A magnetic separation device and a production system

Abstract

The present invention relates to the technical field of magnetic separation equipment, and particularly relates to a magnetic separation device and a production system. The magnetic separation device includes: a liquid inlet tank, a first drum and a second drum arranged in sequence; the first drum includes a first magnetic roller and a first outer cylinder; the first magnetic roller is fixedly arranged inside the first outer cylinder, the first outer cylinder is rotatably arranged, the first magnetic roller forms a first magnetic adsorption area and a first non-magnetic area on the surface of the first outer cylinder, and the first magnetic adsorption area is used for adsorbing magnetic impurities; the second drum includes a second magnetic roller and a second outer cylinder, the second magnetic roller is fixedly arranged inside the second outer cylinder, the second outer cylinder is rotatably arranged, and the second magnetic roller forms a second magnetic adsorption area and a second non-magnetic area on the surface of the second outer cylinder; any point on the axis of the second drum and any point on the axis of the first drum are connected through the second magnetic adsorption area and the first non-magnetic area, so that the magnetic impurities adsorbed by the first drum can be transferred to the second drum; the first outer cylinder and the second outer cylinder can also play a role in squeezing dry.

Description

Technical Field

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

[0002] The magnetic separation device is used to separate magnetic impurities in a liquid, and generally includes a magnetic inner cylinder, a non-magnetic metal outer cylinder sleeved outside the magnetic inner cylinder, and a scraper. When in use, the metal outer cylinder is driven to rotate by a motor, and the magnetic impurities in the working liquid are adsorbed on the surface of the metal outer cylinder and are taken out of the working liquid by the rotating metal outer cylinder, and then the magnetic impurities are scraped off and recovered by the scraper.

[0003] When the above magnetic separation device is in use, the scraper can be in direct contact with the surface of the metal outer cylinder, or the scraper can be arranged at an interval from the metal outer cylinder; when the scraper is in direct contact with the surface of the metal outer cylinder, it will cause wear of the surface of the metal outer cylinder and / or the scraper, and it needs to be adjusted regularly by manual after being used for a certain period of time; when the scraper is arranged at an interval from the surface of the metal outer cylinder, there is a problem that the magnetic impurities on the surface of the metal outer cylinder cannot be scraped off smoothly, resulting in the secondary rotation of the magnetic impurities with the metal outer cylinder and affecting the subsequent adsorption of magnetic impurities in the liquid. Summary of the Invention

[0004] (1) The problem to be solved by the present invention is that the existing magnetic separation device uses a scraper to scrape off the magnetic impurities on the surface of the metal outer cylinder, and the actual use effect is poor.

[0005] (2) Technical Solution

[0006] To solve the above technical problems, an embodiment of the present invention provides a magnetic separation device, including: a liquid inlet tank for receiving a working liquid containing magnetic impurities, and a first drum and a second drum arranged in sequence;

[0007] The first drum includes a first magnetic roller and a first outer cylinder; the first magnetic roller is fixedly arranged inside the first outer cylinder, the first outer cylinder can rotate relative to the first magnetic roller, the first magnetic roller forms a first magnetic adsorption area and a first non-magnetic area on the surface of the first outer cylinder, and the first magnetic adsorption area is used for adsorbing magnetic impurities;

[0008] The second drum includes a second magnetic roller and a second outer cylinder, the second magnetic roller is fixedly arranged inside the second outer cylinder, the second outer cylinder can rotate relative to the second magnetic roller, the second magnetic roller forms a second magnetic adsorption area and a second non-magnetic area on the surface of the second outer cylinder; any point on the axis of the second drum and any point on the axis of the first drum are connected by a line passing through the second magnetic adsorption area and the first non-magnetic area.

[0009] Further, a concave structure matching the first outer cylinder is provided at the bottom of the liquid inlet tank, and a part of the first outer cylinder is located in the concave structure.

[0010] Further, the first outer cylinder and the second outer cylinder rotate in opposite directions.

[0011] Further, along the rotation direction of the second outer cylinder, the magnetism of the second magnetic roller is enhanced.

[0012] Further, the magnetism of the part of the first magnetic attraction area in contact with the working liquid is stronger than that of the rest of the first magnetic attraction area.

[0013] Further, taking any point on the axis of the primary roller as the origin, the horizontal direction as the x-axis, and the vertical direction as the y-axis to establish a plane rectangular coordinate system, and taking the flow direction of the working liquid as the positive direction of the x-axis and the vertically upward direction as the positive direction of the y-axis; the axis of the secondary roller is located in the first quadrant of this plane rectangular coordinate system.

[0014] Further, a water baffle is provided at the liquid inlet end of the liquid inlet tank; one end of the water baffle away from the liquid inlet tank is rotatably arranged so that the water baffle can swing with the impact of the working liquid.

[0015] Further, an adjusting assembly is further included; the adjusting assembly is used to adjust the gap between the first outer cylinder and the second outer cylinder.

[0016] Further, the adjusting assembly includes an elastic member; both ends of the elastic member are rotatably connected to the rotating shafts of the first outer cylinder and the second outer cylinder respectively.

[0017] Another embodiment of the present invention further provides a production system, including the magnetic separation device in any of the above embodiments.

[0018] The beneficial effects of the present invention:

[0019] A magnetic separation device provided by the present invention includes: a liquid inlet tank for receiving a working liquid containing magnetic impurities, and a primary roller and a secondary roller arranged in sequence; the primary roller includes a first magnetic roller and a first outer cylinder; the first magnetic roller is fixedly arranged in the first outer cylinder, the first outer cylinder can rotate relative to the first magnetic roller, the first magnetic roller forms a first magnetic attraction area and a first non-magnetic area on the surface of the first outer cylinder, and the first magnetic attraction area is used for adsorbing magnetic impurities; the secondary roller includes a second magnetic roller and a second outer cylinder, the second magnetic roller is fixedly arranged in the second outer cylinder, the second outer cylinder can rotate relative to the second magnetic roller, the second magnetic roller forms a second magnetic attraction area and a second non-magnetic area on the surface of the second outer cylinder; the line connecting any point on the axis of the secondary roller and any point on the axis of the primary roller passes through the second magnetic attraction area and the first non-magnetic area.

[0020] By arranging a first magnetic attraction area and a first non-magnetic area on the first outer cylinder to cooperate with the second magnetic attraction area and the second non-magnetic area on the second outer cylinder, the magnetic impurities adsorbed by the primary roller can be transferred to the secondary roller, and there will be no magnetic interference during the transfer of the magnetic impurities, and the transfer of the magnetic impurities is more thorough. At the same time, the mutual extrusion of the first outer cylinder and the second outer cylinder can also play a role in squeezing dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the magnetic separation device provided by the embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the primary roller provided by the embodiment of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the secondary roller provided by the embodiment of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the first magnetic roller provided by the embodiment of the present invention.

[0026] Reference numerals: 1 - liquid inlet tank; 2 - primary roller; 21 - first magnetic roller; 22 - first outer cylinder; 23 - first magnetic attraction area; 24 - first non-magnetic area; 3 - secondary roller; 31 - second magnetic roller; 32 - second outer cylinder; 33 - second magnetic attraction area; 34 - second non-magnetic area; 4 - water baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0028] As Figures 1 to 4As shown in the figure, an embodiment of the present invention provides a magnetic separation device, including: a liquid inlet tank 1 for receiving a working liquid containing magnetic impurities, and a first drum 2 and a second drum 3 arranged in sequence; the first drum 2 includes a first magnetic roller 21 and a first outer cylinder 22; the first magnetic roller 21 is fixedly arranged inside the first outer cylinder 22, the first outer cylinder 22 can rotate relative to the first magnetic roller 21, the first magnetic roller 21 forms a first magnetic adsorption area 23 and a first non-magnetic area 24 on the surface of the first outer cylinder 22, and the first magnetic adsorption area 23 is used for adsorbing magnetic impurities; the second drum 3 includes a second magnetic roller 31 and a second outer cylinder 32, the second magnetic roller 31 is fixedly arranged inside the second outer cylinder 32, the second outer cylinder 32 can rotate relative to the second magnetic roller 31, the second magnetic roller 31 forms a second magnetic adsorption area 33 and a second non-magnetic area 34 on the surface of the second outer cylinder 32; any point on the axis of the second drum 3 and any point on the axis of the first drum 2 are connected through the second magnetic adsorption area 33 and the first non-magnetic area 24.

[0029] The magnetic separation device provided in this embodiment is used to separate magnetic impurities in the working fluid, such as magnetic iron oxides or iron sand, etc.; the working fluid can come from a sheet metal surface treatment device. The above-mentioned magnetic separation device includes a liquid inlet tank 1, a first-stage drum 2, and a second-stage drum 3. The liquid inlet tank 1 has a liquid inlet end and a liquid outlet end. The working fluid from the upstream device enters the liquid inlet tank 1 from the liquid inlet end of the liquid inlet tank 1. After being treated by the first-stage drum 2 and the second-stage drum 3 to remove the magnetic impurities therein, the obtained filtrate is discharged from the liquid outlet end out of the liquid inlet tank 1 and enters the subsequent tank body for subsequent processes; the first-stage drum 2 and the second-stage drum 3 are arranged in sequence, that is, the axes of the first-stage drum 2 and the second-stage drum 3 are parallel, and the axis is the center line of the first-stage drum 2 and the second-stage drum 3. Moreover, there is a certain gap between the first-stage drum 2 and the second-stage drum 3. Specifically, there is a certain gap between the first outer cylinder 22 of the first-stage drum 2 and the second outer cylinder 32 of the second-stage drum 3, so that the magnetic impurities adsorbed by the first-stage drum 2 can pass through the area between the first-stage drum 2 and the second-stage drum 3, and when the magnetic impurities pass through the area between the first-stage drum 2 and the second-stage drum 3, the magnetic impurities can be transferred from the first-stage drum 2 to the second-stage drum 3; during use, the first outer cylinder 22 of the first-stage drum 2 and the second outer cylinder 32 of the second-stage drum 3 rotate around their own axes.Specifically, in this embodiment, the first-level drum 2 includes a first magnetic roller 21 and a first outer cylinder 22; the first outer cylinder 22 is sleeved outside the first magnetic roller 21, and the first outer cylinder 22 can rotate. When the first outer cylinder 22 rotates, the first magnetic roller 21 will not rotate with the first outer cylinder 22, and the first magnetic roller 21 is fixedly arranged inside the first outer cylinder 22; the material of the first outer cylinder 22 is a non-magnetic metal material, such as stainless steel, etc. Under the action of the first magnetic roller 21, a first magnetic adsorption area 23 capable of adsorbing magnetic impurities and a first non-magnetic area 24 without magnetism are formed on the surface of the first outer cylinder 22; optionally, the first magnetic roller 21 includes a first main body and a plurality of magnets. The axial cross-section of the first main body is fan-shaped, and all the magnets are arranged in a matrix form on the surface of the first main body, or the first main body is cylindrical, and a plurality of electromagnets are arranged in a matrix form on the cylindrical surface. By controlling the on-off of the electromagnets on the surface of the first main body, the ranges of the first magnetic adsorption area 23 and the first non-magnetic area 24 on the surface of the first outer cylinder 22 can be controlled; when the first main body is fan-shaped, the first magnetic adsorption area 23 corresponds to the part of the first magnetic roller 21 where the magnets are arranged, and the first non-magnetic area 24 corresponds to the part of the first magnetic roller 21 where no magnets are arranged; when the first main body is cylindrical, the first magnetic adsorption area 23 corresponds to the part of the energized electromagnets, and the first non-magnetic area 24 corresponds to the part of the non-energized electromagnets; since the first magnetic roller 21 does not rotate with the first outer cylinder 22 when the first outer cylinder 22 rotates, the positions of the above-mentioned first magnetic adsorption area 23 and the first non-magnetic area 24 relative to the liquid inlet groove 1 are fixed; at least a part of the first magnetic adsorption area 23 of the first outer cylinder 22 is immersed in the liquid inlet groove 1 for adsorbing magnetic impurities in the working liquid. After the magnetic impurities in the working liquid are adsorbed onto the surface of the first outer cylinder 22, they will rotate with the first outer cylinder 22. When the magnetic impurities move to the first non-magnetic area 24, they will separate from the first outer cylinder 22.The secondary drum 3 includes a second magnetic roller 31 and a second outer cylinder 32; the second outer cylinder 32 is sleeved outside the second magnetic roller 31, and the second outer cylinder 32 can rotate. When the second outer cylinder 32 rotates, the second magnetic roller 31 will not rotate with the second outer cylinder 32, and the second magnetic roller 31 is fixedly arranged inside the second outer cylinder 32; the second outer cylinder 32 is made of a non-magnetic metal material, such as stainless steel, etc. Under the action of the second magnetic roller 31, a second magnetic adsorption area 33 capable of adsorbing magnetic impurities and a second non-magnetic area 34 without magnetism are formed on the surface of the second outer cylinder 32; optionally, the second magnetic roller 31 includes a second main body and several magnets. The axial section of the second main body is fan-shaped, and all the magnets are arranged in a matrix form on the surface of the second main body. Or, the second main body is cylindrical, and several electromagnets are arranged in a matrix form on the cylindrical surface. By controlling the energization and de-energization of the electromagnets on the surface of the second main body, the ranges of the second magnetic adsorption area 33 and the second non-magnetic area 34 on the surface of the second outer cylinder 32 can be controlled; when the second main body is fan-shaped, the second magnetic adsorption area 33 corresponds to the part of the second magnetic roller 31 where the magnets are arranged, and the second non-magnetic area 34 corresponds to the part of the second magnetic roller 31 where no magnets are arranged; when the first main body is cylindrical, the first magnetic adsorption area 23 corresponds to the part of the energized electromagnets, and the first non-magnetic area 24 corresponds to the part of the non-energized electromagnets; since the second magnetic roller 31 does not rotate with the second outer cylinder 32 when the second outer cylinder 32 rotates, the positions of the above-mentioned second magnetic adsorption area 33 and the second non-magnetic area 34 relative to the liquid inlet groove 1 are fixed. Further, in this embodiment, the connection line between any point on the axis of the primary drum 2 and any point on the axis of the secondary drum 3 passes through the first non-magnetic area 24 and the second magnetic adsorption area 33. Therefore, during use, when the magnetic impurities adsorbed on the surface of the first outer cylinder 22 move from the first magnetic adsorption area 23 to the first non-magnetic area 24 along with the first outer cylinder 22, the first outer cylinder 22 no longer adsorbs magnetic impurities. At this time, the magnetic impurities will transfer to the second magnetic adsorption area 33 of the second outer cylinder 32 and rotate with the second outer cylinder 32. When the magnetic impurities on the surface of the second outer cylinder 32 move to the second non-magnetic area 34 along with the second outer cylinder 32, they will separate from the second outer cylinder 32 for subsequent recycling. Moreover, through the cooperation of the first outer cylinder 22 and the second outer cylinder 32, the magnetic impurities can be squeezed dry during the transfer process of the magnetic impurities.

[0030] In the magnetic separation device provided in this embodiment, during use, by setting the first magnetic adsorption area 23 and the first non-magnetic area 24 on the first outer cylinder 22 to cooperate with the second magnetic adsorption area 33 and the second non-magnetic area 34 on the second outer cylinder 32, the magnetic impurities adsorbed by the primary drum 2 can be transferred to the secondary drum 3, and there will be no magnetic interference during the transfer process of the magnetic impurities, and the transfer of the magnetic impurities is more thorough; at the same time, the mutual extrusion of the first outer cylinder 22 and the second outer cylinder 32 can also play a role in squeezing dry.

[0031] The magnetic separation device provided by the embodiment of the present invention, such as Figure 1As shown, a recessed structure matching the first outer cylinder 22 is provided at the bottom of the liquid inlet tank 1, and a part of the first outer cylinder 22 is located within the recessed structure.

[0032] In this embodiment, a recessed structure that is arc-shaped and matches the first outer cylinder 22 is provided at the bottom of the liquid inlet tank 1. During assembly, a part of the first outer cylinder 22 is arranged within the above-mentioned recessed structure to improve the adsorption effect on magnetic impurities.

[0033] In the magnetic separation device provided by the embodiment of the present invention, the rotation directions of the first outer cylinder 22 and the second outer cylinder 32 are opposite, which facilitates the transfer of the adsorbed magnetic impurities and improves the extrusion effect on the magnetic impurities, promoting the dehydration of the magnetic impurities. Moreover, the rotation speeds of the first outer cylinder 22 and the second outer cylinder 32 are adjustable and independently regulated, that is, both the first outer cylinder 22 and the second outer cylinder 32 are equipped with independent drive motors for driving the rotation of the first outer cylinder 22 and the second outer cylinder 32; during use, by adjusting the rotation speeds of the first outer cylinder 22 and the second outer cylinder 32, the adsorption amount of the magnetic impurities can be adjusted, and finally the adjustment of the squeezing effect on the magnetic impurities can be achieved.

[0034] In the magnetic separation device provided by the embodiment of the present invention, the magnetism of the second magnetic roller 31 increases along the rotation direction of the second outer cylinder 32.

[0035] In this embodiment, in order to improve the adsorption amount of the part at the end of the second magnetic adsorption area 33 along the rotation direction of the second outer cylinder 32 during use, the magnetism of the second magnetic roller 31 increases along the rotation direction of the second outer cylinder 32. For example, the magnetism of the second magnetic roller 31 can gradually increase along the rotation direction of the second outer cylinder 32, or the magnetism at the end of the second magnetic roller 31 can be stronger than that at the front end of the second magnetic roller 31 along the rotation direction of the second outer cylinder 32; through the above settings, thus, there is no need to set structures such as a scraper to constantly scrape the magnetic impurities on the surface of the second outer cylinder 32. When the magnetic impurities on the surface of the second outer cylinder 32 accumulate to a certain amount, due to the magnetic force being unable to resist the driving force of the second outer cylinder 32 on the adsorbed magnetic impurities, a large piece of magnetic impurity adsorbent will fall off.

[0036] In the magnetic separation device provided by the embodiment of the present invention, the magnetism of the part of the first magnetic adsorption area 23 in contact with the working fluid is stronger than that of the remaining part of the first magnetic adsorption area 23.

[0037] In this embodiment, the part of the first magnetic adsorption area 23 of the first outer cylinder 22 below the liquid level of the working fluid is impacted by the working fluid, especially the part near the liquid inlet end of the liquid inlet tank 1. Therefore, the magnetic configuration here is relatively strong to avoid being unable to adsorb magnetic impurities due to the impact of the working fluid; when using a permanent magnet, the magnet for this part can be a magnet with the grade N42 or a neodymium iron boron magnet with stronger magnetism; when using an electromagnet, a liquid level sensor can be used to adjust the magnetic strength of the electromagnet.

[0038] The magnetic separation device provided by the embodiment of the present invention, as Figure 1 shown, taking any point on the axis of the first-stage drum 2 as the origin, the horizontal direction as the x-axis, and the vertical direction as the y-axis to establish a plane rectangular coordinate system, taking the flowing direction of the working fluid as the positive direction of the x-axis, and the vertically upward direction as the positive direction of the y-axis; the axis of the second-stage drum 3 is located in the first quadrant of this plane rectangular coordinate system.

[0039] In this embodiment, for the convenience of description, taking any point on the axis of the first-stage drum 2 as the origin, the horizontal direction as the x-axis, and the vertical direction as the y-axis to establish a plane rectangular coordinate system, and the positive direction of the x-axis is the flowing direction of the working fluid, that is, the direction from the liquid inlet end to the liquid outlet end of the liquid inlet tank 1. For example, in this embodiment Figure 1 the rightward direction is the positive direction of the x-axis, and the positive direction of the y-axis is the vertically upward direction; during use, in order to enable the filtrate from which magnetic impurities are separated to continue to flow downward along the first outer cylinder 22 after the first outer cylinder 22 and the second outer cylinder 32 are squeezed, to avoid the backflow of the filtrate and improve the squeezing effect, the axis of the above-mentioned second-stage drum 3 is located in the first quadrant of the above-mentioned plane rectangular coordinate system. In this way, when the first outer cylinder 22 and the second outer cylinder 32 squeeze the magnetic impurities, the squeezed filtrate will not move in the direction opposite to the first outer cylinder 22, but will continue to move along with the first outer cylinder 22 and finally enter the liquid inlet tank 1 and be discharged externally, improving the squeezing effect of the magnetic impurities. Preferably, in order to improve the adsorption effect, the first magnetic adsorption area 23 should at least extend into the fourth quadrant to prevent the magnetic impurities from falling off the first-stage drum 2.

[0040] The magnetic separation device provided by the embodiment of the present invention, as Figure 1 shown, a water baffle 4 is provided at the liquid inlet end of the liquid inlet tank 1; one end of the water baffle 4 away from the liquid inlet tank 1 is rotatably arranged so that the water baffle 4 can swing with the impact of the working fluid.

[0041] In this embodiment, a water baffle 4 is provided at the liquid inlet end of the liquid inlet tank 1, and the water baffle 4 is swingably arranged. When the working fluid enters the liquid inlet tank 1 through the liquid inlet end of the liquid inlet tank 1, the water baffle 4 can play a role in equalizing the liquid to make the working fluid flowing onto the surface of the first outer cylinder 22 homogenized. Moreover, the water baffle 4 preferably has a U-shaped structure to prevent the working fluid from flowing out of the liquid inlet tank 1 directly without passing through the first-stage drum 2. During use, when the inflow rate of the working fluid is small, the lower end of the water baffle 4 moves downward, the opening decreases, and the flow resistance is large, and the working fluid is evenly distributed to the entire surface of the first outer cylinder 22; when the inflow rate of the working fluid is large, the liquid level at the liquid inlet end becomes higher, the impact force on the water baffle 4 becomes larger, the water baffle 4 moves, and the opening cross-section becomes larger, and the passing amount of the working fluid becomes larger; ultimately, regardless of the flow rate, the working fluid passing through the surface of the first outer cylinder 22 is relatively uniform.

[0042] The magnetic separation device provided by the embodiment of the present invention further includes an adjustment component; the adjustment component is used to adjust the gap between the first outer cylinder 22 and the second outer cylinder 32, thereby improving the squeezing effect. At the same time, it can also adjust the distance between the first outer cylinder 22 and the second outer cylinder 32 according to the adsorption amount of magnetic impurities, avoiding damage to the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3. It should be noted that the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3 are initially in contact, but there will be a certain amount of magnetic impurities between them during use, so that a certain gap is separated by the magnetic impurities, and this gap is filled with magnetic impurities. Further, when the gap between the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3 becomes larger, the control system can determine that the magnetic impurities adsorbed on the surfaces of the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3 increase at this time. At this time, it is necessary to increase the rotation speeds of the first outer cylinder 22 and the second outer cylinder 32 to improve the adsorption effect of the working fluid. Therefore, the gap between the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3 is positively correlated with the rotation speed of the first outer cylinder 22 of the primary roller 2; or, the magnetic property of the first magnetic roller 21 of the primary roller 2 can be adjusted by detecting the gap between the first outer cylinder 22 of the primary roller 2 and the second outer cylinder 32 of the secondary roller 3 to ensure the adsorption effect of the magnetic impurities in the working fluid.

[0043] Optionally, in this embodiment, the adjustment component includes an elastic member; both ends of the elastic member are rotatably connected to the rotating shafts of the first outer cylinder 22 and the second outer cylinder 32. The elastic member can be a spring, etc.; or, the above adjustment component can also adopt a telescopic cylinder such as a cylinder or an oil cylinder.

[0044] Another embodiment of the present invention further provides a production system, including the magnetic separation device described in any of the above embodiments.

[0045] Optionally, in this embodiment, the above production system can be a sheet metal processing system. The sheet metal processing system removes the oxide scale on the surface of the metal sheet by wet shot peening, and the above magnetic separation device is used to separate the oxide scale in the working fluid; or, in this embodiment, the above production system can also be a steel manufacturing system. For example, when hot rolling steel, the oxide scale on the surface of the steel is washed away by using a working fluid, and the above magnetic separation device is used to separate the oxide scale in the working fluid.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "primary" and "secondary" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A magnetic separation device, characterized in that: include: A liquid inlet tank (1) for receiving a working liquid containing magnetic impurities, and a primary roller (2) and a secondary roller (3) arranged in sequence; The first-stage roller (2) comprises a first magnetic roller (21) and a first outer cylinder (22); the first magnetic roller (21) is fixedly arranged in the first outer cylinder (22); the first outer cylinder (22) can rotate relative to the first magnetic roller (21); the first magnetic roller (21) forms a first magnetic attraction area (23) and a first non-magnetic area (24) on the surface of the first outer cylinder (22); the first magnetic attraction area (23) is used to absorb magnetic impurities; The secondary roller (3) comprises a second magnetic roller (31) and a second outer cylinder (32); the second magnetic roller (31) is fixedly arranged in the second outer cylinder (32); the second outer cylinder (32) can rotate relative to the second magnetic roller (31); the second magnetic roller (31) forms a second magnetic attraction area (33) and a second non-magnetic area (34) on the surface of the second outer cylinder (32); a line connecting any point on the axis of the secondary roller (3) and any point on the axis of the primary roller (2) passes through the second magnetic attraction area (33) and the first non-magnetic area (24); The bottom of the liquid inlet tank (1) is provided with a recessed structure matching the first outer cylinder (22), and a portion of the first outer cylinder (22) is located in the recessed structure; A water baffle (4) is provided at the liquid inlet end of the liquid inlet groove (1); the water baffle (4) is in a U-shaped structure, and one end of the water baffle (4) away from the liquid inlet groove (1) is rotatably arranged so that the water baffle (4) can swing with the impact of the working fluid.

2. The magnetic separation device according to claim 1, characterized in that: The first outer cylinder (22) and the second outer cylinder (32) rotate in opposite directions.

3. The magnetic separation device according to claim 1, characterized in that: Along the rotation direction of the second outer cylinder (32), the magnetism of the second magnetic roller (31) is enhanced.

4. The magnetic separation device according to claim 1, characterized in that: The magnetism of the portion of the first magnetic attraction area (23) in contact with the working fluid is stronger than the magnetism of the remaining portion of the first magnetic attraction area (23).

5. The magnetic separation device according to any one of claims 1 to 4, characterized in that: With any point on the axis of the primary roller (2) as the origin, the horizontal direction as the x-axis, the vertical direction as the y-axis as a plane rectangular coordinate system, the working fluid flow direction as the positive direction of the x-axis, and the vertical upward direction as the positive direction of the y-axis; the axis of the secondary roller (3) is located in the first quadrant of the plane rectangular coordinate system.

6. The magnetic separation device according to any one of claims 1 to 4, characterized in that: It also includes an adjustment component; the adjustment component is used to adjust the gap between the first outer cylinder (22) and the second outer cylinder (32).

7. The magnetic separation device according to claim 6, characterized in that: The adjustment component comprises an elastic member; two ends of the elastic member are rotatably connected to the rotating shafts of the first outer cylinder (22) and the second outer cylinder (32) respectively.

8. A production system, characterized in that: Comprising the magnetic separation device as described in any one of claims 1 to 7.

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