Small wet material roller dryer

Abstract

A small wet material roller dryer comprises a first-stage roller, a second-stage roller and a third-stage roller which are coaxially sleeved and fixed into a whole, a first sealing shell is arranged among one ends of the three rollers, a second sealing shell is arranged at the other ends of the three rollers, a hot air pipe is arranged in the middle of the outer side face of the first sealing shell, and a feeding device is arranged on one side of the hot air pipe. A first sealing shell is arranged in the first-stage roller, a discharging pipe is arranged on the lower portion of the second sealing shell, a smashing shaft is installed in the first-stage roller in the axial direction of the first-stage roller, the smashing shaft is close to the inner side wall of the first-stage roller, the two ends of the smashing shaft are connected into the first sealing shell and the second sealing shell, and a driver for driving the smashing shaft to rotate is installed in the middle of a side plate of the second sealing shell through a support. The crushing shaft of the dryer assists in stirring and raising materials in the primary roller, and the crushing shaft adopts an eccentric structure close to the shifting plate, so that the uniformity of raising the materials can be greatly improved, the problem of non-uniform drying of the materials with higher humidity in the existing primary roller is solved, and the drying quality of the dryer is improved.

Description

Technical Field

[0001] The utility model relates to the field of drying machines, in particular to a small-sized wet material drum drying machine. Background Art

[0002] In the prior art, a multi-stage drum dryer usually uses layers of drums to achieve reciprocating movement of materials inside the dryer for drying, and the purpose of drying is achieved by extending the movement time of the materials.

[0003] The inner wall of the drum is usually equipped with a spiral guide plate and a material shifting plate. The spiral guide plate is used to push the material forward, and the material shifting plate is used to lift the material to fully contact with the hot air. The material continues to move forward under the propulsion of the spiral guide plate to achieve multi-stage drying.

[0004] At present, this type of dryer usually uses a hot air duct to pass hot air into the first-stage drum. The hot air enters the first-stage drum and is dried along the material moving path. There is a problem that the temperature of the hot air drops at the end of the drying process, which affects the drying effect. In addition, the first-stage drum of this multi-stage dryer is small in size. When drying materials with high humidity, the space for the materials in the first-stage drum is limited, and there is a problem that the lifting plate does not lift the materials evenly, which affects the drying quality. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a small wet material drum dryer.

[0006] The technical scheme of the utility model is: a small wet material drum drying machine, comprising a primary drum, a secondary drum and a tertiary drum which are coaxially fixed as one, the primary drum, the secondary drum and the tertiary drum are arranged in sequence from the inside to the outside, the tertiary drum is rotatably mounted on a frame, a sealed shell A is arranged between one end of the three drums, a sealed shell B is arranged at the other end, the sealed shell A and the sealed shell B have material chambers inside, a hot air duct communicating with the inside is arranged in the middle of the outer side surface of the sealed shell A, a feeding device is arranged on one side of the hot air duct, a discharge pipe is arranged at the lower part of the sealed shell B, a crushing shaft is arranged in the primary drum along its axial direction, the crushing shaft is close to the inner side wall of the primary drum, is an eccentrically arranged crushing shaft, both ends of the crushing shaft are connected in the sealed shell A and the sealed shell B, a driver for driving the crushing shaft to rotate is installed in the middle of the side plate of the sealed shell B through a support, and the driver is a reduction motor.

[0007] Preferably, the crushing shaft includes a main shaft and a plurality of tooth plates evenly distributed on the main shaft, the tooth plate is a square plate, and shaft teeth are vertically connected to the outer end of the tooth plate, and the shaft teeth are cylindrical rods.

[0008] Preferably, the hot air duct includes a main pipe body and a branch pipe body, the branch pipe body is connected to the side wall of the main pipe body, the main pipe body corresponds to the middle of the first-level roller, the branch pipe body corresponds to the middle port of the second-level roller, and a gun bracket is provided at the outer port of the main pipe body.

[0009] Preferably, a plurality of V-shaped material stripping plates are evenly distributed on the inner side surface of the primary roller, and a plurality of L-shaped material stripping plates are evenly distributed on the outer side surface of the primary roller, and the overall size of the V-shaped material stripping plates is greater than the overall size of the L-shaped material stripping plates.

[0010] Preferably, the inner side surface and the outer side surface of the secondary roller are both provided with a plurality of L-shaped material-shifting plates at equal intervals along the circumferential direction thereof, and the inner side surface of the tertiary roller is evenly distributed with a plurality of L-shaped material-shifting plates.

[0011] Preferably, the feeding device is a screw feeder, the outlet of the screw feeder extends into the port of the first-stage roller, and a cone bucket is provided at the outer end of the feeding shell of the screw feeder.

[0012] Preferably, tugboats are provided on both sides of the frame, and limiting convex edges are provided on both sides of the tugboats. A reduction motor is provided between the tugboats on both sides, and the reduction motor drives the two tugboats to rotate synchronously through chains and sprockets. The outer side surface of the three-stage drum is provided with a circular track corresponding to the position of the tugboats.

[0013] The beneficial technical effects of the utility model are:

[0014] The hot air duct of the dryer adopts a structure composed of a main pipe and a branch pipe. The main pipe sends the main hot air into the first-stage drum, and the branch pipe sends the hot air into the second-stage drum to supplement the heat, which can effectively reduce the problem of the temperature drop of the hot air in the final drying stage affecting the drying effect. At the same time, a crushing shaft is provided in the first-stage drum to assist in stirring and lifting the material, and the crushing shaft adopts an eccentric structure close to the inner wall of the drum, which can greatly improve the uniformity of the material being lifted, improve the problem of uneven drying of materials with high humidity in the existing first-stage drum, and improve the drying quality of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a main structural schematic diagram of the utility model;

[0017] Figure 3 Place Figure 2 AA section structural diagram;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the crushing shaft.

[0019] In the figure, 11. primary roller, 111. V-shaped material stripping plate, 112. L-shaped material stripping plate, 12. secondary roller, 13. tertiary roller, 14. sealed shell A, 141. main body, 142. branch pipe body, 143. gun bracket, 15. sealed shell B, 151. discharge pipe, 16. frame, 161. tugboat, 162. reduction motor, 163. chain, 164. circular track, 17. crushing shaft, 171. main shaft, 172. tooth plate, 173. shaft teeth, 174. support, 175. driver, 18. screw feeder, 181. outlet of screw feeder. Implementation

[0020] Example 1, see the attached specification Figure 1-4 A small wet material drum dryer comprises a primary drum 11, a secondary drum 12 and a tertiary drum 13 which are coaxially fixed together. The primary drum 11, the secondary drum 12 and the tertiary drum 13 are all provided with spiral blades for pushing the material forward. The tertiary drum 13 is rotatably mounted on a frame 16. A sealed shell A 14 is provided between one end of the three drums, and a sealed shell B 15 is provided at the other end. A hot air pipe is provided in the middle of the outer side of the sealed shell A 14. A feeding device is provided on one side of the hot air pipe. The material is fed into the primary drum 11 through the feeding device. A discharge port is provided at the lower part of the sealed shell B 15. Tube 151, the material flows out from the discharge pipe 151 after multi-stage drying by the first-stage roller 11, the second-stage roller 12 and the third-stage roller 13. A crushing shaft 17 is installed along the axial direction of the first-stage roller 11. The crushing shaft 17 is close to the inner side wall of the first-stage roller 11. The crushing shaft 17 adopts an eccentric structure close to the material-pickup plate, which can greatly improve the uniformity of the material being lifted. The two ends of the crushing shaft 17 are connected to the sealed shell A 14 and the sealed shell B 15. A driver 175 for driving the crushing shaft 17 to rotate is installed in the middle of the side plate of the sealed shell B 15 through a support 174. The driver 175 is a reduction motor.

[0021] The crushing shaft 17 includes a main shaft 171 and a plurality of tooth plates 172 evenly distributed on the main shaft 171. The outer end of the tooth plate 172 is vertically connected with an axis tooth 173. The axis tooth 173 at the outer end of the tooth plate 172 can increase its material picking area and improve the material picking and lifting effect.

[0022] The hot air duct includes a main body 141 and a branch body 142. The main body 141 corresponds to the middle of the first-stage drum 11, and the branch body 142 corresponds to the middle port of the second-stage drum 12. A gun holder 143 is provided at the outer port of the main body 141. The main body 141 delivers the main hot air into the first-stage drum 11, and the branch body 142 delivers the hot air into the second-stage drum 12 to supplement the heat. The air supply is more uniform, which can effectively reduce the problem of the temperature drop of the hot air in the last stage of drying affecting the drying effect.

[0023] The inner side surface of the first-stage roller 11 is evenly distributed with a plurality of V-shaped material stripping plates 111, and the outer side surface of the first-stage roller 11 is evenly distributed with a plurality of L-shaped material stripping plates 112. The inner and outer side surfaces of the second-stage roller 12 are evenly spaced along the circumferential direction thereof. The inner side surface of the third-stage roller 13 is evenly distributed with a plurality of L-shaped material stripping plates 112. Both the V-shaped material stripping plates 111 and the L-shaped material stripping plates 112 are used to lift the material on its traveling path so that it can fully contact with the air, thereby improving the uniformity and drying effect of drying.

[0024] The feeding device is a screw feeder 18 , the outlet 181 of the screw feeder extends into the port of the primary roller 11 , and the material is uniformly transported to the primary roller 11 through the screw feeder 18 .

[0025] Tugwheels 161 are provided on both sides of the frame 16 , and a reduction motor 162 is provided between the tugwheels 161 on both sides. The reduction motor 162 drives the two tugwheels 161 to rotate synchronously through a chain 163 and a sprocket. The outer side surface of the three-stage drum 13 is provided with a circular track 164 corresponding to the position of the tugwheels 161 .

[0026] The working process of the dryer is as follows: the reduction motor 162 drives the tug 161 to rotate through the chain 163, and drives the drum to rotate between the tugs 161 on both sides, and then introduces hot air into the dryer from the hot air pipe. The hot air pipe adopts a structure composed of a main pipe body 141 and a branch pipe body 142. During the process of the main pipe body 141 sending hot air into the primary drum 11, the branch pipe body 142 simultaneously sends hot air into the secondary drum 12 to supplement heat, thereby increasing the drying temperature of the final drying hot air. At the same time, the wet material is sent into the primary drum 11 through the screw feeder 18. The material is dried along the path between the drums at various levels under the action of the spiral blades. In this process, the crushing shaft 17 is driven to rotate to assist in crushing and lifting the material. Combined with the eccentric arrangement of the crushing shaft 17, the uniformity of the material being lifted can be improved, and the material can be fully contacted with the air, thereby improving the drying effect and efficiency.

Claims

1. A small wet material drum dryer, comprising a primary drum, a secondary drum and a tertiary drum which are coaxially fixed together, wherein the tertiary drum is rotatably mounted on a frame, and is characterized by: A sealed shell A is provided between one end of the three rollers, and a sealed shell B is provided at the other end. A hot air pipe is provided in the middle of the outer side surface of the sealed shell A, a feeding device is provided on one side of the hot air pipe, and a discharge pipe is provided at the lower part of the sealed shell B. A crushing shaft is installed along the axial direction of the first-level roller, and the crushing shaft is close to the inner side wall of the first-level roller. Both ends of the crushing shaft are connected in the sealed shell A and the sealed shell B, and a driver for driving the crushing shaft to rotate is installed in the middle of the side plate of the sealed shell B through a support.

2. A small wet material drum dryer according to claim 1, characterized in that: The crushing shaft comprises a main shaft and a plurality of tooth plates evenly distributed on the main shaft, and shaft teeth are vertically connected to the outer ends of the tooth plates.

3. A small wet material drum dryer according to claim 1, characterized in that: The hot air pipe comprises a main pipe body and a branch pipe body, wherein the main pipe body corresponds to the middle of the first-stage roller, and the branch pipe body corresponds to the middle port of the second-stage roller, and a gun bracket is arranged at the outer port of the main pipe body.

4. A small wet material drum dryer according to claim 1, characterized in that: A plurality of V-shaped material shifting plates are evenly distributed on the inner side surface of the first-stage roller, and a plurality of L-shaped material shifting plates are evenly distributed on the outer side surface of the first-stage roller.

5. A small wet material drum dryer according to claim 1, characterized in that: The inner side surface and the outer side surface of the secondary roller are both provided with a plurality of L-shaped material shifting plates at equal intervals along the circumferential direction thereof, and the inner side surface of the tertiary roller is evenly distributed with a plurality of L-shaped material shifting plates.

6. A small wet material drum dryer according to claim 1, characterized in that: The feeding device is a screw feeder, and the outlet of the screw feeder extends into the port of the first-stage roller.

7. A small wet material drum dryer according to claim 1, characterized in that: Tugwheels are arranged on both sides of the frame, and a reduction motor is arranged between the tugwheels on both sides. The reduction motor drives the two tugwheels to rotate synchronously through chains and sprockets, and an annular track corresponding to the position of the tugwheels is arranged on the outer side of the three-stage drum.

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