High-salt high-concentration food wastewater treatment process and treatment equipment thereof

Abstract

The application discloses a kind of high-salt high-concentration food wastewater treatment process and its processing equipment, belong to high-salt wastewater treatment technical field.The process includes wastewater pre-filtering, filter screen dynamic cleaning, high-salt water transfer, heating concentration, cycle load crystal, load piece fold-over pre-loosen, knock off crystal and salt discharge steps.The equipment includes filter mechanism and evaporation crystallization salt discharge mechanism;Filter mechanism separates solid impurities by elastic filter screen, and realizes dynamic screen cleaning and slag discharge by using elastic screen cleaning cam and elastic spiral conveying blade;Evaporation crystallization salt discharge mechanism uses conveying belt to drive load crystal assembly to cycle load crystal, makes load piece fold-over pre-loosen crystalline salt by load piece fold-over assembly, then makes crystalline salt fall off to half cylinder by off-crystal knocking assembly, and is discharged by spiral conveying rod.The application can realize the continuous cooperation of filtering, screen cleaning, concentration, load crystal, off-crystal and salt discharge, improve the processing continuity of high-salt high-concentration food wastewater.

Description

Technical Field

[0001] This invention belongs to the technical field of high-salt wastewater treatment equipment, and particularly relates to a high-salt, high-concentration food wastewater treatment process and its equipment. Background Technology

[0002] The treatment of high-salt, high-concentration food wastewater typically involves simultaneous solids separation, high-salt water concentration, and salt crystallization. If food residues and other solids carried in the wastewater directly enter the subsequent concentration and crystallization areas, they are likely to participate in the subsequent treatment process along with the high-salt water. Therefore, filtration is generally required first to separate the solids from the high-salt water, followed by further treatment of the filtered high-salt water. For wastewater with high salt concentrations, the salt can be further concentrated by reducing its water content, and crystallization can be achieved using crystallization support structures. The formed crystals are then separated from the support structures and discharged, thus completing the desalination treatment.

[0003] However, during the above process, solid debris is easily trapped by the filter components and adheres to the filter surface. As the process continues, the trapped debris may gradually affect the passage of wastewater through the filter components, requiring the filter surface to be cleaned. At the same time, the trapped debris also needs to be discharged from the filtration area in a timely manner, otherwise it will easily accumulate in the filtration area, making it difficult to form a continuous coordination between filtration cleaning and debris discharge.

[0004] In addition, after high-salt water is concentrated and crystallized, the crystallized salt tends to adhere to the parts used to support the crystallization. Even when the crystallized salt is detached by its own gravity, some crystallized salt may still remain, requiring further cleaning of the supporting parts. If the actions of crystal support, crystal removal, repositioning of the crystal support parts, and collection and discharge of crystallized salt are not coordinated continuously, it will also affect the recycling of the crystal support parts and the timely discharge of crystallized salt. Summary of the Invention

[0005] The purpose of this invention is to provide a process and equipment for treating high-salt, high-concentration food wastewater, which solves the problems of impurities clogging filter components, difficulty in removing crystalline salt, and discontinuous discharge in the treatment of high-salt, high-concentration food wastewater, resulting in insufficient synergy between filtration and desalination processes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-salt, high-concentration food wastewater treatment process includes the following steps: Step 1: The high-salt, high-concentration food wastewater is introduced between the outer and inner cylinders and filtered through an elastic filter screen, allowing the high-salt water to enter the inner cylinder while solid impurities are trapped. The inner cylinder is driven to rotate, causing the elastic spiral conveyor blades to transport the trapped impurities. Simultaneously, the internal gear ring, the second gear, and the screen cleaning shaft drive the elastic screen cleaning cam to periodically deform the elastic filter screen and discharge the detached impurities. Step 2: The filtered high-salt water is transported to the tank and heated and evaporated by a heating jacket, causing at least one precipitable salt in the high-salt water to reach a saturated or supersaturated state at the current operating temperature. Step 3: Drive the conveyor belt to circulate the crystal carrier assembly, allowing the first and second carrier sheets to carry the precipitated crystal salt in the high-salt water area. Step 4: After the crystal carrier assembly leaves the high-salt water area, multiple balls sequentially push the first and second carrier sheets to rotate, loosening the crystal salt in advance, and the limiting plate keeps the carrier sheets in the rotated state. Step 5: Use striking balls to strike the first and second carrier sheets in the rotated state, causing the crystal salt to fall into the semi-cylinder. Step 6: Drive the spiral conveyor rod to transport the crystal salt in the semi-cylinder to the salt discharge pipe for discharge. After the carrier sheets are released from the limiting position, they are reset by the action of the reset spring hinge and re-enter the high-salt water area to circulate and carry crystals.

[0007] A high-salt, high-concentration food wastewater treatment device includes an evaporation crystallization and salt discharge mechanism. The evaporation crystallization and salt discharge mechanism includes a housing and a conveyor belt. It further includes: multiple crystal carrier components, all mounted on the conveyor belt; each crystal carrier component includes a mounting frame, a return spring hinge, a first carrier plate, and a second carrier plate, the first and second carrier plates being rotatably connected to the mounting frame via the return spring hinge; a carrier plate folding assembly, including multiple spheres and two limiting plates located on the movement paths of the first and second carrier plates; a crystal removal and tapping assembly, located in the crystal carrier component movement area corresponding to the limiting plates; a semi-cylinder located below the crystallized salt detachment area, with a salt discharge pipe installed at its bottom; and a salt discharge drive assembly, including a second motor and a spiral conveyor rod, the second motor being connected to the spiral conveyor rod, the spiral conveyor rod extending into the semi-cylinder and being drively connected to the crystal removal and tapping assembly.

[0008] Preferably, the side of the first and second carriers away from the conveyor belt is rough, and the side facing the conveyor belt is smooth.

[0009] Preferably, the wafer folding assembly further includes: two first mounting plates, both fixedly mounted on the inner wall of the housing and located on both sides of the wafer carrier assembly's running path; and multiple support rods, each mounted on one of the two first mounting plates, with different heights on the multiple support rods, and the spheres mounted on the ends of the support rods.

[0010] Preferably, the de-crystallization striking assembly includes: two fixed plates, both installed on the inner wall of the housing; two rotating rods, rotatably connected to the two fixed plates respectively, and extending to the outside of the housing; a plurality of striking balls, spaced along the length of the rotating rods and installed at intervals on the portion of the rotating rods located inside the housing, for striking the first and second carrier plates that are in a folded state; and two first gears, respectively fixedly sleeved on the portions of the two rotating rods located outside the housing.

[0011] Preferably, the salt discharge drive assembly further includes: a fixed frame, fixedly installed on the outer surface of the housing, with the second motor mounted on the fixed frame; a reciprocating drive cam, fixedly sleeved on the portion of the spiral conveyor rod located outside the semi-cylinder; a movable seat, in contact with the outer periphery of the reciprocating drive cam; a double-sided rack, the lower end of which is connected to the movable seat, and the upper end of which is connected to the connecting plate, with the two first gears located on both sides of the double-sided rack and meshing with the double-sided rack; and a return spring, connected between the connecting plate and the fixed frame.

[0012] Preferably, the evaporation crystallization salt discharge mechanism further includes: two closed-loop guide grooves set on the inner wall of the box; multiple guide slide rods installed through the conveyor belt, with the two ends of the guide slide rods slidably connected to the two closed-loop guide grooves respectively; a first motor installed outside the box, with its power output shaft extending into the box, and an active roller, a first driven roller, and a second driven roller rotatably installed inside the box, the active roller being fixedly connected to the power output shaft of the first motor.

[0013] Preferably, a heating jacket is provided on the outside of the box; a steam exhaust pipe communicating with the inside of the box is installed on the box, and a mother liquor discharge pipe communicating with the inside of the box is installed at the bottom of the box.

[0014] Preferably, the system further includes a filtration mechanism, which comprises: an outer cylinder on which a feed pipe and a slag discharge pipe communicating with the interior are installed; an inner cylinder rotatably installed inside the outer cylinder, the inner cylinder wall of which has multiple through slots, each through slot having an elastic filter screen installed therein; elastic spiral conveying blades installed on the outer surface of the inner cylinder and spirally extending along the axial direction of the inner cylinder, the outer side of which contacts the inner wall of the outer cylinder; a conveying motor installed at the bottom of the outer cylinder, the power output shaft of which is fixedly connected to the inner cylinder; and a material pump installed on the outer cylinder, the material suction end of which extends into the interior of the inner cylinder, and the material discharge end of which extends into the interior of the housing.

[0015] Preferably, the filtration mechanism further includes: an internal gear ring, fixedly installed on the inner wall of the inner cylinder; two screen cleaning shafts, vertically arranged inside the inner cylinder, with their upper ends rotatably connected to the outer cylinder respectively; multiple elastic screen cleaning cams, fixedly sleeved on the screen cleaning shafts and spaced apart along the extension direction of the screen cleaning shafts, and respectively corresponding to the position of the elastic filter screen; and a second gear, fixedly sleeved on the screen cleaning shafts and meshing with the internal gear ring.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention uses an elastic filter screen to introduce filtered high-salt water into the inner cylinder, while trapping food residue and other impurities between the inner and outer cylinders. Simultaneously, the conveying motor drives the inner cylinder and the elastic spiral conveyor blades to rotate, while the internal gear ring, the second gear, and the cleaning shaft drive the elastic cleaning cam to intermittently push the elastic filter screen to deform. This loosens the attached impurities, which are then conveyed by the elastic spiral conveyor blades to the slag discharge pipe for discharge. This achieves a combination of filtration, dynamic cleaning, and impurity removal, reducing the likelihood of continuous impurity buildup causing filtration obstruction.

[0017] 2. This invention utilizes a first motor to drive a conveyor belt that drives multiple crystal-carrying components in a cyclical motion, allowing the first and second carrier sheets to sequentially enter the high-salt water area to carry crystallized salt. Simultaneously, a guide slide bar and a closed-loop guide groove cooperate to guide the running path of the crystal-carrying components, enabling them to sequentially pass through the crystal-carrying, turning, and tapping areas, thereby forming a continuous processing path for high-salt water concentration, crystallization carrying, and subsequent crystal removal processes.

[0018] 3. In this invention, support rods and balls of different heights gradually push the first and second carrier plates during the movement of the crystal carrier assembly, causing the carrier plates to overcome the elastic force of the reset spring hinge and fold, generating mechanical disturbance to the attached crystal salt and loosening it in advance; then the limiting plate maintains the folded state of the carrier plates, and the striking ball performs a knocking action, causing the remaining crystal salt to further detach and fall into the semi-cylinder, which helps to reduce the degree to which the crystal salt continues to adhere to the surface of the carrier plates.

[0019] 4. The present invention uses a second motor to simultaneously drive the screw conveyor and the reciprocating drive cam. The screw conveyor transports the crystallized salt collected in the semi-cylinder to the salt discharge pipe, while the reciprocating drive cam drives the rotating rod and the striking ball through the moving seat, double-sided rack and first gear. This allows the knocking off and conveying of the crystallized salt to be completed by the same power source, reducing manufacturing costs and energy consumption. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the high-salt, high-concentration food wastewater treatment equipment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the evaporation, crystallization, and salt removal mechanism in this invention; Figure 3 This is a schematic diagram of the structure of the housing and the closed-loop guide groove in this invention; Figure 4 This is a schematic diagram of the assembly structure of the conveyor belt, guide slide, crystal carrier assembly, driving roller, first driven roller and second driven roller in this invention; Figure 5 This is a schematic diagram of the structure of the crystal carrier component in this invention; Figure 6 This is a schematic diagram of the structure of the wafer folding assembly and the crystal removal and knocking assembly in this invention; Figure 7 This is a schematic diagram of the cooperative structure of the salt removal driving component and the crystal removal knocking component in this invention; Figure 8 This is a partial structural schematic diagram of the salt discharge driving component in this invention; Figure 9 This is a schematic diagram of the overall structure of the filtration mechanism in this invention; Figure 10 This is a schematic diagram of the structure of the inner cylinder, elastic filter screen and elastic spiral conveying blades in the filtration mechanism of the present invention; Figure 11 This is a cross-sectional view of the inner cylinder in the filtration mechanism of the present invention. Figure 12 for Figure 11 Enlarged structural diagram at point A; Figure 13 for Figure 11 Enlarged structural diagram at point B; Reference numerals: 100, Evaporation crystallization salt discharge mechanism; 101, Box body; 102, Heating jacket; 103, Steam discharge pipe; 104, Mother liquor discharge pipe; 105, Semi-cylinder; 106, Salt discharge pipe; 107, Closed-loop guide groove; 111, Conveyor belt; 112, Guide slide bar; 120, Crystal carrier assembly; 121, Mounting frame; 122, Return spring hinge; 123, First carrier plate; 124, Second carrier plate; 131, First motor; 132, Drive roller; 133, First driven roller; 134, Second driven roller; 140, Carrier plate folding assembly; 141, First mounting plate; 142, Support rod; 143, Sphere; 144, Limiting plate; 150, Salt discharge drive assembly; 151. 152. Fixed frame; 153. Second motor; 154. Screw conveyor rod; 155. Reciprocating drive cam; 156. Moving seat; 157. Double-sided rack; 158. Connecting plate; 169. Return spring; 160. De-crystallizing hammer assembly; 161. Fixed plate; 162. Rotating rod; 163. Striking ball; 164. First gear; 200. Filtering mechanism; 201. Outer cylinder; 202. Feed pipe; 203. Slag discharge pipe; 204. Material pump; 211. Inner cylinder; 212. Elastic filter screen; 213. Internal gear ring; 214. Elastic screw conveyor blade; 215. Conveying motor; 221. Rotary shaft support plate; 222. Cleaning screen rotating shaft; 223. Elastic cleaning screen cam; 224. Second gear. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0023] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0024] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Example 1: A process for treating high-salt, high-concentration food wastewater, comprising the following steps: Step 1, Wastewater Pre-filtration: The high-salt, high-concentration food wastewater to be treated is introduced into the filtration mechanism 200. The high-salt, high-concentration food wastewater is introduced into the outer cylinder 201 through the feed pipe 202, so that the high-salt, high-concentration food wastewater enters the filtration area between the outer cylinder 201 and the inner cylinder 211. As the high-salt, high-concentration food wastewater flows into the inner cylinder 211, it passes through the elastic filter screen 212 set on the inner cylinder 211. The liquid passes through the elastic filter screen 212 and enters the inner cylinder 211. Food residues and other impurities that cannot pass through the elastic filter screen 212 are trapped between the inner cylinder 211 and the outer cylinder 201, so that the high-salt water is separated from the solid impurities therein.

[0026] Step 2, Cleaning the Elastic Filter Screen: At the same time as or after Step 1, start the conveying motor 215. The conveying motor 215 drives the inner cylinder 211 to rotate around its own axis. The inner cylinder 211 drives the elastic spiral conveying blades 214 set on its outer surface to rotate synchronously. The elastic spiral conveying blades 214 are used to convey the debris trapped between the inner cylinder 211 and the outer cylinder 201, so that the debris moves along the outer cylinder 201 towards the slag discharge pipe 203 and is discharged from the filter mechanism 200 through the slag discharge pipe 203. During the rotation of the inner cylinder 211, the inner gear ring 213 is driven to rotate synchronously. The inner gear ring 213 drives the second gear 224 to rotate through meshing with the second gear 224. The second gear 224 drives the screen cleaning shaft 222 to rotate. The screen cleaning shaft 222 further drives the multiple elastic screen cleaning cams 223 set on it to rotate. When the elastic screen cleaning cam 223 rotates to the position of contacting the corresponding elastic filter screen 212, it pushes the elastic filter screen 212, causing the elastic filter screen 212 to undergo local deformation. As the elastic screen cleaning cam 223 continues to rotate, its pushing effect on the elastic filter screen 212 decreases or is released, and the elastic filter screen 212 returns to its original state. The continuous rotation of the elastic cleaning cam 223 causes the elastic filter screen 212 to repeatedly deform, disturbing the food residue and other debris attached to the surface of the elastic filter screen 212, causing the attached debris to loosen or detach from the surface of the elastic filter screen 212; the detached debris is still located between the inner cylinder 211 and the outer cylinder 201, and is continued to be transported to the slag discharge pipe 203 by the rotating elastic spiral conveying blades 214 for discharge, thereby dynamically cleaning the elastic filter screen 212 during the filtration process.

[0027] Step 3: Transfer of high-salt water after filtration: The pre-filtered high-salt water is collected inside the inner cylinder 211. The material pump 204 is started, and the filtered high-salt water is drawn from inside the inner cylinder 211 through the suction end of the material pump 204. The filtered high-salt water is then transported to the box 101 of the evaporation crystallization salt discharge mechanism 100 through the discharge end of the material pump 204.

[0028] Step 4: High-salt water heating and concentration: After the filtered high-salt water enters the chamber 101, the heating jacket 102 set outside the chamber 101 is activated. Heat is transferred to the chamber 101 through the heating jacket 102 to heat the high-salt water inside the chamber 101, so that some of the water in the high-salt water is heated to form water vapor. The formed water vapor is discharged through the steam exhaust pipe 103 connected to the inside of the chamber 101.

[0029] Step 5, Circulating crystal loading of crystal carriers: Start the first motor 131, which drives the drive roller 132 to rotate. The drive roller 132 drives the conveyor belt 111 to run along the circulation path formed by the drive roller 132, the first driven roller 133, and the second driven roller 134. During the operation of the conveyor belt 111, it synchronously drives multiple guide slide rods 112 to move. The two ends of each guide slide rod 112 slide along two closed-loop guide grooves 107 in the housing 101, so that multiple crystal carriers 120 installed on the conveyor belt 111 move according to the predetermined circulation path. When the crystal carrier assembly 120 enters the high saline area inside the housing 101, the first carrier sheet 123 and the second carrier sheet 124 remain in an unfolded state under the elastic action of the reset spring hinge 122, and come into contact with the high saline area inside the housing 101 as the conveyor belt 111 moves. During the contact between the concentrated brine from step four and the first carrier 123 and the second carrier 124, salt crystals form on the surfaces of the first carrier 123 and the second carrier 124. During the cyclic crystal loading process of the crystal loading assembly 120, the heating jacket 102 can continue to heat and evaporate the brine in the box 101, so that the water content continues to decrease to compensate for the decrease in solution concentration caused by the precipitation of crystal salts. This ensures that the brine remains in a near-saturated or supersaturated state at least during the main crystal loading stage, so that different crystal loading assemblies 120 can continuously or intermittently carry newly formed crystal salts.

[0030] Step 6, Carrier Folding and Pre-loosening of Crystallized Salt: After the crystal carrier assembly 120 with crystallized salt moves with the conveyor belt 111 to the area where the carrier folding assembly 140 is located, the first carrier 123 and the second carrier 124 sequentially contact the multiple spheres 143 set at the end of the support rod 142. As the conveyor belt 111 continues to drive the crystal carrier assembly 120 to move, the ball 143 exerts a pushing effect on the first carrier 123 and the second carrier 124, causing the first carrier 123 and the second carrier 124 to overcome the elastic effect of the reset spring hinge 122 and rotate towards the conveyor belt 111 with the connection position with the mounting frame 121 as the rotation position. During the process of the first carrier 123 and the second carrier 124 changing from the unfolded state to the folded state, their surface posture changes accordingly, causing the crystalline salts attached to the surface of the first carrier 123 and the second carrier 124 to be mechanically disturbed by the rotation of the carriers, and some of the crystalline salts loosen and detach from the first carrier 123 and the second carrier 124. After the crystal carrier assembly 120 continues to move and separates from the sphere 143, it enters the area where the limiting plate 144 is located. The limiting plate 144 limits the first carrier 123 and the second carrier 124 that have been folded, so that the first carrier 123 and the second carrier 124 are temporarily kept in the folded state, and continue to move with the conveyor belt 111 to the area where the crystal removal and knocking assembly 160 is located.

[0031] Step 7, detaching the crystallized salt by knocking: When the first carrier plate 123 and the second carrier plate 124 after being folded are in the restricted state of the limiting plate 144, the second motor 152 is started. The second motor 152 drives the screw conveyor 153 to rotate, and drives the reciprocating drive cam 154 fixed on it to rotate synchronously through the screw conveyor 153. During the rotation of the reciprocating drive cam 154, different positions on its outer periphery act sequentially on the movable seat 155. When the reciprocating drive cam 154 pushes the movable seat 155 to move, the movable seat 155 drives the double-sided rack 156 and the connecting plate 157 to move, and causes the return spring 158 to undergo elastic deformation. As the reciprocating drive cam 154 continues to rotate and reduces its pushing force on the movable seat 155, the return spring 158 drives the double-sided rack 156 and the movable seat 155 to return to their original positions through the connecting plate 157, so that the double-sided rack 156 reciprocates under the combined action of the reciprocating drive cam 154 and the return spring 158.

[0032] During the reciprocating movement of the double-sided rack 156, it meshes with the first gears 164 located on both sides of it, driving the two first gears 164 to rotate. The two first gears 164 respectively drive the corresponding rotating rods 162 to rotate, causing the multiple hitting balls 163 mounted on the rotating rods 162 to move.

[0033] When the first carrier 123 and the second carrier 124, which are in a folded state, pass through the crystal removal and striking assembly 160, the moving striking ball 163 strikes the first carrier 123 and the second carrier 124, causing the loosened crystal salt, which has been folded in step six, to further detach from the surface of the first carrier 123 and the second carrier 124. The detached crystal salt falls into the semi-cylinder 105 located below the crystal carrier assembly 120 and connected to the inside of the box 101 under its own gravity, thus realizing the centralized collection of crystal salt.

[0034] Step 8, conveying and discharging crystallized salt: While the second motor 152 drives the reciprocating drive cam 154 and causes the crystallization knocking component 160 to perform a knocking action, the second motor 152 continuously drives the spiral conveying rod 153 to rotate; the spiral conveying rod 153 receives the crystallized salt falling into the semi-cylinder 105 and conveys the crystallized salt along the semi-cylinder 105 towards the salt discharge pipe 106 through its own spiral structure, so that the crystallized salt is discharged through the salt discharge pipe 106.

[0035] Step 9, Crystallization Mother Liquor Discharge: After the high-salt water in the tank 101 has undergone a preset number of evaporation and crystallization cycles, the operation of the heating jacket 102 and the conveyor belt 111 is stopped, and the remaining crystallization mother liquor is discharged through the mother liquor discharge pipe 104 to be transported to subsequent concentration, incineration, membrane treatment or other treatment units suitable for treating high-salt mother liquor; the crystallization mother liquor is not necessarily treated water that can be directly discharged.

[0036] Example 2: Figures 1 to 13 As shown, a high-salt, high-concentration food wastewater treatment device includes an evaporation crystallization and salt discharge mechanism 100 and a filtration mechanism 200. The filtration mechanism 200 and the evaporation crystallization and salt discharge mechanism 100 are connected by a material pump 204. The high-salt water after filtration by the filtration mechanism 200 is transported by the material pump 204 to the evaporation crystallization and salt discharge mechanism 100, so that the filtration process and the subsequent desalination process are carried out in sequence.

[0037] Specifically, by setting the filtration mechanism 200 at the front end of the evaporation crystallization salt discharge mechanism 100, the high-salt, high-concentration food wastewater containing impurities undergoes solid-liquid separation before entering the evaporation crystallization salt discharge mechanism 100, reducing the possibility that food residues and other impurities will adhere to the crystal-carrying part or be discharged with the crystallized salt after entering the evaporation crystallization salt discharge mechanism 100; at the same time, the impurity discharge path in the filtration mechanism 200 is separated from the high-salt water transport path after filtration, so that the impurities can be discharged separately by the filtration mechanism 200.

[0038] like Figures 1 to 3 As shown, the evaporation crystallization salt discharge mechanism 100 includes a housing 101, a heating jacket 102, a steam discharge pipe 103, a mother liquor discharge pipe 104, a semi-cylinder 105, a salt discharge pipe 106, and a closed-loop guide groove 107. The housing 101 is used to contain the high-salt water after filtration by the filtration mechanism 200. The housing 101 consists of a vertical part and a horizontal part. The interior of the housing 101 forms a working space for storing high-salt water and for the subsequent crystal carrier assembly 120 to circulate and move.

[0039] The housing 101 has a preset working liquid level during normal evaporation and crystallization. This preset working liquid level is lower than the crystallization salt detachment area where the substrate turning assembly 140, the crystal removal and knocking assembly 160, and the semi-cylinder 105 are located. This causes the circulation path of the conveyor belt 111 to form a crystal-carrying zone below the high-salt water surface and a crystal removal zone above the high-salt water surface. The crystal-carrying assembly 120 contacts the high-salt water in the crystal-carrying zone and carries the crystallized salt. After leaving the liquid surface, it enters the crystal removal zone for turning, knocking, and crystallization salt collection, thereby reducing the risk of crystallized salt that has detached from the substrate re-entering the high-salt water and dissolving.

[0040] The heating jacket 102 is fitted onto the outside of the box 101 to transfer heat to the box 101 and heat the high salt water inside the box 101.

[0041] A steam discharge pipe 103 is installed on the tank 101 and communicates with the inside of the tank 101 to discharge the water vapor generated during the heating process of the high brine; a mother liquor discharge pipe 104 is installed at the bottom of the tank 101 and communicates with the inside of the tank 101 to discharge the liquid inside the tank 101 as needed for processing.

[0042] A semi-cylinder 105 is installed on the transverse portion of the housing 101. The semi-cylinder 105 is connected to the interior of the housing 101 and is located below the area where the crystallized salt falls off. A salt discharge pipe 106 is installed on the semi-cylinder 105 and communicates with the interior of the semi-cylinder 105 to form a discharge channel for the crystallized salt.

[0043] Two closed-loop guide grooves 107 are installed on the inner wall of the housing 101. The two closed-loop guide grooves 107 are set along the running path of the subsequent conveyor belt 111 to guide the guide slide bar 112 on the conveyor belt 111.

[0044] Specifically, when the heating jacket 102 heats the box 101, some of the water in the high-salt water inside the box 101 is heated to form water vapor, which can be discharged out through the steam exhaust pipe 103, so that the water content in the high-salt water inside the box 101 gradually decreases, thereby increasing the salt concentration of the high-salt water.

[0045] The purpose of evaporating and concentrating the high-salt water using the heating jacket 102 is to bring at least one precipitable salt to be removed into a saturated or supersaturated state at its corresponding operating temperature. Once the high-salt water reaches this saturated or supersaturated state, the precipitable salts in the solution can form crystal nuclei on the nucleation surfaces provided by the first and second carriers 123 and continue to grow. For food wastewater containing multiple salts, different salts can precipitate sequentially or together according to their solubility and crystallization conditions. The crystalline salt described in this embodiment is not limited to a single salt.

[0046] like Figures 2 to 4As shown, a conveyor belt 111 is installed inside the housing 101. Multiple guide rods 112 are installed through the conveyor belt 111. The multiple guide rods 112 are spaced apart along the running direction of the conveyor belt 111. The two ends of each guide rod 112 are slidably connected to two closed-loop guide grooves 107 respectively.

[0047] Inside the housing 101, a drive roller 132, a first driven roller 133, and a second driven roller 134 are rotatably mounted. The drive roller 132, the first driven roller 133, and the second driven roller 134 are in contact with the conveyor belt 111, and together support and guide the conveyor belt 111, so that the conveyor belt 111 can form a circulating running path along the vertical and horizontal parts of the housing 101.

[0048] The first motor 131 is installed outside the housing 101, and the power output shaft of the first motor 131 extends into the housing 101 and is fixedly connected to the drive roller 132.

[0049] Specifically, during the operation of the conveyor belt 111, multiple guide slide rods 112 move synchronously with the conveyor belt 111. The two ends of each guide slide rod 112 slide along two closed-loop guide grooves 107 respectively. The movement path of the conveyor belt 111 and the crystal carrier assembly 120 installed on the conveyor belt 111 is restricted by the cooperation of the guide slide rods 112 and the closed-loop guide grooves 107, so that the crystal carrier assembly 120 can pass through the high saline area, the crystal salt separation area and the crystal salt knocking and cleaning area in sequence along the predetermined circulation path.

[0050] like Figure 4 and Figure 5 As shown, multiple die carrier assemblies 120 are mounted on the conveyor belt 111, and the multiple die carrier assemblies 120 are spaced apart along the running direction of the conveyor belt 111. Each die carrier assembly 120 includes a mounting frame 121, a reset spring hinge 122, a first carrier plate 123, and a second carrier plate 124.

[0051] Mounting bracket 121 is fixedly mounted on conveyor belt 111, enabling it to move synchronously with the conveyor belt 111. Return spring hinge 122 is mounted on mounting bracket 121. First carrier plate 123 and second carrier plate 124 are respectively connected to mounting bracket 121 via return spring hinge 122, allowing them to rotate relative to mounting bracket 121.

[0052] When not subjected to external pushing, the first carrier 123 and the second carrier 124 remain in an unfolded state under the elastic action of the return spring hinge 122; when the first carrier 123 and the second carrier 124 are pushed in the direction of the conveyor belt 111, the first carrier 123 and the second carrier 124 can overcome the elastic action of the return spring hinge 122 and rotate in the direction closer to the conveyor belt 111; when the external pushing or limiting action is released, the first carrier 123 and the second carrier 124 return to the unfolded state under the rebound action of the return spring hinge 122.

[0053] The sides of the first carrier 123 and the second carrier 124 away from the conveyor belt 111 are roughened, while the sides facing the conveyor belt 111 are smooth. The roughened surfaces of the first carrier 123 and the second carrier 124 provide nucleation sites for crystal formation. These roughened surfaces may have microgrooves, bumps, textures, or other microstructures that increase surface roughness. The smooth surfaces of the first carrier 123 and the second carrier 124 have a lower surface roughness than the roughened surfaces. Preferably, the inner walls of the housing 101, the conveyor belt 111, and other non-crystallizing components that come into contact with high-salt water are made of relatively smooth, salt-resistant materials or have low adhesion surfaces. This makes the nucleation conditions on the roughened surfaces of the carriers better than on the surrounding non-crystallizing surfaces, thereby increasing the probability of crystalline salt forming on the carrier surfaces.

[0054] Specifically, after the crystal carrier assembly 120 enters the high-salt water area within the housing 101 via the conveyor belt 111, the first carrier plate 123 and the second carrier plate 124, in their unfolded state, can fully contact the high-salt water. As the concentration of the high-salt water increases, salt can form crystals on the surfaces of the first carrier plate 123 and the second carrier plate 124, making the first carrier plate 123 and the second carrier plate 124 the carriers for carrying the crystallized salt. Since multiple crystal carrier assemblies 120 are spaced apart along the conveyor belt 111, the continuous operation of the conveyor belt 111 can drive different crystal carrier assemblies 120 to enter and leave the high-salt water area sequentially, thereby forming a continuous cyclic crystal carrier process.

[0055] like Figure 6 As shown, a wafer folding assembly 140 is provided in the transverse portion of the housing 101. The wafer folding assembly 140 includes two first mounting plates 141, multiple support rods 142, multiple spheres 143, and two limiting plates 144. The two first mounting plates 141 are fixedly installed on the inner wall of the housing 101 and are respectively located on both sides of the running path of the wafer carrier assembly 120. Multiple support rods 142 are respectively installed on the two first mounting plates 141. Each support rod 142 has a different height, and a sphere 143 is installed at the end of each support rod 142.

[0056] Two limiting plates 144 are fixedly installed on the inner wall of the housing 101 and are positioned behind the sphere 143 along the moving direction of the crystal carrier assembly 120.

[0057] Specifically, as the conveyor belt 111 moves the crystal carrier assembly 120 toward the wafer folding assembly 140, the first wafer 123 and the second wafer 124, which are in the unfolded state, gradually come into contact with the plurality of spheres 143. Since the plurality of spheres 143 are respectively mounted on support rods 142 at different heights, as the crystal carrier assembly 120 continues to move, the spheres 143 can exert a gradual pushing force on the first wafer 123 and the second wafer 124, causing the first wafer 123 and the second wafer 124 to rotate toward the conveyor belt 111 with the return spring hinge 122 as the rotational connection position.

[0058] When the first carrier 123 and the second carrier 124 change from the unfolded state to the folded state, the spatial orientation and speed of the carrier change, causing the crystalline salt attached to the rough surface of the carrier to be subjected to the change in the direction of gravity and the inertial disturbance generated by the rotation of the carrier. Crystalline salt with low adhesion strength or that has formed cracks can slip, loosen or detach.

[0059] After the crystal carrier assembly 120 continues to move with the conveyor belt 111 and leaves the sphere 143, the first carrier 123 and the second carrier 124, after being folded, enter the area where the two limiting plates 144 are located. The two limiting plates 144 limit the first carrier 123 and the second carrier 124, so that the first carrier 123 and the second carrier 124 cannot immediately return to the unfolded state under the spring action of the reset spring hinge 122, but remain in the folded state and continue to move towards the position of the crystal removal knocking assembly 160.

[0060] The first carrier 123 and the second carrier 124 with attached crystallized salt are first folded by the carrier folding assembly 140, so that the original attachment state between the crystallized salt and the first carrier 123 and the second carrier 124 is disturbed and some of the crystallized salt is pre-detached; then the folding state of the first carrier 123 and the second carrier 124 is maintained by the limiting plate 144.

[0061] like Figure 7 and Figure 8 As shown, the evaporation crystallization salt discharge mechanism 100 also includes a salt discharge drive assembly 150, which includes a fixed frame 151, a second motor 152, a spiral conveying rod 153, a reciprocating drive cam 154, a moving seat 155, a double-sided rack 156, a connecting plate 157, and a return spring 158.

[0062] The fixing frame 151 is fixedly installed on the outer surface of the housing 101, and the second motor 152 is installed on the fixing frame 151. The power output end of the second motor 152 is connected to the screw conveyor 153, which extends into the interior of the semi-cylinder 105 and is rotatably connected to the semi-cylinder 105, so that the screw conveyor 153 can rotate around its own axis under the drive of the second motor 152.

[0063] A reciprocating drive cam 154 is fixedly sleeved on the portion of the screw conveyor 153 located outside the semi-cylinder 105, enabling the reciprocating drive cam 154 to rotate synchronously with the screw conveyor 153. A movable seat 155 is located at the corresponding position of the reciprocating drive cam 154 and contacts the outer periphery of the reciprocating drive cam 154. The movable seat 155 is connected to the lower end of the double-sided rack 156, and the upper end of the double-sided rack 156 is connected to the connecting plate 157.

[0064] The connecting plate 157 is disposed inside the fixed frame 151. The connecting plate 157 is connected to the fixed frame 151 through the return spring 158, so that the connecting plate 157 and the double-sided rack 156 connected thereto have a tendency to return to the direction of the reciprocating drive cam 154.

[0065] Specifically, when the second motor 152 is started, it drives the screw conveyor 153 to rotate continuously. The part of the screw conveyor 153 located inside the semi-cylinder 105 rotates on its own, pushing the crystallized salt falling into the semi-cylinder 105 along the axial direction of the screw conveyor 153 toward the salt discharge pipe 106, so that the crystallized salt can be discharged through the salt discharge pipe 106.

[0066] Simultaneously, the screw conveyor 153 drives the reciprocating drive cam 154 to rotate synchronously. When the protruding part of the reciprocating drive cam 154 gradually rotates to the position of the moving seat 155, the reciprocating drive cam 154 pushes the moving seat 155 to move, causing the moving seat 155 to drive the double-sided rack 156 and the connecting plate 157 to move, and causing the return spring 158 to elastically deform. When the reciprocating drive cam 154 continues to rotate and its pushing amount on the moving seat 155 decreases, the return spring 158 drives the double-sided rack 156 and the moving seat 155 to return to their original positions in the opposite direction through the connecting plate 157. When the reciprocating drive cam 154 rotates continuously, the moving seat 155, the double-sided rack 156, and the connecting plate 157 form a periodic reciprocating movement.

[0067] like Figure 6 and Figure 7 As shown, the evaporation crystallization and salt removal mechanism 100 also includes a crystal removal and knocking assembly 160, which includes two fixed plates 161, two rotating rods 162, multiple striking balls 163, and two first gears 164.

[0068] Both fixing plates 161 are installed on the inner wall of the housing 101 and are located near the moving area of ​​the crystal carrier 120 corresponding to the two limiting plates 144. The two rotating rods 162 are rotatably connected to the two fixing plates 161 respectively, and both rotating rods 162 extend to the outside of the housing 101 and form a rotational engagement with the housing 101.

[0069] Multiple striking balls 163 are mounted on the portion of the rotating rod 162 located inside the housing 101, and the multiple striking balls 163 are spaced apart along the length of the rotating rod 162. A first gear 164 is fixedly fitted onto the portion of the rotating rod 162 located outside the housing 101. Two first gears 164 are respectively located on both sides of a double-sided rack 156 and mesh with the double-sided rack 156.

[0070] Specifically, when the reciprocating drive cam 154 drives the double-sided rack 156 to move up and down reciprocally, the double-sided rack 156 drives the two first gears 164 to rotate through the tooth surfaces on both sides. The two first gears 164 drive the corresponding rotating rods 162 to rotate, thereby causing the multiple striking balls 163 set on the rotating rods 162 to move with the rotating rods 162.

[0071] At this time, the first carrier 123 and the second carrier 124, which are folded by the carrier folding assembly 140 and kept in the folded state by the limiting plate 144, move to the position of the de-crystallization and knocking assembly 160. The moving striking ball 163 makes intermittent contact with the first carrier 123 and the second carrier 124, forming a mechanical striking effect on the first carrier 123 and the second carrier 124.

[0072] Before entering the crystal removal and striking assembly 160, the first carrier 123 and the second carrier 124 have already been folded by the carrier folding assembly 140. The crystalline salts attached to the surfaces of the first carrier 123 and the second carrier 124 have been loosened to a certain extent. After the striking ball 163 further acts, the remaining attached crystalline salts can continue to detach from the first carrier 123 and the second carrier 124 and fall into the semi-cylinder 105 under their own gravity.

[0073] like Figure 9 and Figure 10 As shown, the filtration mechanism 200 includes an outer cylinder 201, a feed pipe 202, a slag discharge pipe 203, a material pump 204, an inner cylinder 211, an elastic filter screen 212, an elastic spiral conveying blade 214, and a conveying motor 215.

[0074] The outer cylinder 201 forms the external housing structure of the filter mechanism 200. The feed pipe 202 is installed on the outer cylinder 201 and communicates with the inside of the outer cylinder 201. It is used to send the high brine containing impurities to be treated into the outer cylinder 201. The slag discharge pipe 203 is installed on the outer cylinder 201 and communicates with the inside of the outer cylinder 201. It is used to discharge the impurities trapped in the filtration process.

[0075] The inner cylinder 211 is rotatably installed inside the outer cylinder 201, and the top of the inner cylinder 211 is an open structure. Multiple through slots are opened through the cylinder wall of the inner cylinder 211, and each through slot is equipped with an elastic filter screen 212, so that the elastic filter screen 212 forms a filter interface between the inside and outside of the inner cylinder 211.

[0076] The flexible spiral conveyor blades 214 are installed on the outer surface of the inner cylinder 211 and extend spirally along the axial direction of the inner cylinder 211. The outer side of the flexible spiral conveyor blades 214 contacts the inner wall of the outer cylinder 201. The conveying motor 215 is installed at the bottom of the outer cylinder 201. The power output shaft of the conveying motor 215 extends into the interior of the outer cylinder 201 and is fixedly connected to the inner cylinder 211, for driving the inner cylinder 211 to rotate around its own axis.

[0077] Specifically, after the impurity-laden high-salt water to be treated enters the outer cylinder 201 through the feed pipe 202, the impurity-laden high-salt water is initially located between the inner cylinder 211 and the outer cylinder 201. When the high-salt water passes through the elastic filter screen 212, the liquid that can pass through the elastic filter screen 212 enters the interior of the inner cylinder 211, while the impurities that cannot pass through the elastic filter screen 212 are trapped on the outside of the inner cylinder 211, that is, retained between the inner cylinder 211 and the outer cylinder 201.

[0078] When the conveying motor 215 is running, it drives the inner cylinder 211 to rotate, and the inner cylinder 211 synchronously drives the elastic spiral conveying blades 214 installed on its outer surface to rotate. Since the elastic spiral conveying blades 214 are located between the inner cylinder 211 and the outer cylinder 201 and are in contact with the inner wall of the outer cylinder 201, the elastic spiral conveying blades 214 can push the debris trapped by the elastic filter screen 212 in this area to move along the axial direction of the outer cylinder 201 towards the slag discharge pipe 203 during the rotation of the elastic spiral conveying blades 214, so that the debris is finally discharged from the slag discharge pipe 203.

[0079] like Figures 11 to 13 As shown, an internal toothed ring 213 is installed on the inner wall of the inner cylinder 211. Inside the inner cylinder 211, there is a rotating shaft support plate 221 and two cleaning shafts 222. The two cleaning shafts 222 are arranged vertically, and the upper ends of the two cleaning shafts 222 are rotatably connected to the outer cylinder 201.

[0080] Each cleaning shaft 222 located inside the inner cylinder 211 is fitted with multiple elastic cleaning cams 223. These elastic cleaning cams 223 are spaced apart along the extension direction of the cleaning shaft 222 and correspond to the positions of the elastic filter screen 212. The elastic cleaning cams 223 are soft structures capable of deformation.

[0081] Each screen cleaning shaft 222 located inside the inner cylinder 211 is also fixedly fitted with a second gear 224, which meshes with an internal gear ring 213 provided on the inner wall of the inner cylinder 211.

[0082] Specifically, when the feeding motor 215 drives the inner cylinder 211 to rotate, the internal gear ring 213, which is fixedly installed on the inner wall of the inner cylinder 211, rotates synchronously with the inner cylinder 211. The internal gear ring 213 drives the second gear 224 to rotate through meshing, and the second gear 224 further drives the corresponding screen cleaning shaft 222 to rotate around its own axis. The screen cleaning shaft 222 drives multiple elastic screen cleaning cams 223 fixed on it to rotate synchronously.

[0083] When the elastic cleaning cam 223 rotates to a position facing the corresponding elastic filter 212, the elastic cleaning cam 223 contacts the elastic filter 212 and pushes it, causing the elastic filter 212 to undergo local elastic deformation. As the elastic cleaning cam 223 continues to rotate, the pushing action of the elastic cleaning cam 223 on the elastic filter 212 gradually dissipates, and the elastic filter 212 returns to its original state. When the cleaning shaft 222 rotates continuously, multiple elastic cleaning cams 223 repeat the above actions, causing the corresponding elastic filter 212 to undergo periodic local deformation.

[0084] When the elastic filter screen 212 deforms, the spatial shape of its filter surface changes accordingly, causing debris attached to the outside of the elastic filter screen 212 to be disturbed by the deformation of the elastic filter screen 212 itself, and loosening or detaching from the surface of the elastic filter screen 212. The detached debris is still located between the inner cylinder 211 and the outer cylinder 201, and can be continued to be conveyed towards the slag discharge pipe 203 by the rotating elastic spiral conveying blades 214.

[0085] like Figure 1 and Figure 9 As shown, the material pump 204 is installed on the outer cylinder 201. The material pump 204's suction end extends to the central area inside the inner cylinder 211, and the material pump 204's discharge end extends to the inside of the housing 101 of the evaporation crystallization salt discharge mechanism 100.

[0086] Specifically, the high-salt water after being filtered by the elastic filter screen 212 enters the inner cylinder 211 and is separated from the debris located on the outside of the inner cylinder 211. After the material pump 204 is running, it draws the pre-filtered high-salt water from the inner cylinder 211 and directly transports the high-salt water to the box 101, so that the high-salt water enters the evaporation crystallization salt discharge mechanism 100 through the filtration mechanism 200 for subsequent concentration and desalination.

[0087] Working Principle: In practical use, the high-salt, high-concentration food wastewater containing impurities first enters the filtration mechanism 200. During the filtration process, the conveying motor 215 drives the inner cylinder 211 to rotate. The inner cylinder 211 drives the elastic spiral conveying blades 214 to rotate synchronously, causing the food residue and other impurities trapped between the inner cylinder 211 and the outer cylinder 201 by the elastic filter screen 212 to migrate towards the slag discharge pipe 203. On the other hand, the inner cylinder 211 drives the cleaning shaft 222 to rotate through the meshing relationship between the internal gear ring 213 and the second gear 224, causing multiple elastic cleaning cams 223 set on the cleaning shaft 222 to act sequentially on the corresponding elastic filter screens 212. Under the periodic action of the elastic cleaning cams 223, the elastic filter screen 212 undergoes local elastic deformation, thereby disturbing the impurities attached to its surface, promoting the loosening or detachment of the attached impurities. The detached impurities are further conveyed towards the slag discharge pipe 203 by the elastic spiral conveying blades 214. Therefore, the power provided by the conveying motor 215 can be used for both conveying debris and dynamically cleaning the elastic filter screen 212, so that the filtration and slag discharge processes are linked together.

[0088] The high-salt water, after passing through the elastic filter screen 212, enters the inner cylinder 211 and is then transported by the material pump 204 to the housing 101 of the evaporation crystallization salt discharge mechanism 100. The heating jacket 102 heats the high-salt water in the housing 101, causing some of the water to evaporate and be discharged through the steam discharge pipe 103, thereby evaporating and concentrating the high-salt water. When at least some of the concentrated high-salt water is ready to crystallize, the first motor 131 drives the conveyor belt 111 to circulate via the drive roller 132, causing multiple crystal-carrying components 120 to sequentially enter and leave the high-salt water area according to a predetermined path. When the first carrier plate 123 and the second carrier plate 124 enter the high saline area, they remain in an unfolded state under the action of the reset spring hinge 122, contacting the high saline and carrying the crystallized salt formed on their surface; as the conveyor belt 111 continues to run, the crystal carrier assembly 120 carrying the crystallized salt is carried away from the high saline area and sequentially enters the subsequent turning and knocking areas, so that the formation, carrying and mechanical separation of the crystallized salt are carried out sequentially along the cyclic movement path of the crystal carrier assembly 120.

[0089] When the crystal carrier assembly 120 carrying crystalline salt moves to the position of the carrier folding assembly 140, the spheres 143 at different positions sequentially push the first carrier 123 and the second carrier 124, causing the first carrier 123 and the second carrier 124 to gradually overcome the elastic effect of the return spring hinge 122 and rotate towards the conveyor belt 111. During the process of the carrier changing from the unfolded state to the folded state, its spatial posture changes, causing the crystalline salt attached to the surface of the carrier to be affected by the rotation of the carrier, the change in the direction of gravity, and mechanical disturbance, thereby causing the crystalline salt with low adhesion strength to loosen or detach. After the first carrier 123 and the second carrier 124 have completed the folding, they enter the area of ​​the limiting plate 144 and are temporarily kept in the folded state under the action of the limiting plate 144, so that the carrier enters the area of ​​the de-crystallizing and knocking assembly 160 in a preset posture.

[0090] The second motor 152 provides the common power for the knocking off and conveying out of the crystallized salt. When the second motor 152 drives the screw conveyor 153 to rotate, the screw conveyor 153 synchronously drives the reciprocating drive cam 154 to rotate. The reciprocating drive cam 154 cooperates with the return spring 158 to make the moving seat 155 and the double-sided rack 156 reciprocate. The double-sided rack 156 then drives the corresponding rotating rod 162 to rotate through the meshing relationship with the two first gears 164, so that multiple striking balls 163 intermittently mechanically act on the first carrier 123 and the second carrier 124 passing through the knocking area. Since the first carrier 123 and the second carrier 124 have been folded by the carrier folding assembly 140 before entering the knocking area and some of the crystallized salt has been loosened, the further action of the striking balls 163 can promote the detachment of the remaining attached crystallized salt from the carrier surface, thus forming a continuous decrystallization process of carrier folding pre-loosening and mechanical knocking further detachment.

[0091] Crystalline salt detached from the first carrier plate 123 and the second carrier plate 124 enters the lower semi-cylinder 105 under the action of gravity. Simultaneously, the second motor 152 continuously drives the screw conveyor 153 to rotate, ensuring that the crystalline salt entering the semi-cylinder 105 is promptly conveyed towards the salt discharge pipe 106 and discharged through it. Therefore, the power of the second motor 152 is transmitted to the crystal removal and knocking assembly 160 via the reciprocating drive cam 154, double-sided rack 156, and first gear 164 to promote crystalline salt detachment; and it is also directly used to drive the screw conveyor 153 to transport the crystalline salt, thus linking the mechanical detachment and discharge of the crystalline salt, reducing the possibility of the detached crystalline salt continuously accumulating in the semi-cylinder 105 and affecting the operation of the subsequent crystal carrier assembly 120.

[0092] After the crystal carrier assembly 120 completes the knocking process and continues to move with the conveyor belt 111, it leaves the limiting plate 144. The first carrier plate 123 and the second carrier plate 124 lose their external limiting and return to their unfolded state under the rebound action of the return spring hinge 122. Then, they re-enter the high-salt water area with the conveyor belt 111 for the next crystal carriering. Thus, multiple crystal carrier assemblies 120 sequentially complete the processes of crystal carriering, folding pre-loosening, knocking crystal removal, and resetting along the circulation path, so that the crystalline salt formed during the evaporation and concentration process can be gradually separated and discharged from the high-salt water system in a circulating mechanical manner.

[0093] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A process for treating high-salt, high-concentration food wastewater, characterized in that, Includes the following steps: Step 1: High-salt, high-concentration food wastewater is introduced between the outer and inner cylinders and filtered through an elastic filter screen, allowing the high-salt water to enter the inner cylinder and trapping solid impurities. The inner cylinder is driven to rotate, causing the elastic spiral conveyor blades to transport the trapped impurities. At the same time, the internal gear ring, the second gear, and the cleaning screen shaft drive the elastic cleaning cam to periodically push the elastic filter screen to deform and transport the detached impurities out. Step 2: The filtered high-salt water is transported to the tank and heated and evaporated by the heating jacket, so that at least one precipitable salt in the high-salt water reaches a saturated or supersaturated state at the current operating temperature. Step 3: Drive the conveyor belt to make the crystal carrier assembly circulate, so that the first and second carriers can carry the precipitated crystal salt in the high saline area; Step 4: After the crystal carrier assembly leaves the high saline solution, multiple spheres are used to push the first and second carrier wafers to rotate in sequence, so that the crystal salt is loosened in advance, and the carrier wafers are kept in the rotated state by the limiting plate. Step 5: Use a striking ball to strike the first and second carrier plates, which are in a folded state, to cause the crystalline salt to fall into the semi-cylinder; Step 6: Drive the screw conveyor to transport the crystallized salt in the semi-cylinder to the salt discharge pipe for discharge. After the carrier is released from the limit, it is reset by the action of the reset spring hinge and re-enters the high saline area to carry crystals.

2. A high-salt, high-concentration food wastewater treatment device for implementing the process of claim 1, comprising an evaporation, crystallization, and salt discharge mechanism, wherein the evaporation, crystallization, and salt discharge mechanism comprises a housing and a conveyor belt, characterized in that, The evaporation, crystallization, and salt removal mechanism also includes: Multiple die carrier assemblies are disposed on the conveyor belt. Each die carrier assembly includes a mounting frame, a reset spring hinge, a first carrier sheet, and a second carrier sheet. The first carrier sheet and the second carrier sheet are rotatably connected to the mounting frame via the reset spring hinge. The slide folding assembly includes multiple spheres and two limiting plates located on the moving trajectories of the first and second slides; The crystal removal and knocking component is set in the crystal carrier component movement area corresponding to the limiting plate; A semi-cylinder is located below the area where crystallized salt falls off, and a salt discharge pipe is installed at its bottom; The salt discharge drive assembly includes a second motor and a spiral conveyor rod, the second motor being connected to the spiral conveyor rod, which extends into the semi-cylinder and is connected in drive to the desiccanting and knocking assembly.

3. The high-salt, high-concentration food wastewater treatment equipment according to claim 2, characterized in that, The side of the first and second carriers away from the conveyor belt is rough, while the side facing the conveyor belt is smooth.

4. The high-salt, high-concentration food wastewater treatment equipment according to claim 3, characterized in that, The wafer folding assembly further includes: Both first mounting plates are fixedly installed on the inner wall of the housing and are located on both sides of the crystal carrier module's running path, respectively. Multiple support rods are respectively mounted on two first mounting plates, and the multiple support rods have different heights. The spheres are respectively mounted on the ends of the support rods.

5. The high-salt, high-concentration food wastewater treatment equipment according to claim 3, characterized in that, The descaling and knocking assembly includes: Both fixing plates are installed on the inner wall of the box; Two rotating rods are rotatably connected to two fixed plates respectively, and extend to the outside of the box; Multiple striking balls are installed at intervals along the length of the rotating rod in the part of the rotating rod located inside the housing, for striking the first and second carrier plates that are in a folded state; Two first gears are respectively fixedly sleeved on the parts of the two rotating rods located outside the housing.

6. The high-salt, high-concentration food wastewater treatment equipment according to claim 5, characterized in that, The salt removal drive component also includes: A mounting bracket is fixedly installed on the outer surface of the housing, and the second motor is mounted on the mounting bracket. A reciprocating drive cam is fixedly sleeved on the part of the screw conveyor rod located outside the semi-cylinder; The movable seat contacts the outer peripheral contour of the reciprocating drive cam; A double-sided rack, the lower end of which is connected to a movable seat and the upper end of which is connected to a connecting plate, and two first gears are located on both sides of the double-sided rack and mesh with the double-sided rack. A return spring is connected between the connecting plate and the fixed frame.

7. The high-salt, high-concentration food wastewater treatment equipment according to claim 2, characterized in that, The evaporation, crystallization, and salt removal mechanism also includes: Two closed-loop guide grooves are set on the inner wall of the housing; Multiple guide rods are installed through the conveyor belt, and the two ends of the guide rods are slidably connected to two closed-loop guide grooves respectively; A first motor is installed outside the housing, and its power output shaft extends into the housing. A drive roller, a first driven roller, and a second driven roller are rotatably installed inside the housing. The drive roller is fixedly connected to the power output shaft of the first motor.

8. The high-salt, high-concentration food wastewater treatment equipment according to claim 7, characterized in that, The outer side of the box is fitted with a heating jacket; a steam exhaust pipe communicating with the interior is installed on the box, and a mother liquor discharge pipe communicating with the interior is installed at the lower part of the box.

9. The high-salt, high-concentration food wastewater treatment equipment according to claim 2, characterized in that, It also includes a filtration mechanism, which comprises: The outer cylinder is equipped with a feed pipe and a slag discharge pipe that communicate with its interior. The inner cylinder is rotatably installed inside the outer cylinder, and its cylinder wall has multiple through slots, each of which is equipped with an elastic filter screen. The flexible spiral conveyor blades are installed on the outer surface of the inner cylinder and extend spirally along the axial direction of the inner cylinder, with their outer side contacting the inner wall of the outer cylinder; A material conveying motor is installed at the bottom of the outer cylinder, and its power output shaft is fixedly connected to the inner cylinder; A material pump is installed on the outer cylinder, with its suction end extending into the inner cylinder and its discharge end extending into the housing.

10. The high-salt, high-concentration food wastewater treatment equipment according to claim 9, characterized in that, The filtration system also includes: The internal gear ring is fixedly installed on the inner wall of the inner cylinder; Two screen cleaning shafts are vertically installed inside the inner cylinder, and their upper ends are rotatably connected to the outer cylinder respectively; Multiple elastic screen cleaning cams are fixedly sleeved on the screen cleaning shaft and spaced apart along the extension direction of the screen cleaning shaft, and each corresponds to the position of the elastic filter screen. The second gear is fixedly sleeved on the screen cleaning shaft and meshes with the internal gear ring.

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