A sewage treatment device for aquaculture

Abstract

This utility model discloses a wastewater treatment device for aquaculture, including a box and several filter components. The top of the box is open, and each filter component is set above the box inlet by a bracket. The several filter components are arranged alternately and obliquely from top to bottom to form a multi-stage filtration. The wastewater inlet pipe is located above the uppermost filter component. In use, the wastewater inlet pipe guides the wastewater containing sludge and weeds into the uppermost filter component. The wastewater treated by this filter component enters the next filter component for further filtration, until it is filtered by the lowermost filter component before entering the box.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for dairy farming, and in particular to a wastewater treatment device for farming. Background Technology

[0002] As dairy farming becomes more large-scale and intensive, the amount of wastewater generated during the process is increasing. This wastewater typically contains large amounts of suspended solids such as manure, feed residue, and cow hair, with a high concentration of organic matter. If discharged directly without treatment, it will cause serious environmental pollution.

[0003] Currently, common wastewater treatment methods used in livestock farms include solid-liquid separators, sedimentation tanks, and bar screens. Among these, rotary bar screens or belt filters are common primary physical treatment devices. However, existing equipment has some shortcomings: single-stage filtration often has limited effectiveness, filter media accumulate on the filter screen, easily causing blockages during filtration, requiring frequent shutdowns for cleaning or replacement, and has low automation, affecting treatment efficiency; furthermore, the trapped solid debris (sludge) is often not completely separated from the filter surface, easily causing secondary pollution inside the equipment or incomplete discharge.

[0004] Therefore, there is an urgent need for a wastewater treatment device that can achieve multi-stage high-efficiency filtration, automatic sludge removal, continuous operation, and is not prone to clogging, in order to adapt to the characteristics of large volume and diverse solid impurities in dairy farm wastewater. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a wastewater treatment device for aquaculture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wastewater treatment device for aquaculture, comprising a housing and at least two stages of filtration components; the housing has an opening at the top, and a support is provided at the top of the housing; each filtration component is obliquely positioned above the housing inlet via the support; the at least two stages of filtration components are arranged alternately from top to bottom, with the lower end of the previous stage filtration component's projection in the horizontal direction at least partially covering the upper end of the next stage filtration component; the device further includes a wastewater inlet pipe located above the uppermost filtration component; each stage of the filtration component includes: A framework; A rotatable, looping filter belt with filter holes on its surface; A drive mechanism for driving the filter belt to rotate; A water guide plate is disposed below the filter belt. The upper end of the water guide plate is below the upper end of the filter belt of the filter assembly and extends toward the upper end of the filter belt of the next stage filter assembly, forming a flow channel for guiding the wastewater filtered in this stage to the next stage filter assembly for filtration. A sludge guide plate is disposed below the upper end of the filter belt to receive and discharge sludge and debris scraped off the filter belt; the upper end of the sludge guide plate is connected to the upper end of the water guide plate, and the tilt direction of the sludge guide plate is opposite to the tilt direction of the water guide plate.

[0007] Preferably, the drive mechanism includes belt rollers disposed at both ends of the frame, one of which is driven by a motor.

[0008] Preferably, the filter belts in adjacent filter assemblies rotate in opposite directions, so that sewage enters from the lower end of the filter belt, the filtered water flows through the filter holes, is received by the water guide plate and guided to the next stage, while the trapped sludge and debris are transported upward to its upper end with the filter belt.

[0009] Preferably, the pore diameter of the filter holes on the upper filter belt is larger than that on the lower filter belt.

[0010] Preferably, it also includes a rinsing mechanism, which includes a water outlet pipe disposed on the upper end of the water guide plate, the water outlet pipe having a plurality of water outlet holes, the water outlet holes being obliquely downward toward the surface of the water guide plate.

[0011] Preferably, the filter belt also includes a scraper, which is disposed near the upper end of the filter belt and is used to scrape off the sludge and debris adhering to the surface of the filter belt onto the guide plate.

[0012] Preferably, a detachable filter plate is provided on the inner wall of the housing, and the filter holes on the filter plate are smaller than the filter holes on the filter belt.

[0013] Preferably, the filter plate has upward-facing side plates along its edge, and the side plates and the filter plate form a box-shaped container with an open top, which is used to collect sludge and weeds that fall off the filter plate.

[0014] The beneficial effects of this utility model are: Multi-stage filtration for superior purification: By employing at least two stages of staggered filtration components arranged from top to bottom, and using filter belts with larger pore sizes at the top and smaller at the bottom, wastewater is filtered from coarse to fine. Wastewater flows through filter belts of varying precision at each stage, effectively removing solid impurities of different particle sizes, significantly reducing the suspended solids content in the effluent and lessening the burden on subsequent treatment processes.

[0015] The inclined, staggered layout maximizes space utilization and enables gravity flow: the filter components are inclined and arranged in an alternating pattern, allowing wastewater filtered from one stage to flow into the next stage by gravity. This structure eliminates the need for additional booster pumps, saving energy and reducing the footprint of the unit due to its compact design.

[0016] Reverse rotation and automatic sludge removal effectively prevent clogging and ensure continuous operation: The filter belts of adjacent filter components rotate in opposite directions. With the help of the scraper and guide plate set at the upper end of the filter belt, the trapped sludge and debris can be automatically and continuously scraped off the filter belt and discharged in a concentrated manner while filtering. This fundamentally solves the problem of filter surface clogging, ensures that the device can operate continuously and stably for a long time, and reduces the intensity of manual cleaning and maintenance.

[0017] The ingeniously designed water guide plate ensures precise water flow and also features a self-cleaning function: This unique design not only accurately guides the filtered water to the next stage, but its optimal configuration also integrates a flushing mechanism. The flushing water washes the surface of the water guide plate, preventing sludge from adhering to it, and simultaneously cleans the reverse side of the previous stage's filter belt, further enhancing the equipment's self-cleaning capability.

[0018] 5. Precise final stage for superior water quality: A removable fine filter plate with side panels is added to the inner wall of the tank as a final safety measure. This captures fine suspended particles that may escape from the last stage of filtration, ensuring the quality of the final effluent. The removable design of the filter plate also facilitates daily cleaning and maintenance. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a cross-sectional perspective view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] Figure 4 This is a perspective view of the filter component of this utility model.

[0023] Figure 5 This is a cross-sectional perspective view of the filter assembly of this utility model.

[0024] Figure 6 yes Figure 2 A magnified view of part A in the middle.

[0025] Figure 7 yes Figure 3 A magnified view of part B in the middle section. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction of the component itself. Similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours relative to the individual components, but these directional terms are not intended to limit this invention. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] The wastewater treatment device for dairy farming is described below with reference to the accompanying drawings. This device is mainly used for filtration and impurity removal in farm wastewater treatment. Wastewater enters from the top and passes through multiple filtration components in sequence. Through step-by-step filtration, sludge and weeds contained in the wastewater can be removed as much as possible.

[0029] like Figure 1-7 As shown, a wastewater treatment device for aquaculture includes a housing 10 and several filter components 20. The housing 10 has an opening at the top and a drain outlet and a sewage outlet at the bottom (not shown in the figure). A support 101 is provided on the top of the housing, consisting of two opposing upright plates with filter component mounting holes on the plates. Each filter component 20 is mounted above the inlet of the housing 10 via the support 101.

[0030] Several filter components 20 are arranged in a staggered and inclined manner from top to bottom to form a multi-stage filtration system. The outlet end of the sewage inlet pipe 102 is located above the uppermost filter component 20 (i.e., the outlet end of the sewage pipe is located above the uppermost filter belt). The outlet end of the sewage pipe can be opened in the opposite direction along the width of the filter belt. For example, multiple outlet ends can be set along the width direction of the filter belt, or the outlet end can be set into a long strip shape, so that the sewage can be more evenly distributed on the filter belt. In use, the sewage inlet pipe 102 guides the sewage containing sludge and weeds into the uppermost filter component 20. The sewage treated by this filter component 20 enters the next filter component 20 for further filtration, until it is filtered by the lowermost filter component 20 before entering the housing 10. In this way, sludge, weeds and other impurities in the sewage can be removed step by step through multi-stage filtration.

[0031] Specifically, each stage of the filter assembly 20 includes a frame 201, a filter belt 202, a belt roller 203, a water guide plate 204, and a mud guide plate 205. The filter belt 202 is rotatably mounted within the frame 201 via the belt roller 203. The frame 201, located on both sides of the filter belt 202, prevents sludge and weeds from falling onto the water guide plate 204. The water guide plate 204 is positioned below the filter belt 202 to guide the wastewater produced by this stage of the filter assembly 20 to the upper side of the lower end of the next stage of the filter assembly, allowing it to smoothly enter the next stage of the filter assembly. A mud guide plate 205 is positioned below the upper end of the filter belt 202. The mud guide plate 205 is inclined downwards, and its inclination direction is opposite to that of the water guide plate 204. The mud guide plate 205 is used to transport the sludge and weeds produced by this stage of the filter assembly to the outside of the filter assembly.

[0032] It should be noted that when sewage enters the continuously rotating filter belt 202, particles, weeds and other substances in the sewage are retained on the filter belt due to the continuous rotation of the belt. They are then transported to the guide plate along with the filter belt. The particles and weeds are discharged along the guide plate. Water and particles that can pass through this layer of filter belt fall onto the water guide plate 204 below the filter belt 202 and enter the next stage of filter belt for further filtration along the diversion channel.

[0033] The guide plate (204) is not simply horizontally positioned directly below the filter belt (202), but rather begins below the area of ​​the filter belt (202) in its respective filter assembly (20) and extends downwards and forwards at a certain angle (i.e., towards the upper end of the next stage filter assembly). Its end is located precisely above or near the upper end of the filter belt (202) of the next stage filter assembly (20). In this way, wastewater filtered from the current stage filter belt (202) drips onto the guide plate (204), flows along its inclined surface, and ultimately falls accurately onto the upper surface of the filter belt (202) of the next stage filter assembly (20), thus initiating a new stage of filtration. The guide plate (204) thus constitutes a reliable flow channel connecting the two stages of filter assemblies.

[0034] It should be noted that, in the wastewater treatment process within the filtration assembly of this application, the wastewater is not required to flow downwards or upwards along the filter belt. Instead, the rotation of the belt causes the wastewater to fall onto different positions on the filter belt, pass through the belt, be filtered, and finally enter the guide plate below the filter belt, then flow into the drainage channel, and finally into the next stage of the filtration assembly. In other words, the rotating filter belt ensures that the position of the filter belt during wastewater treatment remains relatively clean, effectively improving filtration efficiency.

[0035] Furthermore, the filter assembly 20 is mounted on the support 101 (vertical plate) on the top of the housing 10 via a belt roller 203, and the belt roller 203 is rotatable relative to the support 101. One of the belt rollers 203 is driven by a motor 207 located on the outside of the support 101 to drive the filter belt 202 to rotate.

[0036] To ensure that the filter belt in each filter assembly operates at an angle, the filter belts 202 in adjacent filter assemblies 20 rotate in opposite directions, and the lower end of the upper side of the filter belt moves upward. This ensures that the sludge and weeds trapped on the filter belt can be transported upward and into the guide plate during the rotation of the filter belt. Figure 2 As shown, the right-side filter belt 202 rotates clockwise, and the left-side filter belt 202 rotates counterclockwise. This allows the filter belts 202 to transport sludge and debris accompanying the wastewater from their lower end to their upper end. The lower end of the upper filter assembly 20 extends at least above the lower end of the filter assembly 20 below it, allowing the wastewater filtered by the upper filter assembly 202 to flow through the drainage channel into the lower filter assembly 20 for further filtration. The wastewater to be filtered enters the lower filter assembly 20 from its lower end and passes through the upper end of the filter device 20, where the sludge and weeds produced during filtration are discharged.

[0037] It should be noted that each filter belt 202 in each stage filter assembly 20 is provided with filter holes, and the filter holes on the upper filter belt 202 are larger than those on the lower filter belt 202. This allows the lower filter belt 202 to further filter and remove the sludge and weeds that are missed by the upper filter assembly, thus forming a step-by-step filtration.

[0038] In order to further treat the wastewater after it has been filtered by several filter components and to prevent sludge lumps or weed clumps that are too large or heavy from falling into the tank 10, several support terminals 103 are provided on the inner wall of the tank 10. The upper surfaces of the support terminals 103 are at the same level. A filter plate 104 is detachably provided on the support terminal 103. The filter holes on the filter plate 104 are smaller than the filter holes on the filter belt 202. The filter plate 104 is used to further filter and remove impurities from the wastewater that enters the tank 10.

[0039] To prevent the sludge and weeds on the filter plate 104 from accumulating and needing to be cleaned, and to prevent them from falling into the housing 10 during disassembly, the filter plate 104 is provided with side plates 1041 on its edge. In this way, the side plates 1041 and the filter plate 104 form a box-shaped container with an open top. The box-shaped container is used to hold the sludge and weeds that fall from the filter plate 104.

[0040] In addition, each filter device also includes a rinsing mechanism, which provides rinsing water to the guide plate 204. The rinsing water flows downward from the upper end of the guide plate 204, which can prevent sludge and weeds from accumulating and remaining on the guide plate 204. The rinsing mechanism includes a water outlet pipe 208 located on the upper end of the guide plate 204 near the filter belt. The water outlet pipe 208 is connected to a water pump (shown in the figure) located inside the housing 10 via a connecting pipe. The water pump inside the housing 10 transports the filtered wastewater to the upper end of each guide plate 204. The rinsing process uses the filtered wastewater, avoiding the introduction of new water sources and causing waste.

[0041] Specifically, the water outlet pipe 208 is arranged parallel to the belt roller 203, and the water outlet pipe 208 has several water outlet holes facing the lower end of the guide plate, so as to form a flowing flushing water flow on the guide plate 204.

[0042] In addition, each filter assembly also includes a scraper 206, which is used to scrape off the sludge and weeds adhering to the surface of the filter belt 202. The scraper 206 is arranged parallel to the upper belt roller 203, and the scraper 206 is in contact with the filter belt 202 but not connected. In this way, during the rotation of the filter belt 202, the scraper 206 can scrape off the sludge and weeds on the filter belt and let them fall into the guide plate, so as to prevent them from adhering to the filter belt 202 and being blown into the next stage filter assembly by sewage.

[0043] The working process of this utility model is as follows: Wastewater first enters the upper end of the filter belt 202 of the top-level filter assembly 20 through the inlet pipe 102. The wastewater passes through the filter holes on the filter belt 202 and falls onto the guide plate. Weeds and other particulate matter in the wastewater are retained on the filter belt and move with it. The filtered water passes through the filter holes, is collected by the unique guide plate (204), and is guided through the diversion channel to the upper end of the second-level filter belt (202) for finer filtration. This process is repeated step by step. Sludge and debris are transported upward by the belt rotating in the opposite direction and scraped off by the scraper (206) to the guide plate (205) for discharge. This achieves a highly efficient process of step-by-step filtration of wastewater and continuous cleaning of sludge. At the same time, the flushing water provided by the flushing assembly flows downward from the upper end of the guide plate, which can further prevent dirt residue on the guide plate.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make appropriate changes and modifications to the above-described embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and any modifications and alterations to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although this specification uses some specific terminology, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A wastewater treatment device for aquaculture, comprising a housing (10) and at least two stages of filter components (20); the housing (10) has an opening at the top, and a support (101) is provided at the top of the housing (10), each filter component (20) being obliquely arranged above the inlet of the housing (10) via the support (101), characterized in that, The at least two-stage filtration components (20) are arranged alternately from top to bottom, with the lower end of the previous stage filtration component (20) projecting horizontally to at least partially cover the upper end of the next stage filtration component (20); the device also includes a wastewater inlet pipe (102) located above the uppermost filtration component (20); each stage of the filtration component (20) includes: A framework (201); A rotatable filter belt (202) is arranged around the perimeter and has filter holes on its surface; A drive mechanism for driving the filter belt (202) to rotate; A water guide plate (204) is disposed below the filter belt (202). The upper end of the water guide plate (204) is below the upper end of the filter belt (202) of the filter assembly (20) and extends toward the upper end of the filter belt (202) of the next stage filter assembly (20), forming a flow channel for guiding the wastewater filtered in this stage to the next stage filter assembly (20) for filtration. A mud guide plate (205) is disposed below the upper end of the filter belt (202) for receiving and discharging sludge and debris scraped off from the filter belt (202).

2. The wastewater treatment device for aquaculture according to claim 1, characterized in that, The drive mechanism includes belt rollers (203) disposed at both ends of the frame (201), one of which is driven by a motor (207).

3. The wastewater treatment device for aquaculture according to claim 2, characterized in that, The filter belts (202) in adjacent filter components (20) rotate in opposite directions, so that sewage enters from the lower end of the filter belt (202), the filtered water flows through the filter holes, is received by the water guide plate (204) and guided to the next stage, while the intercepted sludge and debris are transported upward to the upper end of the filter belt (202).

4. The wastewater treatment device for aquaculture according to claim 3, characterized in that, The filter hole diameter on the upper filter belt (202) is larger than that on the lower filter belt (202).

5. A wastewater treatment device for aquaculture according to claim 4, characterized in that, It also includes a rinsing mechanism, which includes a water outlet pipe (208) located at the upper end of the water guide plate (204). The water outlet pipe (208) has several water outlet holes, which are obliquely downward facing the surface of the water guide plate (204).

6. A wastewater treatment device for aquaculture according to any one of claims 1-5, characterized in that, It also includes a scraper (206), which is located near the upper end of the filter belt (202) and is used to scrape the sludge and debris adhering to the surface of the filter belt (202) onto the guide plate (205).

7. A wastewater treatment device for aquaculture according to claim 6, characterized in that, The inner wall of the housing (10) is provided with a removable filter plate (104), and the filter holes on the filter plate (104) are smaller than the filter holes on the filter belt (202).

8. A wastewater treatment device for aquaculture according to claim 7, characterized in that, The filter plate (104) has an upward-facing side plate (1041) at its edge. The side plate (1041) and the filter plate (104) form a box-shaped container with an open top. The box-shaped container is used to collect sludge and weeds that fall from the filter plate (104).

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