A sewage impurity layered filtering device

Abstract

The sewage impurity layered filtering device comprises a filtering sleeve, a filter screen, a water inlet pipe, a water outlet pipe, a sewage pipe group, a filter screen cleaning assembly and a switch valve, the inside of the filtering sleeve is provided with two concentric filter screens which are sleeved, and the filter screen cleaning assembly is arranged on the filtering sleeve and is used for cleaning the two filter screens, wherein: the two filter screens divide the filtering sleeve into a first filtering area, a second filtering area and a clean water area, the first filtering area, the second filtering area and the clean water area are respectively communicated with the sewage pipe group and are used for discharging different area stains; the water inlet pipe is communicated with the first filtering area, the water outlet pipe is communicated with the clean water area; the water inlet pipe, the water outlet pipe and the sewage pipe group are all communicated with the filtering sleeve through the switch valve, which is used for changing the water inlet end and the water outlet end, and then the filtering sleeve is back-flushed; the first filtering area, the second filtering area and the clean water area are communicated with the sewage pipe group, can cooperate with the filter screen cleaning assembly to back-flush and discharge the impurities in each area, and the operation is simple and the filter screen does not need to be frequently disassembled.

Description

Technical Field

[0001] This utility model relates to the field of wastewater filtration technology, specifically a wastewater impurity stratification filtration device. Background Technology

[0002] Application number CN202421068611.5 discloses a mineralized water stratified filtration device, including a shell, an inlet at the top of the shell, and an outlet at the bottom of the shell; a pull-out filter cylinder, which is pulled out from one side of the shell and installed into the assembly cavity of the shell, with the first filter mesh group of the filter cylinder facing the inlet, and a second filter mesh group at the bottom of the filter cylinder; and a mineralizing cylinder, with a flexible metal rod fixedly installed on each side, the mineralizing cylinder being connected to the filter cylinder through the flexible metal rods on both sides, and the mineralizing cylinder swinging under the gravity of the water flow, with mineral particles disposed inside the mineralizing cylinder.

[0003] The existing technology described above requires disassembling the filter screen to clean the impurities after filtration, and it cannot clean automatically, making the process of cleaning impurities rather cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater impurity stratification filtration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A wastewater impurity stratified filtration device includes a filter sleeve, filter screens, an inlet pipe, an outlet pipe, a sewage discharge pipe assembly, a filter screen cleaning component, and a switch valve. The filter sleeve contains two concentric filter screens that fit together. The filter screen cleaning component is mounted on the filter sleeve for cleaning the two filter screens. The two filter screens divide the filter sleeve into a primary filtration zone, a secondary filtration zone, and a clean water zone. The primary filtration zone, the secondary filtration zone, and the clean water zone are respectively connected to the sewage pipe assembly for discharging dirt from different areas. The inlet pipe is connected to the primary filtration zone, and the outlet pipe is connected to the purified water zone. The inlet pipe, outlet pipe, and sewage pipe assembly are all connected to the filter sleeve via a switch valve, which is used to change the inlet and outlet ends, thereby backflushing the filter sleeve.

[0006] Preferably, the sewage pipe assembly includes sewage pipe I, sewage pipe II and sewage pipe III installed on the filter sleeve. Sewage pipe I is connected to the primary filtration zone, sewage pipe II is connected to the secondary filtration zone and sewage pipe III is connected to the purified water zone.

[0007] Preferably, the filter cleaning assembly includes brushes, a U-shaped connecting rod, and an electric cylinder. The three brushes are respectively movably installed in the primary filtration zone, the secondary filtration zone, and the purified water zone. The U-shaped connecting rod is movably fitted onto the filter sleeve. The three connecting ends of the U-shaped connecting rod are respectively connected to the three brushes, and the other connecting end is powered by the electric cylinder.

[0008] Preferably, each of the sewage pipes I, II, and III is equipped with a switch valve.

[0009] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a wastewater impurity stratified filtration device. During operation, multiple filter screens can be set up to achieve stratified filtration. At the same time, the primary filtration zone, secondary filtration zone and clean water zone are connected to the sewage pipe group. With the help of the filter screen cleaning component, the impurities in each zone are backwashed and self-cleaned and discharged. The operation is simple and does not require frequent disassembly of the filter screens. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional frontal internal view of the present invention; Figure 3 This is a three-dimensional schematic diagram of the interior side of this utility model.

[0011] In the diagram: 1. Filter sleeve, 2. Filter screen, 3. Inlet pipe, 4. Outlet pipe, 5. Drain pipe assembly, 6. Filter screen cleaning assembly, 7. Switch valve, 11. Primary filtration zone, 12. Secondary filtration zone, 13. Clean water zone, 51. Drain pipe I, 52. Drain pipe II, 53. Drain pipe III, 61. Brush, 62. φ-shaped connecting rod, 63. Electric cylinder. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Example: Please see Figures 1 to 3 This utility model provides a technical solution: A wastewater impurity stratified filtration device includes a filter sleeve 1, filter screens 2, an inlet pipe 3, an outlet pipe 4, a sewage discharge pipe assembly 5, a filter screen cleaning assembly 6, and a switch valve 7. The filter sleeve 1 contains two concentric filter screens 2 that are fitted together. The filter screen cleaning assembly 6 is mounted on the filter sleeve 1 for cleaning the two filter screens 2. Two filter screens 2 divide the filter sleeve 1 into a primary filtration zone 11, a secondary filtration zone 12, and a clean water zone 13. The primary filtration zone 11, the secondary filtration zone 12, and the clean water zone 13 are respectively connected to the drain pipe assembly 5 to discharge dirt from different areas.

[0014] The inlet pipe 3 is connected to the primary filtration zone 11, and the outlet pipe 4 is connected to the purified water zone 13; the outlet pipe 4 is located on the side of the filter sleeve 1.

[0015] The inlet pipe 3, outlet pipe 4, and sewage pipe assembly 5 are all connected to the filter sleeve 1 via switch valves 7, used to change the inlet and outlet ends, thereby backwashing the filter sleeve 1. By controlling the opening and closing of switch valves 7, during filtration, only the one-way valves 7 on the inlet pipe 3 and outlet pipe 4 need to be opened, while the one-way valves 7 in other positions are closed. At this time, sewage can be input into the filter sleeve 1 from the inlet pipe 3, and discharged from the outlet pipe 4 after filtration. When backwashing the filter screen 2 is required, the switch valves 7 on the sewage pipe assembly 5 and the outlet pipe 4 in the area to be backwashed are opened. The filtered water is back-input into the filter sleeve 1 from the outlet pipe 4. The filtered water enters the filter sleeve 1 and simultaneously discharges the dirt from the area to be backwashed through the sewage pipe assembly 5, thereby achieving the purpose of backwashing the filter sleeve 1.

[0016] In a preferred embodiment, the drain pipe assembly 5 includes drain pipe I 51, drain pipe II 52, and drain pipe III 53 disposed on the filter sleeve 1. Drain pipe I 51 is disposed on the filter sleeve 1 and communicates with the primary filtration zone 11. Dirt in the primary filtration zone 11 is discharged through drain pipe I 51. Drain pipe I 51 and water inlet pipe III are both communicated with the primary filtration zone 11. Drain pipe I 51 and water inlet pipe III are both sealed to the inner filter screen 2 and are respectively located at the upper and lower ends of the inner filter screen 2. Figure 2 As shown, drain pipe II 52 is connected to the secondary filtration zone 12, and dirt in the secondary filtration zone 12 is discharged through drain pipe II 52. Drain pipe III 53 is connected to the clean water zone 13, and dirt in the clean water zone 13 is discharged through drain pipe III 53. Drain pipe III 53 is directly and sealed to the end of filter sleeve 1, and drain pipe II 52 is directly and sealed to the end of the outer filter screen 2. The discharge end of drain pipe II 52 passes through the side of drain pipe III 53, and a sealing gasket is provided where drain pipe II 52 passes through drain pipe III 53. The inlet end of water inlet pipe 3 passes through the sides of drain pipe II 52 and drain pipe III 53, and a sealing gasket is provided at each passage.

[0017] In a preferred embodiment, the filter cleaning assembly 6 includes brushes 61, a U-shaped connecting rod 62, and an electric cylinder 63. The three brushes 61 are movably installed in the primary filtration zone 11, the secondary filtration zone 12, and the purified water zone 13, respectively. The brushes 61 move vertically within the filter sleeve 1. The U-shaped connecting rod 62 is movably fitted onto the filter sleeve 1, and a sealing gasket is provided between the U-shaped connecting rod 62 and the filter sleeve 1. Three connecting ends of the U-shaped connecting rod 62 are connected to the three brushes 61, and the other connecting end is poweredly connected to the electric cylinder 63. The electric cylinder 63 synchronously drives the three brushes 61 to move within the filter sleeve 1 via the U-shaped connecting rod 62.

[0018] In a preferred embodiment, drain pipes I 51, II 52, and III 53 are all equipped with on / off valves 7. By controlling the opening and closing of the on / off valves 7 at different positions, the functions of filtering water and cleaning and removing dirt can be achieved.

[0019] The working principle of this utility model: During filtration, the switch valve 7 on the drain pipe group 5 is closed. At this time, water enters from the inlet pipe 3, is filtered by two filter screens 2, and is discharged from the outlet pipe 4.

[0020] When cleaning the filter screen 2, the electric cylinder 63 is started, and the three brushes 61 are driven to move in the filter sleeve 1 in a synchronized manner through the φ-shaped connecting rod 62, thereby cleaning the filter screen 2; When backflushing the primary filtration zone 11, close the switch valve 7 on the inlet pipe 3 and only open the switch valve 7 on the outlet pipe 4 and the drain pipe I 51. At this time, the water in the outlet pipe 4 will backflush into the primary filtration zone 11, so that the dirt in the primary filtration zone 11 will be discharged from the drain pipe I 51 along with the water in the inlet pipe 3.

[0021] The backflushing process in other areas is the same as above: open the corresponding switch valve 7 and the switch valve 7 of the water outlet pipe 4, while closing the switch valve 7 in other positions, and at the same time start the filter cleaning assembly 6 to clean the stains through backflushing.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater impurity stratification filtration device, comprising a filter sleeve (1), filter screens (2), an inlet pipe (3), an outlet pipe (4), a sewage discharge pipe assembly (5), a filter screen cleaning assembly (6), and a switch valve (7), wherein the filter sleeve (1) is provided with two concentric filter screens (2) fitted together, and the filter screen cleaning assembly (6) is provided on the filter sleeve (1) for cleaning the two filter screens (2), characterized in that: The two filter screens (2) divide the filter sleeve (1) into a primary filtration zone (11), a secondary filtration zone (12) and a clean water zone (13). The primary filtration zone (11), the secondary filtration zone (12) and the clean water zone (13) are respectively connected to the sewage pipe group (5) for discharging dirt from different areas. The inlet pipe (3) is connected to the primary filtration zone (11), and the outlet pipe (4) is connected to the purified water zone (13); The inlet pipe (3), outlet pipe (4) and sewage pipe group (5) are all connected to the filter sleeve (1) through the switch valve (7) to change the inlet end and outlet end to achieve backwashing of the filter sleeve (1).

2. The wastewater impurity stratification filtration device according to claim 1, characterized in that: The sewage pipe assembly (5) includes sewage pipe I (51), sewage pipe II (52) and sewage pipe III (53) installed on the filter sleeve (1). Sewage pipe I (51) is connected to the primary filtration zone (11), sewage pipe II (52) is connected to the secondary filtration zone (12), and sewage pipe III (53) is connected to the water purification zone (13).

3. The wastewater impurity stratification filtration device according to claim 2, characterized in that: The filter cleaning assembly (6) includes a brush (61), a scalloped connecting rod (62), and an electric cylinder (63). The three brushes (61) are respectively movably installed in the primary filtration zone (11), the secondary filtration zone (12), and the purified water zone (13). The scalloped connecting rod (62) is movably fitted on the filter sleeve (1). The three connecting ends of the scalloped connecting rod (62) are respectively connected to the three brushes (61), and the other connecting end is poweredly connected to the electric cylinder (63).

4. The wastewater impurity stratification filtration device according to claim 2, characterized in that: Each of the sewage pipes I (51), II (52) and III (53) is equipped with a switch valve (7).

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