Filter material dirt chemical cleaning system for shallow efficient filter tank

Abstract

The utility model discloses a filter material dirt chemical cleaning system for a shallow efficient filter tank. The filter material dirt chemical cleaning system comprises a cleaning unit, an air blowing unit and a rectifying unit, the cleaning unit comprises a chemical agent storage tank, a chemical cleaning pump, a chemical cleaning pipeline, a chemical cleaning control valve, a filter tank backwashing water inlet pipeline, a clean water tank, a backwashing pump and a clean water pipe; the air blowing unit comprises a low-pressure air pipe and an air blower which are mounted on two side walls in the filter tank, and the low-pressure air pipe is connected with the air blower through a pipeline; the rectification unit comprises a water collection and distribution system grid plate installed below the sand layer. According to the scheme, operation is easy and convenient, and efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment equipment, in particular to a chemical cleaning system for filter material dirt used in shallow high-efficiency filter tanks. Background Art

[0002] Generally, when filter media is contaminated by dirt and other pollutants, excessive addition of PAC or PAM, or scaling caused by the addition of lime in the previous process, the filter media's filtration capacity will be seriously affected. In this case, it is usually necessary to completely replace the filter media to solve the problem and restore the filter's filtration capacity. However, replacing the filter media to restore the filter's filtration capacity is a complicated process and inefficient. Utility Model Content

[0003] In view of the technical problems pointed out in the above background technology, the purpose of the present utility model is to provide a chemical cleaning system for filter media dirt used in shallow high-efficiency filter tanks.

[0004] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0005] A chemical cleaning system for filter media dirt used in shallow high-efficiency filter tanks, comprising a cleaning unit, an air blowing unit, and a rectifying unit;

[0006] The cleaning unit includes a chemical storage tank, a chemical cleaning pump and a chemical cleaning pipeline, a chemical cleaning control valve, a filter backwashing water inlet pipeline, a clean water tank, a backwash pump, and a clean water pipe; the chemical storage tank is connected to the first end of the filter backwashing water inlet pipeline via a chemical cleaning pipeline provided with a chemical cleaning pump, and the chemical cleaning control valve is provided on the chemical cleaning pipeline; the backwash pump is installed in the clean water tank, and the backwash pump is connected to the first end of the filter backwashing water inlet pipeline via a clean water pipe, and the second end of the filter backwashing water inlet pipeline extends into the filter;

[0007] The blowing unit includes a low-pressure air pipe and a blower installed on both side walls of the filter tank. The low-pressure air pipe is connected to the blower through a pipeline. The low-pressure air pipe is a horizontal perforated pipe with a plurality of air outlet holes evenly arranged thereon. The air outlet holes are arranged obliquely downward facing the sand layer. The low-pressure air pipe is connected to the blower through an air pipe.

[0008] The rectifier unit includes a water collection and distribution system grid plate installed below the sand layer. The water collection and distribution system grid plate is provided with a plurality of evenly spaced square grids. Each of the square grids is in the shape of an inverted pyramid with a larger top and a smaller bottom, and a water distribution hole is provided in the middle of each square grid.

[0009] Wherein, the chemical cleaning pumps are two connected in parallel.

[0010] Wherein, the water collection and distribution system grid plate is installed on the water collection and distribution system by bolts.

[0011] Wherein, the water collection and distribution system is connected to the pool bottom through a bolt water collection and distribution system.

[0012] Wherein, the water in the clear water tank is the water discharged from the filter tank.

[0013] Wherein, the chemical cleaning pump, chemical cleaning control valve, backwash pump and blower are all connected to the PLC controller.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When in use, the chemical cleaning pump is operated, the chemical cleaning control valve is opened, and the cleaning agent is transported to the filter backwash inlet pipe through the chemical cleaning pipeline. The backwash pump and the chemical cleaning pump are operated at the same time, and the filter outlet water in the clean water tank is transported to the filter backwash inlet pipe through the clean water pipe, so that the water and the chemical cleaning agent are fully mixed and enter the filter body. In the main body of the filter tank, the filter material (sand layer) is first soaked for a fixed time, and then the backwash pump and blower are operated to make the filter material undergo multiple gas-liquid two-phase scrubbing, and finally after a large flow of backwashing, the cleaning waste liquid is discharged, thereby oxidizing and removing pollutants such as dirt, flocculants or lime attached to the filter material, regenerating the filter material, and restoring the filtration capacity of the filter material layer. The application scheme is simple to operate and more efficient. In addition, the multiple water distribution holes evenly distributed on the grid plate of the water collection and distribution system are used to significantly reduce the water flow section, and the flow rate of chemical agents and water flushing increases accordingly. At the same time, through the rectification effect of the grid with a gradually changing shape, a jet cross-flow is generated for the entire sand layer, thereby increasing the stirring and scrubbing effect between the filter materials, enhancing the contact reaction efficiency of the chemical agent soaking and the flushing intensity, and the effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the cleaning system provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of the water collection and distribution system grid plate provided in an embodiment of the present application;

[0018] In the figure, there are chemical storage tank 1, chemical cleaning pump 2, chemical cleaning pipeline 3, chemical cleaning control valve 4, filter backwash water inlet pipeline 5, clean water tank 6, backwash pump 7, clean water pipe 8, low-pressure air pipe 9, and water distribution system grid plate 10. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0023] like Figure 1-Figure 2 The structure shown is an embodiment of the present application.

[0024] This embodiment provides a chemical cleaning system for filter media dirt used in shallow high-efficiency filter tanks, comprising a cleaning unit, a blast unit, and a rectifying unit;

[0025] The cleaning unit includes a chemical storage tank 1, a chemical cleaning pump 2, a chemical cleaning pipeline 3, a chemical cleaning control valve 4, a filter backwashing water inlet pipeline 5, a clean water tank 6, a backwash pump 7, and a clean water pipe 8; the chemical storage tank 1 is connected to the first end of the filter backwashing water inlet pipeline 5 through the chemical cleaning pipeline 3 provided with the chemical cleaning pump 2, and the chemical cleaning control valve 4 is provided on the chemical cleaning pipeline 3; the backwash pump 7 is installed in the clean water tank 6, and the backwash pump 7 is connected to the first end of the filter backwashing water inlet pipeline 5 through the clean water pipe 8, and the second end of the filter backwashing water inlet pipeline 5 extends into the filter;

[0026] The blowing unit includes a low-pressure air pipe 9 and a blower (not shown) installed on the inner wall of the filter tank. The low-pressure air pipe is connected to the blower through a pipeline. The low-pressure air pipe 9 is a transverse perforated pipe with a plurality of air outlet holes evenly arranged thereon. The air outlet holes are arranged obliquely downward facing the sand layer. The low-pressure air pipe 9 is connected to the blower through an air pipe.

[0027] The rectifier unit includes a water collection and distribution system grid plate 10 installed below the sand layer. The water collection and distribution system grid plate 10 is provided with a plurality of evenly spaced square grids. Each of the square grids is in the shape of an inverted pyramid with a larger top and a smaller bottom, and a water distribution hole is provided in the middle of each square grid.

[0028] When in use, the chemical cleaning pump is operated, the chemical cleaning control valve is opened, and the cleaning agent is transported to the filter backwash inlet pipe through the chemical cleaning pipeline. The backwash pump and the chemical cleaning pump are operated at the same time, and the filter outlet water in the clean water tank is transported to the filter backwash inlet pipe through the clean water pipe, so that the water and the chemical cleaning agent are fully mixed and enter the filter body. In the main body of the filter tank, the filter material (sand layer) is first soaked for a fixed time, and then the backwash pump and blower are operated to make the filter material undergo multiple gas-liquid two-phase scrubbing. Finally, after a large flow of backwashing, the cleaning waste liquid is discharged, thereby oxidizing and shedding pollutants such as dirt, flocculants or lime attached to the filter material, regenerating the filter material and restoring the filtration capacity of the filter material layer; in addition, the multiple water distribution holes evenly distributed on the grid plate of the water collection and distribution system significantly reduce the water flow section, and the flow rate of chemical agents and water flushing increases accordingly. At the same time, the rectification effect of the grid with a gradually changing shape generates a jet cross flow on the entire sand layer, thereby increasing the stirring and scrubbing effect between the filter materials, enhancing the contact reaction efficiency of the chemical agent soaking and the flushing intensity, and achieving better results.

[0029] In addition, the chemical cleaning pumps 2 are two connected in parallel, one main and one backup. When in use, one is turned on and if a failure occurs, the other can be quickly replaced.

[0030] In addition, the water collection and distribution system grid plate 10 is installed on the water collection and distribution system by bolts.

[0031] It should be noted that a chemical cleaning agent is placed in the chemical agent storage tank, and the chemical cleaning agent can be different types of chemical cleaning agents such as sodium hypochlorite and oxalic acid.

[0032] It should be noted that the water in the clear water tank is the water discharged from the filter tank.

[0033] It should be noted that the water distribution system grid plate is located below the sand layer and is connected to the water distribution system as a whole by bolts. The water distribution system is fixed to the pool bottom by chemical bolts. The water distribution system grid plate is provided with multiple square grids, each of which is in the shape of an inverted pyramid. Each square corresponds to a water distribution hole. The multiple water distribution holes evenly distributed on the plate significantly reduce the water flow cross-section, and the flow rate of chemical agents and water flushing increases accordingly. At the same time, the rectifying effect of the grid with a gradually changing shape generates a jet cross-flow for the entire sand layer, and the flow rate can reach more than 1.5m / s, thereby increasing the stirring and scrubbing effect between the filter materials and enhancing the chemical agent immersion contact reaction efficiency and flushing intensity.

[0034] It should be noted that the low-pressure air pipes are located on both sides of the tank body, above the sand layer. They serve as air diffusion pipes and are connected to the blower via an air inlet line, which provides the air source. The low-pressure air is arranged horizontally as a perforated pipe, with the air outlet positioned diagonally downward facing the sand layer. During the chemical cleaning process, the sand layer surface is scrubbed with gas phase while the chemical and water are flushed. This gas-liquid two-phase mixing and scrubbing enhances the efficiency of the chemical-sand immersion contact reaction and the chemical cleaning effect.

[0035] In addition, the chemical cleaning pump 2, chemical cleaning control valve 4, backwash pump 7, and blower are all connected to the PLC controller. It should be noted that the above electronic components are all purchased from outside.

[0036] It should be noted that the technologies not described in detail in this application are all based on existing technologies, and this application does not involve improvements to the methods.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical cleaning system for filter media dirt used in shallow high-efficiency filter tanks, characterized in that: It includes a cleaning unit, a blowing unit and a rectifying unit; The cleaning unit comprises a chemical agent storage tank (1), a chemical cleaning pump (2), a chemical cleaning pipeline (3), a chemical cleaning control valve (4), a filter backwashing water inlet pipeline (5), a clean water tank (6), a backwash pump (7), and a clean water pipe (8); the chemical agent storage tank (1) is connected to the first end of the filter backwashing water inlet pipeline (5) via the chemical cleaning pipeline (3) provided with the chemical cleaning pump (2), and the chemical cleaning control valve (4) is provided on the chemical cleaning pipeline (3); the backwash pump (7) is installed in the clean water tank (6), the backwash pump (7) is connected to the first end of the filter backwashing water inlet pipeline (5) via the clean water pipe (8), and the second end of the filter backwashing water inlet pipeline (5) extends into the filter; The air blowing unit comprises a low-pressure air pipe (9) and a blower installed on both side walls of the filter tank, wherein the low-pressure air pipe is connected to the blower through a pipeline, and the low-pressure air pipe (9) is a transverse perforated pipe with a plurality of air outlet holes evenly arranged thereon, wherein the air outlet holes are arranged obliquely downward facing the sand layer, and the low-pressure air pipe (9) is connected to the blower through an air pipe; The rectification unit comprises a water collection and distribution system grid plate (10) installed below the sand layer, wherein the water collection and distribution system grid plate (10) is provided with a plurality of evenly spaced square grids, each of the square grids is in the shape of an inverted pyramid with a larger top and a smaller bottom, and a water distribution hole is provided in the middle of each square grid.

2. A chemical cleaning system for filter media dirt for shallow high-efficiency filter according to claim 1, characterized in that: The chemical cleaning pumps (2) are two connected in parallel.

3. The chemical cleaning system for filter media dirt for shallow high-efficiency filter according to claim 1, characterized in that: The water collection and distribution system grid plate (10) is mounted on the water collection and distribution system by means of bolts.

4. A chemical cleaning system for filter media dirt for shallow high-efficiency filter according to claim 3, characterized in that: The water collection and distribution system is connected to the pool bottom through a bolt water collection and distribution system.

5. The chemical cleaning system for filter media dirt for shallow high-efficiency filter according to claim 1, characterized in that: The water in the clean water tank is the effluent from the filter tank.

6. A chemical cleaning system for filter media dirt for shallow high-efficiency filter according to claim 1, characterized in that: The chemical cleaning pump (2), chemical cleaning control valve (4), backwash pump (7) and blower are all connected to a PLC controller.

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