CN219264904U

CN219264904U - Drying cylinder

Info

Publication number: CN219264904U
Application number: CN202320091032.1U
Authority: CN
Inventors: 方盛楠; 俞玉富; 吴文斌; 刘上月; 梁峻瑜; 黄礼安; 施湘燕; 程德盛; 黎树霖; 李凤远; 王世彬; 梁康; 李婷; 杜松燕; 覃安健; 廖森登; 韩中孝; 石登上
Original assignee: Guangxi Liugang Environmental Protection Co ltd
Current assignee: Guangxi Liugang Environmental Protection Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-06-27
Anticipated expiration: 2033-01-31

Abstract

The embodiment of the utility model provides a drying cylinder, which comprises: a roller; the roller comprises a roller front section and a roller rear section; an inner cylinder which is coaxial with the roller and synchronously rotates with the roller is arranged in the front section of the roller; the wall of the inner cylinder is provided with a plurality of vent holes; the outer wall of the inner cylinder is in clearance fit with the inner wall of the roller; a plurality of lifting blades are arranged on the inner wall of the rear section of the roller.

Description

Drying cylinder

Technical Field

The utility model relates to the field of drying in the iron and steel industry, in particular to a drying cylinder.

Background

In the iron and steel industry, many materials need to be dried, and the types of drying are also relatively large, such as powdery materials, granular materials, pellets and the like, and cylinder dryers are most commonly used. The traditional cylinder dryer is internally provided with the lifting blades, which can play a role in stirring and lifting materials to a certain extent, but have larger defects. For example, the pellet drying efficiency is low, and the pellets are easy to damage when the pellets are driven to roll by the lifting plate.

In carrying out the present utility model, the applicant has found that at least the following problems exist in the prior art:

the pellet drying efficiency of the cylinder dryer is low and the pellet is easy to be damaged.

Disclosure of Invention

The embodiment of the utility model provides a drying cylinder, which is also a drying cylinder with an inner cylinder, and solves the problems that the pellet drying efficiency of a cylinder dryer is low and the pellet is easy to damage.

To achieve the above object, in one aspect, an embodiment of the present utility model provides a drying drum, including: a roller;

the roller comprises a roller front section and a roller rear section;

an inner cylinder which is coaxial with the roller and synchronously rotates with the roller is arranged in the front section of the roller; the wall of the inner cylinder is provided with a plurality of vent holes; the outer wall of the inner cylinder is in clearance fit with the inner wall of the roller;

a plurality of lifting blades are arranged on the inner wall of the rear section of the roller.

Further, at least one wind deflector is arranged between the outer wall of the inner cylinder and the inner wall of the roller.

Further, the at least one wind shield is circumferentially equidistant along the inner wall of the roller, and the top end of the wind shield is in clearance fit with the outer wall of the inner cylinder.

Further, the lifting blades are uniformly distributed on the inner wall of the rear section of the roller.

Further, the lifting blades are L-shaped, and the angle of the bending part of the L-shaped lifting blades is 45-60 degrees.

Further, the lengths of the front section and the rear section of the roller are equal.

Further, the roller is obliquely arranged and has an inclination angle of 3-5 degrees with the horizontal plane.

Further, the drying cylinder further comprises: the feeding end is arranged at the feeding side of the roller, the discharging end is arranged at the discharging side of the roller, and the smoke discharging and dust removing system is arranged at the discharging side of the roller;

a first blanking chute is arranged in the feeding end and is connected with the inner cylinder in the front section of the roller;

the feeding end is also provided with a smoke outlet; the smoke exhaust and dust removal system is connected to the outside of the smoke exhaust port;

a second discharging chute is arranged in the discharging end;

the discharging end is also provided with a heat supply air port;

the second blanking chute is communicated with the heat supply air port.

Further, the drying cylinder further comprises: at least one rolling ring installed along the circumference of the outer wall of the roller, a riding wheel device for bearing the rolling ring and a transmission device arranged below the middle part of the roller and used for driving the roller to rotate.

Further, the transmission device is an adjustable speed transmission device; the adjustable speed transmission device comprises: a ring gear annularly fixed outside the roller, a transmission gear meshed with the ring gear, a speed reducer and a motor; the motor is in driving connection with the speed reducer; the speed reducer is in driving connection with the transmission gear.

The technical scheme has the following beneficial effects: through dividing the roller into a roller front section and a roller rear section, adding an inner barrel aiming at the roller front section, arranging a plurality of vent holes on the inner barrel, arranging a plurality of lifting blades on the roller rear section, through experiments, under the condition of the same heat supply temperature and drying time, the pellets dried by the roller have lower moisture and higher strength, and when the drying time is 120 minutes, the moisture of the pellets can be reduced by 23.8%, the pellet strength can be improved by 35.2%, the drying efficiency is obviously improved, and the breakage of the pellets is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic cross-sectional view of a drum according to one embodiment of the present utility model in an axial direction of a drum;

the reference numerals are expressed as:

1. a roller; 11. a drum front section; 12. a drum rear section; 13. a lifting plate; 14. a wind deflector; 2. an inner cylinder; 3. a feed end; 4. a discharge end; 5. a rolling ring; 6. a riding wheel device; 71. a ring gear; 72. a transmission gear; 73. a speed reducer; 74. an electric motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Aiming at the problems that the pellet drying efficiency of the cylinder dryer is low and the pellet is easy to damage, the inventor finds that when the pellet rolls to the bottom of the cylinder, the hot air is concentrated at the middle upper part of the cylinder, and the bottom of the material is contacted with the inner wall of the cylinder, so that the pellet is difficult to be fully contacted with the hot air, and the drying efficiency is low. The pellets are damaged when the lifting plate drives the pellets to roll, and especially the pellets are more seriously damaged due to higher moisture, higher quality and lower strength in the drying front section.

In order to solve the above problems, in one aspect, as shown in fig. 1, an embodiment of the present utility model provides a drying drum, including: a drum 1;

the roller 1 comprises a roller front section 11 and a roller rear section 12;

an inner cylinder 2 which is coaxial with the roller 1 and rotates synchronously with the roller 1 is arranged in the front section 11 of the roller; a plurality of vent holes are formed in the wall of the inner cylinder 2; the outer wall of the inner cylinder 2 is in clearance fit with the inner wall of the roller 1;

a plurality of lifting blades 13 are arranged on the inner wall of the rear section 12 of the roller.

In some embodiments, according to the discovery of the inventor that the damage is more serious in the drying front section due to higher moisture, higher mass and lower strength of the pellets, if the material lifting plate 13 is arranged in the drum front section 11, the material lifting plate 13 of the drum front section 11 drives the pellets to roll and simultaneously causes the damage of the pellets, in the embodiment, the drum 1 is divided into a drum front section 11 and a drum rear section 12, the drum front section 11 corresponds to the drying front section, the drum rear section 12 corresponds to the drying rear section, the material lifting plate 13 is not arranged in the drum front section 11, and the material lifting plate 13 is only arranged in the drum rear section 12; according to the inventor, when the pellets roll to the bottom of the roller 1, hot air is concentrated at the upper middle part of the roller 1, and the bottom of the material is contacted with the inner wall of the roller 1, so that the pellets are difficult to be fully contacted with the hot air to cause the problem of low drying efficiency, in the embodiment, an inner cylinder 2 which rotates synchronously with the roller 1 is arranged in the front section 11 of the roller, a plurality of vent holes are arranged on the wall of the inner cylinder 2, the outer wall of the inner cylinder 2 is in clearance fit with the inner wall of the roller 1, the hot air can fully flow in the clearance between the outer wall of the inner cylinder 2 and the inner wall of the roller 1 to fill the whole clearance, the hot air can continuously dry the pellets through the plurality of vent holes, and the contact area between the pellets and the hot air is increased, so that the problem of low drying efficiency caused by the fact that the pellets are difficult to be fully contacted with the hot air is solved. Preferably, the drum 1 may be a cylinder; the inner cylinder 2 may be a mesh cylinder. The front drum section 11 and the rear drum section 12 can respectively occupy the length range of the drum 1 and can be distributed according to specific drying requirements such as the water content and the hardness of pellets, for example, the pellets are large in water content and easy to damage, the length of the front drum section 11 can be properly increased, the length of the rear drum section 12 can be reduced, so that the moisture of the pellets is reduced before being thrown through the lifting plate 13, the hardness of the pellets is increased, the moisture of the pellets is reduced, the dead weight of the pellets is reduced and the strength of the pellets is improved after passing through the front drum section 11 (corresponding to the front drying section), a powerful condition is provided for the pellets entering the rear drum section 12 (corresponding to the rear drying section), and the probability of damage of the pellets in the throwing process after entering the rear drum section 12 is reduced.

The embodiment of the utility model has the following technical effects: through dividing the roller 1 into a roller front section 11 and a roller rear section 12, adding an inner cylinder 2 for the roller front section 11, arranging a plurality of vent holes on the inner cylinder 2, arranging a plurality of lifting blades 13 on the roller rear section 12, and through experiments, under the condition of the same heat supply temperature and drying time, the pellets dried by the roller have lower moisture and higher strength, and when the drying time is 120 minutes, the moisture of the pellets can be reduced by 23.8%, the pellet strength can be improved by 35.2%, the drying efficiency is obviously improved, and the pellet breakage is reduced.

Further, at least one wind deflector 14 is provided between the outer wall of the inner drum 2 and the inner wall of the drum 1.

In some embodiments, the hot air flow may shuttle through the ventilation holes (or mesh openings) on the inner drum 2 of the drum front section 11 to make sufficient contact with the pellet surface to increase drying efficiency, while the air deflector 14 provided inside the drum 1 serves to shield and drive the hot air flow into the inner drum 2. The wind deflector 14 and the inner wall of the roller 1 can be vertically connected or obliquely connected; the wind deflector 14 may be curved or planar. The wind deflector 14 may be a full circular plate or a circular sector plate along the circumference of the inner wall of the drum 1;

the embodiment of the utility model has the following technical effects: by arranging the wind shield 14, the hot air flow is driven into the inner cylinder 2, so that the hot air flow can be fully utilized, and the drying efficiency is improved.

Further, the at least one wind deflector 14 is circumferentially equidistant along the inner wall of the drum 1, and the top end of the wind deflector 14 is in clearance fit with the outer wall of the inner drum 2.

In some embodiments, the hot gas flow is evenly distributed into the inner barrel by equidistant placement, and the top end of the wind deflector 14 is in clearance fit with the outer wall of the inner barrel 2 to allow the hot gas flow to be evenly distributed to the outside of the inner barrel 2 through the clearance between the top end of the wind deflector 14 and the outer wall of the inner barrel 2 so as to continue to be evenly distributed to the inside of the whole inner barrel 2 through the vent holes. Preferably, the at least one wind deflector 14 is 3, 4, 5 or 6 and is equally spaced circumferentially along the inner wall of the drum 1. Preferably, the top end of the wind deflector 14 is about 1-2 cm from the outer wall of the inner barrel 2.

The embodiment of the utility model has the following technical effects: the hot air flow is driven into the inner cylinder 2 by arranging the wind shield 14, so that the hot air flow can be fully utilized, and the drying efficiency is improved.

Further, the lifting blades 13 are uniformly distributed on the inner wall of the rear section 12 of the drum.

In some embodiments, the material lifting plate 13 is arranged at the rear section 12 of the roller, and the material lifting plate 13 is not arranged at the front section 11 of the roller, so that the problem that the pellets are damaged when the material lifting plate 13 at the front section of the drying drives the pellets to roll over if the material lifting plate 13 is arranged at the front section of the drying because the pellets are higher in moisture, higher in quality and lower in strength and are more serious in damage is avoided. The lifting blades 13 are uniformly distributed on the inner wall of the rear section 12 of the roller, so that the pellets can be uniformly rolled to improve the uniform heating effect.

Further, the material lifting plate 13 is L-shaped, and the angle of the bending part of the L-shaped material lifting plate 13 is 45-60 degrees.

In some embodiments, the material lifting plate 13 disposed inside the rear section 12 (corresponding to the drying rear section) of the drum has a smaller bending angle (i.e. the angle at which the L-shaped material lifting plate 13 is bent may be 45, 50, 55 or 60 degrees, etc.), so that the pellets can be thrown at a lower height when driven by the material lifting plate 13 to rotate with the drum 1, thereby weakening the collision with the inner wall of the drum 1. Effectively avoiding the damage problem of the pellets.

Further, the drum front section 11 and the drum rear section 12 are equal in length.

In some embodiments, the drum front section 11 and the drum rear section 12 each occupy half of the length of the drum 1.

Further, the drum 1 is arranged obliquely and has an inclination angle of 3-5 degrees with respect to the horizontal plane.

In some embodiments, the drum 1 is disposed obliquely and may have an inclination angle of 3, 3.5, 4, 4.5, or 5 degrees to the horizontal. The inclination angle of the roller 1 is controlled within the range of 3-5 degrees, so that the moving speed of the pellets in the roller 1 can be controlled within a reasonable range, and the pellets are fully dried in the roller 1.

Further, the drum 1 further includes: the device comprises a feeding end 3 arranged on the feeding side of the roller 1, a discharging end 4 arranged on the discharging side of the roller 1, and a smoke discharging and dust removing system;

a first blanking chute is arranged in the feeding end 3 and is connected with the inner cylinder 2 inside the front section 11 of the roller;

the feeding end 3 is also provided with a smoke outlet; the smoke exhaust and dust removal system is connected to the outside of the smoke exhaust port;

a second discharging chute is arranged in the discharging end 4;

the discharging end 4 is also provided with a heat supply air port;

the second blanking chute is communicated with the heat supply air port.

In some embodiments, pellets to be dried can be lifted to the feeding end 3 through a feeding belt, enter the inner cylinder 2 in the front section 11 of the roller through a discharging chute, roll towards the discharging end 4 by being driven by the obliquely rotating inner cylinder 2, and hot air is blown in through a hot air supply port in the discharging end 4 through a blower. The hot air flows from the discharge end 4 to the feed end 3, the pellets roll from the feed end 3 to the discharge end 4, and the pellets run in opposite directions, so that the drying efficiency is improved. The smoke exhausting and dust removing system and the smoke exhaust port can timely remove the dust falling from the pellets, and prevent the dust from accumulating in the roller 1 for a long time to cause the blockage of the roller 1.

Further, the drying cylinder further comprises: at least one rolling ring 5 installed along the circumference of the outer wall of the drum 1, a riding wheel device 6 for bearing the rolling ring 5 and a transmission device arranged below the middle part of the drum for driving the drum to rotate.

In some embodiments, the transmission device drives the roller to rotate, and the transmission device and the riding wheel device are arranged below the middle part of the roller, so that the space below the obliquely arranged roller is fully utilized, and the occupation of the installation space is saved.

Further, the transmission device is an adjustable speed transmission device; the adjustable speed transmission device comprises: a ring gear 71 annularly fixed to the outside of the drum 1, a transmission gear 72 engaged with the ring gear, a speed reducer 73, and a motor 74; the motor 74 is drivingly connected to the speed reducer 73; the speed reducer 73 is drivingly connected to the transmission gear 72.

In some embodiments, the transmission is an adjustable speed transmission, and the rotational speed of the drum 1 can be set according to specific requirements, so as to improve the drying efficiency under the condition of ensuring low damage rate of the pellets. The rotating speed of the roller 1 can also be set to be changed in a pulsating mode, and gaps can be formed between the pellets due to the change of stumbling, so that the inflow of hot air is facilitated, and the contact area of the hot air and the pellets is increased.

The foregoing technical solutions of the embodiments of the present utility model will be described in detail with reference to specific application examples, and reference may be made to the foregoing related description for details of the implementation process that are not described.

Aiming at how to effectively improve the drying efficiency of pellets and reduce the breakage of the pellets, as shown in fig. 1, the utility model provides a drying cylinder, which is also a novel efficient drying cylinder, comprising: a feeding end 3, a roller 1 and a discharging end 4.

The roller 1 comprises a roller front section 11 and a roller rear section 12, rolling rings 5 which are circumferentially arranged are arranged at two ends of the roller 1, the roller is borne on a riding wheel device 6 through the rolling rings 5, and a transmission device is arranged in the middle of the roller 1 and is responsible for driving the roller 1 to rotate. The inner cylinder 2 and the wind shields 14 are arranged in the front section 11 of the roller, the inner cylinder 2 is in a mesh cylinder shape, the inner cylinder 2 is fixed at the center of the roller 1 and can synchronously rotate along with the roller 1, and the wind shields 14 are circumferentially equidistant along the inner wall of the roller 1. A lifting plate 13 is arranged in the rear section 12 of the roller, and the lifting plate 13 is uniformly distributed in the roller 1 in a circular array; the feeding end 3 is connected with a first blanking chute, the first blanking chute is connected with an inner cylinder 2 in a front section 11 of the roller and can convey materials into the inner cylinder 2, the feeding end 3 is connected with a smoke outlet, and a smoke discharging and dust removing system is connected outside the smoke outlet; the discharge end 4 is connected with a second blanking chute and is communicated with a hot air supply port, and hot air can be blown into the roller 1 from the discharge end 4 and flows out from a smoke dust discharge port of the feed end 3.

Preferably, the transmission device is an adjustable speed transmission device, and the rotating speed can be adjusted according to the requirement to drive the roller 1 to rotate.

Preferably, the drum 1 is disposed obliquely and has an inclination angle of between 3 and 5 degrees with respect to the horizontal plane.

Preferably, the length of the front section 11 and the rear section 12 of the roller respectively accounts for half of the length of the roller 1.

Preferably, the wind guard 14 is arranged with 3-6 blocks along the circumference of the inner wall of the roller 1 at equal intervals, and is about 1-2 cm (cm) from the outer wall of the inner cylinder.

Preferably, the lifting blades 13 are L-shaped, and the angle of the bending part of the L-shaped lifting blades 13 is 45-60 degrees.

The utility model develops pellet materials in the iron and steel industry, hot air flows can shuttle in meshes (namely vent holes) on the inner cylinder 2 of the front section 11 of the roller to fully contact with the surfaces of the pellets so as to improve drying efficiency, and the wind shield 14 arranged inside plays a role in shielding and driving the hot air flows into the inner cylinder 2. The pellets have reduced moisture, reduced dead weight and improved strength after passing through the front section 11 of the drum, providing a powerful condition for the pellets to enter the rear section 12 of the drum. The material lifting plate 13 arranged in the rear section 12 of the roller has a smaller bending angle, so that pellets can be thrown at a lower height when driven by the material lifting plate 13 to rotate along with the roller 1, and the collision between the pellets and the inner wall of the roller 1 is weakened. Therefore, the utility model can obviously improve the drying efficiency, reduce the damage of the pellets, has simple structure and stable operation, and has better economic value and environmental protection value. The comparison of the drying effect of the drying cylinder before and after modification in different drying time is shown in table 1.

Table 1 comparison of drying effects in different drying times before and after modification of the drying cylinder

Compared with the drying cylinder before the modification, the pellets dried by the high-efficiency drying cylinder have lower moisture and higher strength under the same heat supply temperature and drying time, and the moisture of the pellets can be reduced by 23.8 percent and the strength of the pellets can be improved by 35.2 percent when the drying time is 120 minutes, so that the utility model can obviously improve the drying efficiency and reduce the breakage of the pellets.

The utility model is illustrated in the following by way of further examples:

as shown in fig. 1, an embodiment of the present utility model provides a drying drum, including: the feeding end 3, the roller 1 and the discharging end 4 are connected in axial sequence, the feeding end 3 is provided with a feeding port and a smoke exhaust port, and the discharging end 4 is provided with a discharging port and a hot air inlet.

The two ends of the roller 1 are provided with rolling rings 5 which are arranged along the circumferential direction, and the roller 1 is borne on a riding wheel device 6 through the rolling rings 5; the middle part of the roller 1 is provided with a transmission device which is responsible for driving the roller 1 to rotate the roller body.

Further, the roller 1 is obliquely arranged and has an inclination angle of 3-5 degrees with the horizontal plane; the roller 1 is composed of a roller front section 11 and a roller rear section 12, and the length of the roller front section 11 and the length of the roller rear section 12 respectively occupy half of the length of the roller 1.

Further, an inner cylinder 2 and a wind shield 14 are arranged in the front section 11 of the roller, the inner cylinder 2 is fixed at the center of the roller 1 and can synchronously rotate along with the roller 1, and is arranged in a mesh cylinder shape, and openings are formed at two ends of the inner cylinder; the wind shields 14 are circumferentially equidistant by 3-6 blocks along the inner wall of the roller 1, and the top ends of the wind shields 14 are about 1-2 cm away from the outer wall of the inner cylinder 2.

Further, the inside of cylinder back section 12 is provided with the lifting blade 13, lifting blade 13 is circular array evenly distributed in cylinder 1, lifting blade 13 is L shape, and the angle of L shape lifting blade 13 department of bending is 45 ~ 60 degrees.

Further, the feeding end 3 is connected with a blanking chute, and the blanking chute is connected with the inner cylinder 2 in the front section 11 of the roller and can convey materials into the inner cylinder 2; the feeding end 3 is connected with a smoke outlet, and a smoke discharging and dust removing system is connected outside the smoke outlet.

Further, the discharging end 4 is connected with a discharging chute for discharging pellets, the discharging end 4 is communicated with a hot air supply port, and hot air can be blown into the roller 1 through the discharging end 4 by a blower and discharged into a smoke discharging and dust removing system for processing through a smoke outlet of the feeding end 3.

Further, the transmission device is an adjustable speed transmission device and comprises a ring gear 71, a transmission gear 72, a speed reducer 73 and a motor 74, wherein the ring gear 71 is annularly fixed outside the cylinder body of the cylinder 1, the transmission gear 72 is meshed with the gear, and the motor 74 drives the transmission gear 72 through the speed reducer 73 so that the ring gear 71 drives the cylinder 1 to rotate.

The utility model is illustrated in the following by way of further examples:

as shown in fig. 1, an embodiment of the present utility model provides a drying drum, including: a feeding end 3, a roller 1 and a discharging end 4.

The pellets to be dried can be lifted to the feeding end 3 through a feeding belt, enter the inner cylinder 2 in the front section 11 of the roller through a discharging chute, and roll towards the discharging end 4 by being driven by the obliquely rotating inner cylinder 2. Hot air is blown in from a hot air supply port in the discharge end 4 through a blower, flows in and out in the inner cylinder 2 under the action of a wind shield 14 in the front section 11 of the roller, fully contacts with pellets in the inner cylinder 2, and reduces moisture, dead weight and strength after the pellets pass through the front section 11 of the roller. The pellets then enter the rear section 12 of the roller, are continuously carried up by a lifting plate 13 arranged in the roller, are thrown from a higher position to fully contact with hot air flow, roll out of a blanking chute in the discharge end 4, and the crushed powder can enter the rear section of the roller 1 through a gap between the inner cylinder 2 and the wind shield 14 and finally are discharged through the discharge end 4. The smoke dust can be discharged from a smoke outlet in the feeding end 3 and enter a smoke dust removing system for treatment. In actual production, the water content of the pellets to be dried is different, and the requirements after drying are also different, so that the rotation speed of the roller 1 is regulated by the transmission device according to the requirements to control the drying time so as to find the optimal balance point of energy conservation and high efficiency on the premise of meeting the requirements.

Through experiments, the pellets dried by the method have lower moisture and higher strength under the same heat supply temperature and drying time, and the moisture of the pellets can be reduced by 23.8% and the strength of the pellets can be improved by 35.2% when the drying time is 120min, so that the method can obviously improve the drying efficiency and reduce the breakage of the pellets.

It should be understood that the specific order or hierarchy of steps in the processes disclosed are examples of exemplary approaches. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, utility model lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment of this utility model.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. As will be apparent to those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, as used in the specification or claims, the term "comprising" is intended to be inclusive in a manner similar to the term "comprising". Furthermore, any use of the term "or" in the specification of the claims is intended to mean "non-exclusive or".

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A dryer cartridge, comprising: a drum (1);

the roller (1) comprises a roller front section (11) and a roller rear section (12);

an inner cylinder (2) which is coaxial with the roller (1) and synchronously rotates with the roller (1) is arranged in the front section (11) of the roller; a plurality of vent holes are formed in the wall of the inner cylinder (2); the outer wall of the inner cylinder (2) is in clearance fit with the inner wall of the roller (1);

a plurality of lifting blades (13) are arranged on the inner wall of the rear section (12) of the roller.

2. A dryer cartridge as claimed in claim 1, characterised in that at least one wind deflector (14) is provided between the outer wall of the inner drum (2) and the inner wall of the drum (1).

3. A dryer cartridge as claimed in claim 2, characterised in that the at least one wind deflector (14) is circumferentially equidistant along the inner wall of the drum (1), and in that the top end of the wind deflector (14) is in a clearance fit with the outer wall of the inner drum (2).

4. A dryer drum as claimed in claim 1, characterized in that said material lifting plates (13) are uniformly distributed on the inner wall of said drum rear section (12).

5. A dryer according to claim 1, characterized in that the said lifter (13) is L-shaped, the angle at which the L-shaped lifter (13) is bent being 45-60 degrees.

6. A drum according to claim 1, characterized in that the drum front section (11) and the drum rear section (12) are of equal length.

7. A drum according to claim 1, characterized in that the drum (1) is arranged inclined and inclined at an angle of between 3 and 5 degrees to the horizontal.

8. The dryer cartridge of claim 1, said dryer cartridge further comprising: the device comprises a feeding end (3) arranged at the feeding side of the roller (1), a discharging end (4) arranged at the discharging side of the roller, and a smoke discharging and dust removing system;

a first blanking chute is arranged in the feeding end (3) and is connected with the inner cylinder (2) in the front section (11) of the roller;

the feeding end (3) is also provided with a smoke outlet; the smoke exhaust and dust removal system is connected to the outside of the smoke exhaust port;

a second discharging chute is arranged in the discharging end (4);

the discharging end (4) is also provided with a heat supply air port;

the second blanking chute is communicated with the heat supply air port.

9. The dryer cartridge of claim 1, said dryer cartridge further comprising: at least one rolling ring (5) installed along the circumference of the outer wall of the roller (1), a riding wheel device (6) for bearing the rolling ring and a transmission device arranged below the middle part of the roller and used for driving the roller to rotate.

10. The dryer cartridge of claim 9, wherein said transmission means is an adjustable speed transmission means;

the adjustable speed transmission device comprises: a ring gear (71) fixed on the outside of the roller (1), a transmission gear (72) meshed with the ring gear, a speed reducer (73) and a motor (74); the motor (74) is in driving connection with the speed reducer (73); the speed reducer (73) is in driving connection with the transmission gear (72).