Cooling helical blade

Abstract

The utility model relates to a cooling spiral blade which comprises a shaft body and a cooling blade, the shaft body is hollow to form a through hole; the cooling blade is arranged on the shaft body, and the cooling blade is spirally wound on the shaft body; wherein in the length direction of the cooling blade, the cooling blade recess and the shaft body are encircled to form a cooling cavity; a connecting hole is formed in the shaft body; and the connecting hole is communicated with the through hole and the cooling cavity. The cooling blades are driven to rotate synchronously when the shaft body rotates, and cooling media injected into the through holes flow into the cooling cavity along the connecting holes. And through the arrangement of the cooling cavity and the through holes, the heat exchange area between the cooling medium and the material is greatly increased, and the cooling efficiency of the cooling spiral blade is improved. Meanwhile, the thickness of the spiral pressing sheet is increased through the cooling cavity, the cooling time of the materials by the cooling spiral blade is prolonged, and the cooling effect of the materials is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling screw conveyors, in particular to a cooling spiral blade. Background Art

[0002] The cooling screw conveyor can cool the material while conveying it, reducing the processing time of the material that needs to be cooled and improving production efficiency.

[0003] Cooling performance is a key performance indicator for cooling screw conveyors. To improve cooling performance, the cooling area can be increased or the cooling time can be extended. During production, the desired cooling effect can be achieved by extending the length of the cooling screw conveyor or connecting multiple cooling screw conveyors in series. However, such a setup is costly and takes up a lot of space.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a cooling spiral blade to improve the cooling effect of the cooling spiral blade.

[0006] The technical solution of the utility model is as follows:

[0007] A cooling spiral blade, wherein the cooling spiral blade comprises a shaft and a cooling blade;

[0008] The shaft body is hollowed to form a through hole;

[0009] The cooling blades are arranged on the shaft, and the cooling blades are spirally wound around the shaft;

[0010] Wherein, along the length direction of the cooling blade, the cooling blade recess and the shaft body together form a cooling cavity; a connecting hole is opened on the shaft body; and the connecting hole communicates with the through hole and the cooling cavity.

[0011] A further technical solution is that round steel is provided in the cooling cavity; the round steel is connected to the cooling blades on the opposite side of the cooling cavity.

[0012] A further technical solution is that a web is provided in the cooling cavity; a sealing plate is provided on the outer surface of the cooling blade; one end of the round steel is connected to the web, and the other end of the round steel passes through the cooling blade and is connected to the sealing plate.

[0013] A further technical solution is that the web and the sealing plate are bent and fit the cooling blades.

[0014] A further technical solution is that six round steels are arranged in a circle around the shaft.

[0015] A further technical solution is that connecting holes are respectively provided at both ends of the length of the shaft.

[0016] Its further technical solution is that the cooling blade includes a push panel, a back material panel and a side sealing plate; the push panel and the back material panel are connected to the shaft body, and the side sealing plate connects the push panel and the back material panel; the push panel, the back material panel, the side sealing plate and the shaft body are surrounded to form a cooling cavity.

[0017] A further technical solution is that the sealing plate is arranged on the backing material panel.

[0018] A further technical solution is that the shaft and the cooling blades are connected by welding.

[0019] The beneficial technical effects of the present utility model are as follows:

[0020] (1) The cooling spiral blades in the present invention have a hollow shaft with a through hole, and the cooling blades and the shaft together form a cooling cavity, and the cooling cavity and the through hole are connected through a connecting hole. When the shaft rotates, the cooling blades are driven to rotate synchronously, and a cooling medium is injected into the through hole, and the cooling medium flows into the cooling cavity along the connecting hole. At this time, the cooling spiral blades transport the material, and the cooling medium can exchange heat with the material through the outer surface of the shaft and the cooling blades. The setting of the cooling cavity and the through hole greatly increases the heat exchange area between the cooling medium and the material, thereby improving the cooling efficiency of the cooling spiral blades. At the same time, the cooling cavity increases the thickness of the spiral pressing sheet, squeezes the flow space of the material, and thereby prolongs the time for the material to be cooled by the cooling spiral blades, further improving the cooling effect of the material.

[0021] (2) Furthermore, round steel is provided to connect the cooling blades on the opposite side of the cooling chamber. The round steel increases the structural strength of the cooling blades, thereby improving the durability of the cooling fins, reducing failures due to material fatigue, thereby reducing maintenance and replacement costs, and improving the durability of the cooling spiral blades. In addition, deformation of the cooling blades will affect their conveying performance, cause vibration, and accelerate material fatigue. The provision of round steel can reduce the deformation of the cooling blades.

[0022] (3) Furthermore, six round steel bars are arranged in a circle around the shaft. The multiple round steel bars support the cooling cavity, ensure the structural strength of the cooling blades, and minimize the deformation of the cooling blades to ensure the service life of the cooling blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the main structure of the cooling spiral blade of the present invention is shown.

[0024] Figure 2 A side structural schematic diagram of the cooling spiral blade of the present invention is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Shaft; 11. Through hole; 12. Connecting hole; 2. Cooling blades; 21. Pushing panel; 22. Back panel; 23. Side sealing plate; 24. Cooling chamber; 3. Round steel; 4. Web plate; 5. Sealing plate. DETAILED DESCRIPTION

[0027] To make the purposes, features, and advantages of this utility model more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not intended to limit the conditions for the implementation of this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, as long as they do not affect the efficacy and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0028] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are defined as indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0029] Figure 1 The schematic diagram of the cooling spiral blade of the utility model is shown. Figure 1The cooling spiral blade includes a shaft body 1 and a cooling blade 2. The shaft body 1 is hollow to form a through-hole 11. The cooling blade 2 is arranged on the shaft body 1, and the cooling blade 2 is spirally wound around the shaft body 1. Among them, along the length direction of the cooling blade 2, the cooling blade 2 is recessed and enclosed by the shaft body 1 to form a cooling cavity 24. A connecting hole 12 is provided on the shaft body 1. The connecting hole 12 connects the cooling cavity 24 and the through-hole 11. When the shaft body 1 rotates, it drives the cooling blade 2 to rotate synchronously, and a cooling medium is injected into the through-hole 11. The cooling medium flows into the cooling cavity 24 along the connecting hole 12. At this time, the cooling spiral blade transports the material, and the cooling medium can exchange heat with the material through the outer surface of the shaft body 1 and the cooling blade 2. Through the setting of the cooling cavity 24 and the through-hole 11, the heat exchange area between the cooling medium and the material is greatly increased, thereby improving the cooling efficiency of the cooling spiral blade. At the same time, the cooling cavity 24 increases the thickness of the spiral pressing sheet, squeezes the flow space of the material, and thereby prolongs the time for the material to be cooled by the cooling spiral blade, further improving the cooling effect of the material.

[0030] Figure 2 The side view of the cooling spiral blade of the present invention is shown. Figure 1 and Figure 2 A round steel bar 3 is provided in the cooling cavity 24. The round steel bar 3 connects the cooling blades 2 on the opposite side of the cooling cavity 24. The round steel bar 3 increases the structural strength of the cooling blades 2, thereby improving the durability of the cooling fins, reducing failures due to material fatigue, thereby reducing maintenance and replacement costs, and improving the durability of the cooling spiral blades. In addition, deformation of the cooling blades 2 will affect their conveying performance, cause vibration, and accelerate material fatigue. The provision of the round steel bar 3 can reduce the deformation of the cooling blades 2.

[0031] Preferably, a web 4 is provided within the cooling chamber 24. A sealing plate 5 is provided on the outer surface of the cooling blade 2. One end of a round steel bar 3 is connected to the web 4, and the other end of the round steel bar 3 passes through the cooling blade 2 and connects to the sealing plate 5. The round steel bar 3 connects the pusher panel 21 and the backing panel 22 by connecting the web 4 and the sealing plate 5. The web 4 and the sealing plate 5 are bent and conform to the cooling blade 2, dissipating the stress transmitted by the web 4 and the sealing plate 5.

[0032] More preferably, six round steel bars 3 are arranged in a circle around the shaft 1. The multiple round steel bars 3 support the cooling cavity 24, ensure the structural strength of the cooling blade 2, and minimize the deformation of the cooling blade 2 to ensure the service life of the cooling blade 2.

[0033] Please refer to Figure 1 The shaft body 1 is provided with connecting holes 12 at both ends of the length, so that both ends of the cooling cavity 24 can be connected to the through hole 11 of the shaft body 1. This avoids the existence of dead corners at both ends of the cooling cavity 24, where the cooling medium accumulates and is difficult to flow, affecting the cooling efficiency of the cooling cavity 24.

[0034] Preferably, the cooling blade 2 includes a push panel 21, a back panel 22, and side sealing plates 23. The push panel 21 and the back panel 22 are connected to the shaft 1, and the side sealing plates 23 connect the push panel 21 and the back panel 22. The push panel 21, the back panel 22, the side sealing plates 23, and the shaft 1 surround and form a cooling chamber 24. A sealing plate 5 is disposed on the back panel 22. The sealing plate 5 prevents leakage and hinders the material from sliding on the surface of the cooling panel.

[0035] More preferably, the shaft 1 and the cooling blades 2 are welded. The welded connection is strong enough to withstand heavy loads, ensuring the structural strength of the cooling spiral blades. Furthermore, the welded connection allows for a complete seal of the pressure vessel, preventing the cooling medium within the cooling chamber 24 from leaking and contaminating the material.

[0036] The specific workflow of this utility model is as follows:

[0037] When conveying and cooling materials through the cooling spiral blades, first inject the cooling medium into the through hole 11, and then rotate the shaft body 1. The rotation of the shaft body 1 drives the cooling blades 2 to rotate synchronously. During this process, the cooling medium in the through hole 11 flows into the cooling cavity 24 along the connecting hole 12 under the action of centrifugal force. The cooling medium flowing into the cooling cavity 24 flows to the end of the cooling cavity 24 and then is discharged along the connecting hole 12 and the through hole 11. At the same time, as the cooling blades 2 rotate, the spiral cooling blades 2 push the material to move along the axial direction of the shaft body 1, and the cooling medium exchanges heat with the material through the shaft body 1 and the cooling blades 2. As the cooling spiral blades rotate, they continue to convey and cool the material.

[0038] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. Cooling spiral blade, characterized in that, The cooling spiral blade includes a shaft and a cooling blade; The shaft body is hollowed to form a through hole; The cooling blades are arranged on the shaft, and the cooling blades are spirally wound around the shaft; Wherein, along the length direction of the cooling blade, the cooling blade recess and the shaft body together form a cooling cavity; a connecting hole is opened on the shaft body; and the connecting hole communicates with the through hole and the cooling cavity.

2. The cooling spiral blade according to claim 1, wherein: Round steel is arranged in the cooling cavity; the round steel is connected to the cooling blades on the opposite side of the cooling cavity.

3. The cooling spiral blade according to claim 2, characterized in that: A web is provided in the cooling cavity; a sealing plate is provided on the outer surface of the cooling blade; one end of the round steel is connected to the web, and the other end of the round steel passes through the cooling blade and is connected to the sealing plate.

4. The cooling spiral blade according to claim 3, wherein: The web and the cover plate are bent and fit the cooling blades.

5. The cooling spiral blade according to claim 2, wherein: Six round steel bars are arranged in a circle around the shaft.

6. The cooling spiral blade according to claim 1, wherein: Connecting holes are respectively provided at both ends of the shaft body.

7. The cooling spiral blade according to claim 3, characterized in that: The cooling blade includes a push panel, a back panel and a side sealing plate; the push panel and the back panel are connected to the shaft, and the side sealing plate connects the push panel and the back panel; the push panel, the back panel, the side sealing plate and the shaft form a cooling cavity.

8. The cooling spiral blade according to claim 7, characterized in that: The sealing plate is arranged on the backing material panel.

9. The cooling spiral blade according to claim 1, wherein: The shaft body and the cooling blades are welded together.

Images