Non-scraping type magnetic filtering device and system

Abstract

The utility model relates to a device for filtering iron powder from emulsified liquid, in particular to a non-scraping type magnetic filtering device and a non-scraping type magnetic filtering system, which are provided with a fixedly arranged sleeve and a magnetic drum which is positioned in an accommodating cavity in the sleeve and is supported to be rotatable, a partition plate which extends from the outer surface of the sleeve to the direction far away from the sleeve to separate the solution to be treated and separated substances thereof is arranged on the outer side of the sleeve; the magnetic force of the magnetic drum is suitable for penetrating through the wall of the sleeve to adsorb the separated matter from the solution to be treated to the outer surface of the sleeve and pulling the separated matter to slide on the outer surface of the sleeve to the surface of the partition plate, and separation of the separated matter is achieved under guiding of the partition plate. The non-scraping type magnetic filtering system comprises the non-scraping type magnetic filtering device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the device of filtering iron powder from emulsion, concretely relates to a kind of non-scratching magnetic filter device and system. BACKGROUND

[0002] In the process of strip cold rolling, magnetic filtration is one of the necessary equipment for filtering iron powder in emulsion system. So far, the magnetic filter used is horizontal or vertical magnetic rod type. Because the working part of the magnetic rod of this equipment is exposed, the surrounding equipment and ground are covered with oil and sludge, and the environment is very dirty.

[0003] For example, Chinese utility model patent CN213287261U discloses a magnetic drum filter device including a fixed part, a rotating part, a pipe, a scraping part, and a driving part. The fixed part has a magnetic part and a non-magnetic part formed on its surface. The rotating part is sleeved on the fixed part. At least part of the magnetic part is built into the pipe. The scraping part is in contact with the outer wall of the rotating part corresponding to the non-magnetic part. The driving part drives the rotating part to rotate around the fixed part. The ferromagnetic substances such as iron powder in the fluid are attracted when passing through the magnetic field part and are rotated together with the rotating part to the non-magnetic field part under the drive of the driving part. Then, the ferromagnetic substances are scraped off by the scraping part, thereby completing the separation of the ferromagnetic substances in the fluid. However, the separation of the ferromagnetic substances and the rotating part is still completed by scraping in the disclosed technology. SUMMARY

[0004] In view of the above prior art, the utility model provides a non-scratching magnetic filter device and system, which realizes the separation of ferromagnetic substances in a non-scratching manner.

[0005] One aspect of an embodiment of the utility model provides a non-scratching magnetic filter device, which has:

[0006] A fixed sleeve, which has a receiving cavity, and a partition plate extending from the outer surface of the sleeve to separate the solution to be treated and its separated substances;

[0007] A housing, the sleeve and the partition plate are fixed in the inner cavity of the housing, a first cavity for receiving the solution is formed on one side of the partition plate, and a second cavity for receiving the separated substances is formed on the other side of the partition plate; and

[0008] A magnetic drum located in the receiving cavity and supported to be rotatable, the magnetic drum is rotatably connected with the housing; the magnetic force of the magnetic drum is suitable for attracting the separated substances from the solution to be treated to the outer surface of the sleeve and dragging the separated substances to slide on the outer surface of the sleeve to the surface of the partition plate, and the separated substances fall into the second cavity under the guidance of the partition plate.

[0009] Further, the surface of the partition plate facing the second cavity is tangent to the outer surface of the sleeve.

[0010] Further, the partition plate extends vertically.

[0011] Further, the bottom of the partition plate is inclined to the second cavity.

[0012] Further, the non-scraping magnetic filtering device further comprises a purging unit for spraying gas to the outer surface of the sleeve, the direction of the gas sprayed by the purging unit being opposite to the rotation direction of the magnetic drum.

[0013] Further, the bottom of the housing is formed with a flow inlet for the solution to flow in, and the top of the housing is formed with a flow outlet for the solution to flow out.

[0014] Further, an oil sludge conveyor is further included, the inlet of the oil sludge conveyor being communicated with the second cavity, and the discharge outlet being connected with an oil sludge collecting tank to convey the separated substance into the oil sludge collecting tank.

[0015] Further, a strong magnet is arranged at the bottom of the second cavity corresponding to the inlet of the oil sludge conveyor.

[0016] In another aspect, the utility model discloses a non-scraping magnetic filtering system, comprising:

[0017] The non-scraping magnetic filtering device comprises a fixed sleeve, the sleeve has a containing cavity, and a partition plate is arranged outside the sleeve and extends away from the sleeve to separate the solution to be treated and the separated substance; a housing with a closed inner cavity, the sleeve and the partition plate are fixed in the inner cavity of the housing, a first cavity containing the solution is formed on one side of the partition plate, and a second cavity containing the separated substance is formed on the other side of the partition plate; and a magnetic drum located in the containing cavity and supported to be rotatable, the magnetic drum is rotatably connected with the housing; the magnetic force of the magnetic drum is suitable for adsorbing the separated substance from the solution to be treated to the outer surface of the sleeve through the wall of the sleeve, and dragging the separated substance to slide on the outer surface of the sleeve to the surface of the partition plate and making the separated substance fall into the second cavity under the guidance of the partition plate.

[0018] The mixing device comprises a tank body and a stirrer connected with the tank body to stir the solution inside the tank body; and

[0019] The conveying device is connected with the mixing device at one end and connected with the non-scraping magnetic filtering device at the other end to convey the solution in the mixing device into the first cavity.

[0020] Further, in the system, the non-scraping magnetic filtering device further comprises a discharge pump, an inlet of the discharge pump being communicated with the second cavity to transport the liquid in the second cavity to outside of the shell; upper and lower limit position switches for detecting the liquid level in the second cavity are arranged on the shell,

[0021] a controller being signal-connected with the upper and lower limit position switches and the discharge pump; when the liquid level reaches the upper limit position switch, the controller controls the discharge pump to discharge the liquid; and when the liquid level reaches the lower limit position, the controller controls the discharge pump to stop working.

[0022] According to the non-scraping magnetic filtering device and system, the magnetic filtering part is enclosed in the shell, and the source problem of pollution of the working place by oil sludge and other pollutants is eliminated, so that the working place becomes clean.

[0023] In the separation process, the ferromagnetic material is separated from the sleeve without scraping, so that the problem that the ferromagnetic material is not easy to scrape off from the surface of a magnetic drum or a magnetic strip is solved.

[0024] The device and system can separate more oil and water from the oil sludge, and reduce the sludge discharge. The device and system can eliminate the environmental pollution in the oil sludge filtering process, save oil consumption, and reduce the amount of solid waste. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of a non-scraping magnetic filtering device of an embodiment of the utility model.

[0026] Figure 2 is a connection structure schematic view of a sleeve and a magnetic drum of the utility model.

[0027] Figure 3 is a connection structure schematic view of a sleeve and a partition plate of an embodiment of the utility model.

[0028] Figure 4 is a connection structure schematic view of a sleeve and a partition plate of another embodiment of the utility model.

[0029] Figure 5 is a connection structure schematic view of a sleeve and a partition plate of still another embodiment of the utility model.

[0030] Figure 6 is a structural schematic view of a magnetic drum of an embodiment of the utility model.

[0031] Figure 7 is a principle schematic view of a non-scraping magnetic filtering system of an embodiment of the utility model.

[0032] Symbol explanation

[0033] 1. A magnetic filter device;

[0034] 10. A magnetic drum; 12. A drum body; 14. A magnetic strip;

[0035] 20. A sleeve; 22. A partition; 24. A containing cavity; A, A central axis;

[0036] 30. A housing; 32. A first cavity; 34. A second cavity; 36. An inflow; 38. An outflow; 40. A purge unit; 42. An upper limit position switch; 44. A lower limit position switch; 46. A discharge pump; 48. A strong magnet.

[0037] 100. A magnetic filter system;

[0038] 101. A mixing device; 102. A tank body; 104. A stirrer; 106. A conveying device; 108. An oil sludge conveyor; 110. An oil sludge collection tank. DETAILED DESCRIPTION

[0039] Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0040] Example 1

[0041] Figure 1 is a structural schematic view of a non-scraping magnetic filter device according to an embodiment of the present application. Figure 2 is a structural schematic view of a connection between a sleeve and a magnetic drum according to the present application.

[0042] As shown in Figure 1 and Figure 2 , the non-scraping magnetic filter device 1 has a sleeve 20 fixedly arranged and a magnetic drum 10 located inside the sleeve 20. The non-scraping magnetic filter device 1 according to the present application can separate the ferromagnetic substance attracted by the magnetic drum in a non-scraping manner.

[0043] The sleeve 20 has a containing cavity 24, which can be, for example, a circular hole. The sleeve 20 is provided with a partition 22 extending from the outer surface of the sleeve 20 to a direction away from the sleeve 20 to separate the solution to be treated and the separated substance, as shown in Figure 1 The left side space of the partition 22 is used to contain the solution to be treated, while the right side space of the partition 22 is used to contain the separated substance (i.e. the ferromagnetic substance such as iron filings and iron slag).

[0044] The non-scraping magnetic filter device 1 includes a housing 30 having a closed inner cavity. The sleeve 20 and the partition 22 are fixed in the inner cavity of the housing 30, forming a first cavity 32 containing the solution on one side of the partition 22 and a second cavity 34 containing the separated substance on the other side of the partition 22.

[0045] A magnetic drum 10, located within the receiving cavity 24 and supported for rotatability, is rotatably connected to the housing 30, for example, via bearings. The magnetic force of the magnetic drum 10 is suitable for adsorbing the separated material from the solution to be treated through the wall of the sleeve 20 to the outer surface of the sleeve 20 and for pulling the separated material to slide on the outer surface of the sleeve 20 into the second cavity 34. Under its own gravity, the separated material slides from the outer surface of the sleeve 20 onto the partition and falls into the second cavity 34. Figure 6 The diagram illustrates the structure of a magnetic drum 10 according to one embodiment, which has a drum body 12 and magnetic strips 14 arranged on the surface of the drum body 12.

[0046] like Figure 1 As shown, the magnetic drum 10 rotates clockwise, adsorbing ferromagnetic material from the solution in the first cavity 32 onto the outer surface of the sleeve 20. As the magnetic drum 10 rotates, the adsorbed ferromagnetic material slides on the outer surface of the sleeve 20 and passes over the top of the sleeve 20 into the second cavity 34. When the ferromagnetic material slides onto the partition 22, it moves downwards under its own gravity and the magnetic force of the magnetic drum 10. During its downward movement, the magnetic force of the magnetic drum 10 on the ferromagnetic material gradually decreases, and the ferromagnetic material eventually falls to the bottom of the second cavity 32.

[0047] The separation process between the ferromagnetic material and the sleeve 20 did not involve scraping, thus completely solving the problem that ferromagnetic materials are difficult to remove cleanly when scraped from the surface of the magnetic drum 10 or magnetic strip.

[0048] The surface of the partition 22 facing the second cavity 34 is tangent to the outer surface of the sleeve 20, which facilitates the sliding of the aforementioned ferromagnetic substances and other separation materials from the outer surface of the sleeve 20 to the partition 22.

[0049] Preferably, such as Figure 2 As shown, partition 22 extends vertically. However, partition 22 can also be inclined, for example, as shown in the figure. Figure 3 As shown, the bottom of the partition 22 slopes towards the second cavity 34. Of course, it can also be as follows... Figure 4 As shown, the bottom of the partition 22 slopes towards the side where the first cavity 32 is located. Or as... Figure 5 As shown, the partition 22 is vertically arranged, and its upper end is perpendicular to the outer surface of the sleeve 20.

[0050] like Figure 1 As shown, the non-scraping magnetic filter device 1 also includes a purging unit 40 that sprays gas onto the outer surface of the sleeve 20. The direction of the gas sprayed by the purging unit 40 is opposite to the rotation direction of the magnetic drum 10, which blows off the liquid carried on the ferromagnetic material and dries the ferromagnetic material.

[0051] The bottom of the shell 30 is formed with an inlet 36 for the solution to flow in, and the top of the shell 30 is formed with an outlet 38 for the solution to flow out. The solution flows from bottom to top in the first cavity 32, which can reduce the ferromagnetic substances from settling at the bottom of the first cavity 32.

[0052] As shown in Figure 1 The non-scratching magnetic filtering device further comprises a sludge conveyor 108, the inlet of the sludge conveyor 108 is communicated with the second cavity 34, and the outlet is connected with a sludge collecting tank 110 to convey the separated substances into the sludge collecting tank 110. The sludge conveyor 108 can be a spiral conveyor, for example.

[0053] In some embodiments, a strong magnet 48 is arranged on the lower side of the shell 30 corresponding to the position of the second cavity 34. The strong magnet 48 is used to attract the ferromagnetic substances in the second cavity 34, so that they gather at the inlet of the sludge conveyor 108, facilitating the sludge conveyor 108 to discharge the sludge outward.

[0054] Embodiment 2

[0055] This embodiment is improved and perfected on the basis of Embodiment 1, forming a non-scratching magnetic filtering system 100, which specifically comprises the non-scratching magnetic filtering device 1, a mixing device 101 and a conveying device 106 in Embodiment 1.

[0056] As shown in Figure 1 and Figure 7 The non-scratching magnetic filtering system 100 comprises a sleeve 20 fixedly arranged, the sleeve 20 has a receiving cavity 24, and a partition plate 22 extending from the outer surface of the sleeve 20 to a direction away from the sleeve 20 is arranged on the outer side of the sleeve 20 to separate the solution to be treated and the separated substances thereof; and a magnetic drum 10 located in the receiving cavity 24 and supported to be rotatable, the magnetic force of the magnetic drum 10 is suitable for adsorbing the separated substances from the solution to be treated to the outer surface of the sleeve 20 through the wall of the sleeve 20 and dragging the separated substances to slide on the outer surface of the sleeve 20 to the second cavity 34; the non-scratching magnetic filtering device 1 comprises a shell 30 with a closed inner cavity; the magnetic drum 10 is rotatably connected with the shell 30; the sleeve 20 and the partition plate 22 are fixed in the inner cavity of the shell 30, and the first cavity 32 for receiving the solution and the second cavity 34 for receiving the separated substances are formed on one side of the partition plate 22.

[0057] The mixing device 101 comprises a tank body 102 and a stirrer 104 connected with the tank body 102 to stir the solution inside the tank body 102.

[0058] The conveying device 106 is connected with the mixing device 101 at one end and connected with the non-scratching magnetic filtering device 1 at the other end, to convey the solution in the mixing device 101 to the first cavity 32.

[0059] The non-scraping magnetic filtering device 1 further comprises a discharge pump 46, an inlet of the discharge pump 46 being communicated with the second cavity 34 to transport the liquid in the second cavity 34 to the outside of the shell 30; the shell 30 is provided with an upper limit position switch 42 and a lower limit position switch 44 for detecting the liquid level in the second cavity 34,

[0060] The controller is signal connected with the upper limit position switch 42, the lower limit position switch 44 and the discharge pump 46 respectively, when the liquid level reaches the upper limit position switch 42, the controller controls the discharge pump 46 to discharge the liquid, and when the liquid level reaches the lower limit position, the controller controls the discharge pump 46 to stop working.

[0061] According to the non-scraping magnetic filtering device and system, the magnetic filtering part is enclosed in the shell 30, and the source problem of being polluted by oil sludge and other pollutants is eradicated, so that the working place becomes clean.

[0062] In the separation process, the ferromagnetic material is separated from the sleeve 20 without scraping, and the problem that the ferromagnetic material is not easy to scrape off from the surface of the magnetic drum 10 or the magnetic strip is solved.

[0063] The device and system can separate more oil and water from the oil sludge, and reduce the sludge discharge. The device and system can eliminate environmental pollution in the oil sludge filtering process, save oil consumption, and reduce solid waste. The sludge discharged by the oil sludge conveyor 108 can be further shaped into a cake by extrusion, which lays a foundation for subsequent stacking, drying, crushing and grinding, and changes waste into use.

[0064] The non-scraping magnetic filtering device and system of the preferred embodiment of the utility model are described in detail above, but those skilled in the art can make various modifications, changes, combinations, etc. on this basis, and these modifications, changes and combinations all fall within the protection scope of the claims of the present application.

Claims

1. Non-scraping magnetic filtering device, characterized in that, having: a fixedly arranged sleeve having a receiving cavity, an outer side of the sleeve being provided with a partition plate extending from an outer surface of the sleeve in a direction away from the sleeve to separate a solution to be treated and a separated product thereof; a housing, the sleeve and the partition plate being fixed in an inner cavity of the housing, a first cavity receiving the solution being formed on one side of the partition plate, and a second cavity receiving the separated product being formed on the other side of the partition plate; and a magnetic drum located in the receiving cavity and supported to be rotatable, the magnetic drum being rotatably connected with the housing; a magnetic force of the magnetic drum being adapted to adsorb the separated product from the solution to be treated to an outer surface of the sleeve through a wall of the sleeve and to drag the separated product to slide on the outer surface of the sleeve to a surface of the partition plate, the separated product falling into the second cavity under a guide of the partition plate.

2. The non-scratching magnetic filtering device according to claim 1, wherein a surface of the partition plate toward the second cavity is tangent to the outer surface of the sleeve.

3. The non-scratching magnetic filtering device according to claim 2, wherein the partition plate extends vertically.

4. The non-scratching magnetic filtering device according to claim 3, wherein a bottom of the partition plate is inclined to the second cavity.

5. The non-scratching magnetic filtering device according to claim 1, further comprising a blowing unit spraying gas to the outer surface of the sleeve, a direction of the gas sprayed by the blowing unit being opposite to a direction of rotation of the magnetic drum.

6. The non-scratching magnetic filtering device according to claim 1, wherein a bottom of the housing is formed with an inflow port for inflow of the solution, and a top of the housing is formed with an outflow port for outflow of the solution.

7. The non-scratching magnetic filtering device according to claim 1, further comprising a sludge conveyor, an inlet of the sludge conveyor being in communication with the second cavity, and an outlet being connected with a sludge collecting tank to convey the separated product into the sludge collecting tank.

8. The non-scratching magnetic filtering device according to claim 7, wherein a strong magnet is arranged at a bottom of the second cavity corresponding to the inlet of the sludge conveyor. including: a non-scratching magnetic filtering device, a fixedly arranged sleeve having a receiving cavity, an outer side of the sleeve being provided with a partition plate extending from an outer surface of the sleeve in a direction away from the sleeve to separate a solution to be treated and a separated product thereof; a housing having a closed inner cavity, the sleeve and the partition plate being fixed in an inner cavity of the housing, a first cavity receiving the solution being formed on one side of the partition plate, and a second cavity receiving the separated product being formed on the other side of the partition plate; and a magnetic drum located in the receiving cavity and supported to be rotatable, the magnetic drum being rotatably connected with the housing; a magnetic force of the magnetic drum being adapted to adsorb the separated product from the solution to be treated to an outer surface of the sleeve through a wall of the sleeve and to drag the separated product to slide on the outer surface of the sleeve to a surface of the partition plate and to make the separated product fall into the second cavity under a guide of the partition plate.

9. A non-scraping magnetic filtration system, characterized by, ​ ​ ​ A mixing device, comprising a tank body and a stirrer connected with the tank body to stir the solution inside the tank body; and A conveying device, one end of which is connected with the mixing device and the other end is connected with the non-scraping magnetic filtration device, to convey the solution in the mixing device into the first cavity.

10. The non-scraping magnetic filtration system according to claim 9, wherein The non-scraping magnetic filtration device further comprises: An outlet pump, the inlet of which is communicated with the second cavity to convey the liquid in the second cavity to the outside of the shell; the shell is provided with an upper limit position switch and a lower limit position switch for detecting the liquid level in the second cavity, A controller, which is signal connected with the upper limit position switch, the lower limit position switch and the outlet pump respectively; when the liquid level reaches the upper limit position switch, the controller controls the outlet pump to discharge the liquid; and when the liquid level reaches the lower limit position, the controller controls the outlet pump to stop working.

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