Wastewater treatment device for seaweed meal production

Abstract

The invention discloses a waste water treatment device for seaweed powder production, and relates to the technical field of water pollution, the waste water treatment device comprises a coagulation bin, a flocculation bin and an air floatation bin which are sequentially arranged in a stepped manner, a coagulation stirring mechanism for stirring and mixing a coagulant and seaweed waste water is arranged in the coagulation bin, and the flocculation bin is arranged in the air floatation bin. A flocculation stirring mechanism for stirring and mixing a flocculating agent and seaweed wastewater is arranged in the flocculation bin, and the wastewater is subjected to coagulation and flocculation treatment respectively through a conical stirring blade which rotates quickly and a stirring plate which moves slowly, so that the coagulant and the flocculating agent are fully mixed with the wastewater, and the flocculation effect is improved. The conditions that the stirring of the wastewater and the coagulant is too slow and the stirring of the wastewater and the flocculant is too fast during coagulation work are avoided, organic matters and impurities in the wastewater can be effectively treated, and the organic matters, particle colloid impurities and the like in the seaweed wastewater are fully separated; the condition of water pollution to a water body during subsequent discharge of the seaweed wastewater is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pollution, and particularly relates to a wastewater treatment device for seaweed powder production. BACKGROUND

[0002] Seaweed powder is a powder product made of seaweed as raw material through cleaning, drying, grinding and other processes, rich in various nutrients, and widely used in food, feed and other industries. In the production process, cleaning seaweed raw material is a key step, which aims to remove impurities such as silt to ensure the cleanliness of subsequent seaweed processing.

[0003] However, a large amount of wastewater containing high-concentration organic pollutants is generated during the cleaning process of seaweed, and the wastewater also contains excessive nutrients such as nitrogen and phosphorus. If directly discharged, it will cause eutrophication of the receiving water body (such as rivers and lakes), causing vicious proliferation of algae and plankton, and destroying the ecological balance of the water body. Therefore, the seaweed wastewater after cleaning needs to be treated.

[0004] At present, the mainstream treatment process of seaweed wastewater in the prior art follows the process of pretreatment-anaerobic treatment-oxygenation treatment-depth treatment. The pretreatment process is one of the core links. This process can treat a large amount of organic matter (such as carbohydrates, proteins, amino acids, etc.) and small colloidal particles that are difficult to naturally settle in wastewater by combining chemical treatment (for example, adding coagulant and flocculant) and physical treatment (for example, air floatation machine). However, when coagulating and flocculating seaweed wastewater, the coagulant and flocculant are usually mixed with seaweed wastewater by stirring equipment. If the stirring is too slow during the coagulation stage, the coagulant and wastewater will mix slowly, which will prevent the small colloidal particles from quickly destabilizing and coagulating. At this time, if the flocculant is added, the flocculant cannot effectively play a role due to the lack of stable coagulation basis of colloidal particles, and it is difficult to form large and dense flocs, thereby seriously affecting the coagulation effect and even hindering the smooth progress of the subsequent treatment steps. In addition, if the stirring speed is too slow or too fast during the flocculation stage, the flocs are slow to form and have loose structures. If the stirring speed is too fast, it will generate strong shear force, which will easily tear and disperse the fragile flocs, causing them to dissolve in water again and destroy the existing flocculation results. Therefore, the present application provides a wastewater treatment device for seaweed powder production. SUMMARY

[0005] In order to solve the problem that the stirring equipment mixes the coagulant and flocculant with seaweed wastewater with reduced effect during the coagulation and flocculation of seaweed wastewater, the present application adopts the following technical scheme: The utility model provides a kind of seaweed powder production wastewater treatment device, including coagulation bin, flocculation bin and air floatation bin, and three are ladder type setting in turn, the inside of the coagulation bin is provided with the coagulation stirring mechanism for mixing and stirring coagulant and seaweed wastewater, the inside of the flocculation bin is provided with the flocculation stirring mechanism for mixing and stirring flocculating agent and seaweed wastewater; The coagulation stirring mechanism includes driving shaft and driven shaft that can rotate quickly and slowly respectively, the surface of the driving shaft is provided with conical stirring blade, a plurality of spring friction plates are frictionally connected to one end of the driving shaft, a fixed sleeve is provided on the outside of the spring friction plate, a fixed cylinder is fixedly connected to the outside of the fixed sleeve, and the fixed cylinder is fixedly connected to the driven shaft at one end. The flocculation stirring mechanism includes a rotating push disc fixedly connected to the surface of the driven shaft, an upper push rod is in sliding contact with one side of the rotating push disc, a moving column is rotatably connected to one end of the upper push rod, a sliding sleeve is fixedly connected below the moving column, a rotating column is rotatably connected below the sliding sleeve, and a stirring plate is fixedly connected below the rotating column.

[0006] Preferably, the coagulation stirring mechanism further includes an electric motor fixedly connected to one side of the coagulation bin, the driving shaft is fixedly connected to the output end of the electric motor, an outer cylinder is rotatably connected to the surface of the driving shaft, the fixed cylinder is rotatably connected to the outer cylinder, sealing washers are provided at both ends of the outer cylinder, a cylindrical cam is fixedly connected to the surface of the driven shaft, a helical groove is formed in the surface of the cylindrical cam, and the outer cylinder is fixedly connected to the coagulation bin.

[0007] Preferably, the flocculation stirring mechanism further includes a lower push rod in sliding contact with the rotating push disc, the lower push rod is movably connected to the rotating column through a hinged ball, baffles are provided on both sides of the sliding direction of the surface of the driven shaft, and the baffles are fixedly connected to the driven shaft.

[0008] Preferably, a scraper is provided below the stirring plate for scraping the bottom of the flocculation bin, a driving gear is fixedly connected below the stirring plate, a driven gear is meshingly connected to one side of the driving gear, and the driven gear is fixedly connected to the scraper below.

[0009] Preferably, an extrusion spring is provided at the connection position of the spring friction plate and the fixed sleeve, a discharge port is formed in the side of the coagulation bin close to the inside of the flocculation bin and the side of the flocculation bin close to the inside of the air floatation bin, and an electric valve is provided in the inside of the discharge port.

[0010] Preferably, an auxiliary mechanism is further provided in the inside of the coagulation bin for assisting the conical stirring blade to work, the auxiliary mechanism includes a pair of push plates sliding in the inside of the coagulation bin, the push plates are arc-shaped at both ends and have a through slot formed in the bottom, and a first limiting rod is movably connected to one side of the push plate through a hinged ball.

[0011] Preferably, the auxiliary mechanism further comprises a sliding rod in sliding contact with the spiral groove of the cylindrical cam surface, a driving rod is fixedly connected above the sliding rod, a pair of swing connecting rods are rotatably connected above the driving rod through a pin shaft, a connecting rod is rotatably connected below one end of the swing connecting rod, and the connecting rod is in sliding connection with a push plate through a sliding block.

[0012] Preferably, a second limiting rod is arranged at the position of the push plate close to the cylindrical cam, the second limiting rod is in sliding connection with the coagulation tank, a sealing washer is arranged at the sliding position, and the driving rod is in sliding connection with the coagulation tank.

[0013] Preferably, a pair of gas tanks are arranged on the two sides of the air float tank, a gas pipe is fixedly connected below the gas tank and penetrates through the air float tank, a one-way valve is arranged in the gas pipe, a scraping mechanism for scraping the large-particle colloidal impurities floating in the wastewater is arranged in the air float tank, a driving mechanism for driving the scraping mechanism to operate is further arranged in the air float tank, and a collection tank for collecting the impurities is further arranged in the air float tank.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. The wastewater is subjected to coagulation and flocculation treatment by the fast-rotating conical stirring blade and the slowly-moving stirring plate, respectively, so that the coagulant and the flocculant are fully mixed with the wastewater, the conditions of slow stirring of the wastewater and the coagulant during coagulation and fast stirring of the wastewater and the flocculant are avoided, the organic matter and the colloidal impurities in the seaweed wastewater are effectively separated, the efficiency and effect of the wastewater treatment are improved, and the water pollution caused by the subsequent discharge of the seaweed wastewater is avoided.

[0015] 2. The alternating reciprocating movement of the upward push rod and the downward push rod can effectively avoid tearing and damaging the adhesion effect between the flocs during the stirring process while the stirring plate slowly stirs and mixes the wastewater and the flocculant in the flocculation tank, and the stirring effect of the stirring plate on the mixture of the wastewater and the flocculant is further improved by the movement of the scraper below the stirring plate, thereby improving the cleaning effect of the organic matter and the colloidal impurities in the wastewater.

[0016] 3. The movement of the push plate that can reciprocate and slightly rotate in the coagulation tank can effectively push the wastewater and the coagulant to the fast-rotating conical stirring blade while also stirring the wastewater to a certain extent, thereby effectively improving the efficiency of the chemical reaction between the coagulant and the wastewater and the efficiency of the overall equipment for treating the wastewater. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1It is a schematic diagram of the external overall structure of the present application; Figure 2 It is a schematic diagram of the internal overall structure of the present application; Figure 3 It is a schematic diagram of the structure of the coagulation stirring mechanism of the present application; Figure 4 It is an exploded view of the local parts of the coagulation stirring mechanism of the present application; Figure 5 It is a schematic diagram of the structure of the auxiliary mechanism of the present application; Figure 6 It is a schematic diagram of the motion state of the auxiliary mechanism of the present application Figure 5 Figure 7 It is a schematic diagram of the structure of the flocculation stirring mechanism of the present application; Figure 8 It is a schematic diagram of the structure of the up push rod and the down push rod of the present application; Figure 9 It is a schematic diagram of the structure of the driving gear and the driven gear of the present application; Figure 10 It is a schematic diagram of the structure of the scraping mechanism and the driving mechanism of the present application; Figure 11 It is a schematic diagram of the structure of the gas tank and the air pipe of the present application.

[0018] In the drawings, the components represented by each reference numeral are listed as follows: 1, coagulation bin; 2, flocculation bin; 3, air flotation bin; 4, gas tank; 5, coagulation stirring mechanism; 501, motor; 502, driving shaft; 503, driven shaft; 504, conical stirring blade; 505, cylindrical cam; 506, outer cylinder; 507, fixed sleeve; 508, spring friction plate; 509, fixed cylinder; 6, auxiliary mechanism; 601, sliding rod; 602, driving rod; 603, swing connecting rod; 604, push plate; 605, connecting rod; 606, first limiting rod; 607, second limiting rod; 7, flocculation stirring mechanism; 701, rotating push disc; 702, up push rod; 703, moving column; 704, sliding sleeve; 705, down push rod; 706, rotating column; 707, stirring plate; 708, scraper; 709, driving gear; 710, driven gear; 8, electric valve; 9, scraping mechanism; 10, driving mechanism; 11, air pipe; 12, collection bin. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.​

[0020] Embodiment one: reference Figures 1 to 7 The application discloses a seaweed powder production wastewater treatment device which comprises a coagulation bin 1, a flocculation bin 2 and an air flotation bin 3, and the three bins are arranged in a ladder form in sequence. The coagulation bin 1 is internally provided with a coagulation stirring mechanism 5 for stirring and mixing coagulant and seaweed wastewater, and the flocculation bin 2 is internally provided with a flocculation stirring mechanism 7 for stirring and mixing flocculant and seaweed wastewater. The coagulation stirring mechanism 5 comprises a driving shaft 502 and a driven shaft 503 which can rotate quickly and slowly respectively. The surface of the driving shaft 502 is provided with a conical stirring blade 504. A plurality of spring friction plates 508 are frictionally connected to one end of the driving shaft 502. A fixed sleeve 507 is arranged on the outer side of the spring friction plate 508. A fixed cylinder 509 is fixedly connected to the outer side of the fixed sleeve 507. One end of the fixed cylinder 509 is fixedly connected to the driven shaft 503. The flocculation stirring mechanism 7 comprises a rotating push disc 701 which is fixedly connected to the surface of the driven shaft 503. An upper push rod 702 is in sliding contact with one side of the rotating push disc 701. A moving column 703 is rotatably connected to one end of the upper push rod 702. A sliding sleeve 704 is fixedly connected to the lower side of the moving column 703. A rotating column 706 is rotatably connected to the lower side of the sliding sleeve 704. A stirring plate 707 is fixedly connected to the lower side of the rotating column 706.

[0021] When the seaweed wastewater generated during the seaweed cleaning before the production of seaweed powder needs to be treated, the seaweed wastewater which has been filtered to remove large-particle impurities is first injected into the coagulation bin 1. At this time, the driving shaft 502 is driven to rotate to drive the conical stirring blade 504 to rotate. At the same time, coagulant is added into the coagulation bin 1. At this time, the conical stirring blade 504 can stir and mix the seaweed wastewater and the coagulant. Since the seaweed wastewater contains a large amount of organic matters and colloidal particles, the stirring of the coagulant and the seaweed wastewater can effectively make the colloidal particles tend to be in a state of instability in water, so that the colloidal particles can be easily formed into large-particle flocs in the subsequent process. The organic matters and other impurities in the seaweed wastewater can be treated, so that the water pollution caused by the subsequent wastewater discharge can be avoided. And, when the conical stirring blade 504 rotates quickly and completes the mixing of seaweed wastewater and coagulant, at this time the organic matter and fine colloidal particles in the seaweed wastewater have tended to be destabilized (referring to destroying the stability of fine colloidal particles, so that they are better for subsequent adhesion to form large particle flocs), at this time the seaweed wastewater after mixing the coagulant is discharged to the inside of the flocculation bin 2, and when the main shaft 502 rotates, the conical surface close to the driven shaft 503 side will rub the multiple spring friction plates 508 to generate friction transmission, at this time the main shaft 502 drives the spring friction plate 508 to rotate through friction transmission, the rotation of the spring friction plate 508 will drive the outer fixed sleeve 507 to rotate synchronously, the rotation of the fixed sleeve 507 will drive the outer fixedly connected fixed cylinder 509 to rotate synchronously, the rotation of the fixed cylinder 509 will drive the driven shaft 503 to rotate synchronously, the rotation of the driven shaft 503 will drive the rotating push plate 701 to rotate, since the rotating push plate 701 is arranged in an inclined state outside the driven shaft 503, when it rotates it will push the moving column 703 at one end of the push rod 702 to reciprocate through the inclined surface, the movement of the moving column 703 will drive the sliding sleeve 704 below to reciprocate on the surface of the driven shaft 503, at this time the sliding sleeve 704 will drive the stirring plate 707 to reciprocate horizontally inside the flocculation bin 2 through the rotation column 706 connected below to rotate, which can push and stir the seaweed wastewater after mixing the coagulant in the flocculation bin 2, and in the movement process of the stirring plate 707, a certain amount of flocculating agent is put into the inside of the flocculation bin 2, so that the fine colloidal particles in the wastewater adhere together to form large particle flocs, which is convenient for subsequent separation of the flocs from the wastewater; It should be noted that, since the driving shaft 502 is tapered at one end close to the driven shaft 503, and the plurality of spring friction plates 508 are in contact with the tapered surface in an inclined state, when the driving shaft 502 rotates, it will drive the driven shaft 503 to rotate through tapered friction transmission, so that the driven shaft 503 drives the stirring plate 707 to move inside the flocculation bin 2, and in the initial state, if the driving shaft 502 directly drives the driven shaft 503 to rotate through the spring friction plate 508, the driven shaft 503 will rotate synchronously with the driving shaft 502, because the surface of the driven shaft 503 is provided with rotating push plate 701 and moving column 703 and other parts, at this time, when the driving shaft 502 drives the driven shaft 503 to rotate, it will cause the contact force between the spring friction plate 508 and the driving shaft 502 to "slip", so that the rotation speed of the driven shaft 503 is lower than that of the driving shaft 502, which can fully meet the requirements of the rapid rotation of the tapered stirring blade 504 for mixing the coagulant and seaweed wastewater, so that the coagulant contacts with the organic matter and particulate colloidal impurities in the wastewater, and a chemical reaction is quickly generated, so that the state tends to be destabilized, and the stirring plate 707 slowly moves to stir and mix the flocculant and wastewater, which can not only make the destabilized particulate colloidal impurities gradually stick together to form large particle-shaped flocs, but also avoid the stirring plate 707 tearing the large particle-shaped flocs during stirring and mixing, so as to effectively improve the flocculation effect and facilitate subsequent separation work. It should be noted that, by arranging the two sides of the stirring plate 707 in an arc shape and opening a flow guide groove in the middle of the arc, when the stirring plate 707 stirs and mixes the flocculant and wastewater, the stirring plate 707 can push the wastewater to move back and forth inside the flocculation bin 2, and the flow guide groove opened on both sides of the stirring plate 707 can mix and guide the wastewater and flocculant being pushed, so as to fully stir and mix the flocculant and wastewater, and when the stirring plate 707 slowly moves to push the wastewater inside the flocculation bin 2, since the two ends of the stirring plate 707 are close to the inside of the flocculation bin 2, the stirring plate 707 can not only push the wastewater, but also can roll up the wastewater on both sides, so that the wastewater and the flocculant are fully mixed, and since the moving speed of the stirring plate 707 is relatively slow, it can effectively avoid tearing the large particle-shaped flocs, so as to effectively improve the flocculation effect.

[0022] Referring to Figures 2 to 4The coagulation stirring mechanism 5 further comprises an electric motor 501 fixedly connected to one side of the coagulation bin 1, a driving shaft 502 fixedly connected to an output end of the electric motor 501, an outer cylinder 506 rotatably connected to a surface of the driving shaft 502, a fixed cylinder 509 rotatably connected to the outer cylinder 506, sealing washers arranged at two ends of the outer cylinder 506, and a driven shaft 503 having a cylindrical cam 505 fixedly connected to a surface thereof and provided with a helical groove in the surface.

[0023] During work, when the seaweed wastewater and the coagulant need to be stirred, the electric motor 501 is started to rotate the driving shaft 502, which can drive the conical stirring blade 504 to stir and mix the wastewater and the added coagulant in the coagulation bin 1. At this time, the driving shaft 502 rotates rapidly to drive the conical stirring blade 504 to rotate, which can fully mix the wastewater and the coagulant and rapidly cause a chemical reaction between the coagulant and the wastewater, thereby effectively improving the stirring and mixing effect and the coagulation effect. It should be noted that the outer cylinder 506 is arranged outside the driving shaft 502 and the driven shaft 503, and when the driving shaft 502 drives the driven shaft 503 to rotate, the fixed cylinder 509 at one end of the driven shaft 503 rotates in the outer cylinder 506, so that the driven shaft 503 can stably drive the rotating push plate 701 to rotate, thereby improving the stability of the driven shaft 503 during rotation. In addition, the sealing washers are arranged at two ends of the outer cylinder 506, which can prevent the wastewater from entering the inside of the outer cylinder 506 during stirring and mixing, thereby protecting the driving shaft 502 and the driven shaft 503 from normal rotation.

[0024] With reference to Figures 7 to 9 The flocculation stirring mechanism 7 further comprises a lower push rod 705 in sliding contact with the rotating push plate 701, one end of the lower push rod 705 being movably connected to the rotating column 706 through a hinged ball, and the sliding sleeve 704 being provided with baffles on both sides of the sliding direction of the surface of the driven shaft 503, the baffles being fixedly connected to the driven shaft 503.

[0025] When the driven shaft 503 rotates slowly to drive the rotating push disc 701 to rotate, the rotating push disc 701 pushes the upper push rod 702 to reciprocate through the inclined surface and also drives the lower push rod 705 to move. At this time, the upper push rod 702 can push the sliding sleeve 704 to slide on the surface of the driven shaft 503 through the moving column 703, and at this time, the reciprocating movement of the lower push rod 705 can exert a squeezing force on the rotating column 706 through the hinged ball. Since the rotating column 706 is rotationally connected with the sliding sleeve 704, and the position of the lower push rod 705 is set on one side of the axis of the driven shaft 503, it is in an inclined state with the driven shaft 503 in space. At this time, when the lower push rod 705 pushes the rotating column 706 through the hinged ball, it will make the rotating column 706 rotate slightly by ±10°. At this time, the stirring plate 707 below the rotating column 706 will also rotate, which can realize that the stirring plate 707 can rotate slightly while reciprocating, so that the stirring plate 707 can better push the wastewater and flocculants, further improve the effect of the stirring plate 707 on the wastewater, and improve the effect of wastewater flocculation. It should be noted that, due to the different positions of the upper push rod 702 and the lower push rod 705 on one side of the rotating push disc 701 Figure 7 For example, the right side is the position of the fixed cylinder 509, and the left side is the position of the rotating push disc 701. When the rotating push disc 701 pushes the upper push rod 702 to push the moving column 703 below the sliding sleeve 704 to move, the lower push rod 705 will always be in contact with the surface of the rotating push disc 701 at this time, so it is pulled to the left. At this time, one end of the upper push rod 702 will pull the rotating column 706 to the left through the hinged ball. At this time, the rotating column 706 will rotate clockwise by 10° below the sliding sleeve 704. The rotation of the rotating column 706 will drive the stirring plate 707 below to rotate clockwise by 10°, which can make the stirring plate 707 rotate clockwise by 10° while moving to the right, and can fully mix the wastewater and flocculants, improve the effect of wastewater flocculation, and when the rotating push disc 701 pulls the upper push rod 702 to move to the left, the stirring plate 707 will rotate counterclockwise at this time, so as to fully roll up the wastewater and coagulant, which can effectively make the wastewater flow in the inside of the flocculation bin 2, improve the effect of wastewater flocculation. It should be explained that when the stirring plate 707 reciprocates in the inside of the flocculation bin 2, and moves by ±10° of the rotation angle during the reciprocating movement, the wastewater will generate vortex during the rotation of the stirring plate 707 when the stirring plate 707 mixes the wastewater and the flocculants. On the one hand, it can improve the mixing effect between the flocculants and the wastewater, and on the other hand, since the two ends of the stirring plate 707 are arranged in a Y shape, even after the wastewater generates vortex, it can also avoid that the flow rate of the wastewater being rolled up is too large. The two ends of the stirring plate 707 can block it to a certain extent, so that the wastewater can be effectively pushed by the movement of the stirring plate 707, thereby improving the mixing effect of the wastewater and the flocculants.

[0026] With reference to Figures 7 to 9 The lower portion of the stirring plate 707 is provided with a scraper 708 for scraping the bottom of the flocculation bin 2. The lower portion of the stirring plate 707 is fixedly connected with a driving gear 709. The side of the driving gear 709 is engagedly connected with a driven gear 710. The lower portion of the driven gear 710 is fixedly connected with the scraper 708.

[0027] In operation, when the stirring plate 707 reciprocates in the flocculation bin 2 to push and mix the wastewater and the flocculant, the stirring plate 707 also drives the scraper 708 to move synchronously. Since the bottom of the scraper 708 is in contact with the bottom of the flocculation bin 2, the scraper 708 can scrape the bottom of the flocculation bin 2 when it moves, so that the flocculant that has been poured into the flocculation bin 2 can be pushed up again with the wastewater, and the flocculation bin 2 can also avoid that the flocculation bin 2 is settled on the bottom. At this time, the scraper 708 can also push the wastewater up when it pushes the wastewater, so that the stirring plate 707 can push and mix the wastewater and the flocculant in all directions, thereby improving the mixing effect. In addition, since the scraper 708 is arranged in a semicircular arc shape, the scraper 708 can push the wastewater to a certain extent in cooperation with the stirring plate 707 when it moves. At this time, the stirring plate 707 also rotates when it moves. The rotation of the stirring plate 707 drives the driving gear 709 to rotate. The rotation of the driving gear 709 drives the driven gear 710 to rotate in a meshing transmission mode. At this time, the rotation of the driven gear 710 can drive the scraper 708 that is moving with the stirring plate 707 to rotate. Since the driving gear 709 and the driven gear 710 are arranged in a meshing mode, if the stirring plate 707 rotates 10° clockwise, the scraper 708 below it will rotate counterclockwise, which is opposite to the rotation direction of the stirring plate 707. When the scraper 708 pushes the flocculation bin 2 at this time, it can cooperate with the vortex generated when the stirring plate 707 pushes the wastewater, so that the scraper 708 can stably push the flocculation bin 2 from the bottom of the flocculation bin 2 to the top. Subsequently, the stirring plate 707 continues to move in the water under the pushing of the stirring plate 707, and the gas flocculation continues to adhere, which can effectively improve the flocculation effect. It should be noted that since the bottom surface of the scraper 708 is in contact with the bottom of the flocculation bin 2, and the bottom of the flocculation bin 2 is arranged in an inclined manner, the scraper 708 will also intermittently contact the inclined surface of the bottom of the flocculation bin 2 when it slightly rotates during movement. Therefore, the wastewater pushed by the scraper 708 will not move in a fully upward movement state, which can effectively push the wastewater to flow upward, so that the stirring plate 707 can better push the wastewater and the flocculation bin 2, and can effectively avoid the situation that the flocculation bin 2 is dispersed by the movement and rotation of the stirring plate 707.

[0028] With reference to Figures 1 to 2The connecting position of the spring friction plate 508 and the fixed sleeve 507 is provided with an extrusion spring, the inside of the discharge port of the coagulation bin 1 close to the inside of the flocculation bin 2 and the inside of the flocculation bin 2 close to the inside of the air flotation bin 3 is provided with an electric valve 8.

[0029] When the driving shaft 502 rotates to drive the fixed sleeve 507 outside the spring friction plate 508 through the conical friction transmission, the rotation speed of the driven shaft 503 is lower than that of the driving shaft 502 because the surface of the driven shaft 503 is provided with a plurality of parts and the surface of the driving shaft 502 is only provided with the conical stirring blade 504, at this time, the position of the spring friction plate 508 and the conical surface of the driving shaft 502 will present a “slip” condition, and by setting the contact static friction coefficient between the conical surface of the driving shaft 502 and the spring friction plate 508, the driving shaft 502 can always drive the spring friction plate 508 to rotate and will not appear the problem of being unable to drive the driven shaft 503 to rotate slowly, it should be noted that by setting the extrusion spring at the contact position of the spring friction plate 508 and the fixed sleeve 507, when the driving shaft 502 drives the spring friction plate 508 and the fixed sleeve 507 to rotate through the conical surface, at this time, the spring friction plate 508 will always be in frictional contact with the conical surface of the driving shaft 502 under the action of the extrusion spring, which can also avoid the complete slip between the driving shaft 502 and the spring friction plate 508; When the chemical reaction between the wastewater and the coagulant in the coagulation bin 1 is completed, for example, after mixing and stirring for 30-60 minutes, at this time, the electric valve 8 at the discharge port position between the coagulation bin 1 and the flocculation bin 2 is started to discharge the wastewater in the coagulation bin 1 to the inside of the flocculation bin 2 for flocculation work, and when the wastewater is also completed, at this time, the electric valve 8 at the discharge port position between the flocculation bin 2 and the air flotation bin 3 is opened again to make the wastewater completed flocculation work to the inside of the air flotation bin 3 for air flotation work, so that the organic matter and suspended impurities in the wastewater can be separated, and by setting the bottom of the coagulation bin 1 and the flocculation bin 2 to be inclined and the coagulation bin 1, the flocculation bin 2 and the air flotation bin 3 to be ladder type, when the electric valve 8 is opened, at this time, the wastewater can be quickly discharged from the inside to the lower part for the next processing procedure, which can effectively improve the efficiency of wastewater treatment.

[0030] Referring to Figures 2 to 4 The inside of the coagulation bin 1 is also provided with an auxiliary mechanism 6 for assisting the conical stirring blade 504 to work, the auxiliary mechanism 6 includes a pair of sliding push plates 604 in the coagulation bin 1, the two ends of the push plate 604 are arc-shaped, and the bottom is provided with a through groove, and the side of the push plate 604 is movably connected with a first limiting rod 606 through a hinged ball.

[0031] When the main shaft 502 drives the conical stirring blade 504 to rotate in the inside of the coagulation bin 1, the coagulant and the wastewater are mixed, at this time, the conical stirring blade 504 rotates at a high speed to mix the wastewater and the coagulant, at this time, the coagulant poured into the inside of the coagulation bin 1 may not be fully mixed with the wastewater due to the high-speed rotation of the conical stirring blade 504, and the coagulant is accumulated on both sides of the coagulation bin 1, at this time, a pair of reciprocating push plates 604 are arranged on the inside of the coagulation bin 1, when the conical stirring blade 504 stirs and mixes the wastewater and the coagulant, at this time, the push plate 604 can push the wastewater on both sides to the position of the conical stirring blade 504, and the wastewater and the coagulant that is not fully mixed are pushed to the position of the conical stirring blade 504, at this time, the conical stirring blade 504 can fully stir and mix the coagulant and the wastewater, and the stirring and mixing effect of the coagulant is improved; It should be noted that, in order to avoid that the push plate 604 cannot push the wastewater close to the inside of the coagulation bin 1 to the position of the conical stirring blade 504 during movement, a through groove is formed below the push plate 604, when the push plate 604 pushes the wastewater and the coagulant to the position of the conical stirring blade 504, at this time, the push plate 604 can also play a role in stirring and mixing to a certain extent, so that the coagulant is fully mixed with the wastewater, and when the push plate 604 moves in the inside of the coagulation bin 1, the first limiting rod 606 is driven to perform extension and contraction movement through the hinged ball, so that the push plate 604 can stably move in the inside of the coagulation bin 1, and the stability of the push plate 604 during movement is improved.

[0032] With reference to Figures 1 to 6 The auxiliary mechanism 6 further includes a slide rod 601 in sliding contact with the surface helical groove of the cylindrical cam 505, the upper portion of the slide rod 601 is fixedly connected with a driving rod 602, the upper portion of the driving rod 602 is rotatably connected with a pair of swing connecting rods 603 through a pin shaft, the lower portion of one end of the swing connecting rod 603 is rotatably connected with a connecting rod 605, and the connecting rod 605 is in sliding connection with the push plate 604 through a slide block.

[0033] When the driving shaft 502 drives the driven shaft 503 to rotate, the driven shaft 503 drives the cylindrical cam 505 to rotate, and the cylindrical cam 505 drives the sliding rod 601 to reciprocate transversely above the driven shaft 503, the sliding rod 601 drives the driving rod 602 to reciprocate, the driving rod 602 drives the pair of swing connecting rods 603 to swing through the pin shaft, the swing connecting rods 603 drive the push plate 604 to move relatively in the coagulation bin 1 through the connecting rod 605 and the sliding block below the connecting rod 605, so as to push the wastewater and coagulant to the position of the conical stirring blade 504, and the wastewater and coagulant can also be stirred, the effect of wastewater coagulation can be improved, and the chemical reaction between the coagulant and the wastewater can be accelerated. The two ends of the push plate 604 are arc-shaped, and the arc-shaped position is not provided with a through groove, so that the wastewater can be pushed to the middle position as much as possible during the movement of the push plate 604, until the wastewater and coagulant contact the rotating conical stirring blade 504, so that the conical stirring blade 504 can fully stir and mix them, and the efficiency and effect of coagulation are improved.

[0034] With reference to Figures 5 to 6 The position of the push plate 604 close to the cylindrical cam 505 is provided with the second limiting rod 607, the second limiting rod 607 is in sliding connection with the coagulation bin 1, a sealing washer is arranged at the sliding position, and the driving rod 602 is in sliding connection with the coagulation bin 1.

[0035] When the driving rod 602 drives the pair of swing connecting rods 603 to swing reciprocally around the pin shaft through the pin shaft, the push plate 604 driven by the swing connecting rods 603 moves relatively in the coagulation bin 1, the position of the push plate 604 close to the cylindrical cam 505 is provided with the second limiting rod 607, and the second limiting rod 607 is arc-shaped, when the position of the pair of swing connecting rods 603 is as shown in Figure 5 When the pair of swing connecting rods 603 drive the push plate 604 to move linearly, the position close to the cylindrical cam 505 also rotates 5° around the axis of the connecting rod 605 under the limitation of the arc-shaped second limiting rod 607, and the wastewater and coagulant close to the cylindrical cam 505 in the coagulation bin 1 are better pushed to the surface of the conical stirring blade 504 through the arc surfaces of the two ends of the push plate 604 during the movement of the push plate 604, and vice versa, when the position of the pair of swing connecting rods 603 is as shown in Figure 6At this time, the position of the push plate 604 away from the cylindrical cam 505 is closer to the position of the conical stirring blade 504, so that the wastewater in the coagulation tank 1 away from the position of the cylindrical cam 505 is better pushed to the position of the conical stirring blade 504 by the arc surface position of both ends of the push plate 604, and the wastewater injected into the coagulation tank 1 and the added coagulant can be quickly and effectively reacted under the rotation of the conical stirring blade 504 and the relative cooperation of the push plate 604; It should be noted that by arranging a sealing washer between the second limiting rod 607 and the sliding position of the coagulation tank 1, when the push plate 604 drives the second limiting rod 607 to move, the sealing washer between the second limiting rod 607 and the coagulation tank 1 can effectively prevent wastewater from leaking from the sliding position of the two; And when the push plate 604 rotates 5° around the axis of the connecting rod 605, the slider at the lower position of the connecting rod 605 and the upper connecting position of the push plate 604 will slide above the push plate 604, avoiding the situation that the push plate 604 is stuck when rotating, and the end of the first limiting rod 606 is in contact with one side of the push plate 604 through the hinged ball, so that even after the push plate 604 rotates 5°, the first limiting rod 606 will not affect the normal limiting of the push plate 604, so that the push plate 604 can stably push the wastewater and coagulant to the position of the conical stirring blade 504 in different states in the coagulation tank 1, so as to be stirred by the rapidly rotating conical stirring blade 504, and by keeping enough gap between the push plate 604 and the coagulation tank 1, even if the push plate 604 rotates ±5° at this time, it will not interfere with the coagulation tank 1.

[0036] Referring to Figures 10 to 11 A pair of gas tanks 4 are arranged on both sides of the air flotation tank 3, the lower part of the gas tank 4 is fixedly connected with a gas pipe 11, the gas pipe 11 penetrates the air flotation tank 3, and a one-way valve is arranged in the gas pipe 11, the air flotation tank 3 is provided with a scraping mechanism 9 for scraping the large particle colloidal impurities floating in the wastewater, the air flotation tank 3 is also provided with a driving mechanism 10 for driving the scraping mechanism 9 to operate, and the air flotation tank 3 is also provided with a collection tank 12 for collecting impurities.

[0037] When the flocculation tank 2 has completed the flocculation work of the waste water, the waste water is discharged to the inside of the air floatation tank 3 through the opened electric valve 8, and the air tank 4 on both sides of the air floatation tank 3 is started to synchronously supply high pressure gas to the inside of the air pipe 11, the high pressure gas is supplied to the inside of the air floatation tank 3 to carry out aeration work on the waste water in the air floatation tank 3, so that a large number of micro bubbles are generated, the micro bubbles are adsorbed and combined with the large particle colloidal impurities in the waste water to form gas-solid composite bodies, the overall density of the gas-solid composite bodies is less than the density of the waste water, so that the gas-solid composite bodies float in the air floatation tank 3, and the driving mechanism 10 is started to drive the scraping mechanism 9 to move in the air floatation tank 3, the impurities floating in the waste water are scraped by the scraping mechanism 9, and the scraped impurities are collected by the collecting tank 12, which is the prior art and will not be described in detail.

[0038] The control mode of the present application is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of those skilled in the art, the power supply is also a common knowledge in the art, and the present application is mainly used for protecting mechanical devices, so the control mode and circuit connection will not be explained in detail.

[0039] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that these entities or actions are in any such actual relationship or order. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices.

[0040] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device for seaweed powder production, comprising a coagulation chamber (1), a flocculation chamber (2), and an air flotation chamber (3), wherein the three are arranged in a stepped manner, characterized in that: The coagulation chamber (1) is equipped with a coagulation stirring mechanism (5) for mixing coagulant and seaweed wastewater, and the flocculation chamber (2) is equipped with a flocculation stirring mechanism (7) for mixing flocculant and seaweed wastewater. The coagulation and stirring mechanism (5) includes a drive shaft (502) and a driven shaft (503) that can rotate quickly and slowly. The surface of the drive shaft (502) is provided with a conical stirring blade (504). One end of the drive shaft (502) is frictionally connected to a plurality of spring friction plates (508). A fixing sleeve (507) is provided on the outside of the spring friction plates (508). A fixing cylinder (509) is fixedly connected to the outside of the fixing sleeve (507). One end of the fixing cylinder (509) is fixedly connected to the driven shaft (503). The flocculation and stirring mechanism (7) includes a rotating pusher (701) fixedly connected to the surface of the driven shaft (503). One side of the rotating pusher (701) is slidably in contact with an upper push rod (702). One end of the upper push rod (702) is rotatably connected to a moving column (703). A sliding sleeve (704) is fixedly connected below the moving column (703). A rotating column (706) is rotatably connected below the sliding sleeve (704). A stirring plate (707) is fixedly connected below the rotating column (706).

2. The wastewater treatment device for seaweed powder production according to claim 1, characterized in that: The coagulation stirring mechanism (5) also includes a motor (501) fixedly connected to one side of the coagulation bin (1), the drive shaft (502) fixedly connected to the output end of the motor (501), the surface of the drive shaft (502) is rotatably connected to an outer cylinder (506), the fixed cylinder (509) is rotatably connected to the outer cylinder (506), the two ends of the outer cylinder (506) are provided with sealing gaskets, the surface of the driven shaft (503) is fixedly connected to a cylindrical cam (505), and the surface of the cylindrical cam (505) is provided with a spiral groove, and the outer cylinder (506) is fixedly connected to the coagulation bin (1).

3. The wastewater treatment device for seaweed powder production according to claim 1, characterized in that: The flocculation stirring mechanism (7) further includes a lower push rod (705) that slides in contact with the rotating push plate (701). One end of the lower push rod (705) is movably connected to the rotating column (706) through a hinge ball. The sliding sleeve (704) is provided with baffles on both sides of the sliding direction of the driven shaft (503), and the baffles are fixedly connected to the driven shaft (503).

4. The wastewater treatment device for seaweed powder production according to claim 1, characterized in that: Below the stirring plate (707) is a scraper (708) for scraping the bottom of the flocculation chamber (2). A drive gear (709) is fixedly connected below the stirring plate (707). A driven gear (710) is meshed with one side of the drive gear (709). The driven gear (710) is fixedly connected to the scraper (708) below.

5. The wastewater treatment device for seaweed powder production according to claim 2, characterized in that: A compression spring is provided at the connection position between the spring friction plate (508) and the fixed sleeve (507). The coagulation chamber (1) is provided with a discharge port on the side near the interior of the flocculation chamber (2) and the side near the interior of the flotation chamber (3). An electric valve (8) is provided inside the discharge port.

6. The wastewater treatment device for seaweed powder production according to claim 1, characterized in that: The coagulation chamber (1) is also equipped with an auxiliary mechanism (6) for assisting the operation of the cone-shaped stirring blade (504). The auxiliary mechanism (6) includes a pair of push plates (604) that slide inside the coagulation chamber (1). The push plates (604) are arc-shaped at both ends and have through slots at the bottom. One side of the push plates (604) is movably connected to a first limiting rod (606) via a hinge ball.

7. The wastewater treatment device for seaweed powder production according to claim 6, characterized in that: The auxiliary mechanism (6) further includes a slide rod (601) that slides in contact with the spiral groove on the surface of the cylindrical cam (505). An active rod (602) is fixedly connected above the slide rod (601). A pair of swinging connecting rods (603) are rotatably connected above the active rod (602) via a pin. A connecting rod (605) is rotatably connected below one end of the swinging connecting rod (603). The connecting rod (605) is slidably connected to the push plate (604) via a slider.

8. The wastewater treatment device for seaweed powder production according to claim 7, characterized in that: The push plate (604) is provided with a second limiting rod (607) near the cylindrical cam (505). The second limiting rod (607) is slidably connected to the coagulation chamber (1), and a sealing gasket is provided at the sliding position. The active rod (602) is slidably connected to the coagulation chamber (1).

9. The wastewater treatment device for seaweed powder production according to claim 1, characterized in that: A pair of gas tanks (4) are provided on both sides of the flotation chamber (3). A vent pipe (11) is fixedly connected to the bottom of the gas tank (4). The vent pipe (11) is connected to the interior of the flotation chamber (3). A one-way valve is provided inside the vent pipe (11). A scraping mechanism (9) for scraping off large colloidal impurities floating in wastewater is provided inside the flotation chamber (3). A driving mechanism (10) for driving the scraping mechanism (9) is also provided inside the flotation chamber (3). A collection chamber (12) for collecting impurities is also provided inside the flotation chamber (3).

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