Filtering device of denitrification biological filter

Abstract

The utility model discloses a filter device of a denitrification biological filter, which structurally comprises a main body unit comprising a filter main body, a filter plate is arranged in the filter main body, and a filter material layer is arranged at the top of the filter plate; and the backflow assembly comprises a three-way pipe. During use, after sewage is filtered by the filter material layer in the filter tank main body, the filtered clear water is discharged through the water outlet pipe, the water pressure in the water outlet pipe is detected through the pressure sensor, and when the hydraulic load is too small, a backflow measure is taken, namely the electromagnetic valve is started to convey the clear water back into the filter tank main body through the backflow pipe; the stirring assembly promotes uniform mixing of backflow water and sewage, the backflow water is used for diluting the pollutant concentration in the sewage, the water flow speed is adjusted, the valve opening degree of the electromagnetic valve is controlled through the numerical value of the pressure sensor, the backflow proportion can be controlled, and then the flow speed of the sewage passing through the filtering material layer can be adjusted according to the actual situation. Therefore, the denitrification efficiency of the device is improved, and the head loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biological filters, in particular to a denitrification biological filter device. Background Art

[0002] The denitrifying biofilter is a treatment unit that combines biological denitrification with filtration. It is designed to efficiently remove nitrates and suspended solids from wastewater through biofilm and physical filtration. The denitrifying biofilter utilizes quartz sand of a specific size and shape as its medium. This medium not only provides an excellent attachment environment for denitrifying microorganisms but also effectively prevents penetration and cross-flow through its large specific surface area and moderate particle size. Through specific biological and physical processes, the denitrifying biofilter effectively removes nitrate nitrogen and suspended solids from wastewater. Its deep-bed filter technology and various advantages have led to its widespread use in wastewater treatment plant upgrades.

[0003] A denitrifying biological filter filtration device disclosed in publication number CN217051955U, although the utility model can quickly and effectively filter impurities in sewage by utilizing a driving mechanism and a scraper assembly, it can prevent impurities carried by sewage from entering the main body of the denitrifying biological filter, and conveniently discharge the filtered impurities out of the filter box, and the driving mechanism and the stirring mechanism can fully stir the sewage, which can make the contact between the sewage and the denitrifying bacteria more uniform and comprehensive, thereby improving the effect of sewage denitrification treatment, and solves the problems of existing denitrifying biological filter sewage treatment equipment in use, which does not have the function of filtering and removing impurities carried in the sewage and does not have the function of stirring the sewage.

[0004] However, this utility model makes it difficult to control the flow rate of wastewater through the filter area, which can affect the denitrification efficiency and increase head loss. For example, if the wastewater flow rate is too fast, the nitrate will not have enough contact time with the filter media, thus affecting the denitrification reaction. If the wastewater flow rate is too slow, the accumulation of suspended solids and particulate matter in the filter media will be accelerated, resulting in increased head loss and the need for more frequent backwashing. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, in order to solve the above technical problems, the present invention provides the following technical solutions: a denitrification biological filter filtration device, the denitrification biological filter filtration device comprising:

[0007] The main unit comprises a filter tank body, a filter plate is arranged in the filter tank body, and a filter material layer is arranged on the top of the filter plate;

[0008] A reflux assembly includes a tee pipe, the tee pipe is fixedly installed at the water outlet, a water outlet pipe is provided on one side of the tee pipe, a pressure sensor is provided on the water outlet pipe, and a reflux pipe is provided at the bottom of the tee pipe;

[0009] The stirring assembly includes a servo motor, the output end of which drives the first rotating rod to rotate, the surface of the first rotating rod is rotatably connected to the first bevel gear and the second bevel gear, the surface of the first bevel gear is meshed with the third bevel gear, and the surface of the third bevel gear is meshed with the fourth bevel gear.

[0010] As a preferred solution of the denitrifying biological filter device of the utility model, a water inlet pipe is fixedly installed on one side of the bottom of the filter body, and water inlets are provided on both the water inlet pipe and the return pipe.

[0011] As a preferred solution of the denitrifying biological filter device of the utility model, a solenoid valve is further provided on the reflux pipe.

[0012] As a preferred solution of the denitrification biological filter device of the present invention, the surface of the second bevel gear is meshed with a fifth bevel gear, and the bottom of the fifth bevel gear is rotatably connected to a second stirring frame.

[0013] As a preferred solution of the denitrification biological filter device of the present invention, the center of the third bevel gear is rotatably connected to a second rotating rod, and the second rotating rod is rotatably connected to the filter plate.

[0014] As a preferred solution of the denitrification biological filter device of the present invention, the bottom of the fourth bevel gear is rotatably connected to a first stirring frame, and the first stirring frame is rotatably installed below the filter plate.

[0015] Beneficial effects of the utility model:

[0016] During use, after the sewage is filtered by the filter material layer in the filter tank body, the filtered clean water is discharged through the outlet pipe. The water pressure in the outlet pipe is detected by the pressure sensor. When the hydraulic load is too small, the backflow measure is taken, that is, the solenoid valve is started to transport the clean water back to the filter tank body through the backflow pipe. The stirring component promotes the uniform mixing of the backflow water and sewage, and the pollutant concentration in the sewage is diluted by the backflow water. The water flow rate is adjusted, and the valve opening of the solenoid valve is controlled by the numerical value of the pressure sensor to control the backflow ratio. Then, the flow rate of the sewage through the filter material layer can be adjusted according to the actual situation, thereby increasing the denitrification efficiency of the device and reducing the head loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 It is a schematic diagram of the overall structure of the denitrifying biological filter device of the present invention.

[0019] Figure 2 This is a schematic structural diagram of the reflux component of the denitrifying biological filter device of the present invention.

[0020] Figure 3 This is a structural schematic diagram of the stirring assembly of the denitrifying biological filter device of the present utility model.

[0021] Figure 4 This is a schematic diagram of the overall horizontal cross-sectional structure of the denitrifying biological filter device of the present invention.

[0022] Figure 5 It is a schematic diagram of the overall longitudinal cross-sectional structure of the denitrifying biological filter device of the present invention.

[0023] In the figure: 100, main unit; 101, filter tank body; 1011, water inlet pipe; 1012, water inlet; 102, filter plate; 103, filter material layer;

[0024] 200, reflux assembly; 201, tee pipe; 202, outlet pipe; 203, pressure sensor; 204, reflux pipe; 2041, solenoid valve;

[0025] 300, stirring assembly; 301, servo motor; 302, first rotating rod; 303, first bevel gear; 304, second bevel gear; 3041, fifth bevel gear; 3042, second stirring frame; 305, third bevel gear; 3051, second rotating rod; 306, fourth bevel gear; 3061, first stirring frame. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] Example 1

[0031] Reference Figure 1-5 , which is the first embodiment of the present utility model, provides a denitrification biological filter device, which includes:

[0032] The main unit 100 includes a filter body 101, a filter plate 102 is provided in the filter body 101, and a filter material layer 103 is provided on top of the filter plate 102. During use, sewage delivered through the water inlet pipe 1011 enters the filter body 101 through the water inlet 1012, passes through the filter plate 102, and is filtered by the filter material layer 103, effectively removing nitrates and suspended solids in the sewage. The filtered water is then discharged through the outlet pipe 202;

[0033] The reflux assembly 200 includes a tee 201, which is fixedly installed at the water outlet. An outlet pipe 202 is provided on one side of the tee 201. A pressure sensor 203 is provided on the outlet pipe 202. A return pipe 204 is provided at the bottom of the tee 201. During use, the water pressure in the outlet pipe 202 is detected by the pressure sensor 203. When the hydraulic load is too low, a reflux measure is taken, that is, the solenoid valve 2041 is activated to allow clean water to be transported back to the filter tank body 101 through the return pipe 204. The return water dilutes the pollutant concentration in the sewage and adjusts the water flow rate. The valve opening of the solenoid valve 2041 is controlled by the value of the pressure sensor 203 to control the reflux ratio.

[0034] The stirring assembly 300 includes a servo motor 301. The output end of the servo motor 301 drives the first rotating rod 302 to rotate. The surface of the first rotating rod 302 is connected to the first bevel gear 303 and the second bevel gear 304. The surface of the first bevel gear 303 is meshed with the third bevel gear 305. The surface of the third bevel gear 305 is meshed with the fourth bevel gear 306. During use, the servo motor 301 is started to drive the first rotating rod 302 to rotate, thereby driving the first bevel gear 303 and the second bevel gear 304 to rotate. The first bevel gear 303 drives the third bevel gear 306. The bevel gear 305 rotates, thereby driving the fourth bevel gear 306 to rotate, and the second bevel gear 304 drives the fifth bevel gear 3041 to rotate, and the first stirring frame 3061 and the second stirring frame 3042 are driven to rotate synchronously through the fourth bevel gear 306 and the fifth bevel gear 3041. The rotation of the third bevel gear 305 can also drive the second rotating rod 3051 to rotate, and the second rotating rod 3051 can drive the first stirring frame 3061 and the second stirring frame 3042 on the other side to rotate, so that every corner in the filter body 101 is stirred at the same time, further promoting the mixing of return water and sewage.

[0035] Furthermore, a water inlet pipe 1011 is fixedly installed on one side of the bottom of the filter tank body 101. A water inlet 1012 is provided on the water inlet pipe 1011 and the return pipe 204. The sewage is transported to the filter tank body 101 through the water inlet pipe 1011 and discharged through the water inlet 1012.

[0036] Furthermore, a solenoid valve 2041 is provided on the return pipe 204 . When the solenoid valve 2041 is activated, the clean water at the water outlet can enter the return pipe 204 , and the clean water can be re-input into the filter tank body 101 through the return pipe 204 .

[0037] Furthermore, a fifth bevel gear 3041 is meshed with the surface of the second bevel gear 304 , and the bottom of the fifth bevel gear 3041 is rotatably connected to the second stirring frame 3042 . The rotation of the fifth bevel gear 3041 is driven by the second bevel gear 3044 , thereby driving the second stirring frame 3042 to rotate.

[0038] Furthermore, the center of the third bevel gear 305 is rotatably connected to the second rotating rod 3051 , which is rotatably connected to the filter plate 102 . The third bevel gear 305 drives the second rotating rod 3051 to rotate, causing another set of first stirring frames 3061 to rotate synchronously.

[0039] Furthermore, the bottom of the fourth bevel gear 306 is rotatably connected to the first stirring frame 3061, and the first stirring frame 3061 is rotatably installed below the filter plate 102. The fourth bevel gear 306 drives the first stirring frame 3061 to rotate, stirring the sewage below the filter plate 102, so that the sewage and return water are fully mixed.

[0040] During use, sewage is first transported through the water inlet pipe 1011 and enters the filter tank body 101 through the water inlet 1012. After passing through the filter plate 102, it is filtered by the filter material layer 103, effectively removing nitrates and suspended solids in the sewage. The filtered water is then discharged through the outlet pipe 202.

[0041] Then, the pressure sensor 203 detects the water pressure in the water pipe 202. When the hydraulic load is too low, a backflow measure is taken, that is, the solenoid valve 2041 is activated to allow clean water to be transported back to the filter tank body 101 through the backflow pipe 204. The backflow water dilutes the concentration of pollutants in the sewage and adjusts the water flow rate. The valve opening of the solenoid valve 2041 is controlled by the value of the pressure sensor 203 to control the backflow ratio.

[0042] Finally, start the servo motor 301 to drive the first rotating rod 302 to rotate, which in turn drives the first bevel gear 303 and the second bevel gear 304 to rotate. The first bevel gear 303 drives the third bevel gear 305 to rotate, which in turn drives the fourth bevel gear 306 to rotate. The second bevel gear 304 drives the fifth bevel gear 3041 to rotate. The first stirring frame 3061 and the second stirring frame 3042 are driven to rotate synchronously through the fourth bevel gear 306 and the fifth bevel gear 3041. The rotation of the third bevel gear 305 can also drive the second rotating rod 3051 to rotate. The second rotating rod 3051 can drive the first stirring frame 3061 and the second stirring frame 3042 on the other side to rotate, so that each corner of the filter tank body 101 is stirred at the same time, further promoting the mixing of return water and sewage.

[0043] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A denitrification biological filter device, characterized in that: include, The main unit (100) comprises a filter tank body (101), a filter plate (102) is arranged in the filter tank body (101), and a filter material layer (103) is arranged on the top of the filter plate (102); A reflux assembly (200) comprises a tee (201), wherein the tee (201) is fixedly installed at the water outlet, a water outlet pipe (202) is provided on one side of the tee (201), a pressure sensor (203) is provided on the water outlet pipe (202), and a reflux pipe (204) is provided at the bottom of the tee (201); The stirring assembly (300) comprises a servo motor (301), wherein the output end of the servo motor (301) is driven to be connected to a first rotating rod (302) for rotation, the surface of the first rotating rod (302) is rotatably connected to a first bevel gear (303) and a second bevel gear (304), the surface of the first bevel gear (303) is meshed with a third bevel gear (305), and the surface of the third bevel gear (305) is meshed with a fourth bevel gear (306).

2. The denitrifying biological filter device according to claim 1, wherein: A water inlet pipe (1011) is fixedly installed on one side of the bottom of the filter tank body (101), and a water inlet (1012) is provided on both the water inlet pipe (1011) and the return pipe (204).

3. The denitrifying biological filter device according to claim 1, wherein: The return pipe (204) is also provided with a solenoid valve (2041).

4. The denitrifying biological filter device according to claim 1, wherein: The surface of the second bevel gear (304) is meshed with a fifth bevel gear (3041), and the bottom of the fifth bevel gear (3041) is rotatably connected to a second stirring frame (3042).

5. The denitrifying biological filter device according to claim 1, wherein: The center of the third bevel gear (305) is rotatably connected to a second rotating rod (3051), and the second rotating rod (3051) is rotatably connected inside the filter plate (102).

6. The denitrifying biological filter device according to claim 1, wherein: The bottom of the fourth bevel gear (306) is rotatably connected to a first stirring frame (3061), and the first stirring frame (3061) is rotatably installed below the filter plate (102).

Images