Salt-containing solid waste separation and recovery system and method

Abstract

The invention provides a salt-containing solid waste separation and recovery system and method, and belongs to the technical field of solid-liquid separation. Comprising an outer cylinder, and an ultrasonic inner cylinder is fixedly mounted in the outer cylinder. According to the device, when a driving motor drives a stirring rod to rotate, a scraping plate is tightly attached to the inner wall of an ultrasonic inner barrel under the action of centrifugal force, does 360-degree circular motion along with a rotating plate and continuously scrapes a salt-containing material scale layer attached to the barrel wall, and equipment volume occupation and separation efficiency reduction caused by material deposition are prevented from the source; meanwhile, in the swinging process of the scraping plate, a swinging extrusion plate at one end of the scraping plate periodically compresses and extrudes an air bag, so that a negative pressure suction head generates a stable negative pressure field, thick materials, suspended particles and adhesive impurities near the cylinder wall are accurately adsorbed, and the materials are sucked into an inner cavity of a rotating plate without omission in cooperation with the conduction design of a connecting pipe and a fixing piece; the problems of material residues on the cylinder wall and loss of suspended materials in traditional equipment are effectively solved, and it is ensured that all salt-containing materials can enter the follow-up treatment process.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation technology, and in particular to a separation and recovery system and method for saline solid waste. Background Technology

[0002] In industrial processes such as high-salinity wastewater treatment, chemical crystallization, seawater desalination concentrate reuse, and salt resource recovery, salt-containing materials (such as sodium chloride and sodium sulfate) often exist in the form of high-concentration slurries or viscous suspensions. These materials are highly susceptible to forming a dense and hard salt scale layer on the inner wall of stirring, heat transfer, or separation equipment due to water evaporation, local supersaturation, or temperature gradient changes.

[0003] Traditional mixing devices typically use fixed scrapers or simple rotating blades for mixing. However, their scraping effect is limited by structural rigidity, installation gaps, and operating speed, making it difficult to achieve continuous and dynamic cleaning of the cylinder wall in the full circumference. This results in the continuous accumulation of scale, which not only occupies the effective volume and reduces heat transfer efficiency, but may also induce equipment corrosion, vibration, or even blockage. Furthermore, in high-viscosity or high-solids-content systems, some fine particles or colloidal salt-containing materials tend to adhere to the cylinder wall or suspend in the near-wall area. Traditional methods relying on gravity settling or static suction are difficult to effectively recover, resulting in material loss and fluctuations in subsequent processing load. Even if some equipment introduces a negative pressure suction structure, it is often independent of the stirring system and lacks a linkage mechanism with the rotational motion, resulting in a fixed adsorption position and unstable negative pressure, making it impossible to accurately capture viscous materials throughout the cylinder wall.

[0004] Therefore, this application provides a separation and recycling system and method for saline solid waste to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a separation and recycling system and method for saline solid waste to solve the problem that some existing equipment introduces a negative pressure suction structure, which is often independent of the stirring system and lacks a linkage mechanism with the rotational motion, resulting in a fixed adsorption position, unstable negative pressure, and inability to achieve accurate capture of viscous materials throughout the cylinder wall.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A separation and recycling system for saline solid waste includes an outer cylinder, an ultrasonic inner cylinder fixedly installed inside the outer cylinder, a heating channel for introducing a heating medium is opened between the ultrasonic inner cylinder and the outer cylinder, and a stirring rod, a cleaning component, a screening mechanism and an ultrasonic transducer are respectively installed inside the ultrasonic inner cylinder, and multiple rotating plates are fixedly installed in a circumferential array on the stirring rod. The cleaning assembly includes a scraper rotatably connected to the rotating plate, a negative pressure suction head fixedly installed at one end of the rotating plate, and a squeezing airbag connected to one side of the negative pressure suction head. The rotating plate is also equipped with a stirring wheel. The screening mechanism includes a filter plate located at the bottom of the stirring rod, the filter plate being smaller at the top and larger at the bottom; The rotating stirring rod drives the scraper to adhere to the inner wall of the ultrasonic inner cylinder and scrape off the raw materials under the action of centrifugal force. Its swing synchronously and periodically compresses and squeezes the air bag, and the negative pressure suction head sucks the material into the inner cavity of the rotating plate. The stirring wheel in the cavity moves laterally and reciprocally under the action of centrifugal force, shearing and mixing the material, and finally making the material form a high-speed oblique jet that is sprayed out from the rotating plate and directly impacts the surface of the filter plate at the bottom of the inner cylinder.

[0007] Optionally, one end of the scraper is fixedly connected to a swinging extrusion plate, and both the scraper and the negative pressure suction head are in contact with the inner wall of the ultrasonic inner cylinder. One end of the negative pressure suction head is connected to a connecting pipe, and one end of the connecting pipe is connected to a fixed plate.

[0008] Optionally, the outer wall of the fixing plate is connected to the inner wall of the rotating plate, and a threaded rod is fixedly installed at one end of the fixing plate, with a compression spring sleeved on the threaded rod.

[0009] Optionally, one end of the compression spring is connected to the stirring wheel, the inner wall of the stirring wheel is threadedly connected to the outer wall of the threaded rod, and both sides of the rotating plate are provided with downward-sloping flow holes.

[0010] Optionally, the inner wall of the filter plate is rotatably connected to the outer wall of the bottom end of the stirring rod, and the bottom of the filter plate is fixedly connected to a first conical plate by bolts.

[0011] Optionally, a second conical plate is fixedly installed on the outside of the first conical plate, and a material flow channel is formed between the first conical plate and the second conical plate.

[0012] Optionally, the height of both the filter plate and the first conical plate is lower than that of the second conical plate, so that the material flows into the material flow channel along the inclined surface of the filter plate.

[0013] Optionally, a discharge pipe is connected through one side of the second conical plate. The discharge pipe is used to output the material output from the material flow channel. A flow pipe is connected through the bottom of the first conical plate. A mounting bracket is also fixedly installed on the stirring rod by bolts. Ultrasonic transducers are fixedly installed on the mounting bracket in a circumferential array.

[0014] Optionally, a fixed cover is fixedly installed on the top of the outer cylinder, and a drive motor is fixedly installed on the top of the fixed cover. The output end of the drive motor is fixedly connected to the bottom of the stirring rod. A solid-liquid feeding pipe is opened on the top of the fixed cover. An input pipe and an output pipe are respectively connected through the two sides of the outer cylinder. The input end of the output pipe is connected to a conveying pump. The conveying pump is fixedly installed on the outer wall of the outer cylinder, and a support leg is fixedly installed at the bottom of the outer cylinder.

[0015] The present invention also provides another technical solution, a method for separating and recycling saline solid waste, comprising the following steps: S1. Add the salt-containing solid waste and an appropriate amount of water into the ultrasonic inner cylinder through the solid-liquid feeding pipe. At the same time, introduce the heating medium (such as steam or heat transfer oil) into the heating channel through the input pipe to uniformly heat the entire ultrasonic inner cylinder. S2. Activate multiple ultrasonic transducers installed on the mounting bracket to generate high-frequency ultrasonic waves, which create a cavitation effect in the liquid phase. S3. Start the drive motor to drive the stirring rod to rotate at high speed, so that the rotating plate rotates synchronously; under the action of centrifugal force, the scraper sticks to the inner wall of the ultrasonic inner cylinder and continuously scrapes off the attached material to prevent scaling; at the same time, the scraper swings and drives the squeezing air bag to compress periodically, so that the negative pressure suction head generates negative pressure and sucks the thick or sticky material near the cylinder wall into the inner cavity of the rotating plate. S4. The material sucked into the inner cavity of the rotating plate is driven by centrifugal force to push the stirring wheel to move laterally and reciprocally along the threaded rod, shearing, breaking and fully mixing the material. Then, under the combined action of pressure difference and centrifugal force, the material is ejected in the form of a high-speed oblique jet through the downward flow hole, directly impacting the surface of the filter plate below. S5. The filter plate has a conical structure with a smaller top and a larger bottom. Its surface is continuously washed by a high-speed jet. The dissolved salt solution and fine particles pass through the filter plate and flow into the flow pipe 504 for output, while larger insoluble solids are intercepted and flow into the material flow channel along the filter plate.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In this invention, when the drive motor rotates the stirring rod, the scraper adheres tightly to the inner wall of the ultrasonic inner cylinder under centrifugal force. It moves in a 360° circular motion with the rotating plate, continuously scraping away the scale layer of salt-containing materials attached to the cylinder wall. This prevents the accumulation of materials from causing equipment volume occupancy and a decrease in separation efficiency. At the same time, during the oscillation of the scraper, the oscillating extrusion plate at one end periodically compresses and extrudes the airbag, causing the negative pressure suction head to generate a stable negative pressure field. This accurately adsorbs viscous materials, suspended particles, and adhesive impurities near the cylinder wall. Combined with the conductive design of the connecting pipe and the fixing plate, the material is sucked into the inner cavity of the rotating plate without any leakage. This effectively solves the problems of material residue on the cylinder wall and loss of suspended materials in traditional equipment, ensuring that all salt-containing materials can enter the subsequent processing flow. Furthermore, the material sucked into the inner cavity of the rotating plate is driven by centrifugal force, pushing the stirring wheel to reciprocate laterally along the threaded rod. The threaded connection between the threaded rod and the stirring wheel converts the rotational motion into linear motion. The compression spring provides elastic restoring force, causing the stirring wheel to perform high-frequency reciprocating shearing action, thoroughly shearing and kneading the material, completely breaking down salt agglomerates into individual particles. At the same time, the ultrasonic transducers arranged in a circumferential array on the mounting frame generate uniform high-frequency ultrasonic waves, forming dense cavitation bubbles in the liquid phase. The micro-jet streams and shock waves generated when the bubbles burst further weaken the adhesion between the solid and liquid interfaces, accelerating the dissolution of solid salts into the liquid. The synergistic effect of mechanical shearing and ultrasonic cavitation breaks the limitations of a single treatment method, making the dissociation of salts from the liquid more thorough, laying the foundation for subsequent efficient separation.

[0017] In this invention, the material, after shearing and dispersion, is subjected to the combined action of centrifugal force and pressure difference within the rotating plate cavity. It then forms a high-speed, oblique jet through downward-sloping flow holes on both sides of the rotating plate, directly impacting the surface of the filter plate, which is wider at the bottom than the top. On one hand, the kinetic energy of the jet can scour the pores of the filter plate, impacting and dislodging fine particles embedded in the pores, dynamically preventing pore blockage and maintaining the long-term permeability of the filter plate. On the other hand, the jet flows along the inclined surface of the filter plate, accelerating solid-liquid separation in conjunction with gravity, allowing the dissolved salt solution to quickly pass through the filter plate while solid impurities are efficiently retained. Furthermore, the conical filter plate's structural design allows the filtration area to increase with height, reducing the filtration load per unit area, avoiding separation efficiency degradation caused by local overload, and ensuring a stable and efficient separation process.

[0018] In this invention, the first conical plate connected to the bottom of the filter plate and the external second conical plate form a nested flow guiding structure, and the height of the filter plate and the first conical plate is lower than that of the second conical plate, thus constructing a closed-loop channel of "filtration-guidance-diversion": after the dissolved salt solution and fine particles pass through the filter plate, they slide down along the inner wall of the first conical plate and are finally output through the flow pipe; larger insoluble solids (such as mud, sand, and impurity particles) are intercepted by the filter plate and slide down along the slope of the filter plate to the area between the first conical plate and the filter plate, and are then discharged through the discharge pipe; the height difference design structurally avoids side leakage, backflow, or cross-mixing of salt solution and insoluble solids, ensuring that the separated salt solution is not contaminated by solid impurities, and that the insoluble solids do not carry too much salt solution, thus achieving precise diversion of the two substances.

[0019] In this invention, a constant temperature environment is used to prevent secondary precipitation of salts from affecting purity. The annular heating channel between the outer cylinder and the ultrasonic inner cylinder can be circulated with a heating medium (such as steam or heat transfer oil) to achieve uniform heating of the ultrasonic inner cylinder. The heating temperature can be flexibly adjusted according to the solubility characteristics of different salts. By maintaining a suitable temperature environment, the salts are kept in a dissolved state, avoiding supersaturation precipitation due to temperature fluctuations, which would contaminate the separated salt solution. At the same time, a stable temperature environment can reduce the viscosity of the liquid phase and reduce the resistance of the liquid when passing through the filter plate, thereby improving the separation rate while ensuring separation purity. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is an overall sectional view of the present invention; Figure 3 The top view of the cleanup component in this invention; Figure 4 For the present invention Figure 3 Schematic diagram at point A in the middle; Figure 5 This is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention; Figure 6 This is a schematic diagram of the cleaning component assembly of the present invention; Figure 7 This is a schematic diagram of the screening mechanism of the present invention; Figure 8 This is a schematic diagram of the overall cutting process of the present invention.

[0022] Figure label: 100. Outer cylinder; 101. Ultrasonic inner cylinder; 102. Heating channel; 103. Input pipe; 104. Output pipe; 200. Drive motor; 300. Stirring rod; 301. Rotating plate; 400. Cleaning assembly; 401. Scraper; 402. Oscillating extrusion plate; 403. Negative pressure suction head; 404. Extrusion airbag; 405. Fixing plate; 406. Threaded rod; 407. Compression spring; 408. Stirring wheel; 500. Screening mechanism; 501. Filter plate; 502. First conical plate; 503. Second conical plate; 504. Flow pipe; 505. Discharge pipe; 600. Ultrasonic transducer.

[0023] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0024] The present invention provides a separation and recycling system and method for saline solid waste, which is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] like Figures 1 to 8 As shown, an embodiment of the present invention provides a separation and recycling system for salt-containing solid waste, including an outer cylinder 100, an ultrasonic inner cylinder 101 fixedly installed inside the outer cylinder 100, a heating channel 102 for introducing a heating medium is opened between the ultrasonic inner cylinder 101 and the outer cylinder 100, and a stirring rod 300, a cleaning component 400, a screening mechanism 500 and an ultrasonic transducer 600 are respectively provided inside the ultrasonic inner cylinder 101, and a plurality of rotating plates 301 are fixedly installed in a circumferential array on the stirring rod 300; The cleaning assembly 400 includes a scraper 401 rotatably connected to the rotating plate 301, a negative pressure suction head 403 fixedly installed at one end of the rotating plate 301, and a squeezing airbag 404 connected to one side of the negative pressure suction head 403. The rotating plate 301 is also equipped with a stirring wheel 408. The screening mechanism 500 includes a filter plate 501 located at the bottom of the stirring rod 300, and the filter plate 501 is shaped as smaller at the top and larger at the bottom; The rotating stirring rod 300 drives the scraper 401 to adhere to the inner wall of the ultrasonic inner cylinder 101 and scrape off the raw materials under the action of centrifugal force. Its swing synchronously and periodically compresses and squeezes the air bag 404, and the negative pressure suction head 403 sucks the material into the inner cavity of the rotating plate 301. The stirring wheel 408 in the cavity moves laterally and reciprocally under the action of centrifugal force, shearing and mixing the material, and finally making the material form a high-speed oblique jet that is sprayed out from the rotating plate 301 and directly impacts the surface of the filter plate 501 at the bottom of the inner cylinder.

[0026] As can be seen from the above: During operation, a heat medium is introduced into the heating channel 102 between the outer cylinder 100 and the ultrasonic inner cylinder 101 to heat the material. At the same time, the ultrasonic transducer 600 stimulates cavitation effect, promoting salt dissolution. The stirring rod 300 drives the rotating plate 301 to rotate at high speed. Under the action of centrifugal force, the scraper 401 is pressed tightly against the inner cylinder wall, continuously scraping off the attached material and preventing scaling. During the rotation, the oscillation of the scraper 401 synchronously and periodically compresses and squeezes the air bag 404, forming a negative pressure. The negative pressure suction head 403 removes thick or adherent substances near the cylinder wall. The material is drawn into the inner cavity of the rotating plate 301; the stirring wheel 408 inside the cavity moves laterally and reciprocally under the drive of centrifugal force, shearing and fully mixing the drawn material. Then, under pressure and centrifugal action, the material is ejected in the form of a high-speed oblique jet, directly impacting the surface of the filter plate 501 with a structure that is smaller at the top and larger at the bottom. This jet not only enhances the filtration efficiency, but also washes the filter surface to prevent clogging, allowing soluble salt solutions to pass smoothly through the filter plate 501 and be discharged, while insoluble solids are retained, significantly improving the recovery efficiency of resource components in saline solid waste and the stability of system operation.

[0027] As an implementation method in this embodiment, such as Figures 2 to 5 As shown, a swing extrusion plate 402 is fixedly connected to one end of the scraper 401. Both the scraper 401 and the negative pressure suction head 403 are in contact with the inner wall of the ultrasonic inner cylinder 101. A connecting pipe is connected to one end of the negative pressure suction head 403. One end of the connecting pipe is connected to the fixed plate 405. The outer wall of the fixed plate 405 is connected to the inner wall of the rotating plate 301. A threaded rod 406 is fixedly installed on one end of the fixed plate 405. A compression spring 407 is sleeved on the threaded rod 406. One end of the compression spring 407 is connected to the stirring wheel 408. The inner wall of the stirring wheel 408 is threadedly connected to the outer wall of the threaded rod 406. Inclined downward flow holes are opened on both sides of the rotating plate 301.

[0028] As can be seen from the above, during system operation, the stirring rod 300 drives the rotating plate 301 to rotate at high speed, so that the scraper 401, which is rotatably connected to the rotating plate 301, always sticks to the inner wall of the ultrasonic inner cylinder 101 under the action of centrifugal force, continuously scraping off the attached material and preventing scaling. The swinging extrusion plate 402 connected to one end of the scraper 401 swings together with the scraper 401. During the rotation, it periodically compresses the extrusion air bladder 404 located inside the rotating plate 301, thereby forming an alternating negative pressure and release state at the negative pressure suction head 403. Since the negative pressure suction head 403 is also in close contact with the inner cylinder wall, this negative pressure can suck the thick or adhesive material near the cylinder wall into the inner cavity of the rotating plate 301.

[0029] After the sucked-in material enters the rotating plate 301, it is driven by centrifugal force, which pushes the stirring wheel 408 to produce a transverse reciprocating motion along the threaded rod 406. The stirring wheel 408 and the threaded rod 406 are threadedly engaged. Its motion not only has axial displacement, but also rotational shearing, thereby efficiently dispersing, mixing and refining the material. At the same time, the compression spring 407 sleeved on the threaded rod 406 provides elastic restoring force, so that the stirring wheel 408 can still maintain stable reciprocating motion when the centrifugal force changes, enhancing the shearing effect.

[0030] After being thoroughly sheared and mixed, the material is ejected in the form of a high-speed jet from the obliquely downward flow holes on both sides of the rotating plate 301 under the combined action of centrifugal force and internal pressure. This oblique jet directly impacts the surface of the cone-shaped filter plate 501 below, which not only strengthens the filtration process, but also uses the impact force to scour the filter surface and effectively prevents the filter holes from clogging.

[0031] As an implementation method in this embodiment, such as Figure 6 and Figure 7 As shown, the inner wall of the filter plate 501 is rotatably connected to the outer wall of the bottom end of the stirring rod 300. The bottom of the filter plate 501 is fixedly connected to the first conical plate 502 by bolts. The outside of the first conical plate 502 is fixedly installed with the second conical plate 503. A material flow channel is opened between the first conical plate 502 and the second conical plate 503. The height of the filter plate 501 and the first conical plate 502 is lower than that of the second conical plate 503, so that the material flows into the material flow channel along the inclined surface of the filter plate 501. A discharge pipe 505 is connected through one side of the second conical plate 503. The discharge pipe 505 is used to output the material output from the material flow channel. A flow pipe 504 is connected through the bottom of the first conical plate 502. A mounting bracket is also fixedly installed on the stirring rod 300 by bolts. An ultrasonic transducer 600 is fixedly installed in a circumferential array on the mounting bracket.

[0032] As described above, filter plate 501 has a conical structure that is smaller at the top and larger at the bottom. This not only increases the effective filtration area but also guides material flow using its inclined surface. Under the continuous impact of the high-speed oblique jet, the surface of filter plate 501 remains clean, effectively preventing filter pore blockage. The dissolved salt solution and fine particles pass smoothly through filter plate 501, enter the discharge channel below, and are output through flow pipe 504, achieving efficient recovery of soluble components. Larger insoluble solids are trapped on the surface of filter plate 501 and, under the combined action of gravity and jet thrust, slide naturally down the conical inclined surface, collect at the bottom of filter plate 501, and are further introduced into the material flow channel formed by the inner and outer conical plates. This achieves efficient solid-liquid separation and automatic diversion: soluble salt solution is directly discharged through filter plate 501 for subsequent resource recovery, while insoluble residues are orderly discharged, avoiding accumulation in the filtration area that could cause blockage or secondary mixing.

[0033] In addition, the ultrasonic transducers 600 arranged in a circumferential array on the stirring rod 300 continuously emit high-frequency ultrasonic waves into the medium inside the cylinder during operation, generating cavitation effect and micro-disturbance. On the one hand, this promotes the rapid dissolution of salt in solid waste, and on the other hand, it prevents particles from depositing on the surface of the filter plate 501. Together with the high-speed jet, they maintain the cleanliness and high efficiency of the filter surface.

[0034] As an implementation method in this embodiment, such as Figure 8 As shown, a fixed cover is fixedly installed on the top of the outer cylinder 100, and a drive motor 200 is fixedly installed on the top of the fixed cover. The output end of the drive motor 200 is fixedly connected to the bottom of the stirring rod 300. A solid-liquid feeding pipe is opened on the top of the fixed cover. An input pipe 103 and an output pipe 104 are respectively connected through the two sides of the outer cylinder 100. The input end of the output pipe 104 is connected to the conveying pump. The conveying pump is fixedly installed on the outer wall of the outer cylinder 100, and a support leg is fixedly installed on the bottom of the outer cylinder 100.

[0035] As can be seen from the above, the entire system is sealed by a fixed cover on top, ensuring that the processing is carried out in a closed environment to prevent the escape of volatile substances or the entry of external impurities. The drive motor 200 installed on the fixed cover is directly connected to the top of the stirring rod 300, providing a stable power source for the core functions such as internal stirring, wall scraping, negative pressure suction and jet spraying, so that all components can work together efficiently. The solid-liquid feeding pipe is set on the top of the fixed cover, which makes it easy to add salt-containing solid waste and the required solvent into the ultrasonic inner cylinder 101 at one time or continuously. The operation is convenient and does not affect the system's sealing performance.

[0036] The outer cylinder 100 is provided with an inlet pipe 103 and an outlet pipe 104 on both sides. The inlet pipe 103 is used to introduce a heat medium (such as steam or heat transfer oil) into the heating channel 102 to heat the inner cylinder evenly and promote the dissolution of salt. The outlet pipe 104 is connected to a delivery pump fixed on the outer wall of the outer cylinder 100 and can actively extract the heat medium after use.

[0037] The present invention also provides another technical solution, a method for separating and recycling saline solid waste, comprising the following steps: S1. Add salt-containing solid waste and an appropriate amount of water into the ultrasonic inner cylinder 101 through the solid-liquid feeding pipe. At the same time, introduce a heating medium such as steam or heat transfer oil into the heating channel 102 through the input pipe 103 to uniformly heat the entire ultrasonic inner cylinder 101. S2. Activate multiple ultrasonic transducers 600 installed on the mounting bracket to generate high-frequency ultrasonic waves, which create a cavitation effect in the liquid phase. S3. Start the drive motor 200 to drive the stirring rod 300 to rotate at high speed, so that the rotating plate 301 rotates synchronously. Under the action of centrifugal force, the scraper 401 is in close contact with the inner wall of the ultrasonic inner cylinder 101, continuously scraping off the attached material to prevent scaling. At the same time, the scraper 401 swings to drive the extrusion air bag 404 to compress periodically, so that the negative pressure suction head 403 generates negative pressure, sucking the thick or sticky material near the cylinder wall into the inner cavity of the rotating plate 301. S4. The material sucked into the inner cavity of the rotating plate 301 is driven by centrifugal force to push the stirring wheel 408 to move laterally and reciprocally along the threaded rod 406, which shears, disperses and fully mixes the material. Then, under the combined action of pressure difference and centrifugal force, the material is ejected in the form of a high-speed oblique jet through the downward flow hole, directly impacting the surface of the filter plate 501 below. S5. The filter plate 501 has a conical structure with a smaller top and a larger bottom. Its surface is continuously washed by a high-speed jet. The dissolved salt solution and fine particles pass through the filter plate 501 and flow into the flow pipe 504 for output, while larger insoluble solids are intercepted and flow into the material flow channel along the filter plate 501.

[0038] The working principle of the technical solution provided by this invention is as follows: When in use, firstly, add the salt-containing solid waste and an appropriate amount of water into the ultrasonic inner cylinder 101 through the top feeding port. At the same time, the heating medium is introduced from the outer channel and flows in the jacket to uniformly heat the entire inner cylinder, so that the soluble salts in the solid waste can be dissolved more quickly under the heating conditions. After the drive motor 200 is started, the stirring rod 300 begins to rotate at high speed, driving the multiple rotating plates 301 mounted on it to operate synchronously. Under the action of centrifugal force, the scraper 401 adheres tightly to the inner wall of the inner cylinder, continuously scraping off the material adhering to the wall surface to prevent scaling and clogging. The scraper 401 oscillates periodically during rotation, causing the compression air bladder 404 linked to it to repeatedly compress and rebound, thereby forming an alternating negative pressure state at the negative pressure suction head 403. Since the negative pressure suction head 403 is always in contact with the inner wall, it can actively suck the thick slurry or adhering material near the wall surface into the inner cavity of the rotating plate 301 (when the compression air bladder 404 is compressed, it discharges the gas inside into the inner cavity of the rotating plate 301; when the compression air bladder 404 expands back due to the oscillation of the scraper 401, a negative pressure is generated inside, and the material is sucked in from the negative pressure suction head 403 through the connecting pipe). The material entering the inner cavity of the rotating plate 301 is driven by the centrifugal force generated by the high-speed rotation, which pushes the stirring wheel 408 to produce a transverse reciprocating motion along the threaded structure. The stirring wheel 408 and the threaded rod 406 are threadedly engaged. Its motion not only has axial displacement, but also has a rotational shearing effect. At the same time, the compression spring 407 sleeved on the threaded rod 406 provides elastic restoring force, so that the stirring wheel 408 can still reciprocate stably when the centrifugal force changes, and perform efficient shearing, dispersing and mixing of the material, so as to refine its particle size and make its composition uniform. Specifically: After the material is sucked into the inner cavity of the rotating plate 301, under high-speed rotation, the centrifugal force accumulates on the outer end of the rotating plate 301, forming an axial pressure on the stirring wheel 408. Since the stirring wheel 408 and the threaded rod 406 are threadedly engaged, this axial pressure will force the stirring wheel 408 to rotate while reciprocating along the axial direction of the threaded rod 406. Under the combined action of centrifugal force and internal pressure, the fully processed material is ejected in the form of a high-speed jet from the downward-sloping holes on both sides of the rotating plate 301. This jet is inclined and directly impacts the surface of the cone-shaped filter plate 501 below. The high-speed impact not only enhances the filtration efficiency, but also continuously washes the filter surface, effectively preventing fine particles from clogging the filter holes. During the filtration process, fully dissolved salt solution and smaller particles pass through filter plate 501 and enter flow pipe 504, while larger or incompletely dissolved insoluble solids are trapped on the surface of filter plate and, under the combined guidance of gravity and jet thrust, naturally slide down the conical inclined surface to discharge pipe 505. Throughout the operation, the ultrasonic transducer 600 installed on the stirring rod 300 continuously emits high-frequency ultrasonic waves, generating cavitation effect and micro-disturbance in the liquid. On the one hand, this further promotes salt dissolution and particle dispersion, and on the other hand, it inhibits particle deposition in the filtration area. Together with the high-speed jet, it maintains the cleanliness and permeability of the filter surface. The feeding port at the top of the equipment supports continuous or batch feeding, and the external delivery pump actively extracts the used heat medium.

[0039] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A separation and recycling system for saline solid waste, characterized in that, The device includes an outer cylinder (100), an ultrasonic inner cylinder (101) is fixedly installed inside the outer cylinder (100), a heating channel (102) for introducing a heating medium is opened between the ultrasonic inner cylinder (101) and the outer cylinder (100), and a stirring rod (300), a cleaning component (400), a screening mechanism (500) and an ultrasonic transducer (600) are respectively provided inside the ultrasonic inner cylinder (101). Multiple rotating plates (301) are fixedly installed in a circumferential array on the stirring rod (300). The cleaning assembly (400) includes a scraper (401) rotatably connected to the rotating plate (301), a negative pressure suction head (403) fixedly installed at one end of the rotating plate (301), and a squeezing airbag (404) connected to one side of the negative pressure suction head (403). The rotating plate (301) is also equipped with a stirring wheel (408). The screening mechanism (500) includes a filter plate (501) located at the bottom of the stirring rod (300), the filter plate (501) being smaller at the top and larger at the bottom; The rotating stirring rod (300) drives the scraper (401) to adhere to the inner wall of the ultrasonic inner cylinder (101) and scrape off the raw material under the action of centrifugal force. Its swing synchronously and periodically compresses and squeezes the air bag (404). The negative pressure suction head (403) sucks the material into the inner cavity of the rotating plate (301). The stirring wheel (408) in the cavity moves laterally and reciprocally under the action of centrifugal force, shearing and mixing the material. Finally, the material forms a high-speed oblique jet that is sprayed out from the rotating plate (301) and directly impacts the surface of the filter plate (501) at the bottom of the inner cylinder.

2. The separation and recovery system for saline solid waste according to claim 1, characterized in that, One end of the scraper (401) is fixedly connected to a swinging extrusion plate (402). Both the scraper (401) and the negative pressure suction head (403) are in contact with the inner wall of the ultrasonic inner cylinder (101). One end of the negative pressure suction head (403) is connected to a connecting pipe, and one end of the connecting pipe is connected to a fixing plate (405).

3. The separation and recovery system for saline solid waste according to claim 2, characterized in that, The outer wall of the fixing plate (405) is connected to the inner wall of the rotating plate (301). A threaded rod (406) is fixedly installed at one end of the fixing plate (405), and a compression spring (407) is sleeved on the threaded rod (406).

4. The separation and recovery system for saline solid waste according to claim 3, characterized in that, One end of the compression spring (407) is connected to the stirring wheel (408), the inner wall of the stirring wheel (408) is threadedly connected to the outer wall of the threaded rod (406), and both sides of the rotating plate (301) are provided with downward oblique flow holes.

5. The separation and recovery system for saline solid waste according to claim 1, characterized in that, The inner wall of the filter plate (501) is rotatably connected to the outer wall of the bottom end of the stirring rod (300), and the bottom of the filter plate (501) is fixedly connected to the first conical plate (502) by bolts.

6. The separation and recovery system for saline solid waste according to claim 5, characterized in that, A second conical plate (503) is fixedly installed on the outside of the first conical plate (502), and a material flow channel is opened between the first conical plate (502) and the second conical plate (503).

7. The separation and recovery system for saline solid waste according to claim 6, characterized in that, The heights of the filter plate (501) and the first conical plate (502) are both lower than those of the second conical plate (503), so that the material flows into the material flow channel along the inclined surface of the filter plate (501).

8. The separation and recovery system for saline solid waste according to claim 6, characterized in that, A discharge pipe (505) is connected through one side of the second conical plate (503). The discharge pipe (505) is used to output the material output from the material flow channel. A flow pipe (504) is connected through the bottom of the first conical plate (502). A mounting bracket is also fixedly installed on the stirring rod (300) by bolts. An ultrasonic transducer (600) is fixedly installed on the mounting bracket in a circumferential array.

9. The separation and recovery system for saline solid waste according to claim 1, characterized in that, A fixed cover is fixedly installed on the top of the outer cylinder (100), and a drive motor (200) is fixedly installed on the top of the fixed cover. The output end of the drive motor (200) is fixedly connected to the bottom of the stirring rod (300). A solid-liquid feeding pipe is opened on the top of the fixed cover. An input pipe (103) and an output pipe (104) are respectively connected through the two sides of the outer cylinder (100). The input end of the output pipe (104) is connected to the conveying pump. The conveying pump is fixedly installed on the outer wall of the outer cylinder (100), and a support leg is fixedly installed on the bottom of the outer cylinder (100).

10. A method for separating and recovering saline solid waste, applicable to the separation and recovery system for saline solid waste as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Add salt-containing solid waste and an appropriate amount of water into the ultrasonic inner cylinder (101) through the solid-liquid feeding pipe. At the same time, introduce heating medium (such as steam or heat transfer oil) into the heating channel (102) through the input pipe (103) to uniformly heat the entire ultrasonic inner cylinder (101). S2. Activate multiple ultrasonic transducers installed on the mounting bracket to generate high-frequency ultrasonic waves, which create a cavitation effect in the liquid phase. S3. Start the drive motor (200) to drive the stirring rod (300) to rotate at high speed, so that the rotating plate (301) rotates synchronously; under the action of centrifugal force, the scraper (401) sticks to the inner wall of the ultrasonic inner cylinder (101) and continuously scrapes off the attached material to prevent scaling; at the same time, the scraper (401) swings to drive the squeezing air bag (404) to compress periodically, so that the negative pressure suction head (403) generates negative pressure and sucks the thick or sticky material near the cylinder wall into the inner cavity of the rotating plate (301); S4. The material sucked into the inner cavity of the rotating plate (301) is driven by centrifugal force to push the stirring wheel (408) to move laterally and reciprocally along the threaded rod (406), which shears, disperses and fully mixes the material. Then, under the combined action of pressure difference and centrifugal force, the material is ejected in the form of a high-speed oblique jet through the downward flow hole, directly impacting the surface of the filter plate (501) below. S5. The filter plate (501) has a conical structure with a smaller top and a larger bottom. Its surface is continuously washed by a high-speed jet. The dissolved salt solution and fine particles pass through the filter plate (501) and flow into the flow pipe (504) for output, while larger insoluble solids are intercepted and flow into the material flow channel along the filter plate (501).

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