An evaporator with a liquid droplet separation structure

By designing an evaporator with a droplet separation structure and utilizing a combination of a flow-guiding adsorption cone assembly and an adsorption assembly, multiple separations and recovery of droplets in the steam are achieved. This solves the problems of incomplete droplet separation and high energy consumption in evaporators, and improves steam purity and equipment efficiency.

CN122624907APending Publication Date: 2026-08-25HUBEI KAIDA CRYSTALLIZATION EQUIPMENT CO LTD
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Patent Information

Application Number
CN202611059274.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-16
Publication Date
2026-08-25

AI Technical Summary

Technical Problem

Existing evaporators suffer from problems such as incomplete separation, high energy consumption, large equipment size, and high cost when dealing with tiny droplets entrained in steam. They are particularly ineffective in scenarios with high droplet loads or high requirements for steam purity.

Method used

An evaporator with a droplet separation structure was designed. By combining a flow-guiding adsorption cone assembly and an adsorption assembly, and by using an adjustable exhaust channel and an electric push rod to adjust the steam path, multiple separations and recovery of droplets in the steam can be achieved.

Benefits of technology

It effectively removes liquid droplets from steam, improves steam purity, reduces energy consumption, reduces equipment size and cost, and facilitates adjustment of separation intensity and efficiency according to needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of evaporators, and discloses an evaporator with a liquid droplet separation structure, which comprises an evaporation heating cylinder, a heating assembly is fixedly connected to the bottom of the evaporation heating cylinder, a first cone is fixedly connected to the top of the evaporation heating cylinder, an exhaust port is fixedly connected to the top of the first cone, a flow guide adsorption cone assembly is fixedly connected inside the evaporation heating cylinder, an adsorption assembly is fixedly connected to the top of the flow guide adsorption cone assembly, the flow guide adsorption cone assembly comprises a first positioning ring, and a rotary positioning ring is rotationally connected to the top of the first positioning ring. Through the arrangement of the flow guide adsorption cone assembly, the range of the exhaust groove through which steam can pass can be adjusted by adjusting the staggered position between the second cone and the rotary positioning ring, the steam exhaust efficiency is facilitated to be adjusted, the liquid droplet filtering step and the moving track of the steam are facilitated to be adjusted according to actual processing requirements, and the user is facilitated to make adjustment according to actual processing requirements.
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Description

Technical Field

[0001] This invention relates to the field of evaporator technology, specifically to an evaporator with a droplet separation structure. Background Technology

[0002] Evaporators are a widely used core piece of equipment in many industrial fields, including chemical, pharmaceutical, food processing, and wastewater treatment. Their main function is to vaporize the solvent in a solution through heating, thereby concentrating the solute or recovering the solvent. However, in actual evaporation operations, the generated vapor often carries a large number of tiny droplets, which may contain the target solute, impurities, or corrosive components. If this vapor containing droplets is directly introduced into the subsequent condensation system or released into the atmosphere without effective treatment, it will not only cause product loss and reduce separation purity, but may also lead to pipeline corrosion, decreased efficiency of the vacuum system, and even environmental pollution problems.

[0003] To address these issues, the industry has attempted to extend the steam path by adding multiple layers of baffles or increasing the height of the separation chamber. However, this often leads to an increase in the overall size of the evaporator, higher manufacturing costs, and is difficult to implement due to space constraints in retrofitting existing equipment. Furthermore, simply extending the path without optimizing the local velocity field and direction of the steam flow cannot significantly improve the capture rate of small-diameter droplets. More critically, existing technologies generally lack an integrated droplet separation structure that can simultaneously achieve both "adjustable steam channel area" and "variable steam movement path." This results in evaporators facing high droplet loads or high steam purity requirements either exhibiting incomplete separation due to overly unobstructed channels or excessive resistance and increased energy consumption due to overly narrow channels. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an evaporator with a droplet separation structure, which has advantages such as adjustable filtration intensity and liquid recovery, thus solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an evaporator with a droplet separation structure, comprising an evaporation heating cylinder, a heating component fixedly connected to the bottom of the evaporation heating cylinder, a first cone fixedly connected to the top of the evaporation heating cylinder, a discharge port fixedly connected to the top of the first cone, a flow guiding adsorption cone assembly fixedly connected inside the evaporation heating cylinder, an adsorption component fixedly connected to the top of the flow guiding adsorption cone assembly, the flow guiding adsorption cone assembly comprising a first positioning ring, a rotating positioning ring rotatably connected to the top of the first positioning ring, a second cone fixedly connected to the top of the first positioning ring, and a third cone fixedly connected to the top of the rotating positioning ring.

[0006] Furthermore, the evaporation heating cylinder includes a cylinder body, a sealing arc plate is fixedly connected to the inner wall of the cylinder body, and a positioning notch is provided on the inner side of the cylinder body.

[0007] Furthermore, a fixing block is fixedly connected to the inner wall of the main body of the cylinder, a motor is fixedly connected to the side of the fixing block away from the main body of the cylinder, a gear is fixedly connected to the output shaft of the motor, and a positioning bearing is fixedly connected to the outer side of the first positioning ring.

[0008] Furthermore, an internal gear ring is fixedly connected to the inner side of the first positioning ring, and the teeth on the inner side of the internal gear ring mesh with the teeth on the outer side of the gear. The tops of the second cone and the third cone are both provided with exhaust grooves.

[0009] Furthermore, the adsorption assembly includes a flow guide hood, an electric push rod is fixedly connected to the top of the flow guide hood, a positioning circular plate is fixedly connected to the top of the electric push rod, a fixing plate is fixedly connected to the outer side of the positioning circular plate, a first U-shaped positioning block is fixedly connected to the bottom of the fixing plate, a linkage rod is rotatably connected to the inner side of the first U-shaped positioning block, and a second U-shaped positioning block is rotatably connected to the side of the linkage rod away from the first U-shaped positioning block.

[0010] Furthermore, a support positioning column is fixedly connected to the inner side of the flow guide, a spring tube is fixedly connected to the outer side of the flow guide, a flow guide arc plate is fixedly connected to the side of the spring tube away from the flow guide, and a telescopic arc plate is telescopically connected to the side of the flow guide arc plate away from the spring tube.

[0011] Furthermore, the top of the first positioning ring is provided with an annular positioning notch, the size of the annular positioning notch of the first positioning ring is clearance-fitted with the cross-sectional size of the rotating positioning ring, the first positioning ring and the rotating positioning ring are connected by a bearing, and the first positioning ring and the cylinder body are connected by a positioning bearing.

[0012] Furthermore, both the second and third cones are conical, and there is a clearance fit between the second and third cones. The cross-sectional dimensions of the positioning notch are also clearance-fitted with the cross-sectional dimensions of the first positioning ring, the positioning bearing, and the rotating positioning ring.

[0013] Furthermore, the axis of the second cone overlaps with the axis of the third cone, and the axis of the shroud overlaps with the axis of the second cone.

[0014] Furthermore, the outer side of the flow guide is provided with an arc, and the projected size of the arc of the flow guide is matched with the size of the spring tube. The flow guide arc plate and the telescopic arc plate extend and retract relative to each other. An elastic element is provided between the flow guide arc plate and the telescopic arc plate, so that when an external force is applied, the telescopic arc plate will contract inward to the flow guide arc plate, and when the external force disappears, the telescopic arc plate will pop out relative to the flow guide arc plate.

[0015] Compared with the prior art, the present invention provides an evaporator with a droplet separation structure, which has the following beneficial effects: 1. This type of evaporator with a droplet separation structure, by setting a flow-guiding adsorption cone assembly, can adjust the range through which steam can pass through the exhaust channel by adjusting the staggered position between the second cone and the rotating positioning ring. This facilitates the adjustment of steam discharge efficiency, and allows for the adjustment of droplet filtration steps and steam movement trajectory according to actual processing requirements. It also allows users to adjust according to actual processing needs.

[0016] 2. This type of evaporator with a droplet separation structure can adjust the distance the steam travels by adjusting the angle of the positioning disc with an electric push rod, thereby increasing the distance the steam travels and effectively removing water droplets contained in the steam. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the evaporation heating cylinder of the present invention; Figure 4 This is a schematic diagram of the flow-guiding adsorption cone assembly structure of the present invention; Figure 5 This is a schematic cross-sectional view of the flow-guiding adsorption cone assembly of the present invention; Figure 6 This is a schematic diagram of the adsorption component structure of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the adsorption component of the present invention.

[0018] In the diagram: 1. Evaporation heating cylinder; 101. Cylinder body; 102. Sealing arc plate; 103. Positioning notch; 2. Heating assembly; 3. First cone; 4. Discharge port; 5. Flow guiding adsorption cone assembly; 501. First positioning ring; 502. Positioning bearing; 503. Internal gear ring; 504. Fixing block; 505. Motor; 506. Gear; 507. Second cone; 508. Rotating positioning ring; 509. Third cone; 5010. Exhaust groove; 6. Adsorption assembly; 601. Flow guide shroud; 602. Electric push rod; 603. Positioning circular plate; 604. Fixing plate; 605. First U-shaped positioning block; 606. Spring tube; 607. Flow guiding arc plate; 608. Telescopic arc plate; 609. Second U-shaped positioning block; 6010. Linkage rod; 6011. Support positioning column. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an evaporator with a droplet separation structure.

[0021] Please see Figures 1-7 An evaporator with a droplet separation structure includes an evaporation heating cylinder 1, a heating component 2 fixedly connected to the bottom of the evaporation heating cylinder 1, a first cone 3 fixedly connected to the top of the evaporation heating cylinder 1, an outlet 4 fixedly connected to the top of the first cone 3, a flow guiding adsorption cone assembly 5 fixedly connected inside the evaporation heating cylinder 1, an adsorption component 6 fixedly connected to the top of the flow guiding adsorption cone assembly 5, the flow guiding adsorption cone assembly 5 including a first positioning ring 501, a rotating positioning ring 508 rotatably connected to the top of the first positioning ring 501, a second cone 507 fixedly connected to the top of the first positioning ring 501, and a third cone 509 fixedly connected to the top of the rotating positioning ring 508.

[0022] In a preferred embodiment, the evaporation heating cylinder 1 includes a cylinder body 101, a sealing arc plate 102 is fixedly connected to the inner wall of the cylinder body 101, and a positioning notch 103 is provided on the inner side of the cylinder body 101.

[0023] In a preferred embodiment, a fixing block 504 is fixedly connected to the inner wall of the cylinder body 101, a motor 505 is fixedly connected to the side of the fixing block 504 away from the cylinder body 101, a gear 506 is fixedly connected to the output shaft of the motor 505, and a positioning bearing 502 is fixedly connected to the outer side of the first positioning ring 501.

[0024] In a preferred embodiment, an internal gear ring 503 is fixedly connected to the inner side of the first positioning ring 501. The teeth on the inner side of the internal gear ring 503 mesh with the teeth on the outer side of the gear 506. Exhaust grooves 5010 are provided at the tops of both the second cone 507 and the third cone 509. In use, the liquid to be evaporated is added to the inside of the cylinder body 101, and then the evaporation heating cylinder 1 is heated by the heating assembly 2. After the liquid inside the evaporation heating cylinder 1 is heated and evaporated, some droplets rise with the steam. At this time, the second cone 507 and the third cone 509 are staggered, so that the exhaust grooves 5010 are completely blocked. The steam then passes through the guide of the second cone 507, and the gas... When the steam passes through the inner side of the second cone 507, the droplets inside will collide with the inner wall of the second cone 507 and be adsorbed. Then the steam is transported through the conveying hole at the top of the second cone 507 to the inner side of the guide shroud 601. The steam will then collide with the inside of the guide shroud 601, separating the droplets in the steam. The steam will then continue to rise through the outside of the guide shroud 601. As it continues to rise, it will collide with the inner side of the first cone 3, removing the droplets in the steam in a preferred embodiment. After removing the droplets in the steam three times, the steam can be discharged through the outlet 4. This effectively removes the droplets that rise with the steam due to the violent movement of heated water molecules during steam generation, ensuring the purity of the steam.

[0025] In a preferred embodiment, the adsorption assembly 6 includes a flow guide 601. An electric push rod 602 is fixedly connected to the top of the flow guide 601. A positioning circular plate 603 is fixedly connected to the top of the electric push rod 602. A fixing plate 604 is fixedly connected to the outer side of the positioning circular plate 603. A first U-shaped positioning block 605 is fixedly connected to the bottom of the fixing plate 604. A linkage rod 6010 is rotatably connected to the inner side of the first U-shaped positioning block 605. A second U-shaped positioning block 609 is rotatably connected to the side of the linkage rod 6010 away from the first U-shaped positioning block 605. When the steam rises to the inner side of the flow guide 601, the electric push rod 602 extends, pushing the positioning circular plate 603 upward, which in turn drives the fixing plate 604 and the first U-shaped positioning block 605 upward. Then, the linkage rod 6010 pulls the second U-shaped positioning block 609. Under the positioning of the spring tube 606, the steam rises to the inner side of the flow guide 601. The guide arc plate 607 rotates relative to the spring tube 606. When the guide arc plate 607 rotates, the telescopic arc plate 608 will hit the inner wall of the cylinder body 101, causing the telescopic arc plate 608 to contract to the inside of the guide arc plate 607 until the angle between the guide arc plate 607 and the electric push rod 602 is an acute angle. At this time, the bottom of the telescopic arc plate 608 will fit against the inside of the cylinder body 101. Steam enters the guide arc plate 607 through the spring tube 606, and then exits through the top of the telescopic arc plate 608 after being guided by the guide arc plate 607 and the telescopic arc plate 608. In a preferred embodiment, the steam can adsorb water droplets in the steam through the inside of the guide arc plate 607 and the telescopic arc plate 608 when it is discharged, which can reduce the liquid droplet content in the steam in a preferred embodiment, making it easy to adjust the water droplet content in the steam according to actual needs.

[0026] In a preferred embodiment, a support positioning column 6011 is fixedly connected to the inner side of the flow guide 601, and a spring tube 606 is fixedly connected to the outer side of the flow guide 601. A flow guide arc plate 607 is fixedly connected to the side of the spring tube 606 away from the flow guide 601, and a telescopic arc plate 608 is telescopically connected to the side of the flow guide arc plate 607 away from the spring tube 606. When the requirement for low water droplet content in steam and high steam generation efficiency is required, the motor 505 drives the gear 506 to rotate, which in turn drives the internal gear ring 503 to rotate, causing the first positioning ring 501 to rotate. The second cone 507 rotates relative to the third cone 509, causing the exhaust groove 5010 on the outer side of the second cone 507 and the third cone 509 to overlap. At this time, the electric push rod 602 retracts, causing the positioning circular plate 603 to descend, causing the guide arc plate 607 and the telescopic arc plate 608 to rotate relative to the spring tube 606 until the telescopic arc plate 608 overlaps with the positioning notch 103. At this time, the steam can rise through the linkage rod 6010 and hit the inner side of the guide arc plate 607 and the telescopic arc plate 608, which can remove the liquid droplets in the steam. Then, the steam can be discharged through the first cone 3.

[0027] In a preferred embodiment, the top of the first positioning ring 501 is provided with an annular positioning notch, and the size of the annular positioning notch of the first positioning ring 501 is clearance-fitted with the cross-sectional size of the rotating positioning ring 508. The first positioning ring 501 and the rotating positioning ring 508 are connected by a bearing, and the first positioning ring 501 and the cylinder body 101 are connected by a positioning bearing 502. The droplets adsorbed on the inner side of the flow guide 601 will converge and fall to the outer side of the third cone 509. When the exhaust groove 5010 overlaps, the liquid can fall back to the bottom of the cylinder body 101. The droplets adsorbed by the exhaust groove 5010 can fall directly to the bottom of the inner side of the cylinder body 101, which facilitates the recovery of the adsorbed droplets.

[0028] In a preferred embodiment, both the second cone 507 and the third cone 509 are conical, and there is a clearance fit between the second cone 507 and the third cone 509. The cross-sectional dimensions of the positioning notch 103 are also clearance fit with the cross-sectional dimensions of the first positioning ring 501, the positioning bearing 502, and the rotating positioning ring 508.

[0029] In a preferred embodiment, the axis of the second cone 507 overlaps with the axis of the third cone 509, and the axis of the shroud 601 overlaps with the axis of the second cone 507.

[0030] In a preferred embodiment, the outer side of the flow guide 601 is provided with an arc, and the projected size of the arc of the flow guide 601 is matched with the size of the spring tube 606. The flow guide arc plate 607 and the telescopic arc plate 608 extend and retract relative to each other. An elastic element is provided between the flow guide arc plate 607 and the telescopic arc plate 608, so that when an external force is applied, the telescopic arc plate 608 will contract inward to the flow guide arc plate 607. When the external force disappears, the telescopic arc plate 608 will pop out relative to the flow guide arc plate 607.

[0031] Working principle: During use, the liquid to be evaporated is added to the inside of the cylinder body 101. Then, the evaporation heating cylinder 1 is heated by the heating component 2. After the liquid inside the evaporation heating cylinder 1 is heated and evaporated, the steam carries some liquid droplets upward. At this time, the second cone 507 and the third cone 509 are staggered, so that the exhaust groove 5010 is completely blocked. The steam passes through the guide of the second cone 507. When the gas passes through the inside of the second cone 507, the liquid droplets contained inside it will collide with the inner wall of the second cone 507 and be adsorbed. Then the steam passes through the second cone 507. The steam is delivered through the conveying hole at the top of the cone 507 to the inside of the guide shroud 601. In a preferred embodiment, the steam impacts the inside of the guide shroud 601, separating the droplets in the steam. The steam then continues to rise through the outside of the guide shroud 601 and impacts the inside of the first cone 3, removing the droplets in the steam in a preferred embodiment. After removing the droplets in the steam three times, the steam can be discharged through the outlet 4. This effectively removes the droplets that rise with the steam due to the violent movement of heated water molecules during steam generation, ensuring the purity of the steam. When the steam rises to the inside of the guide shroud 601, the electric push rod 602 extends to push the positioning circular plate 603 upward, which in turn drives the fixed plate 604 and the first U-shaped positioning block 605 upward. Then, the linkage rod 6010 pulls the second U-shaped positioning block 609. Under the positioning of the spring tube 606, the guide arc plate 607 rotates relative to the spring tube 606. When the guide arc plate 607 rotates, the telescopic arc plate 608 will hit the inner wall of the cylinder body 101, causing the telescopic arc plate 608 to retract inside the guide arc plate 607 until the guide arc plate 607 and the electric push rod... The included angle between 602 is an acute angle. At this time, the bottom of the telescopic arc plate 608 will fit against the inner side of the cylinder body 101. Steam enters the guide arc plate 607 through the spring tube 606, and then exits through the top of the telescopic arc plate 608 after being guided by the guide arc plate 607 and the telescopic arc plate 608. This allows the steam to adsorb water droplets in the steam through the inner side of the guide arc plate 607 and the telescopic arc plate 608 when it is discharged. This can reduce the liquid droplet content in the steam in a preferred embodiment, making it easier to adjust the water droplet content in the steam according to actual needs. When the requirement for low water droplet content in steam and high steam generation efficiency is required, the motor 505 drives the gear 506 to rotate, which in turn drives the internal gear ring 503 to rotate, causing the first positioning ring 501 to rotate. This causes the second cone 507 to rotate relative to the third cone 509, so that the exhaust groove 5010 on the outside of the second cone 507 and the third cone 509 overlaps. At this time, the electric push rod 602 retracts, causing the positioning circular plate 603 to descend, causing the guide arc plate 607 and the telescopic arc plate 608 to rotate relative to the spring tube 606 until the telescopic arc plate 608 overlaps with the positioning notch 103. At this time, the steam can rise through the linkage rod 6010 and hit the inner side of the guide arc plate 607 and the telescopic arc plate 608, which can remove the liquid droplets in the steam. Then, the steam can be discharged through the first cone 3. The droplets adsorbed inside the flow guide 601 will converge and fall to the outside of the third cone 509. When the exhaust groove 5010 overlaps, the liquid can fall back to the bottom of the cylinder body 101. The droplets adsorbed by the exhaust groove 5010 can fall directly to the bottom of the inner side of the cylinder body 101, which facilitates the recovery of the adsorbed droplets.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An evaporator with a droplet separation structure, characterized in that: The device includes an evaporation heating cylinder (1), a heating component (2) is fixedly connected to the bottom of the evaporation heating cylinder (1), a first cone (3) is fixedly connected to the top of the evaporation heating cylinder (1), an outlet (4) is fixedly connected to the top of the first cone (3), a flow guiding adsorption cone assembly (5) is fixedly connected inside the evaporation heating cylinder (1), an adsorption component (6) is fixedly connected to the top of the flow guiding adsorption cone assembly (5), the flow guiding adsorption cone assembly (5) includes a first positioning ring (501), a rotating positioning ring (508) is rotatably connected to the top of the first positioning ring (501), a second cone (507) is fixedly connected to the top of the first positioning ring (501), and a third cone (509) is fixedly connected to the top of the rotating positioning ring (508).

2. An evaporator with a droplet separation structure according to claim 1, characterized in that: The evaporation heating cylinder (1) includes a cylinder body (101), and a sealing arc plate (102) is fixedly connected to the inner wall of the cylinder body (101). A positioning notch (103) is opened on the inner side of the cylinder body (101).

3. An evaporator with a droplet separation structure according to claim 2, characterized in that: A fixing block (504) is fixedly connected to the inner wall of the cylindrical body (101). A motor (505) is fixedly connected to the side of the fixing block (504) away from the cylindrical body (101). A gear (506) is fixedly connected to the output shaft of the motor (505). A positioning bearing (502) is fixedly connected to the outer side of the first positioning ring (501).

4. An evaporator with a droplet separation structure according to claim 3, characterized in that: An internal gear ring (503) is fixedly connected to the inner side of the first positioning ring (501). The teeth on the inner side of the internal gear ring (503) mesh with the teeth on the outer side of the gear (506). The tops of the second cone (507) and the third cone (509) are both provided with exhaust grooves (5010).

5. An evaporator with a droplet separation structure according to claim 4, characterized in that: The adsorption assembly (6) includes a flow guide hood (601), an electric push rod (602) is fixedly connected to the top of the flow guide hood (601), a positioning circular plate (603) is fixedly connected to the top of the electric push rod (602), a fixing plate (604) is fixedly connected to the outer side of the positioning circular plate (603), a first U-shaped positioning block (605) is fixedly connected to the bottom of the fixing plate (604), a linkage rod (6010) is rotatably connected to the inner side of the first U-shaped positioning block (605), and a second U-shaped positioning block (609) is rotatably connected to the side of the linkage rod (6010) away from the first U-shaped positioning block (605).

6. An evaporator with a droplet separation structure according to claim 5, characterized in that: A support positioning column (6011) is fixedly connected to the inner side of the flow guide (601), and a spring tube (606) is fixedly connected to the outer side of the flow guide (601). A flow guide arc plate (607) is fixedly connected to the side of the spring tube (606) away from the flow guide (601), and a telescopic arc plate (608) is telescopically connected to the side of the flow guide arc plate (607) away from the spring tube (606).

7. An evaporator with a droplet separation structure according to claim 4, characterized in that: The top of the first positioning ring (501) is provided with an annular positioning notch. The size of the annular positioning notch of the first positioning ring (501) is clearance-fitted with the cross-sectional size of the rotating positioning ring (508). The first positioning ring (501) and the rotating positioning ring (508) are connected by a bearing. The first positioning ring (501) and the cylinder body (101) are connected by a positioning bearing (502).

8. An evaporator with a droplet separation structure according to claim 4, characterized in that: The second cone (507) and the third cone (509) are both cone-shaped, and there is a clearance fit between the second cone (507) and the third cone (509). The cross-sectional dimensions of the positioning notch (103) are clearance fit with the cross-sectional dimensions of the first positioning ring (501), the positioning bearing (502) and the rotating positioning ring (508).

9. An evaporator with a droplet separation structure according to claim 5, characterized in that: The axis of the second cone (507) overlaps with the axis of the third cone (509), and the axis of the shroud (601) overlaps with the axis of the second cone (507).

10. An evaporator with a droplet separation structure according to claim 6, characterized in that: The outer side of the flow guide (601) is provided with an arc. The projected size of the arc of the flow guide (601) is matched with the size of the spring tube (606). The flow guide arc plate (607) and the telescopic arc plate (608) extend and retract with each other. An elastic element is provided between the flow guide arc plate (607) and the telescopic arc plate (608) so that when an external force is applied, the telescopic arc plate (608) will contract towards the flow guide arc plate (607). When the external force disappears, the telescopic arc plate (608) will pop out relative to the flow guide arc plate (607).