Solid-liquid separation device for mariculture tail water

Abstract

The invention discloses a mariculture tail water solid-liquid separation device, and relates to the technical field of solid-liquid separation, the mariculture tail water solid-liquid separation device comprises a feed hopper, the bottom of the feed hopper is fixedly connected with a filter shell, the feed hopper is internally provided with a first extrusion mechanism, and the filter shell is internally provided with a second extrusion mechanism; and a power mechanism is arranged on the right side of the filter shell. In the filtering shell, tail water rapidly passes through water filtering holes in the surface of the filtering shell, primary liquid-solid separation is achieved, clear water is discharged and recycled through the filtering holes, solid impurities are intercepted in the filtering shell, then under the action of a power mechanism, a hollow shaft can drive a crushing blade and a first auger blade to rapidly rotate, and a solid shaft can drive a second auger blade to slowly rotate; according to the design, the two functions of high-speed crushing and low-speed extrusion are ingeniously combined, the problems that moisture in hard impurities is difficult to extrude out and auger blades are prone to being damaged are effectively solved, and the solid-liquid separation efficiency and the practicability of the device are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device for seawater aquaculture tail water. Background Art

[0002] The seawater circulation aquaculture model is essentially different from freshwater aquaculture. It is very convenient to replenish water for freshwater aquaculture, while seawater circulation aquaculture requires replenishment of seawater. In order to save water exchange costs, the tail water is usually recycled. After the solid-liquid separation of the tail water, the resource utilization of biological water purification and solid waste biological fermentation can be realized.

[0003] In the prior art, for example, Chinese patent number: CN113599897A discloses a solid-liquid separation device for seawater aquaculture tail water, a support frame, a feeding mechanism, a power mechanism, a drainage mechanism, a slip ring mechanism, a pressure regulating mechanism and a material storage box, wherein the power mechanism comprises a driving motor, a driving wheel, a transmission belt, a driven wheel and a stirring rod, wherein the output end of the driving motor is connected to the driving wheel, the driving wheel is connected to the driven wheel through a transmission belt, and the stirring rod is installed on the driven wheel; the feeding mechanism comprises a feeding hopper and a material chamber, one end of the stirring rod is connected to the driven wheel, and the other end of the stirring rod passes through the material chamber and the drainage mechanism in sequence and is arranged in the pressure regulating mechanism; the drainage mechanism comprises a clean water tank and a drainage assembly, wherein the drainage assembly comprises a drainage plate and a filter cloth installed on the drainage plate; the pressure regulating mechanism comprises a discharge pipe and a pressure regulating assembly arranged in the discharge pipe, and the device can separate the waste better, and the water content of the separated solid waste is low, which is convenient for subsequent further biological fermentation.

[0004] Although the above patent uses physical extrusion to achieve solid-liquid separation of marine aquaculture tail water, different aquaculture environment factors need to be taken into consideration during the extrusion of the tail water. During the extrusion process, the large pieces of hard impurities gathered in the tail water are difficult to be squeezed out because the water contained in them is protected by external hard substances and is easy to cause damage to the auger blades.

[0005] Therefore, we propose a solid-liquid separation device for seawater aquaculture tail water in order to solve the problems raised in the above background technology. Summary of the invention

[0006] The purpose of the present invention is to provide a solid-liquid separation device for seawater aquaculture tail water to solve the problem proposed in the above background technology that different aquaculture environment factors need to be taken into consideration during the extrusion of tail water, and that during the extrusion process, the large pieces of hard impurities accumulated in the tail water are difficult to be squeezed out due to the protection of external hard substances and are prone to damage the auger blades.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a solid-liquid separation device for seawater aquaculture tail water, comprising a feed hopper, a filter shell is fixedly connected to the bottom of the feed hopper, a first extrusion mechanism is arranged inside the feed hopper, a second extrusion mechanism is arranged inside the filter shell, a power mechanism is arranged on the right side of the filter shell, a pressure mechanism is arranged on the left side of the filter shell, the second extrusion mechanism comprises a hollow shaft, a solid shaft is rotatably connected inside the hollow shaft and the length of the solid shaft is greater than the length of the hollow shaft, a first auger blade is connected to the outer surface of the hollow shaft near the right side, a crushing blade is connected to the outer surface of the hollow shaft near the left side, and a second auger blade is connected to the outer surface of the solid shaft on the left side of the hollow shaft, and the first auger blade and the crushing blade are located below the feed hopper.

[0008] Furthermore, movable grooves are provided on the outer surfaces of both sides of the feed hopper, guide plates are fixedly connected to the front and rear inner walls of the feed hopper, a plurality of water filter holes are arranged at the bottom of the filter shell, the inner bottom of the filter shell is arranged in an arc shape, a top cover is fixedly connected to the position near the left side between the inner walls of the filter shell, and a gathering shell is fixedly connected to the outside of the filter shell, and the upper and lower parts of the gathering shell are open designs.

[0009] Furthermore, the power mechanism includes a cover plate, which is fixedly connected to the right surface of the filter shell, and a mounting frame is fixedly connected to the right surface of the cover plate near the upper part, and a second motor is installed on the right surface of the mounting frame, and the output end of the second motor rotates through the right surface of the mounting frame and extends to the left side.

[0010] Furthermore, the second motor output end is fixedly connected with a first small gear, the left surface of the first small gear is fixedly connected with a first large gear, the outer surface of the first small gear is meshedly connected with the second large gear, and the outer surface of the first large gear is meshedly connected with the second small gear.

[0011] Furthermore, a connecting shaft is fixedly connected at the center of the left surface of the second large gear, and the outer surface of the connecting shaft rotates and passes through the outer surface of the second small gear. The second small gear and the second large gear are arranged in concentric circles, and the left surface of the second small gear is fixedly connected to the right end of the hollow shaft, and the left end of the connecting shaft is fixedly connected to the right end of the solid shaft.

[0012] Furthermore, the pressure mechanism includes a plurality of guide columns, an extrusion block is slidably connected between the outer surfaces of the plurality of guide columns, the right surface of the extrusion block is inclined, the left end of the guide column is fixedly connected to a limiting block, a plurality of springs are connected between the limiting block and the outer surface of the extrusion block, the plurality of springs are respectively sleeved on the outside of the plurality of guide columns, and the left end of the solid shaft is fixedly connected to a scraper.

[0013] Furthermore, the first extrusion mechanism includes four mounting plates, two extrusion rollers and two cylinders, and the four mounting plates are respectively fixedly connected to the outer surfaces of both sides of the feed hopper near the edges, wherein the front surfaces of two of the mounting plates are rotatably connected to the first rotating shaft, and the rear surfaces of the other two mounting plates are rotatably connected to the second rotating shaft, and a sliding rod is fixedly connected between the end surfaces of the first rotating shaft and the second rotating shaft.

[0014] Furthermore, the outer surface of the second rotating shaft is fixedly connected to the first bevel gear, the outer surface of the sliding rod is slidably connected to the second bevel gear, the front surface of the second bevel gear is rotatably connected to the L-shaped bracket, the rear surface of one of the mounting plates is mounted with a first motor, the output end of the first motor rotates through the outer surface of the mounting plate and extends to the other side, and the output end of the first motor is fixedly connected to the outer surface of one of the first rotating shafts.

[0015] Furthermore, the two cylinders are respectively installed between the inner walls of the two movable grooves, and the telescopic ends of the cylinders are fixedly connected with sliding seats, which are slidably embedded between the inner walls of the movable grooves, and the outer surface of the sliding seat is fixedly connected to the outer surface of the L-shaped bracket.

[0016] Furthermore, steel shafts are welded at both ends of the two extrusion rollers, and the ends of the steel shafts are connected to third bevel gears, wherein two of the third bevel gears are respectively meshed with the two first bevel gears, and the other two third bevel gears are respectively meshed with the two second bevel gears, wherein the two steel shafts rotate and penetrate the outer surface of the corresponding sliding seat and the L-shaped bracket.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, in the filter shell, tail water quickly passes through the water filter holes on its surface to achieve preliminary liquid-solid separation, clean water is discharged and recovered through the filter holes, and solid impurities are retained in the filter shell. Next, under the action of the power mechanism, the hollow shaft will drive the crushing blade and the first auger blade to rotate rapidly, and the solid shaft will drive the second auger blade to rotate slowly. This design cleverly combines the two functions of high-speed crushing and low-speed extrusion, effectively avoiding the problem that the internal water of hard impurities is difficult to squeeze out and the auger blade is easily damaged, and significantly improving the solid-liquid separation efficiency and the practicality of the device.

[0018] 2. When the present invention is used, after the moisture in the impurities is squeezed out, it will be gradually transported to the left. When the impurities are transported to the leftmost end, an extrusion force will be generated on the extrusion block. At this time, the extrusion block will squeeze the spring to shrink and start to move away from the filter shell. The right surface of the extrusion block is inclined, so the gap between the extrusion block and the filter shell has a larger opening below, which is convenient for the discharge of solids. During the discharge process, the solid shaft will drive the scraper to rotate slowly. During the rotation of the scraper, the extruded solid impurities can be scraped into pieces and discharged stably. The overall structure is simple, the reliability of use is high, and the cost is low.

[0019] 3. When the present invention is used, the tail water of seawater aquaculture is discharged into the feed hopper and passes between the two squeezing rollers under the action of the guide plate. The first motor is started to drive the first rotating shaft to rotate, so that the sliding rod and the second rotating shaft rotate synchronously. The first bevel gear on the second rotating shaft and the reverse second bevel gear on the sliding rod drive the adjacent third bevel gear to rotate in the reverse direction, so that the two squeezing rollers squeeze the tail water to achieve preliminary solid-liquid separation and improve the subsequent processing efficiency. Since the volume of impurities in the tail water of different seawater aquaculture farms is different, the cylinder in the movable tank is started to pull the sliding seat backward to move the rear squeezing roller away from the front squeezing roller. The sliding seat drives the L-shaped bracket to move, and the L-shaped bracket makes the second bevel gear slide on the sliding rod, and the second bevel gear and the third bevel gear are always meshed. It is suitable for solid-liquid separation of different tail waters, and the function is practical and the degree of automation is high, and no manual repeated adjustment is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a solid-liquid separation device for seawater aquaculture tail water according to the present invention; Figure 2 It is a three-dimensional view from another angle of a solid-liquid separation device for seawater aquaculture tail water of the present invention; Figure 3 It is a cross-sectional view of a solid-liquid separation device for seawater aquaculture tail water according to the present invention; Figure 4 This is a schematic diagram of the structure of the second extrusion mechanism of a marine aquaculture tail water solid-liquid separation device of the present invention; Figure 5 It is a partial structural schematic diagram of a solid-liquid separation device for seawater aquaculture tail water of the present invention; Figure 6 This is a schematic structural diagram of a first extrusion mechanism of a marine aquaculture tail water solid-liquid separation device of the present invention; Figure 7 This is a schematic diagram of the structure of a pressure mechanism of a marine aquaculture tail water solid-liquid separation device of the present invention; Figure 8 The present invention is a schematic diagram of the power mechanism structure of a marine aquaculture tail water solid-liquid separation device.

[0021] In the figure: 1, feed hopper; 11, guide plate; 12, movable groove; 2, first extrusion mechanism; 201, mounting plate; 202, first rotating shaft; 203, second rotating shaft; 204, first bevel gear; 205, sliding rod; 206, second bevel gear; 207, L-shaped bracket; 208, first motor; 209, extrusion roller; 210, steel shaft; 211, third bevel gear; 212, sliding seat; 213, cylinder; 3, filter shell; 31, top cover; 32, gathering shell; 33, water filter hole; 4, the first Second extrusion mechanism; 401, hollow shaft; 402, first auger blade; 403, crushing blade; 404, solid shaft; 405, second auger blade; 406, scraper; 5, pressure mechanism; 501, guide column; 502, extrusion block; 503, limit block; 504, spring; 6, power mechanism; 601, cover plate; 602, mounting frame; 603, second motor; 604, first pinion; 605, first large gear; 606, second large gear; 607, connecting shaft; 608, second pinion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 8As shown, the present invention provides a marine aquaculture tail water solid-liquid separation device, comprising a feed hopper 1, a filter shell 3 is fixedly connected to the bottom of the feed hopper 1, a first extrusion mechanism 2 is arranged inside the feed hopper 1, a second extrusion mechanism 4 is arranged inside the filter shell 3, a power mechanism 6 is arranged on the right side of the filter shell 3, a pressure mechanism 5 is arranged on the left side of the filter shell 3, the second extrusion mechanism 4 comprises a hollow shaft 401, a solid shaft 404 is rotatably connected inside the hollow shaft 401, and the length of the solid shaft 404 is greater than the length of the hollow shaft 401, and the outer surface of the hollow shaft 401 is connected to a position near the right side thereof. The first auger blade 402 and the outer surface of the hollow shaft 401 are connected to a crushing blade 403 near the left side, and the outer surface of the solid shaft 404 is located on the left side of the hollow shaft 401 and is connected to the second auger blade 405. The first auger blade 402 and the crushing blade 403 are located below the feed hopper 1. The outer surfaces of both sides of the feed hopper 1 are provided with movable grooves 12. The inner surface walls of the front and rear sides of the feed hopper 1 are fixedly connected with guide plates 11. A plurality of water filtering holes 33 are arranged at the bottom of the filter shell 3. The inner bottom of the filter shell 3 is arranged in an arc shape. The inner surface walls of the filter shell 3 are fixedly connected near the left side. The top cover 31 is connected, the outside of the filter shell 3 is fixedly connected to the gathering shell 32, and the upper and lower parts of the gathering shell 32 are both open designs, the power mechanism 6 includes a cover plate 601, the cover plate 601 is fixedly connected to the right surface of the filter shell 3, the right surface of the cover plate 601 is fixedly connected to a mounting frame 602 near the upper position, the right surface of the mounting frame 602 is installed with a second motor 603, the output end of the second motor 603 rotates through the right surface of the mounting frame 602 and extends to the left side, the output end of the second motor 603 is fixedly connected to a first pinion 604, the left surface of the first pinion 604 is fixed It is connected to the first large gear 605, the outer surface of the first small gear 604 is meshedly connected to the second large gear 606, the outer surface of the first large gear 605 is meshedly connected to the second small gear 608, the left surface of the second large gear 606 is fixedly connected to a connecting shaft 607 at the center of the circle, the outer surface of the connecting shaft 607 rotates and passes through the outer surface of the second small gear 608, the second small gear 608 and the second large gear 606 are arranged in concentric circles, the left surface of the second small gear 608 is fixedly connected to the right end of the hollow shaft 401, and the left end of the connecting shaft 607 is fixedly connected to the right end of the solid shaft 404.

[0024] In this embodiment, when in use, the tail water of seawater aquaculture is pumped out by a water pump and discharged into the feed hopper 1. Under the action of gravity, the tail water will enter the filter shell 3 below through the feed hopper 1. At this time, the liquid in the tail water will be discharged and recovered from the device through the water filter holes 33 on the surface of the filter shell 3, while the solid impurities will be retained in the filter shell 3. Then the second motor 603 is started. When the second motor 603 is started, it will drive the first small gear 604 and the first large gear 605 to rotate at the same time. After the first small gear 604 rotates, it will drive the second large gear 606 to rotate slowly. When the first large gear 605 rotates, it will drive The second small gear 608 is driven to rotate rapidly. At this time, the hollow shaft 401 connected to the second small gear 608 will rotate rapidly, while the solid shaft 404 connected to the second large gear 606 through the connecting shaft 607 will rotate slowly. In this process, since the feed hopper 1 is located on the right side above the filter shell 3, the tail water impurities just discharged into the filter shell 3 are not squeezed and are relatively loose as a whole. Therefore, the hollow shaft 401 drives the crushing blade 403 to rotate at a high speed to break up the impurities, so that the water and solid can be completely separated. The first auger blade 402 close to the rear side will gradually push the solid impurities to the left during the rapid rotation. The impurities are pushed and gathered. During the process of being pushed, they will pass through the crushing blade 403 to complete the scattered operation, and the impurities close to the right side will be gradually pushed into the area where the second auger blade 405 is located. Therefore, the solid shaft 404 slowly drives the second auger blade 405 to rotate, and the treated tail water and impurities will be transported and squeezed to the left, and then the water contained in the inside will be fully squeezed out and discharged through the water filter hole 33 for collection. This design can effectively avoid the problem that the internal water of the hard impurities formed by aggregation is not only difficult to be squeezed out but also easy to damage the auger blade. The practicality and solid-liquid separation effect are effectively improved. The guide plate on the inner wall of the feed hopper 1 11 are not consistent in length and are mainly used for guiding tail water. The cover plate 601 and the mounting frame 602 are mainly used for connecting the power mechanism 6 and the filter shell 3, and the cover plate 601 has the function of closing the right side of the filter shell 3. The top cover 31 is mainly used for blocking the open position at the top of the filter shell 3, and the bottom is arc-shaped, cooperating with the inside of the filter shell 3 to form a circular channel, so that the second auger blade 405 can produce an effective squeezing force on impurities. The gathering shell 32 is mainly used for shielding the outside of the water filter hole 33 to avoid splashing of seawater at the separation point, and the bottom of the gathering shell 32 can be connected to the collecting device through a connector.

[0025] Embodiment 2: Figure 1-Figure 8As shown, the pressure mechanism 5 includes a plurality of guide columns 501, and an extrusion block 502 is slidably connected between the outer surfaces of the plurality of guide columns 501. The right surface of the extrusion block 502 is inclined. The left end of the guide column 501 is fixedly connected to a limit block 503, and a plurality of springs 504 are connected between the limit block 503 and the outer surface of the extrusion block 502. The plurality of springs 504 are respectively sleeved on the outside of the plurality of guide columns 501, and the left end of the solid shaft 404 is fixedly connected to a scraper 406.

[0026] The filter element 502 is a filter element which is used to filter the filter element 3. The filter element 502 is a filter element which is used to filter the filter element 3. The filter element 502 is a filter element which is used to filter the filter element 3.

[0027] Embodiment 3: Figure 1-Figure 8As shown, the first extrusion mechanism 2 includes four mounting plates 201, two extrusion rollers 209 and two cylinders 213. The four mounting plates 201 are respectively fixedly connected to the outer surfaces of both sides of the feed hopper 1 near the edges, wherein the front surfaces of two mounting plates 201 are rotatably connected to the first rotating shaft 202, and the rear surfaces of the other two mounting plates 201 are rotatably connected to the second rotating shaft 203, a sliding rod 205 is fixedly connected between the end surfaces of the first rotating shaft 202 and the second rotating shaft 203, a first bevel gear 204 is fixedly connected to the outer surface of the second rotating shaft 203, a second bevel gear 206 is slidably connected to the outer surface of the sliding rod 205, and an L-shaped bracket 207 is rotatably connected to the front surface of the second bevel gear 206, and a first motor 208 is installed on the rear surface of one of the mounting plates 201, and the output end of the first motor 208 rotates through the mounting plate 201. The outer surface of the first motor 208 extends to the other side, the output end of the first motor 208 is fixedly connected to the outer surface of one of the first rotating shafts 202, the two cylinders 213 are respectively installed between the inner surface walls of the two movable grooves 12, the telescopic ends of the cylinders 213 are fixedly connected with sliding seats 212, the sliding seats 212 are slidably embedded between the inner surface walls of the movable grooves 12, the outer surface of the sliding seat 212 and the outer surface of the L-shaped bracket 207 are fixedly connected, the two ends of the two squeezing rollers 209 are welded with steel shafts 210, the ends of the steel shafts 210 are connected with third bevel gears 211, wherein the two third bevel gears 211 are respectively meshed with the two first bevel gears 204, and the other two third bevel gears 211 are respectively meshed with the two second bevel gears 206, wherein the two steel shafts 210 rotate and penetrate the corresponding sliding seats 212 and the outer surfaces of the L-shaped bracket 207.

[0028] In this embodiment, during the process of the tail water of the seawater aquaculture being discharged into the inside of the feed hopper 1, under the action of the guide plate 11, the tail water will pass between the two squeezing rollers 209. At this time, the first motor 208 is started to drive the first rotating shaft 202 to rotate, and the first rotating shaft 202 will synchronously drive the sliding rod 205 and the second rotating shaft 203 to rotate synchronously. At this time, the first bevel gear 204 on the surface of the second rotating shaft 203 and the second bevel gear 206 in the opposite direction on the sliding rod 205 will synchronously drive the adjacent third bevel gear 211 to rotate in the opposite direction, thereby driving the two squeezing rollers 209 to squeeze the tail water passing through, and then the tail water can be preliminarily separated into solid and liquid, which is convenient for subsequent processing efficiency. In addition, according to different seawater aquaculture farm environments and other factors, the volume of impurities contained in the tail water is different, and the cylinders 213 in the two movable grooves 12 can be started to pull the two sliding seats 212 to move backward, thereby achieving the effect of pulling the rear squeezing roller 209 away from the front squeezing roller 209. At this time, the sliding seat 212 It will drive the L-shaped bracket 207 to move synchronously, and the L-shaped bracket 207 will drive the second bevel gear 206 to slide synchronously on the surface of the sliding rod 205, and the second bevel gear 206 and the third bevel gear 211 are always in a meshing state during the process, so that it can be suitable for solid-liquid separation of tail water in different seawater aquaculture farms. It is not only practical in function, but also has a high degree of automation and does not require manual repeated adjustment. The L-shaped bracket 207 and the second bevel gear 206 are rotatably connected through a circular sleeve and a bearing, and the second bevel gear 206 and the sliding rod 205 are slidably connected through an irregular rod body and a hole. When the sliding rod 205 rotates, it can drive the second bevel gear 206 to rotate synchronously, and the second bevel gear 206 can move back and forth on the surface of the sliding rod 205. The power required by the first rotating shaft 202 and other structures on the other side is transmitted by the squeezing roller 209. The bilaterally symmetrical structure is mainly used to ensure the stability of the squeezing roller 209 during movement and operation.

[0029] The effect and working principle of the whole mechanism are as follows: when in use, the tail water of seawater aquaculture is pumped out by a water pump and discharged into the feed hopper 1. Under the action of gravity, the tail water will enter the filter shell 3 below through the feed hopper 1. At this time, the liquid in the tail water will be discharged and recovered from the device through the water filter holes 33 on the surface of the filter shell 3, while the solid impurities will be retained in the filter shell 3. Then the second motor 603 is started. When the second motor 603 is started, it will drive the first small gear 604 and the first large gear 605 to rotate at the same time. After the first small gear 604 rotates, it will drive the second large gear 606 to rotate slowly. When the first large gear 605 rotates, it will drive the second small gear 608 to rotate quickly. At this time, the air connected to the second small gear 608 The spindle 401 will rotate rapidly, while the solid shaft 404 connected to the second large gear 606 through the connecting shaft 607 will rotate slowly. In this process, since the feed hopper 1 is located on the upper right side of the filter shell 3, the tail water impurities just discharged into the filter shell 3 are not squeezed and are relatively loose as a whole. Therefore, the hollow shaft 401 drives the crushing blades 403 to rotate at a high speed to break up the impurities, so that the water and solid can be completely separated. The first auger blade 402 near the rear side will gradually push the solid impurities to the left side during the rapid rotation. The impurities will pass through the crushing blade 403 during the pushing process to complete the breaking operation, and the impurities near the right side will gradually be pushed into the area where the second auger blade 405 is located. Therefore, the solid shaft 404 slowly drives During the rotation of the second auger blade 405, the treated tail water and impurities will be transported to the left and squeezed, and then the water contained in the interior will be fully squeezed out and discharged through the water filter hole 33 for collection. This design can effectively avoid the problem that the internal water of the hard impurities formed by aggregation is not only difficult to squeeze out but also easy to damage the auger blade. The practicality and solid-liquid separation effect are effectively improved. When the water in the impurities is squeezed out, it will be gradually transported to the left. When the impurities are transported to the leftmost end, an extrusion force will be generated on the extrusion block 502. At this time, the extrusion block 502 will squeeze the spring 504 to contract and begin to move away from the filter shell 3. The right surface of the extrusion block 502 is inclined, so the gap between the extrusion block 502 and the filter shell 3 has a larger opening below, which is convenient for solid entry. During the discharge process, the solid shaft 404 will drive the scraper 406 to rotate slowly. During the rotation of the scraper 406, the squeezed solid impurities can be scraped and crushed to be discharged stably. The overall structure is simple, the reliability of use is high, and the cost is low. In addition, during the process of the tail water of the seawater aquaculture being discharged into the inside of the feed hopper 1, under the action of the guide plate 11, the tail water will pass between the two squeezing rollers 209. At this time, the first motor 208 is started to drive the first rotating shaft 202 to rotate, and the first rotating shaft 202 will synchronously drive the sliding rod 205 and the second rotating shaft 203 to rotate synchronously. At this time, the first bevel gear 204 on the surface of the second rotating shaft 203 and the second bevel gear 206 on the sliding rod 205 in opposite directions will synchronously drive the adjacent third bevel gear 211 to rotate in the opposite direction.Then the two squeezing rollers 209 are driven to squeeze the tail water passing through, and then the tail water can be preliminarily separated into solid and liquid, which is convenient for the subsequent processing efficiency. According to different factors such as the environment of the seawater aquaculture farm, the volume of impurities contained in the tail water is different. The cylinders 213 in the two movable grooves 12 can be started to pull the two sliding seats 212 to move backward, so as to achieve the effect of pulling the rear squeezing roller 209 away from the front squeezing roller 209. At this time, the sliding seat 212 will drive the L-shaped bracket 207 to move synchronously, and the L-shaped bracket 207 will drive the second bevel gear 206 to slide synchronously on the surface of the sliding rod 205, and the second bevel gear 206 and the third bevel gear 211 are always in a meshing state during the process, so that it can be applied to the solid-liquid separation of tail water in different seawater aquaculture farms. It is not only practical in function, but also has a high degree of automation, and does not require manual repeated adjustment.

[0030] Among them, the first motor 208, the cylinder 213 and the second motor 603 are all existing technologies, and their components and operating principles are all public technologies, which will not be explained in detail here.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid-liquid separation device for seawater aquaculture tail water, comprising a feed hopper (1), characterized in that: The bottom of the feed hopper (1) is fixedly connected to a filter shell (3); a first extrusion mechanism (2) is arranged inside the feed hopper (1); a second extrusion mechanism (4) is arranged inside the filter shell (3); a power mechanism (6) is arranged on the right side of the filter shell (3); and a pressure mechanism (5) is arranged on the left side of the filter shell (3); The second extrusion mechanism (4) comprises a hollow shaft (401), the interior of the hollow shaft (401) being rotatably connected to a solid shaft (404), the length of the solid shaft (404) being greater than the length of the hollow shaft (401), the outer surface of the hollow shaft (401) being connected to a first auger blade (402) at a position close to the right side, the outer surface of the hollow shaft (401) being connected to a crushing blade (403) at a position close to the left side, the outer surface of the solid shaft (404) being connected to a second auger blade (405) at a position located on the left side of the hollow shaft (401), and the first auger blade (402) and the crushing blade (403) being located below the feed hopper (1).

2. The solid-liquid separation device for seawater aquaculture tail water according to claim 1, characterized in that: The outer surfaces of both sides of the feed hopper (1) are provided with movable grooves (12), the inner surface walls on the front and rear sides of the feed hopper (1) are fixedly connected to guide plates (11), the bottom of the filter shell (3) is provided with a plurality of water filtering holes (33), the inner bottom of the filter shell (3) is arranged in an arc shape, a top cover (31) is fixedly connected between the inner surface walls of the filter shell (3) near the left side, and the outside of the filter shell (3) is fixedly connected to a gathering shell (32), and the upper and lower parts of the gathering shell (32) are both open.

3. The solid-liquid separation device for seawater aquaculture tail water according to claim 2, characterized in that: The power mechanism (6) comprises a cover plate (601), the cover plate (601) being fixedly connected to the right surface of the filter housing (3), a mounting frame (602) being fixedly connected to the right surface of the cover plate (601) near the upper portion, a second motor (603) being mounted on the right surface of the mounting frame (602), an output end of the second motor (603) rotatingly passing through the right surface of the mounting frame (602) and extending to the left side.

4. The solid-liquid separation device for seawater aquaculture tail water according to claim 3, characterized in that: The output end of the second motor (603) is fixedly connected to a first small gear (604), the left surface of the first small gear (604) is fixedly connected to a first large gear (605), the outer surface of the first small gear (604) is meshingly connected to a second large gear (606), and the outer surface of the first large gear (605) is meshingly connected to a second small gear (608).

5. The solid-liquid separation device for seawater aquaculture tail water according to claim 4, characterized in that: A connecting shaft (607) is fixedly connected to the center of the left surface of the second large gear (606); the outer surface of the connecting shaft (607) rotates and passes through the outer surface of the second small gear (608); the second small gear (608) and the second large gear (606) are arranged in concentric circles; the left surface of the second small gear (608) is fixedly connected to the right end of the hollow shaft (401); and the left end of the connecting shaft (607) is fixedly connected to the right end of the solid shaft (404).

6. The solid-liquid separation device for seawater aquaculture tail water according to claim 5, characterized in that: The pressure mechanism (5) comprises a plurality of guide columns (501), the outer surfaces of the plurality of guide columns (501) are slidably connected with an extrusion block (502), the right surface of the extrusion block (502) is arranged in an inclined manner, the left end of the guide column (501) is fixedly connected with a limit block (503), a plurality of springs (504) are connected between the limit block (503) and the outer surface of the extrusion block (502), and the plurality of springs (504) are respectively sleeved on the outside of the plurality of guide columns (501), and the left end of the solid shaft (404) is fixedly connected with a scraper (406).

7. The solid-liquid separation device for seawater aquaculture tail water according to claim 6, characterized in that: The first extrusion mechanism (2) comprises four mounting plates (201), two extrusion rollers (209) and two cylinders (213); the four mounting plates (201) are respectively fixedly connected to positions near the edges of the outer surfaces of both sides of the feed hopper (1); the front surfaces of two of the mounting plates (201) are rotatably connected to a first rotating shaft (202); the rear surfaces of the other two mounting plates (201) are rotatably connected to a second rotating shaft (203); and a sliding rod (205) is fixedly connected between the end surfaces of the first rotating shaft (202) and the second rotating shaft (203).

8. The solid-liquid separation device for seawater aquaculture tail water according to claim 7, characterized in that: The outer surface of the second rotating shaft (203) is fixedly connected to the first bevel gear (204), the outer surface of the sliding rod (205) is slidably connected to the second bevel gear (206), the front surface of the second bevel gear (206) is rotatably connected to the L-shaped bracket (207), a first motor (208) is mounted on the rear surface of one of the mounting plates (201), the output end of the first motor (208) rotates through the outer surface of the mounting plate (201) and extends to the other side, and the output end of the first motor (208) is fixedly connected to the outer surface of one of the first rotating shafts (202).

9. The solid-liquid separation device for seawater aquaculture tail water according to claim 8, characterized in that: The two cylinders (213) are respectively installed between the inner surface walls of the two movable grooves (12); the telescopic ends of the cylinders (213) are fixedly connected to sliding seats (212); the sliding seats (212) are slidably embedded between the inner surface walls of the movable grooves (12); and the outer surface of the sliding seat (212) is fixedly connected to the outer surface of the L-shaped bracket (207).

10. The solid-liquid separation device for seawater aquaculture tail water according to claim 9, characterized in that: Steel shafts (210) are welded at both ends of the two squeezing rollers (209), and the ends of the steel shafts (210) are connected to third bevel gears (211), wherein two of the third bevel gears (211) are respectively meshed and connected with the two first bevel gears (204), and the other two third bevel gears (211) are respectively meshed and connected with the two second bevel gears (206), wherein the two steel shafts (210) are rotated to penetrate the outer surfaces of the corresponding sliding seats (212) and the L-shaped bracket (207).

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