Filtering barrel, filtering system, filtering method and flushing method

Abstract

The invention discloses a filtering barrel, a filtering system, a filtering method and a washing method, and solves the technical problem that a filtering barrel of a high-speed filter in the prior art is easy to deform. The filtering barrel comprises a barrel body, an upper end cover, a bottom cover and a supporting assembly, and a plurality of filtering holes are formed in the circumferential direction of the barrel body; the upper end cover is connected with the first end of the barrel and is used for being connected and communicated with the filtering device; the bottom cover is connected with the second end of the barrel and used for blocking the second end of the barrel. The supporting assembly is arranged in the cylinder body and comprises a plurality of supporting pieces and a plurality of supporting rods connected with two adjacent supporting rings, at least one supporting ring is connected with the inner wall of the cylinder body, and at least one supporting ring and / or supporting rod are / is connected with the bottom cover. Therefore, the supporting assembly is arranged in the cylinder body, the supporting assembly is located in the cylinder body, and the supporting assembly is connected with the cylinder body, so that the supporting strength of the cylinder body can be guaranteed, and the overall buckling resistance and deformation resistance of the cylinder body are improved.

Description

Technical Field

[0001] This application belongs to the field of filtration technology, specifically relating to a filter cartridge, a filtration system, a filtration method, and a rinsing method. Background Technology

[0002] High-speed filters are one of the main devices in modern industrial water treatment. They are very suitable for purifying turbid water containing iron oxide scale and oil in steel rolling and continuous casting processes in steel enterprises, as well as for side-filtration in circulating systems.

[0003] However, the existing high-speed filter canisters are only suitable for working conditions with small pipe diameters, low flow rates, and small amounts of filter media. Nowadays, high-speed filtration devices used in industrial circulating water systems require the installation of a filter at the water outlet to separate the circulating water from the filter media. The existing filter canisters cannot withstand high pressure, which can easily cause filter deformation. Summary of the Invention

[0004] To address the technical problem of easy deformation of the filter cartridge in existing high-speed filters, this application provides a filter cartridge, a filtration system, a filtration method, and a rinsing method.

[0005] In a first aspect of this application, a filter cartridge is provided, comprising: The cylindrical body has a first end and a second end that are disposed opposite to each other, and the cylindrical body is provided with a plurality of filter holes in its circumferential direction; both the first end and the second end of the cylindrical body are open. The upper end cover has an open middle section and is connected to the first end of the cylinder, and is used to connect and communicate with the filter device. The bottom cover is connected to the second end of the cylinder and is used to seal the second end of the cylinder; A support assembly is disposed inside the cylinder. The support assembly includes multiple support members and multiple support rods connected to two adjacent support rings. At least one support ring is connected to the inner wall of the cylinder, and at least one support ring and / or the support rod is connected to the bottom cover.

[0006] In some embodiments, the support member includes a first support ring, which is coaxially arranged with the cylinder, and a plurality of the first support rings are spaced apart along the axial direction of the cylinder; And / or, the outer diameter of the first support ring is smaller than the inner diameter of the cylinder.

[0007] In some embodiments, the support member further includes a second support ring connected to the first support ring, the second support ring being coaxially arranged with the cylinder body, and the outer diameter of the second support ring being smaller than the inner diameter of the first support ring; And / or, a plurality of the second support rings are spaced apart along the axial direction of the cylinder.

[0008] In some implementations, the number of the first support rings and the second support rings are the same and their positions correspond one-to-one.

[0009] In some embodiments, the support rod includes a first support rod, a second support rod, and a third support rod, wherein the first support rod is connected to both the first support ring and the second support ring; the second support rod is connected to both adjacent first support rings; and the third support rod is connected to both adjacent second support rings.

[0010] In a second aspect of this application, a filtration system is provided, comprising: The filter body is equipped with an inlet and an outlet. The aforementioned filter barrel is located within the filter body and is connected and communicates with the water outlet; Filter media is disposed within the filter body, and the size of the filter media is larger than the size of the filter pores; The stirring device includes a motor disposed on the outer wall of the filter body and a fan blade disposed on the filter body. The output end of the motor is connected to the fan blade, and the fan blade is close to the water inlet.

[0011] In some embodiments, the filtration system further includes: The main water inlet pipe is equipped with a first valve; The first water inlet pipe is connected to the main water inlet pipe, and is equipped with a second valve, which is connected to the water inlet of the filter body; The first water outlet pipe is connected to the water outlet of the filter body and is equipped with a third valve.

[0012] In some embodiments, the filtration system further includes: The second water inlet pipe is connected to both the main water inlet pipe and the outlet of the filter body, and is equipped with a fourth valve; The second water outlet pipe is connected to the water outlet of the filter body and is used to connect to the production drainage well, and is equipped with a fifth valve; The third water outlet pipe is connected to the water inlet of the filter body and is used to connect to the production drainage well, and is equipped with a sixth valve.

[0013] In a third aspect of this application, a filtering method is provided, comprising the following steps: Open the first valve, the second valve, and the third valve. The filtered water enters through the inlet of the filter, passes through the filter media and the filter holes of the filter barrel in sequence, and then flows out through the outlet of the filter body through the first outlet pipe.

[0014] In a fourth aspect of this application, a rinsing method is provided, comprising the following steps: Open the first valve and the second valve, and close the third valve, the fourth valve, the fifth valve and the sixth valve; By starting the motor to drive the fan blades to rotate, and alternating between forward and reverse rotation of the motor, the impurities on the filter material are removed. Turn off the motor and the second valve, open the fourth and sixth valves to backwash, rinse the filter media and discharge the wastewater to the production drainage well; Close the fourth and sixth valves, open the second and fifth valves to perform forward flushing, flush the filter media, and discharge the wastewater to the production drainage well; After the backwash is complete, close the fifth valve and open the third valve to begin normal filtration.

[0015] A filter barrel, filter system, filter method, and rinsing method are provided according to one or more embodiments of this application. A filter barrel includes a cylindrical body, an upper cover, a bottom cover, and a support assembly. The cylindrical body has a first end and a second end disposed opposite to each other, and a plurality of filter holes are provided circumferentially on the cylindrical body. Both the first and second ends of the cylindrical body are open. The upper cover has an open center and is connected to the first end of the cylindrical body, and is used to connect and communicate with a filter device. The bottom cover is connected to the second end of the cylindrical body and is used to seal the second end of the cylindrical body. The support assembly is disposed inside the cylindrical body and includes a plurality of support members and a plurality of support rods connected to two adjacent support rings. At least one support ring is connected to the inner wall of the cylindrical body, and at least one support ring and / or support rod is connected to the bottom cover. Therefore, this application provides a support assembly inside the cylindrical body, with the support assembly located inside the cylindrical body and connected to both the cylindrical body and the bottom cover, thus providing support. The connection between the support assembly and the cylindrical body ensures the support strength of the cylindrical body, thereby improving the overall buckling and deformation resistance of the cylindrical body. Attached Figure Description

[0016] Figure 1 A schematic diagram of the filter barrel structure is shown in one or more embodiments of this application.

[0017] Figure 2 It shows Figure 1 A schematic diagram of the filter barrel from one perspective.

[0018] Figure 3 It shows Figure 1 A schematic diagram of the filter barrel from another perspective.

[0019] Figure 4 It shows Figure 1 A partial structural diagram of the supporting components.

[0020] Figure 5 A schematic diagram of a filtering system in one or more embodiments of this application is shown.

[0021] Explanation of reference numerals in the attached drawings: 10-Filtration system, 100-Filter barrel, 110-Cylinder body, 111-Filter hole, 120-Upper end cover, 130-Bottom cover, 140-Support assembly, 141-First support ring, 142-Second support ring, 143-First support rod, 144-Second support rod, 145-Third support rod, 200-Filter body, 210-Filter media, 220-Agitator, 221-Motor, 222-Fan blade, 300-Main water inlet pipe, 310-First valve, 400-First water inlet pipe, 410-Second valve, 500-First water outlet pipe, 510-Third valve, 600-Second water inlet pipe, 610-Fourth valve, 700-Second water outlet pipe, 710-Fifth valve, 800-Third water outlet pipe, 810-Sixth valve. Detailed Implementation

[0022] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 According to a first aspect of this application, a filter barrel 100 is provided, including a cylindrical body 110, an upper end cover 120, a bottom cover 130, and a support assembly 140. The cylindrical body 110 has a first end and a second end disposed opposite to each other, and a plurality of filter holes 111 are provided circumferentially on the cylindrical body 110. Both the first end and the second end of the cylindrical body 110 are open. The upper end cover 120 is open in the middle and is connected to the first end of the cylindrical body 110 and is used to connect and communicate with a filter device. The bottom cover 130 is connected to the second end of the cylindrical body 110 and is used to seal the second end of the cylindrical body 110. The support assembly 140 is disposed inside the cylindrical body 110 and includes a plurality of support members and a plurality of support rods connected to two adjacent support rings. At least one support ring is connected to the inner wall of the cylindrical body 110, and at least one support ring and / or support rod is connected to the bottom cover 130.

[0024] In some embodiments, the cylinder 110 is made of uniformly distributed stainless steel plates with mesh. The cylinder 110 is cylindrical, and its upper edge is welded to the upper end cap 120. The upper end cap 120 is annular with an open center, allowing the filtered liquid to flow out through the middle. Welding the upper edge of the cylinder 110 to the upper end cap 120 facilitates connection and communication between the filter bucket 100 and the filter device. The lower edge of the cylinder 110 is welded to the bottom cover 130. The bottom cover 130 is plate-shaped, and welding it to the lower edge of the cylinder 110 seals the bottom of the cylinder 110.

[0025] The support assembly 140 is disposed inside the cylindrical body 110, that is, the cylindrical body 110 is fitted onto the support assembly 140, and the inner wall of the cylindrical body 110 is connected to the support assembly 140. The contact points between the inner wall of the cylindrical body 110 and the support assembly 140 can be welded by spot welding, thereby ensuring the support strength of the cylindrical body 110 and improving the overall buckling and deformation resistance of the cylindrical body 110. In some embodiments, the bottom cover 130 is connected to the support assembly 140, and the contact points between the bottom cover 130 and the support assembly 140 can be welded by spot welding, thereby ensuring the support strength of the cylindrical body 110 and improving the overall buckling and deformation resistance of the cylindrical body 110.

[0026] In some embodiments, the bottom cover 130 is located at the bottom of the cylinder 110, providing support and sealing for the bottom of the filter barrel 100. The upper surface of the bottom cover 130 is fixedly connected to the cylinder 110 and the support assembly 140 by spot welding.

[0027] Therefore, this application provides a support component 140 inside the cylinder 110. The support component 140 is located inside the cylinder 110 and is connected to both the cylinder 110 and the bottom cover 130, thus playing a supporting role. By connecting the support component 140 to the cylinder 110, the support strength of the cylinder 110 can be guaranteed, thereby improving the overall buckling resistance and deformation resistance of the cylinder 110.

[0028] like Figure 1As shown, in some embodiments, the support includes a first support ring 141, which is coaxially arranged with the cylinder 110. Multiple first support rings 141 are spaced apart along the axial direction of the cylinder 110. Each first support ring 141 is arranged completely coaxially with the cylinder 110, ensuring that its geometric center coincides. In some embodiments, the first support rings 141 are uniformly or non-uniformly distributed along the entire axial length of the cylinder 110, forming a multi-layered circumferential skeleton. The first support rings 141 are spot-welded to the cylinder 110, thereby improving the circumferential strength of the cylinder 110. Spot welding significantly reduces the heat input during welding, lowering the risk of thermal deformation of the cylinder 110 and the first support rings 141. The multi-layered, spaced arrangement creates segmented reinforcement in the axial direction, significantly improving the overall buckling and deformation resistance of the cylinder 110.

[0029] like Figure 1 As shown, in some embodiments, the outer diameter of the first support ring 141 is smaller than the inner diameter of the cylinder 110. The outer diameter of the first support ring 141 is slightly smaller than the inner diameter of the cylinder 110, thereby ensuring that the first support ring 141 and the cylinder 110 form a certain radial gap, which facilitates welding the first support ring 141 and the cylinder 110.

[0030] like Figure 1 As shown, to further improve the pressure-bearing performance of the cylinder 110, in some embodiments, the support member further includes a second support ring 142 connected to the first support ring 141. The second support ring 142 is coaxially arranged with the cylinder 110, and the outer diameter of the second support ring 142 is smaller than the inner diameter of the first support ring 141. The first support ring 141 and the second support ring 142 form a double-layer circumferential support structure, thereby forming a three-dimensional reinforcing frame inside the cylinder 110. The three-dimensional reinforcing frame significantly improves the stiffness and stability of the overall structure under radial, axial, and torsional multi-degree-of-freedom loads, further reducing the vibration amplitude of the cylinder 110 and improving its pressure-bearing performance.

[0031] like Figure 1 As shown, in some embodiments, multiple second support rings 142 are spaced apart along the axial direction of the cylinder 110. The first support rings 141 can be axially misaligned or correspond one-to-one. In some embodiments, the first support rings 141 and second support rings 142 are axially misaligned, meaning adjacent first support rings 141 and second support rings 142 are not in the same plane, forming a spatial misalignment in the axial direction. This spatial misalignment effectively disperses and transmits localized concentrated forces, suppressing local buckling of the first support rings 141 under pressure or impact. This further reduces the vibration amplitude of the cylinder 110 and improves its pressure-bearing capacity.

[0032] like Figure 1As shown, in some embodiments, the number of first support rings 141 and second support rings 142 is the same and their positions correspond one-to-one. That is, adjacent first support rings 141 and second support rings 142 are in the same plane, which significantly improves the stiffness and stability of the overall structure under radial, axial and torsional multi-degree-of-freedom loads.

[0033] In some embodiments, the support rod includes a first support rod 143, a second support rod 144, and a third support rod 145. To ensure the stability of the connection between adjacent first support rings 141 and second support rings 142, the first support rod 143 is connected to both the first support ring 141 and the second support ring 142. The first support ring 141 and the second support ring 142 are rigidly connected by multiple first support rods 143 arranged evenly along the circumference. The two ends of each first support rod 143 are fixed to the corresponding nodes of the first support ring 141 and the second support ring 142 by butt welding or fillet welding, forming a "cage-shaped" space truss system composed of circumferential rings and radial rods.

[0034] In some embodiments, the cross-section of the support rod may be circular, rectangular, or "T" shaped, and this application does not impose any special restrictions.

[0035] Thus, the first support rod 143 upgrades the first support ring 141 and the second support ring 142 from a planar combination to a three-dimensional spatial truss, enabling axial force, radial force, and torque to be efficiently transmitted through the axial force of the rods, resulting in a significant increase in overall stiffness and buckling critical load. Simultaneously, the circumferentially uniform arrangement of the first support rods 143 forms a relatively discrete arrangement, which can significantly reduce the overall weight of the support assembly 140 and reduce welding heat input, thereby reducing thermal deformation and residual stress. This facilitates assembly and maintenance and further improves the reliability and fatigue life of the cylinder 110 under high-temperature and impact conditions.

[0036] In some embodiments, the second support rod 144 is connected to both adjacent first support rings 141; the two adjacent first support rings 141 are no longer independent of each other, but are connected by a plurality of second support rods 144. In some embodiments, the second support rods 144 are evenly distributed circumferentially, and the second support rods 144 are parallel to the axis of the cylinder 110; or the second support rods 144 are set at an angle to the axis of the cylinder 110, that is, the second support rods 144 are set obliquely, or the second support rods 144 may also be arranged obliquely to cross each other to form an "X" or "V" shape. The two ends of each second support rod 144 are respectively fixed to the corresponding nodes of the adjacent first support rings 141 by fillet welding, thereby forming a continuous truss unit between the adjacent first support rings 141. The whole constitutes a three-dimensional reinforcement network of multi-level annular skeleton and axial truss interwoven inside the cylinder 110, which further improves the reliability and fatigue life of the cylinder 110 under high temperature and impact conditions.

[0037] In some implementations, the third support rod 145 is connected to both adjacent second support rings 142. The two adjacent second support rings 142 are no longer independent but are connected by several third support rods 145. In some embodiments, the third support rods 145 are evenly distributed circumferentially, parallel to the axis of the cylinder 110; or the third support rods 145 are angled to the axis of the cylinder 110, i.e., the third support rods 145 are obliquely arranged; or the third support rods 145 may also be obliquely intersecting to form an "X" or "V" shape. The two ends of each third support rod 145 are respectively fixed to the corresponding nodes of the adjacent second support rings 142 by fillet welds, thereby forming a continuous truss unit between adjacent second support rings 142. Overall, this constitutes a three-dimensional reinforcing network of multi-level annular skeletons and axial trusses interwoven within the cylinder 110, further improving the reliability and fatigue life of the cylinder 110 under high temperature and impact conditions.

[0038] Therefore, the support assembly 140 consists of a first support ring 141, a second support ring 142, and connected first support rods 143, second support rings, and third support rods 145, forming a cylindrical support with two inner and outer layers and multiple upper and lower layers. All connections are firmly welded. This significantly improves the stiffness and stability of the overall structure under radial, axial, and torsional multi-degree-of-freedom loads.

[0039] The filter cartridge 100 of this application has a pressure resistance of 3-6 kg and a capacity of 300 m³. 3 With a filtration capacity of over / h, it has advantages such as large filtration volume, no deformation or cracking, and when the high-speed filtration device is backwashed, the PP filter media 210 can quickly detach from the surface of the device without sticking or caking. It can be widely used in circulating water side-filtration systems that use high-speed filtration devices.

[0040] In the second aspect of this application, as Figure 5 As shown, a filtration system 10 is provided, including a filter body 200, the aforementioned filter barrel 100, filter media 210, and a stirring device 220. The filter body 200 is provided with an inlet and an outlet. The aforementioned filter barrel 100 is disposed inside the filter body 200 and is connected and communicates with the outlet. The filter media 210 is disposed inside the filter body 200, and the size of the filter media 210 is larger than the size of the filter holes 111. The stirring device 220 includes a motor 221 disposed on the outer wall of the filter body 200 and a fan blade 222 disposed on the filter body 200. The output end of the motor 221 is connected to the fan blade 222, and the fan blade 222 is close to the inlet.

[0041] The mesh size of filter hole 111 is smaller than that of filter media 210 to prevent filter media 210 from overflowing. The cylinder 110 is the filter surface of the PP filter media 210 of this filter, where the filter media 210 and the cylinder 110 are separated at high speed and effectively. When the filter barrel 100 is installed on the filter body 200, the upper end cover 120 is fixed to the water outlet at the top of the high-speed filtration device. When the high-speed filtration device is working normally, the PP filter media 210 forms a filter cake that floats in the upper space of the filter. When industrial circulating water is filtered through the PP filter media 210 layer, all of the filter media 210 is squeezed onto the filter screen on the cylindrical body 110 of the filter barrel 100. The pressure of the circulating water pump forces the water to pass through the filter holes 111 of the cylindrical body 110 after being filtered through the filter media 210. The PP filter media 210 is intercepted on the outside of the cylindrical body 110 of the filter barrel 100. Because the filter barrel 100 has the advantages of pressure resistance, large filtration capacity, and no deformation or cracking, when the high-speed filtration device is backwashed, the PP filter media 210 can quickly detach from the surface of the device without sticking or caking. It can be widely used in circulating water side-filtration systems that use high-speed filtration devices.

[0042] like Figure 5 As shown, in some embodiments, the filtration system 10 further includes a main inlet pipe 300, a first inlet pipe 400, and a first outlet pipe 500; the main inlet pipe 300 is provided with a first valve 310; the first inlet pipe 400 is connected to the main inlet pipe 300, is provided with a second valve 410, and is connected to the inlet of the filter body 200; the first outlet pipe 500 is connected to the outlet of the filter body 200 and is provided with a third valve 510. When the first valve 310, the second valve 410, and the third valve 510 are opened, the filtered water enters through the filter inlet, passes through the filter media 210 and the filter holes 111 of the filter barrel 100 in sequence, and then flows out from the outlet of the filter body 200 through the first outlet pipe 500.

[0043] like Figure 5 As shown, in some embodiments, the filtration system 10 further includes a second inlet pipe 600, a second outlet pipe 700, and a third outlet pipe 800; the second inlet pipe 600 is connected to both the main inlet pipe 300 and the outlet of the filter body 200, and is provided with a fourth valve 610; the second outlet pipe 700 is connected to the outlet of the filter body 200 and is used to connect to the production drainage well, and is provided with a fifth valve 710; the third outlet pipe 800 is connected to the inlet of the filter body 200 and is used to connect to the production drainage well, and is provided with a sixth valve 810.

[0044] Open the first valve 310 and the second valve 410, and close the third valve 510, the fourth valve 610, the fifth valve 710, and the sixth valve 810. Start the motor 221 to drive the fan blade 222 to rotate, and alternately rotate the motor 221 forward and reverse until the impurities on the filter media 210 are removed. Close the motor 221 and the second valve 410, and open the fourth valve 610 and the sixth valve 810 to perform backwashing, flushing the filter media 210 and discharging the wastewater to the production drainage well. Close the fourth valve 610 and the sixth valve 810, and open the second valve 410 and the fifth valve 710 to perform forward flushing, flushing the filter media 210 and discharging the wastewater to the production drainage well. After forward flushing, close the fifth valve 710 and open the third valve 510 to resume normal filtration.

[0045] In a third aspect of this application, a filtration method includes the following steps: opening a first valve 310, a second valve 410, and a third valve 510, allowing filtered water to enter through the filter inlet, pass through the filter media 210 and the filter holes 111 of the filter barrel 100 in sequence, and then flow out through the outlet of the filter body 200 via the first outlet pipe 500. Meanwhile, industrial circulating water enters through two branches at the bottom of the filter, i.e., pipeline filters, passes through the PP filter media 210 layer at the top, and then passes through the filter barrel 100 before being filtered out. The filter barrel 100 has the characteristics of pressure resistance and large flow rate, meeting production needs.

[0046] In a fourth aspect of this application, a rinsing method includes the following steps: S100: Open the first valve 310 and the second valve 410, and close the third valve 510, the fourth valve 610, the fifth valve 710 and the sixth valve 810; Understandably, after the filter has been running for a period of time, i.e., the automatic backwashing time is usually set to 8 to 12 hours according to the circulating water quality, the filter media 210 needs to be backwashed and forward washed to remove the impurities it has adsorbed. The washing water is then discharged into the production drainage well to ensure the filtration effect of the PP filter media 210.

[0047] The first valve 310 can be a manual valve, normally open, while the other valves are electric valves. Before backflushing, close all valves and simultaneously open the first valve 310 and the second valve 410 to ensure that there is industrial circulating water inside the filter.

[0048] S200: By starting the motor 221, the fan blades 222 are driven to rotate, and the motor 221 is rotated forward and reverse alternately until the impurities on the filter media 210 are removed. It is understandable that starting the motor 221 causes the fan blades 222 to rotate at high speed, and the agitated water flow disperses the PP filter media 210 accumulated around the filter barrel 100. By alternating forward and reverse rotation of the motor 221, the impurities adsorbed on the PP filter media 210 are removed.

[0049] S300: Turn off motor 221 and second valve 410, open fourth valve 610 and sixth valve 810 to backwash, rinse filter media 210 and discharge wastewater to production drainage well; Understandably, after the set time, motor 221 stops working, motor 221 and second valve 410 are turned off, fourth valve 610 and sixth valve 810 are opened, and water enters from the outlet at the top of the high-speed filter and flows in reverse through the bottom pipe filter to intercept the filter media 210 before being discharged to the production drainage well, until the set time is reached.

[0050] S400: Close the fourth valve 610 and the sixth valve 810, open the second valve 410 and the fifth valve 710 to perform forward flushing, flush the filter media 210 and discharge the wastewater to the production drainage well; It can be understood that after the backwashing is completed, the forward flushing operation continues. The fourth valve 610 and the sixth valve 810 are closed, and the second valve 410 and the fifth valve 710 are opened. The flushing water continues to be discharged to the production drainage well. The forward flushing ends after the set time is reached.

[0051] S500: After the backwash is completed, close the fifth valve 710 and open the third valve 510 to start normal filtration.

[0052] Understandably, closing the fifth valve 710 and opening the third valve 510 restores normal production filtration until the next backwash and forward wash time is reached. The backwash interval, motor 221 stirring time, backwash time, and forward wash time can all be set individually and operated automatically through program control.

[0053] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this application, 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" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0055] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter cartridge, characterized in that, include: The cylindrical body has a first end and a second end that are disposed opposite to each other, and the cylindrical body is provided with a plurality of filter holes in its circumferential direction; both the first end and the second end of the cylindrical body are open. The upper end cover has an open middle section and is connected to the first end of the cylinder, and is used to connect and communicate with the filter device. The bottom cover is connected to the second end of the cylinder and is used to seal the second end of the cylinder; A support assembly is disposed inside the cylinder. The support assembly includes multiple support members and multiple support rods connected to two adjacent support rings. At least one support ring is connected to the inner wall of the cylinder, and at least one support ring and / or the support rod is connected to the bottom cover.

2. The filter barrel according to claim 1, characterized in that, The support member includes a first support ring, which is coaxially arranged with the cylinder body, and a plurality of the first support rings are spaced apart along the axial direction of the cylinder body. And / or, the outer diameter of the first support ring is smaller than the inner diameter of the cylinder.

3. The filter barrel according to claim 2, characterized in that, The support member further includes a second support ring connected to the first support ring. The second support ring is coaxially arranged with the cylinder body, and the outer diameter of the second support ring is smaller than the inner diameter of the first support ring. And / or, a plurality of the second support rings are spaced apart along the axial direction of the cylinder.

4. The filter barrel according to claim 3, characterized in that, The number of the first support ring and the second support ring are the same and their positions correspond one-to-one.

5. The filter cartridge according to any one of claims 1-4, characterized in that, The support rod includes a first support rod, a second support rod, and a third support rod. The first support rod is connected to both the first support ring and the second support ring. The second support rod is connected to both adjacent first support rings. The third support rod is connected to both adjacent second support rings.

6. A filtration system, characterized in that, include: The filter body is equipped with an inlet and an outlet. The filter bucket according to any one of claims 1-5 is disposed in the filter body and connected and communicates with the water outlet; Filter media is disposed within the filter body, and the size of the filter media is larger than the size of the filter pores; The stirring device includes a motor disposed on the outer wall of the filter body and a fan blade disposed on the filter body. The output end of the motor is connected to the fan blade, and the fan blade is close to the water inlet.

7. The filtration system according to claim 6, characterized in that, The filtration system also includes: The main water inlet pipe is equipped with a first valve; The first water inlet pipe is connected to the main water inlet pipe, and is equipped with a second valve, which is connected to the water inlet of the filter body; The first water outlet pipe is connected to the water outlet of the filter body and is equipped with a third valve.

8. The filtration system according to claim 7, characterized in that, The filtration system also includes: The second water inlet pipe is connected to both the main water inlet pipe and the outlet of the filter body, and is equipped with a fourth valve; The second water outlet pipe is connected to the water outlet of the filter body and is used to connect to the production drainage well, and is equipped with a fifth valve; The third water outlet pipe is connected to the water inlet of the filter body and is used to connect to the production drainage well, and is equipped with a sixth valve.

9. A filtration method for the filtration system according to claim 7, characterized in that, Includes the following steps: Open the first valve, the second valve, and the third valve. The filtered water enters through the inlet of the filter, passes through the filter media and the filter holes of the filter barrel in sequence, and then flows out through the outlet of the filter body through the first outlet pipe.

10. A flushing method for a filtration system according to claim 8, characterized in that, Includes the following steps: Open the first valve and the second valve, and close the third valve, the fourth valve, the fifth valve and the sixth valve; By starting the motor to drive the fan blades to rotate, and alternating between forward and reverse rotation of the motor, the impurities on the filter material are removed. Turn off the motor and the second valve, open the fourth and sixth valves to backwash, rinse the filter media and discharge the wastewater to the production drainage well; Close the fourth and sixth valves, open the second and fifth valves to perform forward flushing, flush the filter media, and discharge the wastewater to the production drainage well; After the backwash is complete, close the fifth valve and open the third valve to begin normal filtration.

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