Filter unit and assembled filter dam

Abstract

The utility model discloses a filter unit, which is characterized in that a filter unit body is of a placement type and is sequentially provided with a connecting layer and a filter layer from outside to inside; the connecting layer comprises a groove part and a protruding part matched with the groove part in shape, the number of the filtering units is multiple, every two adjacent filtering units can be detachably connected through matching of the groove part and the protruding part, and the multiple filtering units are combined to form a filtering dam. The utility model further discloses an assembly type filter dam, the assembly type filter dam is composed of a plurality of filter units, and the filter units and the assembly type filter dam are detachably installed and can effectively relieve filter dam blockage caused when aquaculture tail water is treated, the filter efficiency is improved, and the filter effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to a filter unit and an assembled filter dam. Background Art

[0002] During the aquaculture process, fish, shrimp and other farmed animals will produce a large amount of excrement. Workers need to change the water from time to time to prevent impurities in the water from affecting the health of fish and shrimp. The aquaculture tail water contains a large amount of pollutants, and direct discharge can easily pollute the surrounding environment.

[0003] At present, the commonly used aquaculture tailwater treatment solutions include the "three pools and two dams" technology, where the "dam" refers to the "filtration dam", which is mainly responsible for filtering impurities in the water and slowing down the water flow. However, when constructing existing filter dams, reinforced concrete is usually poured on site. This method is difficult to construct, takes a long time, and cannot be disassembled. Therefore, it cannot be flexibly used for filtering aquaculture tailwater, which may affect the filtering efficiency of aquaculture tailwater.

[0004] Therefore, in order to solve the problem that the filter dam cannot be disassembled, the present application proposes a new type of filter unit and assembled filter dam. Utility Model Content

[0005] In order to improve the problem that the existing filter dam cannot be disassembled, the present application proposes a filter unit and an assembled filter dam, which have a detachable structure and are easy to construct, thereby increasing the filtration efficiency and the filtration effect, and can effectively alleviate the blockage of the filter dam caused by the treatment of aquaculture tail water, thereby increasing the service life of the filter dam.

[0006] The first object of the present application is to provide a filter unit, which adopts the following technical solution:

[0007] A filter unit comprises a filter unit body, which is placed in a placement type and is provided with a connection layer and a filter layer in sequence from the outside to the inside; the connection layer comprises a groove portion and a protrusion portion matching the shape of the groove portion, there are multiple filter units, and two adjacent filter units can be detachably connected through the cooperation of the groove portion and the protrusion portion, and multiple filter units are combined to form a filter dam.

[0008] By adopting the above technical solution, a connecting layer structure is provided on the filter unit body to facilitate the installation and disassembly of multiple filter units, thereby realizing the detachable connection of the filter units, facilitating construction and ready-to-use, thus shortening the construction period and facilitating the disassembly and movement of the filter units.

[0009] Preferably, the groove portion on each filter unit includes a first groove and a second groove, and the protrusion portion on each filter unit includes a first protrusion and a second protrusion, the first protrusion matches the shape of the first groove, and the second protrusion matches the shape of the second groove.

[0010] By adopting the above technical solution, grooves and protrusions of different shapes are respectively arranged on the connecting layer outside the filter unit, and the grooves and protrusions of matching shapes can be detachably connected, making the structure of the entire filter device more stable and reliable, and also convenient for maintenance and updating.

[0011] Preferably, the filter layer comprises a water inlet module, a filler purification module and a drainage module, and the water inlet module, the filler purification module and the drainage module are arranged in sequence from outside to inside.

[0012] By adopting the above technical solution, the modules of the filter layer are arranged in a circular manner, and filtering is performed layer by layer from the outside to the inside, thereby improving the efficiency and effect of sewage filtration.

[0013] Preferably, the water inlet module includes an impurity collection area and a water collection area. The top of the water collection area is covered with a supporting steel frame and a filter net for filtering suspended matter in the water. The supporting steel frame is installed obliquely on the water collection area to form a slope. The filter net covers and is fixed on the surface of the supporting steel frame. The impurity collection area includes a collection chamber for collecting suspended matter that slides off the filter net.

[0014] By adopting the above technical solution, a supporting steel frame and a filter net are set on the top of the water collection area to perform a filtration before the tail water enters the water inlet module, and the suspended matter is filtered on the filter net to prevent it from entering the filler purification module and causing clogging of the filler, thereby alleviating the clogging of the filler purification module and improving the water flow efficiency.

[0015] Preferably, the filler purification module comprises a first filler area and a second filler area, the tail water flows through the first filler area and the second filler area in sequence, and the filler particle size of the first filler area is larger than that of the second filler area.

[0016] By adopting the above technical solution, different filler particle sizes are used to achieve layer-by-layer filtration of tail water. Graded filtration can alleviate the clogging of the filler and improve the filtration effect.

[0017] Preferably, the first filling area and the second filling area are both provided with a single-type filling box for placing filling materials, and the single-type filling box is detachably placed in the filter unit.

[0018] By adopting the above technical solution, the filler is placed in a single-type filler box, and the single-type filler box can be disassembled from the filter unit, which is convenient for cleaning and maintenance of the filter unit, and also makes the replacement of the filler faster, thereby improving the work efficiency of the breeding staff.

[0019] Preferably, the drainage module comprises a water storage area and a drainage pipe, the water inlet of the drainage pipe is located at the bottom end of the water storage area and communicates with the water storage area, and a water outlet is provided at one end of the drainage pipe away from the water inlet.

[0020] Preferably, the filter layer further comprises a pre-processing module, the pre-processing module comprises a grille, and the grille is fixedly installed between the first groove and the water inlet module.

[0021] By adopting the above technical solution, before the tail water passes through the filter net and enters the catchment area, the grille net is used for the first coarse filtration to filter out larger impurities in the tail water, which effectively alleviates the blockage of the filter dam and improves the water flow efficiency.

[0022] Preferably, the impurity collection area, the water collection area, the first filler area, the second filler area, the water storage area and the drain pipe are arranged in sequence from the outside to the inside of the filter unit;

[0023] The water collection area is communicated with the bottom of the first filling area, the second filling area is communicated with the bottom of the water storage area, and the height of the top of the second filling area is lower than the height of the top of the first filling area.

[0024] By adopting the above technical scheme, optimizing the design of the filter layer, and adopting an outside-to-inside layout and reasonable area division, the filtering effect is effectively improved, the problem of clogging of the filter unit is alleviated, and orderly filtration of tail water is achieved; and the bottoms of some functional areas are connected, so that the tail water can pass through the filler area in the desired direction, allowing the tail water to fully contact the filler, avoiding waste of filler, and achieving effective filtration of the tail water.

[0025] The second object of the present application is to provide an assembled filter dam, which adopts the following technical solution:

[0026] An assembled filter dam comprises a plurality of the above-mentioned filter units, wherein the filter units are divided into a first filter unit and a second filter unit, wherein the first filter unit and the second filter unit are adjacent to each other and are detachably connected;

[0027] The top height of the first filter unit is higher than the top height of the second filter unit, and the water outlet of the first filter unit is communicated with the water inlet module of the second filter unit.

[0028] By adopting the above technical solution, multiple filter units can be connected in series to achieve multiple filtration of tail water. The tail water filtered by the previous filter unit is passed into another filter unit to achieve multiple filtration and improve the filtering effect.

[0029] In summary, this application has at least the following beneficial effects:

[0030] 1. The filter unit of the present application does not require on-site pouring of concrete foundations and can be used immediately after being placed, which shortens the construction period and also facilitates the disassembly and movement of the filter dam composed of it; and the filter dam of the present application is composed of multiple filter units, which can be flexibly combined and expanded according to actual needs. Connecting the filter units in parallel on the left and right can enhance the water flow efficiency and water flow rate; connecting the filter units in series front and back can enhance the purification and filtration effect of the filter dam, which has high practicality and applicability.

[0031] 2. The filter unit of the present application treats the tail water before filtration by setting a grid net and a filter net. The grid net can filter out larger impurities in the tail water, which is beneficial to reducing impurities in the tail water. Combined with the filter net to filter smaller suspended matter in the tail water, it can alleviate the clogging of the filler and the filter unit, and improve the water flow efficiency and service life of the filter unit or filter dam.

[0032] 3. This application places the filler in a single-type filler box, which makes it convenient for farmers to disassemble and replace the filler, improves work efficiency, and also facilitates cleaning of the filter monomer or filter dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional diagram of the filter unit of Example 1 of the present application;

[0034] Figure 2 It is a top view of the filter unit of Example 1 of the present application.

[0035] Figure 3 is a cross-sectional view of the filter unit and the tail water flow direction of Example 1 of the present application;

[0036] Figure 4 is a top view of the connection of multiple filter units in Example 2 of the present application;

[0037] Figure 5 yes Figure 4 Cross-section along the AA direction.

[0038] Description of reference numerals:

[0039] 1. Filter unit body; 2. Groove portion; 21. First groove; 22. Second groove; 3. Protrusion portion; 31. First protrusion; 32. Second protrusion; 4. Grid mesh; 5. Impurity collection area; 6. Water collection area; 7. Support steel frame; 8. First filling area; 9. Second filling area; 10. Single filling box; 11. Water storage area; 12. Drain pipe; 121. Water inlet; 122. Water outlet. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 Further elaboration of this application:

[0041] Embodiment 1:

[0042] This embodiment discloses a filter unit, the structure of which is as follows Figure 1 As shown, it includes a filter unit body 1. In this embodiment, the length, width and height of the filter unit body 1 are 150cm×150cm×200cm. The filter unit body 1 is placed and cast on the ground off-site.

[0043] The filter unit body 1 is provided with a connection layer and a filter layer in sequence from the outside to the inside. The connection layer is cast by concrete in a mold, and the connection layer includes a groove portion 2 and a protrusion portion 3 matching the shape of the groove portion 2. There are multiple filter units, and two adjacent filter units can be detachably connected through the cooperation of the groove portion 2 and the protrusion portion 3. Multiple filter units are combined to form a filter dam.

[0044] Combination Figure 2 As shown, in this embodiment, in a filter unit body 1, the groove portion 2 includes a first groove 21 and a second groove 22, the protrusion portion 3 includes a first protrusion 31 and a second protrusion 32, the first protrusion 31 matches the shape of the first groove 21, and the second protrusion 32 matches the shape of the second groove 22.

[0045] like Figure 2 As shown, the filter unit as a whole is a square cylinder, and the side where the first groove 21 is located is identified as the front of the filter unit body 1, wherein the top-view cross-section of the first groove 21 is an isosceles trapezoid, and the first groove 21 is a column that penetrates the filter unit body 1, and the first protrusion 31 opposite to the first groove 21 is a protruding column with an isosceles trapezoidal top-view cross-section, but the height of the isosceles trapezoidal top-view cross-section of the front first groove 21 is twice the height of the isosceles trapezoidal top-view cross-section of the rear first protrusion 31, so there will be a gap when the two are connected.

[0046] The side where the second groove 22 of the filter unit body 1 is located is identified as the left side. The top-view cross-sectional shape of the second groove 22 and the second protrusion 32 in the filter unit body 1 as the left and right connecting devices is also an isosceles trapezoid. The two are consistent in shape and size and serve as connecting devices for the two filter unit bodies 1 connected in parallel on the left and right.

[0047] Reference Figure 3 The filter layer includes a pre-treatment module, a water inlet module, a filler purification module and a drainage module. In this embodiment, the pre-treatment module includes a grille 4, which is located between the first groove 21 and the water inlet module. In this embodiment, the grille 4 is square and supported by steel bars. The height of the grille 4 is 10 cm, and its width is the same as the trapezoidal bottom of the top view of the first groove 21. The grille 4 is fixedly embedded on the concrete platform between the water inlet module and the first groove 21, and the water inlet area at the grille is the inlet of the tail water entering the filter unit body 1.

[0048] In this embodiment, the water inlet module, the filler purification module and the drainage module are arranged in sequence from the outside to the inside in a concentric circle manner to ensure that the tail water can pass through each module in sequence for effective filtration treatment.

[0049] The water inlet module includes an impurity collection area 5 and a water collection area 6. The water collection area 6 is the first functional area where tail water enters the filter layer. The impurity collection area 5 is used to collect impurities filtered when the tail water enters the water collection area 6.

[0050] Existing filter dams are often easily clogged due to excessive impurities in the aquaculture tail water, which in turn affects the water flow efficiency and service life of the filter dam. Therefore, in order to further optimize the filtering effect, in the water inlet module of this embodiment, a circular support steel frame 7 is provided on the top of the water collection area 6, such as Figure 2 and Figure 3 As shown, it is welded by several circular steel rings and steel bars with a diameter of 2 cm, the spacing between adjacent circular steel rings is 2-3 cm, and 8 steel bars are used to weld all the steel rings into a whole and form a certain slope, the slope range is 30°-60°; a filter screen is covered on the supporting steel frame 7, and the filter screen is fixed to the supporting steel frame 7 by steel wire. In this embodiment, the filter screen is woven from nylon yarn.

[0051] When the tail water passes through the grid net 4 and enters from the top of the water collection area 6 , the suspended matter in the tail water is blocked on the surface of the nylon yarn, and finally falls from the sloped nylon yarn and falls into the collection cavity of the impurity collection area 5 .

[0052] like Figure 2As shown, in this embodiment, the functional areas of the water inlet module, the filler purification module and the drainage module are arranged in sequence from the outside to the inside in a concentric circle manner, and a circular concrete retaining wall with a thickness of 2 cm is provided between adjacent functional areas to ensure the independence of each area.

[0053] like Figure 3 As shown, the outermost circular concrete retaining wall adjacent to the impurity collection area 5 has a diameter of 110 cm and a height of 150 cm; the inner circular concrete retaining wall has a diameter of 102 cm and a height of 145 cm, and a certain number of emergent plants, such as reeds, are planted inside the impurity collection area 5, which can effectively absorb and decompose impurities falling into it.

[0054] The outer circular concrete retaining wall adjacent to the water collection area 6 has a diameter of 100 cm and a height of 145 cm; the inner circular concrete retaining wall has a diameter of 91 cm and a height of 150 cm. The inner concrete retaining wall of the water collection area 6 is provided with a plurality of holes with a diameter of 1-2 cm at a position 40 cm and below from the bottom of the dam, and the water collection area 6 is connected to the bottom of the first filling area 8 through the holes.

[0055] The filler purification module of this embodiment includes two functional areas, namely a first filler area 8 and a second filler area 9. The filler of the first filler area 8 is gravel, and the filler of the second filler area 9 is zeolite. The particle size of the gravel is larger than that of the zeolite.

[0056] The outer circular concrete retaining wall of the first filling area 8, i.e. the gravel filling area, has a diameter of 89 cm, and the inner circular concrete retaining wall has a diameter of 81 cm and a height of 145 cm. The outer circular concrete retaining wall of the second filling area 9, i.e. the zeolite filling area, has a diameter of 79 cm, a diameter of 71 cm, and a height of 140 cm.

[0057] The first filling area 8 and the second filling area 9 are also provided with a single-type filling box 10 for placing fillers. The single-type filling box 10 is a hollow cylinder with steel bars as the skeleton and wrapped with wire mesh. The top of the single-type filling box 10 is open, and the single-type filling box 10 is respectively embedded in the inner layer of the first filling area 8 and the second filling area 9 and can be taken out.

[0058] In this embodiment, there are two types of single-type filling boxes 10, namely, a gravel filling box for placing gravel and a zeolite filling box for placing zeolite. The single-type gravel filling box has the following specifications: an outer diameter of 88 cm, an inner diameter of 82 cm, and a height of 145 cm; the single-type zeolite filling box has the following specifications: an outer circular steel frame diameter of 78 cm, an inner circular steel frame diameter of 72 cm, and a height of 140 cm. The second filling area 9, i.e., the inner circular concrete retaining wall of the zeolite filling area, is provided with a plurality of holes with a diameter of 1-2 cm at a position 40 cm or less from the dam bottom, and the second filling area 9 is connected to the bottom of the water storage area 11 through the holes.

[0059] like Figure 3 As shown, the drainage module of this embodiment includes two functional areas: a water storage area 11 and a drainage pipe 12. The diameter of the circular concrete retaining wall outside the water storage area 11 is 69 cm, and a drainage pipe 12 with a diameter of 30 cm is provided at the bottom. The drainage pipe 12 is made of PVC material.

[0060] like Figure 3 As shown, the water inlet 121 of the drainage pipe 12 is located at the bottom of the water storage area 11 and communicates with the water storage area 11, and the height of the top of the water outlet 122 of the drainage pipe 12 is lower than the height of the retaining wall adjacent to the water storage area 11, that is, lower than the height of the circular concrete retaining wall outside the water storage area 11. Steel filter screens are provided at the water inlet 121 and the water outlet 122 to prevent impurities from entering the drainage pipe and causing blockage.

[0061] In this embodiment, the treatment process of aquaculture tail water is as follows: Figure 3 The arrow in the figure indicates the flow direction of tail water. The tail water first passes through the grid mesh 4, and the grid mesh 4 filters out larger impurities. The tail water passing through the grid mesh 4 passes through the supporting steel frame 7 and nylon yarn on the water collection area 6. The smaller suspended matter in the tail water is retained on the surface of the nylon yarn. Since the nylon yarn is covered on the supporting steel frame 7 and has a certain slope, the suspended matter can be collected into the impurity collection area 5 with the help of its own gravity and the thrust of the water flow.

[0062] Then the tail water enters the gravel filling area from the hole at the bottom of the concrete retaining wall inside the water collection area 6. The height of the top of the gravel filling area is higher than the height of the top of the zeolite filling area. The tail water passes through the gravel filling area from bottom to top and overflows from its top to the zeolite filling area. Then, it passes through the zeolite filling area from the hole at the bottom of the inner concrete retaining wall into the water storage area 11, and then is discharged from the drain pipe 12 at the bottom of the water storage area 11, completing a cycle of filtration.

[0063] Embodiment 2:

[0064] This embodiment discloses an assembled filter dam, including a plurality of embodiments 1. In this embodiment, the filter unit in the filter dam is divided into a first filter unit and a second filter unit. The first filter unit and the second filter unit are adjacent to each other and are detachably connected.

[0065] During assembly, there are two different assembly modes according to the connection layer structure of the filter unit body 1, namely, front-to-back series connection and left-to-right parallel connection.

[0066] When connected in series, the first filter unit is in front and the second filter unit is in the back. The top height of the first filter unit is higher than the top height of the second filter unit, and the water outlet 122 of the first filter unit is connected to the water inlet module of the second filter unit.

[0067] There can be multiple first filter units, and there can also be multiple second filter units, and the number of second filter units corresponds to the number of first filter units. Each first filter unit is adapted to the adjacent first filter unit, and each second filter unit is adapted to the adjacent second filter unit.

[0068] For ease of understanding, the following is a description of a specific example. Figure 4 It is shown that four filter units are connected in series and in parallel at the same time, namely, two first filter units and two second filter units.

[0069] The front and rear parts are connected in series, the first groove 21 of the front first filter unit and the first protrusion 31 of the rear second filter unit are detachably connected, and the first groove 21 and the first protrusion 31 are clearance-matched;

[0070] The left and right parallel parts are that the second groove 22 of the left filter unit and the second protrusion 32 of the right filter unit are detachably connected, and the inner wall of the second groove 22 and the outer surface of the second protrusion 32 are tightly connected, which can increase the water flow rate and enhance the water flow efficiency.

[0071] The horizontal heights of the filter units connected in parallel on the left and right sides are consistent, but the heights of the filter units connected in series on the front and back sides are inconsistent. Figure 5 It is a cross-sectional view of the series part, in which the bottom height of the outlet 122 of the drainage pipe 12 of the front filter unit is higher than the inlet height of the rear filter unit, and the inlet is located at the grille 4; when the tail water filtered by the front filter unit comes out from the outlet 122 and then enters the rear filter unit body 1 from the inlet of the rear filter unit, the purification and filtering effect of the filter dam can be enhanced.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application. For example, different materials or features can be selected according to actual needs to replace part or all of the technical features in the above embodiments; the technical features in the above embodiments can also be combined or split to form a new technical solution. In short, any simple modification, equivalent replacement or improvement of the technical solution of the present application should be included in the protection scope of the present application.

Claims

1. A filter unit, comprising a filter unit body (1), characterized in that: The filter unit body (1) is of a placement type, and is provided with a connection layer and a filter layer in sequence from the outside to the inside; the connection layer comprises a groove portion (2) and a protrusion portion (3) matching the shape of the groove portion (2); there are a plurality of filter units, and two adjacent filter units can be detachably connected through the cooperation of the groove portion (2) and the protrusion portion (3); and a plurality of the filter units are combined to form a filter dam.

2. A filter unit according to claim 1, characterized in that: The groove portion (2) on each filter unit comprises a first groove (21) and a second groove (22), and the protrusion portion (3) on each filter unit comprises a first protrusion (31) and a second protrusion (32), wherein the first protrusion (31) matches the shape of the first groove (21), and the second protrusion (32) matches the shape of the second groove (22).

3. A filter unit according to claim 1, characterized in that: The filter layer includes a water inlet module, a filler purification module and a drainage module, and the water inlet module, the filler purification module and the drainage module are arranged in sequence from outside to inside.

4. A filter unit according to claim 3, characterized in that: The water inlet module comprises an impurity collection area (5) and a water collection area (6); the top of the water collection area (6) is covered with a supporting steel frame (7) and a filter screen for filtering suspended matter in the water; the supporting steel frame (7) is obliquely installed on the water collection area (6) to form a slope; the filter screen covers and is fixed on the surface of the supporting steel frame (7); the impurity collection area (5) comprises a collection chamber for collecting suspended matter that slides off the filter screen.

5. A filter unit according to claim 4, characterized in that: The filler purification module comprises a first filler area (8) and a second filler area (9), the tail water flows through the first filler area (8) and the second filler area (9) in sequence, and the filler particle size of the first filler area (8) is larger than the filler particle size of the second filler area (9).

6. A filter unit according to claim 5, characterized in that: The first filling area (8) and the second filling area (9) are both provided with a single-type filling box (10) for placing filling materials, and the single-type filling box (10) is detachably placed in the filter unit.

7. A filter unit according to claim 5, characterized in that: The drainage module comprises a water storage area (11) and a drainage pipe (12); a water inlet (121) of the drainage pipe (12) is located at the bottom end of the water storage area (11) and communicates with the water storage area (11); and a water outlet (122) is provided at one end of the drainage pipe (12) away from the water inlet (121).

8. A filter unit according to claim 3, characterized in that: The filter layer further comprises a pre-treatment module, the pre-treatment module comprising a grille net (4), the grille net (4) being fixedly mounted between the first groove (21) and the water inlet module.

9. A filter unit according to claim 7, characterized in that: The impurity collection area (5), the water collection area (6), the first filler area (8), the second filler area (9), the water storage area (11) and the drainage pipe (12) are arranged in sequence from the outside to the inside of the filter unit; The water collection area (6) is in communication with the bottom of the first filling area (8), the second filling area (9) is in communication with the bottom of the water storage area (11), and the height of the top of the second filling area (9) is lower than the height of the top of the first filling area (8).

10. An assembled filter dam, characterized in that: The filter unit comprises a plurality of filter units according to any one of claims 1 to 9, wherein the filter unit is divided into a first filter unit and a second filter unit, and the first filter unit and the second filter unit are adjacent to each other and are detachably connected; The top height of the first filter unit is higher than the top height of the second filter unit, and the water outlet (122) of the first filter unit is in communication with the water inlet module of the second filter unit.

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