Full-automatic multi-medium filter for sewage treatment

Abstract

The utility model belongs to sewage filtering treatment technical field, specifically provide a full -automatic multi -media filter for sewage treatment, including jar body, water outlet unit, filter unit, three -way joint, water inlet unit and backwashing unit, jar body inside forms a plurality of independent containing cavities, every containing cavity all with water inlet branch pipe, water outlet branch pipe and backwashing branch water pipe intercommunication, and pass through the valve control pipeline's on -off of each respectively, during normal operation, backwashing valve is in the closed state, and the sewage passes through water inlet main pipe, water inlet branch pipe and enters containing cavity, and after filter unit, from water outlet, water outlet branch pipe and water outlet main pipe discharge. When the filter unit in one containing cavity needs backwashing, the corresponding water inlet valve is closed, and the backwashing valve is opened, the pressure in the containing cavity is reduced after the water inlet valve is closed, and the water in the other water outlet branch pipe enters the containing cavity for backwashing through the water outlet, and the backwashed water is transported to other positions through the three -way joint, backwashing valve and backwashing main pipe.

Description

Technical Field

[0001] This application belongs to the field of wastewater filtration and treatment technology, and more specifically, relates to a fully automatic multi-media filter for wastewater treatment. Background Technology

[0002] A multi-media filter is a device that uses different types of media to filter wastewater. It contains multiple layers of filter media with decreasing particle size, allowing for step-by-step filtration of wastewater. Compared to single-media filters, it offers superior filtration efficiency. After a certain period of use, the filter media layers in a multi-media filter will trap and adsorb a certain amount of dirt and impurities, resulting in reduced water flow and deteriorated water quality. Therefore, it is necessary to backwash the filter periodically to remove dirt and impurities through the backwash pipe.

[0003] During backwashing of a multi-media filter, the water flows in the opposite direction. Under the impact of the water flow, the multiple layers of filter media arranged from top to bottom loosen and rise, washing away impurities attached to the surface of the filter media. The shortcomings of existing multi-media filters include: 1. A backwash water pump needs to be installed on the backwash pipeline to generate the backwash water flow, which results in high equipment costs; 2. Excessive backwash water flow can easily cause filter media layer disorder, while insufficient flow leads to long rinsing times and insufficient cleaning power. Utility Model Content

[0004] In view of the above-mentioned technical problems, this application provides a fully automatic multi-media filter for sewage treatment to solve the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a fully automatic multi-media filter for wastewater treatment, comprising: The tank body has multiple receiving cavities from top to bottom. Adjacent receiving cavities are separated from each other by partitions. The side wall of each receiving cavity near the upper part has a water inlet, and the side wall of each receiving cavity near the bottom has a water outlet. The water outlet unit includes multiple water outlet pipes that are correspondingly located at the water outlet, and a main water outlet pipe that is connected to the multiple water outlet pipes. Each water outlet pipe is equipped with a water outlet valve. Multiple filter units are arranged one-to-one in the receiving cavity. The filter units are located between the water inlet and the water outlet. Each filter unit includes multiple layers of filter screens arranged at intervals from top to bottom, and adjacent filter screens form a space for the filter medium. Multiple T-connectors are provided at the water inlet, one for each of them; The water inlet unit includes multiple water inlet pipes, each corresponding to one of the interfaces of the three-way connector, and a main water inlet pipe connected to the multiple water inlet pipes. Each water inlet pipe is equipped with a water inlet valve. The backwash unit includes multiple backwash branch pipes that are connected to the other interface of the three-way connector in a one-to-one correspondence, and a backwash main pipe that is connected to the multiple backwash branch pipes. Each backwash branch pipe is equipped with a backwash valve.

[0006] In one possible implementation, the main inlet pipe is equipped with a main inlet valve, and the main outlet pipe is equipped with a main outlet valve.

[0007] In one possible implementation, the filter unit has at least two accommodating spaces, wherein the filter media particle size in the upper accommodating space is larger than the filter media particle size in the lower accommodating space.

[0008] In one possible implementation, the outlet valve, the inlet valve, and the backwash valve are all electric valves.

[0009] In one possible implementation, the top of the tank is provided with an exhaust port.

[0010] In one possible implementation, the side wall of the receiving cavity is further provided with a feeding port, which corresponds one-to-one with the receiving space, and each feeding port is connected to the upper part of the corresponding receiving space; the side wall of the receiving cavity is further provided with a discharge port, which corresponds one-to-one with the receiving space, and each discharge port is connected to the lower part of the corresponding receiving space; both the feeding port and the discharge port are detachably provided with a blocking plate.

[0011] In one possible implementation, the filter screen is inclinedly disposed within the receiving cavity, and the plurality of filter screens are parallel to each other; the feed port and the discharge port are disposed opposite to each other.

[0012] In one possible implementation, the blocking plate is provided with a transparent observation window.

[0013] In one possible implementation, the inlet is connected to a water distributor located at the top of the receiving cavity.

[0014] In one possible implementation, the bottom of the tank is provided with support legs.

[0015] Compared with existing technologies, the fully automatic multi-media filter for wastewater treatment provided in this application has the following advantages: The fully automatic multi-media filter for wastewater treatment provided in this application includes a tank, an effluent unit, a filter unit, a T-joint, an inlet unit, and a backwash unit. The tank contains multiple independent receiving chambers, each connected to an inlet branch pipe, an effluent branch pipe, and a backwash branch pipe. The flow of these pipes is controlled by individual valves. During normal operation, the backwash valve is closed. Wastewater enters multiple inlet branch pipes through the main inlet pipe, then flows into the receiving chambers, passes through the filter unit, and finally enters the effluent branch pipe from the outlet, ultimately converging into the main effluent pipe. When a filter unit in one of the receiving chambers needs backwashing, the corresponding inlet valve is closed, and the backwash valve is opened. Closing the inlet valve reduces the pressure in that chamber, allowing water from other effluent branch pipes to enter the chamber through the outlet, creating a reverse flow to backwash the filter unit. The backwash water enters the backwash valve through the T-joint and is then transported to other locations through the main backwash pipe.

[0016] This application achieves backwashing of the filter unit by switching valves, and the use of electric valves enables automated backwashing. Generally, valves are cheaper than water pumps, thus reducing the overall manufacturing cost of the equipment. The filter unit uses multiple layers of filter screens to separate different types of filter media into their respective compartments, preventing media scattering even during strong backwashing water flow. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a fully automatic multi-media filter for wastewater treatment provided in one embodiment of this application. Figure 1 ; Figure 2 A diagram showing the water flow direction during filtration in a fully automatic multi-media filter for wastewater treatment provided in one embodiment of this application; Figure 3 A water flow diagram during backwashing of a fully automatic multi-media filter for wastewater treatment provided in one embodiment of this application; Figure 4 A schematic diagram of the structure of a fully automatic multi-media filter for wastewater treatment provided in one embodiment of this application. Figure 2 ; Figure 5 A schematic diagram of the structure of a fully automatic multi-media filter for wastewater treatment provided in another embodiment of this application; Figure 6 Internal cross-section of a fully automated multi-media filter for wastewater treatment provided in another embodiment of this application. Figure 1 ; Figure 7 Internal cross-section of a fully automated multi-media filter for wastewater treatment provided in another embodiment of this application. Figure 2 ; Explanation of reference numerals in the attached figures: 10. Tank body; 11. Baffle plate; 12. Inlet; 13. Outlet; 14. Feed port; 15. Discharge port; 16. Blocking plate; 17. Support leg; 18. Vent; 20. Water outlet unit; 21. Water outlet branch pipe; 22. Water outlet main pipe; 23. Water outlet valve; 24. Water outlet main valve; 30. Filtration unit; 31. Filter screen; 40. T-joint; 50. Water inlet unit; 51. Water inlet branch pipe; 52. Water inlet main pipe; 53. Water inlet valve; 54. Water inlet main valve; 60. Backwash unit; 61. Backwash branch pipe; 62. Backwash main pipe; 63. Backwash valve; Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] Please refer to the following: Figures 1 to 7 The following describes a fully automatic multi-media filter for wastewater treatment provided in an embodiment of this application.

[0025] Please see Figures 1 to 4 This application provides a fully automatic multi-media filter for wastewater treatment, including a tank 10, an outlet unit 20, a filter unit 30, a three-way connector 40, an inlet unit 50, and a backwash unit 60. The tank 10 has multiple accommodating cavities from top to bottom, with adjacent cavities separated by partitions 11. An inlet 12 is provided on the upper side wall of each cavity, and an outlet 13 is provided on the lower side wall. The outlet unit 20 includes multiple outlet pipes 21 corresponding to the outlets 13, and a main outlet pipe 22 communicating with the multiple outlet pipes 21. Each outlet pipe 21 is equipped with an outlet valve 23. Multiple filter units 30 are correspondingly disposed within the accommodating cavities, located between the inlet 12 and the outlet 13. Each filter unit 30 includes multiple layers spaced apart from top to bottom. Filter screen 31, with adjacent filter screens 31 forming a space for the filter medium; multiple T-connectors 40 are correspondingly provided at the water inlet 12; the water inlet unit 50 includes multiple water inlet pipes 51 that are correspondingly connected to one of the interfaces of the T-connectors 40, and a main water inlet pipe 52 that is connected to the multiple water inlet pipes 51, and each water inlet pipe 51 is provided with a water inlet valve 53; the backwash unit 60 includes multiple backwash branch pipes 61 that are correspondingly connected to the other interface of the T-connectors 40, and a main backwash pipe 62 that is connected to the multiple backwash branch pipes 61, and each backwash branch pipe 61 is provided with a backwash valve 63.

[0026] The outlet valve 23, inlet valve 53, and backwash valve 63 are all electrically operated valves, specifically common pipeline valves such as ball valves and gate valves. The automatic operation of these electrically operated valves can be controlled by a controller and a PLC control program. PLC is a common control method in the electromechanical field.

[0027] As needed, pressure sensors can be installed on the inlet pipe 51 and the outlet pipe 21 respectively. The pressure sensors are used to detect water pressure in real time.

[0028] The fully automatic multi-media filter for wastewater treatment provided in this application includes a tank 10, an outlet unit 20, a filter unit 30, a three-way connector 40, an inlet unit 50, and a backwash unit 60. The tank 10 has multiple independent cavities inside, each of which is connected to an inlet water pipe 51, an outlet water pipe 21, and a backwash water distribution pipe 61. The opening and closing of the pipelines are controlled by their respective valves.

[0029] like Figure 2 As shown, during normal operation, the backwash valve 63 is in the closed state. Wastewater enters multiple inlet branches 51 through the main inlet pipe 52, then enters the receiving cavity through the inlet branches 51, passes through the filter unit 30, and enters the outlet branch 21 through the outlet 13, and finally converges into the main outlet pipe 22.

[0030] like Figure 3 As shown, taking the uppermost filter unit 30 as an example, when the filter unit 30 located in the uppermost receiving cavity needs to be backwashed, the inlet valve 53 corresponding to the uppermost receiving cavity can be closed and the backwash valve 63 opened. After the inlet valve 53 is closed, the pressure in the receiving cavity decreases, and the water in other outlet pipes 21 will enter the receiving cavity through the outlet 13 and flow in the opposite direction to backwash the filter unit 30. The backwash water enters the tee connector 40 through the inlet 12, then enters the backwash valve 63, and is transported to other locations, such as sedimentation tanks and wastewater treatment systems, through the backwash main pipe 62.

[0031] This embodiment of the application achieves backwashing of the filter unit 30 by switching valves. Using electric valves enables automated backwashing. Generally, valves are cheaper than water pumps, thus reducing the overall manufacturing cost of the equipment. The filter unit 30 uses multiple layers of filter screens 31 to separate different types of filter media into their respective storage spaces, preventing media scattering even during backwashing when the water flow is strong.

[0032] The tank body 10 can be a stainless steel metal tank body 10, and the shape of the tank body 10 is usually cylindrical, but it can also be made into other shapes as needed. The bottom of the tank body 10 is provided with support legs 17 for supporting the tank body 10.

[0033] The filter screen 31 can be a stainless steel metal mesh plate, and the number of filter screens 31 is at least three layers to form at least two receiving spaces. The receiving spaces are used to fill the filter media, which can be common wastewater treatment filter media such as anthracite, activated carbon, quartz sand, and magnetite. The particle size of the multiple layers of filter media gradually decreases from top to bottom, and the mesh size of the filter screen 31 should ensure that the filter media does not leak out.

[0034] The filter screen 31 can be fixed to the inner wall of the receiving cavity by welding or screws, or it can be movably connected.

[0035] When the filter screen 31 is in the movable position, the inner wall of the receiving cavity 11 has an annular protrusion for supporting the filter screen 31, and the filter screen 31 is supported on the annular protrusion. If necessary, a vibration motor can be installed below the filter screen 31. The vibration motor is waterproof, and its vibrating end contacts the filter screen 31, vibrating up and down during operation. During backwashing, the vibration motor operates, applying up-and-down vibration force to the filter screen 31 and the filter media layer above it, which helps to dislodge impurities adhering to the surface of the filter media, improving the effectiveness of backwashing in cleaning impurities. Existing commercially available products can be used for the vibration motor; its specific structure and installation method will not be elaborated further.

[0036] Please see Figure 1 , Figure 2 , Figure 3 The main inlet pipe 52 is equipped with a main inlet valve 54, and the main outlet pipe 22 is equipped with a main outlet valve 24. The main inlet valve 54 and the main outlet valve 24 can be electric valves or manual valves.

[0037] Please see Figure 2 , Figure 3 , Figure 6 and Figure 7 In order to accommodate multiple layers of different filter media, the filter unit 30 has at least two accommodating spaces. The particle size of the filter media in the upper accommodating space is larger than that in the lower accommodating space, and the thickness of the filter media layer in the upper layer is smaller than that in the lower layer.

[0038] To allow air to escape from the tank 10 and prevent air lock, an exhaust port 18 is provided at the top of the tank 10. The exhaust port 18 is equipped with an exhaust pipe and an exhaust valve. A water distributor is connected to the water inlet 12, which is located at the top of the receiving cavity.

[0039] Water distributors, vent pipes, and vent valves can all be selected directly from existing products on the market, without any restrictions on their specific specifications or models.

[0040] Filter media need to be replaced after a period of use. The replacement cycle depends on the type of filter media and its consumption, and is generally 10-12 months. The replacement cycle varies depending on the type of filter media.

[0041] Please see Figure 5 , Figure 6 and Figure 7To facilitate the replacement of the filter medium, a feeding port 14 is provided on the side wall of the receiving cavity. Each feeding port 14 is connected to a corresponding receiving space, and each feeding port 14 is connected to the upper part of the corresponding receiving space. A discharge port 15 is also provided on the side wall of the receiving cavity. Each discharge port 15 is connected to a corresponding receiving space, and each discharge port 15 is connected to the lower part of the corresponding receiving space. Both the feeding port 14 and the discharge port 15 are detachably equipped with a blocking plate 16.

[0042] Please see Figure 5 , Figure 6 and Figure 7 The filter screen 31 is inclined in the receiving cavity, and multiple filter screens 31 are parallel to each other; the feed port 14 and the discharge port 15 are arranged opposite to each other, and the block plate 16 is detachably arranged in the feed port 14 or the discharge port 15.

[0043] The blocking plate 16 is closed during normal use. When adding filter media, the blocking plate 16 at the feed port 14 is opened, and the corresponding filter media is added into the accommodating space. When replacing the filter media, the blocking plates 16 at the feed port 14 and the discharge port 15 are opened, allowing the filter media to slide down the inclined filter screen 31 and be discharged. After emptying, the discharge port 15 is closed, and new filter media is added into the accommodating space through the feed port 14. Finally, the blocking plate 16 at the feed port 14 is closed to complete the replacement of the filter media.

[0044] The blocking plate 16 can be detachably installed at the feed port 14 or discharge port 15 by means of bolt connection or other means. In order to prevent leakage, a sealing gasket can be installed on the sealing contact surface.

[0045] To facilitate observation of the consumption of filter media inside the containment space, a transparent observation window can be provided on the side wall of the blocking plate 16 or the tank 10. The observation window is made of pressure-resistant glass.

[0046] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0047] 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 and improvements 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 fully automatic multi-media filter for wastewater treatment, characterized in that, include: The tank (10) has multiple accommodating cavities from top to bottom. The adjacent accommodating cavities are separated from each other by partitions (11). The accommodating cavities have inlets (12) on the side walls near the upper part and outlets (13) on the side walls near the bottom. The water outlet unit (20) includes a plurality of water outlet pipes (21) that are correspondingly provided at the water outlet (13), and a main water outlet pipe (22) that is connected to the plurality of water outlet pipes (21). Each water outlet pipe (21) is provided with a water outlet valve (23). Multiple filter units (30) are arranged in the receiving cavity in a corresponding manner. The filter unit (30) is located between the water inlet (12) and the water outlet (13). The filter unit (30) includes multiple layers of filter screens (31) arranged at intervals from top to bottom. The adjacent filter screens (31) form a space for the filter medium. Multiple T-connectors (40) are provided at the water inlet (12) in a corresponding manner. The water inlet unit (50) includes a plurality of water inlet pipes (51) that are connected one-to-one with one of the interfaces of the three-way connector (40), and a main water inlet pipe (52) that is connected to the plurality of water inlet pipes (51). Each water inlet pipe (51) is provided with a water inlet valve (53); and The backwash unit (60) includes a plurality of backwash water distribution pipes (61) that are connected to another interface of the three-way connector (40) in a one-to-one correspondence, and a backwash main pipe (62) that is connected to the plurality of backwash water distribution pipes (61). Each backwash water distribution pipe (61) is provided with a backwash valve (63).

2. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The main inlet pipe (52) is equipped with a main inlet valve (54), and the main outlet pipe (22) is equipped with a main outlet valve (24).

3. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The filter unit (30) has at least two accommodating spaces, wherein the particle size of the filter medium in the upper accommodating space is larger than that in the lower accommodating space.

4. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The outlet valve (23), the inlet valve (53), and the backwash valve (63) are all electric valves.

5. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The top of the tank (10) is provided with an exhaust port (18).

6. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The side wall of the receiving cavity is also provided with a feeding port (14), which corresponds one-to-one with the receiving space. Each feeding port (14) is connected to the upper part of the corresponding receiving space. The side wall of the receiving cavity is also provided with a discharge port (15), which corresponds one-to-one with the receiving space. Each discharge port (15) is connected to the lower part of the corresponding receiving space. Both the feeding port (14) and the discharge port (15) are detachably provided with a blocking plate (16).

7. The fully automatic multi-media filter for wastewater treatment according to claim 6, characterized in that, The filter screen (31) is inclinedly disposed in the receiving cavity, and the plurality of filter screens (31) are parallel to each other; the feeding port (14) and the discharge port (15) are disposed opposite to each other.

8. The fully automatic multi-media filter for wastewater treatment according to claim 6, characterized in that, The blocking plate (16) is provided with a transparent observation window.

9. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The inlet (12) is connected to a water distributor, which is located at the top of the receiving cavity.

10. The fully automatic multi-media filter for wastewater treatment according to claim 1, characterized in that, The bottom of the tank (10) is provided with support legs (17).

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