Farmland drainage channel reverse filtration system in collapse platform area

Abstract

The utility model discloses a farmland drainage channel reverse filtration system in a collapse platform area, which belongs to the field of agricultural planting and comprises a channel body. The inverted filter layer is arranged in the water channel body and is used for filtering and precipitating sewage flowing in the water channel body; the filter baffle is movably arranged in the canal body at the outer end part of the inverted filter layer; the grit chamber is arranged at the bottom of the water channel body and is communicated with the inverted filter layer. The reverse filtration system is used for filtering sewage flowing in the water channel, so that water and soil loss caused by the fact that the sewage in the collapsed terrace area is mixed with silt and discharged from the drainage channel is prevented, and the effluent quality is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural planting, and specifically relates to an anti-filter system for a farmland drainage canal in a collapse bench area. Background Art

[0002] A bench is a landform with steep cliffs on all sides, standing upright adjacent to a lowland, and having a basically flat top like a table. Due to intermittent tectonic uplift, it is mostly distributed at the edge of mountains or in the mountains, and is a landform that transitions from plains to hills and low mountains.

[0003] Due to the terrain of the bench, it is prone to collapse during the rainy season. After the collapse, the broken soil is easily washed into the drainage canal by rainwater, resulting in a large amount of soil loss. Moreover, if the land collapse is not treated in time, sewage will be formed during drainage, resulting in relatively serious water pollution during water discharge and being not convenient to discharge into the pond.

[0004] Currently, in order to reduce soil erosion, filter plates are added in the water canal. For example, an irrigation water canal disclosed in Patent No. 202320177560.9. After careful analysis of this irrigation water canal, if it is used for drainage in a collapse bench area, since the drainage in the collapse bench area is prone to be mixed with sand and broken soil, it cannot effectively achieve filtration only through the filter plate, resulting in the possible existence of soil erosion, and the discharged water is still sewage and is not convenient to be directly discharged into the pond. Content of the Utility Model

[0005] Therefore, in order to solve the above deficiencies, the utility model provides an anti-filter system for a farmland drainage canal in a collapse bench area. An anti-filter layer is arranged inside the water canal body of this anti-filter system, which can facilitate the filtration of muddy water and sand particles in the collapse bench area, effectively prevent the soil and sand particles from flowing out through the filter plate, not only avoid soil erosion, but also ensure the quality of the discharged water and is convenient to be directly discharged into the pond.

[0006] The utility model is implemented as follows. An anti-filter system for a farmland drainage canal in a collapse bench area is constructed, including a water canal body;

[0007] An anti-filter layer is arranged inside the water canal body to filter and precipitate the sewage flowing in the water canal body;

[0008] A filter baffle is movably arranged inside the water canal body at the outer end of the anti-filter layer;

[0009] A grit chamber is arranged at the bottom of the water canal body and is in communication with the anti-filter layer.

[0010] Arranging a grit chamber and keeping it in communication with the anti-filter layer is to facilitate slowing down the flow rate of the water in the water canal body, thereby facilitating sedimentation, depositing the sand particles in the grit chamber, and at the same time facilitating the filtration of the sand particles and broken soil on the anti-filter layer to flow back into the grit chamber.

[0011] Specifically, the filter layer is arranged at one end of the water channel body. One end of the grit chamber is arranged at the bottom of the water channel body, and the other end extends to the outside. Multiple filtering areas are arranged on the filter layer.

[0012] According to the above technical features, arranging the filter layer at the end of the water channel body facilitates the water in the external drainage system to flow directly into the filter layer for filtration after flowing into the water channel body, which is convenient for direct filtration and prevents sand grains from falling into the gap between the filter layer and the water channel body and affecting subsequent cleaning. Arranging one end of the grit chamber outside the water channel body facilitates the sand grains and broken soil filtered by the filter layer to flow back into the grit chamber.

[0013] Specifically, the top of the filter layer is an inclined surface, the low end of which is flush with the end of the water channel body, and a filter baffle is movably arranged outside the high end. The water flow direction in the water channel body is from the low end of the filter layer to the high end.

[0014] According to the above technical features, setting the filter layer as an inclined surface facilitates the filtration of sewage, so as to ensure that sand grains and broken soil are left on the filter layer, and the filtered clear water passes through the filter layer and is discharged from the water channel body to ensure the quality of the discharged water.

[0015] Specifically, the multiple filtering areas of the filter layer include fine sand, medium sand and coarse sand. The fine sand is distributed at the low end of the filter layer, and the coarse sand is distributed at the high end of the filter layer.

[0016] According to the above technical features, setting the multiple filtering areas on the filter layer and the distribution method facilitate the rapid filtration of sand grains and broken soil sludge mixed in the water and avoid direct discharge.

[0017] Specifically, a convex platform is formed between the high end of the filter layer and the inner bottom of the water channel body. Vertical limiting rods are arranged oppositely on both sides of the inner end of the water channel body. The filter baffle is vertically inserted into the water channel body and clamped in the gap between the convex platform formed at the high end of the filter layer and the limiting rods.

[0018] According to the above technical features, setting the installation form of the filter baffle not only facilitates fixation, so as to realize the preliminary filtration of the water flowing in the water channel body, but also facilitates lifting it to clean the water channel body and the filter layer.

[0019] The utility model has the following beneficial effects:

[0020] The filter system is provided with a filter layer in the water channel body, which can facilitate the filtration of muddy water and sand grains in the collapse platform area, effectively prevent the soil and sand grains from flowing out through the filter plate, not only avoid soil erosion, but also ensure the quality of the discharged water and facilitate direct discharge into the pond. Description of the Drawings

[0021] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the specification. Together with the specific embodiments of the present utility model, they are used to explain the present utility model, but do not constitute any limitation to the present utility model. In the accompanying drawings:

[0022] Figure 1 is a schematic structural view of the present utility model;

[0023] Figure 2 is a schematic view of the top-down direction of the present utility model;

[0024] Figure 3 is a half-sectional view in the front view direction of the present utility model (where the arrow direction is the water flow direction);

[0025] Figure 4 is a schematic structural view of the present utility model when the filter baffle is lifted;

[0026] Figure 5 is Figure 4 a schematic structural view of another perspective in

[0027] In the figure: 1, water channel body; 2, inverted filter layer; 3, grit chamber; 4, limit rod; 5, filter baffle. Specific Embodiments

[0028] The following further specifically illustrates the technical solutions of the present utility model through specific embodiments in combination with the accompanying drawings; it should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model and do not serve as any limitation to the present utility model; the accompanying drawings in the present utility model are only used in conjunction with the embodiments for description and are convenient for understanding and use, and do not serve as any relevant limitation to the present utility model.

[0029] It should be noted that the structures, ratios, sizes, etc. schematically shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the implementable conditions of the present utility model. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0030] As described in the background art, in the area of the landslide platform, due to the easy flow of land collapse materials together with water, the muddy water or sewage mixed with sand grains formed will directly drain out from the drainage ditch, resulting in relatively serious soil erosion, and the discharged sewage is not convenient to be directly discharged into the pond. Although the existing water channels are provided with filter baffles, the filtering effect on muddy water and sand grains is not ideal, resulting in low practicability.

[0031] For the above reasons, please refer to the attached Figure 1 - Attachment Figure 5 , the present utility model provides an anti-filter system for farmland drainage channels in a collapse platform area, including a water channel body 1;

[0032] An anti-filter layer 2 is arranged in the water channel body 1 to filter and precipitate the sewage flowing in the water channel body 1;

[0033] A filtering baffle 5 is movably arranged in the water channel body 1 at the outer end of the anti-filter layer 2;

[0034] A grit chamber 3 is arranged at the bottom of the water channel body 1 and is in communication with the anti-filter layer 2.

[0035] Setting a grit chamber and keeping it in communication with the anti-filter layer is to facilitate slowing down the flow rate of the water in the water channel body, so as to easily achieve precipitation, precipitate sand grains into the grit chamber, and at the same time facilitate filtering the sand grains and broken soil on the anti-filter layer to flow back into the grit chamber.

[0036] Specifically, the anti-filter layer 2 is arranged at one end of the water channel body 1, one end of the grit chamber 3 is arranged at the bottom of the water channel body 1, and the other end extends to the outside, and multiple filtering zones are arranged on the anti-filter layer 2.

[0037] According to the above technical features, arranging the anti-filter layer at the end of the water channel body is to facilitate the water in the external drainage system to directly flow into the anti-filter layer for filtering after flowing into the water channel body, which is convenient for direct filtering and prevents sand grains from falling into the gap between the anti-filter layer and the water channel body, affecting subsequent cleaning. Arranging one end of the grit chamber outside the water channel body is to facilitate the sand grains and broken soil filtered by the anti-filter layer to flow back into the grit chamber.

[0038] Specifically, the top of the anti-filter layer 2 is an inclined surface, its low end is flush with the end of the water channel body 1, and a filtering baffle 5 is movably arranged outside the high end, and the water flow direction in the water channel body 1 is from the low end of the anti-filter layer 2 to the high end.

[0039] According to the above technical features, setting the anti-filter layer as an inclined surface is convenient for filtering sewage, so as to ensure that sand grains and broken soil are left on the anti-filter layer, and the filtered clear water passes through the anti-filter layer and is discharged from the water channel body, ensuring the water quality of drainage.

[0040] Specifically, the multiple filtering zones of the anti-filter layer 2 include fine sand, medium sand and coarse sand, and the fine sand is distributed at the low end of the anti-filter layer 2, and the coarse sand is distributed at the high end of the anti-filter layer 2.

[0041] Furthermore, the particle size of the fine sand can be configured as 0.25 - 0.35 mm, the medium sand 0.35 - 0.5 mm, and the coarse sand 0.5 - 2 mm.

[0042] According to the above technical features, the multi-segment filtering areas and distribution modes provided on the filter layer are convenient for quickly filtering the sand grains and broken soil sludge mixed in the water and avoiding direct discharge.

[0043] Please refer to the attached Figure 3 - attached Figure 5 Specifically, a boss is formed at the high end of the filter layer 2 and the inner bottom of the water channel body 1. Vertical limiting rods 4 are arranged oppositely on both sides of the inner end of the water channel body 1. The filtering baffle 5 is vertically inserted into the water channel body 1 and is clamped in the gap between the boss formed at the high end of the filter layer 2 and the limiting rod 4.

[0044] According to the above technical features, setting the installation form of the filtering baffle is not only convenient for fixing, so as to realize the preliminary filtration of the water flowing in the water channel body, but also convenient for lifting it to clean the water channel body and the filter layer.

[0045] Furthermore, the length of the filter layer of this filter system can be set to 3 to 9 m, and the inclination of the top of the filter layer to the horizontal plane is 0.1%.

[0046] Before use, this filter system is pre-connected to an external drainage system. After connection, the sewage first flows into the grit chamber 3 for sedimentation, and at the same time, the flow rate of the water is slowed down. Subsequently, when the liquid level is higher than the inner bottom of the water channel body 1, it flows onto the filter layer 2. The sediment in the sewage is filtered on the filter layer 2, while the clear water passes through the gaps between the fine sand on the filter layer 2, flows downward and finally passes through the filtering baffle 5 and is directly discharged. Part of the sediment filtered on the filter layer 2 flows back into the grit chamber 3 under the impact of the subsequent water flow, and the other part may move upward to the upper end of the filter layer 2 and be blocked by the filtering baffle 5. At the same time, the filtering baffle 5 can filter out large suspended matters, etc., and finally it can be cleaned manually.

[0047] The above description is a detailed description of the preferred and feasible embodiments of the present invention, but the embodiments are not used to limit the scope of the patent application of the present invention. Any equivalent changes or modifications completed under the technical spirit prompted by the present invention shall fall within the scope of the patent covered by the present invention.

Claims

1. A farmland drainage filtration system in a landslide area, characterized by: include The main body of the water channel; The filter layer is set in the water channel to filter and precipitate the sewage flowing in the water channel; A filter baffle is movably arranged in the water channel body at the outer end of the filter layer; The sand settling tank is set at the bottom of the channel body and is connected to the filter layer.

2. According to claim 1, a farmland drainage ditch filtration system in a landslide area is characterized by: The filter layer is arranged on one end of the water channel body, one end of the sand settling tank is arranged at the bottom of the water channel body, and the other end extends to the outside, and multiple filtering areas are arranged on the filter layer.

3. According to claim 2, a farmland drainage filtration system in a landslide area is characterized by: The top of the filter layer is an inclined surface, the lower end of which is flush with the end of the channel body, and a filter baffle is movably arranged outside the high end. The water flow in the channel body flows from the lower end of the filter layer to the high end.

4. According to claim 3, a farmland drainage filtration system in a landslide area is characterized by: The multi-stage filtration area of ​​the reverse filter layer contains fine sand, medium sand and coarse sand, the fine sand is distributed at the lower end of the reverse filter layer, and the coarse sand is distributed at the higher end of the reverse filter layer.

5. According to claim 3, a farmland drainage filtration system in a landslide area is characterized by: The high end of the filter layer forms a boss with the inner bottom of the channel body, and vertically distributed limit rods are arranged opposite to each other on both sides of the inner end of the channel body. The filter baffle is vertically inserted into the channel body and clamped in the gap between the boss formed at the high end of the filter layer and the limit rod.

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