Spiral conveying structure and vertical drying machine thereof

Abstract

The utility model belongs to the technical field of dryers, and particularly relates to a spiral conveying structure and a vertical dryer thereof. The device comprises an air blowing assembly suitable for blowing air to convey materials; the carrying blade is suitable for conveying materials; wherein the air blowing assembly and the carrying blades are sequentially distributed in the conveying direction of the materials, so that the air blowing assembly blows the materials at the inlet of the drying machine to the carrying blades. By arranging the air blowing assembly and the carrying blades, when the spiral conveying structure rotates, the air blowing assembly blows materials located at the bottom of the drying machine to the carrying blades, so that the space of the bottom of the drying machine is vacated, and continuous feeding of the interior of the drying machine is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of drying technology, and particularly relates to a spiral conveying structure and its vertical dryer. Background Technology

[0002] A spiral dryer is a drying device that utilizes spiral motion for drying, and it is widely used in the drying of various materials. Its working principle is mainly based on the spiral shaft conveying moist material from the inlet to the outlet, where the material is heated inside the drying drum to evaporate the moisture, thereby achieving the drying effect.

[0003] As granules or powders are conveyed inside the screw dryer, they are thrown outwards under the action of centrifugal force and fall to the bottom of the dryer. This causes the material to continuously accumulate at the bottom of the dryer during the drying process, blocking the feed port and affecting subsequent feeding.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] This disclosure provides at least one spiral conveying structure and its vertical dryer.

[0006] In a first aspect, embodiments of the present disclosure provide a spiral conveying structure, including: a blower assembly adapted to blow air to convey materials;

[0007] Handling blades suitable for conveying materials;

[0008] The blower assembly and conveyor blades are arranged sequentially along the material conveying direction so that the blower assembly blows the material at the dryer inlet to the conveyor blades.

[0009] In one alternative embodiment, the blower assembly includes a plurality of blower blades, the blower blades being arc-shaped and the concave surface of the blower blades being oriented toward the direction of the conveying blades.

[0010] In one alternative embodiment, the blower blades are uniformly distributed along a spiral direction.

[0011] In one optional embodiment, the blower assembly includes a plurality of blower layers, which are arranged sequentially along the axial direction;

[0012] The blower layer includes several blower blades, which are evenly distributed circumferentially.

[0013] In one alternative embodiment, the spiral conveyor structure further includes a main shaft, a blower assembly, and conveying blades coaxially mounted on the outside of the main shaft.

[0014] Secondly, this disclosure also provides a spiral conveying structure, including: a main shaft, on the outer wall of which a blower assembly and conveying blades are mounted, the blower assembly and conveying blades being distributed sequentially along the material conveying direction;

[0015] The blower assembly includes several blower blades, which are arc-shaped and have their concave surfaces facing the direction of the conveying blades.

[0016] In one alternative embodiment, the blower blades are uniformly distributed along a spiral direction.

[0017] Thirdly, this disclosure also provides a vertical dryer, including the spiral conveying structure as described above; the vertical dryer further includes a drying drum, and the two ends of the spiral conveying structure are rotatably connected to the drying drum.

[0018] In one alternative embodiment, the conveying blade includes a conveying section and an extension section;

[0019] The blade diameter of the extended section is larger than that of the blade diameter of the conveying section.

[0020] In one optional embodiment, the drying drum further includes a feed inlet at the bottom and a discharge outlet at the top.

[0021] The beneficial effect of this utility model is that by setting up a blower assembly and conveying blades, when the screw conveyor structure rotates, the blower assembly blows the material located at the bottom of the dryer onto the conveying blades, thereby freeing up space at the bottom of the dryer and facilitating continuous feeding inside the dryer.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1A perspective view of a vertical dryer provided in an embodiment of this disclosure;

[0026] Figure 2 A cross-sectional view of a vertical dryer provided in an embodiment of this disclosure;

[0027] Figure 3 This is a schematic diagram of a spiral conveying structure provided in an embodiment of the present disclosure.

[0028] In the picture:

[0029] 1. Blower assembly; 11. Blower fan blades; 12. Blower layer;

[0030] 2. Transport blades; 21. Conveying section; 22. Extension section;

[0031] 3. Spindle;

[0032] 4. Drying drum; 41. Feed inlet; 42. Discharge outlet. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Research has found that when granular or powdered materials are conveyed inside a screw dryer, they are thrown outwards under the action of centrifugal force and fall to the bottom of the dryer. This causes the material to continuously accumulate at the bottom of the dryer during the drying process, blocking the feed port and affecting subsequent feeding.

[0035] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0036] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] Based on the above research, and referring to Figure 3 This disclosure provides a spiral conveying structure, including a main shaft 3, and conveying blades 2 and a blower assembly 1 sequentially mounted on the outer wall of the main shaft 3. Rotation of the main shaft 3 drives the conveying blades 2 and the blower assembly 1 to rotate synchronously. When the blower assembly 1 rotates, it blows air, thereby conveying materials by airflow. When the conveying blades 2 rotate, they are conveyed to transport materials.

[0039] Reference Figure 3 In some embodiments, the main shaft 3 is vertically arranged. Within the enclosed space, materials tend to accumulate at the bottom due to gravity. Therefore, the main shaft 3 typically drives the conveying blades 2 and the blower assembly 1 to transport the material upwards. Furthermore, the blower assembly 1 and the conveying blades 2 are distributed sequentially along the material conveying direction, i.e., the blower assembly 1 is positioned below the conveying blades 2. When the main shaft 3 rotates to a certain speed, the blower assembly 1 generates a stable airflow to transport the material towards the conveying blades 2. Preferably, the blower assembly 1 is located at the dryer inlet. After the material enters the dryer through the inlet, the blower assembly 1 blows the material at the dryer inlet onto the conveying blades 2. Through this arrangement, the blower assembly 1 quickly transports the material at the dryer inlet to the conveying blades 2, thereby preventing material accumulation at the inlet, which would reduce the feeding speed and hinder continuous feeding.

[0040] Reference Figure 3 In some embodiments, the blower assembly 1 includes a plurality of blower blades 11, which are arc-shaped and have their concave surfaces facing the transport blades 2. With the above arrangement, when the main shaft 3 rotates, the blower blades 11 guide the air to flow in a specific direction through the arc-shaped surfaces, thereby generating pressure when the air flows on the blade surface, forming an airflow toward the transport blades 2.

[0041] Reference Figure 3 In some embodiments, the blower blades 11 are evenly distributed along the spiral direction to ensure that a stable airflow is formed when the blower blades 11 rotate.

[0042] Reference Figure 2 In some embodiments, the blower assembly 1 includes a plurality of blower layers 12, which are arranged sequentially along the axial direction. Each blower layer 12 includes a plurality of blower blades 11, which are evenly distributed circumferentially. By setting multiple blower layers 12, the effect of each blower layer 12 on the air is superimposed, increasing the wind force and improving the material conveying capacity.

[0043] Reference Figure 3In some embodiments, the blower blades 11 are evenly distributed along the spiral direction, and multiple blower blades 11 are continuously arranged along the spiral direction so that when the main shaft 3 rotates, a continuous airflow can be formed, ensuring that the wind force pushing the material at different heights is consistent.

[0044] Reference Figure 1 This disclosure also provides a vertical dryer, including the spiral conveyor structure shown above. The vertical dryer further includes a drying drum 4, with both ends of the spiral conveyor structure rotatably connected to the drying drum 4. Specifically, both ends of the main shaft 3 are rotatably connected to the top and bottom of the drying drum 4, respectively. Alternatively, the dryer can be connected to an external motor, with the main shaft 3 driven by the motor to rotate.

[0045] Reference Figure 2 In at least one embodiment, the conveying blade 2 includes a conveying section 21 and an extension section 22. The blade diameter of the extension section 22 is larger than that of the conveying section 21. Preferably, the extension section 22 is located on the side close to the blower blade 11. When the main shaft 3 rotates, the material on the conveying blade 2 is lifted, and at the same time, some of the material is thrown outward under the action of centrifugal force, and then falls off the conveying blade 2. By setting the extension section 22, the material carrying capacity is enhanced, the probability of material falling is reduced, and it helps to quickly convey materials in conjunction with the blower blades to free up space at the dryer inlet.

[0046] Reference Figure 1 In at least one embodiment, the drying drum 4 further includes a feed inlet 41 at the bottom and a discharge outlet 42 at the top. Material can enter the drying drum 4 through the feed inlet 41 and be discharged through the discharge outlet 42.

[0047] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification; its technical scope must be determined by the scope of the claims.

Claims

1. A screw conveyor structure, characterized by, The screw conveying structure comprises: a blast assembly (1) adapted to blow air to convey materials; a carrying blade (2) adapted to convey materials; wherein the blast assembly (1) and the carrying blade (2) are sequentially distributed along the conveying direction of the materials, so that the blast assembly (1) blows the materials at the inlet of the dryer to the carrying blade (2).

2. The screw conveying structure according to claim 1, wherein the blast assembly (1) comprises a plurality of blast fan blades (11), the blast fan blades (11) are arc-shaped, and the concave surfaces of the blast fan blades (11) are arranged towards the carrying blade (2).

3. The screw conveying structure according to claim 2, wherein the blast fan blades (11) are uniformly distributed along the spiral direction.

4. The screw conveying structure according to claim 1, wherein the blast assembly (1) comprises a plurality of blast layers (12), the blast layers (12) are sequentially arranged along the axial direction; the blast layer (12) comprises a plurality of blast fan blades (11), the blast fan blades (11) are uniformly distributed along the circumferential direction.

5. The screw conveying structure according to claim 1, further comprising a main shaft (3), the blast assembly (1) and the carrying blade (2) are coaxially installed outside the main shaft (3). The screw conveying structure comprises:

6. A screw conveyor structure, characterized by, a main shaft (3), an outer wall of the main shaft (3) is provided with a blast assembly (1) and a carrying blade (2), the blast assembly (1) and the carrying blade (2) are sequentially distributed along the conveying direction of the materials; wherein the blast assembly (1) comprises a plurality of blast fan blades (11), the blast fan blades (11) are arc-shaped, and the concave surfaces of the blast fan blades (11) are arranged towards the carrying blade (2).

7. The screw conveying structure according to claim 6, wherein the blast fan blades (11) are uniformly distributed along the spiral direction. The vertical dryer comprises the screw conveying structure according to any one of claims 1-7; 8. A vertical dryer, characterized by the vertical dryer further comprises a drying barrel (4), and two ends of the screw conveying structure are rotationally connected with the drying barrel (4).

9. The vertical dryer according to claim 8, wherein the carrying blade (2) comprises a conveying section (21) and an expanding section (22); the blade diameter of the expanding section (22) is greater than the blade diameter of the conveying section (21).

10. The vertical dryer according to claim 8, wherein the drying barrel (4) further comprises a bottom and a top, and the bottom and the top are respectively provided with a feeding port (41) and a discharging port (42). ​

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