A magnetic powder recovery device after magnetic coagulation treatment of wastewater

Abstract

This utility model discloses a magnetic powder recovery device for wastewater treated by magnetic coagulation, comprising a base plate, a recovery box and a shearing box fixed on the upper surface of the base plate, a partition fixed on one side inside the recovery box, and a first discharge port and a second discharge port respectively opened at the bottom of the recovery box and on both sides of the partition. A magnetic roller is rotatably connected inside the recovery box and above the first discharge port. In this utility model, a recovery box, a magnetic roller, a scraper, a first motor, a shearing box, a shearing assembly, a sludge pump, and a nozzle are provided. First, the shearing assembly disperses the sludge and water inside the shearing box. Then, the sludge pump extracts the wastewater from the shearing box and sprays it onto the lower surface of the magnetic roller through the nozzle. The magnetic powder in the wastewater is adsorbed onto the surface of the magnetic roller, while the sludge and water fall directly off. As the first motor drives the magnetic roller to rotate, the scraper removes the magnetic powder from the surface of the magnetic roller. This recovery device achieves a higher magnetic powder recovery rate and better results.

Description

Technical Field

[0001] This utility model relates to the field of magnetic powder recovery technology in magnetic coagulation treatment, and in particular to a magnetic powder recovery device after magnetic coagulation treatment of wastewater. Background Technology

[0002] Magnetic powder recovery devices after magnetic coagulation wastewater treatment are key equipment for the efficient recovery of magnetic powder in wastewater treatment systems. Their core structure typically includes a magnetic separation unit, a stirring mechanism, a magnetic powder collection tank, and a conveying system. Based on the directional adsorption characteristics of magnetic materials in a magnetic field, this device separates the magnetic powder from the water using a magnetic field generated by an electromagnetic or permanent magnet. The adsorbed magnetic powder is then peeled off to the collection tank using a scraper or flushing device, and finally recycled via pumping or a screw conveyor. Its working principle relies on the magnetic flocs formed during coagulation by pollutants loaded on the magnetic powder surface, which are rapidly separated by a magnetic field to achieve efficient solid-liquid purification. These devices are widely used in municipal sewage, industrial wastewater (such as electroplating, dyeing, and petrochemical wastewater), and river management.

[0003] Currently, existing magnetic powder recovery devices directly add the stirred and dispersed wastewater into the separator, with the permanent magnet roller in direct contact with the wastewater. Although the permanent magnet roller can adsorb the magnetic powder in the wastewater, due to the continuous contact between the permanent magnet roller and the wastewater, a small amount of sludge will be mixed in with the magnetic powder and adsorbed on the surface of the permanent magnet roller. This results in the purity of the recovered magnetic powder needing further improvement. In addition, after the scraper removes the magnetic powder from the surface of the permanent magnet roller, the magnetic powder is wet. Wet magnetic powder is not easy to fall off the scraper surface and is not conducive to subsequent rapid drying. Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a magnetic powder recovery device for wastewater after magnetic coagulation treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a magnetic powder recovery device for wastewater treated by magnetic coagulation, comprising a base plate, a recovery box and a shearing box fixed on the upper surface of the base plate, a partition fixed on one side inside the recovery box, a first discharge port and a second discharge port respectively opened at the bottom of the recovery box and on both sides of the partition, a magnetic roller rotatably connected inside the recovery box and above the first discharge port, an inclined scraper fixed on the top of the partition, the top of the scraper being in contact with the surface of the magnetic roller, a shearing assembly provided in the middle of the shearing box, a nozzle provided inside the recovery box and below the magnetic roller, a sludge pump for pumping wastewater inside the shearing box into the nozzle installed on the top of the shearing box, a blowing assembly installed on the top of the recovery box, and a control cabinet installed on the outer wall of the recovery box.

[0006] Furthermore, a first motor is fixed to the outer wall of the recycling bin, and the output shaft of the first motor is fixedly connected to the magnetic roller.

[0007] Furthermore, a feeding port is provided on the top of the shearing box.

[0008] Furthermore, the shearing assembly includes a second motor fixed to the top of the shearing box, with a vertical shaft fixed to the bottom output end of the second motor, the bottom end of the vertical shaft passing through the top wall of the shearing box and fixed with several stirring rods.

[0009] Furthermore, the sludge pump inlet is fixed with a suction pipe, and the other end of the suction pipe extends to the bottom of the shearing tank. The sludge pump outlet is fixed with a discharge pipe, and the other end of the discharge pipe passes through the side wall of the recovery tank and communicates with the nozzle.

[0010] Furthermore, the blowing assembly includes a fan fixed to the upper surface of the recycling bin, and an air outlet pipe is fixed to the air outlet of the fan, which extends through the top wall of the recycling bin to above the scraper.

[0011] Furthermore, a heating tube is fixed in the middle of the air outlet pipe, and an electric heating wire is installed inside the heating tube.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model is a magnetic powder recovery device for wastewater treated by magnetic coagulation. It is equipped with a recovery box, a magnetic roller, a scraper, a first motor, a shearing box, a shearing assembly, a sludge pump, and a nozzle. First, the sludge and water inside the shearing box are broken up by the shearing assembly. Then, the wastewater in the shearing box is pumped out by the sludge pump and sprayed onto the lower surface of the magnetic roller through the nozzle. The magnetic powder in the wastewater will be adsorbed on the surface of the magnetic roller, and the sludge and water will fall directly off. As the first motor drives the magnetic roller to rotate, the scraper scrapes off the magnetic powder on the surface of the magnetic roller. This recovery device has a higher magnetic powder recovery ratio and better effect.

[0014] 2. In use, this utility model is a magnetic powder recovery device for wastewater after magnetic coagulation treatment. It is equipped with a blowing component. Hot air is blown onto the surface of the scraper through the blowing component. This not only blows away the magnetic powder on the surface of the scraper, but also achieves a preliminary drying function, which is due to the subsequent recycling of the magnetic powder. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1: Overall perspective view of this utility model;

[0017] Figure 2 : Overall sectional view of this utility model;

[0018] Figure 3 The present utility model Figure 2 Enlarged view of point A in the middle.

[0019] The attached figures are labeled as follows:

[0020] 1. Base plate; 2. Recycling bin; 3. Partition plate; 4. First discharge port; 5. Second discharge port; 6. Magnetic roller; 7. Scraper; 8. First motor; 9. Shearing box; 10. Feeding port; 11. Shearing assembly; 111. Second motor; 112. Vertical shaft; 113. Stirring rod; 12. Sludge pump; 121. Liquid extraction pipe; 122. Liquid discharge pipe; 123. Nozzle; 13. Material blowing assembly; 131. Blower; 132. Air outlet pipe; 133. Heating tube; 134. Electric heating wire. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3 As shown, a magnetic powder recovery device for wastewater treated by magnetic coagulation is disclosed. The device includes a base plate 1, a recovery box 2 and a shearing box 9 fixed on the upper surface of the base plate 1, a partition 3 fixed on one side inside the recovery box 2, a first discharge port 4 and a second discharge port 5 respectively opened at the bottom of the recovery box 2 and on both sides of the partition 3, a magnetic roller 6 rotatably connected inside the recovery box 2 and above the first discharge port 4, an inclined scraper 7 fixed on the top of the partition 3 and the top of the scraper 7 in contact with the surface of the magnetic roller 6, a shearing assembly 11 arranged in the middle of the shearing box 9, a nozzle 123 arranged inside the recovery box 2 and below the magnetic roller 6, a sludge pump 12 installed on the top of the shearing box 9 to pump the wastewater inside the shearing box 9 into the nozzle 123, a blowing assembly 13 installed on the top of the recovery box 2, and a control cabinet installed on the outer wall of the recovery box 2.

[0023] In this embodiment, the control cabinet adopts the same control cabinet and control method as the existing magnetic separator, and the operation of each component of the device is controlled through the control cabinet.

[0024] A first motor 8 is fixed to the outer wall of the recycling bin 2, and the output shaft of the first motor 8 is fixedly connected to the magnetic roller 6.

[0025] In this embodiment, the first motor 8 is a geared motor, and the magnetic roller 6 is a permanent magnet. The first motor 8 drives the magnetic roller 6 to rotate, thereby using the magnetic roller 6 to adsorb magnetic powder in the sewage. As the magnetic roller 6 rotates, the scraper 7 scrapes off the magnetic powder on the surface of the magnetic roller 6.

[0026] The top of the shearing box 9 has a feeding port 10.

[0027] The addition of a feed port 10 facilitates the addition of wastewater and water into the shearing box 9.

[0028] The shearing assembly 11 includes a second motor 111 fixed to the top of the shearing box 9. A vertical shaft 112 is fixed to the bottom output end of the second motor 111. The bottom end of the vertical shaft 112 passes through the top wall of the shearing box 9 and is fixed with several stirring rods 113.

[0029] In this embodiment, both the vertical shaft 112 and the stirring rod 113 are made of plastic to prevent magnetic powder from adsorbing onto their surfaces. The second motor 111 drives the vertical shaft 112 and the stirring rod 113 to rotate, breaking up the sludge in the wastewater and distributing it evenly. Water can also be added to the wastewater to dilute it, which is beneficial for subsequent magnetic powder separation.

[0030] The sludge pump 12 has a suction pipe 121 fixed at its inlet, and the other end of the suction pipe 121 extends to the bottom of the shearing box 9. The sludge pump 12 has a discharge pipe 122 fixed at its outlet, and the other end of the discharge pipe 122 passes through the side wall of the recovery box 2 and is connected to the nozzle 123.

[0031] Wastewater inside the shearing box 9 can be pumped out by the sludge pump 12 and then pumped into the nozzle 123 through the drain pipe 122. The wastewater is then sprayed onto the surface of the magnetic roller 6 through the nozzle 123. Since the nozzle 123 sprays from below the magnetic roller 6, the magnetic powder is attracted upon contact with the roller 6. The wastewater and sludge fall under gravity and are discharged from the first discharge port 4. High-pressure nozzles should not be used for nozzle 123 to avoid washing away the magnetic powder already adsorbed on the surface of the magnetic roller 6. The nozzle 123 should be selected only in a way that ensures it will not wash away the magnetic powder.

[0032] The blowing assembly 13 includes a blower 131 fixed to the upper surface of the recycling bin 2, and an air outlet 132 is fixed to the air outlet of the blower 131. The air outlet 132 extends through the top wall of the recycling bin 2 to above the scraper 7.

[0033] By starting the fan 131, air can be blown onto the surface of the scraper 7 through the air outlet 132, thereby blowing off the magnetic powder on the surface of the scraper 7.

[0034] A heating tube 133 is fixed in the middle of the air outlet duct 132, and an electric heating wire 134 is installed inside the heating tube 133.

[0035] When air passes through the heating tube 133, it is heated by the electric heating wire 134. The heated air is blown onto the surface of the scraper 7 to preliminarily dry the magnetic powder, which is beneficial for subsequent processing.

[0036] Working principle: First, sludge and sewage are added into the shearing box 9. Water can be added appropriately to dilute the sludge. Then, the second motor 111 is started to drive the vertical shaft 112 and the stirring rod 113 to rotate, thereby stirring and dispersing the sludge. After a period of dispersion, the sludge pump 12 and the first motor 8 are started. The sludge pump 12 extracts the sludge water and sprays it onto the surface of the magnetic roller 6 through the nozzle 123. The first motor 8 drives the magnetic roller 6 to rotate, thereby scraping off the magnetic powder on the surface of the magnetic roller 6 with the scraper 7. Then, the magnetic powder on the surface of the scraper 7 is blown off by the blowing assembly 13. The sludge and magnetic powder are discharged from the first discharge port 4 and the second discharge port 5, respectively.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic powder recovery device for wastewater after magnetic coagulation treatment, comprising a base plate (1), characterized in that: A recycling box (2) and a shearing box (9) are fixed on the upper surface of the base plate (1). A partition (3) is fixed on one side inside the recycling box (2). A first discharge port (4) and a second discharge port (5) are respectively opened at the bottom of the recycling box (2) and on both sides of the partition (3). A magnetic roller (6) is rotatably connected inside the recycling box (2) and above the first discharge port (4). An inclined scraper (7) is fixed on the top of the partition (3), and the top of the scraper (7) is in contact with the surface of the magnetic roller (6). A shearing assembly (11) is provided in the middle of the shearing box (9). A nozzle (123) is provided inside the recycling box (2) and below the magnetic roller (6). A sludge pump (12) is installed on the top of the shearing box (9) to pump the sewage inside the shearing box (9) into the nozzle (123). A blowing assembly (13) is installed on the top of the recycling box (2). A control cabinet is installed on the outer wall of the recycling box (2).

2. The magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 1, characterized in that: The outer wall of the recycling bin (2) is fixed with a first motor (8), and the output shaft of the first motor (8) is fixedly connected to the magnetic roller (6).

3. The magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 1, characterized in that: The shear box (9) has a feeding port (10) at the top.

4. The magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 1, characterized in that: The shearing assembly (11) includes a second motor (111) fixed to the top of the shearing box (9). A vertical shaft (112) is fixed to the bottom output end of the second motor (111). The bottom end of the vertical shaft (112) passes through the top wall of the shearing box (9) and is fixed with several stirring rods (113).

5. The magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 1, characterized in that: The sludge pump (12) has a suction pipe (121) fixed at its inlet, and the other end of the suction pipe (121) extends to the bottom of the shear box (9). The sludge pump (12) has a discharge pipe (122) fixed at its outlet, and the other end of the discharge pipe (122) passes through the side wall of the recovery box (2) and communicates with the nozzle (123).

6. The magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 1, characterized in that: The blowing assembly (13) includes a fan (131) fixed to the upper surface of the recycling box (2), and an air outlet pipe (132) is fixed to the air outlet of the fan (131). The air outlet pipe (132) extends through the top wall of the recycling box (2) to above the scraper (7).

7. A magnetic powder recovery device for wastewater after magnetic coagulation treatment according to claim 6, characterized in that: A heating tube (133) is fixed in the middle of the air outlet pipe (132), and an electric heating wire (134) is installed inside the heating tube (133).

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