A charcoal filter mechanism with nitrogen and phosphorus adsorption effect

Abstract

The utility model belongs to water body filter core design technical field, especially a kind of biological charcoal filter core mechanism with nitrogen and phosphorus adsorption effect, it is connected between mounting plate and bottom plate by several connecting columns, first filter screen and second filter screen are set between adjacent connecting columns and jointly constitute containing cavity, biological charcoal granular filter material is loaded in containing cavity, through slot is set in the top of each containing cavity on mounting plate, sliding block is embedded in each through slot, connecting plate is equipped on the top of mounting plate, sliding block is fixedly connected on the top of connecting plate, limit rod is further fixed on the top of connecting plate, spring is equipped between limit rod and connecting plate, spring is in axial compression state and further by connecting plate and sliding block, biological charcoal granular filter material in each containing cavity is pressed down tightly.

Description

Technical Field

[0001] This utility model belongs to the field of water filtration cartridge design technology, and specifically relates to a biochar cartridge mechanism with nitrogen and phosphorus adsorption effect. Background Technology

[0002] Biochar materials have advantages such as low cost and good regeneration performance, and are widely used in the treatment of eutrophication in water bodies. In particular, biochar materials that have undergone functional modification can effectively exert physical adsorption, coordination adsorption and charge adsorption at the same time, thus achieving ideal removal effects on most organic pollutants and microbial pollutants in water bodies, such as ammonia nitrogen and phosphate.

[0003] Biochar granules are used as filter media to fill the filter cartridge. After the filter cartridge is used for water purification for a period of time, it is disassembled and the biochar granules are poured out for regeneration. After regeneration, they are put back into the filter cartridge for continued water treatment, thus realizing the recycling of biochar granules and effectively saving filter media costs.

[0004] However, after a period of adsorption and regeneration cycles, biochar granules gradually shrink in size due to continuous contact with water, rinsing, and immersion, as well as collisions and friction between particles during addition and transfer. Although the volume change of a single biochar granule is negligible, the volume change when many such granules are concentrated together as filter material should not be ignored. Since the volume of the filter media chamber in the filter cartridge remains constant, the reduced overall volume of the filter media decreases the compactness between the particles, allowing water to more easily permeate through the filter cartridge, weakening the filtration effect. In severe cases, this can even lead to gaps at the top of the filter media chamber, allowing water to pass through directly.

[0005] While the aforementioned problem can be addressed by promptly adding new biochar particles to the filter media chamber to maintain the compactness of the filter media particles, in practice, after the filter media particles have been recycled multiple times until their purification capacity irreversibly declines to a certain level, this batch of filter media is discarded and replaced with a new batch for continued recycling. In this situation, if new biochar particles are mixed in midway, even if the overall purification effect of this batch of filter media has decreased to the point where it needs to be replaced, the later-added filter media particles often still retain a relatively high purification capacity and are still worth using. Discarding them along with the filter media would undoubtedly be a waste, at least for those later-added biochar particles. Therefore, the applicant believes that a more scientific and reasonable solution is needed to address this issue. Utility Model Content

[0006] To solve the above technical problems, this solution provides a biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect, including a horizontal mounting plate, a base plate coaxially arranged below the mounting plate, and the mounting plate and the base plate are fixedly connected by a number of vertical connecting columns. These connecting columns are evenly distributed in a circumferential direction around the axis of the mounting plate and the base plate, with intervals on the base plate near the periphery of the base plate and on the mounting plate near the periphery of the mounting plate.

[0007] Between two adjacent connecting columns along the horizontal circumference of the base plate, a first filter screen and a second filter screen are fixedly connected, arranged radially inward and outward along the horizontal direction of the base plate. The first filter screen is on the outside and the second filter screen is on the inside, with an interval between them. Both the first and second filter screens are rigid filter screens. The first and second filter screens are respectively fixed vertically upward to the lower surface of the mounting plate, vertically downward to the upper surface of the base plate, and horizontally circumferentially to the column bodies of two adjacent connecting columns. The base plate, the two adjacent connecting columns along the horizontal circumference of the base plate, and the first and second filter screens between these two connecting columns together form a receiving cavity, which is filled with biochar granular filter media. Each connecting column and each second filter screen together form the water inlet cavity of the filter element mechanism between the mounting plate and the base plate.

[0008] The mounting plate has vertical slots directly above each receiving cavity, connecting the upper and lower surfaces of the mounting plate. A slider is embedded in each slot, capable of sliding vertically back and forth within the slot. The slider extends vertically downwards into the receiving cavity through the opening at the top of the receiving cavity directly below it. A connecting plate is coaxially mounted above the mounting plate, and each slider is simultaneously fixed vertically upwards to the connecting plate. A horizontally positioned limiting rod is also fixed above the connecting plate, with support rods extending vertically downwards from its two ends near its length. The connecting plate slides vertically onto these two support rods. A spring is coaxially mounted on the support rods between the limiting rod and the connecting plate. Under axial compression, the spring passes through the connecting plate and each slider, pressing the biochar particles in each receiving cavity vertically downwards and compacting them.

[0009] Preferably, sealing gaskets are provided on each vertical side of the slider.

[0010] As a preferred embodiment, the mounting plate has a water inlet pipe extending vertically upwards and coaxially to connect the water inlet chamber with the outside, and the connecting plate can be vertically and reciprocatingly slidably fitted onto the water inlet pipe.

[0011] As a preferred option, the bottom end of the support rod is fastened to the mounting plate by bolts.

[0012] Furthermore: A mounting seat is formed by a vertically upward protrusion on the surface of the mounting plate. The mounting seat has a horizontally axial mounting through hole. Corresponding to the mounting through hole, a connecting through hole is formed on the support rod near the bottom end, which is coaxial with the mounting through hole. The bolt coaxially passes through the corresponding mounting through hole and the connecting through hole and is then tightened with a nut, thereby achieving a secure installation of the support rod.

[0013] As a preferred embodiment, the mounting plate extends horizontally outward to form a mounting ring. The mounting ring has several threaded holes evenly distributed circumferentially around its own axis, connecting the upper and lower horizontal surfaces of the mounting ring. Each threaded hole is vertically positioned in the axial direction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect of this utility model (without biochar granular filter media).

[0015] Figure 2 This is a schematic diagram of the detachable fixed installation structure between the mounting plate and the support rod in the biochar filter element mechanism with nitrogen and phosphorus adsorption effect of this utility model.

[0016] Figure 3 This is a front sectional view of the biochar filter element mechanism with nitrogen and phosphorus adsorption effect of this utility model (see attached). Figure 2 (B-B section in the middle)

[0017] Figure 4 For the attached Figure 3 Based on this, a schematic diagram of a structure in which a spring presses the slider vertically downward into the corresponding receiving cavity to keep the biochar granular filter material in the receiving cavity tightly compressed.

[0018] Figure 5 This is a schematic diagram showing the distribution of the receiving chamber and the water inlet chamber on the bottom plate in the biochar filter element mechanism with nitrogen and phosphorus adsorption effect of this utility model (attached). Figure 3 (A-A sectional view, top view)

[0019] Figure 6 This is a schematic diagram of the assembly of the biochar filter element mechanism with nitrogen and phosphorus adsorption effect of this utility model on the filter cylinder.

[0020] Among them, 1—mounting plate, 11—through groove, 15—inlet pipe, 16—mounting ring, 161—threaded hole, 18—mounting seat, 2—base plate, 3—connecting column, 4—first filter screen, 5—second filter screen, 6—accommodating cavity, 7—biochar granular filter media, 8—inlet cavity, 9—slider, 10—connecting plate, 13—limiting rod, 132—support rod, 14—spring, 17—bolt, 19—nut, 20—filter cylinder, 201—outlet pipe. Detailed Implementation

[0021] It should be noted that the terms "front," "back," "left," "right," "horizontal," and "vertical" used in the description of this application refer to the appendix. Figure 3 , 4 In the directions mentioned in 6, "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] As attached Figure 1 As shown, the biochar filter element mechanism with nitrogen and phosphorus adsorption effect of this utility model firstly includes a horizontal mounting plate 1, and a base plate 2 coaxially arranged below the mounting plate 1. The mounting plate 1 and the base plate 2 are stainless steel circular plates with the same plate size. The mounting plate 1 and the base plate 2 are fixedly welded together by four vertical stainless steel connecting columns 3. These four connecting columns 3 are evenly distributed in a circumferential direction around the axis of the mounting plate 1 and the base plate 2, with intervals around the axis of the mounting plate 1 and the base plate 2.

[0023] Between two adjacent connecting columns 3 along the horizontal arc circumference of the base plate 3, a first filter screen 4 and a second filter screen 5, arranged radially outwards and inwards along the horizontal direction of the base plate 2, are fixedly welded. The first filter screen 1 is on the outside and the second filter screen 5 is on the inside. Both the first filter screen 4 and the second filter screen 5 are stainless steel rigid filter screens, and are spaced apart. The first filter screen 4 and the second filter screen 5 are welded vertically upwards to the lower plate surface of the mounting plate 1 and vertically downwards to the upper plate surface of the base plate 2, respectively, and are welded to the columns of two adjacent connecting columns 3 along the horizontal arc circumference of the base plate 2. The base plate 2, the two adjacent connecting columns 3 along the horizontal arc circumference of the base plate 2, and the first filter screen 4 and the second filter screen 5 between these two connecting columns 3 together constitute a receiving cavity 6 (therefore, there are four receiving cavities 6 in this filter element mechanism). The receiving cavity 6 is filled with biochar granular filter media 7. Each connecting column 3 and each second filter screen 5 together form the water inlet cavity 8 of the filter element mechanism between the mounting plate 1 and the base plate 2, as shown in the attached figure. Figure 5 ;

[0024] A water inlet pipe 15 extends vertically upwards coaxially from the mounting plate 1, connecting the water inlet chamber 8 to the outside. Simultaneously, a vertical through-slot 11 is formed on the mounting plate 1 above each receiving chamber 6, connecting the upper and lower surfaces of the mounting plate 1. A slider 9 is embedded in the through-slot 11, capable of vertically sliding back and forth within it. Sealing gaskets (not shown in the attached diagram) are fixedly adhered to each vertical side of the slider 9 with waterproof adhesive. The slider 9 extends vertically downwards into the receiving chamber 6 through the opening at the top of the receiving chamber directly below it. A horizontal connecting plate 10 is coaxially positioned above the mounting plate 1. The connecting plate 10 is coaxially fitted onto the water inlet pipe 15, allowing for vertically sliding back and forth. Simultaneously, each slider 9 is vertically fixed upwards to the connecting plate 10. (See attached diagram.) Figure 3 , 4 The connecting plate 10 is a circular plate with a surface area close to that of the mounting plate 1 or the base plate 2;

[0025] A horizontally oriented limiting rod 13 is fixedly installed above the connecting plate 10. Support rods 132 extend vertically downwards from both ends (not the ends) of the limiting rod 13 near its own length. The connecting plate 10 can slide vertically and reciprocally onto these two support rods 132. (See attached diagram.) Figure 3 , 4 Mounting plates 1 and 18 are vertically raised on the upper surface of the mounting plate, corresponding to the support rods 132. Each mounting plate 18 has a horizontal mounting hole in the front-back direction. The corresponding support rod 132 has a connecting hole near its bottom, which is coaxial with the mounting hole. A bolt 17, which is horizontal in the front-back direction, is simultaneously and coaxially inserted through the corresponding mounting hole and connecting hole, and then tightened with a nut 19. This achieves the secure installation of the support rods 132 and the limiting rods 13 that are jointly supported by the two support rods 132. (See attached diagram) Figure 2 Based on this, each support rod 132 is coaxially fitted with a spring 14, and each spring 14 is located between the limiting rod 13 and the connecting plate 10 and is in a state of axial compression (the springs 14 are not fixed to the limiting rod 13 or the connecting plate 10). Therefore, relying on the elastic restoring force of the springs 14 at this time, the biochar granular filter media 7 in each receiving cavity 6 can be vertically pressed downwards and compacted through the connecting plate 10 and each slider 9, as shown in the attached figure. Figure 3 , 4 .

[0026] In addition, a mounting ring 16 extends horizontally outward in a circumferential direction on the mounting plate 1, coaxially arranged with the mounting plate 1 (the mounting plate 1 and the mounting ring 16 are integrally formed, with a smooth transition between them). The mounting ring 16 has several threaded holes 161 evenly distributed circumferentially around its own axis, connecting the upper and lower horizontal surfaces of the mounting ring 16. Each threaded hole 161 is vertically arranged in the axial direction, as shown in the attached figure. Figure 2 The filter cartridge mechanism of this solution is detachably threaded and fixed to the top of the filter cylinder 20 through these threaded holes 161. The water to be treated (which has undergone conventional filtration treatment to remove particulate impurities through physical interception) is vertically fed into the inlet chamber 8 through the inlet pipe 15. The water then sequentially permeates through the second filter screen 5, the biochar granular filter media 7 in the receiving chamber 6, and the first filter screen 1 to achieve adsorption and purification, and is finally output from the outlet pipe 201 near the bottom of the filter cylinder 20, as shown in the attached diagram. Figure 6 .

[0027] Among them, the sealing gasket is an elastic waterproof rubber gasket, which can prevent water from overflowing upward from between the through groove 11 and the slider 9 during the water treatment process.

[0028] As described in the background section, after several cycles of use, the volume of each individual biochar granule filter media 7 in the same batch will decrease to varying degrees, resulting in a slight decrease in the total volume of the batch of biochar granule filter media 7 when fully stacked together (but at this point, the water treatment activity of this batch of biochar granule filter media 7 is far from reaching the level where it can be discarded). At this time, the spring 14 in the filter cartridge mechanism of this solution always maintains a downward elastic pressure on the biochar granule filter media 7 filled in each receiving cavity 6 through the slider 9 (as shown in the attached diagram). Figure 4 With appendix Figure 3 In contrast, the slider 9 extends vertically downward into the corresponding receiving cavity 6, thus maintaining the elastic compression of the biochar granule filter media 7 within it. This not only avoids the possibility of gaps appearing above the biochar granule filter media 7 in the receiving cavity 6, allowing water to pass directly through, but also helps maintain the tightness between the biochar granule filter media 7 particles in the receiving cavity 6, thereby ensuring the filtration effect of the filter element on the water.

Claims

1. A biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect, characterized in that: Includes a mounting plate (1), and a base plate (2) coaxially arranged below the mounting plate (1). The mounting plate (1) and the base plate (2) are fixedly connected by a plurality of connecting columns (3). Between two adjacent connecting columns (3) along the circumference of the base plate (2), a first filter screen (4) and a second filter screen (5) are fixedly connected, arranged radially inside and outside the base plate (2). The first filter screen (4) is on the outside and the second filter screen (5) is on the inside. The first filter screen (4) and the second filter screen (5) are spaced apart. The base plate (2), the two adjacent connecting columns (3) along the circumference of the base plate (2), and the first filter screen (4) and the second filter screen (5) between the two connecting columns (3) together form a receiving cavity (6). The receiving cavity (6) is filled with biochar granular filter media (7). Each connecting column (3) and each second filter screen (5) together form the water inlet cavity (8) of the filter element mechanism between the mounting plate (1) and the base plate (2). The mounting plate (1) is provided with through grooves (11) above each of the receiving cavities (6) to connect the upper and lower surfaces of the mounting plate (1). Each through groove (11) is fitted with a slider (9). The slider (9) can slide back and forth in the through groove (11) and extend downward into the receiving cavity (6) below it. A connecting plate (10) is provided above the mounting plate (1). The slider (9) is fixedly connected upward to the connecting plate (10). A limiting rod (13) is also fixedly installed above the connecting plate (10). A spring (14) is provided between the limiting rod (13) and the connecting plate (10). Under the downward abutment of the limiting rod (13), the spring (14) is in an axial compression state, thereby further pressing the biochar granular filter material (7) in each of the receiving cavities (6) downward through the connecting plate (10) and each of the sliders (9).

2. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 1, characterized in that: All the connecting columns (3) are evenly distributed circumferentially around the base plate (2) near the periphery of the base plate (2) and the mounting plate (1) near the periphery of the mounting plate (1), with the axis of the mounting plate (1) and the base plate (2) as the central axis.

3. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 1, characterized in that: The first filter screen (4) and the second filter screen (5) are respectively fixed upward to the lower plate surface of the mounting plate (1) and downward to the upper plate surface of the base plate (2), and are fixed along the circumference of the base plate (2) to the adjacent two connecting columns (3).

4. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 1, characterized in that: The mounting plate (1) has an upwardly extending water inlet pipe (15) for connecting the water inlet chamber (8) and the outside. The connecting plate (10) can be slidably fitted onto the water inlet pipe (15) in a reciprocating manner.

5. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 1, characterized in that: The mounting plate (1) extends outward in a circumferential direction to form a mounting ring (16). The mounting ring (16) has a number of threaded holes (161) that are axially connected to the upper and lower surfaces of the mounting ring (16) and are distributed circumferentially at intervals with its own axis as the central axis.

6. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 1, characterized in that: Support rods (132) extend vertically downward from both ends of the limiting rod (13) near its own length direction. The connecting plate (10) is slidably fitted onto the two support rods (132) in a reciprocating manner. The spring (14) is coaxially fitted onto the support rods (132).

7. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 6, characterized in that: The bottom end of the support rod (132) is fastened to the upper surface of the mounting plate (1) by bolts (17).

8. The biochar filter cartridge mechanism with nitrogen and phosphorus adsorption effect as described in claim 7, characterized in that: The mounting plate (1) has an upward protrusion on its upper surface to form a mounting seat (18). The mounting seat (18) has a mounting through hole. Corresponding to the mounting through hole, the support rod (132) has a connecting through hole that is coaxial with the mounting through hole near its bottom end. The bolt (17) coaxially passes through the corresponding mounting through hole and the connecting through hole and is then tightened with a nut (19) to achieve the fastening installation of the support rod (132).

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