Filtering device for domestic wastewater treatment

Abstract

The utility model provides a filtering device for domestic wastewater treatment, and relates to the technical field of filtering devices, the filtering device comprises a shell and an upper cover, the shell and the upper cover are connected through a flange, a sealing ring is arranged between the shell and the upper cover, the outer ends of the shell and the upper cover are respectively provided with a connecting sleeve used for being connected with a water pipe, and the connecting sleeves are connected with the water pipe. Wherein the connecting sleeve at the lower end is provided with a flow meter for detecting water flow. Wastewater filtered by the filter element in the filtering process can be stored in the water storage tank in the discharging process to be used for follow-up backflushing, then when backflushing is needed, the backflushing pump is started to enable the liquid inlet pipe to pump out liquid in the water storage tank and convey the liquid to the liquid inlet pipe, then the liquid is distributed into each exchange pipe under the action of the connecting ring, and therefore backflushing is achieved. And each exchange pipe flushes the filter element above, so that impurities are backflushed to the upper end of the filter element, the influence of the impurities blocked in the filter element on subsequent filtration is avoided, and the probability that the filter element is blocked during wastewater filtration is reduced, so that the filtration efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and more specifically, to a filtration device for treating domestic wastewater. Background Technology

[0002] Effective treatment of domestic wastewater through filtration devices to meet discharge or reuse standards is a crucial step in environmental protection and sustainable resource utilization. Filtration is an important step in the wastewater treatment process, aiming to remove suspended solids and impurities to improve the effectiveness of subsequent treatment processes and ensure effluent quality.

[0003] Existing filtration systems, while pre-treating large impurities with bar screens, still contain some large particles in the wastewater. These particles clog the filter cartridges and their inlets, leading to further buildup. As treatment time increases, this accumulation worsens, quickly clogging the filter cartridges. Once clogged, wastewater flow is obstructed, filtration efficiency drops drastically, and the entire wastewater treatment system is severely impacted.

[0004] To maintain the normal operation of the filtration device, frequent cleaning by maintenance personnel is required after clogging. This also necessitates stopping the filtration device, which interrupts the domestic wastewater treatment process and affects treatment efficiency. Therefore, we have made improvements and proposed a filtration device for domestic wastewater treatment that avoids the accumulation of large amounts of impurities on the filter element surface. Utility Model Content

[0005] The main purpose of this utility model is to provide a filtration device for treating domestic wastewater, which can effectively solve the problem that the filter element of existing filtration devices is easily clogged by large particles of impurities during the filtration process.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A filtration device for treating domestic wastewater includes a housing and a top cover, which are connected by a flange and a sealing ring. A connecting sleeve for connecting a water pipe is installed at the outer end of both the housing and the top cover, with a flow meter for detecting water flow installed at the lower end of the connecting sleeve. A mounting frame is provided inside the housing, and a holding frame is provided inside the top cover. A filter element is placed between the mounting frame and the holding frame. A backwashing assembly for backwashing the filter element is provided below the mounting frame, and a cleaning assembly for preventing impurity accumulation is installed inside the holding frame.

[0008] Preferably, the backflushing assembly includes a partition cover, which is disposed at the lower end of the mounting frame. A water storage tank is disposed on the outside of the partition cover. An exchange pipe is disposed on the surface of the partition cover. A backflushing pump is disposed at the bottom of the housing. An inlet pipe and an outlet pipe are respectively installed at both ends of the backflushing pump. The inlet pipe and the outlet pipe are respectively disposed in the water storage tank. A connecting ring is disposed between several of the exchange pipes. The outlet pipe is connected to the connecting ring.

[0009] Preferably, both the inlet pipe and the outlet pipe pass through the housing, and both the inlet pipe and the outlet pipe are provided with sealing sleeves to prevent leakage.

[0010] Preferably, the cleaning assembly includes a slide rail, which is respectively disposed on the upper end of the inner wall of the upper cover and the upper end of the pressure frame. A rotating ring is movably disposed between the upper and lower slide rails. A rotating seal is disposed between the rotating ring and the slide rail. An extension frame is disposed inside the rotating ring, and a cleaning brush plate is disposed inside the extension frame.

[0011] Preferably, the extension frame has a movable groove inside, and a sealing slide plate is movably installed inside the movable groove by an auxiliary spring. The bottom of the sealing slide plate is fixedly connected to the cleaning brush plate.

[0012] Preferably, an extension seat is installed on the outer side of the upper cover, the extension seat has a rotating groove inside, a motor is provided at the upper end of the extension seat, and a transmission gear is fixedly installed at the output end of the motor.

[0013] Preferably, the outer side of the rotating ring is provided with a full set of teeth, and the transmission gear meshes with the teeth.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) During the filtration process, the wastewater filtered by the filter element will be stored in the water storage tank during the discharge process for subsequent backwashing. Then, when backwashing is required, the backwash pump is started to draw out the liquid in the water storage tank and deliver it to the inlet pipe. Then, under the action of the connecting ring, the liquid is distributed to each exchange pipe and each exchange pipe flushes the filter element above it, so that impurities are backwashed to the top of the filter element, avoiding the blockage of the filter element and the impact of impurities on subsequent filtration. This reduces the probability of blockage when filtering wastewater and improves the filtration efficiency.

[0016] (2) By starting the motor, the transmission gear is driven to rotate, so that the transmission gear meshes with the teeth. The rotation of the extension frame is achieved by the sliding connection between the rotating ring and the slide rail. The cleaning brush plate assists in cleaning the impurities accumulated at the top of the filter element, so as to avoid the impurities from accumulating together and causing the volume to be too large, thus affecting the subsequent filtration efficiency. An auxiliary spring is set between the movable groove and the sealing slide plate, so that the cleaning brush plate can move, avoiding wear on the top of the filter element and improving the service life of this application. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point a;

[0022] Figure 6 for Figure 4 Enlarged structural diagram at point b;

[0023] Figure 7 This is a front view structural diagram of the present utility model;

[0024] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at point BB.

[0025] In the diagram: 1. Housing; 2. Top cover; 201. Pressure holder; 3. Flow meter; 4. Connecting sleeve; 5. Cleaning assembly; 501. Slide rail; 5011. Rotary seal; 502. Rotary ring; 5021. Tooth; 503. Extension frame; 5031. Movable groove; 5032. Auxiliary spring; 5033. Sealing slide plate; 5034. Cleaning brush; 504. Motor; 505. Extension seat; 5051. Rotary groove; 506. Transmission gear; 6. Backflushing assembly; 601. Separator cover; 602. Water storage tank; 603. Exchange pipe; 604. Backflushing pump; 605. Inlet pipe; 606. Outlet pipe; 607. Connecting ring; 7. Flange; 8. Sealing ring; 9. Filter element; 10. Mounting frame. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1 to 8 As shown, a filtration device for treating domestic wastewater includes a housing 1 and a top cover 2, which are connected by a flange 7. A sealing ring 8 is provided between the housing 1 and the top cover 2. A connecting sleeve 4 for connecting water pipes is installed at the outer ends of both the housing 1 and the top cover 2. A flow meter 3 for detecting water flow is installed at the lower end of the connecting sleeve 4. A mounting frame 10 is provided inside the housing 1, and a pressure holding frame 201 is provided inside the top cover 2. A filter element 9 is placed between the mounting frame 10 and the pressure holding frame 201. A backwashing assembly 6 for backwashing the filter element 9 is provided below the mounting frame 10. A cleaning assembly 5 for preventing the accumulation of impurities is installed inside the pressure holding frame 201.

[0028] By using the sealing ring 8 between the housing 1 and the upper cover 2 and the flange 7, it is ensured that there will be no wastewater leakage after the housing 1 and the upper cover 2 are combined. After the housing 1 and the upper cover 2 are combined, the mounting frame 10 and the pressure frame 201 will fix the filter element 9 to ensure that the filter element 9 can stably filter impurities in the wastewater. In the later disassembly, the filter element 9 can be removed simply by opening the housing 1 and the upper cover 2, so as to facilitate quick maintenance by personnel.

[0029] In this embodiment, the backflushing assembly 6 includes a partition cover 601, which is disposed at the lower end of the mounting frame 10. A water storage tank 602 is disposed on the outside of the partition cover 601. An exchange pipe 603 is disposed on the surface of the partition cover 601. A backflushing pump 604 is disposed at the bottom of the housing 1. An inlet pipe 605 and an outlet pipe 606 are respectively installed at both ends of the backflushing pump 604. The inlet pipe 605 and the outlet pipe 606 are respectively disposed in the water storage tank 602. A connecting ring 607 is disposed between several exchange pipes 603. The outlet pipe 606 is connected to the connecting ring 607.

[0030] Both the inlet pipe 605 and the outlet pipe 606 pass through the housing 1, and both the inlet pipe 605 and the outlet pipe 606 are equipped with sealing sleeves to prevent leakage.

[0031] During the filtration process, the wastewater filtered by the filter element 9 is stored in the water storage tank 602 during discharge for subsequent backwashing. When backwashing is required, the backwash pump 604 is activated to draw liquid from the water storage tank 602 through the inlet pipe 605 and deliver it to the inlet pipe 605. Then, under the action of the connecting ring 607, the liquid is distributed to each exchange pipe 603, and each exchange pipe 603 flushes the filter element 9 above it, so that impurities are backwashed to the top of the filter element 9, avoiding blockage of the filter element 9 and impurities affecting subsequent filtration. This reduces the probability of blockage when filtering wastewater and improves filtration efficiency.

[0032] In this embodiment, the cleaning component 5 includes a slide rail 501, which is respectively disposed on the upper end of the inner wall of the upper cover 2 and the upper end of the pressure frame 201. A rotating ring 502 is movably disposed between the upper and lower slide rails 501. A rotating seal 5011 is disposed between the rotating ring 502 and the slide rail 501. An extension frame 503 is disposed inside the rotating ring 502. A cleaning brush plate 5034 is disposed inside the extension frame 503.

[0033] By setting the rotary seal 5011 between the rotating ring 502 and the slide rail 501, it can be ensured that the rotating ring 502 can maintain the sealing of the inside of the upper cover 2 when rotating, and prevent internal wastewater from interfering with the meshing transmission of the transmission gear 506.

[0034] The extension frame 503 has an internal movable slot 5031. A sealing slide plate 5033 is movably installed inside the movable slot 5031 via an auxiliary spring 5032. The bottom of the sealing slide plate 5033 is fixedly connected to the cleaning brush plate 5034.

[0035] In this embodiment, an extension seat 505 is installed on the outer side of the upper cover 2. A rotating groove 5051 is opened inside the extension seat 505. A motor 504 is provided at the upper end of the extension seat 505. A transmission gear 506 is fixedly installed at the output end of the motor 504. A tooth 5021 is provided on the outer side of the rotating ring 502. The transmission gear 506 meshes with the tooth 5021.

[0036] The motor 504 is started to drive the transmission gear 506 to rotate, so that the transmission gear 506 meshes with the teeth 5021. The sliding connection between the rotating ring 502 and the slide rail 501 enables the extension frame 503 to rotate and cooperate with the cleaning brush plate 5034 to assist in cleaning the impurities accumulated at the upper end of the filter element 9, so as to prevent the impurities from accumulating together and becoming too large, thus affecting the subsequent filtration efficiency. An auxiliary spring 5032 is set between the movable groove 5031 and the sealing slide plate 5033, so that the cleaning brush plate 5034 can move, avoiding wear on the upper end of the filter element 9 and improving the service life of this application.

[0037] The working principle of a filtration device for treating domestic wastewater:

[0038] In use, the housing 1 and the top cover 2 are connected to the external water pipe through the connecting sleeve 4. The flow meter 3 monitors the flow rate of the filtered wastewater in real time. When the wastewater enters, it will be filtered by the filter element 9, and the filtered liquid will be discharged from the lower connecting sleeve 4. During this process, a portion of the filtered liquid will be stored in the water storage tank 602 for subsequent backwashing treatment.

[0039] When the flow meter 3 detects that the flow rate is too low, the backwash pump 604 is started so that the liquid in the water storage tank 602 is drawn out by the inlet pipe 605 and transported to the inlet pipe 605. Then, under the action of the connecting ring 607, the liquid is distributed to each exchange pipe 603 and each exchange pipe 603 flushes the filter element 9 above.

[0040] After rinsing is completed, the motor 504 is started to drive the transmission gear 506 to rotate, so that the transmission gear 506 meshes with the teeth 5021. The sliding connection between the rotating ring 502 and the slide rail 501 is used to realize the rotation of the extension frame 503 to cooperate with the cleaning brush plate 5034 to assist in cleaning the impurity accumulation area at the top of the filter element 9, thereby preventing the filter device from being blocked.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A filter device for domestic wastewater treatment, comprising a shell (1) and an upper cover (2), the shell (1) and the upper cover (2) being connected through a flange (7), and a sealing ring (8) being arranged between the shell (1) and the upper cover (2), characterized in that: Both the outer ends of the housing (1) and the top cover (2) are equipped with connecting sleeves (4) for connecting water pipes. The lower connecting sleeve (4) is equipped with a flow meter (3) for detecting water flow. The housing (1) is equipped with a mounting frame (10), and the top cover (2) is equipped with a holding frame (201). A filter element (9) is placed between the mounting frame (10) and the holding frame (201). A backwashing assembly (6) for backwashing the filter element (9) is provided below the mounting frame (10). A cleaning assembly (5) for preventing the accumulation of impurities is installed inside the holding frame (201).

2. The filter device for domestic wastewater treatment according to claim 1, characterized in that: The backflush assembly (6) includes a partition cover (601), which is located at the lower end of the mounting frame (10). A water storage tank (602) is provided on the outside of the partition cover (601). An exchange pipe (603) is provided on the surface of the partition cover (601). A backflush pump (604) is provided at the bottom of the housing (1). An inlet pipe (605) and an outlet pipe (606) are respectively installed at both ends of the backflush pump (604). The inlet pipe (605) and the outlet pipe (606) are respectively located in the water storage tank (602). A connecting ring (607) is provided between several of the exchange pipes (603). The outlet pipe (606) is connected to the connecting ring (607).

3. The filter device for domestic wastewater treatment according to claim 2, characterized in that: The inlet pipe (605) and outlet pipe (606) both pass through the housing (1), and both the inlet pipe (605) and outlet pipe (606) are provided with sealing sleeves to prevent leakage.

4. The filter device for domestic wastewater treatment according to claim 1, characterized in that: The cleaning component (5) includes a slide rail (501), which is respectively disposed on the upper end of the inner wall of the upper cover (2) and the upper end of the pressure frame (201). A rotating ring (502) is movably disposed between the upper and lower slide rails (501). A rotating seal (5011) is disposed between the rotating ring (502) and the slide rail (501). An extension frame (503) is disposed inside the rotating ring (502), and a cleaning brush plate (5034) is disposed inside the extension frame (503).

5. The filter device for domestic wastewater treatment according to claim 4, characterized in that: The extension frame (503) has an internal movable groove (5031), and a sealing slide plate (5033) is movably installed inside the movable groove (5031) via an auxiliary spring (5032). The bottom of the sealing slide plate (5033) is fixedly connected to the cleaning brush plate (5034).

6. The filter device for domestic wastewater treatment according to claim 4, characterized in that: An extension seat (505) is installed on the outside of the upper cover (2). A rotating groove (5051) is opened inside the extension seat (505). A motor (504) is provided at the upper end of the extension seat (505). A transmission gear (506) is fixedly installed at the output end of the motor (504).

7. The filter device for domestic wastewater treatment according to claim 6, characterized in that: The outer side of the rotating ring (502) is provided with a tooth (5021), and the transmission gear (506) meshes with the tooth (5021).

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