Drying kiln body and drying kiln

Abstract

The utility model provides a drying kiln body and drying kiln, including the cylinder body and be fixed in the inner wall of cylinder body, it is equipped with a plurality of groups of material raising subassembly along the axial direction of cylinder body, each group of material raising subassembly includes a plurality of material raising components that surround the central axis of cylinder body evenly and be arranged on the circumferential inner wall of cylinder body, the lifting components of each lifting assembly and the lifting components of the adjacent lifting assembly are arranged in a staggered mode, the lifting components of every two lifting assemblies are arranged in a row in the first direction A, the first direction A is parallel to the axial direction of the barrel, each lifting component comprises a lifting plate, each lifting plate comprises a lifting face, and the lifting faces are arranged on the lifting face. A certain included angle is formed between the material raising surface and the first direction A, and the material raising plate is gradually inclined from the feeding side to the discharging side, so that the material raising surface is obliquely arranged towards the discharging end. The device can effectively solve the problems that in the prior art, a drying kiln is prone to material blocking and low in drying efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of laterite nickel ore drying equipment, and particularly relates to a drying kiln body and a drying kiln. Background Technique

[0002] The cylinder body of the laterite nickel ore drying kiln is a key component of the drying kiln and is the main place for the material drying function. The material enters the inside of the cylinder body of the laterite nickel ore drying kiln, and under the action of the material lifting device, the material is lifted and scattered. At the same time, due to the rotation and inclined installation of the cylinder body of the drying kiln, the material flows inside the laterite nickel ore dryer from the feeding end to the discharging end. The material lifting device is a key component of the laterite nickel ore drying kiln and is welded on the inner wall surface of the cylinder body. After the material enters the cylinder body of the drying kiln, it is continuously lifted from the lower part of the cylinder body by the rotating material lifting device. With the rotary motion of the cylinder body of the drying kiln, the material accumulated on the material lifting device begins to slide from the end and side of the material lifting device, forming a material curtain inside the cylinder body of the drying kiln to fully exchange heat with the hot flue gas, and completing the drying process of the material temperature rise. The lifting height, scattering form and uniformity of the material on the cross-section of the cylinder body of the drying kiln affect the heat exchange efficiency of the material inside the cylinder body of the drying kiln, and the structure of the material lifting device directly affects the amount of lifted material and the distribution of the material curtain.

[0003] In the traditional structure of the cylinder body of the laterite nickel ore drying kiln, due to the unreasonable structure and layout of the existing material lifting device, when meeting the design requirements, the material lifting device is installed along the axis of the cylinder body of the drying kiln and has a large size, and is installed densely in the circumferential and axial directions, resulting in a high power of the drying kiln equipment. Moreover, the weight of the material lifting device is relatively large and the overall drying efficiency is low, and the drying kiln cannot be in the best working state. Due to the wet and sticky material and the presence of some large-sized stones, the existing cylinder body structure is prone to material blocking and sticking phenomena, and the effect of increasing production cannot be achieved. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned problems existing in the prior art, and provide a drying kiln body and a drying kiln. This device can improve the drying efficiency of the laterite nickel ore drying kiln, has strong operability, and the material lifting structure inside the cylinder body is light in weight and has good material lifting effect, and can effectively solve the problems of large weight of the material lifting device of the drying kiln, easy material blocking and low drying efficiency in the prior art.

[0005] To achieve the above object, one of the objects of the present utility model is to provide a drying kiln body, which includes a cylinder body and a material lifting component fixedly arranged on the inner wall of the cylinder body. A number of groups of the material lifting components are arranged along the axial direction of the cylinder body. Each group of the material lifting components includes a number of material lifting parts evenly arranged around the circumferential inner wall of the cylinder body around the central axis of the cylinder body. The material lifting parts of each group of the material lifting components are arranged staggeredly with the material lifting parts in the adjacent group of the material lifting components, and the material lifting parts of every other group of the material lifting components are arranged in a column along the first direction A, and the first direction A is parallel to the axial direction of the cylinder body. The material lifting part includes a material lifting plate, and the material lifting plate includes a material lifting surface. The material lifting surface forms a certain angle with the first direction A, and the material lifting plate is gradually inclined from the feed side to the discharge side, so that the material lifting surface is inclined towards the discharge end.

[0006] As a preferred solution, the material lifting surface is a flat plate surface structure.

[0007] As a preferred solution, the material lifting part further includes a support reinforcing plate, and the support reinforcing plate is fixedly arranged on the material lifting plate and is located on the fixed connection surface of the material lifting plate, and the fixed connection surface corresponds to the material lifting surface.

[0008] As a preferred solution, there are two or more groups of the support reinforcing plates.

[0009] As a preferred solution, the end face of the support reinforcing plate is a triangular or trapezoidal structure.

[0010] As a preferred solution, the angle is an acute angle.

[0011] As a preferred solution, it further includes a material blocking part. The material blocking part includes an annular plate arranged on the inner wall of the cylinder body along the axial direction of the cylinder body, and the annular plate is perpendicular to the axial direction of the cylinder body; at least one notch for the material to pass through is arranged on the annular plate.

[0012] As a preferred solution, a material guiding component is further arranged at the inlet end of the cylinder body. The material guiding component includes a number of material guiding screws of a certain length, and the material guiding screws are evenly arranged along the circumferential direction of the inner wall of the inlet end of the cylinder body.

[0013] As a preferred solution, the radial width of the annular plate along the cylinder body is greater than the radial width of the material lifting part along the cylinder body.

[0014] Another object of the present utility model is to provide a drying kiln, which includes the drying kiln body described in any one of the above.

[0015] Beneficial effects

[0016] First, by optimizing the internal structure of the drying kiln body, this solution adopts a new type of lifting component and its layout method. The lifting surface of the lifting component is installed at a certain inclination angle with respect to the axial direction inside the cylinder body. Therefore, the lifting surface can push the material towards the discharge end of the cylinder body and effectively relieve the blockage effect. In this solution, the lifting components adopt a new type of staggered layout method. On the basis of ensuring the lifting effect, the number density of the lifting components distributed axially and circumferentially inside the cylinder body is reduced, the gap between adjacent lifting components is larger, the material passing performance is stronger, and the phenomena of blockage and sticking are not likely to occur. At the same time, the overall weight of the lifting device is greatly reduced, which can effectively reduce the operating power of the drying kiln equipment, enabling the drying kiln to be in a better working state.

[0017] Second, considering that it is convenient to control the residence time of the material in the kiln body, this solution sets a baffle component inside the cylinder body. The baffle component is of a ring structure, and a set of baffle components is arranged on the inner wall of the cylinder body at regular intervals. There are gaps for the material to pass through on the baffle component. This application can more conveniently control the residence time of the material in the cylinder body through the baffle component and effectively change the path of the material flow.

[0018] Third, for the drying kiln adopting the kiln body structure of this solution, since the installation direction of the lifting component is inclined with respect to the axial direction of the cylinder body, it is more conducive to pushing the material towards the discharge end. At the same time, the form of the material curtain is changed, thereby further improving the heat exchange effect inside the kiln body. The formed material curtain contacts the hot flue gas more fully, and the heat exchange efficiency of the drying kiln is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the internal structure diagram of the drying kiln body of the present utility model;

[0021] Figure 2 It is the cross-sectional view of the drying kiln body of the present utility model;

[0022] Figure 3 It is the partial cross-sectional view of the drying kiln body of the present utility model;

[0023] Figure 4 It is the three-dimensional view of the lifting component in the present utility model Figure 1 ;

[0024] Figure 5 It is the side view of the lifting component in the present utility model;

[0025] Figure 6 This is the front view of the material lifting component in the present utility model;

[0026] Figure 7 This is the three-dimensional view of the material lifting component in the present utility model Figure 2 ;

[0027] Figure 8 This is the structural diagram of the material retaining component in the present utility model;

[0028] Figure 9 This is the structural diagram of the discharge end of the cylinder body in the present utility model;

[0029] Figure 10 This is the structural diagram of the feed end of the cylinder body in the present utility model;

[0030] Figure 11 This is the three-dimensional view of the kiln body in the present utility model Figure 1

[0031] Figure 12 This is the three-dimensional view of the kiln body in the present utility model Figure 2 ;

[0032] Reference numerals in the figure: 1, cylinder body; 101, inlet end; 102, outlet end; 2, material lifting assembly; 21, material lifting component; 211, material lifting plate; 212, material lifting surface; 213, fixed connection surface; 214, arc chamfer; 215, support reinforcement plate; 3, material retaining component; 31, annular plate; 32, notch; 4, guiding spiral. Detailed implementation manners

[0033] The present utility model will be specifically described below through exemplary implementation manners. However, it should be understood that without further description, the elements, structures, and features in one implementation manner can also be beneficially combined with those in other implementation manners.

[0034] It should be noted that: Unless otherwise defined, the technical terms or scientific terms used herein should have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The words such as "a", "an", or "the" used in the specification and claims of the patent application of the present utility model do not express a limitation of quantity, but mean that there is at least one. The words such as "comprising" or "including" indicate that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, but do not exclude other elements or objects having the same functions.

[0035] As shown in the figure, a typical embodiment of the present utility model provides a drying kiln body, which includes a cylinder body 1 having an inlet end 101 and an outlet end 102; it includes lifting component 2 arranged at intervals along the axial direction of the cylinder body 1, and each group of lifting component 2 is arranged around the inner wall of the cylinder body 1 in a circumferential circle. Each group of lifting component 2 includes several lifting parts 21, and the lifting parts 21 are fixed on the inner wall of the cylinder body 1 by welding or other means. The positions of the lifting parts 21 in adjacent two groups of lifting components 2 are staggered, ensuring a relatively large gap between adjacent lifting parts 21 and reducing the density of the lifting parts 21, so as to ensure good lifting effect inside the kiln body and good material passing rate. Moreover, the lifting parts 21 of every other group of lifting components are arranged in a column along the first direction A shown in the figure, where the first direction A is parallel to the axis direction of the cylinder body 1. Looking along the axial direction of the cylinder body 1, each lifting part 21 is arranged along a straight line, that is, arranged along the first direction A. The lifting parts 21 are arranged in a regular array. The lifting part 21 includes a lifting plate 211, and the lifting plate 211 has a lifting surface 212 and a fixed connection surface 213. The lifting surface 212 is a flat plate surface structure as the lifting working surface. The lifting surface 212 is neither parallel nor perpendicular to the first direction A, but forms a certain acute angle. Specifically, the incoming material side of the lifting surface 212 deflects and approaches the outlet end 102 of the cylinder body 1, so that the lifting plate 211 gradually inclines from the feed side to the discharge side, aiming to make the lifting surface 212 inclined towards the discharge end. The purpose of installing the lifting part 21 at such an inclined angle is that when the lifting part 21 is installed at an angle inclined towards the outlet end 102 with respect to the axis direction of the cylinder body 1, it is beneficial for the lifting part 21 to have a tendency to push the material towards the outlet end 102 during the lifting operation. In this way, on the basis of ensuring the simple and reasonable structure of the equipment, the situation of material blockage can be significantly improved.

[0036] In this solution, the material lifting component 21 is welded and fixed to the cylinder body 1. An arc chamfer 214 is formed at the corner on the side of the material lifting component 21 away from the inner wall of the cylinder body 1. The material lifting component 21 includes a material lifting plate 211 and a support connecting plate 215. Preferably, in this solution, there are two groups of support connecting plates 215 which are arranged in parallel. One group of support connecting plates 215 is located on the side of the material lifting plate 211 close to the feeding end 101, and the other group of support connecting plates 215 is located on the side of the material lifting plate 211 close to the outlet end 102. Preferably, the two support connecting plates 215 are welded and fixed to the fixed connection surface 213 of the material lifting plate 211, and the support connecting plate 215 is perpendicular to the material lifting plate 211. Specifically, the support connecting plate 215 can adopt the following structure: In the first implementation mode, the support connecting plate 215 is a right trapezoid structure, in which the right-angled side of the support connecting plate 215 is welded to the fixed connection surface 213 of the material lifting plate 211, and the two parallel sides of the support connecting plate 215 are perpendicular to the fixed connection surface 213 of the material lifting plate 211; The second implementation mode is an embodiment not shown in the drawings. The support connecting plate 215 is a right triangle structure, in which one right-angled side of the right triangle is welded to the fixed connection surface 213 of the material lifting plate 211, and the other right-angled side of the support connecting plate 215 is welded to the fixed connection surface 213 of the material lifting plate 211. The consideration for such a design of the support connecting plate 215 is: to make the width of the end of the support connecting plate 215 close to the connection part with the inner wall of the cylinder body 1 greater than the width of the other end, so as to ensure the support connection strength at the root connection part of the material lifting component 21. The purpose of the narrowing of the other end of the support connecting plate 215 is: to minimize the blockage of the end face of the support connecting plate 215 to the material and reduce the overall weight of the material lifting component 21.

[0037] In this embodiment, a material baffle member 3 is further provided inside the cylinder body 1. The function of the material baffle member 3 is as follows: By arranging multiple material baffle members 3 at intervals along the axial direction of the cylinder body 1, it can control the residence time of the material, aggregate the material, and change the material flow path. The material baffle member 3 is an annular plate 31 surrounding the inner wall of the cylinder body 1. Preferably, the radial width of each position of the annular plate 31 along the cylinder body 1 is equal. A notch 32 is provided on the annular plate 31 for the passage of the material. The plate surface of the annular plate 31 is arranged perpendicular to the axis direction of the cylinder body 1. In an embodiment not shown in the drawings in this solution, two or more notches are provided on the annular plate 31. Such a design can improve the passing efficiency. However, compared with the embodiment with one notch, the baffle effect will be reduced to a certain extent. It should be noted that as shown in the figure, the radial width D of the annular plate 31 along the cylinder body 1 can be set as required, and the notch width and quantity of the annular plate 31 can also be set according to the need of the material residence time. In an embodiment of the present invention, the radial width D of the annular plate 31 along the cylinder body 1 is greater than the radial width of the material lifting member 21 along the cylinder body 1, so as to ensure that the material baffle member 3 has an ideal baffle effect.

[0038] In this solution, a material guiding assembly is further provided at the inlet end 101 of the cylinder body 1. The material guiding assembly includes a plurality of material guiding spirals 4 evenly arranged circumferentially around the inner wall of the cylinder body 1, so as to guide the material to avoid material accumulation here.

[0039] Through the improvement of the structure, a material guiding component and a material lifting component 2 are sequentially arranged on the inner wall of the cylinder body 1 from the inlet end 101 to the outlet end 102. And several annular baffle components 3 are welded on the inner wall of the cylinder body 1 at intervals. By installing the material guiding component, the material lifting component 2, and the baffle component 3 on the inner wall of the cylinder body 1 according to their designed dimensions and angles, the material lifting surface 212 of the material lifting part 21 is welded and fixed at a certain inclination angle with the axis of the cylinder body 1, which has the effect of pushing the material towards the outlet end 102 and can effectively relieve the material blocking condition. And the material lifting part 21 adopts the groove welding form to strengthen the weld strength. Through the arrangement and arrangement of the material lifting part 21 in a certain regular manner in the circumferential and axial directions of the cylinder body 1 and the structure of the above-mentioned material lifting part, the height and length dimensions of the material lifting part 21 of this solution are effectively reduced compared with the prior art, making the volume of the material lifting part 21 smaller, the weight lighter, the stress condition greatly improved, and the service life longer. Moreover, due to the staggered arrangement of the material lifting parts 21 of two adjacent material lifting components 2, the number density of the circumferentially arranged material lifting parts 21 in each material lifting component 2 is reduced, and at the same time, the number density of the axially arranged material lifting parts 21 along the cylinder body 1 is also reduced. While ensuring the material lifting effect, the gap between adjacent material lifting parts 21 is larger, enhancing the material passing performance. Through the above improvement, the form of the material curtain inside the drying kiln body is improved, and the formed material curtain is in more sufficient contact with the hot flue gas, improving the heat exchange effect of the kiln body.

[0040] In this solution, within a certain length range at the outlet end 102 inside the cylinder body 1 of the drying kiln body, the baffle component 3 and the material lifting component 2 are not provided, so as to avoid the dusting phenomenon.

[0041] The present utility model also provides an embodiment: a drying kiln, including the above-mentioned drying kiln body. Through the improvement of the kiln body structure of the drying kiln with this kind of structure, the drying effect of the wet and sticky materials in the laterite nickel ore drying kiln can be effectively improved, preventing the occurrence of blocking and sticking phenomena, and at the same time realizing the increase of production and yield.

[0042] The above is only the preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications to the above-disclosed technical content to be equivalent change equivalent embodiments. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. Drying kiln body, characterized in that: It includes a cylinder body, a material blocking component, and a material lifting component fixedly arranged on the inner wall of the cylinder body. There are several groups of the material lifting components arranged along the axial direction of the cylinder body. Each group of the material lifting components includes several material lifting parts evenly arranged around the circumferential inner wall of the cylinder body around the central axis of the cylinder body. The material lifting parts of each group of the material lifting components are arranged staggeredly with the material lifting parts in the adjacent group of the material lifting components, and the material lifting parts of every other group of the material lifting components are arranged in columns along the first direction A, and the first direction A is parallel to the axial direction of the cylinder body. The material lifting part includes a material lifting plate, and the material lifting plate includes a material lifting surface. The material lifting surface forms a certain angle with the first direction A, and the material lifting plate is gradually inclined from the feed side to the discharge side, so that the material lifting surface is inclined towards the discharge end; The material blocking component includes an annular plate arranged on the inner wall of the cylinder body along the axial direction of the cylinder body, and the annular plate is arranged perpendicular to the axial direction of the cylinder body; at least one notch for the material to pass through is arranged on the annular plate.

2. The drying kiln body according to claim 1, characterized in that: The material lifting surface is a flat plate surface structure.

3. The drying kiln body according to claim 2, characterized in that: The material lifting part further includes a support strengthening plate, and the support strengthening plate is fixedly arranged on the material lifting plate and is located on the fixed connection surface of the material lifting plate, and the fixed connection surface corresponds to the material lifting surface.

4. The drying kiln body according to claim 3, characterized in that: There are two or more groups of the support strengthening plates.

5. The drying kiln body according to claim 3, characterized in that: The end face of the support strengthening plate is a triangular or trapezoidal structure.

6. The drying kiln body according to claim 1, characterized in that: The angle is an acute angle.

7. The drying kiln body according to claim 1, characterized in that: A material guiding component is further arranged at the inlet end of the cylinder body. The material guiding component includes several material guiding spirals of a certain length, and the material guiding spirals are evenly arranged along the circumferential direction of the inner wall of the inlet end of the cylinder body.

8. The drying kiln body according to any one of claims 1-7, characterized in that: The radial width of the annular plate along the cylinder body is greater than the radial width of the material lifting part along the cylinder body.

9. A drying kiln, characterized in that, It includes the drying kiln body according to any one of claims 1-8.

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