Heating device for rapidly and uniformly heating powder
By setting a hollow rotating shaft and a stirring head inside the hopper, with air outlets on the stirring head, and combining this with a heating device on the inner wall of the hopper to form a three-stage heating structure, the problems of uneven and inefficient powder heating are solved, achieving rapid, uniform, and efficient powder heating.
Patent Information
- Application Number
- CN202520370151.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In existing technologies, powder heating is uneven and inefficient, especially for powders with poor flowability or that are prone to agglomeration, which are not well heated in the hopper.
A hollow rotating shaft and a stirring head are installed inside the hopper. An air outlet is provided on the rotating shaft. Hot air is output through the air outlet for heating, and a three-section heating structure is formed by combining the hopper inner wall heating device.
It achieves rapid and uniform heating of powder, improves heating efficiency, prevents powder agglomeration, and ensures that the powder in the hopper is fully heated.
Smart Images
Figure CN223765180U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a powder heating device, and more particularly to a heating device for rapidly and uniformly heating powder in a hopper. Background Technology
[0002] Because powders with poor flowability or high solids content are prone to agglomeration, and the powder output from the hopper needs to reach the required temperature, it is necessary to break up the agglomeration and heat the powder. Current methods involve installing a heating device on the inner wall of the hopper and a stirring device at the discharge port. The stirring device agitates and tumbles the powder, ensuring continuous contact between the powder and the heating device on the inner wall of the hopper, thus achieving the purpose of heating the powder. However, this heating method suffers from drawbacks: the heating device can only directly heat the powder in contact with the inner wall, resulting in low overall heating efficiency and uneven heating. Utility Model Content
[0003] The purpose of this invention is to address the aforementioned problems by providing a heating device for rapidly and uniformly heating powder materials. This heating device employs a hollow rotating shaft and a stirring head installed at the outlet inside the hopper; and air outlets are provided on the stirring head and / or rotating shaft, allowing hot air to be output through the air outlets during rotation. This achieves simultaneous stirring and breaking up of the powder materials while simultaneously heating the powder materials around the rotating shaft and / or stirring head with hot air, thus achieving rapid and uniform heating of the powder materials.
[0004] The objective of this utility model can be achieved using the following technical solutions:
[0005] A heating device for rapidly and uniformly heating powder, comprising:
[0006] The stirring head is used to propel the powder.
[0007] The rotating shaft is used to drive the stirring head to rotate;
[0008] The rotating shaft is hollow; the rotating shaft and / or the stirring head have air outlets; hot air is introduced into the rotating shaft and heats the powder through the air outlets.
[0009] As a preferred embodiment, the stirring head has an air outlet, and hot air is input to the stirring head through the rotating shaft and output from the air outlet to heat the powder around the stirring head.
[0010] As a preferred embodiment, the rotating shaft has an air outlet, through which hot air is introduced and output from the air outlet to heat the powder around the rotating shaft.
[0011] As a preferred embodiment, both the stirring head and the rotating shaft have air outlets. Hot air is introduced into the rotating shaft and output through the air outlets on the rotating shaft and the stirring head to heat the powder around the rotating shaft and the stirring head.
[0012] As a preferred embodiment, the stirring head and the rotating shaft are located inside the hopper, and a heating device is provided on the inner wall of the hopper to heat the powder on the inner wall.
[0013] As a preferred embodiment, the heating device is a far-infrared heater, which heats the inner wall of the hopper; or the inner wall of the hopper has a second air outlet, through which hot air is introduced into the hopper.
[0014] As a preferred embodiment, the outer surface of the stirring head is provided with multiple contact surfaces, which drive the powder to move repeatedly along the axial direction of the rotating shaft to smooth the powder.
[0015] As a preferred embodiment, the cross-section of the stirring head is rhomboid, forming four contact surfaces for smoothing the powder.
[0016] As a preferred embodiment, the two corners of the long diagonal of the rhombus shape are sharp angles, which creates a sharp edge on the side of the stirring head.
[0017] As a preferred embodiment, the lower part of the hopper adopts a double-layer plate structure, which includes an inner plate that is in contact with the powder and an outer plate that is separated from the inner plate. A cavity is formed between the inner plate and the outer plate to form a vacuum insulation structure.
[0018] Implementing this utility model has the following beneficial effects:
[0019] 1. During operation, hot air flows into the mixing head through the rotating shaft and then exits through the air outlet on the mixing head. As the rotating shaft drives the mixing head to rotate, the hot air exiting from the air outlet directly blows onto the powder around the mixing head, thus achieving the purpose of heating the powder over a large area. At the same time, the hot air heats the rotating shaft, and the heat indirectly heats the powder around the rotating shaft through its outer wall. Because the mixing head comes into contact with a large amount of powder during rotation, and the mixing head breaks up any clumps of powder, the hot air can heat a large area of powder simultaneously, resulting in high heating efficiency and uniform heating.
[0020] 2. When this structure is installed at the outlet of the hopper, a heating device is installed on the inner wall of the hopper. This heating device heats a certain thickness of powder on the inner wall, forming a three-stage heating structure. The first stage involves the heating device on the inner wall of the hopper heating a certain thickness of powder. The second stage involves hot air from the air outlet of the stirring head directly blowing onto the powder around the stirring head. The third stage involves hot air passing through the outer wall of the rotating shaft to heat the powder around the rotating shaft. This three-stage heating structure can heat the powder in the hopper more quickly and comprehensively, achieving uniform and efficient heating.
[0021] 3. During the rotation of the contact surfaces driven by the rotating shaft, multiple contact surfaces of the stirring head simultaneously contact the powder and propel it. By controlling the direction of the rotating shaft, the powder is repeatedly smoothed, preventing accumulation on the surface and inside of the powder. The stirring head has a rhomboid cross-section, forming four contact surfaces for smoothing the powder. As the rotating shaft drives the stirring head to rotate, the four contact surfaces continuously push the powder, quickly smoothing it. Air outlets can be opened on all four contact surfaces, increasing the heating area and allowing all four contact surfaces to simultaneously heat the powder they contact, achieving rapid and uniform heating.
[0022] 4. When the rotating shaft drives the stirring head to rotate, the two sharp edges break up the clumps of powder, thus quickly breaking them up and improving the efficiency of breaking up clumps. Compared to the traditional structure with a circular stirring rod on the outer circumference of the rotating shaft, which has poor clump-breaking effect, this structure, due to the sharp cutting edges, can apply great pressure to the clumps of powder, causing them to be quickly broken up and effectively preventing powder from clumping. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of the heating device of this utility model, which is installed inside the hopper for rapid and uniform heating of powder.
[0025] Figure 2 This is a schematic diagram of the heating device for rapidly and uniformly heating powder and the three-section heating structure formed by the heating device.
[0026] Figure 3This is a schematic diagram of the heating device of this utility model for rapidly and uniformly heating powder.
[0027] Figure 4 yes Figure 3 Side view.
[0028] Figure 5 yes Figure 3 A magnified view of part A.
[0029] Figure 6 yes Figure 3 A magnified view of part B. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Example 1
[0032] Reference Figures 1 to 5This embodiment relates to a heating device, including a stirring head 1 for moving powder, and a rotating shaft 2 for driving the stirring head 1 to rotate. The rotating shaft 2 is a hollow structure, while the stirring head 1 can be a solid or hollow structure. An air outlet 21 is provided on the rotating shaft 2 and / or the stirring head 1. Hot air is introduced into the rotating shaft 2, and the hot air heats the powder through the air outlet 21. This heating device includes the following four structures: 1. The rotating shaft 2 is designed as a hollow structure, and hot air is introduced into the rotating shaft 2. The stirring head 1 is also hollow, and an air outlet 21 is provided on the stirring head 1. In this scheme, the stirring head 1 has the air outlet 21, hot air is introduced into the stirring head 1 through the rotating shaft 2, and the hot air is output from the air outlet 21 of the stirring head 1 to heat the powder around the stirring head 1. During operation, hot air flows into the stirring head 1 through the rotating shaft 2, and then the hot air is output through the air outlet on the stirring head 1. When the rotating shaft 2 drives the stirring head 1 to rotate, the hot air output from the air outlet of the stirring head 1 directly blows the powder around the stirring head 1, thereby achieving the purpose of heating the powder over a large area. At the same time, the hot air heats the rotating shaft 2, and the heat indirectly heats the powder around the rotating shaft 2 through the outer wall of the rotating shaft 2. Because the stirring head 1 comes into contact with a large amount of powder during rotation, and the stirring head 1 breaks up any clumps of powder, the hot air can heat a large area of powder simultaneously, resulting in high heating efficiency and uniform heating. When this structure is installed at the outlet of the hopper 3, a heating device 4 can be installed on the inner wall of the hopper 3. The heating device heats the powder of a certain thickness on the inner wall, forming a three-stage heating structure. The first stage is: the heating device on the inner wall of the hopper 3 heats the powder of a certain thickness on the inner wall; the second stage is: the hot air output from the air outlet 21 of the stirring head 1 directly blows the powder around the stirring head 1; the third stage is: the hot air heats the powder around the rotating shaft 2 through the outer wall of the rotating shaft 2. The three-stage heating structure can heat the powder in the hopper 3 more quickly and comprehensively, achieving the purpose of uniform and efficient heating.
[0033] 2. The rotating shaft 2 is designed as a hollow structure with an air outlet 21. Hot air is introduced into the rotating shaft 2 and output from the air outlet 21 to heat the powder around the rotating shaft 2. The stirring head 1 in this structure can be designed as a solid or hollow structure. During operation, hot air is input into the rotating shaft 2 and then output through the air outlet 21 of the stirring head 1. When the rotating shaft 2 drives the stirring head 1 to rotate, the hot air output from the air outlet 21 of the rotating shaft 2 directly blows the powder around the rotating shaft 2, thereby achieving the purpose of heating the powder over a large area. At the same time, the hot air heats the stirring head 1 through the rotating shaft 2, and the heat indirectly heats the powder around the stirring head 1 through the outer wall of the stirring head 1. Since the rotating shaft 2 comes into contact with a large amount of powder during rotation, the hot air can heat a large area of powder, resulting in high heating efficiency and uniform heating. When this structure is installed at the outlet of the hopper 3, a heating device 4 is installed on the inner wall of the hopper 3. The heating device heats the powder of a certain thickness on the inner wall, forming a three-stage heating structure. The first stage is: the heating device on the inner wall of the hopper 3 heats the powder of a certain thickness on the inner wall; the second stage is: the outer wall of the stirring head 1 heats the powder around the stirring head 1; the third stage is: hot air directly heats the powder around the rotating shaft 2 through the air outlet 21 of the rotating shaft 2. The three-stage heating structure can heat the powder in the hopper 3 more quickly and comprehensively, achieving the purpose of uniform and efficient heating.
[0034] 3. Both the rotating shaft 2 and the stirring head 1 are designed as hollow structures, and air outlets 21 are opened on both the stirring head 1 and the rotating shaft 2. Hot air is introduced into the rotating shaft 2 and output through the air outlets 21 on the rotating shaft 2 and the stirring head 1 to heat the powder around the rotating shaft 2 and the stirring head 1. During operation, hot air flows into the stirring head 1 through the rotating shaft 2, and then outputs through the air outlets 21 on the rotating shaft 2 and the stirring head 1. When the rotating shaft 2 drives the stirring head 1 to rotate, the hot air output from the air outlets 21 of the rotating shaft 2 directly blows the powder around the rotating shaft 2. At the same time, the hot air output from the air outlet of the stirring head 1 directly blows the powder around the stirring head 1, thereby achieving the purpose of heating the powder over a large area. Because the rotating shaft 2 and the stirring head 1 will come into contact with a large amount of powder during rotation, and the stirring head 1 will break up the clumps of powder, the hot air can heat a large area of powder simultaneously, resulting in high heating efficiency and uniform heating. When this structure is installed at the outlet of hopper 3, a heating device is installed on the inner wall of hopper 3. The heating device heats the powder of a certain thickness on the inner wall, forming a three-stage heating structure. The first stage is that the heating device on the inner wall of hopper 3 heats the powder of a certain thickness on the inner wall. The second stage is that the hot air output from the air outlet 21 of stirring head 1 directly blows the powder around stirring head 1. The third stage is that the hot air output from the air outlet 21 of rotating shaft 2 directly blows the powder around stirring head 1. The three-stage heating structure can heat the powder in hopper 3 more quickly and comprehensively, achieving the purpose of uniform and efficient heating.
[0035] The heating device is a far-infrared heater, which heats the inner wall of the hopper 3; or the inner wall of the hopper 3 has a second air outlet 22, through which hot air is introduced into the hopper 3. In this structure, two heating structures can be used on the inner wall of the hopper 3 to heat the powder of a certain thickness on the inner wall. The first structure uses a heating device to indirectly heat the powder through the inner wall; the second structure outputs hot air through the second air outlet 21, directly heating the powder on the inner wall of the hopper 3. The second structure can heat the powder more quickly and efficiently, improving heating efficiency.
[0036] The outer surface of the stirring head 1 is provided with multiple contact surfaces 11. The contact surfaces 11 drive the powder to move repeatedly along the axis of the rotating shaft 2 to smooth the powder. During the rotation of the rotating shaft 2, the multiple contact surfaces 11 simultaneously contact the powder and push the powder to move; by controlling the direction of the rotating shaft 2, the powder is repeatedly smoothed so that no accumulation occurs on the surface or inside of the powder.
[0037] The stirring head 1 has a rhomboid cross-section 12, forming four contact surfaces 11 for smoothing the powder. When the rotating shaft 2 drives the stirring head 1 to rotate, the four contact surfaces 11 continuously push the powder, quickly smoothing it. Air outlets 21 can be evenly opened on the four contact surfaces 11, increasing the heating area and allowing all four contact surfaces 11 to simultaneously heat the powder they contact, achieving rapid and uniform heating.
[0038] The two corners of the long diagonal 13 of the rhombus shape 12 are sharp, forming sharp edges 14 on the side of the stirring head 1. When the rotating shaft 2 drives the stirring head 1 to rotate, the two sharp edges 14 break up the lumps of powder, allowing the powder to be quickly broken up and improving the efficiency of breaking up lumps. Compared with the traditional structure of setting a circular stirring rod on the outer circumference of the rotating shaft 2, the circular stirring rod has the problem of poor lumping effect. However, in this structure, because the sharp edges 14 have sharp cuts, the cuts can apply great pressure to the lumps of powder, allowing the powder to be quickly broken up and effectively preventing powder from clumping.
[0039] The lower part of the hopper 3 adopts a double-layer plate structure, which includes an inner plate 51 that contacts the powder and an outer plate 52 that is separated from the inner plate. A cavity 50 is formed between the inner plate 51 and the outer plate 52. Preferably, the far-infrared heater is a plate-shaped structure, and the far-infrared heating plate is connected to the inner plate 51, the outer plate 52, and the bottom plate 53 to form a square vacuum insulation structure. The outer plate 52 can insulate the inner plate 51, reducing the heat dissipation rate of the inner plate 51. Furthermore, the cavity 50 formed between the inner plate 51 and the outer plate 52 can better perform the insulation function, preventing the heat of the inner plate 51 from being quickly dissipated to the outside through the outer plate 52, thus improving the insulation effect.
[0040] The air outlet 21 is located on the contact surface 11. During the contact process between the contact surface 11 and the powder, the air outlet 21 outputs hot air to heat the powder, thereby improving the heating efficiency and uniformity.
[0041] like Figure 6As shown, the stirring heads 1 on both sides of the middle of the rotating shaft 2 are symmetrically arranged. All the stirring heads 1 on the rotating shaft 2 are symmetrically arranged with respect to the midline of the length of the rotating shaft 2. When the rotating shaft 2 drives the stirring heads 1 to rotate in both directions, the contact surface 11 of the stirring head 1 simultaneously smooths the powder from the middle to both sides and from both sides to the middle; through repeated forward and reverse rotation, the contact surface 11 repeatedly smooths the powder, preventing accumulation on the surface and inside of the powder. More preferably, the contact surfaces 11 of the stirring heads 1 on both sides of the middle of the rotating shaft 2 are connected sequentially to form a sine wave structure 10; the two sine wave structures 10 are symmetrically arranged with respect to the midline of the rotating shaft 2. The contact surface 11 of the sine wave structure 10 can smooth the powder at the optimal contact angle, allowing the powder to be pushed more orderly and smoothly, thus being smoothed more quickly.
[0042] By making the contact surface 11 an arc-shaped surface, the contact area between the contact surface 11 and the powder can be further increased, so that the powder can be pushed more smoothly, reducing the resistance of the work, achieving the purpose of smoothing and evenly smoothing the powder, and reducing the noise of the work.
[0043] The two corners of the short diagonal 15 of the rhombus shape 12 are rounded, so that the two adjacent contact surfaces 11 are in the shape of an arch bridge. This structure increases the contact area between the contact surface 11 and the powder, so that the powder can be pushed more smoothly, reducing the resistance of the work and achieving the purpose of smoothing and evenly smoothing the powder.
[0044] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A heating device for rapid and uniform heating of a powder material, characterized by: The utility model relates to a powder mixing device, which comprises a stirring head for pushing the powder to move; a rotating shaft for driving the stirring head to rotate; the rotating shaft is a hollow structure; the rotating shaft and / or the stirring head are provided with air outlet holes; hot air is introduced into the rotating shaft, and the hot air is heated to the powder through the air outlet holes.
2. The heating device for rapidly and uniformly heating a powder material according to claim 1, wherein the air outlet holes are provided on the stirring head, the hot air is introduced into the stirring head through the rotating shaft, and the hot air is output from the air outlet holes of the stirring head to heat the powder around the stirring head.
3. The heating device for rapidly and uniformly heating a powder material according to claim 1, wherein the air outlet holes are provided on the rotating shaft, the hot air is introduced into the rotating shaft and output from the air outlet holes of the rotating shaft to heat the powder around the rotating shaft.
4. The heating device for rapidly and uniformly heating a powder material according to claim 1, wherein the air outlet holes are provided on the stirring head and the rotating shaft, the hot air is introduced into the rotating shaft, and the hot air is output from the air outlet holes of the rotating shaft and the stirring head to heat the powder around the rotating shaft and the stirring head.
5. The heating device for rapidly and uniformly heating a powder material according to claim 1, wherein the stirring head and the rotating shaft are arranged in the hopper, the inner wall of the hopper is provided with a heating device, the heating device heats the powder on the inner wall, or the inner wall of the hopper is provided with a second air outlet hole, and the hot air is introduced into the hopper through the second air outlet hole.
6. The heating device for rapidly and uniformly heating a powder material according to claim 5, wherein the heating device is a far-infrared heater, and the far-infrared heater heats the inner wall of the hopper.
7. A heating device for rapidly and uniformly heating a powder material according to any one of claims 1 to 5, characterized in that, a plurality of contact surfaces are arranged on the outer surface of the stirring head, the contact surfaces drive the powder to move repeatedly along the axis direction of the rotating shaft to smooth the powder.
8. The heating device for rapidly and uniformly heating a powder material according to claim 7, wherein the cross section of the stirring head is in a rhombus shape, and four contact surfaces for smoothing the powder are formed.
9. The heating device for rapidly and uniformly heating a powder material according to claim 8, wherein the two corners of the long diagonal of the rhombus shape are sharp corners, so that the sharp edges are formed on the side surface of the stirring head.
10. The heating device for rapidly and uniformly heating a powder material according to claim 5, wherein the lower part of the hopper adopts a double-layer plate structure, the double-layer plate structure comprises an inner layer plate in contact with the powder and an outer layer plate arranged separately from the inner layer plate, and a cavity is formed between the inner layer plate and the outer layer plate.