Anti-blocking uniform water distribution system for subsurface flow wetland

Abstract

The invention discloses a subsurface flow wetland anti-clogging uniform water distribution system, which solves the problem that large impurities enter a wetland system along with sewage to easily cause the clogging of the wetland system, and comprises a pool body, the inner side of the pool body is provided with a wetland area, the wetland area is composed of a filler at the bottom and wetland plants cultured above the filler, and the bottom of the wetland area is provided with a water inlet and a water outlet. A water inlet part is mounted on one side of the tank body, a drainage part is arranged on the other side of the tank body, the water inlet part comprises a water inlet filtering assembly arranged on one side of the tank body, a main water inlet pipe is mounted on one side, close to the tank body, of the water inlet filtering assembly, and water inlet branch pipes are mounted between the main water inlet pipe and the tank body at equal intervals; in the working process, the top pipe is arranged between the baffle and the baffle ring, first-time filtering is achieved through the second filtering holes in the filtering cylinder and the baffle ring, second-time filtering is achieved through the first filtering holes in the top of the middle pipeline, the two filtering pieces are arranged in series, the filtering effect is improved, and follow-up circulation of sewage is prevented from being blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of water distribution systems, and in particular relates to a subsurface wetland anti-clogging uniform water distribution system. Background Art

[0002] Horizontal subsurface flow wetland is a type of artificial wetland. Artificial wetlands are ecosystems composed of substrates, water bodies, plants, animals and microorganisms. Microorganisms living in the soil play a major role in the removal of organic matter. The roots of wetland plants bring oxygen into the surrounding soil. Artificial wetlands combine physical, chemical and biological effects in the treatment of wastewater. After the wetland system matures, a biofilm will form on the surface of the filler and the root system of the plants due to the growth of a large number of microorganisms. When the wastewater flows through the biofilm, a large amount of suspended matter is blocked and intercepted by the filler and the root system of the plants, and organic pollutants are removed through the absorption, assimilation and alienation of the biofilm. Finally, the wetland system replaces the filler or harvests the planted plants to finally remove the pollutants. When treating sewage, it is necessary to evenly pass the sewage into the wetland system for treatment, but there are the following defects:

[0003] When sewage contains a large amount of impurities, the larger impurities are not treated, so that the larger impurities enter the wetland system along with the sewage, which can easily cause the wetland system to be blocked, thus affecting subsequent treatment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a submerged flow wetland anti-clogging uniform water distribution system, which effectively solves the problem that larger impurities enter the wetland system along with sewage, which easily causes the wetland system to be blocked.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a subsurface wetland anti-clogging uniform water distribution system, comprising a pool body, a wetland area is arranged inside the pool body, the wetland area is composed of fillers at the bottom and wetland plants cultivated above the fillers, a water inlet is installed on one side of the pool body, and a drainage part is arranged on the other side of the pool body;

[0006] The water inlet component includes a water inlet filter assembly arranged on one side of the pool body, a main water inlet pipe is installed on the side of the water inlet filter assembly close to the pool body, and a water inlet branch pipe is installed equidistantly between the main water inlet pipe and the pool body; the drainage component includes a drainage box arranged on the other side of the pool body, a main drainage pipe is installed on the side of the drainage box close to the pool body, and drainage branches are installed equidistantly between the pool body and the main drainage pipe;

[0007] The water inlet filter assembly includes a box body, one side of the box body is provided with an end circular groove, the other side of the box body is installed with an end tube, the top end of the end tube is installed with a top tube, and a middle pipe is installed inside the box body. The two ends of the middle pipe are respectively connected with the end circular groove and the end tube, and the inner diameter of the middle pipe, the inner diameter of the end circular groove and the inner diameter of the end tube are the same. The top end of the middle pipe is evenly provided with first filter holes, and the inside of the end tube is provided with a first filter unit. The first filter unit is used for performing a first filter treatment on the sewage, and the first filter hole is used for performing a second filter treatment on the sewage, thereby realizing multi-stage treatment of the sewage.

[0008] Preferably, the first filter unit includes a baffle plate arranged on the inner side of the end tube, the outer wall of the baffle plate is in close contact with the inner wall of the end tube, a filter cartridge is fixedly installed on the side of the baffle plate close to the middle tube, the diameter of the filter cartridge is smaller than the diameter of the baffle plate, a baffle ring is sleeved on the outer side of one end of the filter cartridge away from the baffle plate, the outer wall of the baffle ring is in close contact with the inner wall of the end tube, the inner wall of the baffle ring is in close contact with the outer wall of the filter cartridge, the baffle plate and the baffle ring are respectively located on both sides of the top tube, second filter holes are evenly opened on the filter cartridge and the baffle ring, the diameter of the second filter hole is larger than the diameter of the first filter hole, and a second clamping unit is installed on the baffle ring.

[0009] Preferably, the baffle ring is symmetrically provided with rod grooves, a guide rod is symmetrically installed on the side of the baffle plate close to the baffle ring, the guide rod is inserted into the rod groove, a limiting plate is installed at one end of the guide rod, the limiting plate is in contact with the side of the baffle ring close to the middle pipe, a fixing plate is symmetrically installed on the inner wall of the end of the filter cartridge away from the baffle plate, and a pushing drive unit is arranged inside the filter cartridge.

[0010] Preferably, the pushing drive unit includes a plate groove opened inside the baffle plate, the diameter of the plate groove is the same as the inner diameter of the filter cartridge, the plate groove is connected with the filter cartridge, a push plate is movably installed inside the plate groove, the outer wall of the push plate is in close contact with the inner wall of the plate groove, and card grooves are symmetrically opened on both sides of the push plate, a first card connection unit is installed between the baffle plate and the push plate, a stop block is installed inside the end circular groove, and a push rod is installed between the stop block and the push plate.

[0011] Preferably, the block is symmetrically provided with first movable grooves inside, and the two first movable grooves are provided with first end grooves at one end away from each other, and a first clamping block is movably installed inside the first end groove, and one end of the first clamping block is clamped into the clamping groove, and the clamping groove is symmetrically provided on the inner wall of the end circular groove.

[0012] Preferably, a first spring is symmetrically installed at the other end of the first clamping block, a first through groove is opened on the side of the first movable groove away from the push rod, a handle is installed on the side of the block away from the push rod, pressure plates are symmetrically arranged on both sides of the handle, and a connecting rod is installed between the pressure plate and the first clamping block.

[0013] Preferably, the first clamping unit includes two second movable grooves symmetrically opened inside the baffle, a second end groove is opened on the side close to each other, a second clamping block is movably installed inside the second end groove, one end of the second clamping block is inserted into the inside of the clamping groove, a second spring is symmetrically installed on the other end of the second clamping block, a second through groove is opened on the side of the second movable groove away from the filter cartridge, a push plate is installed on the second clamping block, and the push plate is slidably connected to the second through groove.

[0014] Preferably, the second clamping unit includes two movable grooves opened inside the retaining ring, the two movable grooves are symmetrically opened on the side of the two rod grooves away from each other, one end of the movable groove penetrates to the side of the retaining ring close to the baffle, and a third end groove is opened on the side of the movable groove away from the filter cartridge, and a third clamping block is movably installed inside the third end groove, one end of the third clamping block is clamped into the interior of the positioning groove, and the positioning groove is symmetrically opened on the inner wall of one end of the middle pipe close to the end pipe.

[0015] Preferably, a push block is movably installed inside the movable groove, and a connecting rod is hingedly installed on one end of the push block close to the third clamping block, and the other end of the connecting rod is hinged to an end of the third clamping block located inside the movable groove, and a third spring is symmetrically installed on the end of the push block away from the baffle, and one end of the third spring is fixedly connected to the end inner wall of the movable groove. The push block moves toward the inside of the movable groove, and the third clamping block is disengaged from the positioning groove by pulling the connecting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) During operation, the top pipe is arranged between the baffle and the baffle ring, the second filter holes on the filter cartridge and the baffle ring realize the first filtration, and the first filter hole on the top of the middle pipe realizes the second filtration, so that the two filter elements are arranged in series, the filtration effect is improved, and the subsequent flow of sewage is prevented from being blocked;

[0018] 2) During operation, the push plate is connected to the baffle plate by a clamping connection. When the push plate is pushed by the push rod to move toward the side away from the middle pipe, the baffle plate and the baffle ring can be pushed to the outside of the end pipe, thereby facilitating the cleaning of impurities between the baffle plate and the baffle ring and facilitating subsequent filtration;

[0019] 3) During operation, after the baffle plate is disengaged from the push plate, the push rod is pulled toward one side of the end circular groove until the push plate contacts the fixed plate to push out the impurities inside the filter cartridge. At the same time, the baffle plate is pulled tightly against the retaining ring and continues to move toward the end circular groove, which can push out the impurities inside the middle pipe, making it easier to clean the inside of the middle pipe and facilitate subsequent filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture:

[0022] Figure 1 It is a schematic diagram of the structure of a subsurface wetland anti-clogging uniform water distribution system of the present invention;

[0023] Figure 2 It is a schematic diagram of the box structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the water inlet filter assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the middle pipeline structure of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the first filter unit of the present invention;

[0027] Figure 6 It is a schematic diagram of the internal structure of the filter cartridge of the present invention;

[0028] Figure 7 It is a schematic diagram of the block structure of the present invention;

[0029] Figure 8 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0030] Fig. 9 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0031] In the figure: 1, pool body; 2, wetland area; 3, water inlet filter assembly; 301, box body; 302, end circular groove; 303, end pipe; 304, top pipe; 305, middle pipe; 306, first filter hole; 307, snap-in groove; 308, positioning groove; 309, first filter unit; 3091, baffle; 3092, filter cartridge; 3093, baffle ring; 3094, second filter hole; 3095, fixing plate; 3096, rod groove; 3097, guide rod; 3098, limit plate; 310, push drive unit; 3101, plate groove; 3102, push plate; 3103, snap-in groove; 3104, push rod; 3105, block; 3106, handle; 3107, first Movable slot; 3108, first end slot; 3109, first clamping block; 31010, first spring; 31011, first through slot; 31012, connecting rod; 31013, pressing plate; 311, first clamping unit; 3111, second movable slot; 3112, second end slot; 3113, second clamping block; 3114, second spring; 3115, second through slot; 3116, pushing plate; 312, second clamping unit; 3121, movable slot; 3122, third end slot; 3123, third clamping block; 3124, pushing block; 3125, connecting rod; 3126, third spring; 4, main water inlet pipe; 5, water inlet branch pipe; 6, drainage box; 7, main drainage pipe; 8, drainage branch pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Depend on Figure 1-9 The present invention relates to a submerged wetland anti-clogging uniform water distribution system, comprising a pool body 1, a wetland area 2 is arranged inside the pool body 1, the wetland area 2 is composed of a filler at the bottom and wetland plants cultivated above the filler, a water inlet is installed on one side of the pool body 1, and a drainage part is arranged on the other side of the pool body 1;

[0034] The water inlet component includes a water inlet filter assembly 3 arranged on one side of the pool body 1, a main water inlet pipe 4 is installed on the side of the water inlet filter assembly 3 close to the pool body 1, and a water inlet branch pipe 5 is installed equidistantly between the main water inlet pipe 4 and the pool body 1. The drainage component includes a drainage box 6 arranged on the other side of the pool body 1, a main drainage pipe 7 is installed on the side of the drainage box 6 close to the pool body 1, and drainage branch pipes 8 are installed equidistantly between the pool body 1 and the main drainage pipe 7;

[0035] The water inlet filter assembly 3 includes a box body 301, one side of the box body 301 is provided with an end circular groove 302, the other side of the box body 301 is installed with an end tube 303, the top of the end tube 303 is installed with a top tube 304, and the inside of the box body 301 is installed with a middle pipe 305, the two ends of the middle pipe 305 are respectively connected with the end circular groove 302 and the end tube 303, and the inner diameter of the middle pipe 305, the inner diameter of the end circular groove 302 and the inner diameter of the end tube 303 are the same, the top of the middle pipe 305 is evenly provided with first filter holes 306, and the inside of the end tube 303 is provided with a first filter unit 309, the first filter unit 309 is used for performing a first filtering treatment on the sewage, and the first filter hole 306 is used for performing a second filtering treatment on the sewage, thereby realizing multi-stage treatment of the sewage.

[0036] The first filter unit 309 includes a baffle 3091 arranged on the inner side of the end tube 303, the outer wall of the baffle 3091 is in close contact with the inner wall of the end tube 303, a filter cartridge 3092 is fixedly installed on the side of the baffle 3091 close to the middle pipe 305, the diameter of the filter cartridge 3092 is smaller than the diameter of the baffle 3091, a baffle ring 3093 is sleeved on the outer side of the end of the filter cartridge 3092 away from the baffle 3091, the outer wall of the baffle ring 3093 is in close contact with the inner wall of the end tube 303, the inner wall of the baffle ring 3093 is in close contact with the outer wall of the filter cartridge 3092, the baffle 3091 and the baffle ring 3093 are respectively located on both sides of the top tube 304, second filter holes 3094 are evenly opened on the filter cartridge 3092 and the baffle ring 3093, the diameter of the second filter hole 3094 is larger than the diameter of the first filter hole 306, a second clamping unit 312 is installed on the baffle ring 3093, and the baffle ring 312 is installed on the baffle ring 312. 093 is symmetrically provided with rod grooves 3096, and a guide rod 3097 is symmetrically installed on one side of the baffle 3091 close to the baffle ring 3093, and the guide rod 3097 is inserted into the rod groove 3096, and a limiting plate 3098 is installed at one end of the guide rod 3097, and the limiting plate 3098 contacts with a side of the baffle ring 3093 close to the middle pipe 305. A fixing plate 3095 is symmetrically installed on the inner wall of the end of the filter cartridge 3092 away from the baffle 3091, and a pushing drive unit 310 is arranged inside the filter cartridge 3092, and the top tube 304 is arranged between the baffle 3091 and the baffle ring 3093. The second filter hole 3094 on the filter cartridge 3092 and the baffle ring 3093 realizes the first filtration, and the first filter hole 306 at the top of the middle pipe 305 realizes the second filtration, so that the two filter elements are arranged in series to improve the filtering effect and avoid the subsequent circulation of sewage from being blocked.

[0037] The push drive unit 310 includes a plate groove 3101 opened inside the baffle 3091, the diameter of the plate groove 3101 is the same as the inner diameter of the filter cartridge 3092, the plate groove 3101 is connected to the filter cartridge 3092, a push plate 3102 is movably installed inside the plate groove 3101, the outer wall of the push plate 3102 is tightly attached to the inner wall of the plate groove 3101, and the two sides of the push plate 3102 are symmetrically provided with card slots 3103, a first card connection unit 311 is installed between the baffle 3091 and the push plate 3102, and a stopper 3105 is installed inside the end circular groove 302. A push rod 3104 is installed between the block 3105 and the push plate 3102. The push plate 3102 is connected to the baffle 3091 by a snap connection. When the push plate 3102 is pushed by the push rod 3104 to move toward the side away from the middle pipe 305, the baffle 3091 and the baffle ring 3093 can be pushed to move to the outside of the end pipe 303, so as to facilitate the cleaning of impurities between the baffle 3091 and the baffle ring 3093 and facilitate subsequent filtration. The inside of the block 3105 is symmetrically provided with first movable grooves 3107, and the ends of the two first movable grooves 3107 away from each other are both provided with The first end groove 3108 has a first clamping block 3109 movably installed inside the first end groove 3108, one end of the first clamping block 3109 is inserted into the clamping groove 307, the clamping groove 307 is symmetrically arranged on the inner wall of the end circular groove 302, the other end of the first clamping block 3109 is symmetrically installed with a first spring 31010, a first through groove 31011 is arranged on the side of the first movable groove 3107 away from the push rod 3104, a handle 3106 is installed on the side of the stopper 3105 away from the push rod 3104, and pressure relief members 3106 are symmetrically arranged on both sides of the handle 3106. Plate 31013, a connecting rod 31012 is installed between the pressure plate 31013 and the first clamping block 3109. After the baffle plate 3091 and the push plate 3102 are disengaged, the push rod 3104 is pulled toward the side of the end circular groove 302 until the push plate 3102 contacts the fixed plate 3095, and the impurities inside the filter cartridge 3092 are pushed out. At the same time, the baffle plate 3091 is pulled tightly against the retaining ring 3093 and then continues to move toward the end circular groove 302, which can push out the impurities inside the middle pipe 305, facilitate cleaning of the inside of the middle pipe 305, and facilitate subsequent filtration.

[0038] The first clamping unit 311 includes two second movable grooves 3111 symmetrically opened inside the baffle 3091, and a second end groove 3112 is opened on the side where the two second movable grooves 3111 are close to each other, and a second clamping block 3113 is movably installed inside the second end groove 3112, one end of the second clamping block 3113 is inserted into the interior of the clamping groove 3103, and a second spring 3114 is symmetrically installed on the other end of the second clamping block 3113, and a second through groove 3115 is opened on the side of the second movable groove 3111 away from the filter cartridge 3092, and a push plate 3116 is installed on the second clamping block 3113, and the push plate 3116 is slidably connected to the second through groove 3115.

[0039] The second clamping unit 312 includes two movable grooves 3121 opened in the retaining ring 3093, and the two movable grooves 3121 are symmetrically opened on the side of the two rod grooves 3096 away from each other. One end of the movable groove 3121 penetrates to the side of the retaining ring 3093 close to the baffle 3091, and a third end groove 3122 is opened on the side of the movable groove 3121 away from the filter cartridge 3092. A third clamping block 3123 is movably installed inside the third end groove 3122, and one end of the third clamping block 3123 is clamped into the interior of the positioning groove 308. The positioning groove 308 is symmetrically opened on one side of the middle pipe 305 close to the end pipe 303. On the inner wall of the end, a push block 3124 is movably installed inside the movable groove 3121, and a connecting rod 3125 is hingedly installed at one end of the push block 3124 close to the third clamping block 3123, and the other end of the connecting rod 3125 is hinged to an end of the third clamping block 3123 located inside the movable groove 3121, and a third spring 3126 is symmetrically installed at the end of the push block 3124 away from the baffle 3091, and one end of the third spring 3126 is fixedly connected to the inner wall of the end of the movable groove 3121. The push block 3124 moves toward the inside of the movable groove 3121, and pulls the third clamping block 3123 to disengage from the positioning groove 308 through the connecting rod 3125.

[0040] Working principle: When working, first, a wetland area 2 is set inside the pool body 1, and the wetland area 2 is composed of fillers and plants above the fillers. The sewage is passed into the water inlet filter component 3 for filtering treatment, and then evenly passed into the wetland area 2 through the water inlet branch pipes 5 evenly arranged on the main water inlet pipe 4. When the sewage passes through the fillers inside the wetland area 2, the extremely small gaps in the fillers process the small particles of impurities in the sewage, and at the same time absorb the harmful substances in the sewage. Then the treated sewage enters the drainage box 6 from the drainage branch pipe 8 and the main drainage pipe 7 for subsequent treatment;

[0041] When sewage passes from the top pipe 304 into the end pipe 303, since the baffle 3091 and the baffle ring 3093 are respectively arranged on both sides of the top pipe 304, the sewage enters the middle pipe 305 from the second filter hole 3094 on the filter cartridge 3092 and the baffle ring 3093, completing the first filtration, and the filtered impurities remain between the baffle 3091 and the baffle ring 3093. After the sewage enters the middle pipe 305, it flows upward through the first filter hole 306 at the top of the middle pipe 305, completing the second filtration. The two filter elements are used in series to improve the filtration effect and reduce the blockage of the subsequent sewage flow process. After the second filtration, the sewage enters the box body 301 and then evenly distributes water.

[0042] When it is necessary to clean the filtered impurities, perform the following operations:

[0043] First, the user holds the handle 3106 and the pressing plate 31013, pulls the first clamping block 3109 toward the inside of the first movable groove 3107, so that the first clamping block 3109 is disengaged from the clamping groove 307, and then pushes the baffle plate 3091 to move toward the side away from the middle pipe 305, and pushes the baffle plate 3091 and the baffle ring 3093 to the outside of the end pipe 303, so as to facilitate cleaning of impurities between the baffle plate 3091 and the baffle ring 3093, and moves back to the original position after cleaning;

[0044] Then, the second clamping block 3113 is pulled toward the inside of the second movable groove 3111 by the push plate 3116, so that the second clamping block 3113 is disengaged from the clamping groove 3103, and then the push rod 3104 is pulled toward the side of the middle pipe 305 until the push plate 3102 contacts the fixing plate 3095, thereby pressing out the impurities in the filter cartridge 3092, and then the filter cartridge 3092 is pulled toward the side of the middle pipe 305 until the baffle plate 3091 contacts the baffle ring 3093. When the plate 3091 contacts the retaining ring 3093, pressure is generated on the push block 3124, pushing the push block 3124 to move toward the inside of the movable groove 3121, and then the third clamping block 3123 is pulled toward the inside of the movable groove 3121 through the connecting rod 3125, so that the third clamping block 3123 is disengaged from the positioning groove 308, and then the retaining ring 3093 is pulled toward one end of the end circular groove 302 to push out impurities in the middle pipe 305, thereby facilitating the cleaning of impurities inside the middle pipe 305.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subsurface wetland anti-clogging uniform water distribution system, comprising a pool body (1), characterized in that: A wetland area (2) is arranged inside the pool body (1), the wetland area (2) is composed of fillers at the bottom and wetland plants cultivated above the fillers, a water inlet is installed on one side of the pool body (1), and a drainage member is arranged on the other side of the pool body (1); The water inlet component comprises a water inlet filter assembly (3) arranged on one side of the pool body (1); a main water inlet pipe (4) is installed on the side of the water inlet filter assembly (3) close to the pool body (1); a water inlet branch pipe (5) is installed equidistantly between the main water inlet pipe (4) and the pool body (1); the drainage component comprises a drainage box (6) arranged on the other side of the pool body (1); a main drainage pipe (7) is installed on the side of the drainage box (6) close to the pool body (1); and drainage branch pipes (8) are installed equidistantly between the pool body (1) and the main drainage pipe (7); The water inlet filter assembly (3) comprises a box body (301), one side of the box body (301) is provided with an end circular groove (302), the other side of the box body (301) is provided with an end tube (303), the top end of the end tube (303) is provided with a top tube (304), a middle pipe (305) is provided inside the box body (301), two ends of the middle pipe (305) are respectively connected with the end circular groove (302) and the end tube (303), and the inner diameter of the middle pipe (305), the inner diameter of the end circular groove (302) and the inner diameter of the end tube (303) are the same, first filter holes (306) are evenly provided at the top end of the middle pipe (305), and a first filter unit (309) is provided inside the end tube (303), the first filter unit (309) is used for performing a first filter treatment on sewage, and the first filter hole (306) is used for performing a second filter treatment on sewage, thereby realizing multi-stage treatment of sewage.

2. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 1 is characterized by: The first filter unit (309) comprises a baffle (3091) arranged on the inner side of the end tube (303); the outer wall of the baffle (3091) is in close contact with the inner wall of the end tube (303); a filter cartridge (3092) is fixedly mounted on the side of the baffle (3091) close to the middle tube (305); the diameter of the filter cartridge (3092) is smaller than the diameter of the baffle (3091); a baffle ring (3093) is sleeved on the outer side of one end of the filter cartridge (3092) away from the baffle (3091); the baffle ring (3093) ) is in close contact with the inner wall of the end tube (303), the inner wall of the retaining ring (3093) is in close contact with the outer wall of the filter cartridge (3092), the baffle plate (3091) and the retaining ring (3093) are respectively located on both sides of the top tube (304), second filter holes (3094) are evenly formed on the filter cartridge (3092) and the retaining ring (3093), the diameter of the second filter hole (3094) is greater than the diameter of the first filter hole (306), and a second clamping unit (312) is installed on the retaining ring (3093).

3. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 2 is characterized by: The retaining ring (3093) is symmetrically provided with rod grooves (3096); a guide rod (3097) is symmetrically installed on one side of the retaining plate (3091) close to the retaining ring (3093); the guide rod (3097) is inserted into the rod groove (3096); a limit plate (3098) is installed on one end of the guide rod (3097); the limit plate (3098) is in contact with a side of the retaining ring (3093) close to the middle pipe (305); a fixing plate (3095) is symmetrically installed on the inner wall of one end of the filter cartridge (3092) away from the retaining plate (3091); and a push drive unit (310) is arranged inside the filter cartridge (3092).

4. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 3 is characterized by: The push drive unit (310) comprises a plate groove (3101) provided inside the baffle plate (3091); the diameter of the plate groove (3101) is the same as the inner diameter of the filter cartridge (3092); the plate groove (3101) is connected to the filter cartridge (3092); a push plate (3102) is movably installed inside the plate groove (3101); the outer wall of the push plate (3102) is in close contact with the inner wall of the plate groove (3101); clamping grooves (3103) are symmetrically provided on both sides of the push plate (3102); a first clamping unit (311) is installed between the baffle plate (3091) and the push plate (3102); a stopper (3105) is installed inside the end circular groove (302); and a push rod (3104) is installed between the stopper (3105) and the push plate (3102).

5. The anti-clogging and uniform water distribution system for subsurface wetlands according to claim 4 is characterized by: The stopper (3105) is symmetrically provided with first movable grooves (3107) at one end away from each other. A first end groove (3108) is provided at one end of the two first movable grooves (3107). A first clamping block (3109) is movably installed inside the first end groove (3108). One end of the first clamping block (3109) is clamped into the clamping groove (307). The clamping groove (307) is symmetrically provided on the inner wall of the end circular groove (302).

6. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 5 is characterized by: A first spring (31010) is symmetrically mounted on the other end of the first clamping block (3109); a first through slot (31011) is provided on the side of the first movable slot (3107) away from the push rod (3104); a handle (3106) is mounted on the side of the stopper (3105) away from the push rod (3104); pressure plates (31013) are symmetrically mounted on both sides of the handle (3106); and a connecting rod (31012) is mounted between the pressure plate (31013) and the first clamping block (3109).

7. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 4 is characterized by: The first clamping unit (311) comprises two second movable grooves (3111) symmetrically arranged inside the baffle (3091); a second end groove (3112) is arranged on the side of the two second movable grooves (3111) close to each other; a second clamping block (3113) is movably installed inside the second end groove (3112); one end of the second clamping block (3113) is clamped into the inside of the clamping groove (3103); a second spring (3114) is symmetrically installed on the other end of the second clamping block (3113); a second through groove (3115) is arranged on the side of the second movable groove (3111) away from the filter cartridge (3092); a push plate (3116) is installed on the second clamping block (3113); and the push plate (3116) is slidably connected to the second through groove (3115).

8. The anti-clogging and uniform water distribution system for subsurface wetlands according to claim 2 is characterized by: The second clamping unit (312) comprises two movable grooves (3121) provided inside the retaining ring (3093); the two movable grooves (3121) are symmetrically provided on the sides of the two rod grooves (3096) that are away from each other; one end of the movable groove (3121) penetrates to the side of the retaining ring (3093) close to the baffle (3091); a third end groove (3122) is provided on the side of the movable groove (3121) that is away from the filter cartridge (3092); a third clamping block (3123) is movably installed inside the third end groove (3122); one end of the third clamping block (3123) is clamped into the inside of the positioning groove (308); and the positioning groove (308) is symmetrically provided on the inner wall of one end of the middle pipe (305) close to the end pipe (303).

9. The anti-clogging uniform water distribution system for subsurface wetlands according to claim 8, characterized in that: A push block (3124) is movably installed inside the movable groove (3121); a connecting rod (3125) is hingedly installed on one end of the push block (3124) close to the third clamping block (3123); the other end of the connecting rod (3125) is hingedly connected to one end of the third clamping block (3123) located inside the movable groove (3121); a third spring (3126) is symmetrically installed on one end of the push block (3124) away from the baffle (3091); one end of the third spring (3126) is fixedly connected to the inner wall of the end of the movable groove (3121); the push block (3124) moves toward the inside of the movable groove (3121) and pulls the third clamping block (3123) to disengage from the positioning groove (308) through the connecting rod (3125).

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