阅读说明：本技术 一种烘干滚筒及叶片机构和烘干区叶片 (Drying roller, blade mechanism and drying area blade ) 是由 刘晓东 黄建华 吕威龙 廖昊 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种烘干滚筒及叶片机构和烘干区叶片,烘干区叶片,包括第一烘干区叶片和第二烘干区叶片,第一烘干区叶片为三段折弯叶片,包括沿其宽度方向依次连接的连接折弯区域、第一中间区域和挡边折弯区域,连接折弯区域设置有支腿,用于通过支腿与滚筒内壁面进行连接,且使连接折弯区域与滚筒内壁面之间保留设定空隙；第一烘干区叶片长度方向两侧分别连接设置有挡料板,用于与第一烘干区叶片形成物料容置空间；第二烘干区叶片为带有筛分孔的三段折弯叶片；第二烘干区叶片通过弹性连接件与第一烘干区叶片连接,且位于物料容置空间上方,用于对物料形成筛分作用。能够对滚筒内粗料、细料分离烘干、分离加热。(The invention discloses a drying roller, a blade mechanism and a drying area blade, wherein the drying area blade comprises a first drying area blade and a second drying area blade, the first drying area blade is a three-section bending blade and comprises a connecting bending area, a first middle area and a flange bending area which are sequentially connected along the width direction of the first drying area blade, and the connecting bending area is provided with a supporting leg for connecting with the inner wall surface of the roller through the supporting leg and keeping a set gap between the connecting bending area and the inner wall surface of the roller; two sides of the first drying area blade in the length direction are respectively connected with a material baffle plate which is used for forming a material containing space with the first drying area blade; the second drying area blades are three sections of bent blades with screening holes; the second drying area blade is connected with the first drying area blade through an elastic connecting piece, is located above the material containing space and is used for forming a screening effect on the materials. The coarse material and the fine material in the roller can be separated, dried, separated and heated.)

1. A drying zone blade, characterized in that it comprises a first drying zone blade (1.1) and a second drying zone blade (1.2),

the first drying area blade (1.1) is a three-section bending blade and comprises a connecting bending area (1.1.1), a first middle area (1.1.2) and a flange bending area (1.1.3) which are sequentially connected along the width direction of the blade,

the connecting and bending area (1.1.1) is provided with a supporting leg (1.6) which is used for being connected with the inner wall surface of the roller through the supporting leg (1.6), and a set gap is reserved between the connecting and bending area (1.1.1) and the inner wall surface of the roller;

two sides of the first drying area blades (1.1) in the length direction are respectively connected with a material baffle plate (1.5) for forming a material containing space with the first drying area blades (1.1);

the second drying area blade (1.2) is a three-section bent blade with a screening hole (1.4);

the second drying area blade (1.2) is connected with the first drying area blade (1.1) through an elastic connecting piece, is located above the material containing space and is used for forming a screening effect on the materials.

2. Drying zone blade according to claim 1, characterised in that the second drying zone blade (1.2) comprises a first bending zone (1.2.1), a second intermediate zone (1.2.2) and a second bending zone (1.2.3) which are connected in succession in the width direction thereof.

3. Drying zone blade according to claim 2, wherein the first (1.2.1), second (1.2.3) and second (1.2.2) intermediate regions have the same angle of 150 ° and are both 135 °.

4. Drying zone vane according to claim 2, characterized in that the elastic connection piece is connected at one end to the lower surface of the second intermediate zone (1.2.2) of the second drying zone vane (1.2) and at the other end to the upper surface of the first intermediate zone (1.1.2) of the first drying zone vane (1.1).

5. Drying zone vane according to claim 4, characterized in that the elastic connection is arranged perpendicular to the first intermediate zone (1.1.2) of the first drying zone vane (1.1);

and/or the second intermediate region (1.2.2) of the second drying zone blades (1.2) and the first intermediate region (1.1.2) of the first drying zone blades (1.1) are arranged relatively in parallel.

6. Drying zone blade according to claim 1, characterised in that the angle between the connecting bend region (1.1.1) and the first intermediate region (1.1.2) is 135 ° -150 °, and the angle between the rib bend region (1.1.3) and the first intermediate region (1.1.2) is 90 °;

and/or after the drying area blades (1) are arranged on the inner wall surface of the roller (4), the included angle between the second middle area (1.2.2) of the second drying area blades (1.2) and the tangent line of the inner wall surface of the roller (4) is 45-75 degrees.

7. Drying zone vane according to claim 1, characterized in that the elastic connection is a spring (1.3), comprising at least two springs (1.3).

8. A vane mechanism, characterized by comprising a combustion zone vane (2) and a drying zone vane (1) according to any one of claims 1-7;

the drying zone blades (1) and the combustion zone blades (2) are uniformly arranged on the inner wall surface of the roller (4) in the circumferential direction, the combustion zone blades (2) are arranged on the outlet side of the drying zone blades (1),

the combustion zone blades (2) comprise first combustion zone blades (2.2) and second combustion zone blades (2.1), and the second combustion zone blades (2.1) are arranged outside the first combustion zone blades (2.2);

the first combustion zone blades (2.2) are three sections of bent blades and are arranged on the inner wall surface of the roller (4), and two sides in the width direction and the roller form a circumferentially closed box-shaped space; the second combustion zone blades (2.1) are three sections of bent blades, one side in the width direction is connected with the inner wall surface of the roller (4), a set gap is formed between the other side of the second combustion zone blades and the inner wall surface of the roller (4), a space with one circumferential end open is formed with the roller, and the opening direction is the same as the rotation direction of the roller (4).

9. The vane mechanism as claimed in claim 8, wherein the bending angles at both sides of the first combustion zone vane (2.2) and the second combustion zone vane (2.1) in the width direction are the same, and are 105 degrees and 135 degrees, and the corresponding areas are arranged in parallel;

and/or the combustion zone blades (2) further comprise mounting bases (2.3), and mounting holes used for being connected with the mounting bases (2.3) are respectively formed in the first combustion zone blades (2.2) and the second combustion zone blades (2.1) and are used for being mounted on the inner wall surface of the roller (4) through the mounting bases (2.3).

10. A vane mechanism according to claim 8, characterized by further comprising an aggregate vane (3), the aggregate vane (3) being arranged on the inlet side of the combustion zone vane (2);

the aggregate blade (3) comprises an aggregate plate (3.1), a middle baffle plate (3.2) and a side baffle plate (3.3),

the material collecting plate (3.1) is a three-section bending panel with two sides equal in bending length, the shape size and the bending angle of the material collecting plate (3.1) are the same as those of the first combustion area blade (2.2), and a plurality of through holes (3.4) with set sizes are uniformly distributed on the two-side bending panel;

a side baffle (3.3) is arranged on one side of the material collecting plate (3.1) in the length direction, and the other side of the material collecting plate in the length direction is connected with the first combustion zone blades (2.2); the collecting blades (3) are arranged on the inner wall surface of the roller (4), and two sides in the width direction and the roller form a circumferentially closed box-shaped space; the middle baffle (3.2) is arranged along the length direction of the material collecting plate (3.1), is connected and installed between the material collecting plate (3.1) and the inner wall surface of the roller and is used for collecting blade fine materials entering the material collecting plate (3.1) at the middle baffle (3.2) and then conveying the collected blade fine materials to the inside of the first combustion area blade (2.2).

11. The vane mechanism according to claim 10, characterized in that the bending angles of both sides of the material collecting plate (3.1) are the same, and the side baffle (3.3) is arranged at one end of the material collecting plate (3.1) along the width direction of the material collecting vane (3) and is vertically arranged with the middle area of the material collecting plate (3.1);

and/or the side baffle (3.3) is of an isosceles trapezoid structure, the upper bottom edge of the side baffle is connected with the middle area of the material collecting plate (3.1), and the two waist edges are respectively connected with the bending areas at the two sides of the material collecting plate (3.1);

and/or the middle baffle (3.2) is vertically arranged with the middle area of the material collecting plate (3.1), and the end part of the middle baffle (3.2) is connected with the inner side wall of the side baffle (3.3).

12. The blade mechanism according to claim 10, characterized in that the aggregate blades (3) are staggered with the blades (1) of the first drying area closest to the combustion area to form a circle of aggregate blades (3), and the side baffle (3.3) of the aggregate blades (3) is aligned with the baffle (1.5) on one side of the first drying area blades (1.1).

13. The blade mechanism according to claim 10, further comprising a guide section blade (5), said guide section blade (5) being arranged at an inlet side of said drying section blade (1).

14. A drying drum, characterized by comprising a drum (4) and the blade mechanism of any one of claims 8-13, wherein the blade mechanism is uniformly arranged on the inner wall surface of the drum (4) in the circumferential direction, and the length directions of the drying zone blades (1), the combustion zone blades (2) and the collecting blades (3) are all arranged along the axial direction of the drum (4); drying zone blade (1) is arranged in the drying zone, and combustion area blade (2) are arranged in the combustion area, blade (3) of gathering materials and drying zone blade (1) of the week that is closest to the combustion area are crisscross to be arranged, and the single week number of blade (3) of gathering materials and the single week number of combustion area blade (2) are equal.

Technical Field

The invention belongs to the technical field of drying equipment, and particularly relates to a drying roller, a blade mechanism and drying zone blades.

Background

The drying roller is a core component of the traditional drying equipment, realizes material drying and heating by utilizing the heat convection process of materials and hot flue gas in the roller, and is widely applied to the fields of building materials, metallurgical ores and the like. The drying drum is generally divided into three sections: a combustion area, a drying area and a material guiding area. After materials enter the drying roller through the conveying equipment, the materials rapidly enter the drying area through the action of the helical blades of the material guide area, fall and form a material curtain after the blades of the drying area uniformly distributed on the inner wall surface of the drying area are lifted, and the materials and axial flow hot smoke generated by the combustor generate heat convection in the falling process, so that the purposes of removing moisture and heating the materials are achieved. After moisture is removed in the drying area, the materials enter the combustion area, and the aggregate is heated to the qualified temperature through the thermal radiation effect of flame and the contact heat transfer of the blades in the combustion area.

The existing roller drying area blades and the existing combustion area blades are mostly of three-section bending structures, when aggregates are scattered by the drying area blades, coarse materials and fine materials are scattered together to form a material curtain, and heat exchange is carried out on the material curtain and hot flue gas to remove moisture; when the combustion area blades heat the aggregate, the coarse material and the fine material are wrapped between the roller and the blades, and the aggregate is heated to a qualified temperature when rotating along with the blades.

Disclosure of Invention

The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a drying roller, a blade mechanism and drying zone blades.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:

in a first aspect, there is provided a drying zone vane comprising a first drying zone vane and a second drying zone vane,

the first drying area blade is a three-section bending blade and comprises a connecting bending area, a first middle area and a flange bending area which are sequentially connected along the width direction of the blade,

the connecting and bending area is provided with a supporting leg and is used for being connected with the inner wall surface of the roller through the supporting leg, and a set gap is reserved between the connecting and bending area and the inner wall surface of the roller;

two sides of the first drying area blade in the length direction are respectively connected with a material baffle plate for forming a material accommodating space with the first drying area blade;

the second drying area blades are three sections of bent blades with screening holes;

the second drying area blades are connected with the first drying area blades through elastic connecting pieces and located above the material containing space and used for forming a screening effect on the materials.

In some embodiments, the second drying zone blade comprises a first bending region, a second intermediate region and a second bending region connected in series along a width direction thereof.

Further, the included angles of the first bending area, the second bending area and the second middle area are the same and are both 135-150 °.

Furthermore, one end of the elastic connecting piece is connected to the lower surface of the second middle area of the second drying area blade, and the other end of the elastic connecting piece is connected to the upper surface of the first middle area of the first drying area blade.

Further, the elastic connecting piece is vertically arranged with the first middle area of the first drying area blade;

the second intermediate region of the second drying zone blade is arranged in parallel with the first intermediate region of the first drying zone blade relatively.

Further, the included angle between the connecting bending region and the first middle region is 135-150 °, and the included angle between the flange bending region and the first middle region is 90 °.

In some embodiments, the drying zone vanes are mounted on the inner wall surface of the drum, and the angle between the second intermediate region of the second drying zone vanes and the tangent of the inner wall surface of the drum is 45-75 °.

In some embodiments, the resilient connector is a spring, including at least two springs.

When the drying area blades work, in the whole material lifting stage, coarse materials are thrown out from the second drying area blades, and a complete material curtain is formed. At the initial stage of material lifting, fine materials fall into the blades of the first drying area from the blades of the second drying area through the screening holes, and then slide down from gaps between the blades of the first drying area and the inner wall surface of the drying roller, and a partial material curtain is formed on one side of the roller; in the middle stage of material lifting, fine materials are stored in the blades of the first drying area without being scattered; at the end of the lifting of the material, the fine material stored in the blades of the first drying zone is thrown out, forming a partial curtain on the other side of the drum. The drying device can separate and dry coarse and fine materials aiming at the phenomenon that the coarse and fine materials in the roller are dried and heated unevenly.

In a second aspect, a vane mechanism is provided, comprising a combustion zone vane and said drying zone vane;

the drying zone blades and the combustion zone blades are uniformly arranged on the inner wall surface of the roller in the circumferential direction, the combustion zone blades are arranged on the outlet side of the drying zone blades,

the combustion zone blades comprise first combustion zone blades and second combustion zone blades, and the second combustion zone blades are arranged outside the first combustion zone blades;

the first combustion zone blade is a three-section bent blade and is arranged on the inner wall surface of the roller, and two sides in the width direction and the roller form a circumferentially closed box-type space; the second combustion zone blade is a three-section bent blade, one side in the width direction is connected with the inner wall surface of the roller, a set gap is formed between the other side of the second combustion zone blade and the inner wall surface of the roller, a space with one circumferential end open is formed between the second combustion zone blade and the inner wall surface of the roller, and the opening direction is the same as the rotation direction of the roller.

In some embodiments, the bending angles at both sides of the first combustion zone blade and the second combustion zone blade in the width direction are the same, and are 105-135 degrees, and the corresponding regions are arranged in parallel;

the combustion zone blades further comprise mounting bases, and mounting holes used for being connected with the mounting bases are formed in the first combustion zone blades and the second combustion zone blades respectively and used for being mounted on the inner wall surface of the roller through the mounting bases.

In some embodiments, the vane mechanism further comprises an aggregate vane disposed on an inlet side of the combustion zone vane;

the aggregate blade comprises an aggregate plate, a middle baffle plate and a side baffle plate,

the material collecting plate is a three-section bending panel with two sides having equal bending length, the shape size and the bending angle of the material collecting plate are the same as those of the first combustion area blades, and a plurality of through holes with set sizes are uniformly distributed on the two-side bending panel;

a side baffle is arranged on one side of the material collecting plate in the length direction, and the other side of the material collecting plate in the length direction is connected with the first combustion zone blades; the collecting blades are arranged on the inner wall surface of the roller, and two sides in the width direction and the roller form a circumferentially closed box-type space; the middle baffle is arranged along the length direction of the material collecting plate, is connected and installed between the material collecting plate and the inner wall surface of the roller and is used for conveying the fine blade materials entering the material collecting plate to the interior of the first combustion area blade after being collected at the middle baffle.

In some embodiments, the bending angles of the two sides of the aggregate plate are the same, and the side baffle is arranged at one end of the aggregate plate along the width direction of the aggregate blade and is arranged perpendicular to the middle area of the aggregate plate;

the side baffle is of an isosceles trapezoid structure, the upper bottom edge of the side baffle is connected with the middle area of the aggregate plate, and the two waist edges of the side baffle are respectively connected with the bending areas at the two sides of the aggregate plate;

the middle baffle plate is perpendicular to the middle area of the aggregate plate, and the end part of the middle baffle plate is connected with the inner side wall of the side baffle plate.

Further, the blade of gathering materials and the crisscross arrangement of a week drying zone blade that is closest to the combustion area form a week blade of gathering materials, and the side shield of the blade of gathering materials aligns with the striker plate of this week first drying zone blade one side.

In some embodiments, the blade mechanism further comprises a guide section blade, and the guide section blade is arranged on the inlet side of the drying section blade.

In a third aspect, the present invention further provides a drying drum, including the above vane mechanism, the vane mechanism is uniformly arranged on the inner wall surface of the drum in the circumferential direction, and the length directions of the drying zone vane, the combustion zone vane and the collecting vane are all arranged along the axial direction of the drum; the drying area blades are arranged in the drying area, the combustion area blades are arranged in the combustion area, the material collecting blades and the drying area blades which are closest to the combustion area are arranged in a staggered mode, and the number of the single circles of the material collecting blades is equal to that of the single circles of the combustion area blades.

Has the advantages that: according to the drying roller, the blade mechanism and the drying area blades, the drying area blades vibrate along with the movement of the first drying area blades and the change of the mass of materials in the blades, so that fine materials are screened to the first drying area blades. The first drying area blades are arranged on the inner wall of the roller through supporting legs, a certain gap is reserved between the blades and the roller, and when fine materials are in the first drying area blades, partial material curtains are formed on two sides of the roller. The blade that gathers materials is installed in the middle of the flitch that gathers materials through well baffle, and the board that will gather materials is divided into two, can collect the thin material that drying zone blade was shed, carries it to inside the first combustion area blade. The combustion area blade mainly comprises first combustion area blade and second combustion area blade, and first combustion area blade is installed inside the second combustion area blade, can be with coarse fodder, the separation heating of thin material. The phenomenon that coarse materials and fine materials in the roller are dried and heated unevenly can be overcome, the coarse materials and the fine materials are separated, dried and heated, and meanwhile, the phenomenon that only one aggregate is heated is avoided, so that the coarse materials and the fine materials are dried and heated at the same time to reach the qualified temperature, the heat exchange efficiency of the roller is improved, and the oil consumption is reduced.

Drawings

FIG. 1 is a structural view of a drying drum of an embodiment;

FIG. 2 is a blade structure view of a drying zone of the embodiment;

FIG. 3 is a combustion zone vane configuration view of an embodiment;

FIG. 4 is a structural view of an aggregate blade of an embodiment;

FIG. 5 is a vane structure view of a first drying section of the embodiment;

FIG. 6 is a vane structure view of a second drying section of the embodiment;

FIG. 7 is a first combustion zone vane configuration view of the embodiment;

FIG. 8 is a second combustion zone vane configuration view of the embodiment;

in the figure: 1-drying zone blade, 2-combustion zone blade, 3-aggregate blade, 4-roller, 5-guide zone blade, 1.1-first drying zone blade, 1.2-second drying zone blade, 1.3-spring, 1.5-baffle plate, 1.6-supporting leg, 2.1-second combustion zone blade, 2.2-first combustion zone blade, 2.3-mounting base, 3.1-aggregate plate, 3.2-middle baffle plate and 3.3-side baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may also include different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.