Heating core body structure of tube type drying machine

Abstract

The utility model provides a heating core body structure of a tube type drying machine. The heating core body structure of the tube type drying machine comprises a main shaft, a first heating section and a second heating section. According to the heating core structure of the tubular dryer, the main shaft is arranged and used for being installed in the barrel, and the first heating section and the second heating section are sequentially arranged on the main shaft in the length direction of the main shaft. The conveying pipe is communicated with a first heating section, and the tail end of the first heating section is communicated with a second heating section. According to the heating device, the first heating section and the second heating section are arranged, the number of the second heating wing plates on the second heating section is larger than that of the second heating wing plates on the second heating section, and therefore the heat dissipation area of the lower end of the barrel can be increased. When the materials are conveyed into the barrel body, the materials are preheated through the first heating section, then pass through the second heating section and are left in the second heating section to be dried, and the utilization rate of heat of a heating medium is effectively increased.

Description

Technical Field

[0001] This utility model belongs to the field of dryer technology, specifically relating to a heating core structure for a tubular dryer. Background Technology

[0002] Tubular dryers utilize a rotating cylinder with heating tubes installed on its outer and inner sides. By circulating a heating medium through these tubes, the material inside the cylinder is dried. During on-site installation, the cylinder is typically tilted so that most of the material is located at one end, allowing it to flow from one end to the other. This flow process facilitates drying and improves heat transfer. The material is then collected at the bottom of the cylinder for final drying. However, in most tubular dryers, the internal pipes are arranged evenly along their length. During the later stages of drying, most material remains in the latter half of the cylinder, while the heat generated by the heating tubes in the first half cannot directly reach the material, resulting in reduced heat transfer efficiency and affecting the utilization rate of the heating medium. Utility Model Content

[0003] This utility model provides a heating core structure for a tubular dryer, which aims to solve the problem of low heat utilization rate of the heating core in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a heating core structure for a tubular dryer, comprising:

[0005] A main shaft, one end of which is equipped with an input pipe for inputting a heating medium;

[0006] A first heating section is installed on the main shaft. The first heating section includes a plurality of first heating vanes, which are arranged at circumferential intervals along the main shaft.

[0007] The second heating section is installed along the length of the main shaft on the side of the first heating section away from the input pipe. The second heating section includes a plurality of second heating wing plates, which are arranged circumferentially along the main shaft, and the number of second heating wing plates is greater than the number of first heating wing plates.

[0008] The first heating wing plate is connected to the input pipe, and the second heating wing plate is connected to the output end of the first heating wing plate.

[0009] In one possible implementation, two second heating vanes form a heating group, and the included angle between two adjacent heating groups is greater than the included angle between two second heating vanes within the same heating group.

[0010] In one possible implementation, the two ends of a plurality of second heating vanes are staggered relative to each other along the length of the main shaft.

[0011] In one possible implementation, the first heating vane includes:

[0012] There are two support tubes, which are arranged parallel to each other at intervals along the length of the main shaft, and the ends of the support tubes are fixedly installed on the main shaft.

[0013] There are multiple heat dissipation pipes, with both ends of each heat dissipation pipe connected to two support pipes, and the multiple heat dissipation pipes are arranged in sequence along the radial direction of the main shaft.

[0014] In one possible implementation, a fixing bracket for fixing the heat dissipation tube is also provided between the two support tubes, and the fixing bracket is fixedly installed on the spindle.

[0015] In one possible implementation, a plurality of sleeves for mounting the heat dissipation pipes are fixedly installed on the mounting bracket, and the heat dissipation pipes are slidably disposed inside the sleeves.

[0016] In one possible implementation, two L-plates for fixing the bracket are fixedly mounted on the spindle. Each L-plate includes a first wing plate inserted inside the spindle and a second wing plate bent and disposed on the first wing plate. The second wing plates on the two L-plates are arranged opposite each other to form a slot for mounting the bracket.

[0017] In one possible implementation, the sidewall at the end of the heat sink protrudes outward to form a plurality of convex rings, and the plurality of convex rings are spaced apart on the heat sink along the length direction of the heat sink.

[0018] The solution shown in this application, compared with the prior art, incorporates a main shaft for installation inside the cylinder. A first heating section and a second heating section are sequentially arranged along the length of the main shaft. When the main shaft is installed on the cylinder, the second heating section is located at the lower end of the cylinder. A conveying pipe connects to the first heating section, and the second heating section connects to the tail end of the first heating section. This application, by including both the first and second heating sections, and ensuring that the number of second heating vanes on the second heating section is greater than the number of heating vanes in the second heating section, increases the heat dissipation area at the lower end of the cylinder. When the material is conveyed into the cylinder, it first passes through the first heating section for preheating, then through the second heating section, and remains inside the second heating section for drying, effectively improving the utilization rate of the heating medium's heat. Attached Figure Description

[0019] Figure 1A schematic diagram of the heating core structure of the tubular dryer provided in this embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the installation structure of the second heating section provided in an embodiment of this utility model;

[0021] Figure 3 A schematic diagram of the installation structure of the first heating wing plate provided in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Main shaft; 2. Input pipe; 3. First heating section; 31. First heating wing plate; 311. Support pipe; 312. Heat dissipation pipe; 32. Fixing frame; 321. Sleeve; 33. L-plate; 331. First wing plate; 332. Second wing plate; 34. Convex ring; 4. Second heating section; 41. Second heating wing plate. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please refer to the following: Figures 1 to 3 The heating core structure of the tubular dryer provided by this utility model will now be described. The heating core structure of the tubular dryer includes a main shaft 1, a first heating section 3, and a second heating section 4. An input pipe 2 for inputting the heating medium is installed at one end of the main shaft 1. The first heating section 3 is installed on the main shaft 1 and includes multiple first heating vanes 31, which are spaced apart circumferentially along the main shaft 1. The second heating section 4 is installed along the length of the main shaft 1 on the side of the first heating section 3 away from the input pipe 2. The second heating section 4 includes multiple second heating vanes 41, which are spaced apart circumferentially along the main shaft 1, and the number of second heating vanes 41 is greater than the number of first heating vanes 31. The first heating vanes 31 are connected to the input pipe 2, and the second heating vanes 41 are connected to the output end of the first heating vanes 31.

[0026] The heating core structure of the tubular dryer provided in this embodiment, compared with the prior art, features a main shaft 1 for installation inside the cylinder. A first heating section 3 and a second heating section 4 are sequentially arranged along the length of the main shaft 1. When the main shaft 1 is installed on the cylinder, the second heating section 4 is located at the lower end of the cylinder. A conveying pipe connects to the first heating section 3, and the second heating section 4 connects to the tail end of the first heating section 3. In this application, by providing the first heating section 3 and the second heating section 4, and with the number of second heating vanes 41 on the second heating section 4 being greater than the number of heating vanes on the second heating section 4, the heat dissipation area at the lower end of the cylinder can be increased. When the material is conveyed into the cylinder, it first passes through the first heating section 3 for preheating, then passes through the second heating section 4, and remains inside the second heating section 4 for drying, effectively improving the utilization rate of the heating medium's heat.

[0027] Specifically, in this embodiment, a first ring pipe and a second ring pipe are also fitted on the outside of the main shaft 1. The first ring pipe is installed at the input pipe 2 and is connected to the conveying pipe. The multiple first heating vanes 31 of the first heating section 3 are respectively connected to the first ring pipe. The second ring pipe is installed between the first heating section 3 and the second heating section 4. The output end of the first heating vane 31 is connected to the second ring pipe. The input end of the second heating vane 41 is connected to the second ring pipe. The output end of the second heating vane 41 is used to discharge the heating medium.

[0028] In some embodiments, the second heating fin 41 described above can be as follows: Figure 2 The structure shown. See also Figure 2 Two second heating vanes 41 form a heating group, and the included angle between two adjacent heating groups is greater than the included angle between two second heating vanes 41 within the same heating group. The second heating vanes 41 are arranged in pairs, with multiple heating groups evenly spaced along the circumference of the main shaft 1. Furthermore, the included angle between two adjacent heating groups along the circumference of the main shaft 1 is greater than the included angle between two second heating vanes 41 within the same heating group. This ensures the quantity of second heating vanes 41 while providing sufficient maintenance space between the two heating groups, facilitating later maintenance of the second heating vanes 41 by operators.

[0029] In some embodiments, the second heating fin 41 described above can be as follows: Figure 1 The structure shown. See also Figure 1Multiple second heating vanes 41 are staggered at both ends along the length of the main shaft 1. The second heating vanes 41 and the first heating vane 31 are spaced apart along the length of the main shaft 1, and the multiple second heating vanes 41 are also spaced apart circumferentially along the main shaft 1. Furthermore, the staggered arrangement of the multiple second heating vanes 41 along the length of the main shaft 1 allows for an increase in the length of the second heating section 4, provided there is a certain number of second heating vanes 41, thereby improving the heating and drying effect on the material.

[0030] In some embodiments, the first heating fin 31 described above may be as follows: Figure 1 , Figure 3 The structure shown. See also... Figure 1 , Figure 3 The first heating vane 31 includes support pipes 311 and heat dissipation pipes 312. There are two support pipes 311, spaced parallel to each other along the length of the main shaft 1, with their ends fixed to the main shaft 1. There are multiple heat dissipation pipes 312, with both ends connected to the two support pipes 311, and arranged radially along the main shaft 1. One end of each support pipe 311 is fixedly welded to the main shaft 1, and the other end is fixedly mounted to the inner wall of the cylinder. The length of each support pipe 311 is radially aligned with the main shaft 1. Multiple heat dissipation pipes 312 are installed between the two support pipes 311, with both ends connected to the two support pipes 311, and spaced apart along the length of each support pipe 311. The two support pipes 311 on the first heating vane 31 are connected to the input pipe 2 and the second heating section 4, respectively. This allows the heating medium to be transferred from the first heating vane 31 to the second heating vane 41.

[0031] Specifically, in this embodiment, the heating medium is steam.

[0032] Specifically, in this embodiment, the structure of the second heating wing plate 41 is the same as that of the first heating wing plate 31, and the two support tubes 311 on the second heating wing plate 41 are respectively used to connect with the output end of the first heating wing plate 31 and to discharge the heating medium.

[0033] In some embodiments, the heat pipe 312 may be as follows: Figure 3 The structure shown. See also Figure 3A fixing bracket 32 ​​for fixing the heat dissipation pipe 312 is also provided between the two support pipes 311. The fixing bracket 32 ​​is fixedly installed on the main shaft 1. One end of the fixing bracket 32 ​​is fixedly installed on the main shaft 1, and the other end is used to fix it to the inner wall of the cylinder. Multiple fixing brackets 32 are installed between the two support pipes 311. The setting of the fixing brackets 32 can enhance the stability of the support for the heat dissipation pipe 312.

[0034] In some embodiments, the aforementioned fixing bracket 32 ​​may be adopted as follows: Figure 3 The structure shown. See also Figure 3 Multiple sleeves 321 for mounting heat dissipation pipes 312 are fixedly installed on the mounting bracket 32. The heat dissipation pipes 312 are slidably disposed inside the sleeves 321. The axis of each sleeve 321 is aligned with the length of the heat dissipation pipe 312, and the middle portion of the heat dissipation pipe 312 is inserted into the sleeve 321. The heat dissipation pipe 312 and the sleeve 321 are in a sliding fit. Both ends of the heat dissipation pipe 312 are fixedly welded to the support pipe 311. The sliding fit between the heat dissipation pipe 312 and the sleeve 321 prevents deformation due to thermal expansion and contraction when the temperature of the heat dissipation pipe 312 changes. By sliding the heat dissipation pipe 312 inside the sleeve 321, cracking at the connection point between the heat dissipation pipe 312 and the mounting bracket 32 ​​can be avoided, thus improving the stability of the heat dissipation pipe 312 during use.

[0035] In some embodiments, the spindle 1 described above can be as follows: Figure 3 The structure shown. See also Figure 3 Two L-plates 33 are fixedly mounted on the spindle 1 for fixing the mounting bracket 32. Each L-plate 33 includes a first wing plate 331 inserted inside the spindle 1 and a second wing plate 332 bent onto the first wing plate 331. The second wing plates 332 on the two L-plates 33 are arranged opposite each other to form a slot for mounting the mounting bracket 32. A slot is provided on the spindle 1 for mounting the first wing plate 331 on the L-plates 33. The first wing plate 331 is inserted into the slot and fixed to the spindle 1 by welding. The second wing plates 332 on the two L-plates 33 are arranged opposite each other and spaced apart to form a slot for mounting the mounting bracket 32. One end of the mounting bracket 32 ​​is inserted into the slot and fixed to the second wing plate 332 by welding. When installing the mounting bracket 32, its position along the radial direction of the spindle 1 can be freely adjusted, facilitating the insertion of the heat dissipation pipe 312 into the sleeve 321. Finally, the mounting bracket 32 ​​is fixedly installed to the second wing plate 332 by welding.

[0036] Preferably, in this embodiment, the fixing frame 32 is made of steel plate, and a mounting hole for mounting sleeve 321 is provided in the middle of the steel plate. Multiple sleeves 321 can be fixed to the steel plate by welding, and one end of the steel plate is inserted between two second wing plates 332.

[0037] In some embodiments, the heat pipe 312 may be as follows: Figure 3 The structure shown. See also Figure 3 The sidewall of the end of the heat sink 312 protrudes outward to form multiple convex rings 34, which are spaced apart along the length of the heat sink 312. The sidewall of the end of the heat sink 312 bends outward to form the convex rings 34. During operation, the heat sink 312 will change size due to thermal expansion and contraction after being heated or cooled. The design of the convex rings 34 allows for the expansion and contraction of the heat sink 312 along its length, preventing cracking of the heat sink 312 or the connection between the heat sink 312 and the support tube 311.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating core structure for a tubular dryer, characterized in that, include: A main shaft (1), one end of which is equipped with an input pipe (2) for inputting heating medium; The first heating section (3) is installed on the main shaft (1). The first heating section (3) includes a plurality of first heating vanes (31), which are arranged at circumferential intervals along the main shaft (1). The second heating section (4) is installed on the side of the first heating section (3) away from the input pipe (2) along the length direction of the main shaft (1). The second heating section (4) includes a plurality of second heating wing plates (41). The plurality of second heating wing plates (41) are arranged circumferentially along the main shaft (1), and the number of second heating wing plates (41) is greater than the number of first heating wing plates (31). The first heating wing plate (31) is connected to the input pipe (2), and the second heating wing plate (41) is connected to the output end of the first heating wing plate (31).

2. The heating core structure of the tubular dryer as described in claim 1, characterized in that, The two second heating vanes (41) form a heating group, and the included angle between two adjacent heating groups is greater than the included angle between two second heating vanes (41) in the same heating group.

3. The heating core structure of the tubular dryer as described in claim 1, characterized in that, The two ends of the plurality of second heating wing plates (41) along the length direction of the main shaft (1) are staggered relative to each other along the length direction of the main shaft (1).

4. The heating core structure of the tubular dryer as described in claim 1, characterized in that, The first heating wing (31) includes: There are two support tubes (311), which are arranged parallel to each other at intervals along the length direction of the main shaft (1), and the ends of the support tubes (311) are fixedly installed on the main shaft (1). There are multiple heat dissipation pipes (312), with both ends of the multiple heat dissipation pipes (312) connected to two support pipes (311), and the multiple heat dissipation pipes (312) are arranged in sequence along the radial direction of the main shaft (1).

5. The heating core structure of the tubular dryer as described in claim 4, characterized in that, A fixing bracket (32) for fixing the heat dissipation pipe (312) is also provided between the two support pipes (311), and the fixing bracket (32) is fixedly installed on the main shaft (1).

6. The heating core structure of the tubular dryer as described in claim 5, characterized in that, The mounting bracket (32) is fixedly installed with a plurality of sleeves (321) for installing the heat dissipation pipe (312), and the heat dissipation pipe (312) is slidably disposed inside the sleeve (321).

7. The heating core structure of the tubular dryer as described in claim 5, characterized in that, Two L-plates (33) for fixing the fixing frame (32) are fixedly installed on the main shaft (1). The L-plate (33) includes a first wing plate (331) inserted into the main shaft (1) and a second wing plate (332) bent on the first wing plate (331). The second wing plates (332) on the two L-plates (33) are arranged opposite to each other to form a slot for installing the fixing frame (32).

8. The heating core structure of the tubular dryer as described in claim 4, characterized in that, The sidewall at the end of the heat sink (312) protrudes outward to form a plurality of convex rings (34), and the plurality of convex rings (34) are spaced apart on the heat sink (312) along the length direction of the heat sink (312).

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