Drying tower and gas drying system

Abstract

The utility model discloses a drying tower and gas drying system, it includes tower body, the upper top wall fixedly connected with drive motor of tower body, the output fixedly connected with central shaft of drive motor, the outside fixedly connected with the flow -guiding disc of top open -mouthed of central shaft, the exhaust port fixed communication of tower body has cyclone separator, the first filter fixed communication has first pipeline through cyclone separator, the first filter fixed communication has waste heat heat exchanger, the outlet fixed communication of waste heat heat exchanger has circulating fan. Through above -mentioned structure, through the flow -guiding disc of hole can evenly disperse material, and cooperate arc flow -guiding plate can guide material and airflow full contact, improve atomization and airflow mixing efficiency, in addition, through cyclone separator, waste heat heat exchanger and circulating fan realize waste heat recovery, and the waste heat of airflow after drying is reused, thereby reduce energy consumption, and cooperate and improve the quality of material after drying.

Description

Technical Field

[0001] This utility model relates to the field of gas drying technology, and in particular to a drying tower and a gas drying system. Background Technology

[0002] In industrial production, drying is a crucial step in material processing and is widely used in various industries such as chemicals, food, pharmaceuticals, and building materials. Its core objective is to remove moisture or solvents from materials to achieve stable storage, subsequent processing, or finished product preparation. However, with the expansion of industrial production scale and the continuous improvement of product quality requirements, traditional drying equipment has gradually revealed a series of technical bottlenecks, making it difficult to meet the demands for efficient, energy-saving, and high-quality production.

[0003] Traditional drying towers commonly suffer from uneven material dispersion during material processing. Most equipment uses a single feed pipe to directly transport material into the tower body, leading to material agglomeration and localized accumulation, preventing sufficient and uniform contact with the drying airflow. This low gas-liquid two-phase mixing efficiency not only prolongs drying time but also easily causes localized over-drying or incomplete drying.

[0004] Meanwhile, traditional drying towers typically require a continuous input of large amounts of high-temperature gas flow, and the high-temperature exhaust gas after drying is often directly released into the atmosphere, resulting in a significant waste of energy as a large amount of residual heat is not effectively recovered and utilized. Therefore, a device is needed that can achieve uniform material dispersion, improve gas-liquid contact efficiency, recover residual heat, and prevent the accumulation of impurities in the circulating gas flow. Utility Model Content

[0005] The purpose of this invention is to provide a drying tower and a gas drying system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the following structure is proposed:

[0007] Structure 1: This utility model also provides a drying tower as described above, comprising: a base plate, a support fixedly connected to the upper surface of the base plate, a tower body fixedly connected inside the support, a drive motor fixedly connected to the upper top wall of the tower body, a central shaft fixedly connected to the output end of the drive motor, and a guide plate with an open top fixedly connected to the outside of the central shaft, the bottom of the guide plate having multiple evenly distributed through holes; an annular collection chamber is provided inside the tower body, and a disc atomizer is fixedly connected inside the annular collection chamber through multiple conical nozzles; a first filling plate and a second filling plate are arranged sequentially from top to bottom inside the tower body, the first filling plate being filled with a first medium, and the second filling plate being filled with a second medium.

[0008] Preferably, a plurality of axially distributed arc-shaped guide plates are fixedly connected to the bottom of the central shaft, and the plurality of arc-shaped guide plates are located below the disc atomizer.

[0009] Preferably, the particle size of the first filler plate is larger than that of the second filler plate, the first medium is a ceramic ring medium, and the second medium is a stainless steel corrugated medium.

[0010] Preferably, an isolation cavity is fixedly provided on the top of the tower body, and the isolation cavity is covered outside the drive motor.

[0011] Preferably, a discharge pipe and a feed pipe are respectively provided at the bottom and top of the tower body, and a control valve is provided on the outside of both the discharge pipe and the feed pipe.

[0012] Preferably, the top and bottom of the tower body are respectively provided with an exhaust port and an air inlet.

[0013] Structure 2: This utility model also provides a gas drying system as described above, including: the drying tower shown in Structure 1, wherein the exhaust port of the tower body is fixedly connected to a cyclone separator, the cyclone separator is fixedly connected to a first filter through a first pipeline, the first filter is fixedly connected to a waste heat exchanger, the outlet of the waste heat exchanger is fixedly connected to a circulating fan, the outlet of the circulating fan is fixedly connected to a static mixer through a second pipeline, and the static mixer is fixedly connected to a heater.

[0014] Preferably, a fresh air unit is fixedly connected to the upper surface of the bracket, and a second filter is fixedly connected to the fresh air unit, with the second filter being fixedly connected to a second pipeline.

[0015] Preferably, the heater is fixedly connected to the air inlet of the tower body through a third pipeline, and a regulating valve is provided on the outside of the air inlet.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The drying tower, through a guide plate with an opening at the top and uniform through holes at the bottom, combined with a drive motor to rotate the central shaft, can disperse the input material into multiple fine material streams under the action of centrifugal force and gravity, avoiding the material agglomeration problem of traditional equipment; at the same time, the combination of the annular collection chamber, multi-cone nozzles and disc atomizer can atomize the material into fine and uniform droplets, so that the uniformly dispersed material and the hot airflow form counter-current or cross-current contact, greatly increasing the contact area and effectively improving the atomization and airflow mixing efficiency, laying the foundation for subsequent efficient drying;

[0017] In the drying system, a cyclone separator separates material dust from the airflow after drying. After impurities are filtered out by the first filter, a waste heat exchanger recovers the waste heat from the airflow. The clean airflow containing waste heat is then transported to the static mixer by a circulating fan. At the same time, a fresh air fan supplies fresh clean air, which not only reuses waste heat to reduce energy consumption, but also prevents the accumulation of impurities in the circulating airflow, preventing impurities from adhering to the material and affecting its purity. It also reduces the risk of failure due to impurities depositing inside the equipment, significantly improving the quality of the dried material. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a complete structural diagram of the drying tower and gas drying system of this utility model;

[0020] Figure 2 This is a cross-sectional view of the drying tower of this utility model;

[0021] Figure 3 This is a structural diagram of the drying tower of this utility model;

[0022] Figure 4 This is a structural diagram of the flow distribution mechanism of the drying tower of this utility model;

[0023] Figure 5 This is a structural diagram of the atomization component of the drying tower of this utility model;

[0024] Figure 6 This is a structural diagram of the first and second packing plates of the drying tower of this utility model;

[0025] Figure 7 The drying tower of this utility model Figure 2 Partial structural diagram at point A in the middle;

[0026] Figure 8 This is a structural diagram of the support frame for the drying tower of this utility model;

[0027] Figure 9 This is a structural diagram of the hot air drying circulation pipeline of the gas drying system of this utility model.

[0028] Legend:

[0029] 1. Base plate; 2. Support frame; 3. Tower body; 301. Isolation chamber; 4. Drive motor; 5. Central shaft; 6. Guide plate; 7. Through hole; 8. Annular collection chamber; 9. Conical nozzle; 10. Disc atomizer; 11. First filling plate; 111. First medium; 12. Second filling plate; 121. Second medium; 13. Arc-shaped guide plate; 14. Discharge pipe; 15. Control valve; 16. Exhaust port; 17. Inlet port; 18. Cyclone separator; 19. First pipeline; 20. First filter; 21. Waste heat exchanger; 22. Circulating fan; 23. Second pipeline; 24. Static mixer; 25. Heater; 26. Fresh air fan; 27. Second filter; 28. Third pipeline; 29. ​​Regulating valve; 30. Feed pipe. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] The present invention will be further described in detail below with reference to embodiments:

[0032] Example 1

[0033] like Figure 1-9 As shown, the drying tower of this utility model embodiment includes: a base plate 1, a support 2 fixedly connected to the upper surface of the base plate 1, a tower body 3 fixedly connected inside the support 2, a drive motor 4 fixedly connected to the upper top wall of the tower body 3, a central shaft 5 fixedly connected to the output end of the drive motor 4, a guide plate 6 with an open top fixedly connected to the outside of the central shaft 5, and a plurality of evenly distributed through holes 7 provided at the bottom of the guide plate 6; an annular collection chamber 8 is provided inside the tower body 3, and a disc atomizer 10 is fixedly connected inside the annular collection chamber 8 through a plurality of conical nozzles 9; a first filling plate 11 and a second filling plate 12 are arranged sequentially from top to bottom inside the tower body 3, the first filling plate 11 is filled with a first medium 111, and the second filling plate 12 is filled with a second medium 121;

[0034] Multiple axially distributed arc-shaped guide plates 13 are fixedly connected to the bottom of the central shaft 5, and the multiple arc-shaped guide plates 13 are located below the disc atomizer 10; the medium particle size of the first filling plate 11 is larger than that of the second filling plate 12, the first medium 111 is a ceramic ring medium, and the second medium 121 is a stainless steel corrugated medium; an isolation chamber 301 is fixedly provided at the top of the tower body 3, and the isolation chamber 301 is covered outside the drive motor 4; a discharge pipe 14 and a feed pipe 30 are respectively provided at the bottom and top of the tower body 3, and control valves 15 are provided outside the discharge pipe 14 and the feed pipe 30; an exhaust port 16 and an air inlet 17 are respectively provided at the top and bottom of the tower body 3.

[0035] In this embodiment, the control valve 15 on the discharge pipe 14 is closed, and a high-temperature drying airflow is introduced into the air inlet 17 at the bottom of the tower body 3. The airflow flows upward along the inside of the tower body 3 and is discharged through the air outlet 16 at the top of the tower body 3, forming a stable airflow channel. At the same time, the drive motor 4 drives the central shaft 5 and the guide plate 6 on the shaft and the arc-shaped guide plate 13 at the bottom of the shaft to rotate, so that the liquid material entering the tower body can be evenly distributed. Then the dried material enters the annular collection chamber 8, and is conveyed to the disc atomizer 10 through multiple conical nozzles 9 connected to the annular collection chamber 8. The disc atomizer 10 rotates at high speed to break the material into droplets. The rotating arc-shaped guide plate 13 guides the airflow to spiral upward, prolonging the airflow residence time and ensuring initial contact with the droplets.

[0036] The droplets rise with the airflow, first passing through the first packing plate 11 arranged from top to bottom within the tower body 3. The ceramic rings within the first packing plate 11 intercept and disperse the droplets, and assist in heat exchange, achieving coarse drying. Then, they pass through the second packing plate 12 below, where its fine particle size and high thermal conductivity complete the deep drying of the material. The resulting solid particles settle due to gravity, falling along the inner wall of the tower body 3 or through the gaps between the packing plates, while the airflow carrying water vapor and dust continues upward, exiting from the exhaust port 16. Once a certain amount of material has collected at the bottom of the tower body 3, the control valve 15 of the discharge pipe 14 is opened, and the material is discharged through the discharge pipe 14, completing the drying process.

[0037] The gas drying system of this utility model embodiment includes: a cyclone separator 18 fixedly connected to the exhaust port 16 of the tower body 3; a first filter 20 fixedly connected to the cyclone separator 18 via a first pipeline 19; a waste heat exchanger 21 fixedly connected to the first filter 20; a circulating fan 22 fixedly connected to the outlet of the waste heat exchanger 21; a static mixer 24 fixedly connected to the outlet of the circulating fan 22 via a second pipeline 23; and a heater 25 fixedly connected to the static mixer 24. A fresh air fan 26 is fixedly connected to the upper surface of the support 2; a second filter 27 is fixedly connected to the fresh air fan 26; and the second filter 27 is fixedly connected to the second pipeline 23. The heater 25 is fixedly connected to the air inlet 17 of the tower body 3 via a third pipeline 28; and a regulating valve 29 is provided outside the air inlet 17.

[0038] In this embodiment, the dust-laden, humid airflow discharged from the exhaust port 16 of the tower body 3 first passes through a cyclone separator 18 to separate most of the dust, then passes through a first filter 20 for fine filtration, and subsequently enters a waste heat exchanger 21 to transfer heat to the subsequent airflow, thus realizing waste heat utilization. The airflow recovered from waste heat is transported to the second pipeline 23 by a circulating fan 22. At the same time, the fresh air introduced by the fresh air fan 26, after being filtered by the second filter 27, also enters the second pipeline 23 and mixes evenly with the circulating airflow in a static mixer 24. The mixed airflow enters the heater 25 for heating, and then is transported to the air inlet 17 of the tower body 3 through a third pipeline 28. The airflow rate can be controlled by adjusting the regulating valve 29 outside the air inlet 17. After the hot airflow enters the tower body, it completes the drying of the material.

[0039] Example 2

[0040] like Figure 1-8 As shown, the drying tower of this utility model embodiment includes a base plate 1, a support 2 fixedly connected to the upper surface of the base plate 1, and a tower body 3 fixedly connected inside the support 2. When the drive motor 4 at the top of the tower body 3 is started, a high-temperature drying airflow is simultaneously introduced through the air inlet 17 at the bottom of the tower body 3. The airflow flows upward along the interior of the tower body 3 and is finally discharged through the exhaust port 16 at the top, forming a stable bottom-in, top-out airflow channel, providing a basic environment for subsequent drying. The drive motor 4 drives the central shaft 5 to rotate at a uniform speed, causing the guide plate 6 to rotate synchronously with the central shaft 5. The opening structure of the guide plate 6 guides the material above to flow downward, while the multiple evenly distributed through holes 7 at its bottom allow the material to fall evenly.

[0041] The liquid material to be dried falls into the annular collection chamber 8, which is fixedly connected to the disc atomizer 10 via multiple conical nozzles 9. Inside the annular collection chamber 8, the material is evenly conveyed to the disc atomizer 10 through the conical nozzles 9. The disc atomizer, through high-speed rotation, breaks the material into fine droplets, greatly increasing the contact area between the material and the drying airflow, thus improving drying efficiency. Furthermore, the arc-shaped guide plate 13 rotates synchronously with the central axis 5, guiding the upward-flowing drying airflow to form a spiral trajectory, extending the residence time of the airflow inside the tower 3 and ensuring sufficient contact with the droplets. Additionally, the arc-shaped guide plate 13 can block some droplets that fall too quickly, preventing them from falling directly to the bottom of the tower 3 before being fully dried, further improving the drying effect of the atomized material.

[0042] The atomized material then enters the first filler plate 11. When the droplets and the drying airflow pass through the gaps in the ceramic rings of the first filler plate 11, the ceramic rings not only intercept and disperse the droplets, preventing them from agglomerating, but also quickly remove moisture from the surface of the droplets through heat exchange with the high-temperature airflow, achieving coarse drying of the material and initially forming semi-dry particles. Subsequently, it enters the second filler plate 12, where the stainless steel corrugated medium has excellent thermal conductivity and can work synergistically with the high-temperature airflow to deeply dry the material particles, removing residual moisture inside the particles and ensuring uniform drying.

[0043] The material, after being deeply dried by the second packing plate 12, has formed dry solid particles. Because the particles' own weight is greater than the buoyancy of the airflow, as the airflow continues to flow upwards, the dried particles gradually separate from the airflow and settle downwards along the inner wall of the tower body 3 or the gaps between the packing plates. The dry airflow, carrying a small amount of moisture and fine dust, continues to flow upwards and is eventually discharged through the exhaust port 16 at the top of the tower. The dried material that settles downwards eventually falls to the bottom of the tower body 3. After a certain amount of dried material has been collected at the bottom of the tower body 3, the control valve 15 outside the discharge pipe 14 is opened, and the dried material is smoothly discharged through the discharge pipe 14, completing the entire drying process. In actual operation, the material discharge speed can be adjusted by controlling the opening frequency and degree of the control valve to ensure a continuous and stable drying process.

[0044] It should be noted that, firstly, the irregular gaps formed by the stacked ceramic rings physically intercept the droplets, forcing them to change their trajectory and disperse into smaller droplets. This increases the contact area between the droplets and the hot air, improving convective heat transfer efficiency and accelerating surface moisture evaporation. Secondly, the ceramic rings themselves have good heat resistance and a certain degree of thermal conductivity, so they are heated by exchanging heat with the high-temperature hot air first. When the droplets come into contact with the surface of the high-temperature ceramic rings, in addition to convective heat transfer from the hot air, they also acquire heat from the ceramic rings through conduction, further accelerating the evaporation of moisture from the droplet surface.

[0045] Furthermore, stainless steel has a much higher thermal conductivity than ceramics. The corrugated structure design increases the contact area between the medium, hot air, and particles. The high-temperature hot air first transfers heat to the stainless steel corrugated medium, causing it to heat up rapidly. When the semi-dried particles come into contact with the high-temperature stainless steel surface, efficient conductive heat exchange directly heats the interior of the particles, accelerating the diffusion of residual moisture from the interior to the surface. The conductive heat exchange of the stainless steel medium, combined with the convective heat exchange and moisture-carrying effect of the hot air, not only rapidly heats the interior of the particles, causing residual moisture to migrate to the surface, but also promptly removes the moisture evaporated from the surface through the hot air, ultimately achieving deep drying of the particles and ensuring uniform moisture removal.

[0046] Example 3

[0047] like Figure 1 and Figure 9As shown, the gas drying system includes a tower body 3 with an exhaust port 16 fixedly connected to a cyclone separator 18. The cyclone separator 18 is fixedly connected to a first filter 20 via a first pipeline 19. The first filter 20 is fixedly connected to a waste heat exchanger 21. The control valve 15 of the discharge pipe 14 at the bottom of the tower body 3 is closed, and the regulating valve 29 outside the air inlet 17 is adjusted to a preset opening to ensure stable airflow. The circulating fan 22 is first turned on, and the circulating fan 22 delivers airflow to the static mixer 24 via a second pipeline 23.

[0048] The fresh air unit 26 is restarted to draw in outside air. After being filtered by the second filter 27 to remove dust and impurities, the air also flows into the second pipe 23 and mixes thoroughly with the circulating airflow in the static mixer 24. The static mixer 24, through its internal interlaced guide vanes or spiral structure, forces the two airflows to generate intense turbulence and shear mixing, breaking up airflow stratification and ensuring that the circulating airflow and fresh air are uniformly integrated in terms of temperature, humidity, and flow rate. This ultimately forms a mixed airflow with stable volume and uniform composition, providing a stable heat transfer medium for the subsequent heating and drying processes, and ensuring the cleanliness and stable volume of the incoming air. The mixed airflow enters the heater 25, is heated to the target drying temperature, and then is delivered to the air inlet 17 of the tower body 3 through the third pipe 28. It flows upward along the inside of the tower body 3, forming a bottom-in, top-out drying airflow channel.

[0049] During the drying process, the exhaust gas carrying water vapor and a small amount of dust is discharged from the exhaust port 16 at the top of the tower 3 and enters the cyclone separator 18. Most of the solid dust in the exhaust gas is separated by centrifugal force. The separated dust can be collected and recycled. The exhaust gas, which has been preliminarily purified by the cyclone separator 18, enters the first filter 20 through the first pipeline 19 to further filter fine dust and ensure the cleanliness of the exhaust gas. Then the exhaust gas flows into the waste heat exchanger 21, which transfers its own waste heat to the airflow to be heated. The airflow to be heated absorbs the waste heat and its temperature rises. When it enters the heater 25, the heating energy consumption can be reduced, realizing the efficient recovery and recycling of energy and reducing the operating cost of the system.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A drying tower, comprising: The base plate (1) is characterized in that a bracket (2) is fixedly connected to the upper surface of the base plate (1), a tower body (3) is fixedly connected inside the bracket (2), a drive motor (4) is fixedly connected to the upper top wall of the tower body (3), a central shaft (5) is fixedly connected to the output end of the drive motor (4), a guide plate (6) with an open top is fixedly connected to the outside of the central shaft (5), and a plurality of evenly distributed through holes (7) are provided at the bottom of the guide plate (6). The tower body (3) is provided with an annular collection chamber (8), and the annular collection chamber (8) is fixedly connected to a disc atomizer (10) through multiple conical nozzles (9); The tower body (3) is provided with a first filling plate (11) and a second filling plate (12) arranged from top to bottom inside the tower body (3). The first filling plate (11) is filled with a first medium (111), and the second filling plate (12) is filled with a second medium (121).

2. The drying tower according to claim 1, characterized in that, The bottom of the central shaft (5) is fixedly connected to a plurality of axially distributed arc-shaped guide plates (13), and the plurality of arc-shaped guide plates (13) are located below the disc atomizer (10).

3. The drying tower according to claim 1, characterized in that, The first filler plate (11) has a larger medium particle size than the second filler plate (12). The first medium (111) is a ceramic ring medium, and the second medium (121) is a stainless steel corrugated medium.

4. The drying tower according to claim 1, characterized in that, An isolation cavity (301) is fixedly provided on the top of the tower body (3), and the isolation cavity (301) covers the outside of the drive motor (4).

5. The drying tower according to claim 1, characterized in that, The bottom and top of the tower body (3) are respectively provided with a discharge pipe (14) and a feed pipe (30), and control valves (15) are provided on the outside of the discharge pipe (14) and the feed pipe (30).

6. The drying tower according to claim 1, characterized in that, The tower body (3) is provided with an exhaust port (16) at the top and an air inlet (17) at the bottom.

7. A gas drying system, characterized in that, The drying tower comprising any one of claims 1 to 6, wherein the exhaust port (16) of the tower body (3) is fixedly connected to a cyclone separator (18), the cyclone separator (18) is fixedly connected to a first filter (20) via a first pipeline (19), the first filter (20) is fixedly connected to a waste heat exchanger (21), the outlet of the waste heat exchanger (21) is fixedly connected to a circulating fan (22), the outlet of the circulating fan (22) is fixedly connected to a static mixer (24) via a second pipeline (23), and the static mixer (24) is fixedly connected to a heater (25).

8. The gas drying system according to claim 7, characterized in that, A fresh air unit (26) is fixedly connected to the upper surface of the bracket (2), and the fresh air unit (26) is fixedly connected to a second filter (27), which is fixedly connected to a second pipeline (23).

9. The gas drying system according to claim 7, characterized in that, The heater (25) is fixedly connected to the air inlet (17) of the tower body (3) through the third pipeline (28), and a regulating valve (29) is provided on the outside of the air inlet (17).

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