Flocculating agent feeding device for metallurgical wastewater treatment

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a flocculating agent dosing device for metallurgical wastewater treatment, which comprises a wastewater pool, a medicine injection barrel for injecting a flocculating agent into the wastewater pool is fixedly mounted at the bottom of the outer side of the wastewater pool, and a medicine preparation barrel for preparing a flocculating agent liquid is arranged at the top of the medicine injection barrel. A supporting box is fixedly mounted at the top of the medicine preparation barrel, a feeding assembly for feeding the medicine preparation barrel at intervals is arranged in the supporting box, and a buffer pool is fixedly mounted at the position, at the top of the medicine preparation barrel, of the wastewater pool; an arc-shaped movable plate of a dispersing disc in the buffer pool is matched with a swinging cylinder and a mixing plate to complete sufficient and thorough contact and mixing of a flocculating agent liquid and metallurgical wastewater, the arc-shaped movable plate is matched with a first hole and an auxiliary hole to disperse and inject materials into the buffer pool, flowing is large, stirring is fast, and the injection amount of the flocculating agent liquid is large; the flow is small, the stirring is slow, the flocculant injection amount is small, and the contact time and the stirring and mixing degree of the flocculant liquid and the metallurgical wastewater are improved in a self-adaptive manner.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to a flocculant dosing device for metallurgical wastewater treatment. Background Art

[0002] There are many products in the metallurgical industry, and a large amount of wastewater is discharged in the production process. It is one of the main wastewaters polluting the environment. Recycling water is an important measure for metallurgical wastewater treatment. Metallurgical wastewater contains a large amount of suspended metals and solid particles. If it is directly used in the metallurgical process or discharged, it will surely damage the metallurgical quality, metallurgical equipment or the natural environment.

[0003] At present, when recovering metals from metallurgical wastewater, polyacrylamide needs to be injected for sewage flocculation precipitation. After the polyacrylamide aqueous solution is mixed with the metallurgical wastewater, flocs are formed to accelerate the precipitation of the metallurgical wastewater, achieving the effect of recovering valuable metals in the metallurgical wastewater. In a dosing device for wastewater treatment with the authorization announcement number CN211847455U, the storage bin is fixed at the water outlet end of the drain pipe body discharging water to the sedimentation tank through a hoop, and the discharge pipe is located above the water outlet end of the drain pipe body, so that the flocculant released from the discharge pipe falls into the flowing wastewater and is discharged into the sedimentation tank together.

[0004] However, in the existing dosing of metallurgical wastewater treatment, the polyacrylamide aqueous solution is directly poured into the liquid inlet position of the wastewater tank, and it contacts the polyacrylamide aqueous solution through the flow of the wastewater inlet. However, when the wastewater flow is large or small, only the valve can be used to control the output of the polyacrylamide aqueous solution. When the wastewater flow is large, the wastewater will directly impact and drive the polyacrylamide aqueous solution into the wastewater tank, and the two do not mix and contact fully. When the wastewater flow is small, the impact of the wastewater flow is weak. At this time, if the injection amount of the polyacrylamide aqueous solution is adjusted low, it will result in a small amount of the polyacrylamide aqueous solution and a weak mixing force, and the mixing and stirring degree is low. This will also lead to a low mixing degree and insufficient contact between the wastewater and the polyacrylamide aqueous solution. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a flocculant dosing device for metallurgical wastewater treatment.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: It includes a wastewater tank. A dosing cylinder for dosing flocculant to the wastewater tank is fixedly installed at the bottom outside of the wastewater tank. A pharmaceutical cylinder for preparing the flocculant liquid is arranged at the top of the dosing cylinder. A support box is fixedly installed at the top of the pharmaceutical cylinder. An inlet component for intermittently feeding materials into the pharmaceutical cylinder is arranged inside the support box. A buffer tank is fixedly installed at the top of the pharmaceutical cylinder of the wastewater tank. A mixing component for adding the flocculant liquid is arranged inside the buffer tank.

[0007] The mixing component includes a dispersion plate fixedly installed at the top inside the buffer tank through support feet. An arc-shaped movable plate for stirring the flocculant liquid is movably arranged inside the dispersion plate. A first hole for discharging the flocculant liquid is opened at the bottom inside the dispersion plate. Auxiliary holes are opened at the bottom around the dispersion plate. A fixed rotating shaft for driving the movement of the arc-shaped movable plate is arranged at the top of the dispersion plate.

[0008] At the bottom of the dispersion plate in the buffer tank, a U-shaped fixed frame is provided. The bottom of the U-shaped fixed frame is connected with a loop-shaped connecting plate through a first rotating shaft. A swing cylinder is movably connected inside the loop-shaped connecting plate through a second rotating shaft. The top of the swing cylinder is connected to the bottom of the fixed rotating shaft through an L-shaped swing rod. A first stirring rod for mixing sewage and flocculant liquid is arranged at the bottom of the swing cylinder.

[0009] An outlet groove is opened on one side of the buffer tank far from the pharmaceutical cylinder. A number of triangular blocking plates are evenly installed at the outlet groove of the buffer tank.

[0010] As a preferred technical solution of the present invention, a motor cover is fixedly installed at the top of the buffer tank through bolts. A first motor for driving the fixed rotating shaft is fixedly installed inside the motor cover through bolts. The fixed rotating shaft is fixedly installed with a rotating disk through bolts. L-shaped rotating plates are fixedly installed around the rotating disk through bolts. The bottom of the L-shaped rotating plate is fixedly installed at the top of the arc-shaped movable plate through bolts.

[0011] An arc-shaped baffle is fixedly installed at the bottom of the outlet groove of the buffer tank through bolts. The bottom of the buffer tank is connected to the inner wall of the wastewater tank through a reinforcing rod.

[0012] A connecting plate is fixedly installed on the inner wall of the buffer tank through bolts. The connecting plate is fixedly installed on the U-shaped fixed frame. A second motor is fixedly installed at the center inside the swing cylinder through bolts. The output end of the second motor is connected with the first stirring rod. Mixing plates with mixing holes are fixedly installed around the bottom of the first stirring rod through bolts. And the mixing plates are movable around the inside of the buffer tank.

[0013] As a preferred technical solution of the present invention, an L-shaped sewage pipe is fixedly installed at the bottom on one side of the buffer tank far from the outlet groove through bolts. A water pump is connected to the outside of the medicine injection cylinder. The output end of the water pump is connected with a connecting conduit. The top of the buffer tank is connected with a liquid inlet pipe located at the top of the dispersion plate. The connecting conduit is connected to the top of the liquid inlet pipe. The top of the medicine injection cylinder is installed at the bottom of the pharmaceutical cylinder through an adapter seat. The top of the pharmaceutical cylinder is connected with a liquid injection port with a rotating cover. The bottom of the pharmaceutical cylinder is connected with a liquid outlet pipe with a valve. The bottom of the liquid outlet pipe extends into the medicine injection cylinder.

[0014] The top of the pharmaceutical cylinder is fixedly installed with a stirring tank through bolts. Inside the stirring tank, a third motor is fixedly installed through bolts. The top of the pharmaceutical cylinder is connected with a pharmaceutical rotating shaft through a bearing. Inside the pharmaceutical cylinder, a second stirring rod for mixing and stirring the flocculant is fixedly installed on the pharmaceutical rotating shaft through bolts. A first pulley is fixedly installed on the pharmaceutical rotating shaft inside the pharmaceutical cylinder. The output end of the third motor is connected with a second pulley, and a transmission belt is connected between the second pulley and the first pulley.

[0015] As a preferred technical solution of the present invention, the top end of the pharmaceutical rotating shaft is fixedly installed with a first bevel gear through bolts. The top of the first bevel gear is meshed and connected with a second bevel gear. The second bevel gear is fixedly installed with a connecting rotating shaft, and the connecting rotating shaft penetrates and extends into the inside of the support box.

[0016] The feeding assembly further includes a spherical disc movably arranged inside the support box. The top of the pharmaceutical cylinder is fixedly installed with an annular base inside the support box through bolts. An annular limiting groove is formed in the top of the annular base. A T-shaped slider is slidably connected in the annular limiting groove, and the top of the T-shaped slider is installed at the bottom of the spherical disc.

[0017] As a preferred technical solution of the present invention, an L-shaped turning cylinder is fixedly installed on the connecting rotating shaft inside the support box. Four arc-shaped positioning grooves matching the size of the L-shaped turning cylinder are formed in the top of the spherical disc. A turning groove is formed between the arc-shaped positioning grooves on the top of the spherical disc. The L-shaped turning cylinder is fixedly installed with an L-shaped turning rod matching the size of the turning groove.

[0018] A feeding pipe is fixedly installed at the center of the spherical disc. The top of the feeding pipe is connected with a flocculant cylinder, and the flocculant cylinder is movably arranged outside the top of the support box. The bottom of the feeding pipe penetrates and extends into the inside of the pharmaceutical cylinder. An interval disc is fixedly installed at the bottom of the feeding pipe in the pharmaceutical cylinder. Four feeding holes are uniformly formed in the bottom of the feeding pipe. The interval disc is provided with interval holes matching the feeding holes, and the bottom of the feeding pipe is movably abutted against the interval disc.

[0019] Compared with the prior art, the beneficial effects that the present invention can achieve are: 1. The arc-shaped movable plate of the dispersion plate in the buffer tank cooperates with the swing cylinder and the mixing plate to complete the full and thorough contact and mixing of the flocculant liquid and the metallurgical wastewater. The arc-shaped movable plate cooperates with the first hole and the auxiliary hole to inject the flocculant liquid into the buffer tank in a dispersed manner. Through the synchronous movement of the arc-shaped movable plate and the mixing plate, and the coordinated and synchronous adjustment with the flow of the metallurgical wastewater, when the wastewater flow is large, the arc-shaped movable plate in the dispersion plate will additionally dial the flocculant liquid into the auxiliary hole and disperse it into the buffer tank, increasing the injection volume of the flocculant liquid. At the same time, the dispersion plate and the arc-shaped movable plate accelerate synchronously, increasing the contact time and stirring and mixing degree of the flocculant liquid and the metallurgical wastewater. When the wastewater flow is small, the arc-shaped movable plate in the dispersion plate will disperse the flocculant liquid into the buffer tank through the first hole. Combined with the swing cylinder and the mixing plate moving in a circular motion and rotating in the buffer tank, the contact effect between the flocculant liquid and the metallurgical wastewater is greatly improved, making the contact between the two sufficient.

[0020] 2. The L-shaped turning cylinder, spherical disk, turning groove and arc-shaped positioning groove are used to achieve the intermittent injection of the powdered flocculant by the feed pipe, improving the dissolution effect in the preparation process of the flocculant liquid, reducing the labor intensity of manual addition by workers one by one, and at the same time accelerating the dissolution rate of the powdered flocculant and clear water, making the mixing of the powdered flocculant and clear water full and thorough.

[0021] 3. The feed pipe is used to carry out intermittent feeding into the pharmaceutical cylinder, realizing the mixing of stirring clear water and feeding in the pharmaceutical cylinder. The pharmaceutical cylinder and the medicine injection cylinder are used to separate the feeding of the preparation and the buffer tank, improving the preparation efficiency of the polyacrylamide aqueous solution, realizing the immediate use of the polyacrylamide aqueous solution after foaming, and at the same time ensuring the continuous performance of the preparation of the polyacrylamide aqueous solution thoroughly.

[0022] 4. The polyacrylamide aqueous solution is dispersed and discharged into the buffer tank through the first hole and the auxiliary hole by the arc-shaped movable plate. The internal rotation of the swing cylinder drives the mixing plate under the first stirring rod to move in a circular motion at the bottom of the buffer tank, realizing the full and thorough mixing effect of the polyacrylamide aqueous solution and the metallurgical wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the wastewater tank of the present invention; Figure 3 It is a schematic diagram of the structure of the medicine injection cylinder of the present invention; Figure 4 It is a schematic diagram of the structure of the buffer tank of the present invention; Figure 5 It is a schematic diagram of the structure of the outlet groove of the present invention; Figure 6 It is a schematic diagram of the internal structure of the buffer tank of the present invention; Figure 7 It is a schematic diagram of the structure of the connecting plate of the present invention; Figure 8 It is a schematic structural diagram of the dispersion disc of the present invention; Figure 9 It is a schematic structural diagram of the U-shaped fixing bracket of the present invention; Figure 10 It is a schematic structural diagram of the mixing tank of the present invention; Figure 11 It is a schematic structural diagram of the flocculant cylinder of the present invention; Figure 12 It is a schematic structural diagram of the spherical disc of the present invention; Figure 13 It is a schematic structural diagram of the feed pipe of the present invention; Figure 14 It is a schematic structural diagram of the L-shaped flipping cylinder of the present invention.

[0024] Wherein: 10, wastewater tank; 11, medicine injection cylinder; 12, L-shaped sewage pipe; 13, water pump; 14, connecting conduit; 15, liquid inlet pipe; 16, connection seat; 17, liquid outlet pipe; 20, medicine manufacturing cylinder; 21, liquid injection port; 22, mixing tank; 23, third motor; 24, medicine manufacturing rotating shaft; 25, second stirring rod; 26, first pulley; 27, second pulley; 28, transmission belt; 29, first bevel gear; 30, support box; 31, second bevel gear; 32, connecting rotating shaft; 33, L-shaped flipping cylinder; 34, L-shaped flipping rod; 40, buffer tank; 41, support feet; 42, dispersion disc; 43, arc-shaped movable plate; 44, first hole; 45, auxiliary hole; 46, outlet groove; 47, arc-shaped baffle; 48, reinforcing rod; 49, triangular blocking plate; 50, fixed rotating shaft; 51, motor cover; 52, first motor; 53, rotating disc; 54, L-shaped rotating plate; 60, U-shaped fixing bracket; 61, connecting plate; 62, first rotating shaft; 63, loop connection plate; 64, swinging cylinder; 65, L-shaped swinging rod; 66, first stirring rod; 67, second motor; 68, mixing plate; 69, second rotating shaft; 70, spherical disc; 71, annular base; 72, annular limiting groove; 73, T-shaped slider; 74, arc-shaped positioning groove; 75, flipping groove; 76, feed pipe; 77, flocculant cylinder; 78, spacer disc; 79, feed hole; 80, spacer hole. Detailed implementation manners

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0026] Embodiment: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 14 As shown, it includes a wastewater pool 10, a drug injection cylinder 11 for injecting flocculant into the wastewater pool 10 is fixedly installed at the bottom of the outer side of the wastewater pool 10, a pharmaceutical cylinder 20 for preparing flocculant liquid is arranged on the top of the drug injection cylinder 11, a support box 30 is fixedly installed on the top of the pharmaceutical cylinder 20, and a feeding component for intermittently feeding the pharmaceutical cylinder 20 is arranged inside the support box 30, and a buffer tank 40 is fixedly installed at the top of the pharmaceutical cylinder 20 of the wastewater pool 10, and a mixing component for adding flocculant liquid is arranged in the buffer tank 40.

[0027] The mixing assembly includes a dispersion plate 42 fixedly installed on the top of the buffer tank 40 by supporting legs 41, an arc-shaped movable plate 43 for moving the flocculant liquid is movably arranged inside the dispersion plate 42, a first hole 44 for discharging the flocculant liquid is opened at the bottom of the dispersion plate 42, auxiliary holes 45 are opened at the bottom around the dispersion plate 42, and a fixed rotating shaft 50 for driving the arc-shaped movable plate 43 to move is arranged on the top of the dispersion plate 42.

[0028] The buffer tank 40 is provided with a U-shaped fixing frame 60 at the bottom of the dispersion disk 42. The bottom of the U-shaped fixing frame 60 is connected to a circular connecting plate 63 through a first rotating shaft 62. The inside of the circular connecting plate 63 is movably connected to a swing cylinder 64 through a second rotating shaft 69. The top of the swing cylinder 64 is connected to the bottom of the fixed rotating shaft 50 through an L-shaped swing arm 65. The bottom of the swing cylinder 64 is provided with a first stirring rod 66 for mixing sewage and flocculant liquid.

[0029] The buffer pool 40 is provided with an outlet groove 46 on a side far from the pharmaceutical cylinder 20. A number of triangular blocking plates 49 are evenly installed at the outlet groove 46 of the buffer pool 40. The metallurgical wastewater entering through the L-shaped sewage pipe 12 is blocked and buffered by the triangular blocking plates 49, preventing the metallurgical wastewater from being directly discharged into the wastewater pool 10. At the same time, the contact residence time between polyacrylamide and the metallurgical wastewater can also be increased by using the triangular blocking plates.

[0030] Refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 The top of the buffer pool 40 is fixedly installed with a motor cover 51 by bolts. Inside the motor cover 51, a first motor 52 for driving the fixed rotating shaft 50 is fixedly installed by bolts. The fixed rotating shaft 50 is fixedly installed with a rotating disk 53 by bolts. Around the rotating disk 53, an L-shaped rotating plate 54 is fixedly installed by bolts. The bottom of the L-shaped rotating plate 54 is fixedly installed on the top of the arc-shaped movable plate 43 by bolts. The arc-shaped movable plate 43 is driven by the first motor 52 to move clockwise in the dispersion disk 42. The polyacrylamide aqueous solution is stirred by using the arc-shaped movable plate 43, so that the flocculant liquid enters the buffer pool 40 through the first hole 44. When the arc-shaped movable plate 43 accelerates, the flocculant liquid will not only be discharged from the first hole 44, but also be discharged from the auxiliary hole 45, making the flocculant liquid evenly dispersed in the buffer pool 40.

[0031] An arc-shaped baffle 47 is fixedly installed at the bottom of the outlet groove 46 of the buffer pool 40 by bolts. The arc-shaped baffle 47 effectively prevents the wall flow phenomenon of the sewage flowing out of the outlet groove 46. The bottom of the buffer pool 40 is connected to the inner wall of the wastewater pool 10 through a reinforcing rod 48.

[0032] A connecting plate 61 is fixedly installed on the inner wall of the buffer pool 40 by bolts. The connecting plate 61 is fixedly installed on the U-shaped fixing frame 60. At the center inside the swinging cylinder 64, a second motor 67 is fixedly installed by bolts. The output end of the second motor 67 is connected with a first stirring rod 66. Around the bottom of the first stirring rod 66, a mixing plate 68 with mixing holes is fixedly installed by bolts. And the mixing plate 68 moves inside the peripheral part of the buffer pool 40. The flocculant liquid and the metallurgical wastewater in the buffer pool 40 are fully mixed and stirred through the mixing plate 68 and the mixing holes.

[0033] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 10 、 Figure 11 and Figure 12, a buffer pool 40 is fixedly installed by bolts at the bottom on one side far from the outlet groove 46. An L-shaped sewage pipe 12 is used to inject metallurgical wastewater into the buffer pool 40. A water pump 13 is connected to the outside of the medicine injection cylinder 11. The output end of the water pump 13 is connected to a connecting conduit 14. The top of the buffer pool 40 is connected to a liquid inlet pipe 15 located at the top of the dispersion plate 42. The connecting conduit 14 is connected to the top of the liquid inlet pipe 15. The flocculant liquid is injected into the buffer pool 40 through the water pump 13, the connecting conduit 14 and the liquid inlet pipe 15. The top of the medicine injection cylinder 11 is installed at the bottom of the medicine preparation cylinder 20 through an adapter seat 16. The top of the medicine preparation cylinder 20 is connected to a liquid injection port 21 with a rotary cover. Clear water is injected into the interior of the medicine preparation cylinder 20 through the liquid injection port 21 for preparing the flocculant liquid. The bottom of the medicine preparation cylinder 20 is connected to a liquid outlet pipe 17 with a valve. The bottom of the liquid outlet pipe 17 extends into the medicine injection cylinder 11 to discharge the prepared flocculant liquid in the medicine preparation cylinder 20 into the medicine injection cylinder 11, and the flocculant liquid is injected into the buffer pool 40 through the medicine injection cylinder 11.

[0034] The top of the medicine preparation cylinder 20 is fixedly installed by bolts with a stirring box 22. A third motor 23 is fixedly installed inside the stirring box 22. The top of the medicine preparation cylinder 20 is connected by a bearing with a medicine preparation rotating shaft 24. Inside the medicine preparation cylinder 20, a second stirring rod 25 for mixing and stirring the flocculant is fixedly installed on the medicine preparation rotating shaft 24. The third motor 23 drives the medicine preparation rotating shaft 24 and the second stirring rod 25 to perform mixing and stirring to mix the powdery flocculant with clear water to prepare the flocculant liquid. A first pulley 26 is fixedly installed on the medicine preparation rotating shaft 24 inside the medicine preparation cylinder 20. The output end of the third motor 23 is connected to a second pulley 27. A transmission belt 28 is connected between the second pulley 27 and the first pulley 26. The rotation of the medicine preparation rotating shaft 24 is driven by the cooperation of the belt and the transmission belt 28.

[0035] Refer to Figure 3 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 , the top end of the medicine preparation rotating shaft 24 is fixedly installed by bolts with a first bevel gear 29. The top of the first bevel gear 29 is meshed and connected with a second bevel gear 31. The second bevel gear 31 is fixedly installed with a connecting rotating shaft 32. The connecting rotating shaft 32 penetrates and extends into the interior of the support box 30. The rotational movement of the medicine preparation rotating shaft 24 drives the connecting rotating shaft 32 to perform synchronous rotational movement through the meshing transmission of the bevel gears.

[0036] The feeding assembly also includes a spherical disk 70 that moves inside the support box 30. The top of the medicine cylinder 20 is fixed with an annular base 71 in the support box 30 by bolts. An annular limiting groove 72 is provided on the top of the annular base 71. A T-shaped slider 73 is slidably connected in the annular limiting groove 72. The top of the T-shaped slider 73 is installed on the bottom of the spherical disk 70. The spherical disk 70 achieves stable and smooth rotational motion through the T-shaped slider 73 and the annular limiting groove 72.

[0037] See also Figure 2 , Figure 3 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 The connecting shaft 32 is fixedly installed with an L-shaped flip cylinder 33 in the supporting box 30 by bolts. Four groups of arc-shaped positioning grooves 74 that match the size of the L-shaped flip cylinder 33 are opened on the top of the spherical disk 70. A flip groove 75 is opened between the arc-shaped positioning grooves 74 on the top of the spherical disk 70. An L-shaped flip rod 34 that matches the size of the flip groove 75 is fixedly installed on the L-shaped flip cylinder 33. During the flipping process of the L-shaped flip cylinder 33, when the L-shaped flip rod 34 rotates and enters the flip groove 75 on the spherical disk 70, the L-shaped flip rod 34 will drive the spherical disk 70 on the annular base 71 to rotate. At this time, the L-shaped flip cylinder 33 is separated from the arc-shaped positioning groove 74 on the spherical disk 70. When the L-shaped flip rod 34 rotates and separates from the flip groove 75 of the spherical disk 70, the L-shaped flip cylinder 33 enters the arc-shaped positioning groove 74 of the spherical disk 70 again.

[0038] A feed pipe 76 is fixedly installed at the center of the spherical disk 70, and a flocculant cylinder 77 is connected to the top of the feed pipe 76, and the flocculant cylinder 77 is movable on the outside of the top of the support box 30, and the bottom of the feed pipe 76 extends through to the inside of the pharmaceutical cylinder 20, and the pharmaceutical cylinder 20 is fixedly installed with a spacer disk 78 at the bottom of the feed pipe 76, and four groups of feed holes 79 are evenly opened at the bottom of the feed pipe 76, and the spacer disk 78 is opened with spacer holes 80 matching the feed holes 79, and the bottom of the feed pipe 76 and the spacer disk 78 are movably abutted against each other, and the discharge is achieved by aligning the feed holes 79 under the feed pipe 76 with the spacer holes 80 on the spacer disk 78, and the discharge cannot be achieved if the feed holes 79 and the spacer holes 80 are staggered, thereby realizing the interval injection of the powdered flocculant by the feed pipe 76, effectively preventing the flocculant from agglomerating when the flocculant is injected into clean water at one time to prepare the flocculant liquid, thereby improving the effect of the flocculant liquid preparation.

[0039] Working principle: metallurgical wastewater is discharged into the buffer tank 40 through the L-shaped sewage pipe 12, and polyacrylamide is mixed with an aqueous solution in the pharmaceutical cylinder 20. Generally, the mixing ratio of polyacrylamide to water is one thousandth, that is, one kilogram of solid polyacrylamide is added to one ton of water. After mixing and stirring, the polyacrylamide aqueous solution is input into the liquid inlet pipe 15 on the buffer tank 40 through the connecting conduit 14 by the water pump 13, and the polyacrylamide aqueous solution is guided into the dispersion disk 42 through the liquid inlet pipe 15, and enters the bottom of the buffer tank 40 through the first hole 44 at the bottom of the dispersion disk 42. At the bottom of the buffer tank 40, the polyacrylamide aqueous solution and the wastewater in the L-shaped sewage pipe 12 are mixed, so that the suspended matter in the wastewater forms flocs and enters the wastewater tank 10. After settling in the wastewater tank 10 for a certain period of time, the bottom sludge will be transported to the plate and frame filter press by the sludge pump for filtration and pressing, so as to achieve sludge dehydration to produce mud cake, and valuable metals are extracted from the mud cake. The purified water overflows into the clear water tank for recycling.

[0040] When preparing the polyacrylamide aqueous solution, clean water is injected into the pharmaceutical cylinder 20 through the injection port 21, and a certain proportion of polyacrylamide is injected into the flocculant cylinder 77 for fixing. The second pulley 27 is driven to rotate by the third motor 23 in the stirring box 22, and the second pulley 27 drives the first pulley 26 on the pharmaceutical shaft 24 to rotate synchronously through the transmission belt 28. During the rotation of the pharmaceutical shaft 24, the clean water in the pharmaceutical cylinder 20 is mixed and stirred by the second stirring rod 25. At the same time, the first bevel gear 29 at the top of the pharmaceutical shaft 24 will mesh with the second bevel gear 31 for synchronous movement, and the connecting shaft 31 on the second bevel gear 31 will rotate synchronously. 2 will drive the L-shaped turning cylinder 33 to perform synchronous rotational motion in the supporting box 30. During the turning process of the L-shaped turning cylinder 33, when the L-shaped turning rod 34 rotates and enters the turning groove 75 on the spherical disk 70, the L-shaped turning rod 34 will drive the spherical disk 70 on the annular base 71 to perform rotational motion. At this time, the L-shaped turning cylinder 33 is separated from the arc-shaped positioning groove 74 on the spherical disk 70. After the L-shaped turning rod 34 rotates and separates from the turning groove 75 of the spherical disk 70, the L-shaped turning cylinder 33 enters the arc-shaped positioning groove 74 of the spherical disk 70 again. This reciprocating process is repeated, and the spherical disk 70 connected to the annular base 71 is rotated by the L-shaped turning cylinder 33 at intervals. When the spherical disk 70 rotates at intervals, it drives the feed pipe 76 and the flocculant cylinder 77 to rotate synchronously. When the feed hole 79 at the bottom of the feed pipe 76 is aligned with the interval hole 80 of the interval disk 78, the powdered polyacrylamide in the feed pipe 76 will enter the clean water of the medicine cylinder 20 through the feed hole 79 and the interval hole 80. When the feed hole 79 and the interval hole 80 are staggered, the feed pipe 76 is blocked and stops feeding. In this way, the feed pipe 76 can complete the interval injection of the medicine cylinder 20, and the medicine cylinder 20 can be stirred with clean water while the injection and mixing of materials are achieved. After mixing for 40 to 60 minutes, open the valve on the liquid outlet pipe 17 to put the polyacrylamide in the pharmaceutical cylinder 20 into the medicine injection cylinder 11. The addition of the polyacrylamide aqueous solution is completed through the cooperation of the medicine injection cylinder 11 and the water pump 13. By separating the pharmaceutical process from the medicine injection process, the preparation efficiency of the polyacrylamide aqueous solution is improved, and the polyacrylamide aqueous solution can be used immediately after being prepared on the spot.

[0041] In the buffer pool 40, the first motor 52 drives the fixed rotating shaft 50 to rotate. The fixed rotating shaft 50 drives the swing cylinder 64 to rotate through the L-shaped swing rod 65. The swing cylinder 64 moves in a circular motion along the bottom of the buffer pool 40 under the action of the loop connection plate 63, the first rotating shaft 62 and the second rotating shaft 69. Specifically, when the L-shaped swing rod 65 and the U-shaped fixing frame 60 are in the same plane, the loop connection plate 63 cooperates with the first rotating shaft 62 and the second rotating shaft 69 to make the swing cylinder 64 tilt on the left and right sides of the U-shaped fixing frame 60 for reference. Figure 9 , at this time, the loop connection plate 63 remains horizontal. When the L-shaped swing rod 65 and the U-shaped fixing frame 60 form a vertical staggered state, the loop connection plate 63 is in an inclined structure. The loop connection plate 63 cooperates with the first rotating shaft 62 and the second rotating shaft 69 to make the swing cylinder 64 tilt on the front and back sides of the U-shaped fixing frame 60. When the swing cylinder 64 drives the first stirring rod 66 and the mixing plate 68 to move in a circular motion around the inner bottom of the buffer pool 40, the second motor 67 inside the swing cylinder 64 drives the first stirring rod 66 to move, realizing the circular motion of the swing cylinder 64 in the buffer pool 40. The first stirring rod 66 inside the swing cylinder 64 rotates self-driven. The mixing plate 68 is used to complete the mixing and stirring of the polyacrylamide aqueous solution and the metallurgical waste liquid. After stirring, it flows through the triangular baffle plate 49 into the waste water pool 10 for precipitation. At the same time, the triangular baffle plate 49 can buffer and block the flow of the sewage injected into the L-shaped sewage pipe 12 to a certain extent, so that the metallurgical waste water flowing into the buffer pool 40 can cooperate with the mixing plate 68 to complete the residence and stirring, greatly improving the mixing degree of the polyacrylamide aqueous solution and the metallurgical waste water; The fixed rotating shaft 50 drives the arc-shaped movable plate 43 in the dispersion disc 42 to perform a rotational motion through the rotating disc 53 and the L-shaped rotating plate 54. The arc-shaped movable plate 43 rotates clockwise in the dispersion disc 42. When the amount of metallurgical wastewater is small and the flow rate is low, the fixed rotating shaft 50 drives the swing cylinder 64 and the arc-shaped movable plate 43 to operate at a slow speed. The arc-shaped movable plate 43 only serves to drive the polyacrylamide aqueous solution to disperse and fall into the buffer pool 40 through the first hole 44. The polyacrylamide aqueous solution and the metallurgical wastewater are fully and thoroughly mixed and stirred through the cooperation of the swing cylinder 64 and the first stirring rod 66 with the buffer pool 40. When the amount of metallurgical wastewater is large and the flow rate is high, the fixed rotating shaft 50 drives the swing cylinder 64 and the first stirring rod 66 to perform accelerated stirring. At the same time, the arc-shaped movable plate 43 rotates synchronously and accelerates in the dispersion disc 42. At this time, the arc-shaped movable plate 43 will cause part of the polyacrylamide aqueous solution to enter the buffer pool 40 through the auxiliary hole 45. While increasing the dosage of the polyacrylamide aqueous solution, it can also accelerate the stirring and mixing intensity, so that the polyacrylamide aqueous solution is fully mixed with the metallurgical wastewater.

[0042] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit and scope of the present invention within the knowledge of those skilled in the art to which the present invention pertains.

Claims

1. A flocculant dosing device for metallurgical wastewater treatment, comprising a wastewater tank (10), characterized in that, A medicine injection cylinder (11) for injecting flocculant into the waste water tank (10) is fixedly installed at the outer bottom of the waste water tank (10). A medicine preparation cylinder (20) for preparing flocculant liquid is arranged at the top of the medicine injection cylinder (11). A support box (30) is fixedly installed at the top of the medicine preparation cylinder (20). A feeding assembly for intermittently feeding the medicine preparation cylinder (20) is arranged inside the support box (30). A buffer tank (40) is fixedly installed at the top of the medicine preparation cylinder (20) of the waste water tank (10). A mixing assembly for adding flocculant liquid is arranged inside the buffer tank (40). The mixing assembly includes a dispersion plate (42) fixedly installed at the inner top of the buffer tank (40) through a support leg (41). An arc-shaped movable plate (43) for stirring the flocculant liquid is movably arranged inside the dispersion plate (42). A first hole (44) for discharging the flocculant liquid is opened at the inner bottom of the dispersion plate (42). Auxiliary holes (45) are opened at the bottom around the dispersion plate (42). A fixed rotating shaft (50) for driving the arc-shaped movable plate (43) to move is arranged at the top of the dispersion plate (42). A U-shaped fixing frame (60) is arranged at the bottom of the buffer tank (40) below the dispersion plate (42). The bottom of the U-shaped fixing frame (60) is connected with a loop-shaped connecting plate (63) through a first rotating shaft (62). A swing cylinder (64) is movably connected inside the loop-shaped connecting plate (63) through a second rotating shaft (69). The top of the swing cylinder (64) is connected to the bottom of the fixed rotating shaft (50) through an L-shaped swing rod (65). A first stirring rod (66) for mixing sewage and flocculant liquid is arranged at the bottom of the swing cylinder (64). An outlet groove (46) is opened on one side of the buffer tank (40) far away from the medicine preparation cylinder (20). A plurality of triangular blocking plates (49) are evenly installed at the outlet groove (46) of the buffer tank (40).

2. The flocculant dosing device for metallurgical wastewater treatment according to claim 1, characterized in that, A motor cover (51) is fixedly installed at the top of the buffer tank (40) through bolts. A first motor (52) for driving the fixed rotating shaft (50) is fixedly installed inside the motor cover (51) through bolts. A rotating disk (53) is fixedly installed on the fixed rotating shaft (50) through bolts. L-shaped rotating plates (54) are fixedly installed around the rotating disk (53) through bolts. The bottom of the L-shaped rotating plate (54) is fixedly installed on the top of the arc-shaped movable plate (43) through bolts. An arc-shaped baffle (47) is fixedly installed at the bottom of the outlet groove (46) of the buffer tank (40) through bolts. The bottom of the buffer tank (40) is connected to the inner wall of the waste water tank (10) through a reinforcing rod (48).

3. The flocculant dosing device for metallurgical wastewater treatment according to claim 2, characterized in that, The inner wall of the buffer pool (40) is fixedly installed with a connecting plate (61) by bolts. The connecting plate (61) is fixedly installed on the U-shaped fixing frame (60). At the center inside the swinging cylinder (64), a second motor (67) is fixedly installed by bolts. The output end of the second motor (67) is connected to the first stirring rod (66). Around the bottom of the first stirring rod (66), a mixing plate (68) with mixing holes is fixedly installed by bolts, and the mixing plate (68) is movable around the inside of the buffer pool (40).

4. A flocculant dosing device for metallurgical wastewater treatment according to claim 1, characterized in that, On the bottom side of the buffer pool (40) far from the outlet groove (46), an L-shaped sewage pipe (12) is fixedly installed by bolts. A water pump (13) is connected to the outside of the medicine injection cylinder (11). The output end of the water pump (13) is connected to a connecting conduit (14). The top of the buffer pool (40) is connected to a liquid inlet pipe (15) located above the dispersion disc (42). The connecting conduit (14) is connected to the top of the liquid inlet pipe (15). The top of the medicine injection cylinder (11) is installed at the bottom of the medicine making cylinder (20) through an adapter seat (16). The top of the medicine making cylinder (20) is connected to a liquid injection port (21) with a rotary cover. The bottom of the medicine making cylinder (20) is connected to a liquid outlet pipe (17) with a valve, and the bottom of the liquid outlet pipe (17) extends into the medicine injection cylinder (11).

5. A flocculant dosing device for metallurgical wastewater treatment according to claim 1, characterized in that, At the top of the medicine making cylinder (20), a stirring box (22) is fixedly installed by bolts. Inside the stirring box (22), a third motor (23) is fixedly installed by bolts. The top of the medicine making cylinder (20) is connected to a medicine making rotating shaft (24) through a bearing. Inside the medicine making cylinder (20), a second stirring rod (25) for mixing and stirring the flocculant is fixedly installed on the medicine making rotating shaft (24) by bolts. Inside the medicine making cylinder (20), a first pulley (26) is fixedly installed on the medicine making rotating shaft (24) by bolts. The output end of the third motor (23) is connected to a second pulley (27), and a transmission belt (28) is connected between the second pulley (27) and the first pulley (26).

6. The flocculant dosing device for metallurgical wastewater treatment according to claim 5, characterized in that, At the top end of the medicine making rotating shaft (24), a first bevel gear (29) is fixedly installed by bolts. The first bevel gear (29) is meshed and connected with a second bevel gear (31) at the top. The second bevel gear (31) is fixedly installed with a connecting rotating shaft (32), and the connecting rotating shaft (32) penetrates and extends into the inside of the support box (30).

7. A flocculant dosing device for metallurgical wastewater treatment according to claim 6, characterized in that, The feeding assembly further includes a spherical disc (70) movable inside the support box (30). At the top of the medicine making cylinder (20) inside the support box (30), an annular base (71) is fixedly installed by bolts. An annular limiting groove (72) is formed at the top of the annular base (71). A T-shaped slider (73) is slidably connected inside the annular limiting groove (72), and the top of the T-shaped slider (73) is installed at the bottom of the spherical disc (70).

8. A flocculant dosing device for metallurgical wastewater treatment according to claim 7, characterized in that, The connecting rotating shaft (32) is fixedly installed with an L-shaped flipping cylinder (33) in the support box (30) through bolts. Four arc-shaped positioning grooves (74) that match the size of the L-shaped flipping cylinder (33) are formed at the top of the spherical disc (70). A flipping groove (75) is formed at the top of the spherical disc (70) between the arc-shaped positioning grooves (74). The L-shaped flipping cylinder (33) is fixedly installed with an L-shaped flipping rod (34) that matches the size of the flipping groove (75).

9. A flocculant dosing device for metallurgical wastewater treatment according to claim 8, characterized in that, A feed pipe (76) is fixedly installed at the center of the spherical disc (70). The top of the feed pipe (76) is connected with a flocculant cylinder (77), and the flocculant cylinder (77) is movably located outside the top of the support box (30). The bottom of the feed pipe (76) extends through and into the interior of the pharmaceutical cylinder (20). A spacer disc (78) is fixedly installed at the bottom of the feed pipe (76) inside the pharmaceutical cylinder (20). Four feed holes (79) are evenly formed at the bottom of the feed pipe (76). The spacer disc (78) is provided with spacer holes (80) that match the feed holes (79). The bottom of the feed pipe (76) is movably abutted against the spacer disc (78).

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