A high efficiency screening dicer

Abstract

This invention relates to the field of pelletizing technology, and particularly to a high-efficiency screening pelletizer, comprising an outer cylinder, an inner cylinder, a forming disc, a spiral feeding shaft, a pelletizing blade, and a screening cylinder. An electric cylinder is mounted on the top of the screening cylinder via a mounting bracket. The electric cylinder is rotatably connected to a telescopic rod, and the electric cylinder is connected to two connecting rods. One end of each connecting rod passes through the top of the screening cylinder and is fitted with an annular sealing post. A gear post is fixed to the outer wall of the telescopic rod. A drive motor is mounted on the top of the screening cylinder, and a drive gear meshing with the gear post is fixed to the outer wall of the drive motor's output end. In this invention, during activated carbon pelletizing, the drive motor drives the spiral feeding shaft to rotate, and the pelletizer cuts the activated carbon into pellets. The resulting activated carbon pellets fall into the screening cylinder. Simultaneously, a cleaning mechanism cleans the inside of the screening cylinder, allowing some small activated carbon particles or broken raw materials to be directly screened and returned to the outer cylinder for reuse, reducing equipment and processing costs.

Description

[0001] This case is a divisional application based on the invention patent filed on January 3, 2025, with application number CN202510008599.1 and titled "A Pelletizer". Technical Field

[0002] This invention relates to the field of pelletizer technology, and in particular to a high-efficiency screening pelletizer. Background Technology

[0003] There are various methods for producing activated carbon, one of which is extrusion to produce activated carbon granules. Existing extrusion activated carbon granulators generally use a cylinder to drive an extrusion rod to push the material out or a screw shaft to extrude the material, and then simultaneously use a cutter to granulate it to produce activated carbon granules.

[0004] The existing pelletizer directly discharges and collects the activated carbon granules after pelletizing. Then, a screening machine is used to screen out some small particles or broken raw materials. Finally, these raw materials are reused. This method requires multiple machines for processing and requires workers to perform multiple feeding and unloading operations, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a pelletizer that can perform full screening directly after activated carbon is pelletized, and the small activated carbon particles obtained by screening can be directly reused, thereby reducing the waste of raw materials and reducing processing costs.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A pelletizer includes an outer cylinder and an inner cylinder coaxially arranged, with a gap between the bottom of the inner cylinder and the bottom of the inner cavity of the outer cylinder. A feed pipe is connected to the side wall of the outer cylinder. A forming disc with several discharge holes is installed on the top of the inner cylinder. The diameter of the forming disc is smaller than the outer diameter of the inner cylinder. A spiral feeding shaft is rotatably connected to the top of the inner cavity of the inner cylinder. The bottom of the spiral feeding shaft extends out of the bottom of the inner cylinder. The rotating shaft of the spiral feeding shaft passes through the forming disc and is equipped with a pelletizing knife. A screening cylinder with a conical bottom cross-section is installed on the top of the outer cylinder. The screening holes of the screening cylinder are located inside the outer cylinder. A discharge pipe is connected to the bottom of the screening cylinder. The discharge end of the discharge pipe extends through the side wall of the outer cylinder. The top of the inner cylinder passes through the discharge pipe and is located inside the screening cylinder. A gap is provided between the inner wall of the discharge pipe and the outer wall of the inner cylinder. An electric cylinder is mounted on the top of the screening cylinder via a mounting bracket. The telescopic end of the electric cylinder passes through the mounting bracket and rotates... The screen cylinder is connected to a telescopic rod, the other end of which is connected to the rotating shaft of the screw feed shaft. Two connecting rods are symmetrically connected to the outer wall of the telescopic end of the electric cylinder. One end of each connecting rod passes through the top of the screening cylinder and is fitted with an annular sealing column. The sealing column is inserted between the outer wall of the inner cylinder and the inner wall of the discharge pipe. A gear column is fixedly connected to the outer wall of the telescopic rod. The gear column is located above the screening cylinder. A drive motor is installed at the top of the screening cylinder. A drive gear that meshes with the gear column is fixedly connected to the outer wall of the output end of the drive motor. When the screening cylinder discharges material, the electric cylinder drives the sealing column to rise, causing the bottom of the sealing column to detach from the top of the discharge pipe, and the top of the sealing column extends out of the top of the forming plate and surrounds the top of the inner cylinder. When the screening cylinder performs screening, the bottom of the sealing column is inserted into the discharge pipe, and the top of the sealing column is located below the forming plate. A cleaning mechanism for cleaning the screening cylinder is installed in the inner cavity of the screening cylinder.

[0008] The beneficial effects of this invention are as follows:

[0009] In this invention, during activated carbon pelletizing, raw materials are added to the outer cylinder through a feed pipe. A drive motor then rotates a screw conveyor shaft, transporting the raw materials from the outer cylinder upwards through the inner cylinder and extruding them through the discharge hole. The raw materials are then cut into pellets by a pelletizing blade, resulting in activated carbon granules. These granules fall into a screening cylinder, where a cleaning mechanism simultaneously cleans the inside, allowing smaller granules or broken raw materials to be screened and returned to the outer cylinder for reuse. This achieves timely screening of activated carbon granules and reuse of raw materials, reducing equipment and processing costs. After a period of screening, an electric cylinder raises the connecting rod and sealing column, causing the bottom of the sealing column to detach from the discharge pipe, opening the discharge pipe. This allows the activated carbon granules in the screening cylinder to be discharged along the gap between the discharge pipe and the inner cylinder, achieving activated carbon discharge. Simultaneously, during discharge, the top of the sealing column rises above the forming plate, creating a sealed space between the forming plate and the sealing column, preventing newly cut activated carbon from falling into the screening cylinder and avoiding mixing of activated carbon granules. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the pelletizer of the present invention;

[0011] Figure 2 This is a schematic diagram of the front section structure of the pelletizer of the present invention;

[0012] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0013] Figure 4 This is a schematic diagram of the inner cylinder and its connecting components in the pelletizer of the present invention;

[0014] Figure 5 This is a schematic diagram of the structure of the electric cylinder and its connecting components in Embodiment 1 of the present invention;

[0015] Figure 6 This is a schematic diagram of the cleaning mechanism in Embodiment 1 of the present invention;

[0016] Figure 7 This is a schematic diagram of the structure of the receiving frame and its connecting components in Embodiment 2 of the present invention;

[0017] Figure 8 This is an exploded structural diagram of the receiving frame and its connecting components in Embodiment 2 of the present invention;

[0018] Figure 9 This is a schematic diagram of the cleaning mechanism in Embodiment 3 of the present invention.

[0019] Label Explanation:

[0020] 1. Outer cylinder; 2. Inner cylinder; 3. Feed pipe; 4. Forming disc; 5. Spiral feed shaft; 6. Pelletizer; 7. Screening cylinder; 8. Discharge pipe; 9. Electric cylinder; 10. Telescopic rod; 101. Fixed shaft; 102. Sliding sleeve; 103. Limiting strip; 11. Connecting rod; 12. Sealing column; 121. Receiving frame; 122. Baffle; 123. Driving component; 1231. Fixed base; 1232. Second rotating gear; 1233. Rack ; 1234, First limiting block; 1235, Second limiting block; 124, Opening; 125, Rotating rod; 13, Gear column; 14, Drive motor; 15, Drive gear; 16, Cleaning mechanism; 161, Incomplete gear; 162, First internal gear ring; 163, External gear ring; 164, Concave connecting seat; 165, Cleaning rod; 166, Cleaning brush; 167, Second internal gear ring; 168, First rotating gear; 17, Slag discharge pipe. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figure 1-9 The technical solution adopted in this invention is as follows:

[0023] A pelletizer includes an outer cylinder and an inner cylinder coaxially arranged, with a gap between the bottom of the inner cylinder and the bottom of the inner cavity of the outer cylinder. A feed pipe is connected to the side wall of the outer cylinder. A forming disc with several discharge holes is installed on the top of the inner cylinder. The diameter of the forming disc is smaller than the outer diameter of the inner cylinder. A spiral feeding shaft is rotatably connected to the top of the inner cavity of the inner cylinder. The bottom of the spiral feeding shaft extends out of the bottom of the inner cylinder. The rotating shaft of the spiral feeding shaft passes through the forming disc and is equipped with a pelletizing knife. A screening cylinder with a conical bottom cross-section is installed on the top of the outer cylinder. The screening holes of the screening cylinder are located inside the outer cylinder. A discharge pipe is connected to the bottom of the screening cylinder. The discharge end of the discharge pipe extends through the side wall of the outer cylinder. The top of the inner cylinder passes through the discharge pipe and is located inside the screening cylinder. A gap is provided between the inner wall of the discharge pipe and the outer wall of the inner cylinder. An electric cylinder is mounted on the top of the screening cylinder via a mounting bracket. The telescopic end of the electric cylinder passes through the mounting bracket and rotates... The screen cylinder is connected to a telescopic rod, the other end of which is connected to the rotating shaft of the screw feed shaft. Two connecting rods are symmetrically connected to the outer wall of the telescopic end of the electric cylinder. One end of each connecting rod passes through the top of the screening cylinder and is fitted with an annular sealing column. The sealing column is inserted between the outer wall of the inner cylinder and the inner wall of the discharge pipe. A gear column is fixedly connected to the outer wall of the telescopic rod. The gear column is located above the screening cylinder. A drive motor is installed at the top of the screening cylinder. A drive gear that meshes with the gear column is fixedly connected to the outer wall of the output end of the drive motor. When the screening cylinder discharges material, the electric cylinder drives the sealing column to rise, causing the bottom of the sealing column to detach from the top of the discharge pipe, and the top of the sealing column extends out of the top of the forming plate and surrounds the top of the inner cylinder. When the screening cylinder performs screening, the bottom of the sealing column is inserted into the discharge pipe, and the top of the sealing column is located below the forming plate. A cleaning mechanism for cleaning the screening cylinder is installed in the inner cavity of the screening cylinder.

[0024] As can be seen from the above description, the beneficial effects of the present invention are as follows:

[0025] In this invention, during activated carbon pelletizing, raw materials are added to the outer cylinder through a feed pipe. A drive motor then rotates a screw conveyor shaft, transporting the raw materials from the outer cylinder upwards through the inner cylinder and extruding them through the discharge hole. The raw materials are then cut into pellets by a pelletizing blade, resulting in activated carbon granules. These granules fall into a screening cylinder, where a cleaning mechanism simultaneously cleans the inside, allowing smaller granules or broken raw materials to be screened and returned to the outer cylinder for reuse. This achieves timely screening of activated carbon granules and reuse of raw materials, reducing equipment and processing costs. After a period of screening, an electric cylinder raises the connecting rod and sealing column, causing the bottom of the sealing column to detach from the discharge pipe, opening the discharge pipe. This allows the activated carbon granules in the screening cylinder to be discharged along the gap between the discharge pipe and the inner cylinder, achieving activated carbon discharge. Simultaneously, during discharge, the top of the sealing column rises above the forming plate, creating a sealed space between the forming plate and the sealing column, preventing newly cut activated carbon from falling into the screening cylinder and avoiding mixing of activated carbon granules.

[0026] Furthermore, the cleaning mechanism includes an incomplete gear, a first internal gear ring and an external gear ring arranged coaxially. The first internal gear ring and the external gear ring are rotatably connected to the top of the inner cavity of the screening cylinder. Several concave connecting seats are fixedly connected at equal angles between the bottom of the first internal gear ring and the external gear ring. A cleaning rod is connected to the bottom of the concave connecting seat. A cleaning brush adapted to the bottom of the inner cavity of the screening cylinder is connected to the bottom of the cleaning rod. The incomplete gear is located between the first internal gear ring and the external gear ring, and the incomplete gear meshes with the first internal gear ring and the external gear ring in sequence.

[0027] As described above, during cleaning, the incomplete gear first meshes with the first internal gear ring, driving the concave connecting seat, cleaning rod, and cleaning brush to rotate in the forward direction. Then, the incomplete gear separates from the first internal gear ring and meshes with the outer gear ring, driving the cleaning brush to rotate in the reverse direction. Thus, as the incomplete gear continues to rotate, the cleaning brush rotates back and forth, thereby preventing the activated carbon particles in the screening cylinder from moving more irregularly during screening and improving screening efficiency.

[0028] Furthermore, the drive motor is a dual-head motor, and the two output ends of the dual-head motor are respectively connected to a drive gear and an incomplete gear.

[0029] As can be seen from the above description, using a dual-head motor to synchronously drive the spiral feeding shaft for feeding, the pelletizing knife for pelletizing, and the cleaning mechanism for cleaning reduces the number of motors used and lowers equipment costs.

[0030] Furthermore, the cross-section of the bottom of the inner cavity of the outer cylinder is conical, and the bottom of the outer cylinder is connected to a slag discharge pipe.

[0031] As can be seen from the above description, setting the bottom of the inner cavity of the outer cylinder to a conical shape allows the material inside the outer cylinder to flow towards the center, thus facilitating the feeding of the screw feeder shaft. Furthermore, the slag discharge pipe allows the residual material inside the outer cylinder to be discharged.

[0032] Furthermore, the bottom of the spiral feeding shaft is inserted into the slag discharge pipe.

[0033] As can be seen from the above description, inserting the screw feeder shaft into the slag discharge pipe can prevent material from accumulating in the slag discharge pipe. That is, the rotation of the screw feeder shaft can discharge the material in the slag discharge pipe. When the slag discharge pipe is discharging slag, the reverse rotation of the screw feeder shaft can quickly discharge the residual material in the outer cylinder.

[0034] Furthermore, the telescopic rod includes a fixed shaft, a sliding sleeve is slidably connected to the outer wall of the fixed shaft, a plurality of limiting strips are provided on the outer wall of the fixed shaft, a limiting groove is provided on the inner wall of the sliding sleeve to cooperate with the limiting strips, and the gear column is fixedly connected to the outer wall of the sliding sleeve.

[0035] As can be seen from the above description, when the electric cylinder extends or retracts, it can drive the sliding sleeve to slide along the fixed shaft, thereby realizing the extension and retraction of the telescopic rod. Furthermore, the cooperation between the limiting strip and the limiting groove can ensure both linear sliding between the sliding sleeve and the fixed shaft and synchronous rotation between the two.

[0036] Furthermore, the side wall of the sealing column is connected to a receiving frame with a hollow bottom via a connecting plate, and the top of the receiving frame is higher than the top of the sealing column. Two baffles for sealing the bottom of the receiving frame are flipped between the inner walls on both sides of the receiving frame, and the two baffles are located on both sides of the inner cylinder. The receiving frame is symmetrically installed with driving components connected to the two baffles on the inner walls. The connecting rod is connected to the driving component. The two baffles have openings at their close ends that cooperate with the inner cylinder. Rotating rods are symmetrically fixed to the two ends of the baffles, and the rotating rods are connected to the driving component. The rotating rods are located in the middle of the baffles.

[0037] As described above, when the screening cylinder discharges material, the receiving frame rises with the sealing column, and the baffle at the bottom of the receiving frame flips to close the receiving frame. This allows the activated carbon particles generated during continuous pelletizing to be thrown into the receiving frame by the pelletizing blade, preventing the activated carbon particles from accumulating on the forming plate and affecting subsequent pelletizing operations. After the screening cylinder discharges material, the receiving frame descends with the sealing column, causing the sealing column to re-insert between the discharge pipe and the inner cylinder, while simultaneously opening the baffle at the bottom of the receiving frame, thus discharging the received activated carbon particles into the screening cylinder for screening.

[0038] Furthermore, when the screening cylinder discharges material, the top of the sealing column is located below the forming plate, and the receiving frame is higher than the forming plate.

[0039] As can be seen from the above description, the top of the sealing column is located below the forming plate while the receiving frame is higher than the forming plate. This allows the activated carbon particles cut by the forming plate to preferentially enter the height difference between the sealing column and the forming plate, preventing the activated carbon particles from flowing back onto the forming plate. The height of the receiving frame is higher than the forming plate, which can prevent the activated carbon particles from being thrown out and falling into the screening cylinder.

[0040] Furthermore, the driving component includes a hollow fixed base, the rotating rod is inserted into the inner cavity of the fixed base and a second rotating gear is installed thereon, a rack is meshed between the two second rotating gears, and the lower section of the rack is a blank area (i.e. the lower section of the rack does not have teeth that mesh with the second rotating gears), the top of the rack is connected to the connecting rod, and the top and bottom of the rack protrude from the top and bottom of the fixed base respectively and are respectively equipped with a first limiting block and a second limiting block.

[0041] As described above, when the connecting rod rises with the electric cylinder, it drives the rack to rise, causing the second rotating gears on both sides of the rack to mesh. This causes the second rotating gears and the baffle to flip, sealing the bottom of the receiving frame. As the rack continues to rise, the second limiting block contacts the bottom of the fixed seat and pushes the fixed seat upward, thus driving the receiving frame and the sealing column upward. When the electric cylinder descends, the second limiting block separates from the fixed seat, allowing the receiving frame and the sealing column to slide downward under their own weight. At this time, the blank area of ​​the lower section of the rack contacts the second rotating gear, preventing the baffle from flipping. This continues until the teeth on both sides of the rack mesh with the second rotating gear, causing the baffles on both sides to flip (at this time, the sealing column has been inserted into the gap between the discharge pipe and the inner cylinder), opening the bottom of the receiving frame and discharging the activated carbon particles in the receiving frame into the screening cylinder.

[0042] Please refer to Figures 1 to 6 As shown, Embodiment 1 of the present invention is as follows:

[0043] Please refer to Figures 1 to 5A pelletizer includes an outer cylinder 1 and an inner cylinder 2 coaxially arranged, with a gap between the bottom of the inner cylinder 2 and the bottom of the inner cavity of the outer cylinder 1. A feed pipe 3 is connected to the side wall of the outer cylinder 1. A forming disc 4 with several discharge holes is installed on the top of the inner cylinder 2. The diameter of the forming disc 4 is smaller than the outer diameter of the inner cylinder 2. A spiral feeding shaft 5 is rotatably connected to the top of the inner cavity of the inner cylinder 2. The bottom of the spiral feeding shaft 5 extends out of the bottom of the inner cylinder 2. The rotating shaft of the spiral feeding shaft 5 passes through the forming disc 4 and is equipped with a pelletizing knife 6. A screening cylinder 7 with a conical bottom cross-section is installed on the top of the outer cylinder 1, and the screening holes of the screening cylinder 7 are located inside the outer cylinder 1. The bottom of the screening cylinder 7 is connected to a discharge pipe 8, and the discharge end of the discharge pipe 8 extends through the side wall of the outer cylinder 1. The top of the inner cylinder 2 passes through the discharge pipe 8 and is located inside the screening cylinder 7. A gap is provided between the inner wall of the discharge pipe 8 and the outer wall of the inner cylinder 2. An electric cylinder 9 is installed on the top of the screening cylinder 7 through a mounting bracket. The telescopic end of the electric cylinder 9 extends through the mounting bracket and is rotatably connected to a telescopic rod 10. The other end of the telescopic rod 10 is connected to the rotating shaft of the screw feeding shaft 5. Two connecting rods 11 are symmetrically connected to the outer wall of the telescopic end of the electric cylinder 9. One end of each connecting rod 11 passes through the top of the screening cylinder 7 and is fitted with an annular sealing column 12. The sealing column 12 is inserted between the outer wall of the inner cylinder 2 and the inner wall of the discharge pipe 8. A gear column 13 is fixedly connected to the outer wall of the telescopic rod 10. The gear column 13 is located above the screening cylinder 7. A drive motor 14 is installed on the top of the screening cylinder 7. The outer wall of the output end of 14 is fixedly connected to a drive gear 15 that meshes with the gear column 13. When the screening cylinder 7 discharges material, the electric cylinder 9 drives the sealing column 12 to rise, causing the bottom of the sealing column 12 to disengage from the top of the discharge pipe 8, and the top of the sealing column 12 extends out of the top of the forming plate 4 and surrounds the top of the inner cylinder 2. When the screening cylinder 7 performs screening, the bottom of the sealing column is inserted into the discharge pipe 8, and the top of the sealing column 12 is located below the forming plate 4. The inner cavity of the screening cylinder 7 is equipped with a cleaning mechanism 16 for cleaning the screening cylinder 7.

[0044] Please refer to Figure 6The cleaning mechanism 16 includes an incomplete gear 161, a first internal gear ring 162 and an external gear ring 163 coaxially arranged. Both the first internal gear ring 162 and the external gear ring 163 are rotatably connected to the top of the inner cavity of the screening cylinder 7. A plurality of concave connecting seats 164 are fixedly connected at equal angles between the bottoms of the first internal gear ring 162 and the external gear ring 163. A cleaning rod 165 is connected to the bottom of each concave connecting seat 164. A cleaning brush 166, adapted to the bottom of the inner cavity of the screening cylinder 7, is connected to the bottom of the cleaning rod 165. The incomplete gear 161 is located on the first internal gear ring 161. Between the 2 and the external gear ring 163, the incomplete gear 161 is sequentially meshed with the first internal gear ring 162 and the external gear ring 163; the concave connecting seat 164 connects the first internal gear ring 162 and the external gear ring 163. In this way, when the incomplete gear 161 meshes with the first internal gear ring 162, it can drive the external gear ring 163 and the sweeping rod to rotate 165. When the incomplete gear 161 meshes with the external gear ring 163, it can also drive the first internal gear ring 162 and the sweeping rod 165 to connect. The concave shape can avoid interference from the drive shaft of the drive motor 14 when rotating.

[0045] Please refer to Figure 5 The drive motor 14 is a dual-head motor, and the two output ends of the dual-head motor are respectively connected to the drive gear 15 and the incomplete gear 161.

[0046] Please refer to Figure 5 The telescopic rod 10 includes a fixed shaft 101, a sliding sleeve 102 is slidably connected to the outer wall of the fixed shaft 101, a plurality of limiting strips 103 are provided on the outer wall of the fixed shaft 101, and a limiting groove that cooperates with the limiting strips 103 is opened on the inner wall of the sliding sleeve 102. The gear column 13 is fixedly connected to the outer wall of the sliding sleeve 102.

[0047] Please refer to Figure 2 The bottom of the inner cavity of the outer cylinder 1 has a conical cross-section, and the bottom of the outer cylinder 1 is connected to a slag discharge pipe 17. The bottom of the spiral feeding shaft 5 is inserted into the slag discharge pipe 17.

[0048] The working process of the pelletizer described above is as follows:

[0049] When activated carbon is granulated, the raw material is added into the outer cylinder 1 through the feed pipe 3. Since the bottom of the outer cylinder 1 is conical, the raw material will flow towards the center of the outer cylinder 1. Then, the drive motor 14 (double-headed motor) is started. One output end of the drive motor 14 drives the drive gear 15 to rotate. The drive gear 15 drives the gear column 13, the telescopic rod 10 and the screw feeding shaft 5 to rotate, thereby conveying the material in the outer cylinder 1 upward along the inner cylinder 2 and then extruding it through the discharge hole of the forming disc 4. At this time, the rotating shaft of the screw feeding shaft 5 can also synchronously drive the pelletizing knife 6 to rotate, cut the extruded strip material, and perform pelletizing operation. The granulated activated carbon particles are thrown out and fall into the screening cylinder 7.

[0050] Meanwhile, another output shaft of the drive motor 14 drives the incomplete gear 161 to rotate. The incomplete gear 161 first meshes with the first internal gear ring 162, thereby driving the concave connecting seat 164, the cleaning rod 165 and the cleaning brush 166 to rotate in the forward direction. While cleaning the inner wall of the screening cylinder 7, it can also drive the activated carbon particles to flow, thereby improving the screening efficiency. Then, the incomplete gear 161 disengages from the first internal gear ring 162 and then meshes with the external gear ring 163, driving the concave connecting seat 164, the cleaning rod 165 and the cleaning brush 166 to rotate in the reverse direction. Finally, with the continuous rotation of the incomplete gear 161, the cleaning brush 166 rotates continuously in both directions, thereby causing the material in the screening cylinder 7 to move irregularly, avoiding inertia, and thus further improving the screening effect.

[0051] The small granulated activated carbon or unformed materials obtained from screening fall directly into the outer cylinder 1 and mix with the materials inside, thus achieving material reuse. After screening for a period of time, the electric cylinder 9 is activated. The electric cylinder 9, through the connecting rod 11, first drives the sealing column 12 to rise to a certain height. Even if the top of the sealing column 12 is higher than the height of the forming disc 4, the bottom of the sealing column 12 is still inserted within the gap between the discharge pipe 8 and the inner cylinder 2. This ensures that when the cleaning brush 166 cleans, the newly granulated activated carbon particles will accumulate between the sealing column 12 and the forming disc 4 and will not be thrown into the screening cylinder 7, allowing the activated carbon particles in the screening cylinder 7 to be fully screened. Then, after a period of time, the electric cylinder 9 is activated again to drive the sealing column 12 to rise to a certain height. As column 12 continues to rise, the bottom of the sealing column 12 disengages from the discharge pipe 8, thereby opening the gap between the discharge pipe 8 and the inner cylinder 2, allowing the screened activated carbon particles to be discharged from the discharge pipe 8. After the activated carbon particles are completely discharged, the sealing column 12 is lowered by the electric cylinder 9 to re-seal the discharge pipe 8, and the activated carbon particles accumulated on the forming disc 4 can be thrown out again and fall into the screening cylinder 7 for screening. During this process, the gear column 13 remains engaged with the drive gear 15 to achieve uninterrupted pelletizing operation. This process is repeated to achieve uninterrupted pelletizing and screening of activated carbon particles, ensuring that the formed activated carbon particles meet production standards, and that the raw materials can be reused in a timely manner without causing waste.

[0052] After processing is completed, open the valve of the slag discharge pipe 17 and reverse the drive motor 14 to quickly discharge some of the residual raw materials accumulated in the outer cylinder 1 through the screw feed shaft 5.

[0053] Please refer to Figures 1 to 8 As shown, Embodiment 2 of the present invention is as follows:

[0054] The difference between this embodiment and Embodiment 1 is that:

[0055] Please refer to Figure 7 and Figure 8The sealing column 12 has a bottom-hollowed receiving frame 121 connected to its side wall via a connecting plate. The top of the receiving frame 121 is higher than the top of the sealing column 12. Two baffles 122 for sealing the bottom of the receiving frame 121 are flipped and connected between the inner walls of the receiving frame 121 on both sides. The two baffles 122 are located on both sides of the inner cylinder 2. The receiving frame 121 is symmetrically installed with driving components 123 connected to the two baffles 122 on both sides. The connecting rod 11 is connected to the driving component 123. When the screening cylinder 7 discharges material, the top of the sealing column 12 is located below the forming plate 4, and the receiving frame 121 is higher than the forming plate 4. The two baffles 122 have openings 124 at their close ends that cooperate with the inner cylinder 2. Rotating rods 125 are symmetrically fixed to the two ends of the baffles 122, and the rotating rods 125 are connected to the driving component 123. The rotating rods 125 are located in the middle of the baffles 122.

[0056] Please refer to Figure 1 and Figure 2 The driving component 123 includes a hollow fixed base 1231. The rotating rod 125 is inserted into the inner cavity of the fixed base 1231 and a second rotating gear 1232 is installed thereon. A rack 1233 is meshed between the two second rotating gears 1232. The top of the rack 1233 is connected to the connecting rod 11. The top and bottom of the rack 1233 protrude from the top and bottom of the fixed base 1231 respectively and a first limiting block 1234 and a second limiting block 1235 are installed thereon respectively.

[0057] The working process of the pelletizer described above is as follows:

[0058] When the sealing column 12 is about to rise for the first time, the connecting rod 11 drives the rack 1233 to slide upward. Then, the rack 1233 drives the second rotating gears 1232 on both sides to rotate, thereby causing the two baffles 122 to flip and block the bottom of the receiving frame 121. Then the rack 1233 continues to rise, and after the second limiting block 1235 contacts the fixed seat 1231, it drives the receiving frame 121 and the sealing column 12 to rise to a certain height. Even if the top of the receiving frame 121 is higher than the height of the forming plate 4, the bottom of the sealing column 12 is still inserted in the discharge pipe 8. At this time, during the continuous pelletizing process of the pelletizing knife 6, the activated carbon particles obtained by pelletizing can be thrown into the receiving frame 121, thereby preventing the activated carbon particles from accumulating on the forming plate 4. Then the electric cylinder 9 is started to make the receiving frame 121 and the sealing column 12 continue to rise, so that the sealing column 12 is separated from the discharge pipe 8. At this time, the top of the sealing column 12 is still lower than the height of the forming plate 4.

[0059] After the activated carbon granules are discharged, the electric cylinder 9 pushes the rack 1233 downward. At this time, the empty tooth areas on both sides of the rack 1233 first pass through the two second rotating gears 1232, and the second limiting block 1235 separates from the fixed seat 1231. Meanwhile, the receiving frame 121 and the sealing column 12 slide downward under their own gravity, causing the sealing column 12 to re-insert into the discharge pipe 8. Then, the gear teeth on both sides of the rack 1233 mesh with the second rotating gears 1232 again, causing the baffle 122 to flip and open the receiving frame. 121, causing the activated carbon particles in the receiving frame 121 to fall into the screening cylinder 7. Then, as the rack 1233 continues to descend (the upper section of the rack 1233 is also an empty tooth area), the second limiting block 1235 contacts the top of the fixed seat 1231, thereby applying pressure to the fixed seat 1231, the receiving frame 121 and the sealing column 12 through the second limiting block 1235, so that the sealing column 12 can be fully inserted into the discharge pipe 8, completing the discharge of activated carbon particles. This process is repeated to achieve uninterrupted production of activated carbon particles.

[0060] Please refer to Figures 1 to 9 As shown, Embodiment 3 of the present invention is as follows:

[0061] The difference between this embodiment and Embodiments 1 and 2 is that:

[0062] Please refer to Figure 9 The top of the inner cavity of the screening cylinder 7 is fixedly connected to a second internal toothed ring 167, and the second internal toothed ring 167 is located around the first internal toothed ring 162. The cleaning rod 165 is rotatably connected to the concave connecting seat 164. The outer wall of the cleaning rod 165 is fixedly connected to a first rotating gear 168 that meshes with the second internal toothed ring 167. The cleaning rod 165 and the cleaning brush 166 are hinged together by a hinge ball.

[0063] The working process of the pelletizer described above is as follows:

[0064] When the sweeping rod 165 rotates in both directions, the first rotating gear 168 meshes with the second internal gear ring 167, causing the sweeping rod 165 to rotate, which in turn causes the sweeping brush 166 to deflect at an angle, thereby sweeping the material accumulated below the screening cylinder 7 upwards, allowing the material to flow up and down, thus further improving the screening efficiency. The ball joint connection allows the sweeping brush 166 to adapt to the shape of the inner wall of the screening cylinder 7 when it rotates.

[0065] In summary, the present invention provides a high-efficiency screening pelletizer. During activated carbon pelletizing, raw materials are added to the outer cylinder through the feed pipe. Then, a drive motor drives the screw feed shaft to rotate, conveying the raw materials in the outer cylinder upwards through the inner cylinder and extruding them from the discharge hole. The raw materials are then cut and shaped by the pelletizing blade to obtain activated carbon granules. The obtained activated carbon granules fall into the screening cylinder. Simultaneously, a cleaning mechanism cleans the inside of the screening cylinder, allowing some small activated carbon granules or broken raw materials to be directly screened and returned to the outer cylinder for reuse. This achieves timely screening of activated carbon granules and reuse of raw materials, reducing equipment and processing costs. Furthermore, after the activated carbon granules have been screened for a period of time, an electric cylinder can drive the connecting rod and sealing column to rise, causing the bottom of the sealing column to detach from the discharge pipe and open. The discharge pipe allows activated carbon particles in the screening cylinder to be discharged along the gap between the discharge pipe and the inner cylinder, achieving activated carbon discharge. Simultaneously, during activated carbon discharge, the top of the sealing column rises above the forming disc, creating a sealed space between the forming disc and the sealing column. This prevents newly cut activated carbon from falling into the screening cylinder, avoiding mixing of activated carbon particles and making the screening more thorough. Furthermore, during the extension and retraction of the electric cylinder, the gear column remains engaged with the drive gear, ensuring that the spiral feeding shaft and pelletizing blade continue to rotate, achieving uninterrupted pelletizing operations and improving efficiency. Additionally, during activated carbon particle cleaning, a reciprocating cleaning mechanism cleans the particles in both directions, causing irregular movement and improving the screening effect.

[0066] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A pellet cutter characterized by, The device includes an outer cylinder and an inner cylinder arranged coaxially, with a gap between the bottom of the inner cylinder and the bottom of the inner cavity of the outer cylinder. A feed pipe is connected to the side wall of the outer cylinder. A forming disc with several discharge holes is installed on the top of the inner cylinder; the diameter of the forming disc is smaller than the diameter of the inner cylinder. A spiral feeding shaft is rotatably connected to the top of the inner cylinder, with its bottom extending beyond the bottom of the inner cylinder. The rotating shaft of the spiral feeding shaft passes through the forming disc and is equipped with a pelletizing knife. A screening cylinder with a conical bottom cross-section is installed on the top of the outer cylinder, with its screening holes located inside the outer cylinder. A discharge pipe is connected to the bottom of the screening cylinder, with its discharge end extending through the side wall of the outer cylinder. The top of the inner cylinder passes through the discharge pipe and is located inside the screening cylinder. A gap is provided between the inner wall of the discharge pipe and the outer wall of the inner cylinder. An electric cylinder is mounted on the top of the screening cylinder via a mounting bracket, with its extension end extending through the mounting bracket and rotatably connected. The device has a telescopic rod, the other end of which is connected to the rotating shaft of the screw feeding shaft. Two connecting rods are symmetrically connected to the outer wall of the telescopic end of the electric cylinder. One end of the two connecting rods passes through the top of the screening cylinder and is equipped with an annular sealing column. The sealing column is inserted between the outer wall of the inner cylinder and the inner wall of the discharge pipe. A gear column is fixed to the outer wall of the telescopic rod. The gear column is located above the screening cylinder. A drive motor is installed at the top of the screening cylinder. A drive gear that meshes with the gear column is fixed to the outer wall of the output end of the drive motor. When the screening cylinder discharges material, the electric cylinder drives the sealing column to rise, causing the bottom of the sealing column to disengage from the top of the discharge pipe. The top of the sealing column extends out of the top of the forming plate and surrounds the top of the inner cylinder. When the screening cylinder performs screening, the bottom of the sealing column is inserted into the discharge pipe, and the top of the sealing column is located below the forming plate. A cleaning mechanism for cleaning the screening cylinder is installed in the inner cavity of the screening cylinder. The cleaning mechanism includes an incomplete gear, a first internal gear ring and an external gear ring arranged coaxially. The first internal gear ring and the external gear ring are rotatably connected to the top of the inner cavity of the screening cylinder. Several concave connecting seats are fixedly connected at equal angles between the bottom of the first internal gear ring and the external gear ring. A cleaning rod is connected to the bottom of the concave connecting seat. A cleaning brush adapted to the bottom of the inner cavity of the screening cylinder is connected to the bottom of the cleaning rod. The incomplete gear is located between the first internal gear ring and the external gear ring, and the incomplete gear is sequentially meshed with the first internal gear ring and the external gear ring. The sealing column sidewall is connected to a receiving frame with a hollow bottom via a connecting plate, and the top of the receiving frame is higher than the top of the sealing column. The receiving frame is connected to two baffles on opposite sides of the inner wall for sealing the bottom of the receiving frame. The two baffles are located on both sides of the inner cylinder. The receiving frame is symmetrically installed with driving components connected to the two baffles on opposite sides of the inner wall. The connecting rod is connected to the driving components.

2. The dicer of claim 1, wherein The drive motor is a dual-head motor, and the two output ends of the dual-head motor are respectively connected to a drive gear and a partial gear.

3. The dicer of claim 1, wherein, The bottom of the inner cavity of the outer cylinder has a conical cross-section, and the bottom of the outer cylinder is connected to a slag discharge pipe.

4. The dicer of claim 3, wherein, The bottom of the spiral feed shaft is inserted into the slag discharge pipe.

5. The dicer of claim 1, wherein, The telescopic rod includes a fixed shaft, a sliding sleeve is slidably connected to the outer wall of the fixed shaft, a plurality of limiting strips are provided on the outer wall of the fixed shaft, a limiting groove is provided on the inner wall of the sliding sleeve to cooperate with the limiting strips, and the gear column is fixedly connected to the outer wall of the sliding sleeve.

6. The pelletizer of claim 1, wherein The two baffles have openings at their close ends that cooperate with the inner cylinder. Rotating rods are symmetrically fixed to the opposite ends of the baffles and are connected to the driving component. The rotating rods are located in the middle of the baffles.

7. The dicer of claim 1, wherein When the screening cylinder discharges material, the top of the sealing column is located below the forming plate, and the receiving frame is higher than the forming plate.

8. The dicer of claim 6, wherein, The driving component includes a hollow fixed base, the rotating rod is inserted into the inner cavity of the fixed base and a second rotating gear is installed thereon, a rack is meshed between the two second rotating gears, the top of the rack is connected to the connecting rod, and the top and bottom of the rack protrude from the top and bottom of the fixed base respectively and a first limiting block and a second limiting block are installed thereon respectively.

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