in the crushing cabin, and a distribution type blending system is arranged in the mixing cabin; according to the distribution type blending system, a cylinder telescopic shaft is linked with a connecting rod, a hollow guide rod and a rotary driving part to move horizontally, and crushed material path switching and alternate melting are achieved; taking material injection of a right-side melting and mixing vertical reactor as an example, a hollow guide rod moves rightwards to drive a first gear to rotate anticlockwise, a transmission guide chassis rotates clockwise, and crushed materials are guided to be directionally injected into the melting and mixing vertical reactor; after the second bevel gear is meshed with the first bevel gear on the right side, the first bevel gear can be driven to spin, and stirring and melting are conducted through a material mixing part; the system can be reversely reset and switched to the left melting and mixing vertical reactor to inject materials, meanwhile, right melting materials are discharged, alternate continuous treatment is achieved, and the efficiency bottleneck problem of a single heating box is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic processing, more particularly to a melting equipment for engineering plastic production. BACKGROUND

[0002] Engineering plastics refers to industrial plastics used as industrial parts or shell materials, which have the characteristics of high strength, good impact resistance, strong heat resistance, high hardness and excellent anti-aging performance, and belong to sustainable development resources. When recycling engineering plastics, a melting blending equipment is often used for modification treatment to improve the performance of the regenerated materials.

[0003] Melting is one of the key processing links, and its effect directly affects the performance of the final product. Traditional plastic melting equipment usually adopts a single heating box structure (such as CN118107083B), and the crushed plastic pieces are centrally fed and heated for melting. However, this structure has obvious limitations. First, due to the fixed capacity of the heating box, the single processing capacity is limited, which cannot meet the needs of large-scale continuous production. Second, after the melting of a batch of materials is completed, the equipment needs to be stopped for discharging and cleaning before processing the next batch of materials, which causes the interruption of production operation and low efficiency. In addition, the single heating cavity also has optimization space in terms of stirring and heat conduction uniformity, which may affect the homogenization degree of the melted plastic. In order to overcome the above problems, the existing technology has adopted the concept of double-cavity or multi-cavity alternating work melting equipment to realize continuous production. However, in actual application, how to realize the precise and orderly distribution and transportation of materials between multiple cavities, while ensuring the coordinated linkage of various actuators (such as material guiding, flow cutting, driving, etc.) and avoiding mechanism interference or material blockage, becomes a design difficulty. Especially in the limited space of the equipment box, integrating crushing, temporary storage, distribution, melting and other multifunctional modules and making them work efficiently and reliably together puts high requirements on the layout of mechanical structure and control system. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present application is how to overcome the problems of limited processing capacity, discontinuous operation and low overall production efficiency caused by the single heating box of the existing melting equipment.

[0005] The present application provides the following technical solution: a melting equipment for engineering plastic production, comprising a processing box, the inside of the processing box is provided with two cabins from top to bottom, which are a crushing cabin and a mixing cabin, the crushing cabin is equipped with a crushing mechanism, and the mixing cabin is provided with a distribution type blending system. The distribution type blending system comprises a material guiding part rotatably arranged below the crushing mechanism, below the material guiding part are arranged two symmetrical molten material vertical reactors fixed on the bottom wall of the mixing cabin, the front side of the mixing cabin is movably arranged with an axial driving part, both sides of the axial driving part are equipped with rotary driving parts for alternately triggering the transmission task of the two molten material vertical reactors, the top of the axial driving part is further arranged with a reversing adjusting part on the front side of the mixing cabin, when the axial driving part moves linearly, the torque is transmitted through the reversing adjusting part, so as to drive the material guiding part to deflect at the same side, so as to guide the crushed material to be discharged into the molten material vertical reactor on the left side or the right side to trigger the molten material blending.

[0006] Further, the material guiding part comprises a guiding bottom plate arranged in the mixing cabin, both ends of the guiding bottom plate are fixed with flexible partitions, one end of the flexible partition away from the guiding bottom plate is fixed on the top corner of the mixing cabin; the front and back sides of the guiding bottom plate and the flexible partition abut against the inner wall of the mixing cabin, and together form a receiving groove, the profile of the receiving groove changes with the deflection of the guiding bottom plate, and is used for guiding the collected crushed material to the inclined side; both ends of the guiding bottom plate are provided with discharge ports, and a pair of symmetrical gravity type opening and closing units are symmetrically arranged at the bottom of the guiding bottom plate, when the guiding bottom plate deflects to one side, the gravity type opening and closing units slide to the same side under the action of gravity, so as to open the discharge port on the lower side to realize the discharging.

[0007] Further, the gravity type opening and closing unit comprises a flow limiting partition plate slidingly arranged at the bottom of the guiding bottom plate, the flow limiting partition plate and the bottom wall center of the guiding bottom plate are rigidly connected with pull blocks, and the pull blocks are connected through springs; when the guiding bottom plate is in a horizontal state, the spring keeps the original length and can pull the flow limiting partition plates on both sides to close the corresponding discharge ports; when the guiding bottom plate is inclined, the flow limiting partition plates on both sides slide along the bottom of the guiding bottom plate, so that the discharge port on the lower side is opened, and the discharge port on the higher side is still blocked by the flow limiting partition plate.

[0008] Further, the molten material vertical reactor comprises a heating barrel detachably fixed on the bottom wall of the mixing cabin, and a mixing part is rotatably arranged in the heating barrel; the mixing part is composed of a vertical roller and a grid fixed on the side of the vertical roller, the vertical roller movably penetrates through the heating barrel and is rigidly connected with a first bevel gear rotatably arranged on the bottom of the mixing cabin; the bottom of the side of the heating barrel is provided with a discharge valve capable of discharging molten plastic.

[0009] Further, the end surface of the grid of the mixing part is fixed with a scraping strip, the side of the scraping strip is attached to the inner wall of the heating barrel and forms an arc-shaped chamfer.

[0010] Further, the axial driving part comprises a connecting rod movably arranged at the bottom of the mixing cabin, one end of the connecting rod extends to the center of the bottom wall of the mixing cabin and is provided with a rotary driving part, the other end of the connecting rod is bent upward at the front side of the mixing cabin and is rigidly connected with a hollow guide rod, a pneumatic cylinder is further arranged at the bottom of the front side of the mixing cabin, the telescopic shaft of the pneumatic cylinder is rigidly connected with the connecting rod, and the pneumatic cylinder is used to control the linear movement of the connecting rod, the hollow guide rod and the rotary driving part, when the connecting rod and the hollow guide rod jointly carry the rotary driving part to be positioned on the central axis of the device, the rotary driving part is equidistant from the first bevel gears on the left and right sides.

[0011] Further, the reversing adjusting part comprises a first gear rotatably arranged at the front side of the mixing cabin, a retreat handle which is perpendicular to the plane of the first gear is rigidly connected to the surface side of the first gear, and the retreat handle is movably inserted into the hollow guide rod; a second gear is engaged and assembled above the first gear, the shaft center of the second gear is rigidly connected with a rotating shaft, the rotating shaft passes through the front wall of the mixing cabin in a movable penetrating manner and is fixed with the guide base, the directional movement of the hollow guide rod can drive the first gear to rotate, and the second gear and the material guiding part connected therewith are driven to rotate in the moving direction of the hollow guide rod in a synchronous manner through transmission engagement, so as to guide the flow and discharge.

[0012] Further, the rotary driving part comprises a chassis which is slidably connected to the outer bottom wall of the mixing cabin, the chassis is fixedly connected with the connecting rod, and a torque output unit is arranged at the bottom of the chassis, the output shaft of the torque output unit extends through the chassis to the two sides and is fixedly connected with the second bevel gears, and the second bevel gears can be in meshing driving with the first bevel gears after contacting the first bevel gears.

[0013] Further, a partition cabin is arranged between the crushing cabin and the mixing cabin, a horizontally movable flow control part is movably arranged in the partition cabin, a flow intercepting plate is fixed to the end of the flow control part and movably penetrates a predetermined slide way of the front wall of the mixing cabin, the flow intercepting plate is rigidly connected with a rack which is above the second gear and in meshing with the second gear, and a calibration opening is formed in the middle of the flow control part and is aligned with a predetermined discharge opening in the partition cabin; when the rack is driven by the second gear to move the flow control part to a position beside the partition cabin, the calibration opening is misaligned with the discharge opening to be closed, so as to block the channel of the crushed material into the material guiding part.

[0014] Further, the crushing cabin comprises a feeding area which is communicated with the feeding opening of the crushing cabin, a crushing area for accommodating a crushing mechanism is arranged below the feeding area, a temporary storage area is communicated below the crushing area, the bottom wall of the temporary storage area is arranged to be inclined downward to the center, the top of the temporary storage area is communicated with the crushing area, and the bottom of the temporary storage area is communicated with the partition cabin, and overflow openings are formed in the bottom of the crushing area and located above the temporary storage area.

[0015] Technical effects and advantages of the present application: The distribution type blending system of the application realizes the switching and alternating melting of the crushed material path through the linkage of the cylinder telescopic shaft, the hollow guide rod and the horizontal movement of the rotary drive part; taking the right side melt mixing vertical reactor injection as an example: the hollow guide rod moves right to drive the first gear to rotate counterclockwise, the transmission guide tray rotates clockwise, and the crushed material is injected into the melt mixing vertical reactor in a directional manner; after the second bevel gear meshes with the right side first bevel gear, the first bevel gear can be driven to rotate, and the crushed material is melted by the mixing part; the system can be switched to the left side melt mixing vertical reactor injection in reverse, while discharging the right side melt, realizing the alternating continuous processing, solving the efficiency bottleneck problem of single heating box; the design controls the injection path and the melting process through mechanical linkage, improving the processing capacity and operation continuity. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application.

[0017] Figure 2 It is a schematic diagram of the Figure 1 structure and its partial cross-sectional view.

[0018] Figure 3 It is a front view of the Figure 2 structure of the application.

[0019] Figure 4 It is a schematic diagram of the Figure 2 remaining part after cutting off the crushing cabin in the structure of the application.

[0020] Figure 5 It is a schematic diagram of the Figure 4 changing state of the distribution type blending system in the structure of the application.

[0021] Figure 6 It is a bottom perspective view of the Figure 5 structure of the application.

[0022] Figure 7 It is a schematic diagram of the flow control part and rack connection structure of the application.

[0023] Figure 8 It is a schematic diagram of the second gear, material guide part and processing box connection structure of the application.

[0024] Figure 9 It is a bottom perspective view of the material guide part structure of the application.

[0025] Figure 10 It is a schematic diagram of the axial drive part, rotary drive part, melt mixing vertical reactor, first gear and processing box connection structure of the application.

[0026] Figure 11 It is a schematic diagram of the rotary drive part structure of the application.

[0027] The reference signs are: 1, processing box; 11, crushing cabin; 111, feeding area; 112, temporary storage area; 113, crushing area; 114, visual window; 115, overflow port; 12, mixing cabin; 13, partition cabin; 131, discharge port; 2, base; 3, crushing mechanism; 4, flow control part; 41, intercepting plate; 42, calibration port; 5, material guiding part; 51, material guiding bottom plate; 511, discharge port; 52, flexible partition layer; 53, gravity type opening and closing unit; 531, flow limiting partition plate; 5311, plate surface; 5312, guide wheel; 532, spring; 533, telescopic sleeve; 6, molten material mixing vertical reactor; 61, heating barrel; 62, mixing element; 63, discharge valve; 64, first bevel gear; 7, axial driving part; 71, connecting rod; 72, hollow guide rod; 73, air cylinder; 74, sliding block; 75, limiting sliding plate; 8, reversing adjusting part; 81, first gear; 811, retreat handle; 82, second gear; 83, rack; 9, rotary driving part; 91, bottom frame; 92, torque output unit; 93, second bevel gear. DETAILED DESCRIPTION

[0028] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples. The molten equipment for engineering plastic production involved in the present application is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0029] Referring to Figures 1 to 6 The present application provides a molten equipment for engineering plastic production, which comprises a processing box 1. The inside of the processing box 1 is provided with two cabins from top to bottom, which are a crushing cabin 11 and a mixing cabin 12. The crushing cabin 11 is internally provided with a crushing mechanism 3. The mixing cabin 12 is internally provided with a distribution type blending system. The distribution type blending system comprises a material guiding part 5 rotatably arranged below the crushing mechanism 3. Below the material guiding part 5, there are two molten material mixing vertical reactors 6 arranged symmetrically left and right and fixed on the bottom wall of the mixing cabin 12. The front side of the mixing cabin 12 is movably provided with an axial driving part 7 which can move horizontally and linearly. The two sides of the axial driving part 7 are provided with rotary driving parts 9, which are used to alternately trigger the transmission tasks of the axial driving part 7 and the two molten material mixing vertical reactors 6. The top of the axial driving part 7 is further provided with a reversing adjusting part 8 located on the front side of the mixing cabin 12. When the axial driving part 7 moves linearly, the torque is transmitted via the reversing adjusting part 8, so as to drive the material guiding part 5 to deflect at the same side, thereby guiding the crushed material to be discharged into the molten material mixing vertical reactor 6 on the left side or the right side to trigger the molten material mixing. It is particularly pointed out in this embodiment that the bottom of the processing box 1 is provided with a support fixed to the ground, which lifts the processing box 1 off the ground by a certain height, which is at least sufficient to accommodate the horizontal linear movement adjustment of the shaft drive part 7 carrying the rotary drive part 9; the support can be specifically selected as a base 2 rigidly connected to the four corners of the bottom wall of the mixing cabin 12; The crushing mechanism 3 is composed of two relatively rotatable rollers for crushing, gears rigidly connected to the ends of the rollers and engaged with each other, and a servo motor for driving, which belongs to the existing patent disclosed technology, so this application will not be described again.

[0030] Referring to Figures 5 to 6 , Figures 8 to 11 The material guiding part 5 includes a material guiding bottom plate 51 located in the mixing cabin 12, and a flexible partition 52 fixed to the top corners of the mixing cabin 12 at the left and right ends of the material guiding bottom plate 51; the front and back sides of the material guiding bottom plate 51 and the flexible partition 52 abut against the inner walls of the mixing cabin 12, and together form a receiving groove, the profile of which changes with the deflection of the material guiding bottom plate 51, for guiding the collected crushed materials to the inclined side; the left and right ends of the material guiding bottom plate 51 are provided with discharge openings 511, and a pair of left-right symmetrical gravity type opening and closing units 53 are symmetrically arranged at the bottom; when the material guiding bottom plate 51 deflects to one side, the gravity type opening and closing units 53 slide to the same side under the action of gravity, thereby opening the discharge opening 511 of the downward inclined side to realize material discharge; The molten mixing vertical reactor 6 includes a heating barrel 61 detachably fixed to the bottom wall of the mixing cabin 12, and a mixing member 62 rotatably arranged in the heating barrel 61; the mixing member 62 is composed of a vertical roller and a grid fixed to the circumferential side of the vertical roller, and the vertical roller penetrates through the heating barrel 61 and is rigidly connected with a first bevel gear 64 rotatably installed at the bottom of the mixing cabin 12; the circumferential bottom of the heating barrel 61 is provided with a discharge valve 63 capable of discharging molten plastic; The shaft drive part 7 includes a connecting rod 71 movably arranged at the bottom of the mixing cabin 12, one end of the connecting rod 71 extending to the center of the bottom wall of the mixing cabin 12 and mounting the rotary drive part 9, and the other end of the connecting rod 71 upwardly bending at the front side of the mixing cabin 12 and rigidly connecting with a hollow guide rod 72, and a pneumatic cylinder 73 is also installed at the front side of the bottom of the mixing cabin 12, the extension shaft of which is rigidly connected with the connecting rod 71, for controlling the linear movement of the connecting rod 71, the hollow guide rod 72 and the rotary drive part 9; when the connecting rod 71 and the hollow guide rod 72 jointly carry the rotary drive part 9 to be positioned on the central axis of the equipment, the rotary drive part 9 is equidistant from the first bevel gears 64 on the left and right sides; The reversing adjusting part 8 comprises a first gear 81 rotatably installed on the front side of the mixing cabin 12, and a retreat handle 811 rigidly connected to the surface side of the first gear 81 and vertically to the plane of the first gear 81, the retreat handle 811 being embedded in the hollow guide rod 72 in a movable plug-in manner; a second gear 82 is engaged and assembled above the first gear 81, the shaft center of the second gear 82 being rigidly connected to a rotating shaft which penetrates through the front wall of the mixing cabin 12 in a movable penetrating manner and is fixed with the guide base 51; the directional movement of the hollow guide rod 72 can drive the first gear 81 to rotate, and through the transmission engagement, the second gear 82 and the material guiding part 5 connected therewith are synchronously rotated towards the moving direction of the hollow guide rod 72 to guide and discharge the materials; It is particularly stated in the embodiment that the gravity type opening and closing unit 53 comprises flow limiting partitions 531 slidably arranged on the bottom of the guide base 51, and the flow limiting partitions 531 and the bottom wall of the guide base 51 are rigidly connected with pull blocks, and the pull blocks are connected through springs 532; when the guide base 51 is in a horizontal state, the springs 532 keep the original length and can pull the flow limiting partitions 531 on both sides to close the corresponding discharge ports 511; when the guide base 51 is inclined, the flow limiting partitions 531 on both sides slide along the bottom of the guide base 51, so that the discharge port 511 on the lower side is opened, and the discharge port 511 on the higher side is still blocked by the flow limiting partitions 531; The flow limiting partition 531 is composed of a plate surface 5311 and guide wheels 5312 fixed on the front and back sides of the plate surface 5311, and the guide wheels 5312 are slidably clamped in the sliding grooves prearranged in the bottom wall of the guide base 51; The gravity type opening and closing unit 53 further comprises a telescopic sleeve 533 arranged between the pull blocks and above the spring 532, which is used to prevent the broken materials from falling into the spring 532 when the broken materials fall from the opened discharge port 511, so as to avoid the interference in the subsequent use; The left and right side walls of the mixing cabin 12 are provided with detachable sealing plates, so that when the distribution type blending system fails, the sealing plates can be removed and the components in the mixing cabin 12 can be maintained; the sealing plates are provided with holes corresponding to the discharge valves 63, so that the discharge valves 63 can be projected out; The grid end surface of the mixing member 62 is fixed with a scraping strip, the edge side of the scraping strip is attached to the inner wall of the heating barrel 61 and forms an arc-shaped chamfer, so that when the mixing member 62 rotates, the broken materials can be stirred and melted by the grid, and the melted broken materials adhered to the inner wall of the heating barrel 61 can be scraped off by the scraping strip, so as to avoid the adhesion of the materials; The bottom of the front wall of the mixing cabin 12 is fixedly installed with a limiting slide plate 75, the limiting slide plate 75 is slidably clamped with a sliding block 74 inside, and the end of the sliding block 74 extends and is inserted into the hollow guide rod 72, which can effectively enhance the stability of the hollow guide rod 72 in the process of linear movement; In the gear transmission, the rotation circle number ratio of the two gears is inversely proportional to the gear number ratio, that is: The rotation circle number of the pinion gear / the rotation circle number of the gear wheel = the gear number of the gear wheel / the gear number of the pinion gear; Substitute known conditions, the pinion gear turns 1 / 4 turn, the gear turns 1 / 8 turn: the gear teeth number is 2 times of the pinion gear teeth number; namely when the first gear 81 rotates 90 degrees, the second gear 82 rotates 45 degrees; The rotating driving part 9 comprises a chassis 91 slidably connected to the bottom wall outside the mixing cabin 12, the chassis 91 is fixedly connected with the connecting rod 71, a torque output unit 92 is installed at the bottom of the chassis 91, the output shaft of the torque output unit 92 extends to both sides and penetrates the chassis 91 and is fixedly connected with a second bevel gear 93, the second bevel gear 93 can be driven after being in contact with the first bevel gear 64 and forming meshing driving with the first bevel gear 64; The torque output unit 92 comprises a servo motor, a screw rod arranged at the output end of the servo motor, a driving gear meshing with the screw rod, a driven gear meshing with the driving gear and a rotating shaft fixedly penetrating the driven gear, the end of the rotating shaft is rigidly connected with the second bevel gear 93, and the above structure is a conventional technical solution in the field, therefore, the present application will not be described in detail.

[0031] With reference to Figures 2 to 4 And Figures 7 to 8 In order to solve the quantitative feeding problem of the material guiding part 5, the equipment structure needs to be further optimized, specifically, a partition cabin 13 is arranged between the crushing cabin 11 and the mixing cabin 12, a flow control part 4 which can move horizontally is movably arranged in the partition cabin 13, a flow intercepting plate 41 is fixedly arranged at the end of the flow control part 4 and movably penetrates a slide way which is arranged in the front wall of the mixing cabin 12, the flow intercepting plate 41 is rigidly connected with a rack 83 which is arranged above the second gear 82 and meshes with the second gear 82, and a calibration opening 42 which can be aligned with a prearranged discharging opening 131 in the partition cabin 13 is arranged in the middle of the flow control part 4; when the rack 83 is driven by the second gear 82 and moves to the side position in the partition cabin 13, the calibration opening 42 is misaligned with the discharging opening 131 and is closed, so that the channel of the crushed material into the material guiding part 5 is blocked; In order to avoid the channel of the crushed material into the material guiding part 5 being blocked after the temporary storage area 112 is full, ensure the continuous operation of the equipment, the structure of the crushing cabin 11 is optimized: the crushing cabin 11 comprises a feeding area 111 which is communicated with the feeding opening of the crushing cabin 11, a crushing area 113 for accommodating the crushing mechanism 3 is arranged below the feeding area 111, the temporary storage area 112 is communicated below the crushing area 113, the bottom wall of the temporary storage area 112 is arranged to be inclined downward to the center, the top of the temporary storage area 112 is communicated with the crushing area 113, the bottom of the temporary storage area 112 is communicated with the partition cabin 13, and overflow openings 115 which are arranged above the temporary storage area 112 are arranged on both sides of the bottom of the crushing area 113; when the crushed material is excessively accumulated in the temporary storage area 112, the excess crushed material can overflow through the overflow openings 115, so that the equipment can continuously operate without being blocked; The visible windows 114 which are arranged below the lower layer of the feeding area 111 are also arranged on both sides of the top of the crushing area 113.

[0032] Working principle of the present application: Plastic items to be processed can be fed into the feed inlet on the top wall of the crushing chamber 11. After entering the feeding area 111, the plastic items are crushed by the crushing mechanism 3, and the resulting scrap falls into the temporary storage area 112. This process is the scrap generation stage. Figures 1 to 2 ; When the equipment is in its initial state, the connecting rod 71 and the hollow guide rod 72 together carry the rotary drive unit 9 to be positioned on the central axis of the equipment, ensuring that the distance between the second bevel gear 93 and the first bevel gears 64 on the left and right sides is equal. At this time, under the guidance of the hollow guide rod 72, the first gear 81 lowers its outer edge retraction handle 811 to the lowest point and is collinear with the hollow guide rod 72, thereby driving the meshing second gear 82 to adjust the feeding part 5 to a horizontal position, so that the gravity opening and closing unit 53 automatically levels and closes the discharge port 511, realizing the complete crushed material collection capacity of the feeding part 5. At the same time, the rack 83 is driven by the second gear 82 to carry the flow control unit 4 to the center position of the partition chamber 13, so that the alignment port 42 is aligned and connected with the discharge port 131, thereby establishing a channel for crushed material to enter the feeding part 5. Subsequently, the crushed material generated in the crushed material generation stage can enter the closed feeding part 5 through the established channel to complete the collection. This process is the material receiving stage (see Figures 2 to 4 ); When a certain amount of crushed material is received in the material guiding part 5, the distribution type blending system is started, the crushed material processing path is switched, the telescopic shaft of the air cylinder 73 carries the connecting rod 71, the hollow guide rod 72 and the rotary driving part 9 to perform horizontal linear movement adjustment, and the crushed material is guided into the left or right molten mixing vertical reactor 6 to trigger molten mixing. Taking the case that the crushed material enters the right molten mixing vertical reactor 6 as an example: the telescopic shaft of the air cylinder 73 drives the connecting rod 71, the hollow guide rod 72 and the rotary driving part 9 to move rightward to approach the right first bevel gear 64. In the process of moving rightward, the hollow guide rod 72 pulls the retreat handle 811 to move counterclockwise around the first gear 81 as the axis point, drives the first gear 81 to rotate counterclockwise, and then drives the meshed second gear 82 and the connected material guiding bottom plate 51 to rotate clockwise. In this process, the left and right flexible partitions 52 of the material guiding bottom plate 51 are correspondingly contracted or expanded to adapt to the deflection action. At the same time, the left and right gravity type opening and closing units 53 slide rightward and downward relative to the discharge port 511 under the action of gravity when the material guiding bottom plate 51 is inclined. Specifically, the right flow limiting partition 531 stretches the spring 532 and is staggered with the discharge port 511, the left flow limiting partition 531 compresses the spring 532 and keeps shielding the discharge port 511, forming a state that the right discharge port 511 is open and the left discharge port 511 is closed, and guiding the crushed material to be injected into the molten mixing vertical reactor 6 through the right open discharge port 511. At the same time, when the material guiding bottom plate 51 is inclined rightward and downward with the second gear 82 as the axis, the second gear 82 can drive the meshed rack 83 and the connected flow control part 4 to linearly displace rightward, so that the alignment port 42 is staggered with the discharge port 131 and the discharge port 131 is closed, so as to block the channel of the crushed material into the material guiding part 5. When the second bevel gear 93 moves rightward to mesh with the right first bevel gear 64, the linked components reach the action limit and stop. At this time, the right molten mixing vertical reactor 6 receives the crushed material from the material guiding part 5. At this time, the torque output unit 92 drives the second bevel gear 93 to drive the meshed first bevel gear 64 to rotate, the first bevel gear 64 drives the mixing member 62 to rotate to stir the crushed material in the heating barrel 61, so as to make the crushed material uniformly heated and quickly molten. This process is the distribution molten stage (see Figures 5 to 6 ); When the partition cabin 13 between the temporary storage area 112 and the material guiding part 5 is separated, the crushed material crushed by the crushing mechanism 3 will be accumulated in the temporary storage area 112. Due to the limited volume of the temporary storage area 112, the excess crushed material can overflow through the overflow port 115 and be re-fed into the feeding port, so as to avoid the situation that the temporary storage area 112 is burst when the channel of the crushed material into the material guiding part 5 is blocked, and to ensure the continuous operation of the equipment; When the scraps in the material guiding part 5 are discharged into the right side melt mixing vertical reactor 6, the distribution type blending system can return to the original state and re-enter the material receiving stage by reversing the distribution melting stage, that is, the scraps can again enter the closed material guiding part 5 through the built channel to complete the collection; after the material guiding part 5 receives the scraps again, the processing path is switched according to the mechanism of the distribution melting stage, so that the scraps enter the left side melt mixing vertical reactor 6; at this time, the left side melt mixing vertical reactor 6 receives the scraps supplied by the material guiding part 5 and performs stirring and melting, and at the same time, the melt in the right side heating barrel 61 is discharged through the discharge valve 63 to prepare for the next round of scraps entering; thus, the alternating continuous processing of plastics is realized, and the problems of limited processing capacity, interrupted operation and low efficiency of the existing melt equipment caused by a single heating tank are solved.

[0033] The above is only one preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art should include the equivalent substitution or modification within the technical range disclosed by the present application, according to the technical plan and improvement concept of the present application, which should be included in the protection of the present application.

Claims

1. A melting device for engineering plastic production, comprising a processing box (1), the inside of the processing box (1) is provided with two cabins from top to bottom, namely a crushing cabin (11) and a mixing cabin (12), the crushing cabin (11) is provided with a crushing mechanism (3), characterized in that: The mixing cabin (12) is provided with a distribution type blending system; The distribution type blending system comprises a material guiding part (5) rotatably arranged below the crushing mechanism (3), below the material guiding part (5) are arranged two symmetrical molten material vertical reactors (6) fixed on the bottom wall of the mixing cabin (12), the front side of the mixing cabin (12) is movably provided with an axial driving part (7) capable of linearly moving horizontally, the two sides of the axial driving part (7) are equipped with rotary driving parts (9) for alternately triggering the transmission task of the axial driving part (7) and the two molten material vertical reactors (6), the top of the axial driving part (7) is further provided with a reversing adjusting part (8) located at the front side of the mixing cabin (12), when the axial driving part (7) linearly moves, the torque is transmitted through the reversing adjusting part (8), so as to drive the material guiding part (5) to deflect at the same side, thereby guiding the crushed material to be discharged into the molten material vertical reactor (6) on the left side or the right side to trigger the molten material mixing.

2. The melting apparatus for engineering plastic production according to claim 1, characterized by: The material guiding part (5) comprises a material guiding bottom plate (51) located in the mixing cabin (12), the left and right ends of the material guiding bottom plate (51) are fixed with flexible partitions (52), and the ends of the flexible partitions (52) away from the material guiding bottom plate (51) are fixed at the top corners of the mixing cabin (12); the front and back sides of the material guiding bottom plate (51) and the flexible partitions (52) abut against the inner walls of the mixing cabin (12), and together form a receiving groove, the profile of the receiving groove changes with the deflection of the material guiding bottom plate (51), and the receiving groove is used for guiding the collected crushed material to the inclined side; the left and right ends of the material guiding bottom plate (51) are provided with discharge ports (511), and a pair of symmetrical gravity type opening and closing units (53) are symmetrically arranged at the bottom of the material guiding bottom plate (51); when the material guiding bottom plate (51) deflects to one side, the gravity type opening and closing units (53) slide to the same side under the action of gravity, so as to open the discharge port (511) on the lower side and realize the discharge.

3. The melting apparatus for engineering plastic production according to claim 2, characterized by: The gravity type opening and closing unit (53) comprises a flow limiting partition (531) slidably arranged at the bottom of the material guiding bottom plate (51), the flow limiting partition (531) and the bottom wall center of the material guiding bottom plate (51) are rigidly connected with pull blocks, and the pull blocks are connected through springs (532); when the material guiding bottom plate (51) is in a horizontal state, the springs (532) keep the original length and can pull the two sides of the flow limiting partition (531) to close the corresponding discharge port (511); when the material guiding bottom plate (51) is inclined, the two sides of the flow limiting partition (531) slide along the bottom of the material guiding bottom plate (51), so that the discharge port (511) on the lower side is opened, and the discharge port (511) on the higher side is still blocked by the flow limiting partition (531).

4. The melting apparatus for engineering plastic production according to claim 1 or 3, characterized in that: The molten material vertical reactor (6) comprises a heating barrel (61) detachably fixed to the bottom wall of the mixing cabin (12), and a mixing member (62) rotatably arranged in the heating barrel (61); the mixing member (62) is composed of a vertical roller and a grid fixed to the circumferential side of the vertical roller, the vertical roller penetrates through the heating barrel (61) and is rigidly connected with a first bevel gear (64) rotatably arranged at the bottom of the mixing cabin (12); the bottom of the circumferential side of the heating barrel (61) is provided with a discharge valve (63) capable of discharging molten plastic.

5. The melting apparatus for engineering plastic production according to claim 4, characterized in that: The grid end face of the mixing member (62) is fixed with a scraping strip, and the side of the scraping strip is attached to the inner wall of the heating barrel (61) and forms an arc-shaped chamfer.

6. The melting apparatus for engineering plastic production according to claim 1, characterized by: The axial driving part (7) comprises a connecting rod (71) movably arranged at the bottom of the mixing cabin (12), one end of the connecting rod (71) extends to the center of the bottom wall of the mixing cabin (12) and is provided with a rotary driving part (9), the other end of the connecting rod (71) is upwardly bent at the front side of the mixing cabin (12) and is rigidly connected with a hollow guide rod (72), a pneumatic cylinder (73) is further arranged at the bottom of the front side of the mixing cabin (12), the pneumatic cylinder (73) is rigidly connected with the connecting rod (71) through the extension shaft, and the pneumatic cylinder (73) is used to control the linear movement of the connecting rod (71), the hollow guide rod (72) and the rotary driving part (9), when the connecting rod (71) and the hollow guide rod (72) jointly carry the rotary driving part (9) to be positioned on the central axis of the equipment, the rotary driving part (9) is equidistant from the first bevel gears (64) on the left and right sides.

7. The melting apparatus for engineering plastic production according to claim 6, characterized by: The reversing adjusting part (8) comprises a first gear (81) rotatably arranged at the front side of the mixing cabin (12), the surface side of the first gear (81) is rigidly connected with a retreat handle (811) perpendicular to the plane of the first gear (81), and the retreat handle (811) is movably inserted into the hollow guide rod (72); a second gear (82) is engagedly arranged above the first gear (81), the shaft center of the second gear (82) is rigidly connected with a rotating shaft, the rotating shaft is movably penetrated through the front wall of the mixing cabin (12) and is fixed with the guide base plate (51), the directional movement of the hollow guide rod (72) can drive the first gear (81) to rotate, and the second gear (82) and the material guiding part (5) connected with the second gear (82) are driven to rotate in the direction of the movement direction of the hollow guide rod (72) to guide the flow and discharge.

8. The melting apparatus for engineering plastic production according to claim 4, wherein: The rotary driving part (9) comprises a base frame (91) slidably clamped outside the bottom wall of the mixing cabin (12), the base frame (91) is fixedly connected with the connecting rod (71), the bottom of the base frame (91) is provided with a torque output unit (92), the output shaft of the torque output unit (92) extends through the base frame (91) to the two sides and is fixedly connected with a second bevel gear (93), and the second bevel gear (93) can be in meshing drive with the first bevel gear (64) after contacting the first bevel gear (64).

9. The melting apparatus for engineering plastic production according to claim 7, characterized by: The breaking cabin (11) and the mixing cabin (12) are provided with a partition cabin (13), a horizontally movable flow control part (4) is movably arranged in the partition cabin (13), the end of the flow control part (4) is fixed with a flow intercepting plate (41) and movably penetrates through the front wall of the mixing cabin (12) through a preset slide way, the flow intercepting plate (41) is rigidly connected with a rack (83) above the second gear (82) and engaged with the second gear (82), and a calibration port (42) is formed in the middle of the flow control part (4) and is aligned with a preset discharge port (131) in the partition cabin (13); when the rack (83) is driven by the second gear (82) to move the flow control part (4) to the side position in the partition cabin (13), the calibration port (42) is misaligned with the discharge port (131) to be closed, so that the channel of the broken material into the material guiding part (5) is blocked.

10. The melting apparatus for engineering plastic production according to claim 9, wherein: The crushing chamber (11) comprises a feeding area (111) communicated with the feeding port thereof, a crushing area (113) for accommodating the crushing mechanism (3) is arranged below the feeding area (111), a temporary storage area (112) is communicated below the crushing area (113), the bottom wall of the temporary storage area (112) is arranged to be inclined downward to the center, the top of the temporary storage area (112) is communicated with the crushing area (113), the bottom of the temporary storage area (112) is communicated with the partition cabin (13), and overflow ports (115) located above the temporary storage area (112) are arranged on both sides of the bottom of the crushing area (113).

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