Iron powder recovery device in steel wastewater

Abstract

The application relates to the field of metal recovery devices, in particular to a steel wastewater iron powder recovery device, which comprises 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, a water pushing mechanism for changing the water flow direction is further arranged on the device frame, the device adopts a rotating rotating pipe mode to replace the new scraper in contact with the magnetic disc, so that the scraper can be replaced without stopping the machine, the scraper is locked on the rotating pipe through the gravity of the scraper, the process of replacing the old scraper is simplified, the moving assembly can drive the water pushing plate to reciprocate forward and backward, the water pushing plate pushes the wastewater to reciprocate forward and backward and impact on the side surface of the magnetic disc, the contact opportunity of the iron powder in the wastewater and the side surface of the magnetic disc is increased, the adsorption amount of the iron powder in the wastewater by the magnetic disc is increased, and the recovery effect of the iron powder is further increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal recovery device, specifically is a kind of iron powder recovery device in steel wastewater. BACKGROUND

[0002] In order to save mineral resources, reduce production cost, prevent environmental pollution, the iron powder in steel wastewater needs to be recovered, and wet magnetic separator is generally used in industry to recover iron powder from steel wastewater. The wet magnetic separator is composed of a main machine, a magnetic disk, a scraper, a chute and a water flushing pipe. When working, the main machine drives multiple magnetic disks to rotate. When the wastewater passes under the magnetic disk, the magnetic disk adsorbs the iron powder in the wastewater on its side. Then the rotating magnetic disk drives the iron powder to the position of the scraper, so that the scraper scrapes the iron powder on the magnetic disk to the chute. At the same time, the water flushing pipe flushes water to the side of the magnetic disk, so that the water flow further washes the iron powder on the side of the magnetic disk to the chute.

[0003] However, the scraper of the existing wet magnetic separator will be worn after a long time, which will cause a gap between the scraper and the magnetic disk, thereby reducing the scraping effect of the iron powder. Therefore, the scraper needs to be replaced regularly. The existing wet magnetic separator needs to be stopped when replacing the scraper, thereby reducing the recovery efficiency of the iron powder, and the process of replacing the scraper is relatively complicated.

[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 disk, so that the area of contact between the iron powder in the wastewater and the side of the magnetic disk is small, thereby some iron powder in the wastewater cannot be adsorbed by the magnetic disk, which reduces the recovery effect of the iron powder. SUMMARY

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: an iron powder recovery device in steel wastewater, comprising a device frame, a chute is fixedly installed on the right side of the upper part of the device frame, a magnetic separation mechanism is arranged on the device frame, and a water pushing mechanism for changing the direction of water flow is further arranged on the device frame.

[0006] The magnetic separation mechanism comprises a main shaft rotatably arranged in the middle of the device frame, a plurality of magnetic disks are arranged on the main shaft through a cross roller bearing in the front-rear direction at equal intervals, a rotating rod corresponding to each magnetic disk is arranged on the upper part of the device frame in the front-rear direction at equal intervals, a scraping assembly for scraping the two sides of the magnetic disk is arranged on the lower part of the right side of the rotating rod, and the magnetic separation mechanism further comprises an adjusting assembly for adjusting the rotating direction of the magnetic disk.

[0007] The water pushing mechanism comprises a square rod slidingly inserted into the left side of the device frame, a plurality of water pushing plates are fixedly installed on the square rod in the front-rear direction at equal intervals, the water pushing plates are in the form of arc structure coaxial with the magnetic disk, a moving assembly for driving the water pushing plates to move back and forth is arranged on the device frame and the water pushing plates, and a turning assembly for turning the iron powder at the bottom of the water flow upward is arranged on the water pushing plate.

[0008] The scraping assembly comprises a connecting plate frame fixedly installed on the right side of the rotating rod, two rotating pipes symmetrically arranged in front and back are rotatably arranged on the lower right side of the connecting plate frame, and scraping plates are equidistantly arranged on the left side of the rotating pipes along the circumferences of the rotating pipes.

[0009] As a preferred technical scheme of the present application, the scraping assembly further comprises arc-shaped cover plates equidistantly arranged on the left side of the rotating pipes along the circumferences of the rotating pipes, the arc-shaped cover plates are arranged in a staggered manner with the scraping plates, the two rotating pipes on the same connecting plate frame are respectively located on the front and back sides of the corresponding magnetic discs, and the arc-shaped cover plates are connected with the rotating pipes in a detachable manner.

[0010] As a preferred technical scheme of the present application, the rotating pipes are arranged along the radial directions of the magnetic discs, and the rotating pipes gradually incline downward from left to right, the scraping plates are loaded on the rotating pipes from left to right through the cooperation of the sliding grooves, the arc-shaped cover plates are loaded on the rotating pipes from left to right through the rectangular guide rods thereon, and the length direction of the scraping plates and the radial direction of the rotating pipes form an included angle.

[0011] As a preferred technical scheme of the present application, two lock insertion rods symmetrically arranged in front and back are slidably arranged on the lower right side of the connecting plate frame, a push spring is arranged between the two lock insertion rods on the same connecting plate frame, and a plurality of insertion ports corresponding to the scraping plates and for the lock insertion rods to be inserted are equidistantly arranged on the rotating pipes along the circumferences of the rotating pipes.

[0012] As a preferred technical scheme of the present application, the adjusting assembly comprises an abutting portion for connecting the magnetic disc, which is fixedly installed on the lower end of the rotating rod, 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 installed 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 scheme of the present application, the abutting portion comprises a H-shaped plate fixedly installed on the lower end of the rotating rod, two first wheels symmetrically arranged in left and right are rotatably arranged in the middle of the inner portion of the H-shaped plate, and two groups of second wheels equidistantly arranged along the circumference of the magnetic disc are rotatably arranged on the inner portion of the H-shaped plate symmetrically in front and back.

[0014] As a preferred technical scheme of the present application, the control portion comprises an angle sensor fixedly installed on the upper side of the device frame, the angle sensor is fixedly connected with the angle rod, a swing plate is fixedly installed on the upper portion of the rotating rod, a synchronous plate is commonly hinged on the left side of the swing plate, an electric push rod is commonly hinged between the synchronous plate and the device frame, and the change amount of the rotation angle of the angle rod is proportional to the extension amount of the extension section of the electric push rod.

[0015] As a preferred technical scheme of the present application, the moving assembly comprises an execution motor fixedly installed at the rear side of the device frame, the output shaft of the execution motor is fixedly connected with the main shaft, a groove roller is rotatably arranged at the left side in the device frame, the groove roller is connected with the main shaft through a belt, and a supporting rod is fixedly installed at the upper portion of the middle water pushing plate.

[0016] As a preferred technical scheme of the present application, a cam groove is formed in the circumferential surface of the groove roller, the cam groove is annularly closed, and the upper end of the supporting rod extends into the cam groove, so that the cam groove cooperates with the slot of the supporting rod.

[0017] As a preferred technical scheme of the present application, the turning assembly comprises a fixed plate fixedly installed at the inner lower portion of the water pushing plate, a filter cloth is fixedly connected to the front and rear sides of the fixed plate, a sliding plate is slidably arranged at the upper portion of the fixed plate, the filter cloth is supported by the upper side of the sliding plate, and the width of the sliding plate is greater than that of the fixed plate.

[0018] The present application has the following advantages: 1. The scraper provided on the rotating pipe in a detachable manner can scrape off the iron powder adsorbed on the side of the magnetic disc, and the new scraper can be replaced to contact the magnetic disc by rotating the rotating pipe, so that the scraper can be replaced without stopping the machine, and the rotating pipe is arranged in a left-high and right-low manner, and the scraper is fixed on the rotating pipe by sliding connection from left to right, so that the scraper is locked on the rotating pipe under the action of its own gravity, thereby simplifying the process of replacing the old scraper.

[0019] 2. The moving assembly can drive the water pushing plate to move back and forth, so that the water pushing plate can push the wastewater back and forth, so that when the wastewater flows to the side of the magnetic disc, it can hit the side of the magnetic disc back and forth, increasing the contact area of the iron powder in the wastewater with the side of the magnetic disc, increasing the adsorption amount of the magnetic disc to the iron powder in the wastewater, and further increasing the recovery effect of the iron powder.

[0020] 3. The turning assembly can shovel the iron powder sunk to the bottom of the wastewater while moving back and forth with the water pushing plate, so that the iron powder sunk to the bottom of the wastewater floats upward, further increasing the contact area of the iron powder in the wastewater with the side of the magnetic disc, and the filter cloth in the turning assembly can also gather the iron powder in the wastewater by changing the inclination direction according to the moving direction of the water pushing plate, so that the gathered iron powder can move to the side of the magnetic disc collectively, thereby increasing the recovery effect of the iron powder.

[0021] Fourth, the adjusting assembly can adjust the included angle between the tangent direction of the magnetic disc and the water flow direction according to the flow speed of the wastewater, when the wastewater flow speed is fast, the magnetic disc is adjusted to have an included angle between the tangent direction and the water flow direction, so that the side surface of the magnetic disc corresponds to the water flow direction, so that the iron powder in the fast water flow can be directly moved to the side surface of the magnetic disc, ensuring the contact between the iron powder and the magnetic disc, when the wastewater flow speed is slow, the tangent direction of the magnetic disc is adjusted to have no included angle with the water flow direction, preventing the wastewater with slow flow speed from being blocked at the position of the magnetic disc. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings and examples.

[0023] Figure 1 is the first overall structure schematic diagram of the application.

[0024] Figure 2 is the second overall structure schematic diagram of the application.

[0025] Figure 3 is the position relation of the device frame, the magnetic disc and the water pushing plate in the application.

[0026] Figure 4 is the structure schematic diagram of the spherical cage universal joint, the magnetic disc, the rotating rod and the material scraping assembly in the application.

[0027] Figure 5 is the structure schematic diagram of the magnetic disc and the material scraping assembly in the application.

[0028] Figure 6 is the structure schematic diagram of the rotating pipe fitting, the arc-shaped cover plate and the scraper in the application.

[0029] Figure 7 is the structure schematic diagram of the square rod, the water pushing plate, the groove roller, the supporting rod and the turning assembly in the application.

[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 application.

[0031] In the figure: 1, device frame; 2, chute; 3, magnetic separation mechanism; 4, water pushing mechanism; 31, main shaft; 32, ball cage type universal joint; 33, magnetic disc; 34, rotating rod; 35, scraping assembly; 36, adjusting assembly; 41, square rod; 42, water pushing plate; 43, moving assembly; 44, turning assembly; 351, connecting plate frame; 352, rotating pipe; 353, arc cover plate; 354, scraper; 355, locking plug; 361, abutting part; 362, angle rod; 363, water blocking plate; 364, control part; 431, execution motor; 432, groove roller; 433, support rod; 441, fixed plate; 442, filter cloth; 443, sliding plate; 3611, L-shaped plate; 3612, No. 1 wheel; 3613, No. 2 wheel; 3641, angle sensor; 3642, swing plate; 3643, synchronization plate; 3644, electric push rod; 4321, cam groove. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below. The embodiments described below are exemplary only, and are not to be construed as limiting the present application. If a specific technique or condition is not mentioned in the embodiments, the technique or condition described in the literature in the art or according to the product manual is used.

[0033] Referring to Figure 1 and Figure 2 , a device for recovering iron powder in steel wastewater includes 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 direction of water flow is further 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 in the device frame 1, and then the iron powder in the wastewater is collected by the magnetic separation mechanism 3, and at the same time the wastewater is reciprocally pushed back and forth by the water pushing mechanism 4, so as to change the direction of water flow, thereby increasing the area of contact between the iron powder in the wastewater and the magnetic separation mechanism 3, so as to increase the recovery effect of the iron powder.

[0035] Referring 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, and magnetic discs 33 are arranged on the main shaft 31 at equal intervals in the front-rear direction through a ball cage type universal joint 32, the water pushing mechanism 4 includes square rods 41 slidably inserted into the left side of the device frame 1, and water pushing plates 42 are fixedly installed on the square rods 41 at equal intervals in the front-rear direction, the water pushing plates 42 are in an arc structure coaxial with the magnetic discs 33, and the device frame 1 and the water pushing plates 42 are jointly provided with a moving assembly 43 for driving the water pushing plates 42 to reciprocally move back and forth.

[0036] Referring toFigure 2 、 Figure 3 and Figure 7 The moving assembly 43 comprises an executing motor 431 fixedly installed at the rear side of the device frame 1, an output shaft of the executing motor 431 is fixedly connected with the main shaft 31, a groove roller 432 is rotatably arranged at the left side inside the device frame 1, the groove roller 432 is connected with the main shaft 31 through a belt, a supporting rod 433 is fixedly installed at the upper portion of the water pushing plate 42, a cam groove 4321 is formed on the circumferential surface of the groove roller 432, the cam groove 4321 is annularly closed, the upper end of the supporting rod 433 extends into the cam groove 4321, so that the cam groove 4321 cooperates with the notch of the supporting rod 433.

[0037] When the wastewater flows through the inside of the device frame 1, the executing motor 431 is started to drive the main shaft 31 to rotate, so that the main shaft 31 drives the magnetic disc 33 to start rotating through the ball cage type universal joint 32, that is, the lower portion of the magnetic disc 33 rotates from right to left, at the same time, the main shaft 31 drives the groove roller 432 to rotate, so that the groove roller 432 reciprocatingly pushes and pulls the supporting rod 433 through the cam groove 4321 thereon, the supporting rod 433 drives the water pushing plate 42 at the corresponding position to move synchronously, because all the water pushing plates 42 are fixedly installed on the square rod 41, so that all the water pushing plates 42 reciprocatingly move forward and backward synchronously.

[0038] The water pushing plate 42 reciprocatingly moving forward and backward reciprocatingly pushes the wastewater flowing to the right, so that the wastewater surges forward and backward while flowing to the right, thereby making the wastewater drive the iron powder inside to move synchronously, and further making the wastewater drive the iron powder to flow to the right to the side of the magnetic disc 33, so as to push the iron powder to contact with the side of the magnetic disc 33, increasing the contact opportunity of the iron powder with the magnetic disc 33, and improving the recovery effect of the iron powder.

[0039] Referring to Figure 2 、 Figure 3 、 Figure 7 and Figure 8 The water pushing mechanism 4 further comprises a turning assembly 44 arranged on the water pushing plate 42, the turning assembly 44 comprises a fixed plate 441 fixedly installed at the lower portion of the inner side of the water pushing plate 42, a filter cloth 442 is fixedly connected with the front and rear sides of the fixed plate 441, a sliding plate 443 is slidably arranged on the upper portion of the fixed plate 441, the filter cloth 442 is supported by the sliding plate 443 through the upper side thereof, and the width of the sliding plate 443 is greater than that of the fixed plate 441.

[0040] The fixed plate 441 moves synchronously with the pusher plate 42, and the part of the sliding plate 443 wider than the fixed plate 441 is temporarily kept still by the resistance of the wastewater, so that the sliding plate 443 moves reversely relative to the fixed plate 441, and the upper side of the sliding plate 443 pushes the filter cloth 442, and the part of the filter cloth 442 on the sliding plate 443 is straightened into an inclined plane.

[0041] Then the sliding plate 443 moves to the end of the fixed plate 441, and the fixed plate 441 starts to move the sliding plate 443 synchronously, so that the filter cloth 442 lifts the iron powder at the bottom of the wastewater through the part straightened into an inclined plane, so that the iron powder at the bottom of the wastewater floats upward, thereby increasing the area of the iron powder in the wastewater contacting the side of the magnetic disk 33, and the filter cloth 442 can pass a part of the wastewater during movement, so as to filter the iron powder in the wastewater and gather on the outside of the part straightened into an inclined plane, so that the gathered iron powder can move to the side of the magnetic disk 33 collectively, further increasing 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 greater than the area of the filter cloth 442 straightened into an inclined plane, and a part of the wastewater can pass through the filter cloth 442, so that when the fixed plate 441 moves, the resistance of the wastewater to the sliding plate 443 is greater than the resistance of the wastewater to the filter cloth 442, so that the fixed plate 441 can always straighten the filter cloth 442.

[0043] Referring to Figure 1 , Figure 3 and Figure 4 , the upper part of the device frame 1 is provided with rotating rods 34 corresponding to the magnetic disks 33 in the front and rear direction, and the magnetic selection mechanism 3 further comprises an adjusting assembly 36 for adjusting the rotating direction of the magnetic disk 33, and the adjusting assembly 36 comprises a abutting part 361 for connecting the magnetic disk 33 fixedly installed at the lower end of the rotating rod 34.

[0044] Referring to Figure 3 and Figure 4 , the abutting part 361 comprises a L-shaped plate 3611 fixedly installed at the lower end of the rotating rod 34, and the inside of the L-shaped plate 3611 is provided with two symmetrical first wheels 3612 arranged left and right, and the inside of the L-shaped plate 3611 is provided with two groups of second wheels 3613 arranged at equal intervals along the circumference of the magnetic disk 33.

[0045] In the initial state, the L-shaped plate 3611 covers the upper part of the corresponding magnetic disc 33, so that the first wheel 3612 abuts on the upper side of the cylindrical surface of the magnetic disc 33, and the two groups of second wheels 3613 abut on the corresponding front and rear sides of the magnetic disc 33, so that the L-shaped plate 3611 is rotationally connected with the corresponding magnetic disc 33 through the first wheel 3612 and the second wheel 3613, thereby rotationally connecting the rotating rod 34 with the magnetic disc 33.

[0046] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the magnetic selection mechanism 3 further comprises a scraping assembly 35 arranged at the lower right side of the rotating rod 34, the scraping assembly 35 comprising a connecting plate frame 351 fixedly installed at the right side of the rotating rod 34, two front and rear symmetrical arranged rotating pipe fittings 352 rotationally arranged at the lower right side of the connecting plate frame 351, and scrapers 354 equidistantly arranged at the left side of the rotating pipe fittings 352 along the circumferential direction thereof.

[0047] Referring to Figure 4 , Figure 5 and Figure 6 , the scraping assembly 35 further comprises arc-shaped cover plates 353 equidistantly arranged at the left side of the rotating pipe fittings 352 along the circumferential direction thereof, the arc-shaped cover plates 353 being arranged in a staggered manner with the scrapers 354, the two rotating pipe fittings 352 on the same connecting plate frame 351 being respectively located at the front and rear sides of the corresponding magnetic disc 33, and the arc-shaped cover plates 353 and the scrapers 354 being connected with the rotating pipe fittings 352 in a detachable manner.

[0048] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the rotating pipe fittings 352 are arranged along the radial direction of the magnetic disc 33, and the rotating pipe fittings 352 gradually incline downward from left to right, the scrapers 354 are loaded into the rotating pipe fittings 352 from left to right through the sliding groove cooperation, the arc-shaped cover plates 353 are loaded into the rotating pipe fittings 352 from left to right through the rectangular guide rods thereon, and the length direction of the scrapers 354 and the radial direction of the rotating pipe fittings 352 form an included angle.

[0049] In the initial state, the scrapers 354 abut on the side surface of the magnetic disc 33 away from the rotating pipe fittings 352 connected therewith, and one arc-shaped cover plate 353 adjacent to the upper side of the scraper 354 in contact with the magnetic disc 33 is removed, the magnetic disc 33 adsorbs the iron powder in the waste water on the side surface thereof, and then the rotating magnetic disc 33 drives the iron powder on the side surface thereof to the position of the scraper 354 in contact therewith, so that the scraper 354 scrapes off the iron powder.

[0050] Since the length direction of the scraper 354 is at an angle with the radial direction of the rotating pipe 352, the scraper 354 is not perpendicular to the side surface of the magnetic disc 33, and the scraper 354 gradually inclines downward in the direction away from the magnetic disc 33, so that the iron powder passes through the position of the rotating pipe 352 where the arc-shaped cover plate 353 is not installed, enters the inside of the rotating pipe 352 along the upper side surface of the scraper 354, and then flows along the rotating pipe 352 to the chute 2, thereby completing the recycling of the iron powder.

[0051] Referring to Figure 5 , the two front and rear symmetrically arranged locking insertion rods 355 are slidably arranged on the right lower part of the connecting plate frame 351, a pushing spring is arranged between the two locking insertion rods 355 on the same connecting plate frame 351, and the rotating pipe 352 is provided with insertion ports corresponding to the scrapers 354 and for the locking insertion rods 355 to be inserted at equal intervals in the circumferential direction.

[0052] In the initial state, the pushing spring pushes the locking insertion rod 355 to be inserted into the insertion port of the rotating pipe 352 at the corresponding position by the elastic force of the pushing spring, locks the rotating pipe 352 and the connecting plate frame 351 at the corresponding position as a whole, locks the rotation angle of the rotating pipe 352, and enables the scraper 354 to stably scrape the iron powder on the side surface of the magnetic disc 33.

[0053] When it is necessary to replace the scraper 354 in contact with the magnetic disc 33, the operator pulls the locking insertion rod 355 to move out of the insertion port of the rotating pipe 352, then manually rotates the rotating pipe 352, and when the rotating pipe 352 starts to rotate, removes the external force on the locking insertion rod 355, so that the pushing spring pushes the locking insertion rod 355 to abut against the outer side surface of the rotating pipe 352 at the corresponding position by the elastic force of the pushing spring, and the rotating pipe 352 drives the scraper 354 thereon to rotate synchronously.

[0054] When the rotating pipe 352 rotates to the position where the next insertion port corresponds to the locking insertion rod 355, the pushing spring pushes the locking insertion rod 355 to be inserted into the insertion port at the corresponding position by the elastic force of the pushing spring, and locks the rotation angle of the rotating pipe 352 again. At this time, the rotating pipe 352 drives a new scraper 354 to be in contact with the side surface of the magnetic disc 33, then the operator manually slides the arc-shaped cover plate 353 from left to right and inserts it into the position of the rotating pipe 352 where the arc-shaped cover plate 353 is not installed, then the operator manually slides and removes the arc-shaped cover plate 353 adjacent to the upper side of the scraper 354 in contact with the magnetic disc 33 from right to left, thereby completing the replacement of the scraper 354.

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

[0056] Continuing to refer to Figure 1 、 Figure 2 and Figure 3 , the control part 364 comprises an angle sensor 3641 fixedly arranged on the upper side of the device frame 1, the angle sensor 3641 is fixedly connected with the angle lever 362, a swing plate 3642 is fixedly arranged on the upper part of the rotating lever 34, a synchronous plate 3643 is hingedly arranged on the left side of the swing plate 3642, an electric push rod 3644 is hingedly arranged between the synchronous plate 3643 and the device frame 1, the change amount of the rotation angle of the angle lever 362 is proportional to the extension amount of the extension section of the electric push rod 3644, and the torsion spring is not shown in the figure.

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

[0058] The controller can adopt a single-chip microcomputer or a PLC in the prior art, which will not be described 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 also increases synchronously, which makes it difficult for the iron powder to be adsorbed on the side surface of the magnetic disc 33, and the wastewater flowing at a high speed drives the rotation angle of the angle lever 362 to increase by pushing the water blocking plate 363, so that the extension amount of the extension 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 plates 3642 drive the magnetic disc 33 to deflect synchronously by the rotating lever 34, so that the included angle between the tangent direction of the magnetic disc 33 and the water flow direction increases, thereby making the iron powder in the wastewater directly impact on the side surface of the magnetic disc 33, and further ensuring the recycling effect of the magnetic disc 33 on the iron powder.

[0060] Conversely, when the flow rate of the wastewater decreases, the torsion spring drives the angle lever 362 to rotate to reset, so that the included angle between the tangent direction of the magnetic disc 33 and the water flow direction decreases, so that the wastewater can flow more smoothly through the magnetic disc 33, and the wastewater is prevented from being blocked.

[0061] The application further comprises the following steps when recovering iron powder in wastewater: first, installing 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, starting the motor 431 to drive the magnetic disk 33 to rotate, and at the same time, the water plate 42 pushes the wastewater to move back and forth, increasing the contact opportunity of the iron powder with the magnetic disk 33 and improving the recovery effect of the iron powder.

[0062] Second, the fixed plate 441 on the water plate 42 moves synchronously, the resistance of the wastewater drives the sliding plate 443 to straighten the filter cloth 442 into an inclined plane, so that the filter cloth 442 shovels the iron powder sinking to the bottom of the wastewater, further increasing the contact area of the iron powder in the wastewater with the side of the magnetic disk 33, and the filter cloth 442 can filter and gather the iron powder in the wastewater, so that the iron powder gathered together can move to the side of the magnetic disk 33 collectively, further improving the recovery effect of the iron powder.

[0063] Third, the rotating magnetic disk 33 drives the iron powder on its side to the position of the scraper 354 in contact with it, so that the scraper 354 scrapes off the iron powder, which passes through the position of the rotating pipe 352 without the arc-shaped cover plate 353 on the upper side of the scraper 354 into the inside of the rotating pipe 352, and then flows along the rotating pipe 352 to the chute 2, thereby completing the recovery of the iron powder.

[0064] Fourth, the operator pulls the locking rod 355 to move out of the socket of the rotating pipe 352, and then manually rotates the rotating pipe 352 to the position corresponding to the locking rod 355 at the next socket, so that the rotating pipe 352 drives a new scraper 354 to contact the side of the magnetic disk 33.

[0065] Fifth, the operator manually slides the arc-shaped cover plate 353 from left to right and inserts it into the position of the rotating pipe 352 without the arc-shaped cover plate 353, and then the operator manually slides the arc-shaped cover plate 353 adjacent to the upper side of the scraper 354 in contact with the magnetic disk 33 from right to left and removes it, thereby completing the replacement of the scraper 354.

[0066] Sixth, the extension amount of the telescopic section of the electric push rod 3644 is controlled according to the change amount of the value of the angle sensor 3641, so that when the flow rate of the wastewater increases, the angle between the tangent direction of the magnetic disk 33 and the flow direction of the water increases, ensuring the recovery effect of the magnetic disk 33 on the iron powder, and when the flow rate of the wastewater decreases, the torsional spring drives the angle rod 362 to rotate and reset, so that the angle between the tangent direction of the magnetic disk 33 and the flow direction of the water decreases, so that the wastewater can flow more smoothly through the magnetic disk 33, preventing the wastewater from being blocked.

[0067] Although the embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are merely exemplary, and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made thereto without departing from the scope of the present application.

Claims

1. A device for recovering iron powder from steel wastewater, comprising a device frame (1), a chute (2) being fixedly installed on the upper right side of the device frame (1), characterized in that, The device frame (1) is provided with a magnetic separation mechanism (3), and the device frame (1) is also provided with a water pushing mechanism (4) for changing the direction of water flow; The magnetic separation mechanism (3) comprises a main shaft (31) rotatably arranged in the middle of the device frame (1), a plurality of magnetic disks (33) are arranged on the main shaft (31) at equal intervals in the front-rear direction through a ball cage type universal joint (32), a plurality of rotating rods (34) corresponding to the magnetic disks (33) are arranged at equal intervals in the front-rear direction on the upper portion of the device frame (1), a scraping assembly (35) for scraping the two side surfaces of the magnetic disk (33) is arranged on the lower right portion of the rotating rod (34), and the magnetic separation mechanism (3) further comprises an adjusting assembly (36) for adjusting the rotating direction of the magnetic disk (33). The water pushing mechanism (4) comprises a square rod (41) slidingly arranged on the left side of the device frame (1), a plurality of water pushing plates (42) are fixedly arranged on the square rod (41) at equal intervals in the front-rear direction, the water pushing plates (42) are arranged in an arc shape coaxial with the magnetic disks (33), a moving assembly (43) for driving the water pushing plates (42) to move back and forth is arranged on the device frame (1) and the water pushing plates (42), and a turning assembly (44) for turning the iron powder at the bottom of the water flow upward is arranged on the water pushing plate (42). The scraping assembly (35) comprises a connecting plate frame (351) fixedly arranged on the right side of the rotating rod (34), two front-rear symmetrical rotating pipe fittings (352) are rotatably arranged on the right side of the connecting plate frame (351), and a plurality of scrapers (354) are arranged on the left side of the rotating pipe fitting (352) at equal intervals in the circumferential direction. The scraping assembly (35) further comprises an arc-shaped cover plate (353) arranged on the left side of the rotating pipe fitting (352) at equal intervals in the circumferential direction, the arc-shaped cover plate (353) is arranged in a staggered manner with the scraper (354), the two rotating pipe fittings (352) on the same connecting plate frame (351) are respectively located on the front and rear sides of the corresponding magnetic disk (33), and the arc-shaped cover plate (353) and the scraper (354) are connected with the rotating pipe fitting (352) in a detachable manner. The rotating pipe fitting (352) is arranged in the radial direction of the magnetic disk (33), and the rotating pipe fitting (352) gradually inclines downward from left to right, the scraper (354) is loaded on the rotating pipe fitting (352) from left to right through the sliding groove cooperation, the arc-shaped cover plate (353) is loaded on the rotating pipe fitting (352) from left to right through the rectangular guide rod thereon, and the length direction of the scraper (354) and the radial direction of the rotating pipe fitting (352) form an included angle.

2. The device for recovering iron powder from steel wastewater according to claim 1, characterized by, The right side of the connecting plate frame (351) is provided with two front-rear symmetrical locking insertion rods (355) slidingly arranged on the lower portion, a pushing spring is arranged between the two locking insertion rods (355) on the same connecting plate frame (351), and a plurality of insertion ports corresponding to the scrapers (354) and for the locking insertion rods (355) to be inserted are formed on the rotating pipe fitting (352) at equal intervals in the circumferential direction.

3. The device for recovering iron powder from steel wastewater according to claim 1, characterized in that, The adjusting assembly (36) comprises a supporting part (361) for connecting the magnetic disc (33) and fixedly installed at the lower end of the rotating rod (34), an angle rod (362) is rotatably arranged at 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 at the lower rear side of the angle rod (362), and a control part (364) for rotating the rotating rod (34) according to the rotating angle of the angle rod (362) is arranged at the upper side of the device frame (1).

4. The device for recovering iron powder from steel wastewater according to claim 3, characterized by The supporting part (361) comprises a L-shaped plate (3611) fixedly installed at the lower end of the rotating rod (34), two left-right symmetrical first wheels (3612) are rotatably arranged in the middle of the inner part of the L-shaped plate (3611), and two groups of second wheels (3613) are rotatably arranged in the inner part of the L-shaped plate (3611) and symmetrically arranged in front and back, and the second wheels (3613) are arranged at equal intervals along the circumference of the magnetic disc (33).

5. The device for recovering iron powder from steel wastewater according to claim 3, characterized in that, The control part (364) comprises an angle sensor (3641) fixedly installed at the upper side of the device frame (1), the angle sensor (3641) is fixedly connected with the angle rod (362), a swing plate (3642) is fixedly installed at the upper part of the rotating rod (34), a synchronous plate (3643) is commonly hinged at the left side of the swing plate (3642), an electric push rod (3644) is commonly hinged between the synchronous plate (3643) and the device frame (1), and the change amount of the rotating angle of the angle rod (362) is proportional to the extension amount of the extension section of the electric push rod (3644).

6. The device for recovering iron powder from steel wastewater according to claim 1, characterized by The moving assembly (43) comprises an execution motor (431) fixedly installed at the rear side of the device frame (1), the output shaft of the execution motor (431) is fixedly connected with the main shaft (31), a groove roller (432) is rotatably arranged at the left side in the inner part of the device frame (1), the groove roller (432) is connected with the main shaft (31) through a belt, and a supporting rod (433) is fixedly installed at the upper part of the middle water pushing plate (42).

7. The device for recovering iron powder from steel wastewater according to claim 6, characterized by A cam groove (4321) is formed in the circumferential surface of the groove roller (432), the cam groove (4321) is annularly closed, and the upper end of the supporting rod (433) extends into the cam groove (4321), so that the cam groove (4321) is matched with the notch of the supporting rod (433).

8. The device for recovering iron powder from steel wastewater according to claim 1, characterized by, The turning assembly (44) comprises a fixed plate (441) fixedly installed at the inner lower part of the water pushing plate (42), a filter cloth (442) is fixedly connected to the front and rear sides of the fixed plate (441), a sliding plate (443) is slidably arranged at the front and rear of the upper part of the fixed plate (441), the filter cloth (442) is supported by the upper side of the sliding plate (443), and the width of the sliding plate (443) is greater than that of the fixed plate (441).

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