Fabricated composite ecological filter bed

Abstract

The invention discloses an assembly type composite ecological filter bed, which solves the problem that frequent equipment disassembly and assembly work needs to be executed and is troublesome when the filter bed needs to be disassembled or added, and comprises a water inlet pipe and a water drainage pipe, a bottom filter box is fixedly mounted between the water inlet pipe and the water drainage pipe, and a plurality of middle filter boxes are arranged above the bottom filter box at equal intervals; a top filter box is mounted at the top of the uppermost middle filter box, partition plates are mounted in the bottom filter box, the middle filter boxes and the top filter box, clamping and fixing assemblies are arranged among the bottom filter box, the middle filter boxes and the top filter box, and pressing and sealing assemblies are arranged at the bottoms of the middle filter boxes and the bottom of the top filter box; according to the invention, during working, the pressed driving assembly, the movable separation assembly and the pressing mounting assembly are arranged, so that the two filter cavities of each filter box can be separated, and meanwhile, the filter boxes can be jointly locked.

Description

Technical Field

[0001] The invention belongs to the technical field of ecological filter beds, and in particular relates to an assembled composite ecological filter bed. Background Art

[0002] According to the patent document with the authorization announcement number of "CN204111531U" and the invention name of "Vertical Flow Micro-aeration Ecological Filter Bed", the specification states: the ecological filter bed unit includes a plurality of vertically arranged filter beds, each filter bed is arranged with a plurality of water-permeable holes at the bottom, the sewage in the upper filter bed enters the next filter bed through the water-permeable holes, the filter bed is provided with functional fillers, the filter bed is connected to the micro-power aeration and oxygenation system, the micro-power aeration and oxygenation system supplies oxygen to the filter bed and keeps it in an aerobic environment; the micro-power aeration and oxygenation system includes a fan and an aeration pipe network system installed in the machine room, but still has the following defects:

[0003] Two adjacent filter beds are fixedly installed by a separate fixing structure. When the filter bed needs to be removed or added, frequent equipment disassembly and assembly work is required, and linkage locking cannot be performed, which makes the disassembly and assembly process troublesome and reduces the use efficiency. 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 an assembled composite ecological filter bed, which effectively solves the problem of frequent and troublesome equipment disassembly and assembly work when the filter bed needs to be disassembled or added.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled composite ecological filter bed, comprising an inlet pipe and a drain pipe, a bottom filter box is fixedly installed between the inlet pipe and the drain pipe, a plurality of middle filter boxes are arranged in sequence from bottom to top above the bottom filter box, a top filter box is installed on the top of the top middle filter box, a partition is installed inside the bottom filter box, inside the middle filter box and inside the top filter box, a clamping fixing assembly is arranged between the bottom filter box, the middle filter box and the top filter box, a compression sealing assembly is arranged at the bottom of the middle filter box and the bottom of the top filter box, and the inside of the bottom filter box, the middle filter box and the top filter box are divided into two filter chambers by the partition;

[0006] A pressure-driven assembly is installed inside the partition on the bottom filter box, a movable partition assembly is installed inside the partition on the middle filter box, and a pressure-driven mounting assembly is installed inside the partition on the top filter box. The pressure-driven assembly, the movable partition assembly and the pressure-driven mounting assembly can separate the two filter cavities of each filter box and jointly lock each filter box at the same time;

[0007] A bottom connecting component is provided inside the filter chamber, and the bottom connecting component includes bottom grooves equidistantly opened on the bottom wall of the filter chamber, a fixed cylinder is installed on the top of the bottom groove, and side grooves are opened at equal angles on the outside of the fixed cylinder. Each filter chamber close to the water inlet pipe side forms an upstream filter channel, and each filter chamber close to the drain pipe side forms a downstream filter channel. The diameter of the filler filled in the filter chamber through which the upstream filter channel and the downstream filter channel pass in sequence decreases in sequence, and the gap between the fillers decreases in sequence. The water flows in sequence to the water inlet pipe, the upstream filter channel, the top filter box, the downstream filter channel and the drain pipe.

[0008] Preferably, the snap-fit ​​fixing assembly includes side boxes symmetrically installed on the two side surfaces of the bottom filter box and the two side surfaces of the middle filter box, the two side boxes are respectively located at the two ends of the partition, two vertical boxes are symmetrically installed on the top of the side box, the bottom end of the upper side box of the middle filter box and the two side surfaces of the top filter box are both installed with bottom boxes, and snap-fit ​​grooves are symmetrically opened on both sides of the bottom box.

[0009] Preferably, two movable plates are symmetrically and movably installed inside the side box, the top ends of the movable plates are inserted into the interior of the vertical box, and blocks are installed on the sides of the movable plates located inside the vertical box that are close to each other. An L-shaped plate body is fixedly installed on the bottom end of the movable plate on the middle filter box, and the L-shaped plate body is movably installed inside the bottom box, and a first spring is installed between the two movable plates.

[0010] Preferably, the pressure-driven component includes a convex groove opened inside the upper partition of the bottom filter box, a convex plate is movably installed inside the convex groove, a second spring is symmetrically installed at the bottom end of the convex plate, the bottom end of the second spring is fixedly connected to the bottom end of the convex groove and the inner bottom wall of the convex groove, and a pressure-driven pushing member is installed at the bottom end of the convex plate.

[0011] Preferably, the pressure-actuated push member includes two first connecting rods symmetrically hingedly installed at the bottom end of the convex plate, and the bottom ends of the two first connecting rods are hingedly installed with cross rods, and the ends of the two cross rods are respectively inserted laterally into the two convex grooves, and two second connecting rods are symmetrically hingedly installed on the outer side of one end of the cross rod located inside the convex groove, and the other ends of the two second connecting rods are respectively hingedly installed with the two movable plates.

[0012] Preferably, the movable partition assembly includes a center-shaped groove opened inside the upper partition of the middle filter box, a center-shaped plate is movably installed inside the center-shaped groove, a third spring is evenly installed on the upper bottom wall of the center-shaped plate, and the bottom end of the third spring is fixedly connected to the inner bottom wall of the center-shaped groove.

[0013] Preferably, the press-actuated mounting assembly includes a T-shaped groove opened inside the upper partition of the top filter box, a T-shaped plate is movably installed inside the T-shaped groove, a fourth spring is evenly installed on the upper bottom wall of the T-shaped plate, the bottom end of the fourth spring is fixedly connected to the inner bottom wall of the T-shaped groove, movable nets are equidistantly installed on the T-shaped plate, fixed nets are equidistantly installed on both sides of the T-shaped groove, the movable net is located above the fixed net, and a snap-fit ​​fixing is arranged between the T-shaped plate and the partition.

[0014] Preferably, the clip-on fixing member includes positioning grooves symmetrically opened at the top of both ends of the T-shaped groove, and movable grooves are symmetrically opened at both ends of the T-shaped plate. A positioning rod is movably installed inside the movable groove, one end of the positioning rod is located on the outside of the T-shaped plate, and a fifth spring is installed at the other end of the positioning rod.

[0015] Preferably, the compression sealing assembly includes a U-shaped groove opened at the bottom end of the middle filter box and the bottom end of the top filter box, a U-shaped plate is installed inside the U-shaped groove, a sealing gasket is installed at the bottom end of the U-shaped plate, the position of the sealing gasket corresponds to the top wall of the bottom filter box and the top wall of the middle filter box, both ends of the middle U-shaped groove and the two ends of the T-shaped groove are provided with sliding grooves, the bottom end of the sliding groove is provided with a rod groove, a pressure plate is slidably installed inside the sliding groove, a pressure rod is installed at the bottom end of the pressure plate, the pressure rod is fixedly connected to the U-shaped plate, a sixth spring is installed at the bottom end of the pressure plate, and the bottom end of the sixth spring is fixedly connected to the inner bottom wall of the sliding groove.

[0016] Preferably, a slide plate is provided above the pressure plate, the slide plate on the middle filter box is fixedly connected to the middle-shaped plate, and the slide plate on the top filter box is fixedly connected to the T-shaped plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) During operation, the bottom filter box, the middle filter box and the top filter box are all provided with partitions, which divide them into two filter chambers. The filter chambers on both sides of the longitudinal direction are combined to form upper and lower flow channels, which facilitates the sewage flow through multiple filter chambers and the sewage treatment. At the same time, it is convenient to adjust the number of the middle filter boxes and the filtering effect.

[0019] 2) During operation, fillers are filled inside each filter cavity, and the upstream channel, downstream channel and top filter box form an N-shaped flow channel. Along the N-shaped flow channel, the diameter of the fillers inside each filter cavity decreases successively, and the gaps between the fillers decrease successively, so as to facilitate the continuous filtration of impurities of different sizes in the sewage;

[0020] 3) During operation, after the T-shaped plate is moved downward, the movable net corresponds to the fixed net, and the upstream channel and the downstream channel are connected. At the same time, the T-shaped plate enters the middle-shaped groove below, pushing each middle-shaped plate to move downward, so that each middle-shaped plate enters each middle-shaped groove and the convex-shaped groove respectively, positioning the bottom filter box, each middle filter box and the top filter box, and at the same time completely separating the filter chambers on both sides of the partition, avoiding the sewage from flowing horizontally inside the bottom filter box and the middle filter box, resulting in a decrease in the filtering effect;

[0021] 4) During operation, after the convex plate is moved downward, the cross bar is pushed outward, and the two movable plates are pulled closer to each other through the second connecting rod, so that the card block is inserted into the card slot, and by analogy, the movable plates on each middle filter box are pushed to move and inserted into the card slot of the upper middle filter box, and into the card slot on the top filter box, so that the bottom filter box, each middle filter box and the top filter box are fixed by card connection for easy installation;

[0022] 5) During operation, after the T-shaped plate and each middle-shaped plate are pushed downward, downward pressure is generated on the pressure plate, pushing the bottom wall of each sealing gasket to contact the top wall of each middle filter box and the bottom filter box respectively, and under the action of pressure, the bottom filter box and the inside of each middle filter box are sealed to prevent sewage from being discharged from the gap when filtering sewage, thereby improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] In the attached picture:

[0025] Figure 1 This is a schematic diagram of the structure of an assembled composite ecological filter bed of the present invention;

[0026] Figure 2 It is an exploded view of the bottom filter box, the middle filter box and the top filter box of the present invention;

[0027] Figure 3 It is a schematic diagram of the bottom filter box structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of the upper side box of the bottom filter box of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the pressure-driven component of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the bottom connecting component of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the movable partition assembly of the present invention;

[0032] Figure 8 It is a schematic diagram of the internal structure of the upper side box of the middle filter box of the present invention;

[0033] Fig. 9 It is a schematic diagram of the top filter box structure of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the press-actuated installation assembly of the present invention;

[0035] Fig.11 It is a schematic diagram of the internal structure of the T-shaped plate of the present invention;

[0036] Fig.12 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0037] Fig.13 It is a schematic diagram of the sewage flow direction of the present invention.

[0038] In the figure: 1, bottom filter box; 2, middle filter box; 3, top filter box; 4, clamping fixing assembly; 401, side box; 402, vertical box; 403, bottom box; 404, clamping slot; 405, movable plate; 406, first spring; 407, clamping block; 5, water inlet pipe; 6, drain pipe; 7, partition; 8, pressure-driven assembly; 801, convex groove; 802, convex plate; 803, second spring; 805, cross bar; 806, first connecting rod; 807, second connecting rod; 9, movable partition assembly; 901, middle-shaped groove; 902, middle-shaped plate; 903, third spring; 10, pressure-driven installation assembly ; 1001, fixed through net; 1002, T-shaped groove; 1003, T-shaped plate; 1004, fourth spring; 1005, movable through net; 1006, positioning groove; 1007, movable groove; 1008, positioning rod; 1009, fifth spring; 11, bottom connecting component; 1101, bottom groove; 1102, fixed cylinder; 1103, side groove; 12, compression sealing component; 1201, U-shaped groove; 1202, U-shaped plate; 1203, sealing gasket; 1204, slide groove; 1205, rod groove; 1206, pressure plate; 1207, pressure rod; 1208, sixth spring; 1209, slide plate. DETAILED DESCRIPTION

[0039] 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.

[0040] Depend on Figure 1-13 The present invention relates to an assembled composite ecological filter bed, comprising an inlet pipe 5 and a drain pipe 6, wherein a bottom filter box 1 is fixedly installed between the inlet pipe 5 and the drain pipe 6, a plurality of middle filter boxes 2 are arranged in sequence from bottom to top above the bottom filter box 1, a top filter box 3 is installed on the top of the middle filter box 2, a partition 7 is installed inside the bottom filter box 1, inside the middle filter box 2 and inside the top filter box 3, a snap-on fixing component 4 is arranged between the bottom filter box 1, the middle filter box 2 and the top filter box 3, a compression sealing component 12 is arranged at the bottom of the middle filter box 2 and the bottom of the top filter box 3, a pressure-driven component 8 is installed inside the partition 7 on the bottom filter box 1, a movable partition component 9 is installed inside the partition 7 on the middle filter box 2, a pressure-driven installation component 10 is installed inside the partition 7 on the top filter box 3, and the insides of the bottom filter box 1, the middle filter box 2 and the top filter box 3 are separated by partitions. The plate 7 is divided into two filter chambers. The pressure-driven component 8, the movable separation component 9 and the pressure-driven installation component 10 can separate the two filter chambers of each filter box and jointly lock each filter box at the same time. A bottom connecting component 11 is arranged inside the filter chamber. The bottom connecting component 11 includes a bottom groove 1101 equidistantly opened on the bottom wall of the filter chamber, a fixed cylinder 1102 is installed at the top of the bottom groove 1101, and side grooves 1103 are opened at equal angles on the outside of the fixed cylinder 1102. Each filter chamber close to the side of the water inlet pipe 5 forms an upstream filter channel, and each filter chamber close to the side of the drain pipe 6 forms a downstream filter channel. The diameter of the filler filled in the filter chamber through which the upstream filter channel and the downstream filter channel pass in turn decreases in turn, and the gap between the fillers decreases in turn. The water flows in the order of the water inlet pipe 5, the upstream filter channel, the top filter box 3, the downstream filter channel and the drain pipe 6.

[0041] The clamping fixing assembly 4 includes a side box 401 symmetrically installed on the two side surfaces of the bottom filter box 1 and the two side surfaces of the middle filter box 2, the two side boxes 401 are respectively located at the two ends of the partition 7, and two vertical boxes 402 are symmetrically installed on the top of the side box 401, and a bottom box 403 is installed at the bottom end of the side box 401 on the middle filter box 2 and the two side surfaces of the top filter box 3, and the two sides of the bottom box 403 are symmetrically provided with clamping grooves 404, and two movable plates 405 are symmetrically and movably installed inside the side box 401, and the top end of the movable plate 405 is inserted into the interior of the vertical box 402, and the sides of the movable plates 405 located inside the vertical box 402 are each installed with a clamping block 407, and the bottom end of the movable plate 405 on the middle filter box 2 is fixedly installed with an L-shaped plate body, and the L-shaped plate body is movably installed inside the bottom box 403, and a first spring 406 is installed between the two movable plates 405.

[0042] The pressure-driven component 8 includes a convex groove 801 opened inside the upper partition 7 of the bottom filter box 1, a convex plate 802 is movably installed inside the convex groove 801, a second spring 803 is symmetrically installed at the bottom end of the convex plate 802, the bottom end of the second spring 803 is fixedly connected to the bottom end of the convex groove 801 and the inner bottom wall of the convex groove 801, a pressure-actuated pusher is installed at the bottom end of the convex plate 802, and the pressure-actuated pusher includes two first connecting rods 806 symmetrically hingedly installed at the bottom end of the convex plate 802, the bottom ends of the two first connecting rods 806 are hingedly installed with cross bars 805, the ends of the two cross bars 805 are respectively inserted into the two convex grooves 801 laterally, and the cross bars 803 are fixedly connected to the bottom end of the convex groove 801. 05 Two second connecting rods 807 are symmetrically hingedly installed on the outside of one end of the convex groove 801, and the other ends of the two second connecting rods 807 are hingedly installed with two movable plates 405 respectively. After the convex plate 802 moves downward, the cross bar 805 is pushed to move outward, and the two movable plates 405 are pulled closer to each other by the second connecting rod 807, so that the block 407 is inserted into the slot 404, and so on, the movable plates 405 on each middle filter box 2 are pushed to move, inserted into the slot 404 of the upper middle filter box 2, and inserted into the slot 404 on the top filter box 3, and the bottom filter box 1, each middle filter box 2 and the top filter box 3 are fixed by clamping, which is convenient for installation.

[0043] The movable partition assembly 9 includes a center-shaped groove 901 opened inside the upper partition plate 7 of the middle filter box 2, a center-shaped plate 902 is movably installed inside the center-shaped groove 901, a third spring 903 is evenly installed on the upper bottom wall of the center-shaped plate 902, and the bottom end of the third spring 903 is fixedly connected to the inner bottom wall of the center-shaped groove 901.

[0044] The pressure-driven installation assembly 10 includes a T-shaped groove 1002 opened inside the partition 7 on the top filter box 3, a T-shaped plate 1003 is movably installed inside the T-shaped groove 1002, a fourth spring 1004 is evenly installed on the upper bottom wall of the T-shaped plate 1003, the bottom end of the fourth spring 1004 is fixedly connected to the inner bottom wall of the T-shaped groove 1002, and a movable net 1005 is equidistantly installed on the T-shaped plate 1003, and fixed nets 1001 are equidistantly installed on both sides of the T-shaped groove 1002, and the movable net 1005 is located above the fixed net 1001, and a clamping fixture is provided between the T-shaped plate 1003 and the partition 7, and the clamping fixture includes positioning grooves 1006 symmetrically opened at the top of both ends of the T-shaped groove 1002, and movable grooves 1007 are symmetrically opened at both ends of the T-shaped plate 1003. A positioning rod 1008 is movably installed inside 1007, one end of the positioning rod 1008 is located on the outside of the T-shaped plate 1003, and the other end of the positioning rod 1008 is installed with a fifth spring 1009. After the T-shaped plate 1003 moves downward, the movable through net 1005 corresponds to the fixed through net 1001, and the upstream channel and the downstream channel are connected. At the same time, the T-shaped plate 1003 moves downward into the lower middle-shaped groove 901, pushing each middle-shaped plate 902 to move downward, so that each middle-shaped plate 902 enters each middle-shaped groove 901 and the convex-shaped groove 801 respectively, and the bottom filter box 1, each middle filter box 2 and the top filter box 3 are positioned while the filter chambers on both sides of the partition 7 are completely separated to prevent sewage from lateral circulation inside the bottom filter box 1 and the middle filter box 2, resulting in a decrease in the filtering effect.

[0045] The compression seal assembly 12 includes a square groove 1201 opened at the bottom end of the middle filter box 2 and the bottom end of the top filter box 3, a square plate 1202 is installed inside the square groove 1201, and a sealing gasket 1203 is installed at the bottom end of the square plate 1202. The position of the sealing gasket 1203 corresponds to the top wall of the bottom filter box 1 and the top wall of the middle filter box 2. Both ends of the middle square groove 901 and both ends of the T-shaped groove 1002 are provided with a slide groove 1204, and the bottom end of the slide groove 1204 is provided with a rod groove 1205. A pressure plate 1206 is slidably installed inside the slide groove 1204, and a pressure rod 1207 is installed at the bottom end of the pressure plate 1206. The pressure rod 1207 is fixedly connected to the square plate 1202, and the bottom end of the pressure plate 1206 is installed There is a sixth spring 1208, the bottom end of the sixth spring 1208 is fixedly connected to the inner bottom wall of the slide 1204, and a slide plate 1209 is arranged above the pressure plate 1206. The slide plate 1209 on the middle filter box 2 is fixedly connected to the middle-shaped plate 902, and the slide plate 1209 on the top filter box 3 is fixedly connected to the T-shaped plate 1003. After the T-shaped plate 1003 and each middle-shaped plate 902 are pushed downward, a downward pressure is generated on the pressure plate 1206, pushing the bottom wall of each sealing gasket 1203 to contact the top wall of each middle filter box 2 and the bottom filter box 1 respectively, and under the action of pressure, the bottom filter box 1 and each middle filter box 2 are sealed to avoid sewage being discharged from the gap when filtering sewage, thereby improving the filtering effect.

[0046] Working principle: When working, the number of middle filter boxes 2 required is selected according to the accuracy of sewage treatment, and the bottom filter box 1, multiple middle filter boxes 2 and top filter box 3 are stacked from bottom to top. Since the bottom filter box 1, the middle filter box 2 and the top filter box 3 are divided into two filter chambers by the partition 7 inside them, and the filter chamber of the middle filter box 2 and the filter chamber of the top filter box 3 are provided with a bottom groove 1101 and a fixed cylinder 1102 at the bottom, each filter chamber close to the water inlet pipe 5 forms an upstream channel from bottom to top, and each filter chamber close to the drain pipe 6 forms a downstream channel from top to bottom;

[0047] At the same time, after the bottom filter box 1, the middle filter box 2, and the top filter box 3 are stacked layer by layer, the two vertical boxes 402 at the top of the upper side box 401 of the bottom filter box 1 are respectively inserted into the two sides of the bottom box 403 of the upper side box 401 of the lowest middle filter box 2, and the two vertical boxes 402 at the top of the upper side box 401 of the middle filter box 2 are inserted into the two sides of the bottom box 403 of the upper side box 401 of the upper middle filter box 2, and the two vertical boxes 402 at the top of the upper side box 401 of the highest middle filter box 2 are respectively inserted into the two sides of the upper bottom box 403 of the top filter box 3;

[0048] After the installation is completed, push the T-shaped plate 1003 downward until the movable through net 1005 on the T-shaped plate 1003 corresponds to the fixed through net 1001, and the positioning rod 1008 is engaged with the positioning groove 1006, so that the T-shaped plate 1003 is engaged and fixed. After the T-shaped plate 1003 moves downward, its bottom end is inserted into the middle-shaped groove 901 on the uppermost middle filter box 2, and the middle-shaped plate 902 is pushed downward to move into the middle-shaped groove 901 on the lower middle filter box 2, and so on, so that the middle-shaped plate 902 is inserted into the middle-shaped groove 901 in the lower middle filter box 2, and the middle-shaped plate 902 in the lower middle filter box 2 moves downward and is inserted into the convex-shaped groove 801, so that the middle parts between the adjacent bottom filter box 1, middle filter box 2 and top filter box 3 are completely separated, so as to prevent the sewage entering the bottom filter box 1 and the middle filter box 2 from directly flowing horizontally, resulting in reduced filtering effect;

[0049] When the convex plate 802 is pushed to move downward, the cross bar 805 is pushed outward by the first connecting rod 806, and then the two movable plates 405 on the bottom filter box 1 are pushed closer to each other by the second connecting rod 807, so that the block 407 is inserted into the slot 404 on the middle filter box 2, and at the same time, the two movable plates 405 inside the side box 401 on the bottom middle filter box 2 are pushed closer to each other, and so on, so that the adjacent bottom filter box 1, middle filter box 2 and top filter box 3 are fixed to each other, and the installation and fixation of the equipment is completed;

[0050] When the T-shaped plate 1003 and the plurality of middle-shaped plates 902 move downward, the positioning groove 1006 moves downward, generating downward pressure on the pressure plate 1206, so that the sealing gasket 1203 moves downward and is tightly pressed against the top wall of the bottom filter box 1 and the top walls of each middle filter box 2, thereby forming a seal between the bottom filter box 1 and each middle filter box 2 to prevent sewage from escaping during the circulation process;

[0051] Before installation, each filter cavity is filled with fillers, and the upstream channel, downstream channel and top filter box 3 form an N-shaped flow channel. Along the N-shaped flow channel, the diameter of the fillers inside each filter cavity decreases successively, and the gaps between the fillers decrease successively, so as to facilitate the continuous filtering of impurities of different sizes in the sewage.

[0052] 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.

[0053] 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. An assembled composite ecological filter bed, comprising a water inlet pipe (5) and a drain pipe (6), characterized in that: A bottom filter box (1) is fixedly installed between the water inlet pipe (5) and the drain pipe (6); a plurality of middle filter boxes (2) are arranged in sequence from bottom to top above the bottom filter box (1); a top filter box (3) is installed on the top of the top middle filter box (2); a partition (7) is installed inside the bottom filter box (1), inside the middle filter box (2) and inside the top filter box (3); a clamping fixing assembly (4) is arranged between the bottom filter box (1), the middle filter box (2) and the top filter box (3); a compression sealing assembly (12) is arranged at the bottom of the middle filter box (2) and the bottom of the top filter box (3); the inside of the bottom filter box (1), the middle filter box (2) and the top filter box (3) is divided into two filter chambers by the partition (7); A pressure-driven component (8) is installed inside the partition plate (7) on the bottom filter box (1), a movable partition component (9) is installed inside the partition plate (7) on the middle filter box (2), and a pressure-driven mounting component (10) is installed inside the partition plate (7) on the top filter box (3). The pressure-driven component (8), the movable partition component (9) and the pressure-driven mounting component (10) can separate the two filter chambers of each filter box and simultaneously jointly lock each filter box. A bottom connecting component (11) is arranged inside the filter cavity. The bottom connecting component (111) comprises bottom grooves (1101) equidistantly arranged on the bottom wall of the filter cavity. A fixing cylinder (1102) is installed at the top of the bottom groove (1101). Side grooves (1103) are arranged at equal angles on the outside of the fixing cylinder (1102). Each filter cavity close to the side of the water inlet pipe (5) forms an upstream filtering channel. Each filter cavity close to the side of the drain pipe (6) forms a downstream filtering channel. The diameter of the filler filled in the filter cavity through which the upstream filtering channel and the downstream filtering channel pass in sequence decreases in sequence. The gaps between the fillers decrease in sequence. The water flows in the order of the water inlet pipe (5), the upstream filtering channel, the top filter box (3), the downstream filtering channel and the drain pipe (6).

2. The assembled composite ecological filter bed according to claim 1, characterized in that: The clamping and fixing assembly (4) comprises side boxes (401) symmetrically mounted on two side surfaces of the bottom filter box (1) and two side surfaces of the middle filter box (2), the two side boxes (401) being located at two ends of the partition (7), two vertical boxes (402) being symmetrically mounted on the top of the side boxes (401), bottom boxes (403) being mounted on the bottom end of the side boxes (401) on the middle filter box (2) and two side surfaces of the top filter box (3), and clamping slots (404) being symmetrically provided on both sides of the bottom box (403).

3. The assembled composite ecological filter bed according to claim 2 is characterized in that: Two movable plates (405) are symmetrically and movably installed inside the side box (401), the top ends of the movable plates (405) are inserted into the interior of the vertical box (402), and the movable plates (405) located inside the vertical box (402) are both installed with clamping blocks (407) on the sides close to each other. The bottom ends of the movable plates (405) on the middle filter box (2) are fixedly installed with an L-shaped plate body, and the L-shaped plate body is movably installed inside the bottom box (403), and a first spring (406) is installed between the two movable plates (405).

4. The assembled composite ecological filter bed according to claim 1, characterized in that: The pressure-driven assembly (8) comprises a convex groove (801) provided inside the upper partition plate (7) of the bottom filter box (1); a convex plate (802) is movably mounted inside the convex groove (801); a second spring (803) is symmetrically mounted at the bottom end of the convex plate (802); the bottom end of the second spring (803) is fixedly connected to the bottom end of the convex groove (801) and the inner bottom wall of the convex groove (801); and a pressure-actuated pusher is mounted at the bottom end of the convex plate (802).

5. The assembled composite ecological filter bed according to claim 4 is characterized in that: The pressure pusher comprises two first connecting rods (806) symmetrically hingedly mounted on the bottom end of the convex plate (802), the bottom ends of the two first connecting rods (806) are hingedly mounted with a cross rod (805), the ends of the two cross rods (805) are respectively inserted transversely into the two convex grooves (801), and two second connecting rods (807) are symmetrically hingedly mounted on the outer side of one end of the cross rod (805) located inside the convex groove (801), and the other ends of the two second connecting rods (807) are respectively hingedly mounted on the two movable plates (405).

6. The assembled composite ecological filter bed according to claim 1, characterized in that: The movable partition assembly (9) comprises a Chinese-character groove (901) opened inside the upper partition plate (7) of the middle filter box (2), a Chinese-character plate (902) being movably mounted inside the Chinese-character groove (901), a third spring (903) being evenly mounted on the upper bottom wall of the Chinese-character plate (902), and a bottom end of the third spring (903) being fixedly connected to the inner bottom wall of the Chinese-character groove (901).

7. The assembled composite ecological filter bed according to claim 1 is characterized in that: The pressure-activated mounting assembly (10) comprises a T-shaped groove (1002) opened inside the upper partition (7) of the top filter box (3); a T-shaped plate (1003) is movably mounted inside the T-shaped groove (1002); fourth springs (1004) are evenly mounted on the upper bottom wall of the T-shaped plate (1003); the bottom end of the fourth spring (1004) is fixedly connected to the inner bottom wall of the T-shaped groove (1002); movable nets (1005) are equidistantly mounted on the T-shaped plate (1003); fixed nets (1001) are equidistantly mounted on both sides of the T-shaped groove (1002); the movable nets (1005) are located above the fixed nets (1001); and a clamping fixture is provided between the T-shaped plate (1003) and the partition (7).

8. The assembled composite ecological filter bed according to claim 7, characterized in that: The clamping fixing member comprises positioning grooves (1006) symmetrically arranged at the tops of both ends of the T-shaped groove (1002), movable grooves (1007) are symmetrically arranged at both ends of the T-shaped plate (1003), a positioning rod (1008) is movably installed inside the movable groove (1007), one end of the positioning rod (1008) is located outside the T-shaped plate (1003), and the other end of the positioning rod (1008) is installed with a fifth spring (1009).

9. The assembled composite ecological filter bed according to claim 1, characterized in that: The compression seal assembly (12) comprises a U-shaped groove (1201) opened at the bottom end of the middle filter box (2) and the bottom end of the top filter box (3); a U-shaped plate (1202) is installed inside the U-shaped groove (1201); a sealing gasket (1203) is installed at the bottom end of the U-shaped plate (1202); the position of the sealing gasket (1203) corresponds to the top wall of the bottom filter box (1) and the top wall of the middle filter box (2); the two ends of the middle U-shaped groove (901) and the T-shaped groove (1002) are connected to the sealing gasket (1203); Both ends are provided with a slide groove (1204), the bottom end of the slide groove (1204) is provided with a rod groove (1205), a pressure plate (1206) is slidably installed inside the slide groove (1204), a pressure rod (1207) is installed at the bottom end of the pressure plate (1206), the pressure rod (1207) is fixedly connected to the square plate (1202), a sixth spring (1208) is installed at the bottom end of the pressure plate (1206), and the bottom end of the sixth spring (1208) is fixedly connected to the inner bottom wall of the slide groove (1204).

10. The assembled composite ecological filter bed according to claim 9, characterized in that: A slide plate (1209) is provided above the pressure plate (1206); the slide plate (1209) on the middle filter box (2) is fixedly connected to the middle-shaped plate (902); and the slide plate (1209) on the top filter box (3) is fixedly connected to the T-shaped plate (1003).

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