Device for recovering iron powder in steel wastewater

Abstract

The invention relates to the field of metal recovery devices, in particular to a device for recovering iron powder in steel wastewater, which comprises a device frame, a chute is fixedly mounted at the upper part of the right side of the device frame, a magnetic separation mechanism is arranged on the device frame, and a water pushing mechanism for changing the water flow direction is further arranged on the device frame. A new scraper blade can be replaced to make contact with the magnetic disk by rotating the rotating pipe fitting, so that the scraper blade is replaced without shutdown, the scraper blade is locked on the rotating pipe fitting through the gravity of the scraper blade, the process of replacing the old scraper blade is simplified, the moving assembly can drive the water pushing plate to move back and forth in a reciprocating mode, and the water pushing plate can move back and forth in a reciprocating mode. The water pushing plate pushes the wastewater to impact on the side surface of the magnetic disk back and forth, so that the chance of contact between iron powder in the wastewater and the side surface of the magnetic disk is increased, the adsorption capacity of the magnetic disk on the iron powder in the wastewater is increased, and the recovery effect on the iron powder is improved.

Description

Technical Field

[0001] The present invention relates to the field of metal recovery devices, and specifically to an iron powder recovery device for steel wastewater. Background Art

[0002] In order to save mineral resources, reduce production costs, and prevent environmental pollution, it is necessary to recover iron powder from steel wastewater. Industrially, a wet magnetic separator is generally used to recover iron powder from steel wastewater. The wet magnetic separator consists of a main machine, magnetic disks, a scraper, a chute, and a flushing pipe. During operation, the main machine drives multiple magnetic disks to rotate. When the wastewater passes through the lower part of the magnetic disks, the magnetic disks adsorb the iron powder in the wastewater on their sides. Subsequently, the rotating magnetic disks drive the iron powder to the position of the scraper, so that the scraper scrapes the iron powder on the magnetic disks into the chute. At the same time, the flushing pipe flushes water towards the sides of the magnetic disks, so that the water flow further flushes the iron powder on the sides of the magnetic disks into the chute.

[0003] However, the scraper of the existing wet magnetic separator will be worn after a long time, resulting in a gap between the scraper and the magnetic disks, thereby reducing the scraping effect on the iron powder. Therefore, it is necessary to replace the scraper regularly. When replacing the scraper of the existing wet magnetic separator, it is necessary to stop the machine, which reduces the recovery efficiency of the iron powder, and the process of replacing the scraper is relatively cumbersome.

[0004] In addition, when the wet magnetic separator recovers the iron powder in the wastewater, the wastewater usually moves along the tangent direction of the magnetic disks, resulting in a small contact area between the iron powder in the wastewater and the sides of the magnetic disks. As a result, some iron powder in the wastewater cannot be adsorbed by the magnetic disks, reducing the recovery effect of the iron powder. Summary of the Invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an iron powder recovery device for steel wastewater, including a device frame. A chute is fixedly installed on the upper right side of the device frame. A magnetic separation mechanism is arranged on the device frame, and a water pushing mechanism for changing the water flow direction is also arranged on the device frame.

[0006] The magnetic separation mechanism includes a main shaft rotatably arranged in the middle of the device frame. Magnetic disks are equidistantly arranged along the front-back direction on the main shaft through a ball cage universal joint. Rotating rods corresponding to the magnetic disks one by one are equidistantly arranged along the front-back direction on the upper part of the device frame. A scraping component for scraping the two sides of the magnetic disks is arranged on the lower right side of the rotating rod. The magnetic separation mechanism also includes an adjusting component for rotating the rotation direction of the magnetic disks.

[0007] The water pushing mechanism includes a square rod slidably inserted through the left side of the device frame in the front-back direction. Water pushing plates are fixedly installed on the square rod at equal intervals along the front-back direction. The water pushing plates are in an arc structure coaxial with the magnetic disks. A moving component for driving the water pushing plates to reciprocate back and forth is jointly arranged on the device frame and the water pushing plates. A turning component for turning the iron powder at the bottom of the water flow upward is arranged on the water pushing plates.

[0008] The scraper assembly includes a connecting plate frame fixedly installed on the right side of the rotating rod, and two rotating pipes symmetrically arranged front and back are rotatably provided at the lower right side of the connecting plate frame, and scrapers are arranged at equal intervals along the circumference of the rotating pipe on the left side.

[0009] As a preferred technical solution of the present invention, the scraper assembly also includes an arc-shaped cover plate arranged at equal intervals along the circumference of the rotating tube on its left side, the arc-shaped cover plate and the scraper are staggered, and the two rotating tubes on the same connecting plate frame are respectively located on the front and rear sides of the magnetic disks at corresponding positions, and the arc-shaped cover plate and the scraper are connected to the rotating tube in a detachable manner.

[0010] As a preferred technical solution of the present invention, the rotating tube is arranged along the radial direction of the magnetic disk, and the rotating tube gradually tilts downward from left to right, the scraper is installed on the rotating tube from left to right through the slide groove, and the arc cover is installed on the rotating tube from left to right through the rectangular guide rod thereon, and there is an angle between the length direction of the scraper and the radial direction of the rotating tube.

[0011] As a preferred technical solution of the present invention, two locking rods are symmetrically arranged front and back and slide forward and backward at the lower right side of the connecting plate frame, a push spring is arranged between the two locking rods on the same connecting plate frame, and sockets corresponding to the scrapers one by one and for the locking rods to be inserted are opened on the rotating pipe at equal intervals along its circumference.

[0012] As a preferred technical solution of the present invention, the adjustment assembly includes an abutment portion for connecting the magnetic disk at the lower end of a rotating rod fixedly mounted, an angle rod is rotatably arranged on the left side of the device frame, a torsion spring is arranged between the angle rod and the device frame, a water blocking plate is fixedly mounted on the lower rear side of the angle rod, and a control portion for rotating the rotating rod according to the rotation angle of the angle rod is arranged on the upper side of the device frame.

[0013] As a preferred technical solution of the present invention, the abutment portion includes a rib-shaped plate fixedly mounted on the lower end of the rotating rod, and two left-right symmetrically arranged number one wheels are rotatably arranged in the middle part of the rib-shaped plate, and two groups of number two wheels are symmetrically arranged front-to-back and equally spaced along the circumference of the disk are rotatably arranged in the interior of the rib-shaped plate.

[0014] As a preferred technical solution of the present invention, the control unit includes an angle sensor fixedly installed on the upper side of the device frame, the angle sensor is fixedly connected to the angle rod, a swing plate is fixedly installed on the upper part of the rotating rod, a synchronization plate is hinged on the left side of the swing plate, an electric push rod is hinged between the synchronization plate and the device frame, and the rotation angle change of the angle rod is proportional to the extension amount of the telescopic section of the electric push rod.

[0015] As a preferred technical solution of the present invention, the moving component includes an actuating motor fixedly installed at the rear side of the device frame. The output shaft of the actuating motor is fixedly connected to the main shaft. A grooved roller is rotatably arranged on the left side inside the device frame. The grooved roller is connected to the main shaft through a belt. A support rod is fixedly installed on the upper part of the water pushing plate in the middle.

[0016] As a preferred technical solution of the present invention, a cam groove is formed on the circumferential surface of the grooved roller. The cam groove is in a ring-closed shape. The upper end of the support rod extends into the cam groove so that the cam groove cooperates with the notch of the support rod.

[0017] As a preferred technical solution of the present invention, the turning component includes a fixing plate fixedly installed at the lower part inside the water pushing plate. A filter cloth is fixedly connected to the front and rear sides of the fixing plate. A sliding plate is slidably arranged in the front and rear directions on the upper part of the fixing plate. The filter cloth is propped up by the upper side of the sliding plate. The width of the sliding plate is greater than that of the fixing plate.

[0018] The beneficial effects of the present invention are as follows: First, the present invention uses a scraper detachably arranged on the rotating pipe fitting to scrape the iron powder adsorbed on the side surface of the magnetic disk. By rotating the rotating pipe fitting, a new scraper can be replaced to contact the magnetic disk, so as to realize the replacement of the scraper without stopping the machine. Moreover, the rotating pipe fitting is arranged in a way that the left side is higher than the right side, and the scraper is fixed on the rotating pipe fitting by sliding connection from left to right, so that the scraper is locked on the rotating pipe fitting under the action of its own gravity, thus simplifying the process of replacing the old scraper with a new one.

[0019] Second, the present invention uses a moving component to drive the water pushing plate to reciprocate back and forth, so that the water pushing plate pushes the wastewater back and forth, so that when the wastewater flows to the side surface of the magnetic disk to the right, it can repeatedly impact on the side surface of the magnetic disk, increasing the contact area between the iron powder in the wastewater and the side surface of the magnetic disk, increasing the adsorption amount of the iron powder in the wastewater by the magnetic disk, and further increasing the recovery effect of the iron powder.

[0020] Third, the present invention uses a turning component to shovel up the iron powder that has sunk to the bottom of the wastewater while reciprocating with the water pushing plate, making the iron powder that has sunk to the bottom of the wastewater float upward, further increasing the contact area between the iron powder in the wastewater and the side surface of the magnetic disk. Moreover, the filter cloth in the turning component that changes the inclination direction according to the moving direction of the water pushing plate can also aggregate the iron powder in the wastewater, so that the aggregated iron powder can collectively move to the side surface of the magnetic disk, thus increasing the recovery effect of the iron powder.

[0021] IV. The present invention uses an adjustment component to adjust the angle between the tangential direction of the disk and the water flow direction according to the flow rate of the wastewater. When the wastewater flow rate is fast, the disk is adjusted so that there is an angle between its tangential direction and the water flow direction, making the side of the disk correspond to the water flow direction, enabling the iron powder in the fast water flow to directly move to the side of the disk, ensuring the contact mechanism between the iron powder and the disk. When the wastewater flow rate is slow, the disk is adjusted so that there is no angle between its tangential direction and the water flow direction, preventing the slow-flowing wastewater from being blocked at the disk position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 is the first overall structural schematic diagram of the present invention.

[0024] Figure 2 is the second overall structural schematic diagram of the present invention.

[0025] Figure 3 is a cross-sectional view of the positional relationship among the device frame, disk, and water pushing plate in the present invention.

[0026] Figure 4 is the structural schematic diagram of the ball cage universal joint, disk, rotating rod, and scraping component in the present invention.

[0027] Figure 5 is the structural schematic diagram of the disk and the scraping component in the present invention.

[0028] Figure 6 is the structural schematic diagram of the rotating pipe fitting, arc-shaped cover plate, and scraping plate in the present invention.

[0029] Figure 7 is the structural schematic diagram of the square rod, water pushing plate, groove roller, support rod, and turning component in the present invention.

[0030] Figure 8 is the state change diagram of the filter cloth being straightened when the sliding plate moves relative to the fixed plate in the present invention.

[0031] In the figure: 1, device frame; 2, chute; 3, magnetic separation mechanism; 4, water pushing mechanism; 31, main shaft; 32, ball cage universal joint; 33, disk; 34, rotating rod; 35, scraping component; 36, adjusting component; 41, square rod; 42, water pushing plate; 43, moving component; 44, turning component; 351, connecting plate frame; 352, rotating pipe fitting; 353, arc-shaped cover plate; 354, scraping plate; 355, locking plug rod; 361, abutting part; 362, angle rod; 363, water blocking plate; 364, control part; 431, actuating motor; 432, groove roller; 433, support rod; 441, fixing plate; 442, filter cloth; 443, sliding plate; 3611, U-shaped plate; 3612, first wheel; 3613, second wheel; 3641, angle sensor; 3642, swinging plate; 3643, synchronous plate; 3644, electric push rod; 4321, cam groove. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention. For those not specified in the embodiments in terms of specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0033] Refer to Figure 1 and Figure 2 , a device for recovering iron powder in steel wastewater, including a device frame 1. A chute 2 is fixedly installed on the upper right side of the device frame 1. A magnetic separation mechanism 3 is arranged on the device frame 1, and a water pushing mechanism 4 for changing the water flow direction is also arranged on the device frame 1.

[0034] When it is necessary to recover the iron powder in the wastewater, the device frame 1 is installed on the upper side of the wastewater tank, so that the wastewater flows from left to right inside the device frame 1. Subsequently, the iron powder in the wastewater is collected by the magnetic separation mechanism 3, and at the same time, the wastewater is pushed back and forth by the water pushing mechanism 4, thereby changing the flow direction of the wastewater, and further increasing the contact area between the iron powder in the wastewater and the magnetic separation mechanism 3, so as to improve the recovery effect of the iron powder.

[0035] Refer to Figure 1 , Figure 2 and Figure 3 , the magnetic separation mechanism 3 includes a main shaft 31 rotatably arranged in the middle of the device frame 1. Disk 33 is arranged at equal intervals in the front-back direction on the main shaft 31 through a ball cage universal joint 32. The water pushing mechanism 4 includes a square rod 41 slidably inserted back and forth on the left side of the device frame 1. Water pushing plates 42 are fixedly installed at equal intervals in the front-back direction on the square rod 41. The water pushing plates 42 are in an arc-shaped structure coaxial with the disk 33. A moving component 43 for driving the water pushing plates 42 to move back and forth is jointly arranged on the device frame 1 and the water pushing plates 42.

[0036] Refer toFigure 2 , Figure 3 and Figure 7 , the moving component 43 includes an actuating motor 431 fixedly installed at the rear side of the device frame 1. The output shaft of the actuating motor 431 is fixedly connected to the main shaft 31. A grooved roller 432 is rotatably arranged on the left side inside the device frame 1. The grooved roller 432 is connected to the main shaft 31 through a belt. A support rod 433 is fixedly installed on the upper part of the water pushing plate 42 in the middle. A cam groove 4321 is formed on the circumferential surface of the grooved roller 432. The cam groove 4321 is in an annular closed shape. The upper end of the support rod 433 extends into the cam groove 4321, so that the cam groove 4321 cooperates with the notch of the support rod 433.

[0037] When the wastewater flows through the inside of the device frame 1, the actuating motor 431 is started to drive the main shaft 31 to rotate, so that the main shaft 31 drives the disk 33 to start rotating through the constant velocity joint 32, that is, the lower part of the disk 33 rotates from right to left. At the same time, the main shaft 31 drives the grooved roller 432 to rotate, so that the grooved roller 432 reciprocally pushes and pulls the support rod 433 back and forth through the cam groove 4321 on it. The support rod 433 drives the corresponding water pushing plate 42 to move synchronously. Since all the water pushing plates 42 are fixedly installed on the square rod 41, all the water pushing plates 42 move back and forth synchronously.

[0038] The water pushing plate 42 that moves back and forth pushes the wastewater flowing to the right back and forth, so that the wastewater surges back and forth while flowing to the right, so that the wastewater drives the iron powder inside it to move synchronously. Furthermore, when the wastewater drives the iron powder to flow to the side position of the disk 33, the iron powder can be pushed to contact the side of the disk 33, increasing the contact opportunity between the iron powder and the disk 33 and improving the recovery effect of the iron powder.

[0039] Refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 , the water pushing mechanism 4 further includes a turning component 44 arranged on the water pushing plate 42. The turning component 44 includes a fixing plate 441 fixedly installed at the lower part inside the water pushing plate 42. A filter cloth 442 is fixedly connected to the front and rear sides of the fixing plate 441. A sliding plate 443 is slidably arranged back and forth on the upper part of the fixing plate 441. The sliding plate 443 propping up the filter cloth 442 through its upper side. The width of the sliding plate 443 is greater than that of the fixing plate 441.

[0040] While the water pushing plate 42 reciprocates back and forth, the water pushing plate 42 drives the fixed plate 441 thereon to move synchronously. The part of the sliding plate 443 wider than the fixed plate 441 is temporarily stationary due to the resistance of the waste water, so that the sliding plate 443 moves in the opposite direction of the movement of the water pushing plate 42 relative to the fixed plate 441, thereby causing the upper side of the sliding plate 443 to push against the filter cloth 442, and making the part of the filter cloth 442 on the side where the sliding plate 443 faces the same direction as the movement direction of the water pushing plate 42 be straightened into an inclined plane.

[0041] Subsequently, when the sliding plate 443 moves to the end of the fixed plate 441, the fixed plate 441 starts to drive the sliding plate 443 to move synchronously, so that the filter cloth 442 shovels up the iron powder that has sunk to the bottom of the waste water through the part that is straightened into an inclined plane, thereby causing the iron powder that has sunk to the bottom of the waste water to float upward, further increasing the contact area between the iron powder in the waste water and the side surface of the magnetic disk 33. And during the movement of the filter cloth 442, part of the waste water can pass through itself, so as to filter and gather the iron powder in the waste water on the outer side surface of the part that is straightened into an inclined plane, enabling the gathered iron powder to move collectively to the side surface of the magnetic disk 33, further enhancing the recovery effect of the iron powder.

[0042] It should be noted that the area of the part of the sliding plate 443 wider than the fixed plate 441 is larger than the area of the filter cloth 442 straightened into an inclined plane, and part of the waste water can pass through the filter cloth 442, so that when the fixed plate 441 moves, the resistance of the waste water to the sliding plate 443 is greater than the resistance of the waste water to the filter cloth 442, thereby enabling the fixed plate 441 to always straighten the filter cloth 442.

[0043] Refer to Figure 1 、 Figure 3 and Figure 4 As shown in

[0044] Refer to Figure 3 and Figure 4 As shown in

[0045] In the initial state, the U-shaped plate 3611 covers the upper part of the disk 33 at the corresponding position, so that the first wheel 3612 abuts against the upper side of the cylindrical surface of the disk 33, and the two groups of second wheels 3613 respectively abut against the front and rear corresponding side surfaces of the disk 33, so that the U-shaped plate 3611 is rotationally connected to the disk 33 at the corresponding position through the first wheel 3612 and the second wheels 3613, thereby enabling the rotating rod 34 to be rotationally connected to the disk 33.

[0046] Refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown in, the magnetic separation mechanism 3 further includes a scraping component 35 arranged on the lower right side of the rotating rod 34. The scraping component 35 includes a connecting plate frame 351 fixedly installed on the right side of the rotating rod 34. Two rotation pipe fittings 352 arranged symmetrically front and back are rotatably arranged at the lower right side of the connecting plate frame 351. Scrapers 354 are arranged at equal intervals along the circumferential direction on the left side of the rotation pipe fitting 352.

[0047] Refer to Figure 4 、 Figure 5 and Figure 6 As shown in, the scraping component 35 further includes arc-shaped covers 353 arranged at equal intervals along the circumferential direction on the left side of the rotation pipe fitting 352. The arc-shaped covers 353 are arranged in a staggered manner with the scrapers 354. The two rotation pipe fittings 352 on the same connecting plate frame 351 are respectively located on the front and rear side surfaces of the disk 33 at the corresponding position. The arc-shaped covers 353 and the scrapers 354 are connected to the rotation pipe fitting 352 in a detachable manner.

[0048] Refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown in, the rotation pipe fitting 352 is arranged along the radial direction of the disk 33, and the rotation pipe fitting 352 is gradually inclined downward from left to right. The scraper 354 is loaded onto the rotation pipe fitting 352 from left to right through a chute fit. The arc-shaped cover 353 is loaded onto the rotation pipe fitting 352 from left to right through the rectangular guide rod on it. There is an included angle between the length direction of the scraper 354 and the radial direction of the rotation pipe fitting 352.

[0049] In the initial state, the side of the scraper 354 away from the rotation pipe fitting 352 it is connected to abuts against the side surface of the disk 33, and one arc-shaped cover 353 adjacent to the upper side of the scraper 354 in contact with the disk 33 is removed. The disk 33 adsorbs the iron powder in the wastewater on its side surface. Subsequently, the rotating disk 33 drives the iron powder on its side surface to the position of the scraper 354 in contact with it, so that the scraper 354 scrapes off the iron powder.

[0050] Since there is an angle between the length direction of the scraping plate 354 and the radial direction of the rotating pipe fitting 352, the scraping plate 354 is not perpendicular to the side surface of the disk 33, and the scraping plate 354 gradually slopes downward in the direction away from the disk 33. As a result, the iron powder passes through the position where the arc-shaped cover plate 353 is not installed on the rotating pipe fitting 352 along the upper side surface of the scraping plate 354 and enters the interior of the rotating pipe fitting 352. Then, the iron powder flows along the rotating pipe fitting 352 to the chute 2, thereby completing the recovery of the iron powder.

[0051] Refer to Figure 5 , two symmetrically arranged locking plug rods 355 are slidably arranged in the front and rear directions at the lower right part of the connecting plate frame 351. A pushing spring is arranged between the two locking plug rods 355 on the same connecting plate frame 351. The rotating pipe fitting 352 is provided with sockets corresponding to the scraping plate 354 one by one along its circumferential direction and for the locking plug rods 355 to insert.

[0052] In the initial state, the pushing spring pushes the locking plug rod 355 to insert into the socket inside the rotating pipe fitting 352 at the corresponding position through its own elastic force, locking the rotating pipe fitting 352 and the connecting plate frame 351 at the corresponding position into a whole, thereby locking the rotation angle of the rotating pipe fitting 352 and enabling the scraping plate 354 to stably scrape the iron powder on the side surface of the disk 33.

[0053] When it is necessary to replace the scraping plate 354 in contact with the disk 33, the operator pulls the locking plug rod 355 to move it out of the socket inside the rotating pipe fitting 352. Subsequently, the operator manually rotates the rotating pipe fitting 352. While the rotating pipe fitting 352 starts to rotate, the external force on the locking plug rod 355 is removed, so that the pushing spring pushes the locking plug rod 355 to abut against the outer side surface of the rotating pipe fitting 352 at the corresponding position through its own elastic force, and the rotating pipe fitting 352 drives the scraping plate 354 thereon to rotate synchronously.

[0054] When the rotating pipe fitting 352 rotates to the position where the next socket corresponds to the locking plug rod 355, the pushing spring pushes the locking plug rod 355 to insert into the socket at the corresponding position through its own elastic force, locking the rotation angle of the rotating pipe fitting 352 again. At this time, the rotating pipe fitting 352 drives a new scraping plate 354 to contact the side surface of the disk 33. Subsequently, the operator manually slides the arc-shaped cover plate 353 from left to right and inserts it into the position where the arc-shaped cover plate 353 is not installed on the rotating pipe fitting 352. Then, the operator manually slides and removes an arc-shaped cover plate 353 adjacent to the upper side of the scraping plate 354 in contact with the disk 33 from right to left, thereby completing the replacement of the scraping plate 354.

[0055] Refer to Figure 1 , Figure 2 and Figure 3, the adjusting assembly 36 further includes an angle rod 362 rotatably arranged on the left side of the device frame 1. A torsion spring is arranged between the angle rod 362 and the device frame 1. A water blocking plate 363 is fixedly installed on the rear side of the lower part of the angle rod 362. A control part 364 for rotating the rotating rod 34 according to the rotation angle of the angle rod 362 is arranged on the upper side of the device frame 1.

[0056] Continue to refer to Figure 1 , Figure 2 and Figure 3 , the control part 364 includes an angle sensor 3641 fixedly installed on the upper side of the device frame 1. The angle sensor 3641 is fixedly connected to the angle rod 362. A swing plate 3642 is fixedly installed on the upper part of the rotating rod 34. A synchronous plate 3643 is jointly hinged on the left side of the swing plate 3642. An electric push rod 3644 is jointly hinged between the synchronous plate 3643 and the device frame 1. The change amount of the rotation angle of the angle rod 362 is proportional to the extension amount of the telescopic section of the electric push rod 3644. The torsion spring is not shown in the figure.

[0057] In the initial state, the torsion spring maintains the rotation angle of the angle rod 362 through its own elastic force, so that the angle rod 362 drives the water blocking plate 363 to be arranged perpendicular to the water flow direction, and the rotation angle of the rotating rod 34 is monitored in real time through the angle sensor 3641, and the angle sensor 3641 transmits the data of its reading to the controller. The controller controls the extension amount of the telescopic section of the electric push rod 3644 according to the change amount of the value of the angle sensor 3641.

[0058] The above-mentioned controller can adopt a single-chip microcomputer or a PLC in the prior art, which will not be elaborated herein, and the controller is not shown in the figure.

[0059] When the flow rate of the wastewater increases, the flow rate of the iron powder in the wastewater increases synchronously, which makes it difficult for the iron powder to be adsorbed on the side surface of the magnetic disk 33 by the magnetic disk 33. At the same time, the fast-flowing wastewater drives the angle rod 362 to increase the rotation angle by pushing the water blocking plate 363, so that the extension amount of the telescopic section of the electric push rod 3644 increases. The electric push rod 3644 drives all the swing plates 3642 to deflect synchronously by pushing the synchronous plate 3643. The swing plate 3642 drives the magnetic disk 33 to deflect synchronously through the rotating rod 34, so that the included angle between the tangent direction of the magnetic disk 33 and the water flow direction increases, so that the wastewater drives the iron powder therein to directly impact on the side surface of the magnetic disk 33, thereby ensuring the recovery effect of the magnetic disk 33 on the iron powder.

[0060] On the contrary, when the flow rate of the wastewater slows down, the torsion spring pushes the angle rod 362 to rotate back to its original position, so that the included angle between the tangent direction of the magnetic disk 33 and the water flow direction decreases, so that the wastewater can flow more smoothly through the magnetic disk 33, preventing the wastewater from being blocked.

[0061] When recovering iron powder in wastewater, the present invention further includes the following steps: First step, install the device frame 1 on the upper side of the wastewater tank, so that the wastewater flows from left to right inside the device frame 1. Start the actuating motor 431 to drive the magnetic disk 33 to rotate, and at the same time make the water-pushing plate 42 push the wastewater to surge back and forth, increasing the contact opportunity between the iron powder and the magnetic disk 33 and improving the recovery effect of the iron powder.

[0062] Second step, the water-pushing plate 42 drives the fixed plate 441 thereon to move synchronously. The resistance of the wastewater pushes the sliding plate 443 to straighten the filter cloth 442 into an inclined plane, so that the filter cloth 442 shovels up the iron powder that has sunk to the bottom of the wastewater, thereby increasing the contact area between the iron powder in the wastewater and the side surface of the magnetic disk 33. Moreover, the filter cloth 442 can filter and gather the iron powder in the wastewater, so that the gathered iron powder can move collectively to the side surface of the magnetic disk 33, further increasing the recovery effect of the iron powder.

[0063] Third step, the rotating magnetic disk 33 drives the iron powder on its side to the position of the scraping plate 354 in contact with it, so that the scraping plate 354 scrapes off the iron powder. The iron powder passes through the position where the arc-shaped cover plate 353 is not installed on the rotating pipe fitting 352 along the upper side surface of the scraping plate 354 and enters the inside of the rotating pipe fitting 352, and then the iron powder flows along the rotating pipe fitting 352 to the chute 2, thus completing the recovery of the iron powder.

[0064] Fourth step, the operator pulls the locking plug 355 to move out of the socket inside the rotating pipe fitting 352, and then the operator manually rotates the rotating pipe fitting 352 to the position where the next socket corresponds to the locking plug 355, so that the rotating pipe fitting 352 drives a new scraping plate 354 to contact the side surface of the magnetic disk 33.

[0065] Fifth step, the operator manually slides the arc-shaped cover plate 353 from left to right and inserts it into the position on the rotating pipe fitting 352 where the arc-shaped cover plate 353 is not installed. Then the operator manually slides and removes an arc-shaped cover plate 353 adjacent to the upper side of the scraping plate 354 in contact with the magnetic disk 33 from right to left, thereby completing the replacement of the scraping plate 354.

[0066] Sixth step, control the extension amount of the telescopic section of the electric push rod 3644 according to the change amount of the value of the angle sensor 3641. When the flow rate of the wastewater increases, the included angle between the tangential direction of the magnetic disk 33 and the water flow direction increases to ensure the recovery effect of the magnetic disk 33 on the iron powder. When the flow rate of the wastewater slows down, the torsion spring pushes the angle rod 362 to rotate and reset, so that the included angle between the tangential direction of the magnetic disk 33 and the water flow direction decreases, enabling the wastewater to flow more smoothly through the magnetic disk 33 and preventing the wastewater from being blocked.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. An iron powder recovery device for steel wastewater, comprising a device frame (1), and a chute (2) is fixedly installed on the upper part of the right side of the device frame (1), characterized in that, A magnetic separation mechanism (3) is provided on the device frame (1), and a water pushing mechanism (4) for changing the water flow direction is also provided on the device frame (1); The magnetic separation mechanism (3) includes a main shaft (31) rotatably arranged in the middle of the device frame (1). Disk magnets (33) are arranged on the main shaft (31) at equal intervals in the front-rear direction through a constant velocity joint (32). Rotating rods (34) corresponding to the disk magnets (33) one by one are arranged on the upper part of the device frame (1) at equal intervals in the front-rear direction. A scraping component (35) for scraping the two side surfaces of the disk magnet (33) is arranged on the lower right side of the rotating rod (34). The magnetic separation mechanism (3) also includes an adjustment component (36) for rotating the rotation direction of the disk magnet (33); The water pushing mechanism (4) includes a square rod (41) slidably inserted in the left side of the device frame (1) in the front-rear direction. Water pushing plates (42) are fixedly installed on the square rod (41) at equal intervals in the front-rear direction. The water pushing plates (42) are in an arc structure coaxial with the disk magnet (33). A moving component (43) for driving the water pushing plates (42) to reciprocate back and forth is arranged on both the device frame (1) and the water pushing plates (42). A turning component (44) for turning up the iron powder at the bottom of the water flow is arranged on the water pushing plates (42); The scraping component (35) includes a connecting plate frame (351) fixedly installed on the right side of the rotating rod (34). Two rotation pipe fittings (352) arranged symmetrically in the front-rear direction are rotatably arranged at the lower right side of the connecting plate frame (351). Scraping plates (354) are arranged on the left side of the rotation pipe fitting (352) at equal intervals along its circumference.

2. The iron powder recovery device for steel wastewater according to claim 1, characterized in that, The scraping component (35) also includes arc-shaped covers (353) arranged on the left side of the rotation pipe fitting (352) at equal intervals along its circumference. The arc-shaped covers (353) and the scraping plates (354) are arranged in a staggered manner. The two rotation pipe fittings (352) on the same connecting plate frame (351) are respectively located on the front and rear side surfaces of the corresponding disk magnet (33). The arc-shaped covers (353) and the scraping plates (354) are connected to the rotation pipe fitting (352) in a detachable manner.

3. The iron powder recovery device for steel wastewater according to claim 2, characterized in that, The rotation pipe fitting (352) is arranged along the radial direction of the disk magnet (33), and the rotation pipe fitting (352) gradually inclines downward from left to right. The scraping plate (354) is loaded onto the rotation pipe fitting (352) from left to right through a sliding groove fit. The arc-shaped cover (353) is loaded onto the rotation pipe fitting (352) from left to right through the rectangular guide rod on it. The length direction of the scraping plate (354) forms an angle with the radial direction of the rotation pipe fitting (352).

4. The iron powder recovery device for steel wastewater according to claim 2, characterized in that, Two locking insertion rods (355) arranged symmetrically in the front-rear direction are slidably arranged at the lower right side of the connecting plate frame (351) in the front-rear direction. A pushing spring is arranged between the two locking insertion rods (355) on the same connecting plate frame (351). Sockets corresponding to the scraping plates (354) one by one and for the locking insertion rods (355) to insert are arranged on the rotation pipe fitting (352) at equal intervals along its circumference.

5. The iron powder recovery device for steel wastewater according to claim 1, characterized in that, The adjustment assembly (36) comprises a supporting portion (361) for connecting the magnetic disk (33) and fixedly mounted on the lower end of the rotating rod (34); an angle rod (362) is rotatably mounted on the left side of the device frame (1); a torsion spring is arranged between the angle rod (362) and the device frame (1); a water blocking plate (363) is fixedly mounted on the lower rear side of the angle rod (362); and a control portion (364) for rotating the rotating rod (34) according to the rotation angle of the angle rod (362) is arranged on the upper side of the device frame (1).

6. The iron powder recovery device for steel wastewater according to claim 5, characterized in that, The abutting portion (361) comprises a convex plate (3611) fixedly mounted on the lower end of the rotating rod (34); two first wheels (3612) symmetrically arranged left and right are rotatably arranged in the middle of the inner part of the convex plate (3611); two groups of second wheels (3613) symmetrically arranged along the circumference of the magnetic disk (33) are rotatably arranged in the inner part of the convex plate (3611).

7. An iron powder recovery device for steel wastewater according to claim 5, characterized in that, The control unit (364) comprises an angle sensor (3641) fixedly mounted on the upper side of the device frame (1); the angle sensor (3641) is fixedly connected to the angle rod (362); a swing plate (3642) is fixedly mounted on the upper part of the rotating rod (34); a synchronous plate (3643) is hingedly connected to the left side of the swing plate (3642); an electric push rod (3644) is hingedly connected between the synchronous plate (3643) and the device frame (1); and a change in the rotation angle of the angle rod (362) is proportional to the extension amount of the telescopic section of the electric push rod (3644).

8. The iron powder recovery device for steel wastewater according to claim 1, characterized in that, The moving assembly (43) comprises an actuator motor (431) fixedly mounted on the rear side of the device frame (1); the output shaft of the actuator motor (431) is fixedly connected to the main shaft (31); a groove roller (432) is rotatably arranged on the left side inside the device frame (1); the groove roller (432) is connected to the main shaft (31) via a belt; and a support rod (433) is fixedly mounted on the upper part of the water pushing plate (42) in the middle.

9. The iron powder recovery device for steel wastewater according to claim 8, characterized in that, A cam groove (4321) is provided on the circumferential surface of the groove roller (432), the cam groove (4321) is in a closed annular shape, and the upper end of the support rod (433) extends into the cam groove (4321), so that the cam groove (4321) cooperates with the groove of the support rod (433).

10. The iron powder recovery device for steel wastewater according to claim 1, wherein, The flip assembly (44) comprises a fixed plate (441) fixedly mounted on the lower inner side of the water pushing plate (42); the fixed plate (441) is fixedly connected to a filter cloth (442) via its front and rear sides; a sliding plate (443) is slidably arranged on the upper part of the fixed plate (441); the sliding plate (443) supports the filter cloth (442) via its upper side; and the width of the sliding plate (443) is greater than that of the fixed plate (441).

Images