PE recycling granulation device

Abstract

The utility model relates to a PE regenerating granulating device, including support frame, two support frames are connected through the connection of two guide rods, the reversible filter mechanism of sliding joint is arranged on two guide rods, the reversible filter mechanism includes two -sided reversible main net disc, two -sided reversible main net disc both sides symmetrical setting side net disc and side head net disc, and the adjacent net disc is sealed and is inserted and is provided with pneumatic lock pin, two -sided reversible main net disc sets the feed inlet and the incoming material channel, and the electric control reversing valve is installed in the feed inlet, two -sided reversible main net disc, side net disc and side head net disc all connect the filter frame, and the filter cavity is formed between each net disc and filter frame, and the vertical discharge channel is set in each filter cavity bottom, two -sided reversible main net disc, side net disc and side head net disc form the horizontal discharge channel below the vertical discharge channel respectively, and each horizontal discharge channel is interconnected and forms the discharge port. The utility model can solve the problem of high -efficient low -energy bottleneck, reduce the labor intensity, and reduce the artificial cost.

Description

Technical Field

[0001] This utility model relates to the field of granulation equipment technology, specifically to a PE recycling granulation device. Background Technology

[0002] The development of pellet mill filter dies is closely related to the overall technological evolution of pellet mills. Early filter dies were relatively simple, with a limited range of applications, and could only be used with low-output regeneration pelletizing equipment.

[0003] There are many types of filter heads for recycling granulation equipment, each with its own advantages and disadvantages, but none of them can meet the requirements of high efficiency, low energy consumption, and high quality. For example, the automatic slag discharge head has the disadvantage of low filtration accuracy and cannot produce high-quality recycled raw materials. Another example is the traditional dual-die head with alternating screens. Although it has improved efficiency compared to the previous single-die head, its production capacity is still greatly limited and cannot meet the requirements of high efficiency and large output. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PE regeneration granulation device that can switch to filtration on the other side when one die head is blocked, achieving a high-efficiency and high-energy filtration effect. At the same time, the blocked die head facilitates the disassembly and replacement of the filter screen, reducing labor intensity and improving work efficiency.

[0005] This utility model is achieved through the following technical solution: A PE recycling and granulation device is provided, comprising two vertically spaced support frames connected by two guide rods. A reversible filter mechanism is slidably connected to the two guide rods. The reversible filter mechanism includes a centrally located, vertically positioned double-sided reversible main screen, with side screens and side-end screens symmetrically arranged on both sides of the main screen. Adjacent screens are sealed and interlocked, and each adjacent screen has a pneumatic locking pin at the top connection point for locking separation. The double-sided reversible main screen has interconnected inlets and outlets. The feed channel is equipped with an electrically controlled reversing valve installed in the feed inlet. The double-sided reversible main screen, side screen, and side end cap screen are all connected to detachable filter frames. Each screen forms a filter chamber with its corresponding filter frame. Adjacent filter chambers are connected, and each filter chamber has a vertical discharge channel at its bottom. The double-sided reversible main screen, side screen, and side end cap screen each form a transverse discharge channel below the vertical discharge channel, which is connected to the vertical discharge channel. The transverse discharge channels are interconnected and form a discharge port below the double-sided reversible main screen.

[0006] Preferably, the filter frame and each mesh disc are fitted with mutually abutting gaskets inside the filter chamber by screws.

[0007] The gasket can be placed between the filter frame and the mesh tray to prevent deformation due to high pressure during fixing, and to ensure that the filter chamber is not compressed.

[0008] Furthermore, the filter frame includes a bottom screen and an iron wire mesh frame with mesh size wire installed. The bottom screen has evenly spaced through holes, and one side of the bottom screen is inlaid with a ring of strongly magnetic buttons. The iron wire mesh frame is magnetically attached to the bottom screen.

[0009] The bottom screen tray separates the filter chambers from each other. The bottom screen tray has a magnetically attached iron wire mesh frame with strong magnetic buttons for filtration. The through holes on the bottom screen tray are larger than the filter holes of the wire mesh frame, which facilitates the passage of filtered materials. At the same time, the bottom screen tray supports the wire mesh frame to prevent it from deforming or compressing the filter chamber volume. The magnetic attachment of the iron wire mesh frame makes it easy to disassemble and replace.

[0010] Furthermore, the material inlet channel is located on the internal axis of the double-sided reversible main mesh disk, with open ends and the feed inlet located on the outer periphery of the double-sided reversible main mesh disk.

[0011] Furthermore, the two sides of the double-sided reversible main screen are respectively recessed to form reversing grooves, and the center of each reversing groove is vertically connected to an annular seat that communicates with the material inlet channel. The filter frame is respectively sleeved and installed between the annular seat and the reversing groove.

[0012] Furthermore, the side screen is recessed to form an installation groove on the side facing the double-sided reversible main screen, and a flow channel with open ends is provided in the center of the side screen, which is directly opposite the annular seat. The filter frame is sleeved and installed between the installation groove and the flow channel.

[0013] Furthermore, a fixing groove is recessed on the side of the side end cap mesh facing the side mesh, and a fixing seat is set in the center of the side end cap mesh that is directly opposite the flow channel. The filter frame is sleeved between the fixing groove and the fixing seat.

[0014] Furthermore, the double-sided reversible main mesh disk, side mesh disk, and side end mesh disk are connected to each other by tenon and mortise joints of annular parts and annular grooves. The bottoms of two adjacent mesh disks are limited to slide by limiting blocks and limiting grooves, maintaining a fixed distance when the two adjacent mesh disks slide apart.

[0015] A limiting groove and a limiting block are provided between the bottom of two adjacent mesh trays to slide and connect, so that each mesh tray maintains a relative distance when separated, so as to realize disassembly and filter replacement.

[0016] Furthermore, guide sleeves that slide in cooperation with guide rods are respectively provided at both ends of the outer diameter direction of the side end cap mesh.

[0017] Guide sleeves are provided at both ends of the outer diameter of the two side end caps, which are fitted onto the two guide rods between the two support frames to achieve guiding sliding, making it convenient to adjust the positional distance between the side mesh discs and the side end cap mesh discs, and facilitating the replacement of the wire mesh frame.

[0018] Furthermore, each support frame is horizontally mounted with a hydraulic oil jack that faces the side end cap mesh, and the piston rod end of the hydraulic oil jack is vertically connected to the side end cap mesh.

[0019] By using a hydraulic jack to drive the side end cap screen to move laterally, the mold head on the blocked side can be easily disassembled, cleaned, and replaced. After replacing the filter screen, the reaction-driven hydraulic jack will press and lock the side end cap screen and the side end cap screen of the single mold head back together, so that it can be used for subsequent filtration.

[0020] The beneficial effects of this utility model are: This invention improves efficiency by employing multi-stage filtration units and an automatic alternating mode, increasing filtration capacity and avoiding downtime. The entire filter head is divided into left and right symmetrical parts, with three individual filter discs on each side of the main reversible filter disc. Each filter disc consists of a filter screen base and two supports plus two wire mesh composite plates. Each filter unit is supported and fixed by a fixed positioning beam, and each filter unit is an independent automatic sliding filter disc. The units are joined together using a mortise and tenon structure to achieve a sealing effect, and are fixed with a hydraulic positioning lock to prevent gaps from appearing due to excessive pressure.

[0021] This invention can solve the bottleneck problem of high efficiency and low energy consumption encountered in current recycling granulation equipment for filtration, reduce recycling waste, maximize the recycling of recycled plastics, reduce labor intensity, reduce the required labor costs, reduce the cost of consumables, and increase the profit margin of operators. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0024] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0025] Figure 4 This is a schematic diagram of the structure of the double-sided reversible main chassis in this utility model.

[0026] Figure 5 for Figure 4 Side view.

[0027] Figure 6 This is a cross-sectional schematic diagram of the side mesh disk in this utility model.

[0028] Figure 7 This is a cross-sectional schematic diagram of the bottom mesh plate of the side sealing head in this utility model.

[0029] Figure 8This is a schematic diagram of the structure of the bottom mesh tray of this utility model.

[0030] Figure 9 for Figure 8 A cross-sectional schematic diagram.

[0031] Figure 10 This is a schematic diagram of the iron wire mesh frame in this utility model.

[0032] Figure 11 This is a schematic diagram of the installation structure of the side sealing head bottom mesh plate and filter frame of this utility model.

[0033] Figure 12 for Figure 11 A schematic diagram of the explosive decomposition.

[0034] Figure 13 This is a schematic diagram of the structure of the electrically controlled directional valve in this utility model.

[0035] As shown in the figure: 1-Support frame, 2-Guide rod, 3-Feed inlet, 4-Double-sided reversible main mesh tray, 5-Side mesh tray I, 6-Side mesh tray II, 7-Side end cap mesh tray, 8.1-Vertical discharge channel, 8.2-Horizontal discharge channel, 9-Hydraulic oil top, 10-Electrically controlled reversing valve, 11-Pressure reversing electromagnetic starter, 12-Angled shovel reversing rod; 13-Double-sided reversible main chassis, 14-Flange, 15-Guide 16-Outlet, 17-Wire hole, 18-Incoming material channel, 19-Annular groove, 20-Flow channel, 21-Fixed seat, 22-Fixed groove, 23-Bottom screen, 24-Button magnet, 25-Through hole, 26-Screw, 27-Iron wire mesh frame, 28-Mesh count wire mesh, 29-Filter chamber, 30-Washer ring, 31-Pneumatic locking pin, 32-Reversing groove, 33-Annular seat, 34-Mounting groove. Detailed Implementation

[0036] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0037] A PE recycling and granulation device includes two vertically spaced support frames 1 connected by two guide rods 2. A reversible filter mechanism is slidably connected to the two guide rods 2. The reversible filter mechanism includes a centrally located, vertically positioned double-sided reversible main screen 4. Side screens and side end screens 7 are symmetrically arranged on both sides of the double-sided reversible main screen 4. In this embodiment, two side screens are provided on each side, namely side screen I5 and side screen II6. Guide sleeves 15 that slidably engage with the guide rods 2 are respectively provided at both ends of the outer diameter of the two side end screens 7. A hydraulic top 9 is horizontally mounted on each support frame 1, directly opposite the side end screen 7. The piston rod end of the hydraulic top 9 is vertically connected to the side end screen 7.

[0038] The two adjacent mesh trays are sealed and plugged together, and each of the two adjacent mesh trays is provided with a pneumatic locking pin 31 for locking and separating at the top connection point; the double-sided reversible main mesh tray 4 is provided with an interconnected feed port 3 and a material inlet channel 18, and an electrically controlled reversing valve 10 is installed in the feed port 3. In this invention, the electrically controlled reversing valve 10 includes a pressure reversing electromagnetic starter 11 and a shovel reversing rod 12. By monitoring the filtration pressure on the filter side, when it exceeds the set threshold, the pressure reversing electromagnetic starter 11 starts to drive the shovel reversing rod 12 to rotate at a fixed angle. With the help of a motor and gears, the shovel reversing rod 12 can be driven to rotate at a fixed angle, so that the shovel slope can be reversed, thereby facilitating the switching of the feeding direction and guiding the material in the feed port 3 into different side molds for filtration.

[0039] The double-sided reversible main screen 4, side screens, and side end cap screen 7 are all connected to detachable filter frames. Each screen forms a filter chamber 29 with its corresponding filter frame. Adjacent filter chambers 29 are connected, and each filter chamber 29 has a vertical discharge channel 8.1 at its bottom. The double-sided reversible main screen 4, side screens, and side end cap screen 7 each form a transverse discharge channel 8.2 below the vertical discharge channel 8.1, which is connected to the vertical discharge channel 8.1. The transverse discharge channels 8.2 are interconnected and form a discharge port 16 below the double-sided reversible main screen 4.

[0040] The filter frame and each mesh disc are fitted with mutually abutting washers 30 inside the filter chamber 29 by screws 26.

[0041] The filter frame includes a bottom screen 23 and an iron wire mesh frame 27 with a mesh size 28 installed. The bottom screen 23 has evenly spaced through holes 25. One side of the bottom screen 23 is inlaid with a ring-shaped set of strong magnetic buttons 24. The iron wire mesh frame 27 is magnetically attached to the bottom screen 23.

[0042] The material inlet channel 18 is located on the internal axis of the double-sided reversible main mesh disk 4. Both ends of the material inlet channel 18 are open, and the inlet 3 is opened on the outer periphery of the double-sided reversible main mesh disk 4.

[0043] The two sides of the double-sided reversible main mesh disk 4 are respectively recessed to form reversing grooves 32. The center of the two reversing grooves 32 is respectively vertically connected to the annular seat 33 that communicates with the material channel 18. The filter frame is respectively sleeved and installed between the annular seat 33 and the reversing groove 32.

[0044] The side of the side mesh disk facing the double-sided reversible main mesh disk 4 has a recessed mounting groove 34. The center of the side mesh disk has a flow channel 20 that is directly opposite the annular seat 33 and open at both ends. The filter frame is fitted and installed between the mounting groove 34 and the flow channel 20.

[0045] A fixing groove 22 is recessed on the side of the side end cap screen 7 facing the side screen. A fixing seat 21 is provided at the center of the side end cap screen 7, which is directly opposite the flow channel 20. The filter frame is sleeved between the fixing groove 22 and the fixing seat 21. In this embodiment, the side screen I5 and the side screen II6 have the same structure and are arranged between the double-sided reversible main screen 4 and the side end cap screen 7.

[0046] The double-sided reversible main screen 4, side screens, and side end screen 7 are connected to each other via tenon and mortise joints using annular sections and annular grooves 19. The bottoms of adjacent screens are limited by limiting blocks and limiting grooves, maintaining a fixed distance when adjacent screens slide apart. When one side of the mold head is blocked, the hydraulic oil top 9 on that side pulls each screen apart sequentially. The limiting action of the limiting grooves and limiting blocks ensures a fixed distance between adjacent screens, facilitating filter replacement.

[0047] The working process of this invention: When the molten plastic enters through the feed inlet 3, it flows into the feed channel 18 according to the opening direction of the electrically controlled reversing valve 10. Then, the material will sequentially reach one side of the double-sided reversible main mesh plate 4, then enter the side mesh plate I5, the side mesh plate II6, and finally fill the side end mesh plate 7. Under the pushing pressure of the previous process, the fluid plastic material will pass through each mesh plate and be filtered by the iron wire mesh frame 27 to intercept impurities in the material. The filtered material is discharged through the vertical discharge channel 8.1 into the horizontal discharge channel 8.2 and discharged through the discharge port 6 to enter the next process.

[0048] When the filtration pressure on one side reaches a certain value, the electrically controlled reversing valve 10 will automatically start to switch, feeding material to the other side for filtration. The side that stops feeding will remain for 5 minutes after the electrically controlled reversing valve 10 switches, then automatically begin the screen changing process. This 5-minute period is to drain the material from the chamber, reducing material waste and facilitating screen changing after emptying the material. After 5 minutes, the pneumatic locking pins 31, controlled by a pneumatic valve, will be activated sequentially. The pneumatic locking pins 31 are activated 5 minutes after the reversing valve switches.

[0049] First, the pneumatic locking pin 31 between the double-sided reversible main screen 4 and the side screen I5 is opened. Then, the hydraulic jack 9 is activated, pulling the side screen I5, side screen II6, and side end cap screen 7 together away from the double-sided reversible main screen 4. When the separation distance reaches 20cm, the hydraulic jack 9 stops moving. At this time, the pneumatic locking pin 31 between the side screen I5 and side screen II6 opens, and the hydraulic jack 9 then starts running, pulling the side screen II6 and side end cap screen 7 for a distance of 20cm before stopping. At this time, the pneumatic locking pin 31 between the side screen II6 and side end cap screen 7 opens, and the hydraulic jack 9 pulls the side end cap screen 7 until the distance between the side screen II6 and side end cap screen 7 is pulled to 20cm before stopping. At this time, each filter screen on one side is separated, and the worker can easily remove the iron wire mesh frame 27 from each screen. The iron wire mesh frame 27 and the bottom wire mesh tray 23 are held together by strong magnetic buttons 24 embedded in the bottom wire mesh tray 23. Workers can easily remove them and replace them with a new iron wire mesh frame 27. After replacing the four mesh trays, a one-button reset can be initiated. The hydraulic oil top 9 pushes the double-sided reversible main wire mesh tray 4, side wire mesh tray I5, side wire mesh tray II6 and side end wire mesh tray 7 together in sequence. When they reach the fixed position, the pneumatic locking pins 31 at the top of each connection point are activated and inserted downwards to lock the connection point, preventing material leakage due to gaps caused by high pressure in each wire mesh tray.

[0050] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A PE recycling and granulation device, characterized in that: The system includes two vertically spaced support frames connected by two guide rods. A reversible filter mechanism is slidably connected to the two guide rods. The reversible filter mechanism includes a centrally located, vertically positioned double-sided reversible main screen. Side screens and side end screens are symmetrically arranged on both sides of the double-sided reversible main screen. Adjacent screens are sealed and interlocked, and pneumatic locking pins for locking separation are provided at the top connection point between adjacent screens. The double-sided reversible main screen has interconnected feed inlets and material channels, and an electrically controlled reversing valve is installed in the feed inlet. The double-sided reversible main screen, side screens, and side end screens are all connected to detachable filter frames. Each screen forms a filter chamber with its corresponding filter frame. Adjacent filter chambers are interconnected, and a vertical discharge channel is provided at the bottom of each filter chamber. The double-sided reversible main mesh, side mesh, and side end mesh each form a transverse discharge channel below the vertical discharge channel, which is connected to the vertical discharge channel. The transverse discharge channels are interconnected and form a discharge port below the double-sided reversible main mesh.

2. The PE recycling granulation device according to claim 1, characterized in that: The filter frame and each mesh disc are fitted with mating gaskets inside the filter chamber by screws.

3. The PE recycling granulation device according to claim 1 or 2, characterized in that: The filter frame includes a bottom screen and an iron wire mesh frame with mesh size wire installed. The bottom screen has evenly spaced through holes, and one side of the bottom screen is inlaid with a ring of strong magnetic buttons. The iron wire mesh frame is magnetically attached to the bottom screen.

4. The PE recycling granulation device according to claim 1, characterized in that: The material inlet channel is located on the internal axis of the double-sided reversible main mesh disk. Both ends of the material inlet channel are open, and the feed port is located on the outer periphery of the double-sided reversible main mesh disk.

5. The PE recycling granulation device according to claim 1, characterized in that: The double-sided reversible main screen has reversing grooves recessed on both sides. The center of each reversing groove is vertically connected to an annular seat that communicates with the material inlet channel. The filter frame is respectively sleeved and installed between the annular seat and the reversing groove.

6. The PE recycling granulation device according to claim 1, characterized in that: The side screen is recessed to form an installation groove on the side facing the double-sided reversible main screen. The center of the side screen has a flow channel that is directly opposite the annular seat and open at both ends. The filter frame is fitted and installed between the installation groove and the flow channel.

7. The PE recycling granulation device according to claim 6, characterized in that: A fixing groove is recessed on the side of the side end cap mesh facing the side mesh, and a fixing seat is set in the center of the side end cap mesh that is directly opposite the flow channel. The filter frame is sleeved between the fixing groove and the fixing seat.

8. The PE recycling granulation device according to claim 1, characterized in that: The double-sided reversible main mesh, side mesh, and side end mesh are connected to each other by tenon and mortise joints with annular parts and annular grooves. The bottoms of two adjacent meshes are limited to slide by limiting blocks and limiting grooves, maintaining a fixed distance when the two adjacent meshes slide apart.

9. The PE recycling granulation device according to claim 1, characterized in that: Guide sleeves that slide with guide rods are respectively provided at both ends of the outer diameter direction of the side end cap mesh.

10. The PE recycling granulation device according to claim 1, characterized in that: Each support frame is horizontally mounted with a hydraulic jack that faces the side end cap mesh. The piston rod end of the hydraulic jack is vertically connected to the side end cap mesh.

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