A gas drying treatment device

Abstract

The application relates to a gas drying treatment device which comprises a cold trap pipe, a back-rolling channel, defrosting balls, a defrosting assembly and a vibration driving assembly. The inner wall of the cold trap pipe is provided with a spiral guide groove. The space between the device shell and the cold trap pipe is provided with the back-rolling channel, the back-rolling channel is communicated with the spiral guide groove to form a continuous closed loop channel, the defrosting balls are movably arranged in the continuous closed loop channel and can circularly move in the continuous closed loop channel, the defrosting assembly is annularly arranged outside the cold trap pipe and comprises a shielding layer, a rotating driving coil layer, a monitoring layer and a heating coil layer, the rotating driving coil layer is used for electromagnetically driving the defrosting balls to move along the spiral guide groove from the lower end of the cold trap pipe to the upper end, the monitoring layer is used for monitoring the position of the defrosting balls, and the vibration driving assembly is used for driving the defrosting balls to high-frequency vibrate so as to remove the local frost on the inner wall of the cold trap pipe. The application has the advantages of high defrosting efficiency, good defrosting effect, low operation cost, small temperature disturbance and high reliability.

Description

Technical Field

[0001] This application belongs to the technical field of gas drying equipment, and more specifically relates to a gas drying treatment device. Background Technology

[0002] A cold trap is a device that captures vapor in a gas stream through low-temperature condensation. It is widely used in vacuum systems, freeze drying, environmental monitoring, and semiconductor processes to protect vacuum pumps, dry materials, or separate specific components. Its core component, the cold trap tube, is typically cooled to extremely low temperatures, inevitably causing water vapor or other process gases to condense on the inner wall of the tube, forming a frost layer with good insulation. The continuous thickening of the frost layer significantly reduces the effective orifice diameter of the flow channel, increases flow resistance, and eventually completely blocks the tube, leading to decreased system efficiency and even process interruption. Currently, the most common defrosting method in the industry involves wrapping an electric heating wire around the outside of the cold trap tube and then covering it with an insulation layer. Intermittent heating raises the tube wall temperature, melting the frost layer on the inner wall. However, this traditional pure heat-melting defrosting method has many inherent drawbacks, limiting its effectiveness in high-efficiency, precision applications. 1. Low energy efficiency: In order to melt hard frost, the entire cold trap tube or a considerable section must be heated, consuming a large amount of electrical energy to heat the entire tube wall and its insulation structure, rather than just acting on the frost layer itself. Most of the energy is lost to the environment, and the proportion of energy effectively used for defrosting is very low, resulting in huge energy waste, especially for systems that require frequent defrosting, which leads to high operating costs. 2. Severe temperature fluctuations affect process stability: The core function of a cold trap is to maintain a stable low-temperature environment. Localized heating can cause significant temperature fluctuations in the cold trap. This thermal shock can not only cause captured volatile samples to re-evaporate, leading to cross-contamination, but also prolong the "cooling waiting time" required to reach the set operating temperature again after the refrigeration system restarts. This severely reduces the utilization rate of the equipment and the continuity and consistency of the production process. For precision experiments or production processes, such temperature uncertainty is unacceptable. 3. Slow defrosting speed and poor ability to handle heavy frost: Heat conduction takes time, and the process from heating the outer wall to melting the frost layer on the inner wall is slow. For thick and dense frost layers, the heat melting method is particularly inefficient and takes even longer. 4. Reliability issues and maintenance costs: The heating wire is exposed to a harsh working environment of alternating hot and cold temperatures for extended periods, making it prone to oxidation, aging, and embrittlement. Ultimately, it may burn out or break due to thermal stress fatigue. Such damage is usually difficult to repair locally, requiring complete disassembly and replacement of the entire heating assembly, resulting in high maintenance costs and long downtime.

[0003] 5. Potential safety hazards: Localized overheating may cause insulation materials to carbonize or damage nearby precision temperature measuring elements, and in extreme cases, may even lead to a fire risk. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a gas drying treatment apparatus to solve one or more of the above-mentioned problems existing in the prior art.

[0005] The objective of this invention is achieved as follows: A gas drying treatment apparatus, comprising: The cold trap tube is located inside the device housing, and the inner wall of the cold trap tube is provided with a spiral guide groove. The rollback channel is located in the space between the device housing and the cold trap tube. The top and bottom ends of the rollback channel are respectively connected to the top and bottom ends of the spiral guide groove to form a continuous closed loop channel. At least one defrosting ball is movably disposed within the continuous closed-loop channel and is capable of cyclical movement within the continuous closed-loop channel; The defrosting assembly, arranged around the outside of the cold trap tube, has a shielding layer, a rotary drive coil layer, a monitoring layer, and a heating coil layer arranged sequentially from the outside to the inside; the rotary drive coil layer is used to electromagnetically drive the defrosting balls to move along the spiral guide groove from the lower end to the upper end of the cold trap tube; the monitoring layer is used to monitor the position of the defrosting balls in real time. A vibration drive assembly is used to drive the defrosting balls to vibrate at high frequency to remove localized frost buildup on the inner wall of the cold trap tube.

[0006] Furthermore, flanges are provided at both ends of the cold trap tube, and multiple cold trap tubes can be connected in series through the flanges; Furthermore, the inner wall of the cold trap tube is also provided with an elastic retainer.

[0007] Furthermore, a polyimide film is filled between adjacent layers of the shielding layer, the rotary drive coil layer, the monitoring layer, and the heating coil layer, and the device housing is made of permalloy. Furthermore, the interior of the device housing is lined with an aerogel felt.

[0008] Furthermore, the rotary drive coil layer is composed of a three-phase Litz wire winding; the heating coil layer is a closely packed spiral nickel-chromium alloy foil.

[0009] Furthermore, the vibration drive assembly includes a lifting chamber disposed outside one side of the device housing. The lifting chamber is equipped with a lead screw assembly, which is connected to a vibration coil ring. The lead screw assembly is configured to drive the vibration coil ring to move up and down along the axial direction of the cold trap tube and to stop at a designated position on the frost plug.

[0010] Furthermore, the lead screw assembly includes a lead screw, a positioning motor, and a connecting block; wherein, the lead screw is installed inside the lifting chamber via a bearing, and the lead screw is driven by the output shaft of the positioning motor; the lead screw is threadedly connected to the connecting block, and a vibration coil ring is installed on the connecting block.

[0011] Furthermore, the vibration coil is arranged in a ring around the outside of the defrosting assembly, and its operating frequency is 20kHz-100kHz.

[0012] Furthermore, the rollback channel has a straight pipe section and a top arc-shaped section and a bottom arc-shaped section located at the top and bottom ends of the straight pipe section. The top arc-shaped section is connected to the top end of the spiral guide groove, and the bottom arc-shaped section is connected to the bottom end of the spiral guide groove.

[0013] Furthermore, a replacement box is connected in series between the bottom arc-shaped section and the straight pipe section of the rollback channel, and the inner wall of the replacement box is provided with magnetic blocks.

[0014] Furthermore, several Hall sensors are uniformly arranged along the axial direction on the monitoring layer, and each Hall sensor is covered with a permalloy shield.

[0015] Furthermore, the axial spacing of the Hall sensors is 50 mm.

[0016] Furthermore, the defrosting ball has a three-layer composite structure, which includes a magnetic core, a counterweight, and a shell from the inside out; the magnetic core is a neodymium iron boron permanent magnet, which is magnetized by radial NSN tripolar magnetization; the counterweight is a tungsten alloy and is eccentrically positioned on one side of the magnetic core; the shell is made of stainless steel and its surface is coated with a diamond-like carbon coating.

[0017] Compared with the prior art, the gas drying treatment device provided by the present invention can achieve at least one of the following beneficial effects: This invention utilizes electromagnetically driven defrosting balls for mechanical defrosting, applying brief, localized micro-heating and high-frequency vibration only at the frost plug, significantly reducing energy consumption. This localized action generates only minimal thermal disturbance, preventing drastic temperature fluctuations in the cold trap tube and ensuring process continuity and sample capture stability. The synergistic effect of mechanical vibration and thermal assistance rapidly breaks up or even prevents the formation of thick frost layers, greatly increasing defrosting speed. Simultaneously, it reduces the number of heating element start-ups and shutdowns and operating time, and primarily relies on non-contact electromagnetic drive and robust three-layer composite defrosting balls, resulting in high system reliability and significantly reduced maintenance requirements and costs. Furthermore, it avoids localized overheating, fundamentally eliminating the potential risk of carbonization of insulation materials or fire caused by continuous heating. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this specification 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 recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the gas drying treatment device provided by the present invention; Figure 2 This is a partial internal view of the gas drying device provided by the present invention. Figure 3 This is a partial schematic diagram of another perspective of the gas drying treatment apparatus provided by the present invention. Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram; Figure 5 This is a side view schematic diagram of the gas drying treatment apparatus provided by the present invention; Figure 6 for Figure 5 Schematic diagram of the BB section structure; Figure 7 This is a schematic diagram of the monitoring layer of the gas drying treatment device provided by the present invention; Figure 8 This is an internal view of the defrosting ball bearing of the gas drying device provided by the present invention.

[0020] Figure label: 1. Device housing; 2. Defrosting assembly; 21. Shielding layer; 22. Rotary drive coil layer; 23. Monitoring layer; 231. Hall sensor; 24. Heating coil layer; 3. Vibration drive assembly; 31. Lifting chamber; 32. Positioning motor; 33. Lead screw; 34. Connecting block; 35. Vibration coil ring; 4. Flexible retainer; 5. Defrosting ball bearing; 51. Magnetic core; 52. Counterweight; 53. Outer shell; 54. Diamond-like carbon coating; 6. Cold trap tube; 61. Spiral guide groove; 62. Rollback channel; 621. Straight pipe section; 622. Top arc section; 623. Bottom arc section; 63. Replacement box; 64. Flange. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0023] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0024] Example 1 A specific embodiment of the present invention, such as Figures 1 to 3As shown, a gas drying device is disclosed, including a device housing 1, a cold trap tube 6, at least one defrosting ball 5, a defrosting assembly 2, and a vibration drive assembly 3. The cold trap tube 6 is disposed inside the device housing 1, and its inner wall is provided with a spiral guide groove 61. A return channel 62 is provided inside the device housing 1, and its two ends are respectively connected to the top and bottom ends of the spiral guide groove 61, for the defrosting ball 5 to circulate between the spiral guide groove 61 and the return channel 62. Specifically, the return channel 62 is located in the space between the device housing 1 and the cold trap tube 6, and its top and bottom ends are respectively connected to the top and bottom ends of the spiral guide groove 61 to form a continuous closed loop channel; that is, the continuous closed loop channel is formed by... The spiral guide groove 61 and the return channel 62 are connected to allow the defrosting ball 5 to circulate between the spiral guide groove 61 and the return channel 62; at least one defrosting ball 5 is movably disposed in the continuous closed-loop channel and can circulate within the continuous closed-loop channel; a defrosting assembly 2 is provided on the outer ring of the cold trap tube 6, the defrosting assembly 2 including a shielding layer 21, a rotary drive coil layer 22, a monitoring layer 23 and a heating coil layer 24 arranged sequentially from the outside to the inside; the rotary drive coil layer 22 is used to electromagnetically drive the defrosting ball 5 to move along the spiral guide groove 61 from the lower end to the upper end of the cold trap tube 6; the monitoring layer 23 is used to monitor the position of the defrosting ball 5 in real time; the vibration drive assembly 3 is used to drive the defrosting ball 5 to vibrate at high frequency to remove local frost on the inner wall of the cold trap tube 6.

[0025] In one alternative implementation, refer to Figure 2 As shown, flanges 64 are provided at both ends of the cold trap tube 6. Several cold trap tubes 6 are connected in series through flanges 64 according to the actual required length of the drying channel. Optionally, an elastic retainer 4 is also snapped and fixed to the inner wall of the cold trap tube 6 to restrict the defrosting balls 5. In the non-working state, in the event of an accidental impact, or during local defrosting vibration, the retainer fixes, protects, and guides the defrosting balls 5 to prevent them from being displaced or colliding, while not affecting their freedom of movement during normal operation.

[0026] Reference Figures 4-6 As shown, a polyimide film is filled between adjacent layers of the shielding layer 21, the rotary drive coil layer 22, the monitoring layer 23, and the heating coil layer 24 for electrical insulation, mechanical vibration reduction, and electromagnetic isolation, preventing high-frequency vibration from being transmitted to the precision shielding layer 21 and ensuring the stability of signal monitoring. By filling with a polyimide film, it is also possible to effectively prevent eddy currents from being induced in the nearby metal conductors (heating coil layer 24, stainless steel device housing 1) when the rotary drive coil layer 22 and vibration drive assembly 3 are working, especially the focusing coil.

[0027] Furthermore, the housing 1 of the device is made of permalloy and has an aerogel felt attached inside. This not only prevents the strong internal magnetic field from interfering with other precision electronic devices and shields the signal of the internal Hall sensor 231 from interference by the external stray magnetic field, ensuring the accuracy of the defrost ball position detection, but also reduces the cold loss of the cold trap tube 6 and significantly reduces the energy consumption of the refrigeration system.

[0028] Furthermore, the rotary drive coil layer 22 is composed of a three-phase Litz wire winding, which is used to generate a magnetic field with constant intensity and smooth rotation inside the cold trap tube 6, providing a continuous, uniform, and smooth magnetic driving force for the defrosting ball 5, enabling it to move smoothly upward along the spiral guide groove 61. During the drying process, the defrosting ball 5 continuously moves within the spiral guide groove 61. Since the frost forms on the inner wall of the cold trap tube 6, a part of the defrosting ball 5 protrudes from the inner wall surface of the cold trap. During the movement of the defrosting ball 5, the protruding part of the defrosting ball 5 directly squeezes and scrapes the frost layer on the cold trap tube wall, destroying the ice crystal structure and reducing the occurrence of frost.

[0029] Optionally, in this embodiment, a heating coil layer 24 that can be raised and lowered is provided outside the cold trap tube 6. The heating coil layer 24 is a closely packed spiral nickel-chromium alloy foil. It does not heat the entire cold trap tube 6 as a whole, but can quickly and briefly heat a specific frost-filled area at a specific time and location. At this moment, the vibration drive component 3 is started synchronously, driving the defrosting ball 5 to mechanically break the frost layer that has been weakened by heat assistance.

[0030] It is worth noting that, such as Figure 7 As shown, several Hall sensors 231 are evenly arranged along the axial direction on the monitoring layer 23. The axial spacing of the Hall sensors 231 is 50mm, and each Hall sensor 231 is equipped with a permalloy shield. The Hall sensors 231 can locate the position of the defrosting ball 5. At the same time, based on the time when the adjacent Hall sensors 231 detect the defrosting ball 5, they can determine whether the defrosting ball 5 is moving normally, decelerating, or completely stuck (frost blockage), thereby triggering coordinated defrosting and accurately starting the vibration and heating functions of the corresponding section.

[0031] In one alternative embodiment, the vibration drive assembly 3 includes a lifting chamber 31 disposed outside one side of the device housing 1. The lifting chamber 31 is provided with a lead screw assembly, which is connected to the vibration coil ring 35. The lead screw assembly is configured to drive the vibration coil ring 35 to move up and down along the axial direction of the cold trap tube 6 and to stop at a designated position of the frost plug.

[0032] Specifically, the lead screw assembly includes a lead screw 33, a positioning motor 32, and a connecting block 34. The lead screw 33 is installed in the lifting chamber 31 via bearings and is driven by the output shaft of the positioning motor 32. The connecting block 34 is threaded onto the lead screw 33, and a vibration coil ring 35 is installed on the connecting block 34. Based on the location of the frost plug by the Hall sensor 231, the output shaft of the positioning motor 32 drives the lead screw 33 to drive the vibration coil ring 35 to the designated position of the frost plug. The vibration coil ring 35 is arranged around the outside of the defrosting assembly 2 and includes 4 sets of focusing coils with a working frequency of 20kHz-100kHz. Without causing significant thermal and electromagnetic interference to the entire system, the defrosting balls 5 apply extremely high, focused impact force to the local area where the frost plug occurs to break and peel off the stubborn frost layer.

[0033] In this embodiment, refer to Figure 8 As shown, the defrosting ball 5 has a three-layer composite structure, which includes a magnetic core 51, a counterweight 52 and a shell 53 from the inside out. The magnetic core 51 is a neodymium iron boron permanent magnet, which uses radial NSN tripolar magnetization to generate an extremely strong magnetic field in a very small volume. This ensures that even with the cold trap tube 6 and the coil layer as a gap, the magnetic force between it and the external drive / vibration coil is strong enough to drive it to move upward in the spiral guide groove 61. Furthermore, the radial NSN tripolar magnetization makes the magnetic field distribution around the defrosting ball 5 no longer uniform, but stronger on one side and weaker on the other, generating an asymmetrical magnetic field. When the pulsed magnetic field generated by the external vibration coil ring 35 acts on this asymmetrical magnetic field, it will generate an unbalanced force on the defrosting ball 5. This force will efficiently induce the high-frequency oscillation and vibration of the defrosting ball 5 instead of smooth movement, converting electromagnetic energy into mechanical vibration energy, thereby realizing the above-mentioned function of vibration breaking local frost plugs. The counterweight 52 is made of tungsten alloy and is eccentrically positioned on one side of the magnetic core 51. The high-density counterweight 52 is fixedly installed on one side of the magnetic core 51, rather than the center, which disrupts the center of mass balance of the defrost ball 5. When the defrost ball 5 is driven to rotate, this eccentric mass will generate a huge centrifugal force, causing the movement of the defrost ball 5 to change from "smooth rolling" to "violent vibration with huge impact force", just like a miniature vibrating hammer, which enhances the effect of breaking the defrost plug.

[0034] The outer shell 53 is made of stainless steel, providing structural strength, rigidity and corrosion resistance. Its surface is coated with a diamond-like carbon coating 54, which has a high hardness, second only to natural diamonds. This coating can effectively resist the wear of frost and ice, ensuring that the size of the ball remains unchanged and its function is not diminished after long-term use. At the same time, the surface of the coating is smooth, reducing the movement resistance of the defrosting ball 5. In addition, the coating has extremely low surface energy, making it difficult for frost to adhere firmly to its surface, preventing the defrosting ball 5 from freezing itself. This ensures that its vibration energy can be efficiently transferred to the frost layer on the inner wall of the cold trap tube 6.

[0035] In this embodiment, the rollback channel 62 has a straight pipe section 621 and a top arc-shaped section 622 and a bottom arc-shaped section 623 located at the top and bottom ends of the straight pipe section 621. The top arc-shaped section 622 is connected to the top end of the spiral guide groove 61, and the bottom arc-shaped section 623 is connected to the bottom end of the spiral guide groove 61. By setting the arc-shaped section, the movement of the defrosting ball 5 at the transition connection position between the spiral guide groove 61 and the rollback channel 62 can be smoother.

[0036] In one optional embodiment, a replacement box 63 is connected in series between the bottom arc-shaped section 623 and the straight section 621 of the rollback channel 62. The replacement box 63 is provided with an installation port for installing or removing the defrosting balls 5. Furthermore, a magnetic block is provided on the inner wall of the replacement box 63. The surface of the magnetic block is arc-shaped. The channel wall formed inside the replacement box 63 is smoothly transitioned to the straight section 621 and the bottom arc-shaped section 623 of the rollback channel 62, so as not to affect the rolling passage of the defrosting balls 5. Through the replacement box 63, the defrosting balls 5 can be easily added, removed, or replaced. On the one hand, the magnetic block can reduce the speed of the defrosting balls 5 during the fall process, avoiding the impact damage caused by the defrosting balls 5 falling rapidly back to the bottom of the cold trap tube 6 under the action of gravity. On the other hand, it can effectively adsorb the metal powder caused by the wear of the defrosting balls 5 after long-term use, avoiding contamination of the dry air inside the cold trap tube 6.

[0037] For example, the gas drying device includes two cold trap tubes 6, both of which are fluid pipes with a length of 800 mm, an outer diameter of 1 / 8 inch, and a volume of 3 ml, capable of rapid cooling or heating, and equipped with a compressor capable of cooling down to -70°C. The working principle of the cold trap tube 6 of the gas drying device is as follows: at least one specially made three-layer composite defrosting ball 5 is driven by electromagnetic force to continuously circulate in the spiral guide groove 61 on the inner wall of the cold trap tube 6, thereby achieving mechanical scraping and defrosting of the tube wall; the device accurately positions the defrosting ball 5 in real time through the surrounding monitoring layer 23; when the defrosting ball 5 is detected to be stuck due to frost blockage, the system will coordinate to start the vibration drive component 3 and the heating coil layer 24 to perform local micro-heating and focused high-frequency vibration on the stuck part to break the stubborn frost layer, thereby maintaining the continuous and efficient operation of the cold trap tube 6.

[0038] Compared with existing technologies, the gas drying device provided in this embodiment uses electromagnetically driven defrosting balls 5 for mechanical defrosting, and performs brief, localized micro-heating and high-frequency vibration only at the frost plug, which greatly reduces energy consumption and avoids the huge energy waste caused by overall heating. This localized action mode only generates a very small range of thermal disturbances, preventing drastic fluctuations in the overall temperature of the cold trap tube 6, ensuring the continuity of the process and the stability of sample capture, and significantly shortening the cooling recovery time. The synergistic effect of mechanical vibration and thermal assistance can quickly break up or even prevent the formation of thick frost layers, greatly improving the defrosting speed and significantly enhancing the ability to cope with heavy frost. This solution reduces the number of start-ups and shutdowns of heating elements and the working time, and mainly relies on non-contact electromagnetic drive and robust defrosting balls 5, resulting in high system reliability and significantly reduced maintenance requirements and costs. It avoids local overheating, fundamentally eliminating the potential risk of carbonization of insulation materials or fire caused by continuous heating, and fully ensuring safety.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A gas drying treatment apparatus, characterized in that, include: The cold trap tube (6) is located inside the device housing (1), and the inner wall of the cold trap tube (6) is provided with a spiral guide groove (61). The rollback channel (62) is located in the space between the device housing (1) and the cold trap tube (6). The top and bottom ends of the rollback channel (62) are respectively connected to the top and bottom ends of the spiral guide groove (61) to form a continuous closed loop channel. At least one defrosting ball (5) is movably disposed within the continuous closed-loop channel and is capable of cyclic movement within the continuous closed-loop channel; The defrosting assembly (2) is arranged around the outside of the cold trap tube (6) and has a shielding layer (21), a rotary drive coil layer (22), a monitoring layer (23), and a heating coil layer (24) arranged sequentially from the outside to the inside. The rotary drive coil layer (22) is used to electromagnetically drive the defrosting ball (5) to move from the lower end to the upper end of the cold trap tube (6) along the spiral guide groove (61). The monitoring layer (23) is used to monitor the position of the defrosting ball (5) in real time. Vibration drive assembly (3) is used to drive the defrost ball (5) to vibrate at high frequency to remove local frost from the inner wall of the cold trap tube (6).

2. The gas drying treatment apparatus as described in claim 1, characterized in that, Both ends of the cold trap tube (6) are provided with flanges (64), and multiple cold trap tubes (6) are connected in series through the flanges (64). Preferably, the inner wall of the cold trap tube (6) is also provided with an elastic retainer (4).

3. The gas drying treatment apparatus as described in claim 1, characterized in that, The shielding layer (21), the rotary drive coil layer (22), the monitoring layer (23) and the heating coil layer (24) are filled with a polyimide film between adjacent layers, and the device housing (1) is made of permalloy. Preferably, the interior of the device housing (1) is covered with an aerogel felt.

4. The gas drying treatment apparatus as described in claim 1, characterized in that, The rotary drive coil layer (22) is composed of a three-phase Litz wire winding; The heating coil layer (24) is a closely packed spiral nickel-chromium alloy foil.

5. The gas drying treatment apparatus as described in claim 1, characterized in that, The vibration drive assembly (3) includes a lifting chamber (31) disposed outside one side of the device housing (1). The lifting chamber (31) is equipped with a lead screw assembly, which is connected to a vibration coil ring (35). The lead screw assembly is configured to drive the vibration coil ring (35) to move up and down along the axial direction of the cold trap tube (6) and to stop at a designated position of the frost plug. Preferably, the lead screw assembly has a lead screw (33), a positioning motor (32), and a connecting block (34); wherein, the lead screw (33) is installed in the lifting chamber (31) by bearings, and the lead screw (33) is driven by the output shaft of the positioning motor (32); the lead screw (33) is threadedly connected to the connecting block (34), and a vibration coil ring (35) is installed on the connecting block (34).

6. The gas drying treatment apparatus as described in claim 5, characterized in that, The vibration coil ring (35) is located outside the defrosting assembly (2) and operates at a frequency of 20kHz-100kHz.

7. The gas drying treatment apparatus as described in claim 1, characterized in that, The rollback channel (62) has a straight pipe section (621) and a top arc-shaped section (622) and a bottom arc-shaped section (623) located at the top and bottom ends of the straight pipe section (621). The top arc-shaped section (622) is connected to the top end of the spiral guide groove (61), and the bottom arc-shaped section (623) is connected to the bottom end of the spiral guide groove (61).

8. The gas drying treatment apparatus as described in claim 7, characterized in that, A replacement box (63) is connected in series between the bottom arc-shaped section (623) and the straight pipe section (621) of the rollback channel (62), and the inner wall of the replacement box (63) is provided with magnetic blocks.

9. The gas drying treatment apparatus as described in claim 1, characterized in that, Several Hall sensors (231) are uniformly arranged along the axial direction on the monitoring layer (23), and each Hall sensor (231) is provided with a permalloy shield.

10. The gas drying treatment apparatus as described in claim 1, characterized in that, The defrosting ball (5) has a three-layer composite structure, which includes a magnetic core (51), a counterweight (52) and a shell (53) from the inside out. The magnetic core (51) is a neodymium iron boron permanent magnet, which is magnetized by a radial NSN three-pole magnetization. The counterweight (52) is made of tungsten alloy and is eccentrically positioned on one side of the magnetic core (51); The outer shell (53) is made of stainless steel and its surface is coated with a diamond-like coating (54).

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