A drum dryer with anti-blocking function

Abstract

The utility model discloses a kind of anti-blocking function's roller dryer, belong to drying equipment technical field, including rotatable roller, roller includes feed end and discharge end, the inside of roller is sequentially provided with several guide plates, beat apart device and raise material device from feed end to discharge end, and at least one anti-blocking device is fixedly arranged in the inside close to discharge end;Anti-blocking device includes conical anti-blocking lining, several lugs and steel wire rope, conical anti-blocking lining is coaxially arranged with roller, and the tip of conical anti-blocking lining is towards feed end, the outer wall of conical anti-blocking lining is connected with the inner wall of roller by several steel wire ropes, several lugs are fixedly arranged on the inner wall of roller, one end of steel wire rope passes through the center hole of corresponding lug and is fixed by rope clamp, and the other end is fixedly connected with conical anti-blocking lining.This application is connected by piece type conical lining, flexible steel wire rope, realizes the technical effect from structural optimization, high -efficient anti -blocking, durable reliable to widely adapted.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically to a drum dryer with anti-clogging function. Background Technology

[0002] Rotary drum dryers are continuous drying equipment widely used in industries such as mineral processing, coal, chemicals, and building materials. Their working principle involves a motor driving the drum to rotate, allowing the material to come into full contact with the hot airflow on the inner wall of the drum, thus achieving moisture evaporation and material drying. Due to their advantages such as large processing capacity, strong adaptability, and stable operation, rotary drum dryers occupy an important position in industrial production.

[0003] However, in long-term practical applications, rotary drum dryers are prone to material adhesion, clumping, and accumulation on the inner wall surface of the drum when processing high-humidity, high-viscosity materials (such as clay, slurry, coal slime, and chemical filter cake). As operating time increases, the adhesion layer gradually thickens, forming annular or localized blockage layers, and in severe cases, even blocking the entire drum cross-section. This blockage not only reduces the effective volume of the dryer and significantly decreases drying efficiency, but also increases the drum's rotational resistance, leading to a substantial increase in motor energy consumption. More seriously, blockage can cause localized overheating of the drum, damage to seals, and abnormal wear of the rollers and bearings, ultimately triggering equipment failures or even shutdowns, resulting in significant maintenance costs and production losses for enterprises.

[0004] To address the material blockage problem in rotary drum dryers, existing technologies have proposed several anti-blocking devices, such as scrapers, chains, and lifting plates installed on the inner wall of the drum, attempting to remove adhering material mechanically. However, these devices generally suffer from the following shortcomings: First, they are complex in structure, with numerous parts, making manufacturing and assembly difficult; second, installation and maintenance are inconvenient, especially in large rotary drum dryers where internal space is limited, requiring shutdown and personnel access during maintenance, which is time-consuming and labor-intensive; third, the anti-blocking effect is not ideal, as fixed scrapers are prone to rigid collisions with the drum, causing wear or jamming, while chain structures are prone to entanglement and breakage, resulting in low reliability. Furthermore, some anti-blocking devices are not adaptable to different specifications of rotary drum dryers, exhibiting poor versatility. Utility Model Content

[0005] To address the problem that existing rotary drum dryers are prone to material blockage due to adhesion and buildup on the inner wall of the drum when processing high-moisture and high-viscosity materials, and that existing anti-blocking devices suffer from complex structures, inconvenient installation and maintenance, poor anti-blocking effect, and low reliability, this application provides a rotary drum dryer with anti-blocking function. The specific technical solution is as follows:

[0006] A drum dryer with anti-clogging function includes a rotatable drum, the drum having a feed end and a discharge end, and a plurality of guide plates, a dispersing device and a lifting device being arranged sequentially on the inner side of the drum from the feed end to the discharge end, and at least one anti-clogging device being fixedly arranged near the inner side of the discharge end.

[0007] The anti-clogging device includes a conical anti-clogging liner, several lifting lugs, and steel wire ropes. The conical anti-clogging liner is coaxially arranged with the drum, and the tip of the conical anti-clogging liner faces the feed end. The outer wall of the conical anti-clogging liner is connected to the inner wall of the drum by several steel wire ropes. Several lifting lugs are fixedly arranged on the inner wall of the drum. One end of the steel wire rope passes through the center hole of the corresponding lifting lug and is fixed by a rope clamp, and the other end is fixedly connected to the outer wall of the conical anti-clogging liner.

[0008] By setting a conical anti-clogging liner and flexibly connecting it to the inner wall of the drum with steel wire ropes and lifting lugs, and in conjunction with the sequential arrangement of the guide plate, the dispersing device, and the lifting device, wet materials can be effectively guided to move smoothly towards the discharge end, preventing material from accumulating and clogging at the discharge end; the flexible connection of the steel wire rope can buffer the impact of the material, avoid rigid damage to the liner, and facilitate adjustment and replacement.

[0009] Furthermore, the conical anti-clogging liner includes a tip liner and an annular plate, the tip liner and the annular plate being fixed together by a connector; the tip liner is symmetrically divided into two halves along the axis of the conical anti-clogging liner, the annular plate is divided into three fan-shaped segments at equal intervals along the circumferential direction, and the dividing sections between the tip liner and the annular plate are fixed together by the connector.

[0010] Furthermore, a connection hole is provided at the connection point between the tip liner or the annular plate and the wire rope. A first fixing chain is fixedly provided at the edge of the connection hole on the outer side of the tip liner or the annular plate, and a second fixing chain is fixedly provided at the inner edge. The wire rope passes through the first fixing chain, the connection hole and the second fixing chain in sequence, then returns from the second fixing chain and passes through the first fixing chain and is fixed by a rope clamp.

[0011] Furthermore, the included angle of the inner side of the tip liner is 90~110°.

[0012] Furthermore, the number of steel wire ropes is 4 to 12.

[0013] Furthermore, the maximum outer diameter of the conical anti-blocking liner is 3000~4000mm.

[0014] Furthermore, the conical anti-clogging liner is made of steel plate with a thickness of 5-8mm; the lifting lug is fixed to the inside of the roller by welding.

[0015] Furthermore, the diameter of the central hole of the lifting lug is 45~55mm.

[0016] Furthermore, the scattering device includes a plurality of scattering plates, which are fixedly disposed at equal intervals on the inner wall of the roller via connecting ears, and the scattering plates are hinged to the connecting ears.

[0017] Furthermore, the lifting device includes a plurality of lifting plates equidistantly arranged on the inner wall of the drum and a chain-type cleaner. The lifting plates have an arc-shaped structure, and the arc axis of the arc-shaped lifting plates is parallel to the axial center line of the drum. The chain-type cleaner is fixedly arranged in the middle of the inner wall of the drum between a plurality of adjacent lifting plates.

[0018] The beneficial effects of this utility model's technical solution are as follows:

[0019] (1) This utility model sets a conical anti-blocking liner with its tip facing the feed end and coaxial with the drum. When the drum rotates, the flexible steel wire rope drives the liner to generate a slight swing and vibration, continuously scraping off the wet material adhering to the inner wall of the discharge end. At the same time, the hinged cladding plate actively breaks up the material clumps, and the chain cleaner claps the drum wall between the lifting plates, forming a full-process anti-blocking synergy from the feed end to the discharge end, effectively preventing material accumulation and blockage.

[0020] (2) The conical anti-blocking liner is divided into two symmetrical tip liners and three fan-shaped annular plates. The modular design reduces the difficulty of transporting and hoisting large liners. On-site assembly only requires bolt connection, without complex welding. Each component can be disassembled and replaced independently, reducing maintenance costs and downtime. In addition, the limited inner angle of the tip liner avoids material squeezing and wear caused by excessively sharp tips, and also prevents material slippage and accumulation caused by excessive flatness.

[0021] (3) The flexible connection between the wire rope and the lifting lug can effectively buffer the impact of materials and avoid rigid damage to the liner. The wire rope is wound around the inner and outer double ring chains and fixed with rope clamps to form a self-locking effect. Even if the rope clamps are slightly loose, they are not easy to slip off. The connection is highly stable and suitable for industrial environments with high vibration and high impact. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is a schematic diagram of the internal structure of a drum dryer with anti-clogging function according to this utility model;

[0024] Figure 2 This is a schematic diagram of the installation of an anti-clogging device for a drum dryer with anti-clogging function according to this utility model;

[0025] Figure 3 This is a front view of an anti-clogging device for a drum dryer with anti-clogging function according to this utility model;

[0026] Figure 4 yes Figure 1 Cross-sectional view at point AA;

[0027] Figure 5 yes Figure 1 Cross-sectional view at point BB;

[0028] Figure 6 yes Figure 5 An enlarged schematic diagram of the chain sweeper in the image;

[0029] In the diagram, 1 is a drum; 2 is an anti-blocking device; 21 is a conical anti-blocking liner; 211 is a pointed liner; 212 is an annular plate; 213 is a connector; 22 is a lifting lug; 23 is a wire rope; 3 is a guide plate; 4 is a dispersing device; 41 is a dispersing plate; 5 is a lifting device; 51 is a lifting plate; and 52 is a chain sweeper. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] This implementation method effectively solves the problems of easy clogging and difficult maintenance at the discharge end of the rotary drum dryer by using segmented conical liners, flexible steel wire rope connections, wear-resistant materials, and adjustable installation parameters. The specific implementation method is as follows:

[0032] Reference Figures 1-6As shown, a drum dryer with anti-clogging function includes a rotatable drum 1. The drum 1 includes a feeding end and a discharging end. A plurality of guide plates 3, a dispersing device 4 and a lifting device 5 are arranged sequentially on the inner side of the drum 1 from the feeding end to the discharging end. At least one anti-clogging device 2 is fixedly arranged near the inner side of the discharging end. The plurality of anti-clogging devices 2 are spaced apart along the axial direction of the drum 1.

[0033] The anti-blocking device 2 includes a conical anti-blocking liner 21, several lifting lugs 22, and steel wire ropes 23. The conical anti-blocking liner 21 is coaxially arranged with the drum 1, and the tip of the conical anti-blocking liner 21 faces the feed end. The outer wall of the conical anti-blocking liner 21 is connected to the inner wall of the drum 1 by several steel wire ropes 23. Several lifting lugs 22 are fixedly arranged on the inner wall of the drum 1. One end of the steel wire rope 23 passes through the center hole of the corresponding lifting lug 22 and is fixed by a rope clamp, and the other end is fixedly connected to the outer wall of the conical anti-blocking liner 21.

[0034] Because the incoming material is highly viscous, it will gradually clump together inside the drum, forming large pieces that block the outlet. The main function of the anti-blocking device 2 is to prevent large pieces of material from passing through, allowing the material to be repeatedly thrashed and broken into smaller pieces before being discharged. By setting a conical anti-blocking liner 21 with its tip facing the inlet end and flexibly connecting it to the inner wall of the drum 1 with a steel wire rope 23 and a lifting lug 22, and in conjunction with the sequential arrangement of the guide plate 3, the dispersing device 4, and the lifting device 5, the wet material can be effectively guided to move smoothly towards the outlet end, preventing the material from accumulating and blocking at the outlet end. The conical anti-blocking liner 21 is flexibly connected to the inner wall of the drum 1 with a steel wire rope 23, which can buffer the impact of the material, avoid rigid damage to the liner, and facilitate adjustment and replacement.

[0035] In a preferred embodiment, the conical anti-clogging liner 21 includes a tip liner 211 and an annular plate 212. The tip liner 211 and the annular plate 212 are fixed together by a connector 213. The tip liner 211 is symmetrically divided into two halves along the axis of the conical anti-clogging liner 21, and the annular plate 212 is divided into three fan-shaped segments at equal intervals along the circumferential direction. The dividing sections of the tip liner 211 and the annular plate 212 are fixed together by a connector 213.

[0036] Here, the conical anti-blocking liner 21 is divided into two symmetrical pointed liner plates 211 and three fan-shaped conical annular plates 212. It adopts a split structure and is fixed by connecting parts 213, which facilitates manufacturing, transportation and on-site installation. Each section can be disassembled and replaced independently, which reduces maintenance costs and difficulty and improves maintenance convenience.

[0037] In a preferred embodiment, a connecting hole is provided on the tip liner 211 or the annular plate 212 at the connection point with the wire rope. A first fixing chain is fixedly installed at the edge of the connecting hole on the outer side of the tip liner 211 or the annular plate 212, and a second fixing chain is fixedly installed at the inner edge. The wire rope 23 passes through the first fixing chain, the connecting hole and the second fixing chain in sequence, then returns from the second fixing chain and passes through the first fixing chain and is fixed by the rope clamp.

[0038] Here, the first and second fixed link chains are structured like ring steel chains or rings. The wire rope passes through the inner and outer links, increasing friction and providing a secure path. Even if the rope clamps loosen, slippage is unlikely, ensuring a stable connection between the conical anti-clogging liner and the inner wall of the drum. The meandering winding creates an additional flexible section that effectively absorbs vibration and impact. Furthermore, the rope clamp fixing eliminates the need for welding, facilitating disassembly and replacement, and optimizing maintenance efficiency in conjunction with the segmented liner structure. The multiple wrapping elements create a self-locking effect, making it suitable for high-vibration, high-impact, and high-humidity drum dryer environments, ensuring long-term stable operation.

[0039] In a preferred embodiment, the included angle of the inner side of the tip liner 211 is 90~110°.

[0040] Here, the limited angle range of the tip liner 211 ensures smooth material feeding, efficient anti-clogging, and robust structure. It avoids material compression or excessive wear caused by an overly sharp tip, and also prevents material slippage and accumulation caused by an overly flat tip, effectively reducing blockage at the discharge end, while ensuring that the liner has sufficient rigidity.

[0041] In a preferred embodiment, the number of wire ropes 23 is 4 to 12, and the wire ropes 23 are single-strand wire ropes with a diameter of Φ12.

[0042] Here, the number of steel wire ropes 23 is limited to 4 to 12. During installation, their evenly spaced arrangement ensures both the connection strength and uniform stress distribution between the conical anti-blocking liner 21 and the inner wall of the drum 1. This also prevents too many steel wire ropes 23 from obstructing material flow or too few from causing unstable connections, achieving a balance between reliability and flowability. Furthermore, using Φ12 single-strand steel wire ropes 23 provides good flexibility, facilitating their passage through the lifting lugs 22 and fixation via rope clamps. Simultaneously, it possesses sufficient tensile strength to withstand material impact and dynamic loads during drum 1 rotation, ensuring connection safety.

[0043] In one preferred embodiment, the outer diameter of the conical anti-blocking liner 21 is 3000~4000mm.

[0044] Here, the maximum outer diameter of the conical anti-clogging liner 21 is set to 3000~4000mm, which can adapt to the cross-sectional size of the discharge end of the large drum dryer 1. It can completely cover the inner wall of the discharge end, prevent wet materials from leaking through the edge of the liner and causing local blockage, and ensure that the anti-clogging and drainage effects are comprehensive and effective.

[0045] As a preferred embodiment, the conical anti-blocking liner 21 is made of 16Mn steel plate with a thickness of 5~8mm; the lifting lug 22 is fixed to the inner side of the roller 1 by welding.

[0046] Here, the conical anti-blocking liner 21 is made of 16Mn steel plate with a thickness of 5~8mm, which has good strength, wear resistance and moderate weight. The lifting lug 22 is made of Q235-A material and is welded and fixed. While ensuring performance, it is low in cost, reliable in connection and durable and economical in overall structure.

[0047] In one preferred embodiment, the diameter of the central hole of the lifting lug 22 is 45~55mm.

[0048] Here, the diameter of the center hole of the lifting lug 22 is set to 45~55mm, which can match the Φ12 steel wire rope 23, ensuring that the steel wire rope 23 can pass through smoothly and leaving space for rope clamping.

[0049] In a preferred embodiment, the scattering device 4 includes a plurality of scattering plates 41, which are fixedly disposed at equal intervals on the inner wall of the roller 1 via connecting ears, and the scattering plates 41 are hinged to the connecting ears.

[0050] Here, the dispersing device 4 plays the role of breaking up and dispersing the incoming large pieces of material. The dispersing plate 41 is hinged to the inner wall of the drum 1 through the connecting lug. When the drum 1 rotates, the dispersing plate 41 can swing, which enhances the dispersing effect on wet material clumps, avoids material jamming or accumulation caused by the fixed structure, and improves the dispersing efficiency.

[0051] In a preferred embodiment, the lifting device 5 includes a plurality of lifting plates 51 equidistantly arranged on the inner wall of the drum 1 and a chain cleaner 52. The lifting plates 51 have an arc-shaped structure, and the arc axis of the arc-shaped lifting plate 51 is parallel to the axial center line of the drum 1. The chain cleaner 52 is fixedly arranged in the middle of the inner wall of the drum 1 between a plurality of adjacent lifting plates 51.

[0052] Here, the lifting device 5 picks up the small pieces of material that have been crushed as the inner wall of the drum 1 rotates, lifting them to the top of the drum body and then dropping them. It also serves to shake and lift the material. The arc-shaped lifting plate 51, with its axis parallel to the axis of the drum 1, can lift and disperse the material more efficiently, increasing the contact area between the material and the hot air. The chain cleaner 52 is placed between the adjacent lifting plates 51. It can beat the drum wall as the drum 1 rotates, preventing wet material from adhering to the inner wall, while also assisting in lifting the material and improving the uniformity of drying.

[0053] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A drum dryer with anti-clogging function, characterized in that, It includes a rotatable drum (1), the drum (1) includes a feed end and a discharge end, and a plurality of guide plates (3), a scattering device (4) and a lifting device (5) are arranged sequentially on the inner side of the drum (1) from the feed end to the discharge end, and at least one anti-blocking device (2) is fixedly arranged near the inner side of the discharge end. The anti-blocking device (2) includes a conical anti-blocking liner (21), a number of lifting lugs (22) and a steel wire rope (23). The conical anti-blocking liner (21) is coaxially arranged with the drum (1), and the tip of the conical anti-blocking liner (21) faces the feed end. The outer wall of the conical anti-blocking liner (21) is connected to the inner wall of the drum (1) by a number of steel wire ropes (23). A number of lifting lugs (22) are fixedly arranged on the inner wall of the drum (1). One end of the steel wire rope (23) passes through the center hole of the lifting lug (22) and is fixed by a rope clamp. The other end is fixedly connected to the conical anti-blocking liner (21).

2. The drum dryer with anti-clogging function according to claim 1, characterized in that, The conical anti-clogging liner (21) includes a tip liner (211) and an annular plate (212). The tip liner (211) and the annular plate (212) are fixed together by a connector (213). The tip liner (211) is symmetrically divided into two halves along the axis of the conical anti-clogging liner (21). The annular plate (212) is divided into three fan-shaped segments at equal intervals along the circumferential direction. The dividing sections of the tip liner (211) and the annular plate (212) are fixed together by the connector (213).

3. The drum dryer with anti-clogging function according to claim 2, characterized in that, A connection hole is provided at the connection point between the tip liner (211) or the annular plate (212) and the wire rope. A first fixing chain is fixedly provided at the edge of the connection hole on the outside of the tip liner (211) or the annular plate (212), and a second fixing chain is fixedly provided at the edge on the inside. The wire rope (23) passes through the first fixing chain, the connection hole and the second fixing chain in sequence, then returns from the second fixing chain and passes through the first fixing chain and is fixed by the rope clamp.

4. The drum dryer with anti-clogging function according to claim 2, characterized in that, The included angle on the inner side of the tip liner (211) is 90~110°.

5. The drum dryer with anti-clogging function according to claim 1, characterized in that, The number of steel wire ropes (23) is 4 to 12.

6. The drum dryer with anti-clogging function according to claim 1, characterized in that, The maximum outer diameter of the conical anti-blocking liner (21) is 3000~4000mm.

7. The drum dryer with anti-clogging function according to claim 1, characterized in that, The conical anti-blocking liner (21) is made of steel plate with a thickness of 5~8mm; the lifting lug (22) is fixed to the inside of the roller (1) by welding.

8. The drum dryer with anti-clogging function according to claim 1, characterized in that, The diameter of the central hole of the lug (22) is 45~55mm.

9. The drum dryer with anti-clogging function according to claim 1, characterized in that, The scattering device (4) includes several scattering plates (41), which are fixedly arranged on the inner wall of the roller (1) at equal intervals by connecting ears, and the scattering plates (41) are hinged to the connecting ears.

10. The drum dryer with anti-clogging function according to claim 1, characterized in that, The lifting device (5) includes a plurality of lifting plates (51) equidistantly arranged on the inner wall of the drum (1) and a chain cleaner (52). The lifting plates (51) have an arc-shaped structure, and the arc axis of the lifting plates (51) is parallel to the axial center line of the drum (1). The chain cleaner (52) is fixedly arranged in the middle of the inner wall of the drum (1) between a plurality of adjacent lifting plates (51).

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