Slurry magnetic filtration apparatus and cleaning method

Abstract

The application provides a slurry magnetic filtering device and a cleaning method. The magnetic adsorption device of the device comprises a plurality of magnetic adsorption cylinders, and the magnetic adsorption cylinder comprises a cylinder body, a magnetic roller and a scraper ring. The magnetic roller is arranged in the cylinder body, and the magnetic roller can slide reciprocatingly relative to the scraper ring. The magnetic roller comprises a roller body, a permanent magnet, a guide end wing and a permanent magnet driving mechanism. The roller body can slide reciprocatingly relative to the scraper ring arranged outside the magnetic roller. The permanent magnet is arranged in the roller body. The guide end wing is connected with the free end of the roller body. The permanent magnet driving mechanism is connected with the permanent magnet and is used for driving the permanent magnet to move towards the guide end wing or away from the guide end wing. The slurry magnetic filtering device can realize the technical effect that the permanent magnet is used as the magnetic adsorption system, has a relatively high effective magnetic adsorption surface area, and can better solve the cleaning problem.

Description

Technical Field

[0001] This invention relates to the technical field of magnetic filtration equipment for slurries, and in particular to a magnetic filtration equipment for slurries and a cleaning method thereof. Background Technology

[0002] Currently, magnetic filtration equipment for slurries is an essential tool in industries such as new energy, chemical, food and pharmaceutical for removing magnetic substances from products. Among these, demagnetization effect (adsorption of magnetic impurities) and impurity removal are the two core indicators of this type of magnetic filtration equipment.

[0003] like Figure 1 and Figure 2 The figures show a schematic diagram and a physical image of a traditional magnetic filtration device for slurries. As can be seen, this device features a simple and compact structure, using a series connection of the flow tubes for single-tube flow, resulting in good demagnetization. However, the flow area is small, leading to low production efficiency. Crucially, the cleaning process is complex, requiring each magnetic rod to be individually disassembled, cleaned, and reassembled. This process is time-consuming, wastes manpower and resources, compromises assembly reliability, and is prone to leakage, posing a risk of sealing problems.

[0004] Furthermore, to address the aforementioned problems, Chinese Patent CN02107670.7 - Magnetic Filter and its family of patents or patent applications disclose a magnetic filter for removing magnetic particles from a fluid. The filter includes elongated, circumferentially spaced magnetic elements that capture particles carried in the fluid. The magnetic elements must be periodically cleaned by moving a scraper from one end of the housing to the other to remove particles from the elements. At the traveling end of the scraper, particles are scraped onto the non-magnetic end of the magnetic element (which contains residual magnetism), and the particles are flushed from the non-magnetic end with fluid flowing through an inlet and other openings provided on the housing.

[0005] The aforementioned patent optimizes the cleaning process by setting a non-magnetic zone at the end of the magnetic element (magnetic rod), raising and lowering the magnetic rod in conjunction with a scraper to "drive" magnetic impurities (including iron filings and other impurities) on the magnetic zone to the non-magnetic zone, and then rinsing the magnetic impurities on the non-magnetic zone.

[0006] Patents or patent applications that use a non-magnetic zone at the end and solve the cleaning problem by lifting and lowering, such as CN201810023450.0 - A backwashing magnetic filter, all have the same effect and will not be elaborated further.

[0007] Furthermore, Chinese patent application CN201711204017.9 addresses this issue from another perspective, disclosing a fully automatic magnetic filter. This filter includes a device cylinder, magnetic rollers, scrapers, and a motor. Four magnetic rollers are located inside the device cylinder. Each magnetic roller comprises an outer layer and an inner core, with the outer layer covering the inner core. The inner core includes a magnetic area and a non-magnetic area. The outer layers of the multiple magnetic rollers are connected via gear transmission. One of the outer layers of a magnetic roller is connected to a motor, which drives its rotation. The number of scrapers is equal to the number of magnetic rollers, with each scraper corresponding to one outer layer of a magnetic roller. When iron filings adsorbed on the outer layer rotate to the non-magnetic area, they are scraped off by the scrapers. Therefore, the actions of adsorbing and scraping off iron filings can be performed simultaneously, effectively improving work efficiency.

[0008] The aforementioned patent application differs from the one that sets a non-magnetic zone at the end. In order to improve the utilization rate of the longitudinally placed magnetic rod, that is, the entire magnetic rod has a magnetic adsorption effect in the length direction, but it sets a non-magnetic zone in the radial (constant) direction. Unlike the lifting and lowering scraping method to remove magnetic impurities, it uses a rotating method to perform the magnetic impurity scraping operation.

[0009] It should be noted that, after diligently performing the inventiveness search of this solution, the following technical documents are also provided for reference:

[0010] 1. CN201310460245.8 - Filtering device and its family of patents or patent applications;

[0011] 2. CN202211268446.3 - Magnetic Filter;

[0012] 3. CN201811395032.0 - Filters, etc.

[0013] In summary, all the technical solutions disclosed in the aforementioned prior art documents require sacrificing the effective magnetic adsorption surface area on the magnetic rod. That is, the lack of magnetism at the end sacrifices the magnetic adsorption surface area of ​​the effective length (axial) portion, and the lack of magnetism in the radial portion sacrifices the magnetic adsorption surface area of ​​the effective radial portion.

[0014] Of course, in order to solve the above problems, Chinese patent application CN201210240994.5 - A switchable passive magnetic filter uses an electromagnetic method to solve the problem. That is, when the power is turned on to generate magnetism, magnetic impurities are adsorbed; when the power is turned off to demagnetize, a cleaning operation is performed. However, it will bring great energy consumption problems when solving the cleaning problem, and this electromagnetic technology solution is gradually being marginalized in the industry. Summary of the Invention

[0015] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slurry magnetic filtration device and cleaning method that still uses permanent magnets as the magnetic adsorption system, has a high effective magnetic adsorption surface area, and can also solve the cleaning problem well.

[0016] The objective of this invention is achieved through the following technical solution:

[0017] A magnetic filtration device for slurry is used to allow fluid slurry to flow through and to adsorb magnetic impurities contained in the fluid slurry. It includes a magnetic adsorption device, which includes multiple magnetic adsorption cylinders. Each magnetic adsorption cylinder includes a cylinder body, a magnetic roller, and a scraper ring. The magnetic roller is built into the cylinder body and can reciprocate relative to the scraper ring sleeved outside the magnetic roller.

[0018] The slurry magnetic filtration equipment further includes: a parallel flow collection device and an impurity cleaning device, wherein the parallel flow collection device includes: an inlet flow collector, a transfer flow collector, and an outlet flow collector;

[0019] The plurality of magnetic adsorption cylinders are specifically divided into: a feeding cylinder group, a transfer cylinder group, and a discharging cylinder group. The feeding cylinder group is connected to the feeding collector and the transfer collector, the transfer cylinder group is connected to the transfer collector, and the discharging cylinder group is connected to the transfer collector and the discharging collector, so as to allow the fluid slurry to flow sequentially through the feeding collector, the feeding cylinder group, the transfer collector, the transfer cylinder group, the discharging cylinder group, and the discharging collector.

[0020] The magnetic roller includes: a roller body, a permanent magnet, a guide wing, and a permanent magnet driving mechanism. The roller body can reciprocate relative to the scraper ring sleeved outside the magnetic roller. The permanent magnet is housed in the roller body. The guide wing is connected to the free end of the roller body. The permanent magnet driving mechanism is connected to the permanent magnet and is used to drive the permanent magnet to move towards or away from the guide wing.

[0021] The impurity cleaning device is connected to the transfer collector.

[0022] In one embodiment, the feed cylinder assembly includes multiple magnetic adsorption cylinders connected in parallel.

[0023] In one embodiment, the feed collection component includes a feed valve, a feed bend, a feed collection cone, and a feed sealing plate. The feed bend is connected to the feed valve and the feed collection cone, respectively. The feed sealing plate covers the feed collection cone. The ends of each magnetic adsorption cylinder in the feed cylinder assembly are connected to the feed sealing plate, so that the ends of each magnetic adsorption cylinder in the feed cylinder assembly are connected to the feed collection cone.

[0024] In one embodiment, the transfer cylinder group specifically includes: a first group of multiple parallel magnetic adsorption cylinders and a second group of multiple parallel magnetic adsorption cylinders;

[0025] The transfer and collection device includes: a first transfer and collection end box, a second transfer and collection end box, and a third transfer and collection end box. The first transfer and collection end box is connected to the feed cylinder group and is also connected to the first end of each of the magnetic adsorption cylinders in the first group. The second transfer and collection end box is connected to the second end of each of the magnetic adsorption cylinders in the first group and the first end of each of the magnetic adsorption cylinders in the second group. The third transfer and collection end box is connected to the second end of each of the magnetic adsorption cylinders in the second group and the discharge cylinder group.

[0026] In one embodiment, the impurity cleaning device includes: a first discharge pipe, a first discharge valve, a second discharge pipe, a second discharge valve, a sludge discharge pipe, a sludge discharge valve, a recovery pipe, and a recovery valve. A first end of the first discharge pipe is connected to the transfer collector. The first discharge valve is disposed on the first discharge pipe. A second end of the first discharge pipe is connected to the first end of the second discharge pipe. The second discharge valve is disposed on the second discharge pipe. A second end of the second discharge pipe is connected to the inlet collector. The second end of the first discharge pipe is also connected to the first end of the sludge discharge pipe. The sludge discharge valve is disposed on the sludge discharge pipe. A first end of the recovery pipe is connected to the first end of the sludge discharge pipe. The recovery valve is disposed on the recovery pipe.

[0027] In one embodiment, the impurity cleaning device further includes: a first backflush pipe, a first backflush valve, a second backflush pipe, and a second backflush valve. The first backflush pipe is connected to the feed collection device, the first backflush valve is disposed on the first backflush pipe, the second backflush pipe is connected to the discharge collection device, and the second backflush valve is disposed on the second backflush pipe.

[0028] In one embodiment, the discharge cylinder assembly includes multiple magnetic adsorption cylinders connected in parallel.

[0029] In one embodiment, the discharge collection component includes a discharge valve, a discharge bend, a discharge collection cone, and a discharge sealing plate. The discharge bend is connected to the discharge valve and the discharge collection cone, respectively. The discharge sealing plate covers the discharge collection cone. The ends of each magnetic adsorption cylinder in the discharge cylinder assembly are connected to the discharge sealing plate, so that the ends of each magnetic adsorption cylinder in the discharge cylinder assembly are connected to the discharge collection cone.

[0030] In one embodiment, the slurry magnetic filtration device further includes: a support frame, a lifting drive component, and a collecting support component. The lifting drive component is disposed on the support frame, and the driving end of the lifting drive component is connected to the collecting support component. The fixed ends of each roller away from its free end are respectively connected to the collecting support component. The permanent magnet driving mechanism is disposed on the collecting support component.

[0031] The scraper ring is mounted on the bracket.

[0032] In one embodiment, the lifting drive is a cylinder, a lifting motor, or a hydraulic lifter.

[0033] In one embodiment, the slurry magnetic filtration device further includes a lifting stroke limiting component, which includes a stroke rod, a stop end, and a support sleeve. One end of the stroke rod is connected to the collecting support component, the stroke rod movably passes through the bracket, the support sleeve is slidably sleeved outside the stroke rod, and the support sleeve is located between the bracket and the collecting support component. The stop end is disposed on the end of the stroke rod away from the collecting support component.

[0034] In one embodiment, the slurry magnetic filtration device further includes a locking device comprising: a locking tongue, a locking seat, a locking rod, and a locking drive member. The locking seat and the locking drive member are respectively disposed on the bracket, the locking tongue is disposed on the collecting support member, and the locking rod is connected to the locking drive member. The locking rod is used to lock the locking tongue on the locking seat.

[0035] In one embodiment, the permanent magnet drive mechanism includes: a mounting frame and a displacement drive component. The mounting frame is housed in the roller body, and the permanent magnet is disposed on the mounting frame. The displacement drive component is connected to the mounting frame and is used to drive the mounting frame to move toward or away from the guide end wing, thereby enabling the permanent magnet to move toward or away from the guide end wing.

[0036] The roller body is provided with a magnetic attraction adjustment area in the region near the guide end wing;

[0037] When the displacement drive drives the mounting bracket to abut against the guide wing, at least a portion of the permanent magnet is accommodated within the magnetic attraction adjustment area, thereby enabling the magnetic attraction adjustment area to have magnetic attraction capability from the permanent magnet. When the displacement drive drives the mounting bracket away from the guide wing, the permanent magnet simultaneously moves away from the magnetic attraction adjustment area, thereby causing the magnetic attraction adjustment area to lose magnetic attraction capability from the permanent magnet.

[0038] In one embodiment, the roller body is provided with a magnetic adjustment area in the region adjacent to the guide end wing;

[0039] The permanent magnet driving mechanism includes: a bottom airbag, a first air pipe, a top airbag, and a second air pipe. The bottom airbag and the top airbag are respectively housed at both ends of the roller body. The bottom airbag is clamped between the guide wing and the permanent magnet, so that the bottom airbag is housed in the magnetic attraction adjustment area. The first air pipe is housed in the roller body and communicates with the bottom airbag. The top airbag is housed in the roller body and is located on the side of the permanent magnet away from the bottom airbag. The second air pipe communicates with the top airbag.

[0040] In one embodiment, the permanent magnet includes a plurality of magnetic rings that are sequentially stacked within the roller body;

[0041] Alternatively, the permanent magnet may be a magnetic rod embedded within the roller body.

[0042] In one embodiment, the roller body is made of stainless steel or the roller body is made of a non-magnetic material;

[0043] The guide end wing is made of stainless steel or the roller body is made of non-magnetic material.

[0044] In one embodiment, the guide end wing includes a seal and a plurality of wing plates. The seal is connected to the free end of the roller body to isolate the internal space of the roller body from the internal space of the cylinder body through the seal. The plurality of wing plates are spaced apart on the seal.

[0045] When the free end of the roller swings, the wing plate is used to hold against the inner wall of the cylinder and maintain a gap between the free end of the roller and the inner wall of the cylinder.

[0046] In one embodiment, the scraper ring includes an inner sealing ring, an inner channel sealing cover, an outer sealing ring, and an outer sealing cover. The inner sealing ring is movably sleeved on the roller body, the inner channel sealing cover is sleeved on the outer side of the inner sealing ring, the outer sealing ring is sleeved on the outer side of the inner channel sealing cover, and the outer sealing cover is sleeved on the outer sealing ring.

[0047] In one embodiment, a smooth area is provided between the permanent magnet and the inner wall of the roller, and the smooth area is provided with lubricating oil.

[0048] A cleaning method for a slurry magnetic filtration device, used for cleaning any of the aforementioned slurry magnetic filtration devices, includes the following steps:

[0049] Stop feeding fluid slurry into the feed manifold and stop the fluid slurry outflow from the discharge manifold;

[0050] The fluid slurry in the magnetic filtration device is collected in the intermediate collection unit, and the slurry is recovered by the impurity cleaning device.

[0051] The magnetic roller is controlled to slide relative to the scraper ring sleeved on it. The roller body is provided with a magnetic attraction adjustment area in the region near the guide end wing, so that magnetic impurities attached to the roller body are scraped by the scraper ring onto the magnetic attraction adjustment area.

[0052] The permanent magnet driving mechanism is controlled to drive the permanent magnet to move away from the guide end wing, thereby causing the permanent magnet to move away from the magnetic attraction adjustment area at the same time, so that the magnetic attraction adjustment area loses the magnetic attraction ability from the permanent magnet and forms a non-magnetic area;

[0053] Cleaning fluid is introduced into the feed collector and / or the discharge collector to clean magnetic impurities on the non-magnetic area, and then flows out through the transfer collector and is collected by the impurity cleaning device.

[0054] Compared with the prior art, the present invention has at least the following advantages:

[0055] The roller of the aforementioned magnetic filtration device for slurry is provided with a magnetic attraction adjustment zone near the guide end wing. During normal magnetic adsorption operation, the magnetic attraction adjustment zone still has permanent magnets providing magnetic adsorption function, which can greatly increase the effective magnetic adsorption surface area. When a cleaning operation is required, the permanent magnet driving mechanism can be flexibly controlled to drive the permanent magnets to move away from the guide end wing, thereby causing the permanent magnets to move away from the magnetic attraction adjustment zone. This causes the magnetic attraction adjustment zone to lose the magnetic attraction ability from the permanent magnets, forming a non-magnetic zone. The magnetic impurities accumulated in the non-magnetic zone can then be effectively cleaned. This truly achieves the technical effect of still using permanent magnets as the magnetic adsorption system, while also having a high effective magnetic adsorption surface area and effectively solving the cleaning problem. Attached Figure Description

[0056] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 A schematic diagram of the structure of an existing magnetic filtration device for slurry;

[0058] Figure 2 Here is a physical image of an existing magnetic filtration device for slurry.

[0059] Figure 3 This is a schematic diagram of the structure of a slurry magnetic filtration device according to an embodiment of the present invention;

[0060] Figure 4 for Figure 3 A partial structural schematic diagram of the magnetic filtration device for slurry is shown.

[0061] Figure 5 for Figure 4 A partial structural schematic diagram of the magnetic filtration device for slurry is shown.

[0062] Figure 6 for Figure 5 A partial structural schematic diagram of the magnetic filtration device for slurry is shown.

[0063] Figure 7 for Figure 6 A schematic diagram of the slurry magnetic filtration device from another perspective;

[0064] Figure 8 for Figure 6 A schematic diagram of the slurry magnetic filtration device from another perspective;

[0065] Figure 9 for Figure 8 The diagram shown is a cross-sectional view of the magnetic filtration device for slurry along line AA.

[0066] Figure 10 This is a schematic diagram of the structure of a slurry magnetic filtration device according to another embodiment of the present invention;

[0067] Figure 11 This is a flowchart illustrating the steps of a slurry magnetic filtration device cleaning method according to an embodiment of the present invention. Detailed Implementation

[0068] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable the reader to gain a more thorough and complete understanding of the disclosure of the present invention.

[0069] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0071] like Figure 3 and Figure 4 As shown, a slurry magnetic filtration device 10 of one embodiment includes: a magnetic adsorption device 100, a parallel collection device 200, an impurity cleaning device 300, a support 400, a lifting drive 500, a collection support 600, a lifting stroke limiter 700, and a locking device 800. The magnetic adsorption device 100, the lifting drive 500, the lifting stroke limiter 700, and the locking device 800 are respectively connected to the support 400 to provide structural support. The slurry magnetic filtration device 10 is used to allow fluid slurry to flow through and adsorb magnetic impurities contained in the fluid slurry. It should be noted that the magnetic impurities described herein are magnetophilic impurities, which are impurities that can be magnetically adsorbed. These are impurities that need to be removed from slurries required by industries such as new energy, chemical, food, and pharmaceutical. For example, iron filings and other magnetophilic metals or alloys contained in liquid food slurries in the food industry are magnetic impurities, which will not be elaborated further here.

[0072] Please see Figure 5 The magnetic adsorption device 100 includes multiple magnetic adsorption cylinders 110. When the fluid slurry flows through the multiple magnetic adsorption cylinders 110, the magnetic adsorption cylinders 110 can adsorb the magnetic impurities contained in the fluid slurry. After the fluid slurry with the magnetic impurities removed flows out of the magnetic adsorption cylinders 110, it enters the next process for operation.

[0073] To better explain the various magnetic adsorption cylinders in terms of their function and circulation relationships, it is necessary to classify and group them. Please refer to [link / reference needed]. Figure 5The multiple magnetic adsorption cylinders 110 are specifically divided into: feed cylinder group 100a, transfer cylinder group 100b and discharge cylinder group 100c. After the fluid slurry flows sequentially through the feed cylinder group 100a, transfer cylinder group 100b and discharge cylinder group 100c, the magnetic adsorption process can be completed. The magnetic impurities contained in the fluid slurry will be adsorbed and remain in each of the magnetic adsorption cylinders in the feed cylinder group 100a, transfer cylinder group 100b and discharge cylinder group 100c. The feed cylinder group 100a, transfer cylinder group 100b and discharge cylinder group 100c are cleaned and the magnetic impurities are removed at preset intervals.

[0074] In this embodiment, the fluid slurry flows sequentially through the feed cylinder group 100a, the transfer cylinder group 100b, and the discharge cylinder group 100c, and is connected in series. When the fluid slurry flows into the feed cylinder group 100a, the magnetic adsorption cylinders in the feed cylinder group 100a are connected in parallel. Similarly, the magnetic adsorption cylinders in the discharge cylinder group 100c are also connected in parallel. Thus, the slurry channel design, which combines series and parallel connections, increases the flow area while ensuring the demagnetization effect, which can greatly increase the slurry flow volume per unit time, thereby improving the magnetic adsorption efficiency.

[0075] Please see Figure 5 The parallel collection device 200 includes: a feed collection component 210, a transfer collection component 220, and a discharge collection component 230. The feed cylinder group 100a is connected to the feed collection component 210 and the transfer collection component 220, the transfer cylinder group 100b is connected to the transfer collection component 220, and the discharge cylinder group 100c is connected to the transfer collection component 220 and the discharge collection component 230, respectively. It is used to make the fluid slurry flow sequentially through the feed collection component 210, the feed cylinder group 100a, the transfer collection component 220, the transfer cylinder group 100b, the discharge cylinder group 100c, and the discharge collection component 230 to complete the slurry flow process.

[0076] Please see Figure 5The feed cylinder group 100a includes multiple parallel magnetic adsorption cylinders 110, meaning that when the fluid slurry flows into the feed cylinder group 100a, the fluid slurry simultaneously flows into the multiple parallel magnetic adsorption cylinders 110. The feed collection unit 210 includes: a feed valve 211, a feed bend 212, a feed collection cone 213, and a feed sealing plate 214. The feed bend 212 is connected to the feed valve 211 and the feed collection cone 213 respectively. The feed sealing plate 214 covers the feed collection cone 213. The ends of each magnetic adsorption cylinder 110 of the feed cylinder group 100a are connected to the feed sealing plate 214 respectively, so that the ends of each magnetic adsorption cylinder 110 of the feed cylinder group 100a are connected to the feed collection cone 213 respectively. In this way, the feed collection cone 213 and the feed sealing plate 214 form a sealed space. This sealed space is used to transfer and collect the fluid slurry. Then the fluid slurry is simultaneously fed into each magnetic adsorption cylinder 110 in the feed cylinder group 100a.

[0077] Please see Figure 5 The discharge cylinder assembly 100c includes multiple parallel magnetic adsorption cylinders 110. When the fluid slurry enters the discharge cylinder assembly 100c simultaneously, it flows synchronously into the multiple parallel magnetic adsorption cylinders 110, and similarly, flows synchronously out of the multiple parallel magnetic adsorption cylinders 110 into the discharge collector 230. The discharge collector 230 includes a discharge valve 231, a discharge bend 232, a discharge collecting cone 233, and a discharge sealing plate 234. The discharge bend 232 is connected to the discharge valve 231 and the discharge collecting cone 233, respectively. The discharge sealing plate 234 covers the discharge collecting cone 233. The ends of each magnetic adsorption cylinder 110 in the discharge cylinder assembly 100c are connected to the discharge sealing plate 234, allowing the ends of each magnetic adsorption cylinder 110 in the discharge cylinder assembly 100c to... Do not connect with the discharge collecting cone 233. In this way, the discharge collecting cone 233 and the discharge sealing plate 234 form a sealed space. This sealed space is used to transfer and collect the fluid slurry. At this time, the fluid slurry has flowed through the entire slurry magnetic filter 10 and completed the magnetic impurity adsorption and removal operation. The fluid slurry flowing out from the discharge cylinder group 100c can enter the next process for operation. For example, the positive and negative electrode slurries in the new energy industry can enter the electrode coating process.

[0078] Please see Figure 5The transfer cylinder group 100b specifically includes: multiple parallel first group magnetic adsorption cylinders 110b and multiple parallel second group magnetic adsorption cylinders 120b. The transfer collector 220 includes: a first transfer collector end box 221, a second transfer collector end box 222, and a third transfer collector end box 223. The first transfer collector end box 221 is connected to the feed cylinder group 100a and is also connected to the first end of each magnetic adsorption cylinder 110b in the first group. The second transfer collector end box 222 is connected to the second end of each magnetic adsorption cylinder 110b in the first group and the first end of each magnetic adsorption cylinder 120b in the second group. The third transfer collector end box 223 is connected to the second end of each magnetic adsorption cylinder 120b in the second group and to the discharge cylinder group 100c.

[0079] Please refer to the following: Figure 5 and Figure 8 The fluid slurry flow pattern of the above-mentioned magnetic filtration device 10 is as follows: the fluid slurry flows into the feed collector 210, then flows in parallel into the feed cylinder group 100a, collects in the first transfer collector box 221, then flows in parallel into the first magnetic adsorption cylinder 110b, collects in the second transfer collector box 222, then flows in parallel into the second magnetic adsorption cylinder 120b, collects in the third transfer collector box 223, then flows in parallel into the discharge cylinder group 100c, and finally flows into the discharge collector 230. In this way, the fluid slurry flows through the series and parallel design of the flow channel of this technical solution, which increases the flow area while ensuring the demagnetization effect, and can increase the slurry flow volume per unit time to a large extent, thereby improving the magnetic adsorption efficiency.

[0080] Please refer to the following: Figure 6 and Figure 9 The magnetic adsorption cylinder 110 includes a cylinder body 111, a magnetic roller 112, and a scraper ring 123. The magnetic roller 112 is built into the cylinder body 111 and can reciprocate relative to the scraper ring 123 sleeved on the outside of the magnetic roller 112. When the fluid slurry enters the magnetic adsorption cylinder 110, it will fill and flow in the channel space formed by the inner wall of the cylinder body 111 and the outer wall of the magnetic roller 112. When magnetic adsorption impurities accumulate on the magnetic roller 112, since the scraper ring 123 is slidably sleeved on the outside of the magnetic roller 112, after the magnetic roller 112 slides relative to the scraper ring 123 sleeved on the outside of the magnetic roller 112, the magnetic adsorption impurities on the magnetic roller 112 are scraped off by the scraper ring 123 to the free end of the magnetic roller 112, and then can be more easily cleaned away.

[0081] Please see Figure 9The magnetic roller 112 includes: a roller body 1121, a permanent magnet 1122, a guide wing 1123, and a permanent magnet driving mechanism 1124. The roller body 1121 can reciprocate relative to the scraper ring 123 sleeved outside the magnetic roller 112. The permanent magnet 1122 is housed inside the roller body 1121. The guide wing 1123 is connected to the free end of the roller body 1121. The permanent magnet driving mechanism 1124 is connected to the permanent magnet 1122. The permanent magnet driving mechanism 1124 is used to drive the permanent magnet 1122 to move towards or away from the guide wing 1123. Based on the magnetism of the permanent magnet 1122, when the fluid slurry fills and flows in the channel space enclosed by the inner wall of the cylinder 111 and the outer wall of the magnetic roller 112, the outer wall of the roller body 112 will magnetically adsorb magnetic impurities. When the outer wall of the roller body 1121 is rich in magnetic impurities and has reached the threshold for cleaning, a cleaning operation needs to be performed.

[0082] Please see Figure 11 To better illustrate the innovative contributions of this technical solution to the prior art, this technical solution also provides a cleaning method for a slurry magnetic filtration device, used to clean any of the aforementioned slurry magnetic filtration devices, comprising the following steps:

[0083] S110: Stop supplying fluid slurry to the feed manifold and stop the fluid slurry outflow from the discharge manifold.

[0084] When the outer wall of the roller is rich in magnetic impurities and has reached the threshold for cleaning, a cleaning operation needs to be performed. Before this, the feeding of fluid slurry to the feed collector needs to be stopped, and the flow of fluid slurry out of the discharge collector needs to be stopped to prepare for cleaning the magnetic impurities.

[0085] S120: The fluid slurry in the magnetic filtration device is collected in the transfer collector, and the slurry is recovered by the impurity cleaning device.

[0086] When the outflow of the discharge collection device is insufficient, the impurity cleaning device, which is set at the lowest position, allows the fluid slurry to flow out of the impurity cleaning device by its own gravity. The slurry needs to be collected for recycling and is kept for later use, which further saves raw material costs and prevents waste.

[0087] During step S120, high-pressure gas is simultaneously introduced into the feed collector and the discharge collector to better assist the fluid slurry in being discharged from the impurity cleaning device.

[0088] S130: Control the magnetic roller to slide relative to the scraper ring sleeved on it. The roller body is provided with a magnetic attraction adjustment area in the region near the guide end wing, so that magnetic impurities attached to the roller body are scraped by the scraper ring onto the magnetic attraction adjustment area.

[0089] By controlling the magnetic roller to slide relative to the scraper ring sleeved on its outside, the magnetic impurities attached to the roller body can be scraped by the scraper ring onto the magnetic attraction adjustment area. At this time, the magnetic impurities outside the entire magnetic roller are concentrated in the magnetic attraction adjustment area.

[0090] S140: Control the permanent magnet driving mechanism to drive the permanent magnet to move away from the guide end wing, thereby causing the permanent magnet to move away from the magnetic attraction adjustment area at the same time, so that the magnetic attraction adjustment area loses the magnetic attraction ability from the permanent magnet and forms a non-magnetic area.

[0091] It is important to note that when the magnetic roller is performing its normal magnetic attraction operation, the free end of the roller body, i.e., the area near the guide wing, is also essentially filled with permanent magnets. This means that the area of ​​the roller body submerged in the fluid slurry retains the magnetic properties imparted by the permanent magnets. Therefore, compared to existing technologies where a non-magnetic area (which is also submerged in the fluid slurry) needs to be fixedly maintained, this technical solution provides a magnetic attraction adjustment area near the guide wing. During normal magnetic attraction, this adjustment area still retains the magnetic attraction function imparted by permanent magnets, significantly increasing the effective magnetic attraction surface area. Based on existing technical literature and commercially available equipment, the non-magnetic area is typically 3.5cm-10cm in length. If the roller body is made of stainless steel, this length may be even greater to eliminate the magnetic influence of the permanent magnets. Therefore, this non-magnetic area essentially loses its magnetic attraction capability. While retaining the function of attracting impurities, this technical solution still allows the magnetic adjustment area to perform the normal function of magnetically attracting impurities. When a cleaning operation is required, the permanent magnet driving mechanism can be flexibly controlled to drive the permanent magnet to move away from the guide end wing, thereby causing the permanent magnet to move away from the magnetic adjustment area. This causes the magnetic adjustment area to lose its magnetic attraction from the permanent magnet, forming a non-magnetic area. The magnetically attracted impurities accumulated in the non-magnetic area can then be effectively cleaned. This truly achieves the technical effect of still using permanent magnets as the magnetic adsorption system, while also having a high effective magnetic adsorption surface area and effectively solving the cleaning problem.

[0092] S150: Cleaning fluid is introduced into the feed collector and / or the discharge collector to clean magnetic impurities on the non-magnetic area, and flows out through the transfer collector, whereby the impurity cleaning device collects the contaminants.

[0093] To better explain the working principle of the permanent magnet drive mechanism, this technical solution provides the following two embodiments of the permanent magnet drive mechanism for reference:

[0094] Example 1

[0095] Please see Figure 9 The roller body 1121 has a magnetic attraction adjustment area 1121a near the guide end wing. The permanent magnet driving mechanism 1124 includes: a bottom airbag 11241, a first air tube 11242, a top airbag 11243, and a second air tube 11244. The bottom airbag 11241 and the top airbag 11243 are respectively housed at both ends of the roller body 1121. The bottom airbag 11241 is clamped between the guide end wing 1123 and the permanent magnet. Between 1122, the bottom airbag 11241 is housed in the magnetic attraction adjustment area 1121a, the first air tube 11242 is housed in the roller body 1121 and communicates with the bottom airbag 11241, the top airbag 11243 is housed in the roller body 1121 and the top airbag 11243 is located on the side of the permanent magnet 1122 away from the bottom airbag 11241, and the second air tube 11244 communicates with the top airbag 11243.

[0096] When the magnetic filtration equipment for slurry is performing its magnetic impurity adsorption function normally, the air in the bottom airbag 11241 is completely discharged through the first air pipe 11242, leaving the bottom airbag 11241 deflated. Simultaneously, air is injected into the top airbag 11243 through the second air pipe 11244, causing the top airbag 11243 to become inflated. This allows the permanent magnet 1122 to move along the inner wall of the roller 1121, with one end of the permanent magnet 1122 positioned within the magnetic attraction adjustment zone 1121a. At this time, the magnetic attraction adjustment zone 1121a is given magnetic function and can perform normal magnetic impurity adsorption. When the magnetic filtration equipment for slurry needs to be cleaned, the bottom airbag 11241 is inflated, and the top airbag 11243 is deflated. This is to move the bottom end of the permanent magnet away from the magnetic attraction adjustment zone, causing the magnetic attraction adjustment zone to lose its magnetic attraction from the permanent magnet and form a non-magnetic zone.

[0097] In this embodiment, the first air pipe and the second air pipe are used to connect to external suction devices, respectively.

[0098] It should be added that the airbag described in this case is not limited to using gas as the circulation medium, but can also be a liquid, such as liquid water or liquid oil, to change the state of the airbag when the medium is in circulation, so as to complete the movement function of the permanent magnet.

[0099] Example 2

[0100] Please see Figure 10The permanent magnet drive mechanism 1124b includes a mounting frame 11241b and a displacement drive member 11242b. The mounting frame is housed within the roller body, and the permanent magnet is disposed on the mounting frame. The displacement drive member is connected to the mounting frame and is used to drive the mounting frame to move towards or away from the guide wing, thereby enabling the permanent magnet to move towards or away from the guide wing. The roller body has a magnetic attraction adjustment area in the region adjacent to the guide wing. When the displacement drive member drives the mounting frame to abut against the guide wing, at least a portion of the permanent magnet is housed within the magnetic attraction adjustment area, enabling the magnetic attraction adjustment area to have magnetic attraction from the permanent magnet. When the displacement drive member drives the mounting frame away from the guide wing, the permanent magnet simultaneously moves away from the magnetic attraction adjustment area, causing the magnetic attraction adjustment area to lose magnetic attraction from the permanent magnet. In this embodiment, the displacement drive component 11242b is a power device such as a cylinder or a lifting motor that can drive the mounting frame and the permanent magnet to move along the inside of the roller.

[0101] It should be noted that, in order to solve the technical problem of permanent magnet drive in this case, those skilled in the art can choose the technical solutions provided in Embodiment 1 or Embodiment 2 above. Of course, those skilled in the art can also use other specific structures to realize the function of the permanent magnet drive mechanism according to the actual situation, which should also be within the protection scope of this case.

[0102] In this embodiment, the permanent magnet is a magnetic rod built into the roller body, or the permanent magnet includes several magnetic rings stacked sequentially in the roller body. Of course, as long as the permanent magnet can enable the outer wall of the roller body to have magnetic adsorption function to achieve the effect of adsorbing magnetic impurities, those skilled in the art can flexibly choose permanent magnets of different forms or structures, all of which are within the protection scope of this case.

[0103] In this embodiment, the roller body is made of stainless steel or a non-magnetic material. Furthermore, the guide end wing is made of stainless steel or a non-magnetic material. Of course, those skilled in the art can also select other materials according to the actual situation, which should also be considered within the protection scope of this case.

[0104] Please see Figure 6The guide end wing 1123 includes a seal 11231 and several wing plates 11232. The seal is connected to the free end of the roller body to isolate the internal space of the roller body from the internal space of the cylinder body. The several wing plates are spaced apart on the seal. When the free end of the roller body swings, the wing plates are used to hold against the inner wall of the cylinder body and maintain a gap between the free end of the roller body and the inner wall of the cylinder body. In this way, when the roller body moves relative to the cylinder body, the several wing plates 11232 can prevent the roller body from directly contacting the cylinder body. Especially when both are made of stainless steel, it can better prevent the two from being magnetically attracted together, reduce scratching problems and movement resistance problems. Furthermore, the use of multiple wing plates 11232 can better reduce the impact on the flow space of the fluid slurry.

[0105] In this embodiment, the scraper ring includes an inner sealing ring, an inner channel sealing cover, an outer sealing ring, and an outer sealing cover. The inner sealing ring is movably sleeved on the outside of the roller body, the inner channel sealing cover is sleeved on the outside of the inner sealing ring, the outer sealing ring is sleeved on the outside of the inner channel sealing cover, and the outer sealing cover is sleeved on the outside of the outer sealing ring. This improves the sealing performance, facilitates the scraping of magnetic impurities on the roller body, and also enhances the mechanical strength of the physical structure.

[0106] In this embodiment, a smooth area is provided between the permanent magnet and the inner wall of the roller, and the smooth area is provided with lubricating oil. In this way, when the permanent magnet driving mechanism drives the permanent magnet to move relative to the roller, the moving resistance can be greatly reduced, thereby reducing the scratching problem and moving resistance problem when the permanent magnet and the roller move relative to each other.

[0107] Please see Figure 6The impurity cleaning device 300 is connected to the transfer collector 220. The impurity cleaning device 300 includes: a first discharge pipe body 310, a first discharge valve 320, a second discharge pipe body 330, a second discharge valve 340, a sludge discharge pipe body 350, a sludge discharge valve 360, a recovery pipe body 370, and a recovery valve 380. The first end of the first discharge pipe body is connected to the transfer and collection component. The first discharge valve is disposed on the first discharge pipe body. The second end of the first discharge pipe body is connected to the first end of the second discharge pipe body. The second discharge valve is disposed on the second discharge pipe body. The second end of the second discharge pipe body is connected to the inlet and collection component. The second end of the first discharge pipe body is also connected to the first end of the sludge discharge pipe body. The sludge discharge valve is disposed on the sludge discharge pipe body. The first end of the recovery pipe body is connected to the first end of the sludge discharge pipe body. The recovery valve is disposed on the recovery pipe body. Thus, the impurity cleaning device 300 can better collect slurry recovery material and sludge separately.

[0108] Please see Figure 6 The impurity cleaning device 300 further includes: a first backflushing pipe 390a, a first backflushing valve 390b, a second backflushing pipe 390c, and a second backflushing valve 390d. The first backflushing pipe is connected to the inlet collection component, and the first backflushing valve is disposed on the first backflushing pipe. The second backflushing pipe is connected to the outlet collection component, and the second backflushing valve is disposed on the second backflushing pipe. Thus, the cleaning fluid can be injected and backflushed, or the recycled material can be pressurized and recycled, through the first backflushing pipe 390a, the first backflushing valve 390b, the second backflushing pipe 390c, and the second backflushing valve 390d.

[0109] Please see Figure 5 A lifting drive component 500 is mounted on a bracket 400. The driving end of the lifting drive component 500 is connected to the collecting support component 600. The fixed ends of each roller, away from their free ends, are respectively connected to the collecting support component 600. The permanent magnet driving mechanism is mounted on the collecting support component, and the scraper ring is mounted on the bracket. Thus, the lifting drive component 500 can be controlled to drive the collecting support component 600 to move, thereby causing each roller to move relative to the cylinder and the scraper ring. In this embodiment, the lifting drive component is a cylinder, a lifting motor, or a hydraulic lifter.

[0110] Please see Figure 7The lifting stroke limiting component 700 includes: a stroke rod 710, a stop end 720, and a support sleeve 730. One end of the stroke rod is connected to the collecting support component, and the stroke rod movably passes through the bracket. The support sleeve is slidably sleeved outside the stroke rod and is located between the bracket and the collecting support component. The stop end is located on the end of the stroke rod away from the collecting support component. By setting the stroke rod 710, a better sliding guidance effect can be provided when the roller moves relative to the cylinder and the scraper ring. The stop end 720 is located at the tail end of the stroke rod 710 away from the collecting support component. When the roller completes its stroke, the stop end 720 just abuts against the bracket, thus completing the limiting and stopping effect. The support sleeve 730 is located between the bracket and the collecting support component, which can ensure that when the roller returns to the cylinder, the guide wing is prevented from falling into the preset position, thereby avoiding structural interference with the bottom structure of the cylinder caused by poor limiting effect of the guide wing.

[0111] Please see Figure 7 The locking device 800 includes a locking tongue 810, a locking seat 820, a locking rod 830, and a locking drive component 840. The locking seat and the locking drive component are respectively disposed on the bracket, the locking tongue is disposed on the collecting support component, and the locking rod is connected to the locking drive component. The locking rod is used to lock the locking tongue on the locking seat. Thus, when the roller body returns to the cylinder body, that is, when the slurry magnetic filtration equipment performs normal magnetic impurity adsorption work, the locking device 800 locks the collecting support component on the bracket, which can avoid the problem of relative displacement between the roller body and the cylinder body, and further ensure the stability of the magnetic adsorption work.

[0112] Compared with the prior art, the present invention has at least the following advantages:

[0113] The roller of the aforementioned magnetic filtration device for slurry is provided with a magnetic attraction adjustment zone near the guide end wing. During normal magnetic adsorption operation, the magnetic attraction adjustment zone still has permanent magnets providing magnetic adsorption function, which can greatly increase the effective magnetic adsorption surface area. When a cleaning operation is required, the permanent magnet driving mechanism can be flexibly controlled to drive the permanent magnets to move away from the guide end wing, thereby causing the permanent magnets to move away from the magnetic attraction adjustment zone. This causes the magnetic attraction adjustment zone to lose the magnetic attraction ability from the permanent magnets, forming a non-magnetic zone. The magnetic impurities accumulated in the non-magnetic zone can then be effectively cleaned. This truly achieves the technical effect of still using permanent magnets as the magnetic adsorption system, while also having a high effective magnetic adsorption surface area and effectively solving the cleaning problem.

[0114] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A magnetic filtration device for slurry, used for allowing fluid slurry to flow through and adsorbing magnetic impurities contained in the fluid slurry, comprising a magnetic adsorption device, the magnetic adsorption device comprising a plurality of magnetic adsorption cylinders, the magnetic adsorption cylinder comprising a cylinder body, a magnetic roller and a scraper ring, the magnetic roller being built into the cylinder body, the magnetic roller being capable of reciprocating sliding relative to the scraper ring sleeved outside the magnetic roller; Its features are, The slurry magnetic filtration equipment further includes: a parallel flow collection device and an impurity cleaning device, wherein the parallel flow collection device includes: an inlet flow collector, a transfer flow collector, and an outlet flow collector; The plurality of magnetic adsorption cylinders are specifically divided into: a feeding cylinder group, a transfer cylinder group, and a discharging cylinder group. The feeding cylinder group is connected to the feeding collector and the transfer collector, the transfer cylinder group is connected to the transfer collector, and the discharging cylinder group is connected to the transfer collector and the discharging collector, so as to allow the fluid slurry to flow sequentially through the feeding collector, the feeding cylinder group, the transfer collector, the transfer cylinder group, the discharging cylinder group, and the discharging collector. The magnetic roller includes: a roller body, a permanent magnet, a guide wing, and a permanent magnet driving mechanism. The roller body can reciprocate relative to the scraper ring sleeved outside the magnetic roller. The permanent magnet is housed in the roller body. The guide wing is connected to the free end of the roller body. The permanent magnet driving mechanism is connected to the permanent magnet and is used to drive the permanent magnet to move towards or away from the guide wing. The impurity cleaning device is connected to the transfer and collection component; The permanent magnet drive mechanism includes: a mounting frame and a displacement drive component. The mounting frame is housed in the roller body, and the permanent magnet is disposed on the mounting frame. The displacement drive component is connected to the mounting frame and is used to drive the mounting frame to move towards or away from the guide end wing, thereby enabling the permanent magnet to move towards or away from the guide end wing. The roller body is provided with a magnetic attraction adjustment area in the region near the guide end wing; When the displacement drive drives the mounting bracket to abut against the guide wing, at least a portion of the permanent magnet is accommodated within the magnetic attraction adjustment area, thereby enabling the magnetic attraction adjustment area to have magnetic attraction capability from the permanent magnet. When the displacement drive drives the mounting bracket away from the guide wing, the permanent magnet simultaneously moves away from the magnetic attraction adjustment area, thereby causing the magnetic attraction adjustment area to lose magnetic attraction capability from the permanent magnet.

2. The slurry magnetic filtration device according to claim 1, characterized in that, The feed cylinder assembly includes multiple magnetic adsorption cylinders connected in parallel.

3. The slurry magnetic filtration device according to claim 2, characterized in that, The feed collection device includes a feed valve, a feed bend, a feed collection cone, and a feed sealing plate. The feed bend is connected to the feed valve and the feed collection cone, respectively. The feed sealing plate covers the feed collection cone. The ends of each magnetic adsorption cylinder in the feed cylinder assembly are connected to the feed sealing plate, so that the ends of each magnetic adsorption cylinder in the feed cylinder assembly are connected to the feed collection cone, respectively.

4. The slurry magnetic filtration device according to claim 1, characterized in that, The transfer cylinder group specifically includes: a first group of multiple parallel magnetic adsorption cylinders, and a second group of multiple parallel magnetic adsorption cylinders; The transfer and collection device includes: a first transfer and collection end box, a second transfer and collection end box, and a third transfer and collection end box. The first transfer and collection end box is connected to the feed cylinder group and is also connected to the first end of each of the magnetic adsorption cylinders in the first group. The second transfer and collection end box is connected to the second end of each of the magnetic adsorption cylinders in the first group and the first end of each of the magnetic adsorption cylinders in the second group. The third transfer and collection end box is connected to the second end of each of the magnetic adsorption cylinders in the second group and the discharge cylinder group.

5. The slurry magnetic filtration device according to claim 1, characterized in that, The impurity cleaning device includes: a first discharge pipe, a first discharge valve, a second discharge pipe, a second discharge valve, a sludge discharge pipe, a sludge discharge valve, a recovery pipe, and a recovery valve. The first end of the first discharge pipe is connected to the transfer collector. The first discharge valve is mounted on the first discharge pipe. The second end of the first discharge pipe is connected to the first end of the second discharge pipe. The second discharge valve is mounted on the second discharge pipe. The second end of the second discharge pipe is connected to the inlet collector. The second end of the first discharge pipe is also connected to the first end of the sludge discharge pipe. The sludge discharge valve is mounted on the sludge discharge pipe. The first end of the recovery pipe is connected to the first end of the sludge discharge pipe. The recovery valve is mounted on the recovery pipe.

6. The slurry magnetic filtration device according to claim 5, characterized in that, The impurity cleaning device further includes: a first backflush pipe, a first backflush valve, a second backflush pipe, and a second backflush valve. The first backflush pipe is connected to the feed collection device, and the first backflush valve is disposed on the first backflush pipe. The second backflush pipe is connected to the discharge collection device, and the second backflush valve is disposed on the second backflush pipe.

7. The slurry magnetic filtration device according to claim 1, characterized in that, The discharge cylinder assembly includes multiple magnetic adsorption cylinders connected in parallel.

8. The slurry magnetic filtration device according to claim 7, characterized in that, The discharge collection component includes a discharge valve, a discharge bend, a discharge collection cone, and a discharge sealing plate. The discharge bend is connected to the discharge valve and the discharge collection cone, respectively. The discharge sealing plate covers the discharge collection cone. The ends of each magnetic adsorption cylinder in the discharge cylinder assembly are connected to the discharge sealing plate, so that the ends of each magnetic adsorption cylinder in the discharge cylinder assembly are connected to the discharge collection cone.

9. The slurry magnetic filtration device according to claim 1, characterized in that, The slurry magnetic filtration equipment further includes: a support frame, a lifting drive component, and a collection support component. The lifting drive component is mounted on the support frame, and the driving end of the lifting drive component is connected to the collection support component. The fixed ends of each roller away from its free end are respectively connected to the collection support component. The permanent magnet driving mechanism is mounted on the collection support component. The scraper ring is mounted on the bracket.

10. The slurry magnetic filtration device according to claim 9, characterized in that, The lifting drive component is a cylinder, a lifting motor, or a hydraulic lifter.

11. The slurry magnetic filtration device according to claim 9, characterized in that, The slurry magnetic filtration device further includes a lifting stroke limiting component, which includes a stroke rod, a stop end, and a support sleeve. One end of the stroke rod is connected to the collecting support component. The stroke rod movably passes through the bracket. The support sleeve is slidably sleeved outside the stroke rod and is located between the bracket and the collecting support component. The stop end is located on the end of the stroke rod away from the collecting support component.

12. The slurry magnetic filtration device according to claim 9, characterized in that, The magnetic filtration equipment for slurry also includes a locking device, which includes a locking tongue, a locking seat, a locking rod, and a locking drive. The locking seat and the locking drive are respectively disposed on the bracket, the locking tongue is disposed on the collecting support, and the locking rod is connected to the locking drive. The locking rod is used to lock the locking tongue on the locking seat.

13. The slurry magnetic filtration device according to claim 1, characterized in that, The roller body has a magnetic attraction adjustment area in the region near the guide end wing; The permanent magnet driving mechanism includes: a bottom airbag, a first air pipe, a top airbag, and a second air pipe. The bottom airbag and the top airbag are respectively housed at both ends of the roller body. The bottom airbag is clamped between the guide wing and the permanent magnet, so that the bottom airbag is housed in the magnetic attraction adjustment area. The first air pipe is housed in the roller body and communicates with the bottom airbag. The top airbag is housed in the roller body and is located on the side of the permanent magnet away from the bottom airbag. The second air pipe communicates with the top airbag.

14. The slurry magnetic filtration device according to claim 1, characterized in that, The permanent magnet comprises a plurality of magnetic rings that are stacked sequentially inside the roller body; Alternatively, the permanent magnet may be a magnetic rod embedded within the roller body.

15. The slurry magnetic filtration device according to claim 1, characterized in that, The roller body is made of stainless steel or the roller body is made of non-magnetic material; The guide end wing is made of stainless steel or the roller body is made of non-magnetic material.

16. The slurry magnetic filtration device according to claim 1, characterized in that, The guide end wing includes a seal and several wing plates. The seal is connected to the free end of the roller body to isolate the internal space of the roller body from the internal space of the cylinder body through the seal. Several wing plates are spaced apart on the seal. When the free end of the roller swings, the wing plate is used to hold against the inner wall of the cylinder and maintain a gap between the free end of the roller and the inner wall of the cylinder.

17. The slurry magnetic filtration device according to claim 1, characterized in that, The scraper ring includes an inner sealing ring, an inner channel sealing cover, an outer sealing ring, and an outer sealing cover. The inner sealing ring is movably sleeved on the outside of the roller body, the inner channel sealing cover is sleeved on the outside of the inner sealing ring, the outer sealing ring is sleeved on the outside of the inner channel sealing cover, and the outer sealing cover is sleeved on the outside of the outer sealing ring.

18. The slurry magnetic filtration device according to claim 1, characterized in that, A smooth area is provided between the permanent magnet and the inner wall of the roller, and the smooth area is coated with lubricating oil.

19. A method for cleaning a magnetic filtration device for slurry, characterized in that, A cleaning operation for the slurry magnetic filtration equipment according to any one of claims 1 to 18 includes the following steps: Stop feeding fluid slurry into the feed manifold and stop the fluid slurry outflow from the discharge manifold; The fluid slurry in the magnetic filtration device is collected in the intermediate collection unit, and the slurry is recovered by the impurity cleaning device. The magnetic roller is controlled to slide relative to the scraper ring sleeved on it. The roller body is provided with a magnetic attraction adjustment area in the region near the guide end wing, so that magnetic impurities attached to the roller body are scraped by the scraper ring onto the magnetic attraction adjustment area. The permanent magnet driving mechanism is controlled to drive the permanent magnet to move away from the guide end wing, thereby causing the permanent magnet to move away from the magnetic attraction adjustment area at the same time, so that the magnetic attraction adjustment area loses the magnetic attraction ability from the permanent magnet and forms a non-magnetic area; Cleaning fluid is introduced into the feed collector and / or the discharge collector to clean magnetic impurities on the non-magnetic area, and then flows out through the transfer collector and is collected by the impurity cleaning device.

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