Salt grain adhesion prevention structure for salt extraction process

Abstract

The application discloses a salt particle adhesion prevention structure for a salt extraction process and belongs to the field of salt extraction process equipment. The structure comprises a rotating shaft installed at the center of a liquid phase discharge pipe, a rotating assembly fixedly connected to the top of the rotating shaft, a rotating rod, a spiral scraper and a rotating frame arranged on the rotating rod, the spiral scraper being sleeved on the rotating rod and the bottom end of the spiral scraper being fixedly connected with the rotating rod, the top end of the spiral scraper being slidably connected with the rotating rod, the outer edge of the spiral scraper being tightly attached to the inner wall of the liquid phase discharge pipe, and a drainage strip being arranged on the rotating frame and being attached to the inner wall of a cyclone separation cylinder. The spiral scraper, the top rod and the rotating frame are arranged to axially scrape the inner wall of the liquid phase discharge pipe and to specifically and strongly strip the inner wall, the inner wall of the cyclone separation cylinder has both a conventional drainage function and a temporary strong scraping function, the inner wall of the cyclone separation cylinder is prevented from being scratched by long-term strong scraping, and the service life of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of salt extraction equipment, and in particular to a structure for preventing salt particles from sticking together in a salt extraction process. Background Technology

[0002] The HPF ammonia desulfurization process in coking is currently the mainstream technology for purifying coke oven gas in China. During operation, the desulfurization liquid continuously generates byproduct salts such as ammonium thiocyanate and ammonium thiosulfate. When the cumulative concentration of these byproduct salts exceeds 250 g / L, it leads to a decrease in catalyst activity, an increase in the viscosity of the desulfurization liquid, and a significant drop in the desulfurization efficiency of the coal gas. To address this, the industry commonly employs a "salt extraction process" involving vacuum evaporation concentration, cooling crystallization, and solid-liquid separation to recover the byproduct salts and ensure the long-term stable operation of the desulfurization system.

[0003] The existing vacuum salt extraction process is as follows: desulfurization wastewater is preheated and then enters a concentration kettle, where it is evaporated, concentrated, and crystallized under negative pressure. The high-salt mother liquor enters the crystallization separation process to extract by-product salt. The brine vapor generated by evaporation in the concentration kettle directly enters the condenser for condensation, generating a clear salt extraction liquid, which is then returned to the desulfurization system for recycling. To address the issue of "excessively high salt content in the vapor phase of the brine vapor directly entering the condenser during the salt extraction process," the applicant has installed a cyclone separator at the vapor phase discharge end of the concentration kettle as a desalination device. This separates the salt-laden vapor phase into a salt-laden liquid phase and a desalinated vapor phase, achieving a dual closed-loop process where "salt is not lost and water can be reused."

[0004] The existing technology has the following core defects: (1) The high salt components intercepted by the hydrocyclone separator will crystallize in advance at the liquid phase discharge end. At the interface of the liquid phase pipeline, coarse salt particles and pre-crystallized salt particles are prone to sticking together, causing pipeline blockage. In actual operation, it was found that the conventional rotating scraper can easily cause the precipitated salt particles to be pressed tightly against the inner wall of the pipeline to form "hard scale", which is even more difficult to clean. (2) The salt-containing liquid phase has a wall-hanging phenomenon on the inner wall of the hydrocyclone separator, which requires the use of diversion methods and it is difficult to clean the salt precipitated on the inner wall in real time. Summary of the Invention

[0005] To address the problem that conventional scrapers installed at the liquid phase discharge end of a cyclone separator cause salt particles to be squeezed and scaled, this invention provides a structure to prevent salt particle adhesion in a salt extraction process. This structure can effectively deal with adhered "hard scale," and can perform axial scraping and strong peeling, while also providing normal flow guidance and temporary strong scraping functions for the inner wall of the cyclone separator.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A structure for preventing salt particles from sticking together in a salt extraction process is provided at the liquid phase discharge end of a hydrocyclone separator in the salt extraction process. It includes a rotating shaft installed at the center of the liquid phase discharge pipe, and a rotating assembly is fixedly connected to the top of the rotating shaft. The rotating assembly includes a rotating rod, and a spiral scraper and a rotating frame are provided on the rotating rod. The spiral scraper is sleeved on the rotating rod and the bottom end of the spiral scraper is fixedly connected to the rotating rod. The top end of the spiral scraper is slidably connected to the rotating rod, and the outer edge of the spiral scraper is in close contact with the inner wall of the liquid phase discharge pipe. The rotating frame is equipped with guide strips that fit against the inner wall of the cyclone separator.

[0007] As another optimized solution for the anti-salt particle adhesion structure in the above-mentioned salt extraction process, the rotating frame includes a movable part, a connecting part, and a mounting part; The movable part is slidably engaged in a groove opened on an extension block, and the extension block is horizontally set on the top of the rotating rod; After the inclined grooves extend from both sides of the active part, they are fixedly connected to the mounting part through the connecting part, and the mounting part is fixedly connected to the drainage strip; The bottom end of the extended part of the movable section abuts against a top rod that is fixedly connected to the top of the spiral scraper.

[0008] As another optimized solution for the structure to prevent salt particles from sticking together in the above-mentioned salt extraction process, a reinforcing part is fixedly connected between the movable part and the mounting part, and the reinforcing part and the connecting part have an included angle of 70°-100°.

[0009] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, there are two connecting parts and two reinforcing parts, which extend from the two protruding parts of the movable part to both sides of the mounting part.

[0010] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, the extended portion of the movable part extends beyond both sides of the rotating rod.

[0011] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, the extension line of the inclined groove has an angle of 20°-40° with the conical part of the cyclone separator.

[0012] As another optimized solution for the structure to prevent salt particles from sticking together in the above-mentioned salt extraction process, there are multiple rotating frames and extension blocks, which are evenly distributed in a ring around the rotating rod as the axis.

[0013] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, the projection of the mounting part and the diversion strip on the rotating rod is a vertical line, an oblique line or an arc.

[0014] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, the guide strip is elastic and has a triangular cross-section.

[0015] As another optimized solution for the structure preventing salt particles from sticking together in the above-mentioned salt extraction process, the spiral scraper is made of spring steel.

[0016] The present invention has the following beneficial effects: 1) The spiral scraper can scrape off the hard scale that adheres between the inner wall and the scraper while scraping and forcibly draining the liquid phase discharge pipe, thus achieving strong peeling and avoiding secondary adhesion. 2) The top rod, rotating frame and flow guide strip are set up to continuously guide the liquid phase on the bottom inner wall of the cyclone separator. When the spiral scraper performs axial scraping, the flow guide strip can be kept close to the inner wall of the cyclone separator. This combines the flow guiding function during long-term use with the temporary strong scraping function, avoiding long-term strong scraping that scratches the inner wall of the cyclone separator and improving the service life of the device.

[0017] The additional technical features and advantages of the present invention will become more apparent from the following description, or may be learned through practice of the invention. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the cyclone separator in this invention; Figure 2 This is a structural diagram of the rotating assembly, spiral scraper, and rotating frame; Figure 3 This is a structural diagram of the rotating assembly, spiral scraper, and push rod; Figure 4 This is a structural diagram of the rotating assembly, rotating frame, and drainage strip; Figure 5 This is a schematic diagram of the rotating frame in this invention; Figure 6 This is a schematic diagram showing the cooperation between the extension block, the top rod, and the rotating frame in this invention; Figure 7 This is a schematic diagram showing that the mounting part in this invention is a straight line; Figure 8 This is a schematic diagram showing the mounting portion as an oblique line in this invention; Figure 9 This is a schematic diagram of the mounting part being an arc in this invention.

[0019] The reference numerals in the attached drawings are explained as follows: 1. Cyclone separator, 2. Liquid phase discharge pipe, 3. Rotating shaft, 4. Rotating assembly, 401. Rotating rod, 402. Extension block, 403. Inclined groove, 5. Spiral scraper, 6. Top rod, 7. Rotating frame, 701. Movable part, 702. Connecting part, 703. Reinforcing part, 704. Mounting part, 8. Drainage strip, 9. Motor, 10. Support. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. Parts not explained in the following embodiments of the present invention, such as the separation process of each component in the salt extraction process, the model and working principle of the cyclone separator in the cyclone separator cylinder, etc., are all considered to be prior art known or should be known by those skilled in the art.

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown, a structure for preventing salt particle adhesion in a salt extraction process is installed at the liquid phase discharge end of a hydrocyclone separator 1 in the salt extraction process. A hydrocyclone separator body is located in the middle of the hydrocyclone separator 1. The gas phase discharged from the concentration vessel in the salt extraction process first enters the middle of the hydrocyclone separator 1. After separation by the hydrocyclone separator, the salt-containing liquid phase is separated to the lower part of the hydrocyclone separator 1, and the desalted gas phase is discharged from the upper gas phase discharge end. This device includes a rotating shaft 3 installed at the center of the liquid phase discharge pipe 2. The hydrocyclone separator 1 and the liquid phase discharge pipe 2 are fixedly connected to the outside via a bracket 10. A motor 9 is fixedly connected to the bracket 10, and the output end of the motor 9 is connected to the rotating shaft 3 via a coupling. A rotating assembly 4 is fixedly connected to the top of the rotating shaft 3, and the rotating assembly 4 includes a rotating rod 401. The rotating rod 401 is equipped with a spiral scraper 5 and a rotating frame 7. The spiral scraper 5 is made of spring steel, which has excellent elastic limit and fatigue resistance, and can meet the performance requirements of the spiral scraper 5 in repeated "forced elongation-elastic recovery" working cycles: when the spiral scraper 5 encounters hard scale and elongates axially, the high elastic limit of the spring steel ensures that the scraper does not undergo permanent plastic deformation under large deformation; when the hard scale is removed, the elastic recovery force of the spring steel makes the spiral scraper 5 quickly return to its original pitch and axial length, ensuring the working accuracy during the next scraping operation. The spiral scraper 5 and the rotating frame 7 can rotate along the inner wall of the cyclone separator 1 and its liquid phase discharge pipe 2 as the rotating shaft 3 and the rotating assembly 4 rotate, playing the role of guiding and scraping the salt-containing liquid phase and salt particles. like Figure 3As shown, the spiral scraper 5 is sleeved on the rotating rod 401, and the bottom end of the spiral scraper 5 is fixedly connected to the rotating rod 401. The top end of the spiral scraper 5 is slidably connected to the rotating rod 401. The outer edge of the spiral scraper 5 is in close contact with the inner wall of the liquid phase discharge pipe 2. When the spiral scraper 5 rotates along the inner wall of the liquid phase discharge pipe 2, since the contact point between the spiral scraper 5 and the inner wall of the liquid phase discharge pipe 2 is a spiral, a forced discharge effect can be formed in the liquid phase discharge pipe 2. The middle part of the spiral scraper 5 and the inner wall of the liquid phase discharge pipe 2 are also in close contact. The gap between the rotating rods 401 causes the spiral scraper 5 to encounter hard scale formed by salt particles during rotation. The rotational resistance causes the spiral structure to "pull apart" and be forced to extend upward, i.e., the pitch increases. Furthermore, the increased pitch of the spiral scraper 5 accumulates elastic potential energy, which generates a stronger axial scraping force on the inner wall of the liquid phase discharge pipe 2. This forcefully removes the hard scale, fundamentally preventing the salt particles from growing larger and preventing blockage or jamming of the rotating assembly 4. The "forced elongation" mechanism of the spiral scraper 5 is as follows: Since the spiral scraper 5 is sleeved on the rotating rod 401, its bottom end is fixedly connected to the rotating rod 401, and its top end is slidably connected to the rotating rod 401, forming a spiral spring-like structure. During rotation, the outer edge of the spiral scraper 5 forms a continuous spiral line contact with the inner wall of the liquid phase discharge pipe 2. When there is salt scale at a certain point on the inner wall of the liquid phase discharge pipe 2, the spiral scraper 5 that rotates to that point is subjected to the circumferential resistance of the scale. Since the spiral scraper 5 has a spiral geometry, this circumferential resistance is decomposed into a tangential component force and an axial component force along the spiral line direction. The axial component force increases the local pitch of the spiral scraper 5, which manifests as the spiral scraper 5 being forced to elongate in the axial direction. This mechanical behavior is similar to the principle of axial deformation of a helical spring when it is torn. When the helical scraper 5 encounters hard dirt and elongates axially, the contact state between the helical scraper 5 and the hard dirt changes: the original contact mode of squeezing the hard dirt with the side of the helical line is transformed into the contact mode of applying axial shear force to the hard dirt with the edge of the helical line. The direction of the force changes from radial squeezing to axial shearing, thereby achieving strong peeling of the hard dirt. The rotating frame 7 is equipped with a guide strip 8 that fits against the inner wall of the cyclone separator 1. When the guide strip 8 rotates along the inner wall of the cyclone separator 1, it can scrape the salt-containing liquid phase separated in the cyclone separator from the inner wall of the cyclone separator 1, preventing the liquid phase from forming water droplets and remaining on the inner wall of the cyclone separator 1, thus achieving a guiding effect.

[0023] In this embodiment, as Figure 5 As shown, the rotating frame 7 includes a movable part 701, a connecting part 702 and a mounting part 704. The movable part 701 is slidably engaged in a groove 403 opened on an extension block 402. The extension block 402 is horizontally arranged on the top of the rotating rod 401. After the inclined grooves 403 extend from both sides of the movable part 701, they are fixedly connected to the mounting part 704 through the connecting part 702. The mounting part 704 is fixedly connected to the guide strip 8. The sliding connection between the movable part 701 and the extension block 402 allows the rotating frame 7 to slide along the direction of the inclined groove 403, thereby changing the squeezing force between the guide strip 8 and the inner wall of the cyclone separator 1. During long-term operation, excessive squeezing force is avoided to prevent damage to the inner wall of the cyclone separator 1 or the rotating frame 7 itself, and it also has the function of scraping the inner wall of the cyclone separator 1. like Figure 2 and Figure 6 As shown, the bottom end of the extended portion of the movable part 701 abuts against a top rod 6 fixedly connected to the top of the spiral scraper 5. When the spiral scraper 5 is forced to elongate due to the pressure of the "hard scale", the top of the spiral scraper 5 is slidably connected to the rotating rod 401. Therefore, when forced to elongate, the movable part 701 can be lifted by the top rod 6. The movable part 701 moves along the inclined groove 403 and pushes the reinforcing part 703 close to the inner wall of the cyclone separator 1 through the connecting part 702. At this time, the rotating frame 7 can push the guide strip 8 to stick tightly to the inner wall of the cyclone separator 1 to perform a temporary strong scraping operation, scraping off the salt particles that have formed on the inner wall of the cyclone separator 1. This setting can prevent the cyclone separator 1 from being scraped for a long time and can also have the function of preventing salt particles from sticking to the inner wall of the cyclone separator 1, thus improving the service life of the device.

[0024] Example 2

[0025] like Figure 4 and Figure 5 As shown, the main structure of this embodiment is the same as the technical solution in embodiment 1. The difference is that a reinforcing part 703 is fixedly connected between the movable part 701 and the mounting part 704. The reinforcing part 703 and the connecting part 702 have an included angle of 70°-100°. The connecting part 702, the reinforcing part 703 and the mounting part 704 form a triangular structure, which enhances the stability of the rotating frame 7 when it rotates with the rotating component 4 and ensures the scraping and guiding effect of the guide strip 8 on the inner wall of the cyclone separator 1.

[0026] Example 3

[0027] like Figure 4 and Figure 5 As shown, the main structure of this embodiment is the same as the technical solution in embodiment 1. The difference is that there are two connecting parts 702 and two reinforcing parts 703, which extend from the two protruding parts of the movable part 701 to both sides of the mounting part 704. The setting of two connecting parts 702 and two reinforcing parts 703 on each set of rotating frames 7 can further strengthen the structural strength of the rotating frame 7 as a whole around the axis, ensure the tightness of the fit between the guide strip 8 and the inner wall of the cyclone separator 1, and ensure a stable guiding effect.

[0028] Example 4

[0029] like Figure 4 As shown, the main structure of this embodiment is the same as the technical solution in embodiment 1. The difference is that the extended part of the movable part 701 extends beyond both sides of the rotating rod 401. Since the extended part of the movable part 701 abuts against the top rod 6 below, the length of the extended part is set to be greater than the width of the rotating rod 401. This ensures that the top rod 6 will not separate from the movable part 701 when the rotating frame 7 rotates, and ensures that the rotating frame 7 can move outward when the top rod 6 is pushed up.

[0030] Example 5

[0031] like Figure 1 and Figure 6 As shown, the main structure of this embodiment is the same as the technical solution in embodiment 1. The difference is that the extension line of the inclined groove 403 has an angle of 20°-40° with the cone of the cyclone separator 1. The direction of the inclined groove 403 determines whether the guide strip 8 can stick tightly to the inner wall of the cyclone separator 1 when the movable part 701 slides in the inclined groove 403. Setting the extension line of the inclined groove 403 to have the above-mentioned angle with the cone of the cyclone separator 1 ensures that the guide strip 8 can stick tightly to the inner wall of the cyclone separator 1, and also ensures that the top rod 6 can lift the movable part 701 to move along the inclined groove 403.

[0032] Example 6

[0033] like Figure 6 As shown, the main structure of this embodiment is the same as the technical solution in embodiment 1. The difference is that there are multiple rotating frames 7 and extension blocks 402, and multiple rotating frames 7 and extension blocks 402 correspond one-to-one. The shape of the rotating rod 401 is a regular polygon, and the number of its sides increases with the number of extension blocks 402. However, it is necessary to consider that when the spiral scraper 5 is forced to extend, it can lift all rotating frames 7 and guide strips 8 through the top rod 6. The rotating frames 7 are evenly distributed in a ring around the rotating rod 401 as the axis. The arrangement of multiple rotating frames 7 can ensure the guiding effect of the guide strips 8 on the inner wall of the cyclone separator 1. Even if some guide strips 8 have gaps with the inner wall of the cyclone separator 1, the remaining guide strips 8 can still play a guiding effect. Furthermore, when the guide strips 8 are in close contact with the inner wall of the cyclone separator 1, the arrangement of multiple rotating frames 7 is conducive to the complete coverage of the inner wall of the cyclone separator 1 by the guide strips 8.

[0034] In this embodiment, as Figure 4 and Figure 6 As shown, the guide strip 8 is elastic and has a triangular cross-section. One side of the guide strip 8 is attached to the inner wall of the cyclone separator 1, which can reduce the contact area during flow guidance. When the rotating frame 7 is close to the inner wall of the cyclone separator 1, it can be deformed by pressure, thus playing the role of guiding and scraping at the same time, and preventing vibration during rotation and scraping.

[0035] In this embodiment, as Figure 7 , Figure 8 and Figure 9 As shown, the projections of the mounting part 704 and the guide bar 8 on the rotating rod 401 are vertical lines, oblique lines, or arcs. The vertical line guide bar only produces a tangential scraping effect, with the weakest guiding effect, but the simplest structure. The oblique or arc-shaped guide bar 8, when rotating around the axis, can form a vertical scraping force on the liquid phase on the inner wall of the cyclone separator 1, further improving the guiding effect.

[0036] Working principle: During the desalination operation, the motor 9 is kept on. The motor 9 drives the rotating component 4 to rotate through the rotating shaft 3. The rotating component 4 drives the spiral scraper 5 to rotate synchronously with the rotating frame 7, so as to process the liquid phase separated by the hydrocyclone separator in the hydrocyclone separator cylinder 1. In normal operating conditions: The outer edge of the spiral scraper 5 rotates close to the inner wall of the liquid phase discharge pipe 2. Because the contact point is a spiral, the rotation will generate a downward forced propulsion force on the salt particles and liquid in the pipe, ensuring smooth discharge of obstacles and avoiding accumulation that may be caused by natural gravity flow. The guide strip 8 on the rotating frame 7 rotates close to the inner wall of the cyclone separator 1, continuously scraping off the tiny salt-containing liquid droplets thrown by the cyclone separator against the inner wall of the cyclone separator 1, preventing the liquid droplets from remaining and forming "water droplets", allowing the liquid phase and salt to flow smoothly to the liquid phase discharge pipe 2.

[0037] When salt particles adhere to the inner wall of liquid phase discharge pipe 2, forming "hard scale": When the spiral scraper 5 encounters stubborn salt deposits during rotation, the deposits create a reverse resistance on the scraper. Because the spiral scraper 5 is spiral in shape and its tip is slidable, this resistance forces the pitch of the spiral scraper 5 at that point to increase, causing the spiral scraper 5 to be forced to extend upward along the axial direction. This active extension changes the contact angle and pressure between the scraper and the deposits, instantly generating a stronger axial shear force to scrape away the deposits axially, fundamentally preventing deposit accumulation and effectively avoiding jamming of the rotating component 4 or motor overload. At the same time, when the spiral scraper 5 extends upward due to encountering hard scale, the top rod 6 fixed on its top is lifted up. The top rod 6 lifts the movable part 701 of the rotating frame 7. The movable part 701 will generate a radial outward component force along the direction of the inclined groove 403, thereby pushing the connecting part 702 and the mounting part 704 to move outward, so that the guide strip 8 is firmly attached to the inner wall of the cyclone separator 1. At this time, the guide strip 8 switches from "normal flow guidance" to "powerful scraping mode" to temporarily scrape the salt particles that have adhered to the cylinder wall due to long-term operation with high intensity. Once the hard scale is removed, the resistance experienced by the spiral scraper 5 disappears, the spiral scraper 5 shortens axially to return to its original shape, the push rod 6 descends accordingly, the movable part 701 slides down along the inclined groove 403 to reset, the pressure between the drain strip 8 and the inner wall automatically decreases, and the operating state returns to normal.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A structure for preventing salt particle adhesion in a salt extraction process, disposed at the liquid phase discharge end of a hydrocyclone separator (1) in the salt extraction process, characterized in that: It includes a rotating shaft (3) installed at the center of the liquid phase discharge pipe (2), and a rotating assembly (4) is fixedly connected to the top of the rotating shaft (3). The rotating assembly (4) includes a rotating rod (401), and a spiral scraper (5) and a rotating frame (7) are provided on the rotating rod (401). The spiral scraper (5) is sleeved on the rotating rod (401) and the bottom end of the spiral scraper (5) is fixedly connected to the rotating rod (401). The top end of the spiral scraper (5) is slidably connected to the rotating rod (401). The outer edge of the spiral scraper (5) is in close contact with the inner wall of the liquid phase discharge pipe (2). The rotating frame (7) is provided with a guide strip (8) that fits against the inner wall of the cyclone separator (1).

2. The anti-salt particle adhesion structure for salt extraction process according to claim 1, characterized in that: The rotating frame (7) includes a movable part (701), a connecting part (702), and a mounting part (704). The movable part (701) is slidably engaged in the inclined groove (403) opened on the extension block (402), and the extension block (402) is horizontally arranged on the top of the rotating rod (401); The inclined grooves (403) extend from both sides of the active part (701) and are fixedly connected to the mounting part (704) through the connecting part (702). The mounting part (704) is fixedly connected to the drain strip (8). The bottom end of the extended part of the active section (701) abuts against a top rod (6) that is fixedly connected to the top of the spiral scraper (5).

3. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: A reinforcing part (703) is fixedly connected between the movable part (701) and the mounting part (704), and the reinforcing part (703) and the connecting part (702) have an included angle of 70°-100°.

4. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: There are two connecting parts (702) and reinforcing parts (703), which extend from the two protruding parts of the movable part (701) to both sides of the mounting part (704).

5. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: The extended portion of the movable part (701) extends beyond both sides of the rotating rod (401).

6. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: The extension line of the inclined groove (403) has an angle of 20°-40° with the cone of the cyclone separator (1).

7. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: The rotating frame (7) and the extension block (402) are multiple and are evenly distributed in a ring around the rotating rod (401) as the axis.

8. The anti-salt particle adhesion structure for salt extraction process according to claim 2, characterized in that: The projection of the mounting part (704) and the drainage strip (8) onto the rotating rod (401) is a vertical line, an oblique line, or an arc.

9. The anti-salt particle adhesion structure for salt extraction process according to claim 1, characterized in that: The drainage strip (8) is elastic and has a triangular cross-section.

10. The anti-salt particle adhesion structure for salt extraction process according to claim 1, characterized in that: The spiral scraper (5) is made of spring steel.

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