Low-temperature negative pressure evaporation device suitable for high-salinity wastewater

Abstract

The application provides a low-temperature negative pressure evaporation device suitable for high-salt wastewater, comprising: an evaporation condensation assembly, which is provided with multiple groups, comprising an outer box body, the outer box body is internally provided with an evaporation tank, and the evaporation tank is internally provided with an agitation component; the evaporation tank is used to evaporate and separate salt particles in the wastewater; a separator and a condensation tank are mounted on the top of the outer box body; a discharge component of the outer box body is connected to the side wall bottom of the evaporation tank; a recovery sedimentation tank is used to receive condensed water output by the multiple condensation tanks; and a residual material cleaning assembly, which comprises a support rod, is vertically arranged on a sliding plate. The cleaning logic of the brush cleaning component multiple times in and out and the agitation component rotation position switching can complete high-pressure flushing and mechanical brush cleaning composite cleaning for three groups of scraping materials one by one, realize full coverage and dead angle cleaning of the stirring and scraping structure, remove residual wet salt residue and thin layer salt dirt, effectively avoid dry and hardening of the residual salt dirt, and guarantee long-term stability of the evaporation heat exchange efficiency of the equipment.

Description

Technical Field

[0001] This invention relates to the field of high-salinity wastewater treatment technology, and specifically to a low-temperature negative pressure evaporation device suitable for high-salinity wastewater. Background Technology

[0002] Industrial processes such as chemical, printing and dyeing, electroplating, and coal chemical production generate large amounts of high-salinity wastewater. This type of wastewater is characterized by high salt content, complex composition, and a tendency to crystallize and form scale. If high-salinity wastewater is discharged directly without effective treatment, it can easily cause water pollution, soil salinization, and other environmental problems, failing to meet current industrial environmental emission standards. Low-temperature negative pressure evaporation is currently the mainstream technology for the harmless and resource-based treatment of high-salinity wastewater. This process achieves the reduction of high-salinity wastewater volume by creating a negative pressure, low-temperature environment to evaporate water and separate brine.

[0003] Currently, traditional low-temperature negative pressure evaporation equipment used in the industrial sector mainly relies on a spiral stirring structure and a scale scraping structure installed inside the tank to complete the auxiliary evaporation operation. During equipment operation, the stirring structure agitates the high-salt wastewater inside the tank, improving heat exchange uniformity, while the scale scraping structure locally scrapes scale off the tank wall to reduce salt scale adhesion. When discharging salt, the scale scraping structure scrapes the material, and the spiral stirring structure rotates to discharge the material in a spiral manner.

[0004] However, after prolonged operation, the scraping structure and the spiral stirring structure themselves will also accumulate a large number of salt particles. If not treated in time, the salt scale will accumulate and dry, reducing the heat exchange efficiency of the tank and causing the evaporation efficiency of the equipment to continuously decline. Cleaning can only be done by stopping the machine and disassembling it, which is very difficult. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature negative pressure evaporation device suitable for high-salinity wastewater, solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A low-temperature negative pressure evaporation device suitable for high-salt wastewater includes: an evaporation and condensation assembly, which is provided in multiple sets, including an outer casing, an evaporation tank built into the outer casing, and an agitator built into the evaporation tank; the evaporation tank is used to evaporate and separate salt particles from the wastewater; a separator and a condensation tank are installed on the top of the outer casing; and a discharge component extending out of the outer casing is connected to the bottom of the side wall of the evaporation tank.

[0008] A sedimentation tank is used to receive condensate from multiple condensate tanks.

[0009] The ground rail assembly is located on one side of multiple evaporation and condensation assemblies, and the output end of the ground rail assembly is equipped with a salt storage assembly.

[0010] The material transfer assembly includes a slide plate that is slidably mounted on top of a ground rail assembly, and a first and a second transfer drum that are rotatably mounted on top of the slide plate.

[0011] The waste material cleaning assembly includes a support rod, which is vertically mounted on a slide plate. A docking box is provided at the top of the support rod. A brushing component is axially slidably installed inside the docking box. A guide component that drives the brushing component to move is built into the docking box.

[0012] The evaporator discharge process includes the following stages:

[0013] In the first stage, the discharge component opens, and the stirring component spirally outputs the salt to the first rotating tank;

[0014] In the second stage, the docking box corresponds to the discharge component, and the brushing component is in a retracted state and extends into the bottom of the evaporator.

[0015] The third stage involves the brushing and rinsing components, including the scraper at the bottom, which is part of the agitation and cleaning process.

[0016] In the fourth stage, the scrubbing components are removed from the mixing tank, the agitating components rotate to discharge brine to the second rotating tank, and the scraper components to be scrubbed are switched.

[0017] Furthermore, the stirring component includes a main shaft, connecting rods, and spiral stirring blades. The main shaft is rotatably mounted inside the evaporator, and three sets of connecting rods are arrayed on the main shaft. The spiral stirring blades, which are close to the inner wall of the evaporator, are fixedly mounted on the main shaft through the connecting rods, and a scraper is installed on the inner side of the spiral stirring blades.

[0018] Furthermore, the scraping component includes a transverse connecting frame and a scraper plate. Three sets of transverse connecting frames are fixedly installed on the spiral mixing blade, and the transverse connecting frames are fixedly installed with inclined scraper plates at equal intervals.

[0019] Furthermore, the discharge component includes a discharge cylinder, a discharge valve, and a discharge nozzle. The bottom of the side wall of the evaporator is connected to a discharge valve that extends outward from the outer casing, and a discharge cylinder is fixedly installed at the end of the discharge valve. The end of the discharge cylinder is connected to the docking box, and a discharge nozzle is fixedly connected to the bottom of the discharge cylinder. The discharge nozzle is used to discharge materials from the first and second turnover buckets.

[0020] Furthermore, the ground rail assembly includes ground rails, a base plate, and an active guide seat. A base plate is provided on one side of the evaporation and condensation assembly. Two sets of ground rails are fixedly installed on the top of the base plate. Adaptive active guide seats are mounted on the two sets of ground rails. The sliding plate is installed on the top surface of the active guide seat.

[0021] Furthermore, the salt storage assembly includes a storage tank, and the output end of the ground rail assembly is provided with a storage tank. A partition plate is fixedly connected inside the storage tank, and the storage tank is divided into a solid storage chamber and a liquid storage chamber by the partition plate. The solid storage chamber and the liquid storage chamber are used to cooperate with the first turnover tank and the second turnover tank, respectively.

[0022] Furthermore, the material transfer assembly also includes an active turntable, a support plate, a balance support, a drive shaft, and a connecting support. The active turntable is fixedly installed on the top of the slide plate, and the support plate is fixedly installed on the rotating surface of the active turntable. The drive shaft is rotatably installed on the front side of the top of the support plate. The two ends of the drive shaft are equipped with turnover bucket placement seats through the connecting support. The first turnover bucket and the second turnover bucket are fixedly located in the turnover bucket placement seats. The balance support that is horizontally in contact with the top surface of the support plate is fixedly installed on the front side of the bottom of the turnover bucket placement seats.

[0023] Furthermore, the guiding component includes a drive gear, a rack, and a guide plate. The guide plate is slidably installed inside the docking box. The drive gear is fixedly installed on one side of the guide plate. The rack that meshes with the drive gear is fixedly connected to the bottom of the docking box. The brushing component is installed on the other side of the guide plate.

[0024] Furthermore, the washing component includes a rectangular cylinder, a hollow guide rod, a second guide plate, an active telescopic cylinder, a rinsing component, and a washing component; an active rotating cylinder is fixedly installed on one side of the first guide plate, and a rectangular cylinder is installed on the rotating end of the active rotating cylinder. The front, back, and bottom of the rectangular cylinder are respectively provided with a connecting assembly port one and an assembly port two; an active telescopic cylinder is fixedly installed on one side inside the rectangular cylinder, and a second guide plate is fixedly installed on the output end of the active telescopic cylinder, and the second guide plate is slidably connected to the inner wall of the rectangular cylinder. A hollow guide rod is fixedly installed on one side of the second guide plate, and a rinsing component is installed between the hollow guide rod and the first assembly port, and a washing component is installed between the hollow guide rod and the second assembly port.

[0025] Furthermore, both assembly ports one and two are equipped with rotating components, and the hollow guide rod is equipped with corresponding pushing components, which are slidably hinged to the rotating components; the rinsing component includes a water inlet and a rotating nozzle, the rotating component in assembly port two is equipped with a water inlet, and a rotating nozzle is fixedly installed on the water inlet, the water inlet is connected to the hollow guide rod through an inner hose, and an outer hose extending out of the docking box is fixedly connected to the hollow guide rod; the brushing component includes a rotating spindle and a brushing head, the rotating component in assembly port one is equipped with a rotating spindle, and a brushing head is rotatably installed at the end of the rotating spindle.

[0026] This invention provides a low-temperature negative pressure evaporation device suitable for high-salinity wastewater. Compared with the prior art, it has the following advantages:

[0027] 1. The residual material cleaning component adopts an integrated brushing structure that can be retracted and extended. Relying on the gear and rack meshing transmission of the guide component, the brushing component can be precisely extended and retracted as a whole. It can smoothly extend into the evaporator through the discharge component without structural interference and has strong adaptability.

[0028] 2. The equipment adopts a collaborative cleaning logic of multiple entry and exit of the brushing components and rotation and repositioning of the stirring components. It can perform high-pressure rinsing and mechanical brushing composite cleaning on the three sets of scraping components one by one, achieving full coverage and no dead corner cleaning of the stirring and scraping structure, removing residual damp salt residue and thin layer of salt scale, solving the problems of difficult traditional manual cleaning and residual scale accumulation in dead corners, effectively preventing residual salt scale from drying and hardening, and ensuring long-term stable evaporation heat exchange efficiency of the equipment.

[0029] 3. The scrubbing component integrates high-pressure rinsing and mechanical scrubbing functions. The hollow guide rod, together with the external and internal hoses, forms a closed water delivery channel. High-pressure rotating water spray is achieved through the rotating nozzle, which can dissolve loose salt residue and floating scale. Combined with the mechanical friction scrubbing of the rotating scrubbing head, it can peel off the dried thin layer of salt scale. The combination of dual cleaning methods has a cleaning effect far superior to a single cleaning mode. It can clean the stirring structure and residual impurities at the bottom of the tank, ensuring the cleanliness of the inside of the evaporator and providing good working conditions for the next round of high-salt wastewater evaporation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the overall structure of the present invention is shown;

[0032] Figure 2 A schematic diagram of the overall cross-sectional structure of the present invention is shown;

[0033] Figure 3 A schematic diagram of the liquid loading assembly structure of the present invention is shown;

[0034] Figure 4 A schematic diagram of the liquid delivery assembly and liquid guide tube structure of the present invention is shown;

[0035] Figure 5 A schematic diagram of the liquid delivery assembly and liquid guide tube structure of the present invention is shown;

[0036] Figure 6 A schematic diagram of the liquid delivery assembly and liquid guide tube structure of the present invention is shown;

[0037] Figure 7A schematic diagram of the liquid feeding assembly and liquid guiding pipe structure of the present invention is shown;

[0038] Figure 8 A schematic diagram of the liquid feeding assembly and liquid guiding pipe structure of the present invention is shown;

[0039] Figure 9 A schematic diagram of the liquid feeding assembly and liquid guiding pipe structure of the present invention is shown;

[0040] Figure 10 A schematic diagram of the liquid delivery assembly and liquid guide tube structure of the present invention is shown;

[0041] Figure 11 A schematic diagram of the liquid feeding assembly and liquid guiding pipe structure of the present invention is shown;

[0042] As shown in the figure:

[0043] 100. Evaporator-condenser assembly; 101. Outer casing; 102. Evaporator; 104. Separator; 105. Condenser;

[0044] 103. Agitating component; 131. Main shaft; 132. Connecting rod; 133. Spiral agitator blades;

[0045] 107. Scraper component; 171. Horizontal connecting frame; 172. Scraper plate;

[0046] 106. Discharge component; 161. Discharge cylinder; 162. Discharge valve; 163. Discharge nozzle;

[0047] 200. Recycling sedimentation tank;

[0048] 300. Ground rail assembly; 301. Ground guide rail; 302. Base plate; 303. Active guide seat;

[0049] 400. Salt storage assembly; 401. Storage tank; 402. Divider plate; 403. Solid storage chamber; 404. Liquid storage chamber;

[0050] 500. Material transfer assembly; 501. Slide plate; 502. Drive turntable; 503. Bearing plate; 504. Balance support; 505. Drive spindle; 506. Connecting support; 507. Tray for placing containers;

[0051] 600. Waste material cleaning assembly; 601. Support rod; 602. Connecting box;

[0052] 603. Scrubbing component; 631. Rectangular cylinder; 632. Hollow guide rod; 633. Guide plate II; 634. Active telescopic cylinder; 635. Assembly port I; 636. Assembly port II; 637. Tilting component; 638. Pushing component; 639. Active rotating cylinder;

[0053] 604. Guide component; 641. Drive gear; 642. Rack; 643. Guide plate one;

[0054] 605. Flushing component; 651. Water inlet; 652. Rotating nozzle; 653. External hose; 654. Internal hose;

[0055] 606. Brushing parts; 661. Rotating spindle; 662. Brushing head;

[0056] 700, First Turnover Bucket;

[0057] 800, Second Turnover Bucket. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0059] To address the technical problems in the background section, a low-temperature negative pressure evaporation device suitable for high-salinity wastewater is provided as follows:

[0060] Combination Figures 1-11 As shown, the present invention provides a low-temperature negative pressure evaporation device suitable for high-salinity wastewater, comprising: an evaporation-condensation assembly 100, which is provided in multiple sets, including an outer casing 101, an evaporation tank 102 built into the outer casing 101, and an agitator 103 built into the evaporation tank 102; the evaporation tank 102 is used to evaporate and separate salt particles from the wastewater; a separator 104 and a condensation tank 105 are installed on the top of the outer casing 101; a discharge component 106 extending out of the outer casing 101 is connected to the bottom of the side wall of the evaporation tank 102; a recovery sedimentation tank 200, which is used to receive the condensate output from the multiple sets of condensation tanks 105; and a ground rail assembly 300, which is installed on the multiple sets of evaporation tanks 105. On one side of the condensation assembly 100, the output end of the ground rail assembly 300 is provided with a salt storage assembly 400; the material transfer assembly 500 includes a slide plate 501, which is slidably installed on the top of the ground rail assembly 300, and a first turnover bucket 700 and a second turnover bucket 800 are rotatably installed on the top of the slide plate 501; the residual material cleaning assembly 600 includes a support rod 601, which is vertically installed on the slide plate 501, and a docking box 602 is provided at the top of the support rod 601. A brushing component 603 is axially slidably installed inside the docking box 602, and a guide component 604 that drives the brushing component 603 to move is built into the docking box 602;

[0061] The discharge process of evaporator 102 includes the following stages:

[0062] In the first stage, the discharge component 106 is opened, and the stirring component spirally outputs the salt to the first rotating tank 700.

[0063] In the second stage, the docking box 602 corresponds to the discharge component 106, and the brushing component 603 is in a retracted state and extends into the bottom of the evaporator 102.

[0064] In the third stage, the brushing component 603 unfolds to rinse and agitate the scraper component 107 located at the bottom of the agitation component 103.

[0065] In the fourth stage, the scrubbing component 603 exits the mixing tank, the stirring component 103 rotates to discharge brine to the second rotating tank 800, and the scraper component 107 to be scrubbed is switched.

[0066] In the above scheme:

[0067] 1. Relying on the active turntable, bearing plate and drive shaft structure on the top of the slide plate, the double rotating drum can be flexibly switched between work positions. With the balance support to ensure the stability of the bearing, it can respectively accept solid salt material and salt washing wastewater, realize the seamless connection of material classification and collection operations, and has strong process continuity. It completely solves the cumbersome operation of traditional equipment with single drum storage, solid and liquid mixing and the need for manual drum changing, and greatly reduces the degree of manual intervention.

[0068] 2. The residual material cleaning component adopts an integrated brushing structure that can be retracted and extended. Relying on the gear and rack meshing transmission of the guide component, the brushing component can be precisely extended and retracted as a whole. It can smoothly extend into the evaporator through the discharge component without structural interference and has strong adaptability.

[0069] Through the coordinated operation of the active telescopic cylinder, the pushing component and the tilting component, the rinsing component and the brushing component can be deployed and retracted simultaneously. The posture can be adaptively switched in the narrow space inside the tank, making it suitable for cleaning operations in dead corner areas such as the bottom of the tank, the scraping structure, and the root of the stirring blades.

[0070] 3. The equipment adopts a collaborative cleaning logic of multiple entry and exit of the brushing components and rotation and repositioning of the stirring components. It can perform high-pressure rinsing and mechanical brushing composite cleaning on the three sets of scraping components one by one, achieving full coverage and no dead corner cleaning of the stirring and scraping structure. It thoroughly removes residual damp salt residue and thin layer of salt scale, solving the problems of traditional manual cleaning being difficult, incomplete, and leaving residual scale in dead corners. It effectively avoids the hardening of residual salt scale and ensures the long-term stability of the equipment's evaporation heat exchange efficiency.

[0071] The scrubbing unit integrates high-pressure rinsing and mechanical scrubbing functions. The hollow guide rod, together with the external and internal hoses, forms a closed water delivery channel. High-pressure rotating water spray is achieved through the rotating nozzle, which can dissolve loose salt residue and floating scale. Combined with the mechanical friction scrubbing of the rotating scrubbing head, it can peel off the dried thin layer of salt scale. The combination of the two cleaning methods has a cleaning effect far superior to a single cleaning mode. It can clean the stirring structure and residual impurities at the bottom of the tank, ensuring the cleanliness of the inside of the evaporator and providing good working conditions for the next round of high-salt wastewater evaporation.

[0072] 4. The salt storage component divides the interior of the tank into independent solid storage chambers and liquid storage chambers through a partition plate. These chambers respectively contain the solid salt particles transferred from the first turnover tank and the salt-containing cleaning wastewater transferred from the second turnover tank. This achieves separate storage of solid waste and liquid wastewater, with clear classification and no cross-mixing, which facilitates subsequent solid waste treatment and wastewater reuse.

[0073] In this embodiment, the stirring component 103 includes a main shaft 131, connecting rods 132, and spiral stirring blades 133. The main shaft is rotatably mounted inside the evaporator 102, and three sets of connecting rods 132 are arrayed on the main shaft. The spiral stirring blades 133, located near the inner wall of the evaporator 102, are fixedly mounted on the main shaft via the connecting rods 132. A scraper 107 is installed inside the spiral stirring blades 133. By assembling multiple sets of spiral stirring blades using the main shaft and connecting rod array, uniform stirring throughout the evaporator can be achieved, ensuring uniform heating of the high-salt wastewater, stable low-temperature negative pressure evaporation, and improved water-vapor separation efficiency. The integrated scraper mounting structure inside the spiral stirring blades allows for simultaneous stirring and scraping operations, enabling real-time removal of salt crystals adhering to the tank wall.

[0074] In this embodiment, the scraper component 107 includes a transverse connecting frame 171 and scraper plates 172. Three sets of transverse connecting frames 171 are fixedly installed on the spiral stirring blade 133, and inclined scraper plates 172 are fixedly installed at equal intervals on the transverse connecting frames 171. By mounting multiple sets of inclined scraper plates on the transverse connecting frames, an array-type, multi-angle scraping structure is formed, which conforms to the contour of the tank wall and the root of the stirring blade, expanding the scraping coverage area and enabling all-round scraping of crystalline salt scale at different locations on the tank wall without any blind spots. The inclined arrangement structure can adapt to the stirring rotation trajectory, reduce motion interference, and improve the salt scale removal effect.

[0075] In this embodiment, the discharge component 106 includes a discharge cylinder 161, a discharge valve 162, and a discharge nozzle 163. The discharge valve 162, extending from the outer casing 101, is connected to the bottom of the side wall of the evaporator 102, and the discharge cylinder 161 is fixedly installed at the end of the discharge valve 162. The end of the discharge cylinder 161 is connected to the docking box 602, and the bottom of the discharge cylinder 161 is fixedly connected to the discharge nozzle 163, which is used to discharge materials from the first turnover bucket 700 and the second turnover bucket 800. The discharge valve enables controllable opening and closing of the discharge channel, adapting to the four-stage differentiated discharge logic, and can separately complete the discharge of solid salt and saline wastewater, realizing time-sharing and diverted discharge. The discharge cylinder can be precisely connected to the docking box of the cleaning component to ensure a leak-free and sealed cleaning operation, and the discharge nozzle can be aligned with different turnover buckets to guide the discharge of different materials.

[0076] In this embodiment, the ground rail assembly 300 includes a ground guide rail 301, a base plate 302, and an active guide seat 303. A base plate 302 is provided on one side of the evaporation-condensation assembly 100. Two sets of ground guide rails 301 are fixedly installed on the top of the base plate 302, and matching active guide seats 303 are mounted on the two sets of ground guide rails 301. A sliding plate 501 is mounted on the top surface of the active guide seat 303. The base plate, ground guide rails, and active guide seat form a movable ground rail structure, which can drive the material transfer assembly and residual material cleaning assembly to slide as a whole, automatically completing the alignment operation with the evaporator discharge section. No manual adjustment is required, resulting in high alignment accuracy and fast operating condition switching, adapting to the alternating operation requirements of multiple evaporation-condensation assemblies.

[0077] In this embodiment, the salt storage assembly 400 includes a storage tank 401. The output end of the ground rail assembly 300 is provided with the storage tank 401. A partition plate 402 is fixedly connected inside the storage tank 401. The storage tank 401 is divided into a solid storage chamber 403 and a liquid storage chamber 404 by the partition plate 402. The solid storage chamber 403 and the liquid storage chamber 404 are respectively used to cooperate with the first turnover tank 700 and the second turnover tank 800. By dividing the storage tank into independent solid storage chambers and liquid storage chambers by the partition plate, the solid salt particles of the first turnover tank and the salt-containing washing wastewater of the second turnover tank can be respectively stored separately, realizing complete partitioned and isolated storage of solid and liquid materials, preventing cross-mixing, and facilitating subsequent solid waste resource utilization and wastewater reuse.

[0078] In this embodiment, the material transfer assembly 500 further includes an active turntable 502, a support plate 503, a balance support 504, a drive spindle 505, and a connecting support 506. The active turntable 502 is fixedly installed on the top of the slide plate 501. The support plate 503 is fixedly installed on the rotating surface of the active turntable 502. The drive spindle 505 is rotatably installed on the front side of the top of the support plate 503. The two ends of the drive spindle 505 are equipped with turnover drum placement seats 507 through the connecting support 506. The first turnover drum 700 and the second turnover drum 800 are fixedly located in the turnover drum placement seat 507. The balance support 504, which is horizontally in contact with the top surface of the support plate 503, is fixedly installed on the front side of the bottom of the turnover drum placement seat 507. The active turntable, the support plate, and the drive spindle form a rotatable and switchable double-drum support structure, which can quickly switch the receiving positions of the first turnover drum and the second turnover drum, realizing seamless switching between the receiving positions of solid materials and liquid materials. The use of a balance support ensures the horizontal stability of the load-bearing structure, prevents the turnover bucket from shifting or tipping over, and guarantees stable and reliable sorting and receiving operations. It eliminates the need for manual bucket changing, greatly improving the continuity and automation of operations.

[0079] In this embodiment, the guiding component 604 includes a drive gear 641, a rack 642, and a guide plate 643. The guide plate 643 is slidably installed inside the docking box 602. The drive gear 641 is fixedly installed on one side of the guide plate 643. The rack 642, which meshes with the drive gear 641, is fixedly connected to the bottom of the docking box 602. The brushing component 603 is installed on the other side of the guide plate 643. Through the gear and rack meshing driving structure of the guiding component, the transmission is precise and the action is stable. It can accurately control the overall extension and retraction of the brushing component, ensuring that the brushing component can smoothly enter and exit the evaporator in the retracted state without structural interference.

[0080] In this embodiment, the scrubbing component 603 includes a rectangular cylinder 631, a hollow guide rod 632, a second guide plate 633, an active telescopic cylinder 634, a rinsing component 605, and a scrubbing component 606. An active rotating cylinder 639 is fixedly installed on one side of the first guide plate 643, and the rectangular cylinder 631 is installed on the rotating end of the active rotating cylinder 639. The front, back, and bottom of the rectangular cylinder 631 are respectively provided with a connecting assembly port 635 and an assembly port 636. An active telescopic cylinder 634 is fixedly installed on one side inside the rectangular cylinder 631, and the second guide plate 633 is fixedly installed on the output end of the active telescopic cylinder 634. The second guide plate 633 is slidably connected to the inner wall of the rectangular cylinder 631. A hollow guide rod 632 is fixedly installed on one side of the second guide plate 633. A rinsing component 605 is installed between the hollow guide rod 632 and the first assembly port 635, and a scrubbing component 606 is installed between the hollow guide rod 632 and the second assembly port 636. This structure integrates high-pressure rinsing and mechanical scrubbing functions. Through the linkage of an active telescopic cylinder, guide plate, and hollow guide rod, it can achieve adaptive retraction and expansion of the rinsing and scrubbing components, adapting to the confined working space inside the tank. The rotating nozzle can achieve high-pressure water spray rinsing to disperse loose salt residue; the rotating scrubbing head can mechanically peel off dried salt scale. The dual cleaning synergy results in stronger cleaning power.

[0081] In this embodiment, both assembly ports 635 and 636 have rotating parts 637 arranged inside. A pusher 638 corresponding to the rotating part 637 is arranged on the hollow guide rod 632, and the pusher 638 is slidably hinged to the rotating part 637. The rinsing component 605 includes a water inlet 651 and a rotating nozzle 652. The water inlet 651 is installed on the rotating part 637 in assembly port 636, and a connected rotating nozzle 652 is fixedly installed on the water inlet 651. The water inlet 651 is connected to the hollow guide rod 632 via an inner hose 654, and an outer hose 653 extending out of the docking box 602 is fixedly connected to the hollow guide rod 632. The brushing component 606 includes a rotating spindle 661 and a brushing head 662. The rotating spindle 661 is installed on the rotating part 637 in assembly port 635, and a brushing head 662 is rotatably installed at the end of the rotating spindle 661. The sliding hinge between the flipping and pushing components allows the rinsing and brushing components to automatically flip and unfold with the telescopic movement, adaptively adjusting their working posture to fit the scraping components, stirring blades, and dead corners of the tank wall at multiple angles, eliminating blind spots in cleaning. A closed water supply channel is formed through internal and external hoses, ensuring stable high-pressure water supply without leakage, effectively preventing salt scale residue and ensuring long-term stable operation of the equipment.

[0082] Working principle and usage process of this invention:

[0083] S1. During normal operation, multiple evaporation and condensation components simultaneously perform low-temperature negative pressure evaporation. High-salt wastewater enters the evaporation tank 102 and is continuously stirred and agitated by the stirring component 103 inside the tank. The stirring component 103 consists of a main shaft 131, a connecting rod 132, and a spiral stirring blade 133. The overall rotation and stirring ensures uniform heating of the wastewater and accelerates the negative pressure evaporation of water. The inner sides of the three sets of spiral stirring blades are equipped with scraping components 107, which consist of a transverse connecting frame 171 and an inclined scraper 172, to continuously scrape off the salt scale adhering to the tank wall and prevent local caking and accumulation. The water vapor generated by the evaporation of wastewater enters the separator 104 to complete gas-liquid separation. The clean water vapor enters the condensation tank 105 and is condensed into clear water, which is finally collected in the recovery sedimentation tank 200 to complete the recovery of clear water. Salt particles and salt residue are trapped and accumulated at the bottom of the evaporation tank.

[0084] After a single evaporation process is completed, the first stage of material discharge begins. The discharge valve 162 of the control discharge component 106 is opened, forming a conductive channel between the bottom of the evaporator, the discharge cylinder 161, and the discharge nozzle 163. At this time, the stirring component 103 maintains a low-speed rotation, relying on the spiral pushing characteristics of the spiral stirring blades 133 to push the dry solid salt particles accumulated at the bottom of the tank outwards and discharge them. The discharged solid salt material falls precisely into the first turnover tank 700 below through the discharge nozzle 163, completing the separate collection of solid salt material and realizing the initial discharge of solid salt.

[0085] S2. After the solid salt material is discharged, the equipment enters the cleaning preparation stage. The ground rail assembly 300 slides as a whole through the base plate 302, the ground guide rail 301 and the active guide seat 303, driving the slide plate 501 and the top material transfer assembly 500 and the residual material cleaning assembly 600 to move as a whole, so that the docking box 602 accurately docks and connects with the end of the discharge cylinder 161, realizing precise alignment of the cleaning station.

[0086] At this point, the turnover bucket assembly completes the workstation switching through the cooperation of the active turntable 502 on the top of the slide plate 501, the bearing plate 503, and the drive spindle 505. The balance support 504 ensures stable bearing, so that the second turnover bucket 800 is positioned below the discharge nozzle 163 for subsequent collection of saline wastewater. After docking, the guide component 604 is activated, and through the meshing transmission of the active gear 641 and the rack 642, it pushes the guide plate 643 forward, causing the washing component 603 to remain in a retracted state and smoothly pass through the discharge cylinder 161 into the bottom area of ​​the evaporator 102, preparing for subsequent washing operations. The washing component is now in a retracted state, with a small overall size, which allows it to easily enter the tank without interfering with the internal stirring structure.

[0087] S3. After the brushing components are fully inserted into the bottom of the tank, the third stage of cleaning operation begins. The brushing components 603 push the guide plate 633 to slide through the internal active telescopic cylinder 634, causing the hollow guide rod 632 to extend and move. During the displacement, the pushing component 638 on the outside of the hollow guide rod 632 pushes the flipping component 637 at the assembly port 635 and the assembly port 636 in sequence to flip and unfold, so that the outer brush head 662 and the rotating spray head 652 open synchronously, switching from the retracted state to the unfolded state.

[0088] The external hose 653, hollow guide rod 632, and internal hose 654 form a complete water supply channel. The cleaning water is introduced into the water inlet 651 and sprayed out by the rotating nozzle 652 to perform high-pressure rinsing of the residual salt residue and scale at the bottom. At the same time, the rotating main shaft 661 drives the brush head 662 to rotate and brush, mechanically brushing the scraper 107, the root of the spiral stirring blade 133, and the dead corners at the bottom of the tank, thoroughly removing the attached residual salt scale and damp salt residue, and preventing the long-term accumulation and hardening of salt scale from affecting the evaporation efficiency of the equipment.

[0089] S4. After the single set of scraper components is cleaned, the core fourth stage of the cycle cleaning operation begins. First, the guide component 604 drives the brushing component 603 to move backward and out of the evaporator, restoring its retracted state to avoid structural interference. Then, the main shaft of the stirring component 103 is controlled to rotate at a certain angle, switching the next set of scraper components 107 to be cleaned to the bottom brushing station, completing the switching of the stirring structure position.

[0090] After the body position is switched, the scrubbing component re-enters the tank and unfolds a second time to rinse and scrub the newly arrived scraper component 107. This process is repeated continuously. Through the coordinated logic of the scrubbing component entering and exiting multiple times and the stirring component changing positions multiple times, the three sets of scraper components 107 are cleaned without dead angles and with full coverage, thoroughly removing residual salt scale from the entire stirring and scraping structure.

[0091] After all the washing operations are completed, the cleaning mixture accumulated inside the evaporator is high-concentration saline wastewater. At this time, the discharge component 106 is turned on again, and the stirring component 103 is rotated at low speed to push out all the saline water generated during the washing in the tank. The saline water falls into the second turnover tank 800 through the discharge nozzle 163, realizing the complete separation and collection of solid salt and cleaning brine.

[0092] After all the phased material discharge and cleaning operations are completed, the ground rail assembly 300 slides again, transferring the first turnover drum 700 and the second turnover drum 800 to the salt storage assembly 400. The storage tank 401 is divided into a solid storage chamber 403 and a liquid storage chamber 404 by a partition plate 402, which respectively receive the solid salt particles and salt-containing cleaning wastewater transferred from the turnover drums, realizing the classified storage of solid and liquid waste. The entire process of low-temperature evaporation of high-salt wastewater, salt separation, automatic cleaning, and classified material discharge is a complete closed loop.

[0093] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater, characterized in that, include: The evaporation and condensation assembly is provided in multiple sets, including an outer casing, an evaporator tank inside the outer casing, and an agitator inside the evaporator tank; the evaporator tank is used to evaporate and separate salt particles from wastewater; a separator and a condenser tank are installed on the top of the outer casing; and a discharge component extending out of the outer casing is connected to the bottom of the side wall of the evaporator tank. A sedimentation tank is used to receive condensate from multiple condensate tanks. The ground rail assembly is located on one side of multiple evaporation and condensation assemblies, and the output end of the ground rail assembly is equipped with a salt storage assembly. The material transfer assembly includes a slide plate that is slidably mounted on top of a ground rail assembly, and a first and a second transfer drum that are rotatably mounted on top of the slide plate. The waste material cleaning assembly includes a support rod, which is vertically mounted on a slide plate. A docking box is provided at the top of the support rod. A brushing component is axially slidably installed inside the docking box. A guide component that drives the brushing component to move is built into the docking box. The evaporator discharge process includes the following stages: In the first stage, the discharge component opens, and the stirring component spirally outputs the salt to the first rotating tank; In the second stage, the docking box corresponds to the discharge component, and the brushing component is in a retracted state and extends into the bottom of the evaporator. The third stage involves the brushing and rinsing components, including the scraper at the bottom, which is part of the agitation and cleaning process. In the fourth stage, the scrubbing components are removed from the mixing tank, the agitating components rotate to discharge brine to the second rotating tank, and the scraper components to be scrubbed are switched.

2. The low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 1, characterized in that: The stirring component includes a main shaft, connecting rods, and spiral stirring blades. The main shaft is rotatably mounted inside the evaporator, and three sets of connecting rods are arrayed on the main shaft. The spiral stirring blades, which are close to the inner wall of the evaporator, are fixedly mounted on the main shaft through the connecting rods. The scraper is installed on the inner side of the spiral stirring blades.

3. The low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 2, characterized in that: The scraping component includes a transverse connecting frame and scraper plates. Three sets of transverse connecting frames are fixedly installed on the spiral mixing blades, and scraper plates are fixedly installed at equal intervals on the transverse connecting frames at an inclined distribution.

4. The low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 1, characterized in that: The discharge component includes a discharge cylinder, a discharge valve, and a discharge nozzle. The bottom of the side wall of the evaporator is connected to a discharge valve that extends outward from the outer casing. The end of the discharge valve is fixedly installed with a discharge cylinder. The end of the discharge cylinder is connected to the docking box. The bottom of the discharge cylinder is fixedly connected with a discharge nozzle, which is used to discharge materials from the first and second turnover buckets.

5. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 1, characterized in that: The ground rail assembly includes ground rails, a base plate, and an active guide seat. A base plate is provided on one side of the evaporation and condensation assembly. Two sets of ground rails are fixedly installed on the top of the base plate. Adaptive active guide seats are mounted on the two sets of ground rails. The sliding plate is installed on the top surface of the active guide seat.

6. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 1, characterized in that: The salt storage assembly includes a storage tank. The output end of the ground rail assembly is provided with the storage tank. A partition plate is fixedly connected inside the storage tank. The storage tank is divided into a solid storage chamber and a liquid storage chamber by the partition plate. The solid storage chamber and the liquid storage chamber are used to cooperate with the first turnover tank and the second turnover tank, respectively.

7. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 5, characterized in that: The material transfer assembly also includes an active turntable, a support plate, a balance support, a drive shaft, and a connecting support. The active turntable is fixedly installed on the top of the slide plate, and the support plate is fixedly installed on the rotating surface of the active turntable. The drive shaft is rotatably installed on the front side of the top of the support plate. The two ends of the drive shaft are equipped with turnover drum placement seats through the connecting support. The first turnover drum and the second turnover drum are fixedly located in the turnover drum placement seats. The balance support that is horizontally in contact with the top surface of the support plate is fixedly installed on the front side of the bottom of the turnover drum placement seats.

8. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 1, characterized in that: The guiding component includes a drive gear, a rack, and a guide plate. The guide plate is slidably installed inside the docking box. The drive gear is fixedly installed on one side of the guide plate. The rack that meshes with the drive gear is fixedly connected to the bottom of the docking box. The brushing component is installed on the other side of the guide plate.

9. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 8, characterized in that: The washing component includes a rectangular cylinder, a hollow guide rod, a second guide plate, an active telescopic cylinder, a rinsing component, and a washing component. An active rotating cylinder is fixedly installed on one side of the first guide plate, and a rectangular cylinder is installed on the rotating end of the active rotating cylinder. The front, back, and bottom of the rectangular cylinder are respectively provided with a connecting assembly port one and an assembly port two. An active telescopic cylinder is fixedly installed on one side inside the rectangular cylinder, and a second guide plate is fixedly installed on the output end of the active telescopic cylinder. The second guide plate is slidably connected to the inner wall of the rectangular cylinder. A hollow guide rod is fixedly installed on one side of the second guide plate. A rinsing component is installed between the hollow guide rod and the first assembly port, and a washing component is installed between the hollow guide rod and the second assembly port.

10. A low-temperature negative pressure evaporation device suitable for high-salinity wastewater according to claim 9, characterized in that: Both assembly ports one and two are equipped with rotating components. The hollow guide rod is equipped with pushing components corresponding to the rotating components, and the pushing components are slidably hinged to the rotating components. The flushing component includes a water inlet and a rotating nozzle. The rotating component in assembly port two is equipped with a water inlet, and a rotating nozzle is fixedly installed on the water inlet. The water inlet is connected to the hollow guide rod through an inner hose. An outer hose extending out of the docking box is fixedly connected to the hollow guide rod. The brushing component includes a rotating spindle and a brush head. The rotating spindle is mounted on the flipping component inside the assembly port, and the brush head is rotatably mounted on the end of the rotating spindle.

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