Spiral water-vapor separation equipment

Abstract

The invention relates to the technical field of gas drying, and discloses spiral water vapor separation equipment which comprises a drying tower and a distribution pipe, a gas inlet is formed in the upper portion of the distribution pipe, a gas outlet is formed in the bottom of the drying tower, the distribution pipe with compressed gas introduced therein is coaxially arranged in the drying tower, and distribution holes communicated with the drying tower are formed in the distribution pipe. An adsorbent is arranged between the distribution pipe and the drying tower, and a spiral-pipe-shaped distribution plate is coaxially arranged in the distribution pipe; the flow stroke of gas in the adsorbent layer is obviously prolonged, the contact time is prolonged, the spiral array distribution holes ensure that the gas is uniformly dispersed, and local overload and dead zones are avoided; the flow stroke of gas in the adsorbent layer is remarkably prolonged, the contact time is prolonged, high-pressure gas is adopted to periodically push the flow guide plate to move, the flow range of the gas is effectively widened, the gas is diffused more uniformly in the adsorbent layer, local overload and dead zones are reduced, and the overall drying efficiency and the adsorbent utilization rate are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas drying, and specifically to a spiral water vapor separation device. Background Art

[0002] A compressed gas dryer is an industrial device used to remove moisture from compressed air. Its core function is to reduce the dew point temperature of the compressed gas and prevent liquid water, water vapor, and impurities from damaging the pneumatic system, precision instruments, or production processes. It is widely used in industries such as manufacturing, chemical engineering, food processing, medical equipment, and spraying, and is a key device to ensure the stable operation of the compressed air system and product quality.

[0003] However, when the existing dryer equipment adopts a uniform distributed intake of gas from the inlet end into the drying tower, this intake method often leads to overload at the front end of the adsorbent. Due to the uneven distribution of gas in the drying tower, the front-end adsorbent bears an excessive load and thus quickly reaches a saturated state, while the adsorbent at the rear end has low utilization due to insufficient gas flow. In continuous operation, the front-end adsorbent completely fails due to long-term overload and needs to be replaced, while more than 30% of the rear-end adsorbent remains unused, resulting in a great waste of resources. In the high-humidity environment of some chemical industries, the constant gas flow rate intake method of the existing dryer equipment becomes another drawback. Since the gas flow rate remains unchanged, high-humidity gas is prone to form a rigid air flow when passing through the drying tower. This air flow seems to form a water film on the surface of the adsorbent, namely the so-called "tunnel effect". This effect causes the deep-layer adsorbent to be unable to effectively contact the moisture in the gas, thus losing its drying function, and the equipment efficiency is greatly attenuated as a result. Summary of the Invention

[0004] (I) Technical problems to be solved: Aiming at the deficiencies of the prior art, the present invention provides a spiral water vapor separation device, which has the advantages of optimizing the gas flow path and the adsorbent structure, improving the contact efficiency between the gas and the adsorbent, and the drying performance, and solves the problems of the gas flowing in a single direction, low utilization rate of the adsorbent surface, and easy local adsorption saturation.

[0005] (2) Technical solution: To achieve the above object of optimizing the air flow path and adsorbent structure and improving the contact efficiency between the gas and the adsorbent and the drying performance, the present invention provides the following technical solution: A spiral water vapor separation device, including a drying tower and a distribution pipe. An air inlet is provided above the distribution pipe, and an air outlet is provided at the bottom of the drying tower. The distribution pipe through which compressed gas is introduced is coaxially arranged inside the drying tower. Distribution holes communicating with the drying tower are formed on the distribution pipe. An adsorbent is arranged between the distribution pipe and the drying tower. When gas is introduced into the distribution pipe, the gas flows from the distribution holes into the adsorbent and then enters the drying tower and is discharged from the air outlet. A distribution plate in the shape of a spiral pipe is coaxially arranged inside the distribution pipe, and the gas inside the distribution pipe flows along the spiral direction of the distribution plate.

[0006] Preferably, the distribution holes are arranged at equal intervals in a spiral array. The distribution plate includes an upper guide plate and a lower guide plate. The upper guide plate and the lower guide plate are coaxially arranged. An internally hollow upper fixing shaft is coaxially fixedly connected to the upper guide plate, and an internally hollow lower fixing shaft is coaxially fixedly connected to the lower guide plate. The upper fixing shaft and the lower fixing shaft are slidably connected to each other, and an air cavity is arranged between the upper guide plate and the lower guide plate. The air cavity is communicated with the space between the upper fixing shaft and the lower fixing shaft. A spiral chute is arranged inside the distribution pipe. The upper guide plate and the lower guide plate are slidably connected in the chute. Air leakage grooves communicating with the air cavity are formed at the positions where the upper guide plate and the lower guide plate are connected in the chute. An annular feedback spray groove is formed on the distribution pipe, and a connection channel communicating with the feedback spray groove is formed on the side surface of the chute. The pressure inside the distribution pipe is less than the pressure inside the air cavity. When the gas inside the air cavity increases, the upper guide plate and the lower guide plate slide upward and downward respectively until the air leakage grooves are communicated with the connection channel, and then the gas inside the air cavity is discharged into the drying tower along the feedback spray groove. After the gas volume inside the air cavity decreases and the pressure decreases, the upper guide plate and the lower guide plate reset. Compressed gas is continuously introduced into the air cavity to make the upper guide plate and the lower guide plate cycle the above movements periodically.

[0007] Preferably, a connecting shaft is coaxially and slidably connected inside the upper fixing shaft and the lower fixing shaft. The bottom of the connecting shaft is fixedly connected to the distribution pipe, and the diameter of the connecting shaft is smaller than the diameter of the upper fixing shaft and smaller than the diameter of the lower fixing shaft.

[0008] Preferably, gas with a pressure greater than the pressure inside the distribution pipe is continuously introduced into the air cavity. During the upward and downward sliding of the upper guide plate and the lower guide plate respectively, the volume of the gas inside the distribution pipe is compressed and the pressure increases, so that the flow rate of the gas ejected from the distribution holes increases.

[0009] Preferably, a plurality of groups of feedback spray grooves are provided. The feedback spray grooves are arranged at the upper and lower ends of the distribution holes, and all the plurality of groups of feedback spray grooves are interconnected through the connection channels. When the feedback spray grooves discharge gas, a low-pressure layer is formed around the distribution holes, so that the gas in the distribution holes is discharged periodically up and down due to the change of pressure.

[0010] Preferably, a plurality of distribution holes are arranged at equal intervals along the spiral path direction of the distribution plate.

[0011] Preferably, the aperture of the feedback spray groove changes in gradient along its spiral path. The aperture of the feedback spray groove near the air inlet is small, and the aperture of the feedback spray groove near the air outlet is large.

[0012] Preferably, a protruding limiting plate is arranged in the sliding groove. The limiting plate is spiral-shaped, and the upper and lower end faces of the limiting plate respectively abut against the upper diversion plate and the lower diversion plate.

[0013] Preferably, the surface of the distribution plate is provided with wavy protrusions.

[0014] (III) Beneficial effects: Compared with the prior art, the present invention provides a spiral water-vapor separation device, which has the following beneficial effects: 1. For the spiral water-vapor separation device, through the combined use of the distribution pipe structure and the distribution plate structure, the flow path of the gas in the adsorbent layer is significantly extended, the contact time is increased, and the spiral array distribution holes ensure uniform dispersion of the gas, avoiding local overload and dead zones. At the same time, the high-pressure gas periodically pushes the diversion plate to move and is ejected through the feedback spray grooves to form a periodic low-pressure layer, thereby enhancing the impact on the water film on the surface of the adsorbent and effectively increasing the flow range of the gas, making the gas diffuse more uniformly in the adsorbent layer, reducing local overload and dead zones, and this high-pressure gas will form a pulsed gas impact, breaking the capillary force between the adsorbent particles, releasing the retained moisture, and enhancing the desorption efficiency through the acoustic streaming resonance effect, significantly improving the overall drying efficiency and the utilization rate of the adsorbent, while reducing the maintenance requirements.

[0015] 2. For the spiral water-vapor separation device, through the combined use of the distribution pipe structure and the distribution hole structure, the gradient aperture design of the feedback spray groove generates a high-speed jet with a small aperture at the air inlet end to enhance the intensity of the local low-pressure layer and break the initial water film on the surface of the adsorbent; the large aperture at the air outlet end expands the coverage range of the low-pressure area, compensates for the pressure drop difference in the gas flow, maintains the pressure difference stability between the upper and lower sections of the adsorbent layer, reduces the gas retention at the end, thereby ensuring uniform gas distribution, improving the overall operation stability and drying depth of the drying tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the spiral water-vapor separation device in the present invention; Figure 2 Front view of the structure of the spiral water-vapor separation device in the present invention; Figure 3 Cross-sectional view of the structure of the spiral water-vapor separation device in the present invention; Figure 4 Cross-sectional view of the spiral water-vapor separation device installed in the drying tower in the present invention; Figure 5 Partial cross-sectional view of the distribution plate structure in the present invention; Figure 6 Cross-sectional view of the structure after the volume expansion of the air cavity in the present invention; Figure 7 Schematic diagram of gas flow through the distribution holes in the present invention; Figure 8 Schematic diagram of the change in the aperture of the distribution pipe in the second embodiment of the present invention; Figure 9 Schematic diagram of the installation position of the present invention inside the dryer.

[0017] In the figure: 1, drying tower; 2, adsorbent; 3, distribution pipe; 31, distribution hole; 32, chute; 33, feedback spray groove; 34, connection channel; 35, connection shaft; 36, limit plate; 4, distribution plate; 41, upper guide plate; 42, lower guide plate; 43, upper fixed shaft; 44, lower fixed shaft; 45, air cavity; 46, air release groove. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Please refer to Figures 1-4 , a spiral water-vapor separation device, including a drying tower 1 and a distribution pipe 3. An air inlet is arranged above the distribution pipe 3, and an air outlet is arranged at the bottom of the drying tower 1. The distribution pipe 3 is coaxially arranged inside the drying tower 1 and is internally provided with compressed gas. Through the vertical flow design of upper air inlet and lower air outlet, as Figure 4 shown, the self-weight of the gas is utilized to assist the flow, reducing energy consumption; and in cooperation with the coaxially distributed distribution pipe 3, a three-dimensional flow field with radial diffusion is formed, enabling the gas to uniformly radiate from the center to the tower wall; the natural convection effect can be formed at the bottom air outlet, avoiding gas retention and reducing flow resistance. A distribution plate 4 in the shape of a spiral pipe is coaxially arranged inside the distribution pipe 3, and the gas inside the distribution pipe 3 flows along the spiral direction of the distribution plate 4. Distribution holes 31 communicating with the drying tower 1 are opened on the distribution pipe 3, and the distribution holes 31 adopt a hole array with spiral phase distribution, asFigure 2 As shown, the centrifugal force makes the gas form a spiral diffusion trajectory in the adsorbent layer 2; compared with the traditional linear arrangement, the spiral hole array can extend the gas travel distance by 2-3 times; at the same time, the phase difference design of adjacent hole positions can eliminate the air flow interference and prevent the formation of a rigid air flow beam. An adsorbent 2 is arranged between the distribution pipe 3 and the drying tower 1, and the distribution pipe 3 and the drying tower 1 form an annular sandwich space, so as to ensure the uniformity of the filling of the adsorbent 2. By controlling the thickness of the sandwich, while ensuring the air flow distribution, the loading amount of the adsorbent 2 is maximized, and the utilization rate of the adsorbent 2 is improved. When gas is introduced into the distribution pipe 3, the gas is forced to be first accelerated spirally in the distribution pipe 3 and then radially ejected through the distribution holes 31. Figure 7 In the direction of the arrow, this path design can produce the Venturi effect, increasing the velocity of the ejected gas by 40-60%, effectively penetrating the pores of the adsorbent 2; at the same time, the negative pressure suction is formed at the bottom outlet to maintain continuous flow and avoid the formation of eddy currents of the gas in the tower.

[0020] Please refer to Figures 4-7, the distribution holes 31 are arranged at equal intervals in a spiral array. By optimizing the gas diffusion path through the centrifugal force field, the gas travel distance can be extended by 2-3 times compared with the traditional linear arrangement. At the same time, the phase difference distribution eliminates the gas flow interference and avoids the formation of a rigid gas flow beam. The equal interval setting ensures the balance of the gas flux per unit area of the two layers of adsorbent. The distribution plate 4 includes an upper guide plate 41 and a lower guide plate 42. The upper guide plate 41 and the lower guide plate 42 are coaxially arranged, and the upper guide plate 41 and the lower guide plate 42 form a variable cross-section flow channel. By changing the axial displacement, the flow volume is changed, and then the gas in the distribution pipe 3 is compressed, thereby instantaneously increasing the gas pressure and forcing the gas velocity ejected from the distribution holes 31 to increase by 40-60%, enhancing the penetration force on the surface of the adsorbent 2, effectively breaking the water film and stripping the deep moisture. An internally hollow upper fixed shaft 43 is coaxially and fixedly connected to the upper guide plate 41, and an internally hollow lower fixed shaft 44 is coaxially and fixedly connected to the lower guide plate 42. The upper fixed shaft 43 and the lower fixed shaft 44 are slidably connected. The upper fixed shaft 43 and the lower fixed shaft 44 serve as the support structures for the upper guide plate 41 and the lower guide plate 42 to ensure their stable movement. The sliding connection design allows the upper guide plate 41 and the lower guide plate 42 to move relative to each other when the gas pressure in the gas cavity 45 changes. A gas cavity 45 is arranged between the upper guide plate 41 and the lower guide plate 42. The gas cavity 45 is connected to the space between the upper fixed shaft 43 and the lower fixed shaft 44. The gas cavity 45 is used to store high-pressure gas to push the upper guide plate 41 and the lower guide plate 42 to move. The connection between the gas cavity 45 and the upper fixed shaft 43 and the lower fixed shaft 44 ensures the smooth transfer of gas and the uniform distribution of pressure. A spiral chute 32 is arranged in the distribution pipe 3. The upper guide plate 41 and the lower guide plate 42 are slidably connected in the chute 32. The spiral chute 32 guides the upper guide plate 41 and the lower guide plate 42 to move along a specific path. At the positions where the upper guide plate 41 and the lower guide plate 42 are connected in the chute 32, air release grooves 46 communicating with the gas cavity 45 are provided. The air release grooves 46 allow the gas in the gas cavity 45 to be discharged to form a periodic low-pressure layer. An annular feedback spray groove 33 is provided on the distribution pipe 3, and a connection channel 34 communicating with the feedback spray groove 33 is provided on the side of the chute 32; the pressure in the distribution pipe 3 is less than the pressure in the gas cavity 45. When the gas in the gas cavity 45 increases, the upper guide plate 41 and the lower guide plate 42 slide upward and downward respectively until the air release grooves 46 are connected to the connection channel 34, and then the gas in the gas cavity 45 is discharged into the drying tower 1 along the feedback spray groove 33. After the gas volume in the gas cavity 45 decreases, the pressure decreases, causing the upper guide plate 41 and the lower guide plate 42 to reset. The movement of the upper guide plate 41 and the lower guide plate 42 is driven by the air pressure difference to form a periodic gas impact. When the gas in the gas cavity 45 is discharged and the pressure decreases, the upper guide plate 41 and the lower guide plate 42 reset under the action of the gas pressure in the distribution pipe 3 to prepare for the next movement cycle; compressed gas is continuously introduced into the gas cavity 45 to make the upper guide plate 41 and the lower guide plate 42 cycle the above movements periodically.Continuously introduce compressed gas to ensure that there is always enough pressure in the gas chamber 45 to drive the movement of the upper deflector 41 and the lower deflector 42. This periodic movement helps to increase the flow range and diffusion uniformity of the gas, thereby improving the overall drying efficiency and the utilization rate of the adsorbent 2.

[0021] Please refer to Figures 5-7 , there are several groups of feedback spray grooves 33. The feedback spray grooves 33 are arranged at the upper and lower ends of the distribution holes 31, and all the several groups of feedback spray grooves 33 are interconnected through a connecting channel 34. By setting several groups of feedback spray grooves 33 and arranging them at the upper and lower ends of the distribution holes 31, it can ensure that the gas is more evenly distributed around the distribution holes 31. These spray grooves are interconnected through the connecting channel 34, enabling the gas to flow freely between each spray groove, thereby further enhancing the uniformity of the gas. When the feedback spray grooves 33 discharge gas, a low-pressure layer is formed around the distribution holes 31, and then the gas in the distribution holes 31 is discharged periodically due to the pressure change. When the feedback spray grooves 33 discharge gas, a low-pressure layer will be formed around the distribution holes 31. This low-pressure layer forms a pressure difference with the gas in the distribution pipe 3, thereby driving the gas in the distribution holes 31 to be discharged outward, as Figure 7 shown.

[0022] Please refer to Figure 5 and Figure 6 , continuously introduce gas with a pressure greater than that in the distribution pipe 3 into the gas chamber 45, so that the upper deflector 41 and the lower deflector 42 can move periodically. During the upward and downward sliding processes of the upper deflector 41 and the lower deflector 42 respectively, the volume of the gas in the distribution pipe 3 is compressed and the pressure increases, thereby compressing the gas in the distribution pipe 3, enhancing the penetration force on the surface of the adsorbent 2, effectively breaking the water film and stripping the deep moisture.

[0023] Please refer to Figures 4-7, a connecting shaft 35 is coaxially and slidably connected inside the upper fixed shaft 43 and the lower fixed shaft 44. The bottom of the connecting shaft 35 is fixedly connected to the distribution pipe 3. Moreover, the diameter of the connecting shaft 35 is smaller than that of the upper fixed shaft 43, and the diameter of the connecting shaft 35 is smaller than that of the lower fixed shaft 44. This design allows the connecting shaft 35 to slide freely inside the upper fixed shaft 43 and the lower fixed shaft 44 while maintaining the consistency of the axis, ensuring the stability and accuracy of mechanical movement. A number of distribution holes 31 are equidistantly arranged in an array along the spiral path direction of the distribution plate 4. The design of the spiral path can make the gas distribute more evenly on the distribution plate 4. At the same time, it increases the contact area between the gas and the distribution plate 4, improving the gas discharge efficiency. The equidistant array setting can ensure that the gas flow between each distribution hole 31 is relatively uniform, avoiding the situation of too much or too little gas locally. This design helps to improve the stability and reliability of the entire system. A raised limiting plate 36 is arranged inside the chute 32. The limiting plate 36 is spiral-shaped, and the upper and lower end faces of the limiting plate 36 respectively abut against the upper deflector 41 and the lower deflector 42. The design of the limiting plate 36 can limit the sliding range of the upper deflector 41 and the lower deflector 42 inside the chute 32, ensuring that they can slide along the predetermined path. The surface of the distribution plate 4 is provided with wavy protrusions. The wavy protrusions change the gas flow path, breaking the laminar flow state and making the gas form a turbulent flow on the surface of the distribution plate 4. This turbulent flow can effectively increase the contact area between the gas and the surface of the adsorbent 2, enhancing the mass transfer efficiency.

[0024] Embodiment 2: Please refer to Figure 8 , the aperture of the feedback spray groove 33 changes in gradient along its spiral path. The aperture of the feedback spray groove 33 near the air inlet is small, and the aperture of the feedback spray groove 33 near the air outlet is large. The smaller aperture near the air inlet can generate a high-speed jet flow with a flow velocity increase of 40 - 60%, forming a high-intensity low-pressure layer, thereby breaking through the initial water film on the surface of the adsorbent 2, eliminating the "tunnel effect", and enhancing the penetration ability into the pores of the adsorbent 2, improving the deep dehydration efficiency. The aperture gradually increases at the air outlet end, which can expand the coverage range of the low-pressure area. At the same time, it compensates for the pressure drop loss during gas flow to avoid gas retention at the end, reducing the unused area of the adsorbent 2. And the gradient change can form a pressure gradient field to maintain the stability of the axial pressure difference of the adsorbent 2 layer, preventing local overload. Through this design, different sections of the drying tower 1 obtain differential gas regulation, ensuring both the initial contact intensity and the end flow efficiency, and realizing the improvement of the utilization rate of the adsorbent 2.

[0025] Working principle: The structure of the present invention needs to be installed and used in the drying tower 1 of a compressed air dryer. During use, the compressed gas enters from the air inlet above the distribution pipe 3 and forms a spiral flow along the coaxially arranged spiral distribution plate 4. The surface of the distribution pipe 3 is provided with distribution holes 31 at equal intervals in a spiral array. Under the action of centrifugal force, the gas uniformly enters the adsorbent 2 layer in the drying tower 1 through the distribution holes 31. The spiral path can extend the gas flow stroke and increase the contact time with the adsorbent 2. At the same time, the distribution holes 31 are arranged at equal intervals along the spiral direction, so as to ensure that the gas is evenly dispersed in the adsorbent 2 layer, avoid local overload, and reduce the occurrence of dead zones. During this process, high-pressure gas with a pressure greater than the compressed gas pressure in the distribution pipe 3 is introduced into the air cavity 45, so that the gas volume in the air cavity 45 continuously increases, and the upper guide plate 41 and the lower guide plate 42 are respectively pushed to slide upward and downward along the connecting shaft 35 along its axial direction. When the upper guide plate 41 and the lower guide plate 42 gradually slide to the air release groove 46 to communicate with the connecting channel 34, the high-pressure gas is ejected through the feedback spray groove 33 to form a periodic low-pressure layer. The low-pressure layer will cause the pressure at the upper and lower ends of the distribution hole 31 to decrease, thereby causing the gas flow velocity in the distribution hole 31 to fluctuate up and down. Figure 7 As shown by the arrow in Figure 7 , it can further enhance the impact on the water film on the surface of the adsorbent 2 and effectively increase the gas flow range, making the gas more evenly diffused in the adsorbent 2 layer, reducing local overload and dead zones. Subsequently, due to the reduction of the gas in the air cavity 45, the pressure in the air cavity 45 will be less than the pressure in the distribution pipe 3, so that the upper guide plate 41 and the lower guide plate 42 gradually reset. After resetting, the gas in the air cavity 45 will continue to increase in volume and pressure, so that the upper guide plate 41 and the lower guide plate 42 show periodic up and down sliding. By increasing the pressure of the high-pressure gas, the movement period of the upper guide plate 41 and the lower guide plate 42 can be shortened, and then a pulsed gas impact can be generated. This pulsed gas impact can effectively break the capillary force between the adsorbent 2 particles, release the retained moisture and expand the gas coverage range, avoid local saturation of the adsorbent 2, and improve the overall drying efficiency. When the pulse frequency of the pulsed gas matches the natural frequency of the adsorbent 2, a resonance acoustic streaming effect is triggered, further enhancing the desorption efficiency. And this high-frequency pulsed gas impact can turn the low-pressure layer into a high-frequency pulsed low-pressure layer.

[0026] The aperture gradient change of the feedback spray groove 33 can compensate for the flow pressure drop and maintain the overall gas distribution balance. At the air inlet end, small-aperture spray grooves generate high-speed jets to enhance the intensity of the local low-pressure layer and break the initial water film on the surface of the adsorbent 2. At the air outlet end, large-aperture spray grooves expand the coverage range of the low-pressure area, reduce the gas retention at the end, and avoid uneven gas distribution caused by pressure drop differences.

[0027] During the gas flow process, the wavy protrusions on the surface of the distribution plate 4 can disturb the air flow, form a turbulent effect, increase the contact area between the gas and the surface of the adsorbent 2, and effectively improve the contact area between the gas and the adsorbent 2 and the mass transfer efficiency.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral water vapor separation device, comprising a drying tower (1) and a distribution pipe (3), wherein an air inlet is arranged at the top of the distribution pipe (3), and an air outlet is arranged at the bottom of the drying tower (1), and the distribution pipe (3) into which compressed gas is introduced is coaxially arranged in the drying tower (1), characterized in that: The distribution pipe (3) is provided with a distribution hole (31) which is in communication with the drying tower (1); an adsorbent (2) is arranged between the distribution pipe (3) and the drying tower (1); when gas is introduced into the distribution pipe (3), the gas flows from the distribution hole (31) into the adsorbent (2) and then enters the drying tower (1) and is discharged from the gas outlet; a distribution plate (4) in the shape of a spiral tube is coaxially arranged in the distribution pipe (3); and the gas in the distribution pipe (3) flows in a spiral direction along the distribution plate (4).

2. The spiral water vapor separation device according to claim 1, characterized in that: The distribution holes (31) are arranged in a spiral array at equal intervals. The distribution plate (4) comprises an upper guide plate (41) and a lower guide plate (42). The upper guide plate (41) and the lower guide plate (42) are coaxially arranged. An upper fixed shaft (43) having an internal hollow portion is coaxially fixedly connected to the upper guide plate (41). A lower fixed shaft (44) having an internal hollow portion is coaxially fixedly connected to the lower guide plate (42). The upper fixed shaft (43) and the lower fixed shaft (44) are connected to each other. The upper guide plate (41) and the lower guide plate (42) are slidably connected, and an air cavity (45) is provided between the upper guide plate (41) and the lower guide plate (42), the air cavity (45) is communicated with the upper fixed shaft (43) and the lower fixed shaft (44), a spiral chute (32) is provided in the distribution pipe (3), the upper guide plate (41) and the lower guide plate (42) are slidably connected in the chute (32), and the upper guide plate (41) and the lower guide plate (42) are in the chute (32). 2) are provided with a gas relief groove (46) connected to the gas cavity (45), the distribution pipe (3) is provided with an annular feedback spray groove (33), and the side of the slide groove (32) is provided with a connecting channel (34) connected to the feedback spray groove (33); the pressure in the distribution pipe (3) is lower than the pressure in the gas cavity (45), and when the gas in the gas cavity (45) increases, the upper guide plate (41) and the lower guide plate (42) are respectively moved upward , slide downward until the air release groove (46) is connected to the connecting channel (34), and the gas in the air cavity (45) is discharged into the drying tower (1) along the feedback spray groove (33). The pressure of the gas in the air cavity (45) decreases after the amount of gas in the air cavity (45) decreases, so that the upper guide plate (41) and the lower guide plate (42) are reset; compressed gas is continuously introduced into the air cavity (45), so that the upper guide plate (41) and the lower guide plate (42) periodically cycle the above-mentioned movement.

3. The spiral water vapor separation device according to claim 2, characterized in that: A connecting shaft (35) is coaxially slidably connected inside the upper fixed shaft (43) and the lower fixed shaft (44), the bottom of the connecting shaft (35) is fixedly connected to the distribution pipe (3), and the diameter of the connecting shaft (35) is smaller than the diameter of the upper fixed shaft (43), and the diameter of the connecting shaft (35) is smaller than the diameter of the lower fixed shaft (44).

4. The spiral water vapor separation device according to claim 2, characterized in that: The gas cavity (45) is continuously supplied with gas having a pressure greater than that in the distribution pipe (3). When the upper guide plate (41) and the lower guide plate (42) slide upward and downward respectively, the volume of the gas in the distribution pipe (3) is reduced and the pressure is increased, thereby increasing the flow rate of the gas ejected from the distribution hole (31).

5. The spiral water vapor separation device according to claim 2, characterized in that: The feedback nozzles (33) are provided in a plurality of groups. The feedback nozzles (33) are provided at the upper and lower bottom ends of the distribution holes (31), and the plurality of groups of the feedback nozzles (33) are interconnected through the connection channels (34). When the feedback nozzles (33) discharge gas, a low-pressure layer is formed around the distribution holes (31), thereby causing the gas in the distribution holes (31) to be discharged in a periodic up-and-down fluctuation due to pressure changes.

6. The spiral water vapor separation device according to claim 1, characterized in that: A plurality of distribution holes (31) are arranged in an equidistant array along the spiral path direction of the distribution plate (4).

7. The spiral water vapor separation device according to claim 2, characterized in that: The aperture of the feedback nozzle slot (33) changes gradiently along its spiral path; the aperture of the feedback nozzle slot (33) is small near the air inlet, and the aperture of the feedback nozzle slot (33) is large near the air outlet.

8. The spiral water vapor separation device according to claim 2, characterized in that: A raised limiting plate (36) is provided in the slide groove (32), the limiting plate (36) being in a spiral shape, and the upper and lower end surfaces of the limiting plate (36) respectively press against the upper guide plate (41) and the lower guide plate (42).

9. The spiral water vapor separation device according to claim 1, characterized in that: The distribution plate (4) is provided with wave-shaped protrusions on its surface.

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