Rotary drum dryer

Abstract

The invention discloses a rotary drum dryer, and relates to the technical field of dryer equipment. The rotary drum dryer comprises a drum body, a plurality of discharging hoppers and a plurality of adjusting assemblies are arranged on the drum body, and the adjusting assemblies are connected with the material taking plate and used for adjusting the angle of the material taking plate; the device further comprises a driving mechanism, the driving mechanism comprises a tensioner, the tensioner comprises a top plate, a base, a telescopic cylinder and an auxiliary chain wheel, the auxiliary chain wheel is connected with the top plate, an elastic part is arranged between the top plate and the base, and the telescopic cylinder is connected with the base and the elastic part. The angle of the material taking plate can be flexibly adjusted through the adjusting assembly, so that the discharging amount is controlled by adjusting the depth of the discharging hopper, operation is easy, and the product quality can be effectively improved. Appropriate tensioning force can be provided for the chain through the tensioner, the elastic piece can automatically adjust the tensioning force of the auxiliary chain wheel by means of the resilience characteristic of the elastic piece, and the stability of a transmission system is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, and more particularly to a rotary drum dryer. Background Technology

[0002] Rotary drum dryers are key equipment for material drying. Their operational stability and flexibility directly affect production efficiency, quality uniformity, and cost control, playing a vital role in the production of products such as carbon black. However, currently widely used rotary drum dryers face several problems in actual production: First, in the production of products like carbon black, different batches exhibit variations in moisture content and particle size, leading to changes in discharge speed requirements. The hopper in the rotary drum dryer, as the core component for material conveying and discharge, currently cannot flexibly adjust its installation position and depth according to production needs, making it difficult for users to precisely control the discharge volume by adjusting the hopper depth. Second, in the drive mechanism of the rotary drum dryer, the motor typically drives the drum via chain transmission. To ensure the stability of the chain transmission, a sprocket rubber spring tensioner is commonly used to provide tension. However, its tension adjustment range is limited and often insufficient, easily leading to chain loosening, tooth skipping, and other problems, affecting transmission efficiency and the stability of the drum's rotation speed. Summary of the Invention

[0003] To address the problems of existing rotary drum dryers, such as the inability to flexibly adjust the discharge speed according to production needs and the inability to guarantee stable rotation of the drum, this invention provides a rotary drum dryer.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rotary drum dryer includes a drum body with several discharge hoppers inside. A receiving plate is rotatably connected to each discharge hopper. Several adjusting components are disposed outside the drum body, passing through end plates of the drum body and connected to the receiving plates to adjust the angle of the receiving plates relative to the discharge hoppers. The dryer also includes a drive mechanism comprising a motor and a chain, the motor being connected to the drum body via the chain. A tensioner is provided, comprising a top plate, a base, a telescopic cylinder, and an auxiliary sprocket. The auxiliary sprocket is disposed on the top plate and connected to the chain. The top plate is rotatably connected to the base, and an elastic portion is provided between the top plate and the base. One side of the telescopic cylinder is connected to the base, and the other side is connected to the elastic portion.

[0005] Furthermore, each of the discharge hoppers is circumferentially fixed to the inner wall of the cylinder end plate, and the openings of each discharge hopper are arranged along the rotation direction of the cylinder.

[0006] Furthermore, the discharge hopper includes an arc-shaped tube and a pair of support plates. The two support plates are arranged along the axial direction of the cylinder and are fixedly connected to the end plate. The material receiving plate and the arc-shaped tube are located between the two support plates. One side of the arc-shaped tube's inner end opening extends outward to form an arc-shaped plate. One end of the material receiving plate is located on the arc-shaped plate and is rotatably connected to the support plate via a rotating shaft.

[0007] Furthermore, the adjusting assembly includes a sealing plate, one side of which is fixedly connected to the rotating shaft, and the other side of which is fixedly connected to a hopper pin. Corresponding arc-shaped grooves are formed on the end plate and the support plate. The hopper pin is disposed within the arc-shaped groove and fixedly connected to the center of the material-collecting plate. A hopper sliding plate is fixedly connected to the inner end of the hopper pin, and a hopper guide rail plate is fixedly connected to the inner side of the support plate. One side of the hopper sliding plate and one side of the hopper guide rail plate are both arc-shaped. The hopper sliding plate is disposed on the hopper guide rail plate and can move along the hopper guide rail plate.

[0008] Furthermore, the adjustment assembly also includes a rocker arm and a fixing frame. The fixing frame includes a fixing plate, and both sides of the fixing plate are fixedly connected to the outer wall of the end plate via support rods. The fixing plate has several fixing holes arranged in an arc shape. The rocker arm is L-shaped and rotatably connected to the fixing plate through the fixing holes. The end of the rocker arm can contact the sealing plate.

[0009] Furthermore, the arc formed between each of the fixing holes and the arc formed by the arc groove are concentric. Several sealing pressure plates are detachably connected to the outer wall of the end plate, and the sealing pressure plates are arranged along an arc, with the arc formed between each sealing pressure plate and the arc formed by the arc groove being concentric.

[0010] Furthermore, a discharge box is fixedly connected to the outer wall of the end plate, and the opening at the outer end of the arc-shaped tube communicates with the discharge box. The discharge box includes a discharge cylinder and a feed cylinder. The discharge cylinder includes a first cylinder section and a second cylinder section. One side of the first cylinder section is fixedly connected to the end plate, and the other side is fixedly connected to the second cylinder section. The feed cylinder covers the second cylinder section and is rotatably connected to the second cylinder section. A discharge port is opened at the bottom of the feed cylinder.

[0011] Furthermore, several spiral blades are fixedly connected to the inner wall of the first cylindrical section, and several through discharge holes are opened on the second cylindrical section.

[0012] Furthermore, both the top plate and the base are U-shaped, and a square connecting shaft is fixedly connected to the top plate, with no relative rotation between the top plate and the connecting shaft. Both ends of the connecting shaft extend outward to form round shafts, and are rotatably connected to the base through the round shafts.

[0013] Furthermore, the elastic part is fixedly connected to the telescopic rod of the telescopic cylinder. The elastic part includes a square sleeve and several elastic elements. The sleeve is sleeved on the connecting shaft, and each of the elastic elements is disposed between the sleeve and the connecting shaft. Each of the elastic elements has a right-angled triangular cross-section, is positioned at a corner within the sleeve, and has one side in contact with the connecting shaft.

[0014] The beneficial effects of this invention are as follows: This invention allows for flexible adjustment of the angle of the feeding plate according to production needs via an adjusting component. This, in turn, allows for precise control of the discharge volume by adjusting the depth of the discharge hopper. Furthermore, the adjusting component is located outside the cylinder, facilitating user adjustment of the feeding plate angle. The operation is simple and effectively improves the quality of the discharged products. This invention also provides appropriate tension to the chain via a tensioner. The elastic element, utilizing its self-rebound characteristic, maintains the chain tension and automatically adjusts the tension of the auxiliary sprocket, preventing slippage, tooth skipping, chain derailment, and loosening of the auxiliary sprocket, thus ensuring the stability of the transmission system. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the structural principle of one embodiment of the present invention.

[0016] Figure 2 As shown Figure 1 The right view.

[0017] Figure 3 As shown Figure 2 A side view of the cross section at point A in the middle.

[0018] Figure 4 As shown Figure 2 Cross-sectional view at point B in the middle.

[0019] Figure 5 for Figure 1 The partial structural diagram shows the structure of the discharge hopper.

[0020] Figure 6 As shown Figure 5 A side view.

[0021] Figure 7 for Figure 1 The partial structural diagram shows the structure of the regulating component.

[0022] Figure 8 As shown Figure 7 A side view.

[0023] Figure 9 for Figure 1 The partial structural diagram shows the structure of the tensioner.

[0024] Figure 10 As shown Figure 9 The front view.

[0025] Figure 11 As shown Figure 10 Cross-sectional view at point C.

[0026] Explanation of reference numerals in the attached drawings: 1. Cylinder body; 2. Feed box; 3. Exhaust gas outlet pipe; 4. Feed pipe; 5. Discharge cylinder; 6. Discharge port; 7. Air inlet pipe; 8. Motor; 9. Chain; 10. Connecting plate; 11. First cylinder section; 12. Second cylinder section; 13. Rear end plate; 14. Arc groove; 15. Support plate; 16. Arc tube; 17. Material receiving plate; 18. Hopper slide plate; 19. Hopper guide rail plate; 20. Rotating shaft; 21. Hopper pin; 22. Sealing plate; 23. Fixing frame; 24. Rocker arm; 25. Sealing pressure plate; 26. Top plate; 27. Base; 28. Support arm; 29. ​​Auxiliary sprocket; 30. Telescopic cylinder; 31. Sleeve; 32. Connecting shaft; 33. Elastic element. Detailed Implementation

[0027] This invention discloses a rotary drum dryer. The following describes one embodiment of the invention in detail with reference to the accompanying drawings.

[0028] Combination Figure 1 , Figure 2 as well as Figure 3As shown, a rotary drum dryer includes a drum body 1 and a drive mechanism. A feed box is provided on the front end plate of the drum body 1, and a discharge box is provided on the rear end plate 13. The feed box includes a feed cylinder, a feed pipe 4, and an exhaust gas outlet pipe 3. The feed cylinder is rotatably connected to the front end plate, and a sliding seal is provided between the feed cylinder and the front end plate. The edge of the feed cylinder opening extends into the internal space of the drum body 1 and communicates with the internal space of the drum body 1. A funnel-shaped connecting plate 10 is provided inside the drum body 1. One end of the connecting plate 10 is fixedly connected to the front end plate, and the other end is fixedly connected to the inner wall of the drum body 1. The feed pipe 4 extends obliquely from the outside into the feed cylinder and the drum body 1, and the end of the feed pipe 4 opening is located above the connecting plate 10. A discharge box is fixedly connected to the outer wall of the rear end plate 13. The discharge box includes a discharge cylinder and a feed cylinder 5. The discharge cylinder includes a first cylinder section 11 and a second cylinder section 12. The front side of the first cylinder section 11 is fixedly connected to the end plate, and the rear side is fixedly connected to the second cylinder section 12. Several spiral blades are fixedly connected to the inner wall of the first cylinder section 11, and the first cylinder section 11 uses the spiral blades to convey materials backward. Several through discharge holes are opened on the inner wall of the second cylinder section 12, and an air inlet pipe 7 is connected to the second cylinder section 12. The feed cylinder 5 covers the second cylinder section 12, and a discharge port 6 is opened at the bottom of the feed cylinder 5.

[0029] Combination Figure 4 , Figure 5 as well as Figure 6 As shown, a plurality of discharge hoppers are provided inside the cylinder 1. Each discharge hopper is arranged circumferentially on the rear end plate 13, and the opening of each discharge hopper faces the rotation direction of the cylinder 1. Each discharge hopper includes an arc-shaped section and a pair of support plates 15. The two support plates 15 are arranged axially along the cylinder 1, and the support plate 15 located on the rear side is fixedly connected to the inner wall of the rear end plate 13. An arc-shaped tube 16 is located between the two support plates 15 and is fixedly connected to them. One side of the inner end opening of the arc-shaped tube 16 extends radially outward along the cylinder 1 to form an arc-shaped plate. A material-receiving plate 17 is provided between the two support plates 15. One end of the material-receiving plate 17 is located on the arc-shaped plate and is rotatably connected to the support plates 15 and the rear end plate 13 via a rotating shaft 20. The other end of the material-receiving plate 17 protrudes from the support plates 15. The outer end opening of the arc-shaped tube 16 communicates with the discharge box.

[0030] Combination Figure 7 and Figure 8As shown, an adjustment assembly is provided on the outer wall of the rear end plate 13. The adjustment assembly includes a sealing plate 22, a rocker arm 24, and a fixing frame 23. The sealing plate 22 is fan-shaped, and one side of the sealing plate 22 is fixedly connected to a rotating shaft 20 passing through the support plate 15 and the rear end plate 13. Corresponding arc-shaped grooves 14 are provided on the rear end plate 13 and the two support plates 15. The other side of the sealing plate 22 is fixedly connected to the outer end of the hopper pin 21. The hopper pin 21 is arranged in the arc-shaped groove 14 and fixedly connected to the outer middle of the material picking plate 17 to prevent the material picking plate 17 from being blocked by the hopper pin 21 when picking up materials. The fixing frame 23 includes an arc-shaped fixing plate with several fixing holes arranged in an arc shape. Both sides of the fixing plate are fixedly connected to the outer wall of the rear end plate 13 through support rods, so that there is a gap between the fixing plate and the outer wall of the rear end plate 13. The rocker arm 24 is L-shaped and rotatably connected to the fixing plate through fixing holes. One end of the rocker arm 24 can contact the sealing plate 22, and the other end of the rocker arm 24 is rotatably connected to a handle. The arcs formed by the fixing holes and the arcs formed by the arc grooves 14 are concentric. Several sealing pressure plates 25 arranged in an arc shape are detachably connected to the outer wall of the rear end plate 13. Each sealing pressure plate 25 is used to fix the sealing plate 22 and prevent the sealing plate 22 from rotating. The arcs formed by the sealing pressure plates 25 and the arcs formed by the arc grooves 14 are concentric. The inner end of the hopper pin 21 is fixedly connected to the hopper slide plate 18, and the inner support plate 15 is provided with a hopper guide rail plate 19. One side of the hopper slide plate 18 and one side of the hopper guide rail plate 19 are both arc-shaped, and the hopper slide plate 18 is arranged on the hopper guide rail plate 19 and moves along the hopper guide rail plate 19.

[0031] Combination Figure 9 , Figure 10 as well as Figure 11As shown, the drive mechanism includes a bracket, a first motor, a second motor, a reducer, a tensioner, and a chain 9. The first motor, the second motor, the reducer, and the tensioner are all mounted on the bracket. The first motor and the second motor are connected to the reducer. The drive shaft of the reducer is connected to an output shaft via a coupling, and both the drive shaft and the output shaft are covered with covers. Both sides of the output shaft are connected to the bracket via bearings with vertical seats. A first sprocket is mounted on the output shaft, and the first sprocket is located between two bearings with vertical seats. A second sprocket is mounted on the cylinder 1, and the first sprocket is connected to the second sprocket via the chain 9. The upper part of the chain 9 is covered with a protective shell to prevent personnel or dust from coming into contact with the chain 9. The tensioner includes a top plate 26, a base 27, a telescopic cylinder 30, an auxiliary sprocket 29, and an elastic part. A pair of support arms 28 are fixedly connected to the top of the top plate 26, with a gap between the two support arms 28, and one end of each support arm 28 extends out of the top plate 26. The auxiliary sprocket 29 is rotatably connected to the support arm 28, and the top of the auxiliary sprocket 29 is connected to the chain 9. The top plate 26 and the base 27 are both U-shaped. A square connecting shaft 32 is fixedly connected between the two side walls of the top plate 26, and there is no relative rotation between the top plate 26 and the connecting shaft 32. Both ends of the connecting shaft 32 extend outward to form round shafts, which are rotatably connected to the two side walls of the base 27 to achieve a rotatable connection between the top plate 26 and the base 27. The elastic part includes a square sleeve 31 and several elastic elements 33. The sleeve 31 is fitted onto the connecting shaft 32, and each elastic element 33 is located between the sleeve 31 and the connecting shaft 32. Each elastic element 33 has a right-angled triangular cross-section and is positioned at a corner within the sleeve 31. One side of each elastic element 33 contacts the side wall of the connecting shaft 32. The cylinder of the telescopic cylinder 30 is rotatably connected to the base 27, and the other side is rotatably connected to the elastic part.

[0032] In use, the first and second motors in the drive mechanism provide power, driving the cylinder 1 to rotate clockwise via the chain 9. When the user needs to increase the tension of the chain 9, the telescopic rod of the telescopic cylinder 30 retracts, causing the elastic part and the top plate 26 to rotate. By increasing the angle between the top plate 26 and the base 27, the tension of the chain 9 is increased. Then, the user tightens the bolts at the end of the round shaft to prevent relative rotation between the top plate 26 and the base 27, and tightens the bolts on the telescopic cylinder 30 to prevent relative movement between the telescopic rod and the cylinder, thus providing appropriate preload. During transmission, the connecting shaft 32 may rotate relative to the sleeve 31. Several elastic elements 33 located between the sleeve 31 and the connecting shaft 32 utilize their automatic rebound characteristics to maintain the tension of the chain 9, automatically adjusting the tension of the auxiliary sprocket 29, preventing slippage, tooth skipping, chain derailment, and loosening of the auxiliary sprocket 29, and ensuring the stability of the transmission system. When the user needs to reduce the tension of chain 9, first loosen the bolts at the end of the shaft to allow relative rotation between the top plate 26 and the base 27. Then loosen the bolts on the telescopic cylinder 30, and extend the telescopic rod of the telescopic cylinder 30 to rotate the elastic part and the top plate 26. By reducing the angle between the top plate 26 and the base 27, the tension of chain 9 is reduced. After adjustment, the bolts at the end of the shaft and on the telescopic cylinder 30 need to be tightened again.

[0033] The other end of the receiving plate 17 protrudes beyond the receiving plate 17, allowing it to dig material into the discharge hopper during the rotation of the cylinder 1. One end of the receiving plate 17 is located on the arc-shaped plate, preventing material from flowing out through the gap between the receiving plate 17 and the arc-shaped plate. Furthermore, as the cylinder 1 rotates, the material can enter the arc-shaped tube 16 along the arc-shaped plate and then enter the discharge box along the arc-shaped tube 16. The first cylinder section 11 rotates synchronously with the cylinder 1, using several spiral blades located on its inner wall to transport the material to the second cylinder section 12. The discharge cylinder 5 is mounted on the second cylinder section 12 and is fixed relative to the second cylinder section 12, so that material entering the second cylinder section 12 can pass through the discharge hole into the discharge cylinder 5 and be discharged from the discharge port 6 of the discharge cylinder 5.

[0034] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A drum dryer, characterized by: The device comprises a cylinder (1), a plurality of discharge hoppers are arranged in the cylinder (1), and a material taking plate (17) is rotatably connected in the discharge hoppers; a plurality of adjusting assemblies are arranged outside the cylinder (1), the adjusting assemblies pass through end plates of the cylinder (1) to be connected with the material taking plate (17), and are used for adjusting an angle of the material taking plate (17) relative to the discharge hoppers; A driving mechanism is further arranged, the driving mechanism comprises a motor (8) and a chain (9), the motor (8) is connected with the cylinder (1) through the chain (9), a tensioner is arranged, the tensioner comprises a top plate (26), a base (27), a telescopic cylinder (30) and an auxiliary sprocket (29), the auxiliary sprocket (29) is arranged on the top plate (26) and connected with the chain (9), the top plate (26) is rotatably connected with the base (27), and an elastic part is arranged between the top plate (26) and the base (27), one side of the telescopic cylinder (30) is connected with the base (27), and the other side is connected with the elastic part.

2. A drum dryer according to claim 1, characterised in that: Each of the discharge hoppers is fixed on an inner wall of the end plate of the cylinder (1) in a circumferential direction, and orientations of openings of the discharge hoppers are arranged along a rotating direction of the cylinder (1).

3. A drum dryer according to claim 1, characterised in that: The discharge hopper comprises an arc-shaped pipe (16) and a pair of support plates (15), the two support plates (15) are arranged along an axial direction of the cylinder (1) and fixedly connected with the end plate; The material taking plate (17) and the arc-shaped pipe (16) are located between the two support plates (15), an inner end opening side of the arc-shaped pipe (16) extends outward to form an arc-shaped plate, one end of the material taking plate (17) is located on the arc-shaped plate and rotatably connected with the support plate (15) through a rotating shaft (20).

4. A drum dryer according to claim 3, characterised in that: The adjusting assembly comprises a sealing plate (22), one side of the sealing plate (22) is fixedly connected with the rotating shaft (20), and the other side is fixedly connected with a hopper pin shaft (21); The end plate and the support plate (15) are provided with corresponding arc-shaped grooves (14), the hopper pin shaft (21) is arranged in the arc-shaped groove (14) and fixedly connected with a middle part of the material taking plate (17); An inner end of the hopper pin shaft (21) is fixedly connected with a hopper sliding plate (18), an inner side of the support plate (15) is fixedly connected with a hopper guide rail plate (19), one side of the hopper sliding plate (18) and one side of the hopper guide rail plate (19) are both arc-shaped, the hopper sliding plate (18) is arranged on the hopper guide rail plate (19) and can move along the hopper guide rail plate (19).

5. A drum dryer according to claim 4, characterised in that: The adjusting assembly further comprises a rocker arm (24) and a fixed frame (23), the fixed frame (23) comprises a fixed plate, two sides of the fixed plate are fixedly connected with outer walls of the end plate through support rods, and a plurality of fixed holes are arranged on the fixed plate and arranged in an arc shape relative to each other; The rocker arm (24) is L-shaped and rotatably connected with the fixed plate through the fixed holes, and an end part of the rocker arm (24) can contact the sealing plate (22).

6. A drum dryer according to claim 5, characterised in that: The arcs formed between each of the fixing holes and the arcs formed by the arc-shaped grooves (14) have the same center; The outer wall of the end plate is detachably connected with a plurality of sealing pressure plates (25), the sealing pressure plates (25) are arranged in an arc shape, and the arcs formed between each of the sealing pressure plates (25) have the same center as the arcs formed by the arc-shaped grooves (14).

7. A drum dryer according to claim 3, characterised in that: The outer wall of the end plate is fixedly connected with a discharge box, and the opening at the outer end of the arc-shaped pipe (16) is in communication with the discharge box. The discharge box comprises a discharge cylinder and a discharging cylinder (5), the discharge cylinder comprises a first cylinder section (11) and a second cylinder section (12), one side of the first cylinder section (11) is fixedly connected with the end plate, the other side is fixedly connected with the second cylinder section (12), the discharging cylinder (5) is arranged on the second cylinder section (12) and is rotatably connected with the second cylinder section (12), and the bottom of the discharging cylinder (5) is provided with a discharge port (6).

8. A drum dryer according to claim 7, characterised in that: The inner wall of the first cylinder section (11) is fixedly connected with a plurality of spiral vanes, and the second cylinder section (12) is provided with a plurality of penetrating discharge holes.

9. A drum dryer according to claim 1, characterised in that: The top plate (26) and the base (27) are both in U shape, the top plate (26) is fixedly connected with a square connecting shaft (32), and the top plate (26) and the connecting shaft (32) are not rotatable relative to each other. Both ends of the connecting shaft (32) extend outward to form a circular shaft, and the circular shaft is rotatably connected with the base (27).

10. A drum dryer according to claim 9, characterised in that: The elastic part is fixedly connected with the telescopic rod of the telescopic cylinder (30), the elastic part comprises a square sleeve (31) and a plurality of elastic members (33), the sleeve (31) is arranged on the connecting shaft (32), and each of the elastic members (33) is arranged between the sleeve (31) and the connecting shaft (32). The cross section of each of the elastic members (33) is a right triangle, the elastic member (33) is arranged at the corner position in the sleeve (31), and one side surface is in contact with the connecting shaft (32).

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