A heavy metal acid wastewater recovery device for praseodymium-neodymium oxide extraction

Abstract

The present invention relates to the technical field of wastewater treatment, and discloses a heavy metal acid wastewater recovery device for praseodymium-neodymium oxide extraction, wherein the inner ring of the rotating ring is fixedly connected to one end of a support plate, and the other end of the support plate is fixedly connected to the lower side wall of a water-blocking member, and a circular groove is provided on the side wall of the water-blocking member between the two support plates, and the water-blocking member is hinged to a hinge through the circular groove, one end of the hinge is connected to the circular groove through a support member, and the other end of the hinge is fixedly connected to a rotating plate. The present invention arranges a water-blocking member inside a machine body, and arranges a support plate and a rotating plate at the edge of the water-blocking member, so that the wastewater injected by the water inlet member is blocked by the water-blocking member and the moving trajectory is changed, so that it flows along the inner wall of the machine body, effectively reducing the impact force of the wastewater on the water body that has been or is being precipitated at the bottom of the machine body, avoiding the wastewater from causing a huge disturbance to it and causing the sediment to be raised again, thereby improving the sedimentation efficiency of the wastewater and enhancing the sedimentation effect.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a heavy metal acid wastewater recovery device for extracting praseodymium-neodymium oxide. Background Art

[0002] Chemical and other industries will inevitably produce a large amount of heavy metal acid wastewater during the production process, such as praseodymium-neodymium oxide extraction, etc. The wastewater contains a large amount of acidic substances and heavy metal substances. If it is directly discharged into the sewage pipe, it will cause serious pollution to the environment. Therefore, it is necessary to recover the acidic substances and heavy metal substances before discharging the wastewater. At present, the treatment process for heavy metal acid wastewater mostly adopts the method of "neutralization, precipitation, and filtration". Correspondingly, the wastewater needs to go through precipitation equipment, filtration equipment, etc. during the recycling process. The principle is to add alkaline agents to the wastewater to make the heavy metal ions form hydroxide precipitation. The precipitated solid particles are discharged and collected after passing through the sand filter. The precipitated wastewater is discharged from the recovery device after multiple subsequent operations.

[0003] However, the existing wastewater recovery devices still have some defects during use: first, when the existing wastewater is injected into the sedimentation equipment, it directly faces the solid matter that has been or is being precipitated at the bottom of the equipment, which is easy to produce a large disturbance force on it, resulting in poor sedimentation efficiency and sedimentation effect of the wastewater in the sedimentation equipment; in addition, since most sedimentation equipment uses a single dosing component, if the space inside the equipment is too large, when only one stirring component is used to mix the wastewater and the liquid medicine, the overall mixing is not uniform enough, resulting in poor mixing effect, which affects the purification treatment of the wastewater. Summary of the invention

[0004] In view of the shortcomings of the existing heavy metal acidic wastewater recovery device mentioned in the background technology during use, the present invention provides a heavy metal acidic wastewater recovery device for praseodymium-neodymium oxide extraction, which has the advantages of effectively reducing the disturbance force on the precipitated solids when the wastewater is injected, and promoting the uniform mixing of the drug solution and the wastewater as a whole, thereby improving the wastewater purification effect and efficiency, thereby solving the technical problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a heavy metal acidic wastewater recovery device for extracting praseodymium and neodymium oxide, comprising a body, a water inlet part is fixedly sleeved in the middle of the top of the body, a water outlet part is fixedly sleeved on the upper wall of one side of the body, a slag outlet part is fixedly sleeved in the middle of the bottom of the body, a dosing part is fixedly sleeved on the wall of the body on the left side of the water inlet part, an annular groove is provided on the inner wall of the body below the water outlet part, and the body is movably sleeved with a rotating ring through the annular groove, a plurality of tooth blocks are fixedly connected to the outer ring of the rotating ring, and the rotating ring is meshed with the motor equipment through the tooth blocks, the inner ring of the rotating ring is fixedly connected to one end of a support plate, and the other end of the support plate is fixedly connected to the lower side wall of the water blocking part, a circular groove is provided on the side wall of the water blocking part between the two support plates, and the water blocking part is hinged to the hinge through the circular groove, one end of the hinge is connected to the circular groove through a support part, and the other end of the hinge is fixedly connected to the rotating plate.

[0006] Preferably, the inner wall of the machine body located above the supporting plate and the rotating plate is movably connected with one end of the rotating shaft, the side wall of the water blocking member is provided with a transverse groove, and the water blocking member is movably connected with the other end of the rotating shaft through the transverse groove, the lower inner wall of the transverse groove is fixedly connected with the first rack, the outer surface of the rotating shaft corresponding to the position of the first rack is fixedly connected with the second rack, the first rack is meshed with the second rack, one end of the rotating shaft located inside the transverse groove is fixedly connected with a liquid storage membrane, the inner walls of the liquid storage membrane are connected on both sides by a tension spring, the interior of the rotating shaft is fixedly connected with a first tube, and one end of the first tube is connected to the liquid storage membrane, the interior of the rotating shaft is fixedly connected with a second tube, and one end of the second tube is connected to the first tube, the interior of the second tube is movably connected with a stirring blade, one end of the stirring blade is connected to the inner wall of the first tube by a compression spring, and a limiting block is fixedly connected to the inner wall of the transverse groove corresponding to the position of the rotating plate.

[0007] Preferably, the cross-sectional shape of the water blocking member is V-shaped.

[0008] Preferably, the cross-sectional shape of the support plate is a combination of an upper triangle and a lower rectangle, the number of the support plates and the rotating plates are eight, and the two are evenly arranged around the water blocking member, the thickness of the rotating plate is half of the support plate, the top view shape of the rotating plate is fan-shaped, and both sides of the rotating plate are in contact with the support plate.

[0009] Preferably, the cross-sectional shape of the first tube is an S-shape with multiple bends.

[0010] Preferably, the liquid storage membrane is made of rubber material, and the liquid storage membrane is filled with liquid.

[0011] Preferably, the top-view cross-sectional shape of the limit block is semicircular.

[0012] Preferably, there are multiple first racks.

[0013] The present invention has the following beneficial effects:

[0014] 1. The present invention arranges a water-blocking member inside the machine body, and arranges a supporting plate and a rotating plate on the edge of the water-blocking member, so that the wastewater injected by the water inlet member is blocked by the water-blocking member and the moving trajectory is changed, so that it flows along the inner wall of the machine body, effectively reducing the impact force of the wastewater on the water body that has settled or is settling at the bottom of the machine body, avoiding the wastewater from causing a huge disturbance to the water body and causing the sediment to be raised again, thereby improving the sedimentation efficiency of the wastewater and enhancing its sedimentation effect.

[0015] 2. The present invention sets a rotating ring on the outside of the support plate, and the rotating ring is meshed with the motor device for transmission. At the same time, a rotating shaft is set above the support plate and the rotating plate, and one end of the rotating shaft is meshed with the inside of the water-blocking part. After the dosing part adds the medicine liquid, the water-blocking part, the support plate and the rotating plate rotate to drive the medicine liquid on one side to diffuse to other directions inside the body, thereby improving the uniformity of the lateral dispersion of the medicine liquid. At the same time, the water-blocking part moves and drives the rotating shaft to rotate, so that the stirring blade stirs the wastewater and the medicine liquid at this position, thereby improving the uniformity of the longitudinal dispersion of the medicine liquid. In summary, in the process of rotation of the water-blocking part and other components, the medicine liquid is effectively promoted to be dispersed in all directions, and the medicine liquid and the wastewater are fully mixed, thereby improving the purification effect of the wastewater.

[0016] 3. The present invention sets a limit block on the inner wall of the transverse groove of the water-blocking member, and the limit block corresponds to the position of the rotating plate. At the same time, a liquid storage membrane is set on one side of the rotating shaft, and the liquid storage membrane is connected with the stirring blade through the first tube and the second tube. When the liquid storage membrane is squeezed and compressed by the limit block, the liquid in the liquid storage membrane moves and pushes the stirring blade to move outward, which not only effectively prompts the stirring blade to push the rotating plate to rotate, so that the evenly mixed wastewater above it flows downward along the inner wall of the machine body, further improving the mixing effect of the wastewater, but also makes the extended stirring blade rub against the support plate during the movement to remove solid impurities attached to it, effectively clean the stirring blade to prevent it from affecting its secondary use, and further ensure the effect of wastewater purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of the structure at center A;

[0019] Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of the structure at B in the middle;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the internal components of the present invention when the rotating plate does not rotate downward;

[0021] Figure 5 For the present invention Figure 4 A schematic diagram of a three-dimensional structure of a component with a limit block as a cross section in a state;

[0022] Figure 6 For the present invention Figure 4 A schematic diagram of the three-dimensional structure of the support plate and the rotating plate in the state;

[0023] Figure 7 For the present invention Figure 4 A schematic diagram of the structure of the components in the state from a top view;

[0024] Figure 8 It is a schematic diagram of the cross-sectional structure of the rotating shaft in the present invention.

[0025] In the figure: 1. machine body; 11. water inlet part; 12. water outlet part; 13. slag outlet part; 14. dosing part; 2. water blocking part; 3. support plate; 31. rotating ring; 32. motor equipment; 4. rotating plate; 41. hinge part; 42. support part; 5. rotating shaft; 51. first tube; 52. second tube; 6. stirring blade; 7. liquid storage membrane; 8. limit block; 9. first rack; 91. second rack. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] See also Figure 1 A heavy metal acid wastewater recovery device for extracting praseodymium and neodymium oxide comprises a body 1, a water inlet 11 is fixedly sleeved at the middle of the top of the body 1, a water outlet 12 is fixedly sleeved at the upper wall of one side of the body 1, a slag outlet 13 is fixedly sleeved at the middle of the bottom of the body 1, and a dosing part 14 is fixedly sleeved at the wall of the body 1 on the left side of the water inlet 11. Wastewater is injected by the water inlet 11, and then liquid medicine is added through the dosing part 14 to mix the liquid medicine with the wastewater. Then the wastewater is left to stand for a period of time so that the heavy metal ions in the wastewater generate solids and then precipitate at the bottom of the body 1. Then the purified wastewater is discharged to the next treatment stage through the water outlet 12, and the solids are discharged and collected through the slag outlet 13 after being stored to a certain amount.

[0029] See also Figure 1-Figure 2 , Figure 4-Figure 7, further, an annular groove is provided on the inner wall of the body 1 below the water outlet 12, and the body 1 is movably connected to the rotating ring 31 through the annular groove, and the outer ring of the rotating ring 31 is fixedly connected with a plurality of tooth blocks, and the rotating ring 31 is meshed with the motor device 32 through the tooth blocks, so that the motor device 32 can transmit the rotating ring 31 to the rotating ring 31, so that when the motor device 32 is started, the rotating ring 31 can rotate in the horizontal direction, and the inner ring of the rotating ring 31 is fixedly connected to the support plate 3 with a cross-sectional shape of an upper triangle and a lower rectangle, which can effectively promote the flow of solids and the like and prevent their residual accumulation. One end of the support plate 3 is fixedly connected to the lower side wall of the water blocking member 2 with a V-shaped cross-sectional shape, which can disperse the wastewater injected vertically downward to its surroundings, effectively avoiding the wastewater directly facing the bottom end of the body 1 and causing the settled solids to be disturbed and lifted up, and at the same time promoting the solids to fall from the surface of the water blocking member 2 in time to prevent them from remaining on it. The number of support plates 3 is eight, and they are evenly arranged around the water blocking member 2;

[0030] See also Figure 1-Figure 2 , Figure 4-Figure 7 Furthermore, a circular groove is provided on the side wall of the water blocking member 2 between the two support plates 3, and the water blocking member 2 is hinged to the hinge 41 through the circular groove, and one end of the hinge 41 is connected to the circular groove through a support member 42, and the support member 42 has elastic force, which can make the rotating plate 4 maintain a horizontal state when it is not pushed by the stirring blade 6, thereby reducing the diameter of the wastewater falling, and slowing down the speed at which the wastewater above falls to the bottom, so that the wastewater can be evenly mixed with the liquid medicine when it is above the support plate 3 and the rotating plate 4, and the other end of the hinge 41 is fixedly connected to the rotating plate 4 which is fan-shaped in top view, and the rotating plate 4 is fan-shaped in top view. The two sides of the moving plate 4 are in contact with the supporting plate 3, so that the rotating plate 4 can form a barrier to the wastewater when it is in a horizontal state, effectively reducing the amount of wastewater falling, so that the wastewater and the liquid medicine above the plane formed by the supporting plate 3 and the rotating plate 4 are fully mixed. The thickness of the rotating plate 4 is half of the supporting plate 3, which not only makes the supporting plate 3 and the rotating plate 4 form different planes, making it convenient for the two to stir the wastewater and the liquid medicine when rotating, but also effectively makes the wastewater finally converge at the rotating plate 4, so that the rotating plate 4 can rotate later to cause the wastewater to move and fall. The number of rotating plates 4 is eight, and they are evenly arranged around the water blocking member 2.

[0031] Embodiment 2:

[0032] See also Figure 1-Figure 3 , based on the first embodiment, further, the inner wall of the body 1 located above the support plate 3 and the rotating plate 4 is movably connected with one end of the rotating shaft 5, the side wall of the water blocking member 2 is provided with a transverse groove, and the water blocking member 2 is movably connected with the other end of the rotating shaft 5 through the transverse groove;

[0033] See also Figure 3-Figure 5Furthermore, a plurality of first racks 9 are fixedly connected to the lower inner wall of the transverse groove, and can mesh with the second racks 91 when the first racks 9 rotate, thereby driving the rotating shaft 5 to self-rotate, so that the stirring blades 6 effectively stir the wastewater above the supporting plate 3 and the rotating plate 4, so that it is evenly mixed with the liquid medicine, and the outer surface of the rotating shaft 5 corresponding to the position of the first racks 9 is fixedly connected with the second racks 91, and the first racks 9 mesh with the second racks 91;

[0034] See also Figure 3-Figure 5 , Figure 8 , further, one end of the rotating shaft 5 located inside the transverse groove is fixedly connected with a liquid storage film 7 made of rubber, and the liquid storage film 7 is filled with liquid. When the liquid storage film 7 is squeezed and deformed by the limit block 8, the liquid is moved to prompt the stirring blade 6 to move outward, thereby making the stirring blade 6 contact with the rotating plate 4, and the rotating plate 4 is pushed to rotate, so that the wastewater above the rotating plate 4 flows below it, which is convenient for solid matter to settle. The inner walls of the liquid storage film 7 are connected on both sides by a tension spring, and the interior of the rotating shaft 5 is fixedly sleeved with a first tube 51, and one end of the first tube 51 is connected to the liquid storage film 7. The cross-sectional shape of the first tube 51 is an S-shaped with multiple bends, and the shape of the first tube 51 can be adjusted according to the position of the stirring blade 6, so that the liquid in the first tube 51 can push the stirring blade 6 to move outward, and the interior of the rotating shaft 5 is fixedly sleeved with a second tube 52, and one end of the second tube 52 is connected to the first tube 51, and the interior of the second tube 52 is movably sleeved with the stirring blade 6, and one end of the stirring blade 6 is connected to the inner wall of the first tube 51 by a compression spring;

[0035] See also Figure 3-Figure 5 Furthermore, a limit block 8 with a semicircular cross-sectional shape in a top view is fixedly connected to the inner wall of the transverse groove corresponding to the position of the rotating plate 4, which can gradually change the shape of the liquid storage membrane 7 when the limit block 8 rotates with the water blocking member 2, and ensure that the friction generated by the limit block 8 on the liquid storage membrane 7 is small, thereby reducing the degree of wear on the liquid storage membrane 7.

[0036] The working principle of the method of the present invention is as follows:

[0037] The wastewater is injected into the machine body 1 through the water inlet 11. The wastewater originally moving vertically downward is blocked by the water blocking member 2 and changes its moving trajectory, so that it moves toward the support plate 3 and the rotating plate 4. At the same time, the medicine adding member 14 is turned on to add liquid medicine into the machine body 1, so that the liquid medicine falls and mixes with the wastewater. At this time, the motor device 32 is started, so that the motor device 32 drives the rotating ring 31 to rotate, thereby driving the water blocking member 2, the support plate 3 and the rotating plate 4 to rotate in the horizontal direction, so that the liquid medicine located on one side of the water blocking member 2 follows the water blocking member 2 and other components to the machine body 1. The other parts of the support plate 3 and the rotating plate 4 are moved to achieve full dispersion of the liquid medicine in the horizontal direction. At the same time, the rotation of the water blocking member 2 causes the first rack 9 and the second rack 91 to mesh and move, thereby driving the rotating shaft 5 to rotate, so that the stirring blades 6 fully stir the liquid medicine and wastewater around the rotating shaft 5. In summary, the mutual cooperation of the horizontal stirring and the vertical stirring makes the wastewater and the liquid medicine above the support plate 3 and the rotating plate 4 fully mixed, thereby effectively forming solids from the heavy metal plasma in the wastewater, thereby improving the purification effect of the wastewater;

[0038] During the rotation of the water blocking member 2, the limit block 8 generates intermittent squeezing on the liquid storage membrane 7. When the limit block 8 gradually squeezes the liquid storage membrane 7, the compression of the liquid storage membrane 7 causes the liquid therein to move into the first tube 51 and the second tube 52, thereby pushing the stirring blade 6 to move outward. The stirring blade 6 contacts the rotating plate 4 and generates a thrust on the rotating plate 4, causing the rotating plate 4 to rotate downward, thereby enlarging the opening between the machine body 1 and the rotating plate 4, so that the wastewater located above the support plate 3 and the rotating plate 4 can move downward along the inner wall of the machine body 1 and impact the bottom end of the machine body 1 in a small range, effectively reducing the disturbance of the settled solid matter. After that, the solid matter in this part of the wastewater gradually settles at the bottom end of the machine body 1, and At the same time, when the extended stirring blade 6 gradually moves to contact with the support plate 3, the support plate 3 and the stirring blade 6 rub against each other, effectively cleaning the solid impurities attached to the surface of the stirring blade 6, keeping it clean and preventing it from affecting the stirring effect. When the limit block 8 gradually reduces the squeezing of the liquid storage film 7, the liquid storage film 7 gradually returns to its original state, and the stirring blade 6 retracts under the pulling force of the compression spring, so that the rotating plate 4 is not pushed by the stirring blade 6 and returns to a horizontal state, and then the opening between the body 1 and the rotating plate 4 becomes smaller, the amount of wastewater falling above it is reduced, and the falling speed is slowed down, so that the wastewater needs to be fully mixed with the liquid medicine before it can fall, further improving the purification effect of the wastewater;

[0039] After the liquid medicine and the wastewater are mixed, the wastewater is allowed to stand in the body 1 for a period of time, and then the water outlet 12 is opened to discharge the purified wastewater in the body 1. At the same time, if the solid matter precipitated at the bottom of the body 1 reaches a certain amount, the slag outlet 13 is opened to discharge and collect the solid matter.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy metal acid wastewater recovery device for extracting praseodymium and neodymium oxide, comprising a body (1), a water inlet component (11) is fixedly sleeved at the middle of the top of the body (1), a water outlet component (12) is fixedly sleeved at the upper wall of one side of the body (1), a slag outlet component (13) is fixedly sleeved at the middle of the bottom of the body (1), and a dosing component (14) is fixedly sleeved on the wall of the body (1) on the left side of the water inlet component (11), characterized in that: An annular groove is provided on the inner wall of the body (1) below the water outlet member (12), and the body (1) is movably sleeved with a rotating ring (31) through the annular groove; a plurality of tooth blocks are fixedly connected to the outer ring of the rotating ring (31), and the rotating ring (31) meshes with the motor device (32) through the tooth blocks; the inner ring of the rotating ring (31) is fixedly connected to one end of the support plate (3), and the other end of the support plate (3) is fixedly connected to the lower side wall of the water blocking member (2); a circular groove is provided on the side wall of the water blocking member (2) between the two support plates (3), and the water blocking member (2) is hinged to a hinge member (41) through the circular groove; one end of the hinge member (41) is connected to the circular groove through a support member (42), and the other end of the hinge member (41) is fixedly connected to the rotating plate (4); The inner wall of the machine body (1) located above the support plate (3) and the rotating plate (4) is movably connected to one end of the rotating shaft (5); a transverse groove is provided on the side wall of the water blocking member (2), and the water blocking member (2) is movably connected to the other end of the rotating shaft (5) through the transverse groove; a first rack (9) is fixedly connected to the lower inner wall of the transverse groove; a second rack (91) is fixedly connected to the outer surface of the rotating shaft (5) corresponding to the position of the first rack (9); the first rack (9) is meshed with the second rack (91); one end of the rotating shaft (5) located inside the transverse groove is fixedly connected to a liquid storage membrane (7); The inner walls of the liquid storage membrane (7) are connected at both sides by a tension spring, the interior of the rotating shaft (5) is fixedly sleeved with a first tube (51), and one end of the first tube (51) is in communication with the liquid storage membrane (7), the interior of the rotating shaft (5) is fixedly sleeved with a second tube (52), and one end of the second tube (52) is in communication with the first tube (51), the interior of the second tube (52) is movably sleeved with a stirring blade (6), one end of the stirring blade (6) is connected to the inner wall of the first tube (51) by a compression spring, and a limiting block (8) is fixedly connected to the inner wall of the transverse groove corresponding to the position of the rotating plate (4); The cross-sectional shape of the water blocking member (2) is V-shaped; The cross-sectional shape of the support plate (3) is a combination of an upper triangle and a lower rectangle. The number of the support plates (3) and the rotating plates (4) is eight, and the two are evenly arranged around the water blocking member (2). The thickness of the rotating plate (4) is half of the thickness of the support plate (3). The top view shape of the rotating plate (4) is a fan shape, and both sides of the rotating plate (4) are in contact with the support plate (3). The top view cross-sectional shape of the limit block (8) is semicircular; During the rotation of the water blocking member (2), the stop block (8) generates intermittent squeezing of the liquid storage membrane (7). When the stop block (8) gradually squeezes the liquid storage membrane (7), the compression of the liquid storage membrane (7) causes the liquid therein to move into the first tube (51) and the second tube (52), thereby pushing the stirring blade (6) outward. The stirring blade (6) contacts the rotating plate (4) and generates thrust on the rotating plate (4), causing the rotating plate (4) to rotate downward, thereby enlarging the opening between the machine body (1) and the rotating plate (4), so that the wastewater located above the support plate (3) and the rotating plate (4) can move downward along the inner wall of the machine body (1).

2. The heavy metal acid wastewater recovery device for praseodymium-neodymium oxide extraction according to claim 1, characterized in that: The cross-sectional shape of the first tube (51) is an S-shape with multiple bends.

3. The heavy metal acid wastewater recovery device for praseodymium-neodymium oxide extraction according to claim 1, characterized in that: The liquid storage membrane (7) is made of rubber material, and liquid is contained inside the liquid storage membrane (7).

4. The heavy metal acid wastewater recovery device for praseodymium-neodymium oxide extraction according to claim 1, characterized in that: The number of the first racks (9) is multiple.

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