Filter material heavy metal cleaning device based on high-pressure flushing

Abstract

The invention relates to the technical field of high-pressure cleaning, in particular to a filter material heavy metal cleaning device based on high-pressure washing. The device comprises a shell, a limiting cylinder and a spray head, the limiting cylinder and the spray head are arranged in the shell, the limiting cylinder is rotationally arranged in the shell, and an inlet is formed in the outer ring of the limiting cylinder; the spray head is used for spraying high-pressure water jet to the inlet; an outlet is formed in the side, opposite to the inlet, of the limiting cylinder, a guide part is arranged in the outlet in a sliding mode, the guide part is provided with a first position and a second position, and the guide part is located in the outlet at the first position and used for blocking the outlet. According to the invention, the filter material is limited in the limiting cylinder, and the guide piece is arranged in the limiting cylinder, so that on one hand, the filter material is guided in the cleaning process of the filter material, so that the filter material is in contact with the high-pressure water jet for multiple times, and the contact time is prolonged; and the guide piece controls the cleaned filter material to be discharged when a new filter material enters the limiting cylinder.

Description

Technical Field

[0001] This invention relates to the field of high-pressure cleaning technology, and more specifically, to a heavy metal cleaning device for filter media based on high-pressure flushing. Background Technology

[0002] In industrial sectors such as water treatment, metallurgy, electroplating, and mining, filter media (such as quartz sand, activated carbon, anthracite, and ceramic filter media) are widely used to adsorb and filter heavy metal ions (such as lead, cadmium, chromium, mercury, and arsenic) from wastewater. After a period of use, these filter media will adsorb and accumulate a large amount of heavy metal pollutants on their surface and internal pores, leading to filter media saturation, decreased filtration efficiency, and deterioration of effluent water quality. Therefore, regular cleaning is necessary.

[0003] In existing technologies, saturated filter media removed from filtration equipment is often subjected to high-pressure rinsing in an open cleaning tank. However, due to the light weight and small size of individual filter media, a significant "high kinetic energy escape" phenomenon occurs when subjected to the direct impact of high-pressure water jets. Specifically, the filter media is ejected or dispersed from the effective cleaning area at the moment of impact, resulting in only a brief contact between it and the high-pressure water jet. This brief contact time limits the shearing force of the water flow to remove deeply attached contaminants, leading to poor cleaning results. If a closed cleaning chamber is used to avoid this problem, it would severely hinder the convenient addition and removal of filter media, making continuous operation difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a filter media heavy metal cleaning device based on high-pressure rinsing, which guides and controls the filter media through a guide member, thereby solving the problems mentioned in the background art, namely, the problem that the filter media has brief contact with the high-pressure water jet during high-pressure rinsing and the difficulty in achieving continuous operation.

[0005] To achieve the above objectives, the filter media heavy metal cleaning device based on high-pressure flushing includes a housing, a limiting cylinder and a nozzle disposed within the housing, the limiting cylinder being rotatably disposed within the housing, and an inlet being provided on the outer ring of the limiting cylinder; the nozzle is used to spray a high-pressure water jet into the inlet. The limiting cylinder has an outlet on the side opposite to the inlet. A guide is slidably disposed inside the outlet. The guide has a first position and a second position. In the first position, the guide is inside the outlet and is used to block the outlet. In the second position, the guide is disengaged from the outlet, allowing the filter material inside the limiting cylinder to be discharged through the outlet. It also includes a guide component located inside the limiting cylinder. The guide component forms a collection chamber with an inlet inside the limiting cylinder. The collection chamber collects filter material through the inlet during the rotation of the limiting cylinder and discharges the filter material when the inlet faces the nozzle. During the discharge process, the filter material comes into contact with the high-pressure water jet and is rushed towards the guide component. After being guided by the arc surface of the guide component, it comes into contact with the high-pressure water jet again.

[0006] Based on this, the guide is an arc plate structure, with a first closed end at the top and a second closed end at the bottom; The top of the first closed end is a planar structure, which is used to slide and fit against the top wall of the outlet; The bottom of the second closed end bends towards the inlet, and the upper surface of the bent end is an arc surface, while the lower surface is a plane that slides and fits against the bottom wall of the outlet.

[0007] Based on this, one end of the guide component is fixedly connected to the inner ring of the limiting cylinder, and the other end is reserved with a feed port between it and the inner ring of the limiting cylinder, so that the top of the guide component forms a material collection cavity; The feed guide is provided with a discharge port for discharging filter material in the middle.

[0008] Based on this, a magnet block that is magnetically connected to the material guide is provided at the end of the first closed end.

[0009] Based on this, an electromagnet is provided inside the outer shell below the limiting cylinder. The electromagnet magnetically engages with the guide to limit the guide to a first position, allowing the filter material to be washed multiple times in the limiting cylinder.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this high-pressure flushing-based heavy metal cleaning device for filter media, the filter media is confined within a limiting cylinder. The guide component inside the limiting cylinder guides the filter media during the cleaning process, allowing it to come into multiple contacts with the high-pressure water jet, thus increasing the contact time. Furthermore, after the filter media cleaning is completed, the guide component controls the discharge of the cleaned filter media when new filter media enters the limiting cylinder. This solves the problems of brief contact between the filter media and the high-pressure water jet, as well as the difficulty in achieving continuous operation.

[0011] 2. In this high-pressure flushing-based heavy metal cleaning device for filter media, after the guide is controlled by an electromagnet, the displacement of the guide can be controlled without adding new filter media, so that the cleaned filter media cannot be discharged through the outlet. Thus, multiple cleanings are performed during the continuous rotation of the limiting cylinder to improve the cleaning quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the nozzle structure of the present invention; Figure 3 This is a cross-sectional structural diagram of the limiting cylinder of the present invention; Figure 4 This is a schematic diagram of the structure of the guide element of the present invention; Figure 5 This is a schematic diagram of the structure of the magnet block of the present invention; Figure 6 This is a schematic diagram of the rotation state of the limiting cylinder of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the rotation state of the limiting cylinder of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of one working state of the guide of the present invention; Figure 9 This is a schematic diagram of the filter plate of the present invention; Figure 10 This is a schematic diagram of another working state of the guide of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of another working state of the guide of the present invention. Figure 2 .

[0013] The meanings of the labels in the diagram are as follows: 100. Outer shell; 101. Cover plate; 102. Motor; 103. Discharge port; 104. Liquid discharge port; 105. Filter plate; 110. Water pipe; 111. Nozzle; 120. Limiting cylinder; 121. Inlet; 122. Outlet; 123. Mesh structure; 130. Guide; 131. Limiting rod; 132. Fixing plate; 133. Sliding rod; 134. Connecting spring; 135. First closed end; 136. Second closed end; 137. Guide part; 140. Material guide; 141. Discharge port; 142. Feed port; 150. Magnet block; 160. Electromagnet. Detailed Implementation

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] Example 1 addresses the problem of filter media experiencing brief contact with the high-pressure water jet during high-pressure rinsing and the difficulty in achieving continuous operation. This invention provides a heavy metal cleaning device for filter media based on high-pressure rinsing. For example... Figure 1 and Figure 2 As shown, the cleaning device includes a housing 100 and a limiting cylinder 120 and a nozzle 111 disposed within the housing 100. The limiting cylinder 120 is installed inside the housing 100 through an opening at the top of the housing 100. After installation, a cover plate 101 is fixed to the opening at the top of the housing 100 with bolts for sealing. This detachable design facilitates the disassembly, assembly, and maintenance of the limiting cylinder 120. When filter media needs to be fed into the limiting cylinder 120, it is simply poured into the feeding port at the top of the cover plate 101. In this invention, a screw conveyor can be used to feed the filter media to the feeding port.

[0018] The nozzles 111 are located on one side of the outer ring of the limiting cylinder 120 and are arranged in an array along the axial direction of the limiting cylinder 120. The water outlet of the nozzles 111 adopts a "V" shape structure so that the sprayed liquid is distributed in a fan shape when viewed from above. With this design, the liquid sprayed from multiple nozzles 111 will form a complete and continuous water flow surface to impact all the fallen filter media. The water inlet of the nozzles 111 is connected to an external water source through a water pipe 110. At the same time, a water pump needs to be connected to the nozzles 111 to increase the water pressure, so that the liquid is sprayed into the limiting cylinder 120 through the inlet 121 under high pressure.

[0019] like Figure 2 As shown, the two ends of the limiting cylinder 120 are rotatably connected to the outer casing 100 via rotating shafts, and one of the rotating shafts is connected to... Figure 1The motor 102 is coaxially fixedly connected to serve as the power source for driving the rotation of the limiting cylinder 120. The rotation of the limiting cylinder 120 allows the inlet 121 to adjust its position. Figure 2 This illustrates the state of liquid being injected into the limiting cylinder 120 through inlet 121 under high pressure. Figure 2 In the middle section, inlet 121 is rotated to face nozzle 111, at which point inlet 121 and nozzle 111 are at the same height, allowing liquid to be sprayed into limiting cylinder 120 through inlet 121. Furthermore, inlet 121 is arranged axially along limiting cylinder 120 to correspond with the multiple nozzles 111. When inlet 121 is rotated to the top, it is directly below the feeding port, allowing filter material to be conveyed into limiting cylinder 120 through inlet 121.

[0020] However, even with only inlet 121, the filter media still faces the problem of being difficult to discharge from the limiting cylinder 120. Therefore, as follows... Figure 3 As shown, an outlet 122 is provided on the side of the limiting cylinder 120 opposite to the inlet 121 to provide a discharge channel for the filter media, and a guide 130 is slidably disposed within the outlet 122 to control the discharge of the filter media. Specifically, the guide 130 has a first position and a second position. In the first position, the guide 130 is inside the outlet 122 to block the outlet 122; in the second position, the guide 130 is disengaged from the outlet 122, allowing the filter media in the limiting cylinder 120 to be discharged through the gap between the guide 130 and the outlet 122.

[0021] In specific implementation, refer to Figure 4 The outer ring of the limiting cylinder 120 corresponding to the outlet 122 is set to a protruding state, serving as the base plate for the sliding structure installation. The sliding structure includes a fixing plate 132 fixed to the side wall of the base plate and a sliding rod 133 fixedly connected to the outer wall of the guide member 130. The sliding rod 133 slides through the fixing plate 132, thereby realizing the sliding of the guide member 130 within the outlet 122. In addition, multiple limiting rods 131 are provided between the two base plates to prevent the guide member 130 from falling off from the outside, thereby improving sliding stability.

[0022] then, Figure 3 and Figure 5 The specific structure of the guide 130 is also shown. First, as... Figure 5 As shown, the guide 130 has an arc plate structure, and its length direction is parallel to the axial direction of the limiting cylinder 120. Next, refer to... Figure 3 The guide 130 has a first closed end 135 at its top and a second closed end 136 at its bottom. The top of the first closed end 135 is a flat structure for sliding contact with the top wall of the outlet 122; the bottom of the second closed end 136 is bent toward the inlet 121, and the upper surface of the bent end is an arc surface and the lower surface is a flat surface that slides in contact with the bottom wall of the outlet 122.

[0023] Furthermore, the curved surface of the bent end of the second closed end 136 guides the movement of the filter media. Therefore, the positional relationship between the second closed end 136 and the inlet 121 is particularly important. Specifically... Figure 3 The state shown is the standard. Figure 3 The dotted line in the figure represents the height of the inlet 121. In this embodiment, the height of the bent end of the second closed end 136 is set lower than the height of the inlet 121. In this way, the high-pressure water jet can push the filter media toward the arc surface of the second closed end 136, and guide the filter media to make contact with the high-pressure water jet again through the arc surface. Furthermore, by providing a guide part 137 at the end of the second closed end 136, the guide part 137 is inclined downward to increase the probability of the filter media entering the guide member 130.

[0024] Furthermore, to facilitate the drainage of water within the limiting cylinder 120, a portion of the limiting cylinder 120 can be configured as a water-permeable mesh structure 123. Figure 3 In the embodiment shown, the mesh structure 123 is disposed at the bottom of the limiting cylinder 120.

[0025] Regarding the issue of brief contact between the filter media and the high-pressure water jet, this is specifically addressed by installing a guide element 140 within the limiting cylinder 120. For example... Figure 2 As shown, the guide member 140 forms a collection chamber with an inlet 142 inside the limiting cylinder 120. During the rotation of the limiting cylinder 120, the collection chamber collects filter material through the inlet 142 and discharges the filter material when the inlet 121 faces the nozzle 111. During the discharge process, the filter material comes into contact with the high-pressure water jet and is pushed towards the guide member 130. After being guided by the arc surface of the guide member 130, it comes into contact with the high-pressure water jet again, thereby increasing the contact time.

[0026] Regarding the formation of the aggregate cavity, Figure 2 The state of the guide component 140 is taken as the reference. The guide component 140 has a plate-like structure. Its right end (i.e., the end near the inlet 121) is fixedly connected to the inner ring of the limiting cylinder 120, and its left end (i.e., the end near the outlet 122) is not in contact with the inner ring of the limiting cylinder 120, forming a feed inlet 142. At this time, a collection chamber is formed at the top of the guide component 140, and the filter material is collected through the feed inlet 142. In terms of discharge, a through discharge port 141 is set in the middle of the guide component 140. The diameter of the discharge port 141 is slightly larger than (for example, larger than 2 mm) the particle size of the filter material to achieve the discharge of the filter material. Furthermore, by bending the part of the guide component 140 near the discharge port 141 downward, the two sides of the guide component 140 are designed to be inclined, forming a "V"-shaped state, so that the filter material at the top of the guide component 140 flows to the discharge port 141 under the action of inclination.

[0027] Furthermore, a magnet block 150 is provided at the top of the guide 130 (i.e., the end of the first closed end 135) and is magnetically connected to the guide 140. The magnetic force between the magnet block 150 and the guide 140 is less than the gravity exerted on the guide 130 by the filter media at a preset capacity.

[0028] The working principle of this embodiment will be explained in detail below: First, such as Figure 6 As shown, in Figure 6 In the left half, the guide 130 is in the second position, and the magnetic block 150 and the guide 140 magnetically attract each other, restricting the guide 130 to the second position. At this time, the height of the second closed end 136 is higher than the height of the outlet 122, creating a gap between the second closed end 136 and the outlet 122, through which the cleaned filter material is discharged. Then, combined with... Figure 6 The right half of the filter media is fed into the limiting cylinder 120 through inlet 121. Since the guide 130 is located below inlet 121, the filter media will fall on top of the guide 130. When the weight of the filter media is greater than the magnetic force between the magnet block 150 and the guide 140, the guide 130 moves down to the first position, blocking outlet 122 and opening inlet 142.

[0029] Next, as Figure 7 As shown, the driving limit cylinder 120 rotates 90 degrees counterclockwise. At this time, the filter material on the top of the guide 130 will slide into the collection chamber through the feed inlet 142. Then, the driving limit cylinder 120 rotates 90 degrees counterclockwise. At this time, the guide 130 is above the limit cylinder 120. Therefore, under the action of gravity, the guide 130 slides down to the second position. At this time, the magnet block 150 and the guide 140 attract each other to close the feed inlet 142 and open the outlet 122 at the same time.

[0030] Finally, as Figure 8As shown, when the guide component 140 rotates to the top, the water pressure is controlled to be above 0.5 MPa, causing the high-pressure water jet from the nozzle 111 to enter the limiting cylinder 120 at a speed of approximately 31.62 m / s (refer to the white arrow). The filter media then falls through the discharge port 141 (refer to the black solid arrow) until all the filter media is discharged through the discharge port 141. At this point, the nozzle 111 can be closed. The filter media undergoes its first cleaning by being impacted by the high-pressure water jet during its fall. Here, the filter media can be selected from ceramic granules, quartz sand, manganese sand, etc. Taking 1mm diameter quartz sand as an example, the weight of a single quartz sand particle is approximately 1.25 milligrams. Therefore, when facing the high-pressure water jet, it will be impacted at the guide component 130. During the cleaning process, taking quartz sand as an example, the adhesion of heavy metals on the outer surface of quartz sand is usually between 100 and 400 nN (mainly through physical adsorption), while the impact and drag force generated by the water jet is about 15,000 nN, which is sufficient to wash off the deposits. Next, the impacted filter media moves towards guide 130 (refer to the black dotted arrow) and moves upward under the action of the arc surface of guide 130, then falls again, making secondary contact with the high-pressure water jet during this second fall, resulting in a secondary cleaning.

[0031] After cleaning, the filter media will be in a state of flux under the rotation of the limiting cylinder 120. Figure 6 The state of the left half is used to implement a loop. Also, refer to... Figure 9 After the filter media is discharged through outlet 122, it will fall onto the surface of filter plate 105 installed inside the housing 100. Filter plate 105 separates the filter media from the water, so that the filter media is discharged through discharge port 103 and the water is discharged through discharge port 104. The discharged wastewater enters the wastewater treatment system for treatment.

[0032] In other words, by confining the filter media within the limiting cylinder 120, the guide 130 provided within the limiting cylinder 120 guides the filter media during the cleaning process, allowing the filter media to come into contact with the high-pressure water jet multiple times, thus increasing the contact time. On the other hand, after the filter media is cleaned, the guide 130 controls the discharge of the cleaned filter media when new filter media enters the limiting cylinder 120, thereby solving the problems of brief contact between the filter media and the high-pressure water jet and the difficulty in achieving continuous operation.

[0033] Example 2 is an optimization of Example 1, mainly to achieve the purpose of multiple cleanings of the filter media. For example... Figures 9-11 As shown, an electromagnet 160 is disposed inside the outer casing 100, located below the limiting cylinder 120, and the electromagnet 160 is magnetically attracted to the guide member 130. In this embodiment, the electromagnet 160 is externally sealed to prevent leakage.

[0034] The working principle of this embodiment will be explained in detail below: When the limit cylinder 120 rotates to Figure 10 When the filter media is in the middle left half position, the cleaned filter media falls to the bottom of the limiting cylinder 120, and the outlet 122 is in the open position. When the limiting cylinder 120 rotates to... Figure 10 When the right half of the filter media is in its current state, electromagnet 160 is activated. Electromagnet 160 pulls guide 130 downward, sealing outlet 122. At this time, the cleaned filter media cannot be discharged through outlet 122. As the limiting cylinder 120 continues to rotate, as... Figure 11 As shown, the filter media will re-enter the collection chamber for a second cleaning. Once the cleaning is complete, turn off the power to electromagnet 160.

[0035] In addition, a connecting spring 134 is provided between the slide rod 133 and the fixed plate 132. The connecting spring 134 can provide a force for the guide member 130 to move towards the guide member 140. For example, when the electromagnet 160 mistakenly pulls down the guide member 130, the electromagnet 160 is turned off, and the connecting spring 134 pushes the guide member 130 to move towards the guide member 140 under its own elastic force.

[0036] It should be understood that the connecting spring 134 is only provided to drive the guide 130 to reset in the event of an erroneous start-up of the electromagnet 160. When there is no erroneous start-up, the connecting spring 134 may not be required.

[0037] In summary, by using electromagnet 160 to control guide 130, the displacement of guide 130 can be controlled without adding new filter material, so that the cleaned filter material cannot be discharged through outlet 122, thereby performing multiple cleanings during the continuous rotation of limit cylinder 120 to improve cleaning quality.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter media heavy metal cleaning device based on high-pressure flushing, characterized in that: It includes a housing (100) and a limiting cylinder (120) and a nozzle (111) disposed within the housing (100). The limiting cylinder (120) is rotatably disposed within the housing (100), and an inlet (121) is provided on the outer ring of the limiting cylinder (120). The nozzle (111) is used to spray a high-pressure water jet into the inlet (121). The limiting cylinder (120) has an outlet (122) on one side opposite to the inlet (121). A guide (130) is slidably disposed inside the outlet (122). The guide (130) has a first position and a second position. In the first position, the guide (130) is inside the outlet (122) and is used to block the outlet (122). In the second position, the guide (130) is disengaged from the outlet (122), so that the filter material in the limiting cylinder (120) is discharged through the outlet (122). It also includes a guide member (140) located inside the limiting cylinder (120). The guide member (140) forms a collection chamber with a feed inlet (142) inside the limiting cylinder (120). The collection chamber collects filter material through the feed inlet (142) during the rotation of the limiting cylinder (120) and discharges the filter material when the inlet (121) faces the nozzle (111). During the discharge process, the filter material comes into contact with the high-pressure water jet and is rushed towards the guide member (130). After being guided by the arc surface of the guide member (130), it comes into contact with the high-pressure water jet again.

2. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 1, characterized in that: A fixing plate (132) is provided on one side of the limiting cylinder (120), and a sliding rod (133) is provided on the outer wall of the guide (130) and slidably connected to the fixing plate (132). Through the sliding connection between the sliding rod (133) and the fixing plate (132), the guide (130) slides in the outlet (122).

3. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 1, characterized in that: The guide (130) is an arc plate structure, with a first closed end (135) at the top and a second closed end (136) at the bottom. The top of the first closed end (135) is a planar structure, which is used to slide and fit against the top wall of the outlet (122); The bottom of the second closed end (136) bends toward the inlet (121), and the upper surface of the bent end is an arc surface and the lower surface is a plane that slides and fits against the bottom wall of the outlet (122).

4. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 3, characterized in that: The height of the bent part of the second closed end (136) is lower than the height of the inlet (121), so that the high-pressure water jet will push the filter material towards the arc surface of the second closed end (136), and guide the filter material to contact the high-pressure water jet again through the arc surface.

5. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 1, characterized in that: The limiting cylinder (120) is partially configured as a water-permeable mesh structure (123).

6. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 1, characterized in that: One end of the guide (140) is fixedly connected to the inner ring of the limiting cylinder (120), and the other end is provided with a feed inlet (142) between it and the inner ring of the limiting cylinder (120) so that the top of the guide (140) forms a material collection cavity; The feed guide (140) is provided with a discharge port (141) for discharging filter material in the middle.

7. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 6, characterized in that: The guide (140) is bent downward near the discharge port (141) to guide the filter material to flow to the discharge port (141).

8. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 3, characterized in that: The end of the first closed end (135) is provided with a magnet block (150) that is magnetically connected to the guide (140).

9. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 8, characterized in that: The magnetic force between the magnet block (150) and the guide (140) is less than the gravity exerted by the filter media on the guide (130) under the preset capacity.

10. The filter media heavy metal cleaning device based on high-pressure flushing according to claim 1, characterized in that: An electromagnet (160) is provided inside the housing (100) below the limiting cylinder (120). The electromagnet (160) is magnetically attracted to the guide (130) to limit the guide (130) to a first position, so that the filter material is washed multiple times in the limiting cylinder (120).

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