Magnetic separator with high capture rate

Abstract

The utility model relates to sewage treatment equipment technical field especially relates to a kind of magnetic separation machine of high capture rate, including base, magnetic roller is installed on base, rotating drum is rotatably installed outside magnetic roller, driving device is installed on base, driving device drives rotating drum, rotating drum is installed with machine shell outside, the front side of machine shell is equipped with inlet, inlet is installed with inlet portion, the rear side of machine shell is equipped with magnetic powder outlet, the front side of base is installed with cyclone deslagging device, the upper end outlet of cyclone deslagging device is communicated to inlet, magnetic roller is divided into magnetic area and non-magnetic area along the circumference, non-magnetic area corresponds to the place at magnetic powder outlet, scraper is installed on the inner wall of machine shell at non-magnetic area, scraper and the outer periphery of rotating drum are closely adhered;The utility model realizes adsorption-conveying-peeling process integration, separation process is continuous, efficient;Magnetic block is arranged on magnetic roller using gradient, form magnetic field intensity change, both enhance the capture ability to magnetic powder and improve magnetic powder peeling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to a magnetic separator with a high capture rate. Background Technology

[0002] In the magnetic coagulation process of wastewater treatment, magnetic powder needs to be recovered from the sludge using a magnetic separator. Existing magnetic separators often employ circumferential magnetic distribution or simple magnetic systems, which present the following problems: the distinction between the magnetic powder adsorption and stripping areas is unclear, resulting in incomplete magnetic powder stripping, leading to powder loss, low recovery rates, and easy internal contamination; the internal material status cannot be visually observed during operation, requiring frequent opening of the cover for troubleshooting and maintenance, affecting continuous operation and causing inconvenience; and the magnetic system distribution is unreasonable, with the magnetic field range not matching the material flow, affecting separation efficiency and the continuity of equipment operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a magnetic separator with high capture rate, optimized magnetic system layout, visible internal structure, improved equipment stability and separation efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a magnetic separator with high capture rate, including a base, roller supports fixedly installed at both ends of the base, a magnetic roller fixedly installed between the two roller supports, a non-magnetic rotating drum rotatably installed outside the magnetic roller and enclosing the magnetic roller, a drive device installed on the base, the drive device driving a transmission device connected to it, the transmission device transmitting power to the rotating drum, a housing installed outside the rotating drum, a magnetic powder separation chamber between the housing and the rotating drum, a feed inlet on the front side of the housing, a feed section installed at the feed inlet, a magnetic powder outlet on the rear side of the housing, a hydrocyclone slag remover installed on the front side of the base, the upper outlet of the hydrocyclone slag remover connected to the feed inlet, the magnetic roller being divided into a magnetic zone and a non-magnetic zone along the circumference, the non-magnetic zone being located at the magnetic powder outlet, a scraper installed on the inner wall of the housing at the non-magnetic zone, the scraper being in close contact with the outer circumference of the rotating drum.

[0005] As a preferred technical solution, a spray water pipe is also installed on the inner wall of the casing above the scraper. The spray water pipe has several spray holes on the side facing the rotating drum, and the spray water pipe is connected to a water pump.

[0006] As a preferred technical solution, two feed inlets are provided along the horizontal direction, and each feed inlet is equipped with a hydrocyclone slag remover.

[0007] As a preferred technical solution, an observation port is provided on the housing at the magnetic powder outlet, and a transparent observation window is hinged to the observation port.

[0008] As a preferred technical solution, a magnetic powder recovery device is provided on the housing connected to the magnetic powder outlet.

[0009] As a preferred technical solution, the magnetic area includes a strong magnetic area and a weak magnetic area. The strong magnetic area occupies 205° along the circumference of the magnetic roller, the weak magnetic area occupies 35° along the circumference of the magnetic roller, and the non-magnetic area occupies 120° along the circumference of the magnetic roller.

[0010] As a preferred technical solution, the magnetic blocks used in the strong magnetic region are more magnetic than those used in the weak magnetic region.

[0011] Due to the adoption of the above technical solution, a high-capture-rate magnetic separator includes a base, with roller supports fixedly installed at both ends of the base. A magnetic roller is fixedly installed between the two roller supports. A non-magnetic rotating drum is rotatably installed outside the magnetic roller, enclosing it. A drive device is installed on the base, driving a transmission device that transmits power to the rotating drum. A housing is installed outside the rotating drum, and a magnetic powder separation chamber is located between the housing and the rotating drum. An inlet is provided on the front side of the housing, with an inlet section installed thereon. A magnetic powder outlet is provided on the rear side of the housing. A hydrocyclone separator is installed on the front side of the base, with its upper outlet connected to the inlet. The magnetic roller is divided into a magnetic zone and a non-magnetic zone along its circumference. The non-magnetic zone corresponds to the area of ​​the magnetic roller. At the magnetic powder outlet, a scraper is installed on the inner wall of the casing in the non-magnetic zone, and the scraper is in close contact with the outer circumference of the rotating drum. The beneficial effects of this utility model are: sludge containing magnetic powder enters through the inlet of the hydrocyclone separator. Under strong rotational motion, due to density differences, under the combined action of centrifugal force, centripetal force, buoyancy, and fluid drag, the denser particles, such as silt, are thrown against the wall and settle downwards, eventually being discharged through the bottom drain. Meanwhile, the less dense fluid containing magnetic powder rotates upwards along the axis and enters the feed inlet of the casing from the top outlet, thus entering the magnetic powder separation chamber. Under the action of the magnetic roller and the rotating drum, the magnetic powder is adsorbed onto the surface of the rotating drum in the magnetic zone. When the rotating drum rotates to the non-magnetic zone, the magnetic field disappears and it is scraped off by the scraper, discharged from the magnetic powder outlet, thus achieving magnetic powder recovery. The remaining mud and water still flow out from the bottom drain. This invention integrates the adsorption-conveying-stripping process, ensuring a continuous and efficient separation. The magnetic blocks are arranged in a gradient on the magnetic roller, creating varying magnetic field strengths to enhance the capture of magnetic powder. The structural design of the fixed magnetic roller, rotating drum, and scraper combines stability with ease of maintenance, resulting in minimal wear, long service life, and enhanced magnetic powder stripping efficiency. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein: Figure 1 This is a schematic diagram of the main structure of the high-capture-rate magnetic separator of this utility model; Figure 2 This is a rear view schematic diagram of the high capture rate magnetic separator of this utility model; Figure 3 This is a schematic diagram of the right side of the high-capture-rate magnetic separator of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model after the casing has been removed; Figure 5 This is a schematic diagram of the magnetic block distribution structure of the magnetic roller of this utility model.

[0013] In the diagram: 1-Base; 11-Roller support; 2-Machine casing; 21-Feed section; 22-Magnetic powder outlet; 23-Transparent observation window; 24-Magnetic powder recovery device; 3-Magnetic roller; 31-Strong magnetic zone; 32-Weak magnetic zone; 33-Non-magnetic zone; 34-Magnetic block; 4-Rotating drum; 5-Drive device; 6-Transmission device; 7-Cyclone slag remover; 71-Inlet; 8-Scraper; 9-Spray water pipe. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0015] like Figures 1 to 5As shown, the high capture rate magnetic separator includes a base 1, with roller supports 11 fixedly mounted at both ends of the base 1. A magnetic roller 3 is fixedly mounted between the two roller supports 11. A non-magnetic rotating drum 4, enclosing the magnetic roller 3, is rotatably mounted outside the magnetic roller 3. A drive device 5, preferably a motor, is mounted on the base 1. The drive device 5 drives and connects to a transmission device 6, preferably a transmission chain, which transmits power to the rotating drum 4. A housing 2 is mounted outside the rotating drum 4. The space between the housing 2 and the rotating drum 4 is a magnetic powder separation chamber, where wastewater containing magnetic powder is separated. The magnetic powder is recovered in the magnetic powder separation chamber. The front side of the housing 2 is provided with a feed inlet and a feed section 21 is installed at the feed inlet. The rear side of the housing 2 is provided with a magnetic powder outlet 22. The front side of the base 1 is provided with a cyclone separator 7. The upper outlet of the cyclone separator 7 is connected to the feed inlet. The magnetic roller 3 is divided into a magnetic zone and a non-magnetic zone 33 along the circumference. The circumferential proportion of the magnetic zone is greater than that of the non-magnetic zone 33. The non-magnetic zone 33 is located at the magnetic powder outlet 22. A scraper 8 is installed on the inner wall of the housing 2 at the non-magnetic zone 33. The scraper 8 is a plastic scraper 8, which is used to scrape off the magnetic powder adsorbed on the surface of the rotating drum 4. The scraper 8 is in close contact with the outer periphery of the rotating drum 4. Sludge containing magnetic powder enters through the inlet 71 of the hydrocyclone separator 7. Under intense rotation, due to density differences, and under the combined action of centrifugal force, centripetal force, buoyancy, and fluid drag, denser particles such as silt are thrown against the wall and settle downwards, eventually being discharged through the bottom drain of the hydrocyclone separator 7. Meanwhile, the less dense fluid containing magnetic powder rotates upwards along the axis and enters the feed inlet of the casing 2 from the top outlet, thus entering the magnetic powder separation chamber. Under the action of the magnetic roller 3 and the rotating drum 4, the magnetic powder is adsorbed onto the surface of the rotating drum 4 in the magnetic zone. As the rotating drum 4 rotates to the non-magnetic zone 33, the magnetic field disappears, and the magnetic powder is scraped off by the scraper 8 and discharged from the magnetic powder outlet 22, achieving magnetic powder recovery. The remaining mud and water still flow out from the bottom drain. This invention integrates the adsorption-conveying-stripping process, making the separation process continuous and efficient. The magnetic blocks 34 are arranged in a gradient on the magnetic roller 3, creating variations in magnetic field strength and enhancing the capture capacity of the magnetic powder. The structural design of the fixed magnetic roller 3, rotating roller 4 and scraper 8 combines stability and ease of maintenance, resulting in less wear, longer service life, and enhanced magnetic powder stripping efficiency.

[0016] like Figure 3 and Figure 4 As shown, a spray pipe 9 is also installed on the inner wall of the housing 2 above the scraper 8. Several spray holes are opened on the side of the spray pipe 9 facing the rotating drum 4. The spray pipe 9 is connected to a water pump. The spray pipe 9 is supplied with water by the water pump and sprays water when the scraper 8 scrapes away the magnetic powder to prevent the magnetic powder from splashing. The spray holes are directly facing the rotating drum 4.

[0017] like Figure 1As shown, there are two feed inlets along the horizontal direction, and each feed inlet is equipped with a hydrocyclone separator 7. The two hydrocyclone separators 7 can feed materials simultaneously or alternately, which can improve working efficiency and facilitate maintenance. The hydrocyclone separator 7 is existing technology, and its structure and working principle will not be described in detail here.

[0018] like Figure 2 As shown, an observation port is provided on the housing 2 at the magnetic powder outlet 22, and a transparent observation window 23 is hinged to the observation port. The transparent observation window 23 is made of transparent and wear-resistant material, allowing direct observation of the separation of the feed material and magnetic powder without opening the cover.

[0019] like Figures 2 to 4 As shown, a magnetic powder recovery device 24 is provided on the housing 2, which is connected to the magnetic powder outlet 22. The magnetic powder recovery device 24 facilitates the guidance and recovery of magnetic powder.

[0020] like Figure 5 As shown, the magnetic zone includes a strong magnetic zone 31 and a weak magnetic zone 32. The strong magnetic zone 31 occupies 205° of the circumference of the magnetic roller 3, the weak magnetic zone 32 occupies 35° of the circumference of the magnetic roller 3, and the non-magnetic zone 33 occupies 120° of the circumference of the magnetic roller 3. The magnetic blocks 34 used in the strong magnetic zone 31 are more magnetic than those used in the weak magnetic zone 32. The layout of 205° strong magnetic + 35° weak magnetic + 120° non-magnetic achieves an integrated "adsorption-conveying-stripping" process, resulting in a continuous and efficient separation process. The magnetic blocks 34 are arranged in a gradient from strong to weak on the magnetic roller 3, creating variations in magnetic field strength, which enhances the capture ability and scraping efficiency of the magnetic powder.

[0021] This utility model has the following advantages: (1) High magnetic powder recovery rate: The magnetic system layout of 205° strong magnet + 35° weak magnet + 120° non-magnetic ensures thorough stripping and reduces magnetic powder loss; (2) Visualized operation management: The design of the transparent observation window 23 avoids frequent opening of the cover, improving the ease of operation and the airtightness of the equipment; (3) Compact structure and stable operation: fixed magnetic roller 3 + rotating drum 4, with low wear and long service life; (4) Scientific magnetic force distribution: Gradient magnetic distribution enhances the ability to capture fine magnetic powder and improves the separation effect.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-capture-rate magnetic separator, comprising a base (1), characterized in that: Roller supports (11) are fixedly installed at both ends of the base (1), and a magnetic roller (3) is fixedly installed between the two roller supports (11). A non-magnetic rotating drum (4) is rotatably installed outside the magnetic roller (3) and encloses the magnetic roller (3). A drive device (5) is installed on the base (1), and the drive device (5) drives a transmission device (6) connected to it. The transmission device (6) transmits power to the rotating drum (4). A housing (2) is installed outside the rotating drum (4). The space between the housing (2) and the rotating drum (4) is a magnetic powder separation chamber. 2) A feed inlet is provided on the front side, and a feed part (21) is installed at the feed inlet. A magnetic powder outlet (22) is provided on the rear side of the machine casing (2). A cyclone separator (7) is installed on the front side of the machine base (1). The upper outlet of the cyclone separator (7) is connected to the feed inlet. The magnetic roller (3) is divided into a magnetic area and a non-magnetic area (33) along the circumference. The non-magnetic area (33) is located at the magnetic powder outlet (22). A scraper (8) is installed on the inner wall of the machine casing (2) at the non-magnetic area (33). The scraper (8) is in close contact with the outer periphery of the rotating drum (4).

2. The high capture rate magnetic separator as described in claim 1, characterized in that: A spray pipe (9) is also installed on the inner wall of the housing (2) above the scraper (8). Several spray holes are opened on the side of the spray pipe (9) facing the rotating drum (4). The spray pipe (9) is connected to a water pump.

3. The high capture rate magnetic separator as described in claim 1, characterized in that: Two feed inlets are provided along the horizontal direction, and each feed inlet is equipped with a hydrocyclone slag remover (7).

4. The high capture rate magnetic separator as described in claim 1, characterized in that: An observation port is provided on the housing (2) at the magnetic powder outlet (22), and a transparent observation window (23) is hinged to the observation port.

5. The high capture rate magnetic separator as described in claim 1, characterized in that: The housing (2) is equipped with a magnetic powder recovery device (24) connected to the magnetic powder outlet (22).

6. The high capture rate magnetic separator as described in claim 1, characterized in that: The magnetic area includes a strong magnetic area (31) and a weak magnetic area (32). The strong magnetic area (31) occupies 205° along the circumference of the magnetic roller (3), the weak magnetic area (32) occupies 35° along the circumference of the magnetic roller (3), and the non-magnetic area (33) occupies 120° along the circumference of the magnetic roller (3).

7. The high capture rate magnetic separator as described in claim 6, characterized in that: The magnetic block (34) used in the strong magnetic region (31) is more magnetic than the magnetic block (34) used in the weak magnetic region (32).

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