A manure return filter tank

Abstract

This utility model provides a manure return filter tank, including a tank body with an inlet pipe and a waste liquid pipe connected to its top, and a liquid outlet assembly at the bottom. The liquid outlet assembly includes a perforated plate and a liquid collector. The perforated plate is filled with filter media for filtering manure, and the liquid collector includes a funnel-shaped collection section and a discharge pipe, with the perforated plate placed inside the collection section. The inlet pipe is connected to a distributor, and a gap is left between the distributor and the edge of the tank body, with the edge of the gap being smaller than the diameter of the smallest filter media particle. The distributor includes a distribution plate and a connecting pipe, with an outlet on the distribution plate and an inlet on the connecting pipe, the inlet being positioned above the distribution plate. This utility model uses a waste liquid pipe and an inlet pipe set at the top of the tank body, with the waste liquid pipe positioned below the inlet pipe. This allows the cleaning liquid to enter the tank body through the discharge pipe and, after cleaning the filter media, to be discharged from the tank body through the waste liquid pipe. This allows the filter media inside the tank to be cleaned after a predetermined usage period, extending the service life of the filter media.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment technology, and in particular relates to a filter tank for returning manure to the field. Background Technology

[0002] Livestock and poultry manure is a liquid mixture mainly composed of feces, urine, spilled drinking water and flushing water, and a small amount of loose feed produced during livestock and poultry farming. Returning manure to farmland refers to a technique of irrigating farmland with fermented livestock and poultry manure to achieve resource recycling, reduce the use of chemical fertilizers in farmland, improve long-term soil fertility, and reduce environmental pollution. Even after preliminary fermentation, some impurities (such as feed residue) remain. Before drip irrigation, the manure usually needs to be filtered by appropriate filter media to prevent clogging of the drip irrigation pipes. However, during filtration, the filter media also accumulates a significant amount of unfiltered substances, failing to effectively adsorb and filter them. Currently, the filter media needs to be replaced after a period of use. Utility Model Content

[0003] In view of this, the present invention aims to provide a manure return filter tank that can be flushed after a predetermined period of use, thereby reducing the frequency of filter replacement.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A manure return filter tank, including The tank body has its top end connected to the inlet pipe and the waste pipe, with the inlet of the inlet pipe positioned above the outlet of the waste pipe. The bottom of the tank body has an outlet assembly, which includes an orifice plate and a collector. The orifice plate is equipped with filter media for filtering sewage, and the collector includes a funnel-shaped collection section and a discharge pipe. The orifice plate is placed inside the collection section. The liquid inlet pipe is connected to a liquid distributor, and the liquid distributor has a gap between itself and the edge of the tank body, and the edge of the gap is smaller than the diameter of the smallest filter material particle. The liquid distributor includes a liquid distribution plate and a connecting pipe. The liquid distribution plate has an outlet, and the connecting pipe has an inlet. The inlet is located above the liquid distribution plate.

[0005] Furthermore, the liquid outlet assembly is also provided with a mesh pad, the filter material is placed on the mesh pad, and the pore size of the mesh pad is smaller than the diameter of the smallest particle of the filter material.

[0006] Furthermore, a through hole is opened on the bottom side wall of the drain pipe, and the through hole is located inside the tank.

[0007] Furthermore, the inner wall of the tank is provided with a support ring, and the edge of the liquid collection part is fixed on the support ring.

[0008] Furthermore, each through hole of the orifice plate corresponds to a nozzle, and the nozzle is fixedly connected to the orifice plate.

[0009] Furthermore, a nozzle is fixedly installed on the outlet of the liquid distribution plate.

[0010] Furthermore, the top of the tank is connected to the first port of a three-way valve, and the inlet pipe and the waste pipe are connected to the second and third ports of the three-way valve, respectively. When liquid flows into the tank from the inlet pipe, the waste pipe is not connected to the tank. When the tank is connected to the waste pipe, the inlet pipe is not connected to the tank.

[0011] Furthermore, the three-way valve is also provided with a receiving cavity, and the receiving cavity is arranged opposite to the third connecting port. A baffle is placed in the receiving cavity, and a guide plate is inclinedly arranged above the third connecting port, with the lower end of the guide plate being arranged opposite to the baffle. A plug is also provided in the third connecting port. When the baffle moves into the receiving cavity, the plug can block the third connecting port. When the baffle moves out of the receiving cavity, the third connecting port can communicate with the first connecting port.

[0012] Furthermore, the edge of the third connecting port extends inward to form a limiting edge, the plug is placed inside the third connecting port, and the plug is connected to the baffle through a connecting rod. When the baffle moves into the receiving cavity, the edge of the plug can be tightly pressed against the limiting edge, and the diameter of the plug is smaller than the inner diameter of the third connecting port.

[0013] Furthermore, the cavity contains a spring, with its two ends abutting against the side wall and the baffle of the cavity, respectively.

[0014] Compared with existing technologies, the manure return filter tank of this utility model has the following advantages: This utility model adopts a method of setting a waste liquid pipe and a liquid inlet pipe at the top of the tank, and placing the waste liquid pipe below the liquid inlet pipe, so that the cleaning liquid can enter the tank through the drain pipe and be discharged from the tank through the waste liquid pipe after cleaning the filter media. Thus, the filter media in the tank can be cleaned after a predetermined period of use, extending the service life of the filter media. By using a through hole in the drain pipe, the sewage can be prevented from flowing into the bottom of the tank through the gap between the drain component and the tank after long-term use, thus preventing the sewage from being discharged. A three-way valve is used to connect the inlet pipe and the waste pipe to the tank body. The baffle and plug of the three-way valve are matched to prevent sewage from entering the waste pipe and causing sewage waste. At the same time, by setting the outlet of the waste pipe below the outlet of the inlet pipe, the cleaning solution after cleaning is prevented from flowing into the container of sewage treatment in the early stage through the outlet of the inlet pipe, which would affect the sewage treatment. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the filter tank; Figure 2 This is a schematic diagram of the internal structure of the filter tank; Figure 3 This is a schematic diagram of the structure of a three-way valve.

[0016] Explanation of reference numerals in the attached figures: 1-Tank body; 11-Supporting edge; 2-Drainage assembly; 21-Orifice plate; 22-Collector; 221-Collection section; 222-Drainage pipe; 223-Through hole; 3-Distributor; 31-Distribution tray; 311-Outlet; 32-Connecting pipe; 321-Inlet; 4-Three-way valve; 41-Receiving cavity; 42-First connecting port; 43-Second connecting port; 44-Third connecting port; 45-Baffle; 46-Plug; 47-Connecting rod; 48-Spring; 49-Guide plate. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] The manure return filter tank of this utility model includes a tank body 1, the top of which is connected to an inlet pipe and a waste liquid pipe via a three-way valve 4, and the bottom is provided with a liquid outlet assembly. The liquid outlet assembly includes an orifice plate 21 and a liquid collector 22. The liquid collector 22 includes a funnel-shaped liquid collection part 221 and a drain pipe extending from the bottom of the liquid collection part 221. The orifice plate 21 is placed inside the liquid collection part 221, and the outer diameter of the liquid collection part 221 is the same as the inner diameter of the tank body 1. The edge of the orifice plate 21 can be fixed to the liquid collector 22 by screws, welding, or other means. In this embodiment, a mesh pad is also placed on the orifice plate 21. The edge of the mesh pad is fixed to the edge of the orifice plate 21 by screws or fixing clips. Filter media for filtering manure is placed on the mesh pad, and the pore size of the mesh pad is smaller than the diameter of the smallest particle in the filter media, thereby preventing the filter media from entering the through holes of the orifice plate 21 and causing blockage. In other embodiments, nozzles are also provided on the through holes of the perforated plate 21. The outer shell of the nozzle is fixed to the holes on the perforated plate 21 by means of screw connection or other methods. A barrier mesh is provided inside the nozzle to prevent filter media particles from entering the nozzle. In this embodiment, the filter media is a mixture of quartz sand, anthracite particles, porous ceramics, and manganese sand. The amount of each material can be set by those skilled in the art according to the impurity content of the sewage to be filtered. In other embodiments, a single filter media or other substances can also be selected as the filter media.

[0022] In this embodiment, the liquid distributor 3 includes a liquid distribution plate 31 and a connecting pipe 32. The connecting pipe 32 can communicate with the liquid inlet pipe. The bottom of the liquid distribution plate 31 is provided with multiple nozzles, each of which is provided with a baffle mesh. The aperture of the baffle mesh is smaller than the diameter of the smallest filter media particle. The liquid distribution plate 31 is placed inside the filter tank, and a gap is left between the edge of the liquid distribution plate 31 and its inner diameter. The width of the gap is smaller than the smallest diameter of the filter media particle.

[0023] In this embodiment, the drainage pipe 222 of the drainage component has a through hole 223 at the bottom, and the through hole 223 is located at the bottom of the tank 1. After a long period of time, the sewage can also flow into the bottom of the tank 1 through the gap that may exist between the collector 22 and the tank 1 due to poor sealing after filtration. The sewage at the bottom of the tank 1 after filtration can flow out through the through hole 223 of the drainage pipe 222.

[0024] During operation, the sewage to be filtered enters the tank 1 through the inlet pipe, and is then sprayed onto the filter media inside the tank 1 by the distributor 3 connected to the inlet pipe. During this process, the sewage can fall onto the filter media through the outlet 311 on the distributor plate 31. When the sewage volume is large, it can also be sprayed out through the outlet 311 of the connecting pipe 32, first contacting the upper surface of the distributor plate, then flowing along the upper surface to the edge of the distributor plate, and finally falling onto the filter media through the gap between the distributor plate and the side plate of the tank 1. The filter media adsorbs and filters the liquid, which is then discharged through the perforated plate 21 into the liquid collector 22 and then discharged outwards for crop irrigation. After a predetermined period of use, the drain pipe is connected to a water pump, so that the cleaning liquid enters the tank 1 through the water pump. During this process, the cleaning liquid first passes through the through hole 223 opened on the drain pipe 222, so that the cleaning liquid completely submerges the through hole 223 to form a liquid seal effect, or the cleaning liquid fills the bottom of the tank 1, so as to avoid the space at the bottom of the tank 1 from affecting the cleaning. The cleaning solution is sprayed out through the holes on the perforated plate 21 via the funnel-shaped liquid collector 22 to rinse the filter media. When the cleaning solution is no longer in the filter media, the filter media is pushed upward by the buoyancy and the water flow impact when the cleaning solution is sprayed out of the through holes 223 of the perforated plate 21. Then, the filter media is rubbed and squeezed by each other during the floating process, thus cleaning the filter media and maintaining a relatively efficient filtration effect. When the cleaning solution fills the entire tank 1, the cleaning solution at the top of the tank 1 enters the distributor 3 through the outlet 311 and inlet 321 of the distributor 3 at the top of the tank 1 and flows into the waste liquid pipe and is discharged outward. After the liquid in the waste liquid pipe reaches the preset clarity, the pump connected to the drain pipe is removed, so that the remaining cleaning solution in the tank 1 is discharged outward from the drain pipe, completing the filter media cleaning. Optionally, the bottom of the distribution plate is conical, so that the fecal residue washed by the filter media can float on the upper layer of the washing liquid and float upward along the conical distribution plate, or enter the distributor through the nozzle on the distribution plate, or float to the edge of the distribution plate, move through the gap at the edge of the distribution plate to the top of the distribution plate, and enter the distributor through the inlet 321, thereby facilitating the flow of the filtered fecal residue out through the waste liquid outlet.

[0025] In this embodiment, in order to make the impact of the cleaning liquid when it flows out of the perforated plate 21 more concentrated, and to make the water flow speed faster during the cleaning process, thereby improving the effect of mutual rubbing of the filter media, nozzles can be set on the through holes of the perforated plate 21.

[0026] The top of the tank 1 is connected to the first port 42 of the three-way valve 4, the inlet pipe is connected to the second port 43 of the three-way valve 4, and the waste pipe is connected to the third port 44 of the three-way valve 4. When liquid flows into the tank 1 from the inlet pipe, the waste pipe is not connected to the tank 1. When the tank 1 is connected to the waste pipe, the inlet pipe is not connected to the tank 1, and the second port 43 is positioned above the third port 44. Specifically, the three-way valve 4 includes a shell, and a receiving cavity 41 is provided on one side of the shell. The receiving cavity 41 corresponds to the third port 44. A baffle 45 is built into the receiving cavity 41. The baffle 45 can move along the depth direction of the receiving cavity 41. Specifically, in this embodiment, a spring 48 is built into the receiving cavity 41, and the two ends of the spring 48 abut against the inner wall of the receiving cavity 41 and the baffle 45, respectively. A retaining edge is provided at the edge of the opening of the receiving cavity 41. When the spring 48 is in its natural state, the baffle 45 abuts against the retaining edge. A guide plate 49 is provided above the third connecting port 44, and the guide plate 49 is inclined, with its lower end facing the baffle 45. This allows the sewage to flow towards the baffle 45 when it flows down, thereby using the water flow impact to push the baffle 45 into the receiving cavity 41, allowing the sewage to flow backward. A plug 46 is provided inside the third connecting port 44. The baffle 45 and the plug 46 are connected by a connecting rod 47. Specifically, both ends of the connecting rod 47 are connected to the baffle 45 and the plug 46 by bolts or welding, respectively. Specifically, the baffle 45 is first connected to one end of the connecting rod 47 by welding, and the plug 46 is screwed to the other end of the connecting rod 47 for easy installation during production. Alternatively, both ends of the connecting rod 47 can be screwed to the baffle 45 and the plug 46, respectively. The installer can first insert the baffle 45 into the receiving groove, and then assemble the connecting rod 47 and the plug 46 in sequence. A gap is left between the plug 46 and the side wall of the third connecting port 44, allowing the wastewater after cleaning to flow into the third connecting port 44. The inner end of the side wall of the third connecting port 44 extends inward to form a limiting edge. When the baffle 45 moves into the receiving cavity 41, the edge of the plug 46 can abut against the limiting edge, preventing sewage from flowing into the third connecting port 44 under impact. Simultaneously, the first connecting port 42 connects to the second connecting port 43 through the receiving cavity 41, allowing sewage to enter the tank 1. During the filter media cleaning process, no sewage enters the second connecting port 43. The baffle 45 resets under the action of the spring 48, causing the plug 46 to separate from the limiting edge. The third connecting port 44 then connects to the first connecting port 42. During the filter media cleaning process, the cleaning liquid on the upper layer of the tank 1 enters the first connecting port 42 through a distributor and then exits through the third connecting port 44. This prevents the cleaning liquid from entering the container mixed with sewage, thus avoiding impact on the initial treatment of the sewage.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manure return filter tank, characterized in that: include The tank body has its top end connected to the inlet pipe and the waste pipe, with the inlet of the inlet pipe positioned above the outlet of the waste pipe. The bottom of the tank body has an outlet assembly, which includes an orifice plate and a collector. The orifice plate is equipped with filter media for filtering sewage, and the collector includes a funnel-shaped collection section and a discharge pipe. The orifice plate is placed inside the collection section. The liquid inlet pipe is connected to a liquid distributor, and the liquid distributor has a gap between itself and the edge of the tank body, and the edge of the gap is smaller than the diameter of the smallest filter material particle. The liquid distributor includes a liquid distribution plate and a connecting pipe. The liquid distribution plate has an outlet, and the connecting pipe has an inlet. The inlet is located above the liquid distribution plate.

2. The manure return filter tank according to claim 1, characterized in that: The liquid outlet assembly is also provided with a mesh pad, and the filter material is placed on the mesh pad, with the pore size of the mesh pad being smaller than the diameter of the smallest particle of the filter material.

3. The manure return filter tank according to claim 1, characterized in that: The drain pipe has a through hole on the bottom side wall, and the through hole is located inside the tank.

4. A manure return filter tank according to claim 1, characterized in that: The inner wall of the tank is provided with a support ring, and the edge of the liquid collection part is fixed on the support ring.

5. A manure return filter tank according to claim 1, characterized in that: Each through hole of the orifice plate corresponds to a nozzle, and the nozzle is fixedly connected to the orifice plate.

6. A manure return filter tank according to claim 1, characterized in that: A nozzle is fixedly installed on the outlet of the liquid distribution plate.

7. A manure return filter tank according to claim 1, characterized in that: The top of the tank is connected to the first port of a three-way valve. The inlet pipe and the waste pipe are connected to the second and third ports of the three-way valve, respectively. When liquid flows into the tank from the inlet pipe, the waste pipe is not connected to the tank. When the tank is connected to the waste pipe, the inlet pipe is not connected to the tank.

8. A manure return filter tank according to claim 7, characterized in that: The three-way valve also has a receiving cavity, which is positioned opposite to the third connecting port. A baffle is placed inside the receiving cavity, and a guide plate is inclinedly arranged above the third connecting port, with the lower end of the guide plate opposite to the baffle. A plug is also provided inside the third connecting port. When the baffle moves into the receiving cavity, the plug can block the third connecting port. When the baffle moves out of the receiving cavity, the third connecting port can connect with the first connecting port.

9. A manure return filter tank according to claim 8, characterized in that: The edge of the third connecting port extends inward to form a limiting edge. The plug is placed inside the third connecting port, and the plug is connected to the baffle through a connecting rod. When the baffle moves into the receiving cavity, the edge of the plug can be tightly pressed against the limiting edge. The diameter of the plug is smaller than the inner diameter of the third connecting port.

10. A manure return filter tank according to claim 8, characterized in that: The cavity contains a spring, with its two ends abutting against the side wall and the baffle of the cavity, respectively.

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