Tap water purification treatment backwashing device

Abstract

The utility model relates to the technical field of tap water treatment, in particular to a tap water purification treatment backwashing device which comprises a filter tank filled with a filter material layer, and a long-handle filter head is arranged on a filter plate in the filter tank; the filter further comprises an inserting piece and a driving mechanism, the inserting piece is vertically installed on the filter plate, the inserting piece comprises a fixing column installed on the filter plate and an inserting rod in sealed sliding connection with the fixing column, and the inserting piece is used for being inserted into a filter material layer to assist in loosening the filter material, so that attached impurities among filter material particles are easier to fall off; according to the utility model, the insertion rod is inserted into the filter layer, so that backwashing water flow can act on the middle part of the filter layer more directly, the filter layer is loosened, impurities attached among filter material particles are easier to fall off, impurities doped in the deep part of the filter layer can be dispersed and taken away, and the filter efficiency is improved. The flushing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of tap water treatment technology, and in particular to a backwashing device for tap water purification treatment. Background Technology

[0002] During the water purification process, filter media (such as sand filters and activated carbon) intercept suspended solids, colloids, organic matter, and other impurities in the water. Over time, these impurities gradually clog the pores of the filter media, leading to increased filtration resistance and reduced filtration efficiency. Backwashing, where the water flow direction is reversed compared to normal filtration, removes impurities from the surface and interior of the filter media, restoring its porosity and allowing it to regain its effective filtration capacity, thus ensuring the stability of the water purification effect.

[0003] As filtration continues, impurities gradually accumulate inside the filter media, affecting its filtration performance and service life. Currently, common filter media backwashing technologies mainly rely on water or air-water combined backwashing. When backwashing with water alone, the water flow is difficult to penetrate deep into the filter media, resulting in poor cleaning of deep impurities. Although air-water combined backwashing provides some improvement, it cannot completely remove impurities trapped inside the filter media, leading to poor backwashing performance.

[0004] Based on the above situation, it is necessary to design a tap water purification and backwashing device to solve the above problems. Utility Model Content

[0005] This invention provides a backwashing device for purifying tap water, which solves the problem in the prior art that the impurities trapped inside the filter media are not thoroughly cleaned during backwashing.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A tap water purification backwashing device includes a filter tank filled with a filter media layer, and a long-handled filter head is provided on the filter plate inside the filter tank; it also includes an insert and a driving mechanism. The insert is vertically installed on the filter plate and includes a fixed column installed on the filter plate and an insert rod that is slidably and sealingly connected to the fixed column. The insert is used to insert into the filter media layer to help loosen the filter media and make it easier for impurities attached between the filter media particles to fall off. The driving mechanism is used to drive the insert rod to intermittently insert into the filter media layer.

[0008] Preferably, the driving mechanism includes an air supply pipe connected to an external compressed air source and an electromagnetic pulse valve disposed on the air supply pipe, and a distribution pipe is provided between the fixed column and the air supply pipe.

[0009] Preferably, the upper end of the insertion rod is provided with an insertion part, and the diameter of the insertion part gradually increases from top to bottom.

[0010] Preferably, the outer wall of the insertion rod is provided with multiple sets of flow guiding grooves along its axial direction.

[0011] Preferably, there are multiple inserts, and each insert corresponds to a long-handled filter head.

[0012] Preferably, sealing connectors are provided at the connection between the fixed column and the filter plate, and at the connection between the fixed column and the insertion rod.

[0013] The beneficial effects of this utility model are: by inserting the insertion rod into the filter layer, the backwash water flow can act more directly on the middle of the filter layer, loosening the filter layer and making it easier for the impurities attached between the filter media particles to fall off, which helps to disperse and remove impurities mixed deep in the filter layer and improve the rinsing effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A cross-sectional structural schematic diagram provided for this utility model;

[0016] Figure 2 A schematic diagram of the connection structure between the insert and the drive mechanism provided by this utility model;

[0017] Figure 3 A schematic diagram of the insert structure provided by this utility model.

[0018] In the diagram, 1 is the filter bed; 11 is the filter plate; 12 is the long-handled filter head; 2 is the insert; 21 is the fixing column; 22 is the insertion rod; 23 is the insertion part; 24 is the flow guide groove; 3 is the air supply pipe; 31 is the electromagnetic pulse valve; 32 is the air distribution pipe; and 4 is the sealing connector. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] Reference Figures 1-3As shown, the tap water purification backwashing device includes a filter tank 1 filled with a filter media layer. A long-handled filter head 12 is installed on the filter plate 11 inside the filter tank 1. During backwashing, the combined air-water or single-water backwashing water and airflows pass through the long-handled filter head 12 from bottom to top. The long-handled filter head 12 can evenly distribute the backwashing water and air throughout the entire filter layer, causing agitation and cleaning of the filter media. However, the force of the water and airflow weakens when it enters the depths of the filter layer during backwashing, resulting in poor cleaning effect on the deeper parts of the filter layer. Therefore, this solution vertically installs a long-handled filter head 12 on the filter plate 11. Insert 2 includes a fixed post 21 mounted on the filter plate 11 and an insertion rod 22 that is slidably connected to the fixed post 21. The insertion rod 22 is used to insert into the filter media layer to help loosen the filter media, so that the impurities attached between the filter media particles can be more easily removed. When the insertion rod 22 is inserted into the filter media layer, it generates instantaneous pressure change and impact force, thereby effectively loosening the impurities that are tightly attached inside the filter media layer, breaking the adsorption balance between the impurities and the filter media, creating favorable conditions for the discharge of impurities, and also providing a driving mechanism for intermittently inserting the insertion rod 22 into the filter media layer.

[0021] Specifically, the drive mechanism includes an air supply pipe 3 connected to an external compressed air source and an electromagnetic pulse valve 31 mounted on the air supply pipe 3. A distribution pipe 32 connects the fixed column 21 to the air supply pipe 3. During use, one end of the air supply pipe 3 is tightly connected to the external compressed air source through a standard sealing joint to ensure no air leakage at the connection point and to guarantee a stable input of compressed air. The air supply pipe 3 can be reasonably routed around the perimeter of the filter tank 1 and fixed to the wall or a special bracket using pipe clamps or other devices to prevent the pipe from shaking or shifting due to airflow impact during device operation. The model of the electromagnetic pulse valve 31 is selected according to the system pressure, flow rate, and required pulse frequency. For example, a suitable working pressure range of 0.4-0.8 MPa and a pulse frequency of up to 10 Hz can be selected. When the filter tank 1 needs backwashing after a period of use, the operator starts the backwashing program through the operation panel. After receiving the start signal, the PLC control system controls the electromagnetic pulse valve 31 to open according to the preset pulse mode. Compressed air enters the insert rod through the air supply pipe 3 and the air distribution pipe 32, pushing the insert rod to be inserted into the filter media in a pulse. The impact force and instantaneous pressure change generated by the pulse insertion can more effectively loosen the impurities inside the filter media and achieve the removal of impurities from the filter media.

[0022] Reference Figure 3As shown, the upper end of the insertion rod 22 is provided with an insertion part 23. The diameter of the insertion part 23 gradually increases from top to bottom. The insertion rod 22 with the same diameter is slidably connected to the fixed post 21. When the insertion rod with the gradually decreasing diameter is inserted into the filter layer, its tip first contacts the filter layer, reducing the resistance during insertion and reducing the degree of compression and disturbance to the filter layer, thereby reducing the damage to the original structure of the filter layer. As the insertion rod is gradually inserted into the filter layer, its diameter gradually increases, and the area of ​​action on the filter layer also gradually increases, making the force of the insertion rod on the filter layer more uniform. This avoids excessive pressure in local areas, which could lead to severe deformation of the filter layer structure or pore blockage. It helps to maintain the stability of the pore distribution of the filter layer, and thus maintains the filtration performance of the filter layer to a certain extent.

[0023] Reference Figure 3 As shown, furthermore, the outer wall of the insertion rod 22 is provided with multiple sets of flow guiding grooves 24 along its axial direction. When the insertion rod 22 is inserted into the filter layer, the backwash water will flow along the grooves of the insertion rod 22, making the water flow more evenly distributed in the filter media and more effectively acting on the interior of the filter media. This avoids situations where the local water flow is insufficient or excessive. Moreover, when the backwash water flows through the flow guiding grooves 24, it will generate a certain amount of turbulence. The turbulence can break the relatively stable water flow boundary layer around the filter media, allowing the water flow to contact the filter media more fully, further enhancing the flushing and carrying capacity of impurities, and helping impurities inside the filter media to be discharged more quickly.

[0024] Reference Figure 1 As shown, there are multiple inserts 2, and each insert 2 corresponds to a long-handled filter head 12. Since the long-handled filter heads 12 are evenly distributed in the filter tank 1, this one-to-one correspondence can ensure that impurities in each part of the filter media layer can be effectively removed, avoiding blind spots in cleaning, thereby improving the filtration effect and water quality uniformity of the entire filter tank 1. During backwashing, the long-handled filter head 12 will discharge backwash airflow or backwash waterflow, which will enter the filter layer along with the guide groove 24 on the insert rod 22 that is close to it.

[0025] Furthermore, sealing connectors 4 are provided at the connection between the fixed column 21 and the filter plate 11, as well as at the connection between the fixed column 21 and the insertion rod 22. The sealing connectors 4 can be made of materials such as nitrile rubber, which have good resistance to acid and alkali solutions, to ensure stable performance during long-term use and prevent impurities from entering the fixed column 21 and affecting the normal movement of the insertion rod 22.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backwashing device for purifying tap water, comprising a filter tank (1) filled with a filter media layer, wherein a long-handled filter head (12) is provided on a filter plate (11) inside the filter tank (1); characterized in that, Also includes; Insert (2), the insert (2) is vertically installed on the filter plate (11), the insert (2) includes a fixed post (21) installed on the filter plate (11) and an insertion rod (22) that is slidably connected to the fixed post (21), which is used to insert into the filter media layer to help loosen the filter media and make it easier for the attached impurities between the filter media particles to fall off; A drive mechanism is used to drive the insertion rod (22) to be intermittently inserted into the filter media layer.

2. The tap water purification backwashing device according to claim 1, characterized in that, The drive mechanism includes an air supply pipe (3) connected to an external compressed air source and an electromagnetic pulse valve (31) provided on the air supply pipe (3). A distribution pipe (32) is provided between the fixed column (21) and the air supply pipe (3).

3. The tap water purification backwashing device according to claim 1, characterized in that, The upper end of the insertion rod (22) is provided with an insertion part (23), and the diameter of the insertion part (23) gradually increases from top to bottom.

4. The tap water purification backwashing device according to claim 1, characterized in that, Multiple sets of flow guide grooves (24) are provided on the outer wall of the insertion rod (22) along its axial direction.

5. The tap water purification backwashing device according to claim 1, characterized in that, There are multiple inserts (2), and each insert (2) corresponds to a long-handled filter head (12).

6. The tap water purification backwashing device according to claim 1, characterized in that, Sealing connectors (4) are provided at the connection between the fixed column (21) and the filter plate (11) and at the connection between the fixed column (21) and the insertion rod (22).

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