A double magnetic separation and precipitation device

Abstract

The present invention provides a dual magnetic separation sedimentation device, comprising a support frame, wherein the left and right ends above the support frame are both fixed with rotating motors, the output ends of the rotating motors are both rotatably connected to transmission rods, a separation cylinder is vertically fixed between the two transmission rods, the top and bottom of the separation cylinder are both fixed with inlet and outlet hoppers, a servo motor and a lower servo motor are fixed to the front end of the separation cylinder, a filling cylinder is fixed inside the separation cylinder, the upper and lower ends of the front inside the filling cylinder are both rotatably connected to connecting plates, and a magnetic separation component is embedded in the middle of the separation cylinder. During the magnetic separation process, the present invention allows the sediment to move up and down repeatedly to separate the sediment, which is more conducive to releasing the magnetic powder in the sediment and the flocculants adsorbed on the outer wall of the magnetic powder, and can effectively avoid the adhesion of a large amount of flocculants to the outside of the iron block during the magnetic recovery process, thereby reducing the attraction of the subsequently separated magnetic powder to the iron block, and the magnetic recovery efficiency is relatively high.

Description

Technical Field

[0001] The invention relates to the technical field of separation equipment, and in particular to a double magnetic separation precipitation device. Background Art

[0002] In recent years, the disc magnetic separation and magnetic precipitation technologies of high-density clarification and sand-added sedimentation have been widely promoted and applied in sewage treatment projects. Both technologies add magnetic seeds and flocculants to the sewage to carry out magnetic flocculation reaction, so that the suspended matter in the sewage combines with the magnetic seeds to form magnetic flocs, and then use the disc magnetic separator to separate by magnetic adsorption or the magnetic sedimentation tank to complete the solid-liquid separation, remove the magnetic flocs, purify the sewage, and the separated magnetic floc sludge enters the separation and recovery device. However, the existing separation and recovery device is easy to cause low magnetic recovery efficiency due to the high water content and large amount of sludge sediment when separating the sludge sediment;

[0003] Therefore, the prior art proposes a two-stage magnetic separation loaded magnetic precipitation sewage treatment system with patent number CN201610709888.5, which solves the problems of high sludge moisture content, large sludge volume and low magnetic recovery efficiency in the existing loaded magnetic precipitation process; it can complete wastewater treatment in a large amount, stably and quickly, the system is compact and occupies a small area, and the sludge passed through the two-pole magnetic separation device can be directly filtered and transported out through a filter press without concentration; it is provided with a mud and water reflux loop, which can repeatedly magnetically separate the mud and water, which is beneficial to reducing the sludge moisture content; the magnetic seed liquid outlet of the magnetic seed configuration box is connected to the magnetic coagulation reaction device through a magnetic seed liquid pump to form a magnetic powder circulation loop, which is beneficial to saving costs and increasing magnetic recovery efficiency; it is provided with a two-stage magnetic separation device, which can evenly disperse the sludge after scraping, which is beneficial to releasing the magnetic powder in the sludge, and has a simple structure and is easy to use.

[0004] However, in the actual magnetic separation process of this device, due to the strong magnetic force of the magnetic powder, the magnetic powder and the flocculants adsorbed on the outer wall are easily adsorbed on the outer surfaces of the primary and secondary magnetic separators and are not easy to separate. As a result, when the primary scraper and the secondary scraper scrape the magnetic powder and the flocculants adsorbed on the outer wall, the magnetic powder and the flocculants will slide on the outer walls of the primary and secondary magnetic separators, resulting in poor separation effect on the magnetic powder and the flocculants adsorbed on the outer wall and low magnetic recovery efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a dual magnetic separation and sedimentation device to solve the problems described in the above background technology.

[0006] The present invention discloses a dual magnetic separation sedimentation device, which is achieved by the following specific technical means: a dual magnetic separation sedimentation device, comprising a support frame, wherein rotating motors are fixed to the left and right ends above the support frame, and the output ends of the rotating motors are rotatably connected to transmission rods, a separation cylinder is vertically fixed between the two transmission rods, and feed and discharge hoppers are fixed to the top and bottom of the separation cylinder, a servo motor and a lower servo motor are fixed to the front end of the separation cylinder, a filling cylinder is fixed inside the separation cylinder, and the upper and lower ends of the front inside the filling cylinder are rotatably connected to connecting plates, and a magnetic separation component is embedded in the middle of the separation cylinder.

[0007] As a further solution of the present invention: the two inlet and discharge hoppers are symmetrically arranged around the transverse center axis of the separation cylinder, the distance between the inlet and discharge hoppers at the bottom of the separation cylinder and the upper surface of the support frame is 10-20 cm, and the separation cylinder is rotated 180° forward and backward in the support frame through a transmission rod.

[0008] As a further solution of the present invention: a hollow channel is provided in the middle of the filling cylinder, separation disks are embedded in the upper and lower ends of the filling cylinder, the middle of the separation disk and the middle of the hollow channel are both on the same vertical horizontal plane, and the cross-sectional area of ​​the hollow channel is smaller than the cross-sectional area of ​​the separation disk.

[0009] As a further solution of the present invention: the two separation discs are symmetrically arranged around the transverse center axis of the filling cylinder, the teeth on the outer wall of the connecting disc mesh with the teeth on the outer wall of the separation disc, and the lower servo motor is rotationally connected to the connecting disc through the gear disc.

[0010] As a further solution of the present invention: columns are fixed to the upper and lower ends of the separation disk, the cross section of the columns is rectangular, and the interior of the separation disk is vertically opened with filter holes.

[0011] As a further solution of the present invention: the magnetic separation assembly is composed of an outer frame, a fixed plate, an iron block, a limit column, a return spring, a collection box, an outer plate, a long iron rod and an outer ring;

[0012] Specifically, an outer frame is embedded in the inner rear end of the separation cylinder and the filling cylinder, a fixing plate is longitudinally embedded in the middle of the outer frame, an iron block is fixed to the inner front end of the fixing plate, limiting columns are longitudinally fixed on the left and right sides of the inner rear end of the outer frame, a return spring is nested on the outer side of the limiting column, collecting boxes are fixed at the upper and lower ends of the outer frame, an outer plate is longitudinally fixed to the inner rear end of the collecting box, a long iron rod is longitudinally fixed to the front end of the outer plate, and outer rings are embedded on the inner sides of the two transmission rods.

[0013] As a further solution of the present invention: the two collecting boxes are symmetrically arranged around the transverse central axis of the outer frame, the front ends of the collecting boxes are opened with slag inlets, the two slag inlets are respectively arranged at the upper and lower ends of the front end opening of the outer frame, the rear end of the outer frame extends from the outer wall of the separation cylinder, and the outer plate slides back and forth in the horizontal direction in the collecting box.

[0014] As a further solution of the present invention: the two limit columns are respectively embedded in the slide grooves on the left and right sides of the rear end inside the fixed plate, and the front and rear ends of the return spring are respectively tightly attached between the rear end of the outer frame and the rear end of the fixed plate.

[0015] As a further solution of the present invention: the upper surface and the lower surface of the fixed plate are on the same horizontal plane as the upper surface and the lower surface of the iron block, the upper and lower ends of the fixed plate are close to the upper and lower ends of the inner wall of the outer frame, the fixed plate slides horizontally inside the outer frame, and the interior of the separation cylinder and the filling cylinder are circularly embedded with three outer frames at equal distances.

[0016] As a further solution of the present invention: the inner wall of the outer ring is connected with a steel wire rope, the other end of the steel wire rope passes through the outer side of the middle part of the outer frame and is connected to the fixed plate, and the servo motor is rotationally connected to the outer ring through the gear plate.

[0017] 1. When separating the magnetic powder in the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder, the present invention drives the separation cylinder to repeatedly flip 180° clockwise and counterclockwise in the support frame through the transmission rod, so that the precipitate enters the lower inlet and outlet hopper from top to bottom, and then returns to the uppermost inlet and outlet hopper from bottom to top. During the up and down movement of the precipitate, it will pass through the separation disk in the filling cylinder and be dispersed. While passing through, the lower servo motor will drive the upper and lower separation disks to rotate through the connecting disk. During the rotation of the separation disk, the upper and lower columns of the separation disk will hit the precipitate, further accelerating the separation speed of the precipitate, avoiding a large amount of precipitate from being mixed together for a long time, and being more conducive to releasing the magnetic powder in the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder, further improving the subsequent separation effect of the magnetic powder and the flocculants adsorbed on its outer wall.

[0018] 2. When the precipitate is lifted up and down in the filling cylinder of the separation cylinder, the dispersed precipitate will hit the iron block on the fixed plate. At this time, the magnetic powder separated from the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder will be adsorbed on the iron block due to the magnetic force. At this time, the servo motor drives the outer ring to rotate 35° clockwise through the gear plate, so that the outer ring pulls the fixed plate to move inside the outer frame through the wire rope. At the same time, since the upper and lower ends of the fixed plate and the iron block are close to the upper and lower ends inside the outer frame, the magnetic powder adsorbed on the iron block and the flocculants adsorbed on the outer wall of the magnetic powder will be scraped off. The flocculants adsorbed on the outer wall of the scraped magnetic powder will pass through the slag inlet at one end of the collection box due to gravity and enter the collection box. Then, they are adsorbed on the outer wall of the long iron rod in the collection box, realizing the collection of the flocculants adsorbed on the outer wall of the separated magnetic powder, which can effectively avoid the adhesion of a large amount of flocculants to the outside of the iron block during the magnetic recovery process, thereby reducing the attraction of the subsequent separated magnetic powder to the iron block, and the magnetic recovery efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a right side cross-sectional schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a front cross-sectional schematic diagram of the overall structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the local structure of the separation disk in the present invention;

[0023] Figure 5 It is a schematic diagram of the partial structure of the outer frame and the outer ring in the present invention;

[0024] Figure 6 It is a schematic diagram of the explosion of the local structure of the outer frame of the present invention;

[0025] Figure 7 It is a front cross-sectional schematic diagram of the local structure of the outer frame of the present invention.

[0026] Legend:

[0027] Support frame 1, rotating motor 101, transmission rod 102, separation cylinder 2, inlet and outlet hopper 201, servo motor 202, lower servo motor 203, filling cylinder 204, separation disk 3, column 301, connecting disk 302, outer frame 4, fixed plate 401, iron block 402, limit column 403, return spring 404, collection box 405, outer plate 406, long iron rod 407, outer ring 408. DETAILED DESCRIPTION

[0028] Example 1, please refer to Figure 1-7A dual magnetic separation sedimentation device comprises a support frame 1, a rotating motor 101 is fixed to the left and right ends above the support frame 1, the output ends of the rotating motor 101 are rotatably connected to the transmission rod 102, a separation cylinder 2 is vertically fixed between the two transmission rods 102, a feed hopper 201 is fixed to the top and bottom of the separation cylinder 2, a servo motor 202 and a lower servo motor 203 are fixed to the front end of the separation cylinder 2, a filling cylinder 204 is fixed inside the separation cylinder 2, the upper and lower ends of the front inside the filling cylinder 204 are rotatably connected to the connection plate 302, and a magnetic separation component is embedded in the middle of the separation cylinder 2;

[0029] The two inlet and outlet hoppers 201 are symmetrically arranged around the transverse central axis of the separation cylinder 2. The distance between the inlet and outlet hoppers 201 at the bottom of the separation cylinder 2 and the upper surface of the support frame 1 is 10-20 cm. The separation cylinder 2 is rotated 180° forward and backward in the support frame 1 through the transmission rod 102.

[0030] A hollow channel is provided in the middle of the filling cylinder 204, and separation discs 3 are embedded in the upper and lower ends of the filling cylinder 204. The middle of the separation disc 3 and the middle of the hollow channel are both on the same vertical level, and the cross-sectional area of ​​the hollow channel is smaller than the cross-sectional area of ​​the separation disc 3.

[0031] When the precipitate is poured into the separation cylinder 2 through the inlet and discharge hopper 201 to separate the magnetic powder in the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder, the rotating motor 101 drives the separation cylinder 2 to repeatedly flip 180° clockwise and counterclockwise in the support frame 1 through the transmission rod 102, so that the precipitate enters the inlet and discharge hopper 201 below from top to bottom, and then returns to the top inlet and discharge hopper 201 from bottom to top. During the process of moving up and down, the precipitate will pass through the separation disk in the filling cylinder 204 and be dispersed, thereby realizing repeated dispersion of the precipitate, avoiding a large amount of precipitate from being mixed together for a long time, and being more conducive to releasing the magnetic powder in the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder.

[0032] Example 2, please refer to Figure 1-7 , Embodiment 2 is different from Embodiment 1 in that the two separation discs 3 are symmetrically arranged around the transverse central axis of the filling cylinder 204, the teeth on the outer wall of the connecting disc 302 are meshed with the teeth on the outer wall of the separation disc 3, and the lower servo motor 203 is rotatably connected to the connecting disc 302 through the gear disc;

[0033] The two connecting disks 302 are connected by a connecting column, so that the servo motor 203 can drive the two connecting disks 302 to rotate simultaneously;

[0034] The upper and lower ends of the separation disc 3 are fixed with columns 301, the cross section of the column 301 is rectangular, and the interior of the separation disc 3 is vertically opened with filter holes;

[0035] During the up and down movement of the sediment, it will pass through the separation disk 3 in the filling cylinder 204. At this time, the lower servo motor 203 will drive the upper and lower separation disks 3 to rotate through the connecting disk 302. During the rotation of the separation disk 3, the upper and lower columns 301 will hit the sediment, further accelerating the separation speed of the sediment, avoiding a large amount of sediment from being mixed together for a long time, and being more conducive to releasing the magnetic powder in the sediment and the flocculants adsorbed on the outer wall of the magnetic powder, further improving the subsequent separation effect of the magnetic powder and the flocculants adsorbed on its outer wall.

[0036] Example 3, please refer to Figure 1-7 , Embodiment 3 differs from Embodiment 2 in that the magnetic separation assembly is composed of an outer frame 4, a fixing plate 401, an iron block 402, a limiting column 403, a return spring 404, a collection box 405, an outer plate 406, a long iron rod 407 and an outer ring 408;

[0037] The rear ends of the separation cylinder 2 and the filling cylinder 204 are embedded with an outer frame 4, a fixing plate 401 is longitudinally embedded in the middle of the outer frame 4, an iron block 402 is fixed to the front end of the fixing plate 401, and limiting columns 403 are longitudinally fixed to the left and right sides of the rear end of the inner part of the outer frame 4, and a return spring 404 is embedded on the outer side of the limiting column 403. The upper and lower ends of the outer frame 4 are fixed with a collecting box 405, and the rear ends of the inner part of the collecting box 405 are longitudinally fixed with an outer plate 406, and a long iron rod 407 is longitudinally fixed to the front end of the outer plate 406. The inner sides of the two transmission rods 102 are embedded with outer rings 408;

[0038] The two collecting boxes 405 are symmetrically arranged around the transverse central axis of the outer frame 4. The front ends of the collecting boxes 405 are both opened with slag inlets, which are respectively arranged at the upper and lower ends of the front end opening of the outer frame 4. The rear end of the outer frame 4 extends from the outer wall of the separation cylinder 2. The outer plate 406 slides back and forth in the horizontal direction in the collecting box 405.

[0039] As the separation cylinder 2 repeatedly rotates up and down, when the magnetic powder and the flocculants adsorbed on the outer wall of the magnetic powder are scraped off, they will enter the collection box 405 through the slag inlet located at one end of the collection box 405 at the bottom due to gravity, and then be adsorbed on the outer wall of the long iron rod 407 in the collection box, which can effectively avoid a large amount of flocculants adhering to the outside of the iron block 402 during the magnetic recovery process, thereby reducing the attraction of the magnetic powder separated later to the iron block 402, and the magnetic recovery efficiency is relatively high;

[0040] Among them, the outer frame 4, the fixed plate 401, the collection box 405 and the outer plate 406 are all made of non-magnetic stainless steel materials. When there is no magnetic powder in the precipitate and the precipitate is directly de-ironized, the iron block 402 and the long iron rod 407 can be replaced with a magnet block and a magnet rod;

[0041] The two limiting posts 403 are respectively embedded in the slide grooves on the left and right sides of the rear end of the fixed plate 401, and the front and rear ends of the return spring 404 are respectively closely attached between the rear end of the outer frame 4 and the rear end of the fixed plate 401;

[0042] The main function of the return spring 404 is to push the iron block 402 on the fixed plate 401 back to its original position after being compressed, so that the iron block 402 can continue to collect the magnetic powder separated from the sedimentation and the flocculants adsorbed by the magnetic powder;

[0043] By pulling out the outer plate 406, the magnetic powder adsorbed on the outer wall of the long iron rod 407 on the outer plate 406 and the flocculants adsorbed by the magnetic powder can be cleaned;

[0044] The upper and lower surfaces of the fixing plate 401 are on the same horizontal plane as the upper and lower surfaces of the iron block 402. The upper and lower ends of the fixing plate 401 are in close contact with the upper and lower ends of the inner wall of the outer frame 4. The fixing plate 401 slides horizontally inside the outer frame 4. Three outer frames 4 are equidistantly embedded in the separation cylinder 2 and the filling cylinder 204 in a circular shape.

[0045] The inner wall of the outer ring 408 is connected with a steel wire rope, and the other end of the steel wire rope passes through the outer middle part of the outer frame 4 and is connected to the fixed plate 401. The servo motor 202 is rotatably connected to the outer ring 408 through the gear plate.

[0046] When the precipitate moves up and down in the filling cylinder 204 of the separation cylinder 2, the dispersed precipitate will hit the iron block 402 on the fixed plate 401. At this time, the magnetic powder separated from the precipitate and the flocculants adsorbed on the outer wall of the magnetic powder will be adsorbed on the iron block 402 due to the magnetic force.

[0047] The servo motor 202 drives the outer ring 408 to rotate 35° clockwise through the gear plate, so that the outer ring 408 pulls the fixed plate 401 to move into the inner part of the outer frame 4 through the steel wire rope to compress the return spring 404. While moving, the upper and lower ends of the fixed plate 401 and the iron block 402 are close to the upper and lower ends inside the outer frame 4, so that the magnetic powder adsorbed on the iron block and the flocculants adsorbed on the outer wall of the magnetic powder will be completely scraped off, and the flocculants adsorbed on the outer wall of the scraped magnetic powder will pass through the slag inlet at one end of the collecting box 405 due to gravity into the collecting box 405, and then adsorbed on the outer wall of the long iron rod in the collecting box 405, thereby realizing the collection of the separated magnetic powder and the flocculants adsorbed on the outer wall of the magnetic powder, which can effectively avoid the adhesion of a large amount of flocculants on the outside of the iron block 402 during the magnetic recovery process, thereby reducing the attraction of the subsequently separated magnetic powder to the iron block 402, and the magnetic recovery efficiency is relatively high.

[0048] The servo motor 202 drives the outer ring 408 to rotate 35° counterclockwise through the gear plate to restore the outer ring 408 to its original position. The return spring 404 restores its original position to push the fixed plate 401 to move toward one end of the middle of the filling tube 204. The iron block 402 on the fixed plate 401 continues to collect the separated magnetic powder and the flocculants adsorbed on the outer wall of the magnetic powder.

[0049] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A dual magnetic separation and precipitation device, comprising a support frame (1), characterized in that: Rotating motors (101) are fixed to the left and right ends above the support frame (1), the output ends of the rotating motors (101) are rotatably connected to transmission rods (102), a separation cylinder (2) is vertically fixed between the two transmission rods (102), a feed hopper (201) is fixed to the top and bottom of the separation cylinder (2), a servo motor (202) and a lower servo motor (203) are fixed to the front end of the separation cylinder (2), a filling cylinder (204) is fixed inside the separation cylinder (2), the upper and lower ends of the front of the filling cylinder (204) are rotatably connected to connection plates (302), and a magnetic separation component is embedded in the middle of the separation cylinder (2); The two inlet and outlet hoppers (201) are symmetrically arranged around the transverse center axis of the separation cylinder (2); the distance between the inlet and outlet hoppers (201) at the bottom of the separation cylinder (2) and the upper surface of the support frame (1) is 10-20 cm; the separation cylinder (2) is rotated 180° forward and backward in the support frame (1) via the transmission rod (102); A hollow channel is provided in the middle of the filling cylinder (204), separation discs (3) are embedded in the upper and lower ends of the filling cylinder (204), the middle of the separation disc (3) and the middle of the hollow channel are both located on the same vertical plane, and the cross-sectional area of ​​the hollow channel is smaller than the cross-sectional area of ​​the separation disc (3); The two separation discs (3) are symmetrically arranged around the transverse central axis of the filling cylinder (204); the latching teeth on the outer wall of the connection disc (302) mesh with the latching teeth on the outer wall of the separation disc (3); and the lower servo motor (203) is rotationally connected to the connection disc (302) via a gear disc; The upper and lower ends of the separation disc (3) are both fixed with upright posts (301), the cross section of the upright posts (301) is rectangular, and the interior of the separation disc (3) is vertically opened with filter holes; The magnetic separation assembly is composed of an outer frame (4), a fixed plate (401), an iron block (402), a limit column (403), a return spring (404), a collection box (405), an outer plate (406), a long iron rod (407) and an outer ring (408); An outer frame (4) is embedded in the inner rear ends of the separation cylinder (2) and the filling cylinder (204); a fixing plate (401) is longitudinally embedded in the middle of the outer frame (4); an iron block (402) is fixed to the inner front end of the fixing plate (401); limiting columns (403) are longitudinally fixed to the left and right sides of the inner rear end of the outer frame (4); a return spring (404) is embedded on the outer side of the limiting column (403); a collecting box (405) is fixed to the upper and lower ends of the outer frame (4); an outer plate (406) is longitudinally fixed to the inner rear end of the collecting box (405); a long iron rod (407) is longitudinally fixed to the front end of the outer plate (406); and an outer ring (408) is embedded in the inner sides of the two transmission rods (102); The two collecting boxes (405) are symmetrically arranged around the transverse center axis of the outer frame (4); the front ends of the collecting boxes (405) are both opened to provide slag inlets, the two slag inlets are respectively arranged at the upper and lower ends of the front end opening of the outer frame (4); the rear end of the outer frame (4) extends from the outer wall of the separation cylinder (2); and the outer plate (406) slides back and forth in the horizontal direction in the collecting box (405); The two limiting columns (403) are respectively embedded in the slide grooves on the left and right sides of the rear end of the fixed plate (401), and the front and rear ends of the return spring (404) are respectively tightly attached between the rear end of the outer frame (4) and the rear end of the fixed plate (401); The upper surface and the lower surface of the fixing plate (401) are on the same horizontal plane as the upper surface and the lower surface of the iron block (402); the upper and lower ends of the fixing plate (401) are in close contact with the upper and lower ends of the inner wall of the outer frame (4); the fixing plate (401) slides in a horizontal direction inside the outer frame (4); and three outer frames (4) are equidistantly embedded in the separation cylinder (2) and the filling cylinder (204) in a circular shape; The inner wall of the outer ring (408) is connected to a steel wire rope, the other end of the steel wire rope passes through the outer middle part of the outer frame (4) and is connected to the fixed plate (401), and the servo motor (202) is rotationally connected to the outer ring (408) via a gear plate.

Images