A wind-heat coupling drying device

Abstract

The utility model discloses a kind of wind hot coupling drying devices, belong to drying equipment technical field;It includes: conveying component, wind hot component and heat radiation component, conveying component includes the spiral conveying unit for conveying salt, spiral conveying unit includes the core pipe, spiral blade and outer tube of from inside to outside nested arrangement, spiral blade is fixedly connected with core pipe;Wind hot component includes the wind hot unit for generating hot air and the air outlet hole on core pipe, and wind hot unit is communicated with core pipe;Heat radiation component is set on the inner wall of outer tube, and heat radiation component can generate electromagnetic wave for heating salt.The utility model can promote hot air and electromagnetic wave to act together, can realize gentle and uniform heating effect, to effectively solve the problem of surface caking caused by material temperature being too high, and improve drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a wind-heat coupling drying device. Background Technology

[0002] Currently, the industry mainly uses hot air drying or conductive heat exchange drying, as well as a combination of the two, for salt drying. However, hot air drying or conductive heat exchange drying consumes a lot of energy, and the material temperature is relatively high during the drying process, which has a significant impact on the quality of salt.

[0003] Direct hot air drying or conductive heat exchange drying processes can significantly increase the surface temperature of salt, causing the salt surface to clump and harden, resulting in poor overall drying of the salt. Utility Model Content

[0004] In view of this, it is necessary to provide a wind-heat coupled drying device to solve the problem that existing drying devices that directly use hot air are prone to uneven heating, causing salt to clump and harden on the surface.

[0005] This utility model provides a wind-heat coupling drying device, comprising: The conveying assembly includes a spiral conveying unit for conveying salt. The spiral conveying unit includes a core tube, spiral blades, and an outer cylinder nested from the inside out. The spiral blades are fixedly connected to the core tube. A hot air assembly, comprising a hot air unit for generating hot air and an air outlet on the core tube, wherein the hot air unit is connected to the core tube; A thermal radiation component is disposed on the inner wall of the outer cylinder, and the thermal radiation component is capable of generating electromagnetic waves for heating salt.

[0006] Furthermore, the plurality of air outlets are evenly arranged along the circumference and axial direction of the core tube.

[0007] Furthermore, the air-heating unit includes a blower and a heater for heating air. The output end of the heater is connected to the air inlet of the blower, and the air outlet of the blower is connected to the end of the core tube through a pipe.

[0008] Furthermore, the heater is a water bath heater.

[0009] Furthermore, the thermal radiation component includes an infrared emitter and a sleeve. The sleeve is nested between the outer cylinder and the spiral blades, and the infrared emitter is disposed between the sleeve and the outer cylinder. The infrared emitter can emit electromagnetic waves through the sleeve.

[0010] Furthermore, the sleeve is a transparent quartz tube.

[0011] Furthermore, the plurality of infrared emitters are arranged at equal intervals around the central axis of the outer cylinder.

[0012] Furthermore, the inner wall of the outer cylinder is provided with a reflective layer.

[0013] Furthermore, it also includes a drive assembly, which is rotatably connected to the end of the core tube so as to drive the helical blades to rotate relative to each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) A wind-heat coupling drying device of the present invention is provided with a wind-heat component. The wind-heat component includes a wind-heat unit for generating hot air and an air outlet hole opened on the core tube. The wind-heat unit is connected to the core tube. Hot air can be blown out evenly from the air outlet hole of the core tube and directly act on the inside of the salt. This avoids the problem of heat accumulation on the outside in the traditional hot air drying method, thereby reducing the risk of rapid temperature rise on the surface caused by the impact of high temperature airflow.

[0015] (2) The present invention provides a wind-heat coupling drying device, which is equipped with a thermal radiation component. The thermal radiation component is installed on the inner wall of the outer cylinder, and the electromagnetic waves generated by it can penetrate the salt layer for heating. The electromagnetic waves heat the salt from the outside, forming an internal-external coupling effect with the internal wind heat, balancing the temperature gradient between the surface and the interior, preventing surface overheating and clumping, and supplementing the insufficient wind heat. The combined action of hot air and electromagnetic waves can achieve a gentle and uniform heating effect, thereby effectively solving the problem of surface clumping and caking caused by excessively high material temperature, and improving the drying uniformity. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the spiral conveyor unit in this utility model; Figure 3 This is a schematic diagram of the structure of the wind-heating unit in this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the conveying component in this utility model; Figure 5 yes Figure 2 The diagram shows four enlarged local structural features.

[0017] In the diagram, 100 is the conveying assembly; 110 is the screw conveyor unit; 111 is the core tube; 112 is the screw blade; 113 is the outer cylinder; and 114 is the reflective layer. 200. Air-heating assembly; 210. Air-heating unit; 211. Blower; 212. Heater; 220. Air outlet; 300. Thermal radiation component; 310. Infrared emitter; 320. Sleeve; 400. Driver components. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0019] This embodiment of a wind-heat coupled drying device relates to the field of drying equipment technology. Through the synergistic effect of the wind-heat component 200 and the heat radiation component 300, hot air and electromagnetic wave heating are organically combined to achieve uniform heating of salt materials, effectively avoiding the problem of clumping and caking caused by excessively high local temperatures, thereby improving the stability of the drying process and energy utilization efficiency.

[0020] Please see Figures 1 to 5 The air-heat coupling drying device in this embodiment includes: a conveying component 100, an air-heat component 200, and a heat radiation component 300. The conveying component 100 includes a spiral conveying unit 110 for conveying salt. The spiral conveying unit 110 includes a core tube 111, a spiral blade 112, and an outer cylinder 113 nested from the inside to the outside. The spiral blade 112 is fixedly connected to the core tube 111. The spiral blade 112 can push the salt to turn and move, which can both promote the uniform mixing of salt and promote the uniform transfer of heat, avoid the salt from being over-dried locally and causing caking, and also promote the stable movement of salt along the annular space between the core tube 111 and the outer cylinder 113.

[0021] The air-heating assembly 200 includes an air-heating unit 210 for generating hot air and an air outlet 220 opened on the core tube 111. The air-heating unit 210 is connected to the core tube 111, and the hot air can be blown out evenly from the air outlet 220 of the core tube 111, directly acting on the inside of the salt. This avoids the problem of heat accumulation on the outside in the traditional hot air drying method, thereby reducing the risk of rapid temperature rise on the surface caused by the impact of high-temperature airflow.

[0022] The thermal radiation component 300 is installed on the inner wall of the outer cylinder 113. The electromagnetic waves it generates can penetrate the salt layer for heating. The electromagnetic waves heat the salt from the outside, creating an internal-external coupling effect with the internal air heat, balancing the temperature gradient between the surface and the interior, preventing surface overheating and clumping, and supplementing insufficient air heat. The combined effect of hot air and electromagnetic waves achieves a gentle and uniform heating effect, effectively solving the problem of surface clumping and caking caused by excessively high material temperature, and improving drying uniformity.

[0023] During operation, salt containing moisture is added from one end of the outer cylinder 113. As the salt enters the outer cylinder 113, the spiral blades 112 rotate relative to it, propelling the salt material along the length of the outer cylinder 113. During this process, the air-heating unit 210 uses the core tube 111 to blow hot air onto the tumbling salt, drying it. The heat radiation component 300 emits infrared light waves relative to the salt. The combined effect of hot air and electromagnetic waves achieves a gentle and uniform heating effect, effectively solving the problem of surface caking caused by excessively high material temperatures and improving drying uniformity.

[0024] In some embodiments, please refer to Figure 2 Multiple air outlets 220 are evenly arranged along the circumference and axial direction of the core tube 111. The arrangement of multiple air outlets 220 expands the coverage range of the hot air output. The circumferentially uniform arrangement ensures consistent hot air output intensity around the core tube 111, preventing localized high-temperature spots in the salt within the spiral conveying unit 110 due to circumferential heating differences. Simultaneously, the axially uniform arrangement ensures even coverage of hot air along the conveying direction, allowing the salt to be heated uniformly throughout its path from inlet to outlet, avoiding uneven drying caused by axial temperature gradients.

[0025] In practical implementation, the air outlet 220 is a through-hole structure formed on the core tube 111, which can be implemented in different shapes such as circular, elliptical, or strip-shaped holes. In actual applications, the size and number of air outlets 220 can be adjusted according to the hot air flow requirements, with the aim of ensuring that the hot air can be evenly distributed along the salt conveying path. The air outlets 220 are arranged at equal angular intervals along the circumference of the core tube 111, which ensures that the hot air output intensity is consistent in the circumferential direction. Axially uniform arrangement means that the air outlets 220 are arranged at equal intervals along the length of the core tube 111, with the aim of making the hot air form a uniform coverage along the conveying direction.

[0026] When the air-heating unit 210 delivers hot air into the core tube 111, the hot air can be transmitted along the core tube 111 and sprayed out from the air outlet 220 to air-dry the salt that is turned over by the spiral blades 112.

[0027] In some embodiments, please refer to Figure 3The air-heating unit 210 includes a blower 211 and a heater 212 for heating air. The output end of the heater 212 is connected to the air inlet of the blower 211, and the air outlet of the blower 211 is connected to the end of the core tube 111 through a pipe. The blower 211, as the core of airflow drive, provides a stable and controllable airflow output to ensure that hot air can evenly cover the drying area. The heater 212 is specifically responsible for heating the air to a suitable temperature, providing a precise heat source for the drying process, and avoiding excessively high or low temperatures that could affect the quality of the salt.

[0028] The arrangement of connecting the air outlet of the blower 211 to the end of the core tube 111 via a pipe allows hot air to be efficiently guided into the core tube 111. Combined with the air outlet 220 on the core tube 111, the hot air is evenly distributed, allowing the hot air to fully contact the salt. This not only improves the drying efficiency but also prevents clumping caused by local overheating.

[0029] In the specific implementation process, the blower 211 is a device capable of generating airflow. It can be a centrifugal blower 211, an axial flow blower 211, or a mixed flow blower 211. The purpose is to provide a stable and controllable airflow output, ensuring that hot air can evenly cover the drying area. The heater 212 is a device capable of heating the air to a suitable temperature. It can be an electric heater 212, a gas heater 212, or a steam heater 212. The purpose is to provide a precise heat source for the drying process, avoiding excessively high or low temperatures that could affect the quality of the salt.

[0030] It should be noted that a sealed bearing is provided at the end of the core tube 111, and the pipe that connects to the blower 211 is connected to the sealed bearing. The pipe can be connected to the core tube 111, or it can remain stationary with respect to the relatively rotating core tube 111.

[0031] In practical applications, the water bath heater 212 is a device that uses water as an intermediate heat transfer medium to achieve stable heat transfer and precise control. Through the high heat capacity and uniform thermal conductivity of water, the water bath heater 212 effectively buffers temperature fluctuations during the heating process, avoiding localized high-temperature points that may occur when air is directly heated, thus ensuring a stable and uniform hot air output temperature. The water bath heater 212 can directly use wastewater from salt production plants, achieving the recovery and reuse of waste heat. The temperature of the hot air generally needs to be maintained at around 40℃, and the water bath heater 212 can achieve the corresponding effect.

[0032] In some embodiments, please refer to Figure 4The thermal radiation component 300 includes an infrared heater 212 and a sleeve 320. The sleeve 320 is nested between the outer cylinder 113 and the spiral blade 112, and the infrared heater 212 is disposed between the sleeve 320 and the outer cylinder 113. By nesting the sleeve 320 between the spiral blade 112 and the outer cylinder 113, an effective physical isolation layer is formed, preventing the heat generated by the infrared heater 212 from being directly conducted to the outer cylinder 113, thereby suppressing abnormal temperature rise in the outer cylinder 113. The infrared heater 212 has the characteristic of emitting electromagnetic waves through the sleeve 320, which not only ensures efficient heat transfer but also maintains the stability of the dry environment, fundamentally solving the defect of salt clumping and hardening on the surface due to local high temperature.

[0033] In practical implementation, the sleeve 320 is a physical isolation structure with transmission characteristics. It can be made of transparent quartz material, and its purpose is to evenly diffuse the heat generated by the infrared heater 212 onto the salt on the spiral blades 112 through its transmission characteristics, while preventing excessive heat absorption by the outer cylinder 113. The infrared heater 212 is a device capable of generating electromagnetic waves, which can be achieved by converting electrical energy into heat energy. Its purpose is to utilize electromagnetic wave energy to efficiently penetrate the sleeve 320 and act on the salt, ensuring uniform temperature distribution during the drying process.

[0034] In detail, this solution forms an effective physical isolation layer by nesting a sleeve 320 between the spiral blade 112 and the outer cylinder 113, preventing the heat generated by the infrared heater 212 from being directly conducted to the outer cylinder 113, thereby suppressing abnormal temperature rise in the outer cylinder 113. The placement of the infrared heater 212 between the sleeve 320 and the outer cylinder 113 ensures that the heat source is close to the outer cylinder 113 but acts indirectly through the sleeve 320. This arrangement effectively prevents localized overheating of the salt during transport due to contact with the high-temperature cylinder wall. Furthermore, the infrared heater 212's ability to emit electromagnetic waves through the sleeve 320 not only ensures efficient heat transfer but also maintains the stability of the drying environment, fundamentally solving the problem of salt caking and hardening due to localized high temperatures. In the aforementioned air-heat coupled drying device, the coordinated layout of the sleeve 320 and the infrared heater 212 optimizes the heat radiation transfer path and improves the overall drying effect.

[0035] It should be further explained that transparent quartz, due to its high transmittance and high temperature resistance, can effectively transmit the electromagnetic waves generated by the infrared heater 212, avoiding energy loss caused by the absorption or scattering of infrared rays by ordinary materials. The purpose of introducing the transparent quartz tube is to ensure that the electromagnetic waves penetrate the sleeve 320 evenly and act on the salt, thereby achieving uniform heating of the salt surface and preventing clumping caused by excessively high local temperatures.

[0036] In some embodiments, please refer to Figure 4Multiple infrared heaters 212 are equidistantly arranged around the central axis of the outer cylinder 113. This equidistant arrangement of the infrared heaters 212 around the central axis of the outer cylinder 113 effectively solves the problem of uneven heat distribution. The multiple infrared heaters 212 cover the entire circumference of the outer cylinder 113, and their equidistant arrangement fully utilizes the cylindrical symmetry of the outer cylinder 113, thus ensuring that the radiation angle and distance of each heater 212 remain consistent. Heat can be evenly radiated to all areas of the inner wall of the outer cylinder 113, avoiding localized overheating caused by random or densely packed heater positions.

[0037] In practical implementation, the infrared heater 212 is a device capable of emitting electromagnetic waves to heat objects. It can be implemented using carbon fiber heating tubes, halogen heating tubes, or ceramic heaters 212. The purpose of this arrangement is to ensure uniform heat distribution and avoid local overheating. Furthermore, the equidistant arrangement involves multiple infrared heaters 212 arranged at fixed intervals around the central axis of the outer cylinder 113. This aims to fully utilize the cylindrical symmetry of the outer cylinder 113, ensuring that the radiation angle and distance of each heater 212 remain consistent.

[0038] In some embodiments, please refer to Figure 5 The inner wall of the outer cylinder 113 is provided with a reflective layer 114. The reflective layer 114 can efficiently reflect the electromagnetic waves emitted by the infrared heater 212 back to the drying area, avoiding direct absorption of heat by the material of the outer cylinder 113, thereby reducing energy loss. At the same time, the reflective layer 114 promotes a more uniform radiation coverage of electromagnetic waves along the salt transport path, making the heat distribution more uniform and preventing local overheating.

[0039] In practical implementation, the reflective layer 114 is a functional structure that can efficiently reflect electromagnetic waves back to the drying area. It can be achieved using metal plating, high-reflectivity coatings, etc. The purpose of introducing the reflective layer 114 is to reduce the direct absorption of heat by the outer cylinder 113 material, thereby optimizing the utilization efficiency of thermal radiation energy and improving the uniformity of heating distribution.

[0040] Due to the presence of the reflective layer 114, when the thermal radiation component 300 and the air-heat component 200 work together, they can better control the surface temperature of the salt, fundamentally suppressing the problem of surface caking and ensuring drying quality and product stability.

[0041] In some embodiments, please refer to Figure 1 A wind-heat coupling drying device also includes a drive component, which is rotatably connected to the end of the core tube. The drive component can drive the core tube to rotate relative to the spiral blades, providing power for the movement of salt.

[0042] In the specific implementation process, the drive component 400 is a drive motor. The shaft of the drive motor is connected to the core tube through a coupling. The drive motor can provide power for the rotation of the core shaft.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A wind-heat coupled drying device, characterized in that, include: The conveying assembly includes a spiral conveying unit for conveying salt. The spiral conveying unit includes a core tube, spiral blades, and an outer cylinder nested from the inside out. The spiral blades are fixedly connected to the core tube. A hot air assembly, comprising a hot air unit for generating hot air and an air outlet on the core tube, wherein the hot air unit is connected to the core tube; A thermal radiation component is disposed on the inner wall of the outer cylinder, and the thermal radiation component is capable of generating electromagnetic waves for heating salt.

2. The air-heat coupling drying device according to claim 1, characterized in that, The multiple air outlets are evenly arranged along the circumference and axial direction of the core tube.

3. The air-heat coupling drying device according to claim 1, characterized in that, The air-heating unit includes a blower and a heater for heating air. The output end of the heater is connected to the air inlet of the blower, and the air outlet of the blower is connected to the end of the core tube through a pipe.

4. The air-heat coupling drying device according to claim 3, characterized in that, The heater is a water bath heater.

5. The air-heat coupling drying device according to claim 1, characterized in that, The thermal radiation component includes an infrared emitter and a sleeve. The sleeve is nested between the outer cylinder and the spiral blades. The infrared emitter is disposed between the sleeve and the outer cylinder and is capable of emitting electromagnetic waves through the sleeve.

6. The air-heat coupling drying device according to claim 5, characterized in that, The sleeve is a transparent quartz tube.

7. The air-heat coupling drying device according to claim 5, characterized in that, The infrared emitters are arranged at equal intervals around the central axis of the outer cylinder.

8. A wind-heat coupled drying device according to any one of claims 5-7, characterized in that, The inner wall of the outer cylinder is provided with a reflective layer.

9. The air-heat coupling drying device according to claim 1, characterized in that, It also includes a drive assembly, which is rotatably connected to the end of the core tube to drive the helical blades to rotate relative to each other.

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