Heat transfer device for a lime powder flow cooling machine

Abstract

The application provides a heat transfer device of a heavy ash powder flow cooling alkali machine, which comprises a screw rod and a blade, the inner cavity of the blade is communicated with the inner cavity of the screw rod, a pipe fitting is arranged on the blade, and movable blocks are screwed into the two ends of the pipe fitting. The application can change the contact area between the inner wall of the two ends of the pipe fitting and the material by changing the screwing depth of the movable blocks in the pipe fitting, so that the heat exchange efficiency can be further improved.

Description

Technical Field

[0001] This application relates to the field of alkali cooling machine technology, and in particular to a heat transfer device for a heavy ash powder alkali cooling machine. Background Technology

[0002] Cooling alkali is a crucial step in the alkali production process, and its efficiency directly impacts production effectiveness. Currently, the commonly used alkali cooler is a conveying machine that uses a screw for material transport. It achieves heat exchange during the transport of powdered alkali through a screw shaft with a built-in water-cooling structure. However, the screw blades in existing alkali coolers cannot adequately agitate the material, resulting in poor heat transfer.

[0003] Patent CN203295211U discloses a screw-type internal water-cooled alkali cooler, which improves heat exchange efficiency by setting water flow channels in the inner cavity of the blades.

[0004] However, in the above-disclosed method, the contact area between the blades and the material cannot be adjusted, making it difficult to further improve the heat exchange efficiency. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a heat transfer device for a heavy ash powder cooling alkali machine, so as to improve the heat exchange efficiency by changing the contact area.

[0006] The technical solution of this application is as follows:

[0007] This application provides a heat transfer device for a heavy ash powder cooling alkali machine, including a screw and blades. The inner cavity of the blades is connected to the inner cavity of the screw. A pipe is threaded through the blades, and movable blocks are screwed into both ends of the pipe.

[0008] By adopting the technical solution of this application, the contact area between the inner wall of the pipe and the material at both ends of the pipe can be changed by changing the depth of the movable block in the pipe fitting, thereby further improving the heat exchange efficiency.

[0009] In some implementations, the blades are provided with through holes for inserting pipe fittings.

[0010] In some implementations, the diameter of the through hole is equal to the outer diameter of the pipe fitting.

[0011] In some implementations, the fittings are sealed to the blades.

[0012] In some implementations, the axis of the fitting is arranged parallel to the axis of the screw.

[0013] In some implementations, the end of the fitting is flush with the blade.

[0014] In some implementations, the fittings are evenly distributed along the circumference of the blades.

[0015] In some implementations, the fittings are spaced radially along the blades.

[0016] In some implementations, the outer end face of the active block is provided with a slot.

[0017] In some implementations, the active blocks are arranged symmetrically inside the pipe fitting. Attached Figure Description

[0018] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the heat transfer device of an existing alkali cooling machine;

[0020] Figure 2 This is a schematic diagram of a heat transfer device according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the distribution of the pipe fittings on the blade according to an embodiment of this application;

[0022] Figure label:

[0023] 10. Screw;

[0024] 20. Blade; 21. Pipe fitting; 22. Moving block; 23. Slot. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0026] In related technologies, alkali cooling is one of the important steps in the alkali production process, and its efficiency directly affects production efficiency. Currently, the commonly used alkali cooling machine is a conveying machine that uses a screw for material transport. It achieves heat exchange during the conveying of powdered alkali through a screw shaft with a built-in water-cooling structure. However, the screw blades of existing alkali cooling machines cannot adequately agitate the material, resulting in poor heat transfer.

[0027] Patent CN203295211U discloses a screw-type internal water-cooled alkali cooler, which improves heat exchange efficiency by setting water flow channels in the inner cavity of the blades.

[0028] However, in the above-disclosed method, the contact area between the blades and the material cannot be adjusted, making it difficult to further improve the heat exchange efficiency.

[0029] In view of this, the purpose of this embodiment is to provide a heat transfer device for a heavy ash powder cooling alkali machine, so as to improve the heat exchange efficiency by changing the contact area.

[0030] Please see Figures 1-3 In this embodiment, a heat transfer device for a heavy ash powder cooling alkali machine includes a screw 10 and blades 20. The inner cavity of the blades 20 is connected to the inner cavity of the screw 10. A pipe 21 is threaded through the blades 20, and movable blocks 22 are screwed into both ends of the pipe 21.

[0031] By adopting the technical solution of this embodiment, the contact area between the inner wall of the pipe fitting 21 and the material at both ends can be changed by changing the screwing depth of the movable block 22 in the pipe fitting 21, thereby further improving the heat exchange efficiency.

[0032] It should be noted that this embodiment is a structural improvement on the blade structure disclosed in the patent with publication number CN203295211U. Compared with the existing blade structure, the blade 20 in this embodiment is equipped with a tube 21, and a movable block 22 is screwed into the tube 21. By changing the screwing depth of the movable block 22 inside the tube 21, the contact area between the inner wall of the tube 21 end and the material can be changed, thereby achieving the purpose of improving heat exchange efficiency by changing the contact area.

[0033] In this embodiment, the blade 20 is fixed to the outside of the screw 10, and the inner cavity of the screw 10 is connected to the inner cavity of the blade 20. A through hole is provided on the blade 20 for inserting the pipe fitting 21, and the diameter of the through hole is equal to the outer diameter of the pipe fitting 21. Both ends of the pipe fitting 21 are welded to the blade 20 to ensure a sealed connection between the pipe fitting 21 and the blade 20. The axis of the pipe fitting 21 is arranged parallel to the axis of the screw 10.

[0034] It should be noted that the end of the pipe fitting 21 is flush with the blade 20, the pipe fitting 21 is evenly distributed along the circumference of the blade 20, the pipe fitting 21 is distributed at intervals along the radial direction of the blade 20, the movable block 22 is symmetrically arranged inside the pipe fitting 21, and a slot 23 is provided on the outer end face of the movable block 22. The slot 23 is used to hold tools such as screwdrivers, so as to facilitate the rotation of the movable block 22.

[0035] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A heat transfer device for a heavy ash powder cooling alkali mill, comprising a screw and blades, characterized in that, The inner cavity of the blade is connected to the inner cavity of the screw, and a tube is threaded through the blade, with movable blocks screwed into both ends of the tube.

2. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 1, characterized in that, The blade is provided with a through hole for inserting the tube.

3. The heat transfer device for the heavy ash powder cooling alkali machine as described in claim 2, characterized in that, The diameter of the through hole is equal to the outer diameter of the pipe fitting.

4. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 3, characterized in that, The pipe fitting is sealed to the blade.

5. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 4, characterized in that, The axis of the pipe fitting is arranged parallel to the axis of the screw.

6. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 5, characterized in that, The end of the pipe fitting is flush with the blade.

7. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 6, characterized in that, The tubular components are evenly distributed along the circumference of the blades.

8. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 7, characterized in that, The tubular components are distributed radially at intervals along the blades.

9. The heat transfer device of the heavy ash powder cooling alkali machine as described in claim 8, characterized in that, The outer end face of the movable block is provided with a slot.

10. The heat transfer device for the heavy ash powder cooling alkali machine as described in claim 9, characterized in that, The movable blocks are arranged symmetrically inside the pipe fitting.

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