A device for mitigating clogging of reverse osmosis security filter cartridges

Abstract

This invention relates to the field of pre-filtration technology, and more particularly to a device for mitigating clogging of reverse osmosis security filter cartridges. The device includes a filter assembly comprising a vertical filter cartridge with an internal water treatment space and an open top. A horizontal partition is provided within the water treatment space, dividing it from top to bottom into a filtration chamber and a collection chamber. A filter element is provided within the filtration chamber for pre-intercepting microorganisms, colloidal particles, and particulate impurities in the water. This invention is installed at the front end of a reverse osmosis security filter. By pre-intercepting microorganisms, colloidal particles, and particulate impurities in the water through the filter element, the total amount of impurities entering the reverse osmosis security filter is reduced, extending the service life of the reverse osmosis security filter cartridge, reducing the filtration pressure on subsequent reverse osmosis security filters, and shortening the cartridge replacement cycle of the reverse osmosis security filter.

Description

Technical Field

[0001] This invention relates to the field of pre-filtration technology, and more particularly to a device for mitigating clogging of reverse osmosis security filter cartridges. Background Technology

[0002] The main function of a reverse osmosis security filter is to intercept particulate impurities that leak through the pretreatment system, ensuring that the water entering the reverse osmosis high-pressure pump and reverse osmosis unit is of qualified quality. It also prevents the impurities from scratching the high-pressure pump impeller and reverse osmosis membrane elements after passing through the high-pressure pump, thereby protecting the reverse osmosis membrane and high-pressure pump, increasing the water production and quality of the reverse osmosis membrane, and improving the safety and reliability of the reverse osmosis equipment.

[0003] The filtration accuracy of reverse osmosis security filters is generally 5μm. The operating cycle of a reverse osmosis security filter is not fixed, but the typical replacement cycle is 2-3 months. The most significant influencing factor is the quality of the source water. Taking urban wastewater as an example, the high organic content in urban water leads to rapid microbial growth. The security filter cartridge traps a large amount of pollutants or microbial products, causing clogging and shortening the operating cycle of the reverse osmosis security filter. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that the high organic content in urban water sources leads to the rapid reproduction of microorganisms, causing the filter element of the security filter to trap a large amount of pollutants or microbial products, resulting in filter element blockage and shortening the operation cycle of the infiltration security filter, this invention is proposed.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for mitigating fouling of reverse osmosis security filter cartridges, comprising: a filter assembly, which includes a vertical filter cartridge with an internal water treatment space and an open top; a horizontal partition is provided in the water treatment space, which divides the water treatment space from top to bottom into a filtration chamber and a water collection chamber; a filter element is provided in the filtration chamber, which is used to pre-intercept microorganisms, colloids and particulate impurities in the water; and an installation assembly, which includes a support plate for supporting the filter element and a sleeve rod arranged perpendicularly to the support plate, wherein stacked filter elements are sleeved on the outside of the sleeve rod.

[0007] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, wherein: a slot is provided at the center of the top end of the sleeve rod, a plug rod is inserted into the slot, a through hole is provided on the bottom surface of the slot, a sliding column is provided in the through hole, one end of the sliding column extends into the slot and is fixedly connected to the plug rod, and the other end of the sliding column extends to the bottom of the support plate and is provided with a frustum block.

[0008] As a preferred embodiment of the device for mitigating clogging of reverse osmosis security filter cartridges according to the present invention, a first spring is provided at the bottom of the slot, one end of the first spring abuts against the insertion rod, and the other end of the first spring abuts against the bottom surface of the slot.

[0009] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, wherein: a three-section stepped groove is provided at the center of the side of the frustum block away from the insertion rod, a first T-shaped column is slidably provided in the upper stage of the stepped groove, a second T-shaped column is slidably provided in the middle stage of the stepped groove, and the bottom end of the second T-shaped column extends outside the stepped groove and is fixedly connected with a locking head.

[0010] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, a second spring is provided in the upper stage of the stepped groove, one end of the second spring abuts against the first T-shaped post, and the other end of the second spring abuts against the end face of the stepped groove.

[0011] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, wherein: a cylindrical groove is provided at one end of the second T-shaped column adjacent to the first T-shaped column, and the bottom end of the first T-shaped column is inserted into the cylindrical groove; a movable guide groove is provided on the outer wall of the first T-shaped column, and a sliding block is provided on the inner wall of the cylindrical groove and inserted into the movable guide groove; the movable guide groove includes a spiral section, and a first vertical section and a second vertical section arranged at both ends of the spiral section and parallel to the axis of the first T-shaped column, and the included angle between the lines connecting the first vertical section and the second vertical section to the axis of the first T-shaped column is 90°.

[0012] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, the locking head is in the shape of an inverted trapezoid, and the inclined curved surface of the locking head is provided with two symmetrically arranged release grooves; the bottom surface of the frustum block is provided with a retaining ring, and the top surface of the locking head is provided with a retaining groove that matches the retaining ring.

[0013] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, wherein: the surface of the horizontal partition is provided with a locking groove, and the locking head and the frustum block can be inserted into the locking groove; the side wall of the locking groove is provided with two symmetrically arranged limiting grooves; a limiting block is slidably disposed in the limiting groove; one end of the limiting block extends into the locking groove; a third spring is disposed between the other end of the limiting block and the end face of the limiting groove; the end of the limiting block extending into the locking groove is a right-angled triangle with the inclined surface facing upward.

[0014] As a preferred embodiment of the device for mitigating fouling of reverse osmosis security filter cartridges according to the present invention, wherein: the sidewall of the locking groove is provided with a guide post, and the frustum block and the locking head are provided with a mounting groove that matches the contour of the end face of the guide post.

[0015] As a preferred embodiment of the device for mitigating clogging of reverse osmosis security filter cartridges according to the present invention, wherein: the surface of the horizontal partition is evenly distributed with water flow holes connecting the filter chamber and the water collection chamber; the top of the vertical filter cartridge is provided with a quick-release sealing cap; the upper end of the side wall of the vertical filter cartridge is provided with an inlet and a backwash drain connecting the filter chamber; and the lower end of the side wall of the vertical filter cartridge is provided with an outlet and a drain connecting the water collection chamber.

[0016] The beneficial effects of this invention are as follows: This invention is installed at the front end of a reverse osmosis security filter. Through the filter element, microorganisms, colloidal and particulate impurities in the water are pre-intercepted, thereby reducing the total amount of impurities entering the reverse osmosis security filter, extending the service life of the reverse osmosis security filter element, reducing the filtration pressure of the subsequent reverse osmosis security filter, and reducing the replacement cycle of the reverse osmosis security filter element. The filter element is selected as a reusable filter element, and the filtration performance of the filter element can be restored by online water cleaning or chemical cleaning. Thus, the service life of the reverse osmosis security filter element is extended to the maximum extent without reducing the accuracy of the reverse osmosis security filter element and effectively protecting the reverse osmosis membrane. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the filter component in this invention.

[0020] Figure 3 This is a cross-sectional view of the vertical filter cartridge in this invention.

[0021] Figure 4 This is a schematic diagram of the connection structure between the horizontal partition and the filter element in this invention.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the installation components in this invention.

[0024] Figure 7 This is a partial structural diagram of the mounting components in this invention.

[0025] Figure 8 This is a schematic diagram of the locking head and the second T-shaped column in this invention.

[0026] Figure 9 This is a schematic diagram of the structure of the first T-shaped column in this invention. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0031] Example 1

[0032] Reference Figures 1-4The first embodiment of the present invention provides a device for mitigating clogging of a reverse osmosis security filter cartridge, comprising a filter assembly 100 and an installation assembly 200. The filter assembly 100 includes a vertical filter cartridge 101 with an internal water treatment space H and an open top, and a filter element 103 disposed within the water treatment space H. The filter element 103 is used to pre-intercept microorganisms, colloidal and particulate impurities in the water, and the installation assembly 200 is used to fix the filter element 103.

[0033] Furthermore, a horizontal partition 102 is provided in the water treatment space H, which divides the water treatment space H into a filtration chamber H-1 and a water collection chamber H-2 from top to bottom, and the filter element 103 is installed in the filtration chamber H-1.

[0034] Furthermore, to ensure normal water flow, the surface of the horizontal baffle 102 is evenly distributed with water flow holes 102c connecting the filter chamber H-1 and the water collection chamber H-2. The upper side wall of the vertical filter cylinder 101 is provided with an inlet 105 connecting the filter chamber H-1 and a backwash drain 106. The lower side wall of the vertical filter cylinder 101 is provided with an outlet 107 connecting the water collection chamber H-2 and a drain 108. The drain 108 is equipped with a normally closed drain valve, and the outlet 107 is connected to the inlet of the security filter.

[0035] Furthermore, the top of the vertical filter cartridge 101 is provided with a quick-release sealing cover 104. The sealing cover 104 is provided with a cleaning liquid dosing port and a reserved port for connecting the exhaust valve. Both the dosing port and the reserved port are connected to the filter chamber H-1.

[0036] Specifically, the device is installed at the front end of the reverse osmosis security filter. Wastewater enters the filter chamber H-1 through the inlet 105 and is pre-intercepted by the filter element 103 to remove microorganisms, colloids, and particulate impurities in the water. After being filtered by the filter element 103, the wastewater passes through the water outlet 102c into the water collection chamber H-2 and is then discharged through the outlet 107 into the reverse osmosis security filter. This reduces the total amount of impurities entering the reverse osmosis security filter, extends the service life of the reverse osmosis security filter element, reduces the filtration pressure of the subsequent reverse osmosis security filter, and reduces the replacement cycle of the reverse osmosis security filter element.

[0037] It is worth noting that the filter element 103 in this device is a pleated hard-surface filter cartridge made of acid and alkali resistant material. The filtration performance of the filter element 103 can be restored by chemical cleaning and water cleaning, and it can be reused.

[0038] Example 2

[0039] Reference Figures 4-9This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the mounting assembly 200 includes a support plate 201 for supporting the filter element 103 and a sleeve rod 202 arranged perpendicularly to the support plate 201. The sleeve rod 202 is fixedly connected to the support plate 201. The mounting assembly 200 is provided with six sets arranged in a circular pattern in the filter chamber H-1. Stacked filter elements 103 are sleeved on the outside of the sleeve rod 202, and a fixing pressure plate is provided on the top of the uppermost filter element 103.

[0040] Specifically, the sleeve rod 202 is a prism rod to prevent the filter element 103 from rotating due to the impact of water intake, and to maintain the stability of the filter element 103 after it is sleeved with the sleeve rod 202. The fixing plate is used to further stabilize the filter element 103.

[0041] Furthermore, a slot 202a is provided at the center of the top of the sleeve 202, and a plug rod 203 is inserted into the slot 202a. A through hole 202b is provided on the bottom surface of the slot 202a, and a sliding post 204 is provided in the through hole 202b. One end of the sliding post 204 extends into the slot 202a and is fixedly connected to the plug rod 203. The other end of the sliding post 204 extends to the bottom of the support plate 201 and is provided with a frustum block 205. A first spring 206 is provided at the bottom of the slot 202a. One end of the first spring 206 abuts against the plug rod 203, and the other end of the first spring 206 abuts against the bottom surface of the slot 202a.

[0042] Furthermore, a three-section stepped groove 205a is provided at the center of the side of the frustum block 205 away from the insertion rod 203. A first T-shaped post 207 is slidably provided in the upper section of the stepped groove 205a, and a second T-shaped post 208 is slidably provided in the middle section of the stepped groove 205a. The bottom end of the second T-shaped post 208 extends to the outside of the stepped groove 205a and is fixedly connected to a locking head 209. A second spring 210 is provided in the upper section of the stepped groove 205a. One end of the second spring 210 abuts against the first T-shaped post 207, and the other end of the second spring 210 abuts against the end face of the stepped groove 205a.

[0043] Furthermore, the second T-shaped post 208 is provided with a cylindrical groove 208a at one end adjacent to the first T-shaped post 207, and the bottom end of the first T-shaped post 207 is inserted into the cylindrical groove 208a; the outer wall of the first T-shaped post 207 is provided with a moving guide groove 207a, and the inner wall of the cylindrical groove 208a is provided with a sliding block 211 that is inserted into the moving guide groove 207a; the moving guide groove 207a includes a spiral section 207a-1, and a first vertical section 207a-2 and a second vertical section 207a-3 arranged at both ends of the spiral section 207a-1 and parallel to the axis of the first T-shaped post 207, and the included angle between the lines connecting the first vertical section 207a-2 and the second vertical section 207a-3 to the axis of the first T-shaped post 207 is 90°.

[0044] Furthermore, the locking head 209 is an inverted trapezoid, and the inclined curved surface of the locking head 209 is provided with two symmetrically arranged release grooves 209a; the bottom surface of the frustum block 205 is provided with a retaining ring 215, and the top surface of the locking head 209 is provided with a retaining groove 209b that matches the retaining ring 215.

[0045] Furthermore, the surface of the horizontal partition 102 is provided with a locking groove 102a, and the locking head 209 and the frustum block 205 can be inserted into the locking groove 102a. The side wall of the locking groove 102a is provided with two symmetrically arranged limiting grooves 102b. A limiting block 212 is slidably arranged in the limiting groove 102b. One end of the limiting block 212 extends into the locking groove 102a, and a third spring 213 is provided between the other end of the limiting block 212 and the end face of the limiting groove 102b. The end of the limiting block 212 that extends into the locking groove 102a is a right triangle with the inclined surface facing upward.

[0046] Specifically, during installation, the locking head 209 is inserted into the locking groove 102a, and the locking head 209 abuts against the limiting block 212. Through compression, the locking head 209 and the second T-shaped post 208 are pushed upwards, and the limiting block 212 moves a distance into the limiting groove 102b. The sliding block 211 moves along the moving guide groove 207a, causing the locking head 209 to rotate. When the sliding block 211 moves to the lower end of the first vertical section 207a-2, the locking head rotates 90°. At this time, the end of the limiting block 212 is directly opposite the limiting groove 102b of the locking head 209 (at this time, the limiting block 212 and the locking head 209 are in a separated state). Under the influence of gravity, the locking head 209 quickly descends to below the limiting block 212, and rotates back to its original state under the guidance of the sliding block 211 and the moving guide groove 207a. The limiting block 212 is reset under the action of the third spring 213 and is positioned between the locking head 209 and the frustum block 205, thus blocking and limiting the locking head 209 so that it cannot be pulled out directly from the locking groove 102a. This completes the fixed installation of the bearing plate 201 and the horizontal partition 102. Finally, the stacked filter elements 103 are placed on the outside of the sleeve rod 202, and a fixing pressure plate is installed on the top of the uppermost filter element 103, thus completing the installation.

[0047] Furthermore, during disassembly, the fixing plate is first removed. By pressing the insert rod 203, the sliding column 204 is moved downward. At this time, the first spring 206 is compressed, and the locking head 209 located in the locking groove 102a moves downward and contacts the bottom of the locking groove 102a. As the sliding column 204 continues to move downward, the first spring 206 is further compressed, and the second T-shaped column 208 first abuts against the first T-shaped column 207. At this time, there is still a certain gap between the locking head 209 and the frustum block 205. The limiting block 212 is squeezed by the frustum and moves into the limiting groove 102b, and the third spring 213 is compressed. As the sliding column 204 continues to move downward, the first spring 206 is further compressed. In the compression step, the locking head 209 abuts against the opposing surfaces of the frustum block 205, the retaining ring 215 is inserted into the retaining groove 209b, and the locking head 209 and the frustum block 205 are locked together. The second spring 210 is compressed under force, and at this time, the limiting block 212 abuts against the outer curved surface of the frustum block 205. Finally, the insertion rod 203 is released, the first spring 206 pushes the insertion rod 203 to reset, and drives the sliding column 204 and the frustum block 205 to move upward. The locking head 209, which is locked and fixed below the frustum block 205, is brought upward to the top of the limiting block 212, completing the disassembly of the bearing plate 201 and the horizontal partition 102. Finally, the stacked filter elements 103 are taken out from the sleeve rod 202 and disassembled.

[0048] The remaining structure is the same as that in Example 1.

[0049] Example 3

[0050] Reference Figures 5-7 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the side wall of the locking groove 102a is provided with a guide post 214, and the frustum block 205 and the locking head 209 are provided with a mounting groove 205b that is consistent with the contour of the end face of the guide post 214.

[0051] Specifically, the cooperation between the mounting slot 205b and the guide post 214 prevents the bearing plate 201 from being installed backwards when connected to the horizontal partition 102. At the same time, it also ensures that when the bearing plate 201 is connected to the horizontal partition 102, the limiting block 212 abuts against the inclined surface of the locking head 209. After the bearing plate 201 is connected to the horizontal partition 102, the limiting block 212 is located between the locking head 209 and the frustum block 205, and can intercept and limit the locking head 209.

[0052] Furthermore, the end of the locking head 209 furthest from the second T-shaped post 208 is movably connected to an embedded ball bearing.

[0053] Specifically, during the disassembly process, when the second T-shaped post 208 comes into contact with the first T-shaped post 207, the second T-shaped post 208 will rotate due to the guiding movement of the sliding block 211 by the moving guide groove 207a. By providing ball bearings, the contact between the locking head 209 and the bottom of the locking groove 102a is point contact, and the friction is rolling friction with a small coefficient of friction, making the rotation of the second T-shaped post 208 smoother.

[0054] The remaining structure is the same as that in Example 2.

[0055] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0056] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0057] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for mitigating fouling of a reverse osmosis security filter element, characterized in that: include, A filter assembly (100) includes a vertical filter cartridge (101) with an internal water treatment space (H) and an open top. A horizontal partition (102) is provided in the water treatment space (H), which divides the water treatment space (H) from top to bottom into a filter chamber (H-1) and a water collection chamber (H-2). A filter element (103) is provided in the filter chamber (H-1), which is used to pre-intercept microorganisms, colloidal and particulate impurities in the water. The mounting assembly (200) includes a support plate (201) for supporting the filter elements (103) and a sleeve (202) arranged perpendicularly to the support plate (201), on which stacked filter elements (103) are sleeved. A slot (202a) is provided at the center of the top of the sleeve (202), and a plug rod (203) is inserted into the slot (202a). A through hole (202b) is provided on the bottom surface of the slot (202a), and a sliding post (204) is provided in the through hole (202b). One end of the sliding post (204) extends into the slot (202a) and is fixedly connected to the plug rod (203). The other end of the sliding post (204) extends to the bottom of the bearing plate (201) and is provided with a frustum block (205). A first spring (206) is provided at the bottom of the slot (202a). One end of the first spring (206) abuts against the insertion rod (203), and the other end of the first spring (206) abuts against the bottom surface of the slot (202a). The frustum block (205) has a three-section stepped groove (205a) at the center of the side away from the insertion rod (203). A first T-shaped post (207) is slidably arranged in the upper section of the stepped groove (205a), and a second T-shaped post (208) is slidably arranged in the middle section of the stepped groove (205a). The bottom end of the second T-shaped post (208) extends outside the stepped groove (205a) and is fixedly connected to a locking head (209). A second spring (210) is provided in the upper stage of the stepped groove (205a). One end of the second spring (210) abuts against the first T-shaped post (207), and the other end of the second spring (210) abuts against the end face of the stepped groove (205a). The second T-shaped post (208) is provided with a cylindrical groove (208a) at one end adjacent to the first T-shaped post (207), and the bottom end of the first T-shaped post (207) is inserted into the cylindrical groove (208a); The outer wall of the first T-shaped column (207) is provided with a movable guide groove (207a), and the inner wall of the cylindrical groove (208a) is provided with a sliding block (211) that is inserted into the movable guide groove (207a). The movable guide groove (207a) includes a spiral section (207a-1), and a first vertical section (207a-2) and a second vertical section (207a-3) arranged at both ends of the spiral section (207a-1) and parallel to the axis of the first T-shaped column (207). The included angle between the lines connecting the first vertical section (207a-2) and the second vertical section (207a-3) to the axis of the first T-shaped column (207) is 90°. The locking head (209) is in the shape of an inverted trapezoid, and the inclined surface of the locking head (209) is provided with two symmetrically arranged release grooves (209a). The bottom surface of the frustum block (205) is provided with a retaining ring (215), and the top surface of the locking head (209) is provided with a retaining groove (209b) that is compatible with the retaining ring (215). The surface of the horizontal partition (102) is provided with a locking groove (102a), and the locking head (209) and the frustum block (205) can be inserted into the locking groove (102a). The side wall of the locking groove (102a) is provided with two symmetrically arranged limiting grooves (102b). A limiting block (212) is slidably arranged in the limiting groove (102b). One end of the limiting block (212) extends into the locking groove (102a), and a third spring (213) is provided between the other end of the limiting block (212) and the end face of the limiting groove (102b). The end of the limiting block (212) extending into the locking groove (102a) is a right triangle with the inclined surface facing upward; The side wall of the locking groove (102a) is provided with a guide post (214), and the frustum block (205) and the locking head (209) are provided with a mounting groove (205b) that is consistent with the end face contour of the guide post (214).

2. The device for mitigating fouling of reverse osmosis security filter cartridges as described in claim 1, characterized in that: The surface of the horizontal partition (102) is evenly distributed with water flow holes (102c) connecting the filter chamber (H-1) and the water collection chamber (H-2); the top of the vertical filter cylinder (101) is provided with a quick-release sealing cap (104); the upper end of the side wall of the vertical filter cylinder (101) is provided with a water inlet (105) connecting the filter chamber (H-1) and a backwash drain outlet (106); the lower end of the side wall of the vertical filter cylinder (101) is provided with a water outlet (107) connecting the water collection chamber (H-2) and a sewage outlet (108).

Images