Multi-stage filtering and separating device for treating municipal sewage

Abstract

The utility model relates to the technical field of sewage filtering and separating, and discloses a multi-stage filtering and separating device for treating municipal sewage, which comprises a filtering component, a cleaning component, a supporting component, a liquid discharging component and a flocculation component. During cleaning, the first rotating motor drives the power gear to drive the offset block to rotate, so that the filter plate and the rotating bottom plate rotate, impurities fall into the storage frame under the action of gravity, action is reliable, operation is easy to respond, after cleaning, the torsion spring restorer enables parts to reset, design is rapid and convenient, and the cleaning efficiency is improved. The filtered sewage passes through the flocculation assembly, so that fine particles are gathered into floccules under the action of a flocculating agent, and then the floccules are filtered by the filter frame, so that the sewage treatment is more complete.

Description

Technical Field

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

[0002] With the acceleration of urbanization and the improvement of industrialization, the amount of sewage discharge is increasing day by day, which puts forward higher requirements for sewage treatment technology. Traditional sewage treatment methods often have problems such as low treatment efficiency, large footprint, and high operating costs. Therefore, researching and developing new efficient, energy-saving, and environmentally friendly sewage treatment technologies has become an urgent task. Multi-stage filtration and separation devices have emerged in this context. They purify sewage through physical methods and have the advantages of high treatment efficiency, small footprint, and low operating costs. Therefore, they have been widely used in the field of sewage treatment.

[0003] In practice, existing multi-stage wastewater filtration and separation systems frequently encounter clogging problems. This not only greatly reduces treatment efficiency but also increases maintenance costs and difficulties. Specifically, these devices are often poorly designed to effectively handle the complex and varied impurities in wastewater, especially those pollutants with small particle sizes and special properties. These pollutants tend to accumulate on the surface of the filter media and form a dense filter cake layer, which in turn blocks the filtration channels, obstructs water flow, and affects the continuous and stable operation of the entire system.

[0004] Furthermore, existing technologies are not ideal for separating finer impurities when treating wastewater. These impurities include, but are not limited to, microplastic particles, dissolved organic matter, heavy metal ions, and certain microorganisms. Because their size is close to or smaller than that of conventional filter pores, these tiny impurities can often penetrate the filter media and be discharged with the treated water, thereby reducing the quality of the effluent and posing a potential threat to the environment.

[0005] To address the aforementioned problems, this application provides a multi-stage filtration and separation device for treating municipal wastewater. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-stage filtration and separation device for treating municipal sewage, so as to solve the problems existing in the background art.

[0007] This utility model provides the following technical solution: a multi-stage filtration and separation device for treating municipal sewage, including a filter assembly, a cleaning assembly installed on the filter assembly, a support assembly and a drainage assembly installed on the filter assembly, and a flocculation assembly installed on the left side of the drainage assembly;

[0008] The filtration assembly includes at least a filter box with a built-in filter plate. The cleaning assembly includes a first rotary motor, a drive gear, a driven gear, an offset block, a connecting rod, a transmission rod, a limiting rotating column, a mounting block, a torsion spring resetter, and a slot. The first rotary motor is fixedly installed in the filter box. The first rotary motor's transmission shaft is fixedly sleeved with the drive gear. The drive gear meshes with the driven gear. The driven gear is fixedly installed on the side wall of the offset block. The limiting rotating column is rotatably engaged with the side wall of the filter box and fixedly connected to the offset block. The offset block at the top of the filter box has a driven gear fixedly installed on the side away from the filter box. The transmission rod is movably engaged with both ends of the offset block and makes them drive-connected. Two offset blocks located above the filter box are respectively fixedly installed at both ends of the connecting rod. The mounting block is fixedly installed below the side wall of the filter box. One end of the torsion spring resetter is fixedly connected to the mounting block, and the other end is fixedly connected to the offset block located at the bottom of the side wall of the filter box.

[0009] Furthermore, the filter box is a longitudinally placed cylinder, and the filter plate includes a first filter plate and a second filter plate arranged in the vertical direction along the height of the filter box. A rotating base plate is movably connected to the bottom of the filter box. The first filter plate, the second filter plate, and the rotating base plate are snapped onto both ends of the inner wall of the filter box and fixedly connected to a limiting rotating column.

[0010] As a further improvement on the above solution, the front ends of the first filter plate, the second filter plate, and the rotating base plate are all provided with slots.

[0011] As a further step of the above solution, the filter assembly also includes a water inlet pipe, which is fixedly sleeved on the top of the filter box. The first filter plate, the second filter plate, and the rotating base plate are sequentially snapped into the inner wall of the filter box from top to bottom through slots.

[0012] As a further step of the above solution, the support assembly includes a first fixing ring, a support foot, and a storage frame. The first fixing ring is fixedly sleeved on the side wall of the filter box, and the support foot is fixedly installed below the first fixing ring. The storage frame is located directly below the filter box.

[0013] As a further step of the above solution, the drainage assembly includes a connecting pipe, a second rotary motor, a rotating blade, and a clamping bracket. The connecting pipe is fixedly installed on the side wall of the filter box and communicates with its inner cavity. The clamping bracket is fixedly clamped into the inner cavity of the connecting pipe. The second rotary motor is fixedly installed on the clamping bracket, and the second rotary motor drive shaft is fixedly sleeved on the rotating blade.

[0014] As a further step of the above solution, the flocculation component includes a flocculation tank, a filter frame, a filter tank, a connecting frame, a handle, a second fixing ring, and an outlet pipe. The filter tank is fixedly sleeved at the bottom of the flocculation tank, the outlet pipe is fixedly installed at the bottom of the filter tank and communicates with its inner cavity, the filter frame is movably snapped into the bottom of the flocculation tank, the connecting frame is fixedly installed on the upper edge of the filter frame, the handle is fixedly installed on the connecting frame, the second fixing ring is fixedly sleeved on the filter tank, and the right side of the second fixing ring is fixedly connected to the first fixing ring.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] During the cleaning process, the first rotating motor drives the power gear, which in turn drives the overall offset block to rotate through meshing transmission. This causes the filter plate and rotating base plate to rotate along their respective engagement points with the filter box, allowing impurities to fall into the storage frame under gravity. After cleaning, the offset components are reset by the torsion spring resetter. This design makes cleaning faster and more convenient. At the same time, after the wastewater is filtered by the filter components, the finer particles inside the wastewater can be enriched into flocs by the flocculant through the flocculation components. These flocs are then filtered through the filter frame, making the wastewater treatment more complete. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a partial cross-sectional view of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the cleaning component structure of this utility model.

[0020] Figure 4 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0021] The attached figures are labeled as follows: 1. Filter assembly; 101. Filter box; 102. Inlet pipe; 103. First filter plate; 104. Second filter plate; 105. Rotating base plate; 2. Cleaning assembly; 201. First rotary motor; 202. Power gear; 203. Driven gear; 204. Offset block; 205. Connecting rod; 206. Transmission rod; 207. Limiting rotating column; 208. Mounting block; 209. Torsion spring resetter; 210. Slot; 3. Support assembly; 301. First fixing ring; 302. Support foot; 303. Storage frame; 4. Drainage assembly; 401. Connecting pipe; 402. Second rotary motor; 403. Rotating blade; 404. Clip frame; 5. Flocculation assembly; 501. Flocculation tank; 502. Filter frame; 503. Filter tank; 504. Connecting frame; 505. Handle; 506. Second fixing ring; 507. Drainage pipe. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The multi-stage filtration and separation device for treating municipal sewage involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figure 1 and Figure 2 This utility model provides a multi-stage filtration and separation device for treating municipal sewage, including a filter assembly 1 and a cleaning assembly 2 installed on the filter assembly 1. A support assembly 3 and a drainage assembly 4 are installed on the filter assembly 1, and a flocculation assembly 5 is installed on the left side of the drainage assembly 4.

[0024] Reference Figure 1 and Figure 2 The filter assembly 1 includes a filter box 101 with built-in filter plates and an inlet pipe 102. The inlet pipe 102 is fixedly sleeved on the top of the filter box 101. The filter box 101 is a vertically placed cylinder. The filter plates include a first filter plate 103 and a second filter plate 104 arranged in the vertical direction along the height of the filter box 101. A rotating base plate 105 is movably connected to the bottom of the filter box 101. Furthermore, the front ends of the first filter plate 103, the second filter plate 104 and the rotating base plate 105 are all provided with slots 210. The first filter plate 103, the second filter plate 104 and the rotating base plate 105 are sequentially engaged with the inner wall of the filter box 101 through the slots 210 from top to bottom. At this time, sewage enters the inner cavity of the filter box 101 through the inlet pipe 102. Under the action of the first filter plate 103 and the second filter plate 104, large and small debris are filtered in sequence.

[0025] Reference Figure 2 and Figure 3 The cleaning component 2 includes a first rotary motor 201, a drive gear 202, a driven gear 203, an offset block 204, a connecting rod 205, a transmission rod 206, a limiting rotating column 207, a mounting block 208, a torsion spring resetter 209, and a slot 210. The first rotary motor 201 is fixedly installed in the filter box 101. The drive shaft of the first rotary motor 201 is fixedly sleeved with the drive gear 202. The drive gear 202 meshes with the driven gear 203. The driven gear 203 is fixedly installed on the side wall of the offset block 204. The first filter plate 103 and the second filter plate 104 are also included. The rotating base plate 105 is fixedly connected to the two ends of the inner wall of the filter box 101 with limiting rotating columns 207. The limiting rotating columns 207 are rotatably engaged with the side wall of the filter box 101 and fixedly connected with offset blocks 204. The offset block 204 at the top of the filter box 101 has a driven gear 203 fixedly installed on the side away from the filter box 101. The transmission rod 206 is movably engaged with both ends of the offset block 204 and makes them drive each other. The two offset blocks 204 located above the filter box 101 are respectively fixedly installed at both ends of the connecting rod 205. The mounting block 208 is fixedly installed on the filter box 101. Below the side wall of filter box 101, one end of the torsion spring resetter 209 is fixedly connected to the mounting block 208, and the other end is fixedly connected to the offset block 204 located at the bottom of the side wall of filter box 101. The front ends of the first filter plate 103, the second filter plate 104, and the rotating base plate 105 are all provided with slots 210. At this time, the drive shaft of the first rotary motor 201 drives the power gear 202. Under the meshing action between the power gear 202 and the driven gear 203, the offset block 204 is driven to rotate along the main shaft of the driven gear 203, and the offset block 204 is driven to rotate on both sides of the upper end of the filter box 101 through the connecting rod 205. As block 204 rotates, the first filter plate 103, the second filter plate 104, and the rotating base plate 105 rotate along their respective engagement points with the filter box 101 under the transmission action of the transmission rod 206. At the same time, under the action of the torsion spring resetter 209, the offset block 204, which is fixedly connected to the torsion spring resetter 209, is driven to rotate. Through the limit rotation column 207 and the connecting rod 205, all offset blocks 204 are driven to rotate until the first filter plate 103, the second filter plate 104, and the rotating base plate 105 are engaged with the inner wall of the filter box 101 through the slot 210.

[0026] Reference Figure 1 and Figure 2 The support component 3 includes a first fixing ring 301, a support foot 302 and a storage frame 303. The first fixing ring 301 is fixedly sleeved on the side wall of the filter box 101, the support foot 302 is fixedly installed below the first fixing ring 301, and the storage frame 303 is located directly below the filter box 101.

[0027] Reference Figure 2 and Figure 4The drainage assembly 4 includes a connecting pipe 401, a second rotary motor 402, a rotating blade 403, and a clamping bracket 404. The connecting pipe 401 is fixedly installed on the side wall of the filter box 101 and communicates with its inner cavity. The clamping bracket 404 is fixedly clamped into the inner cavity of the connecting pipe 401. The second rotary motor 402 is fixedly installed on the clamping bracket 404. The drive shaft of the second rotary motor 402 is fixedly sleeved with the rotating blade 403. At this time, the drive shaft of the second rotary motor 402 drives the rotating blade 403. Under the rotation action of the rotating blade 403, a negative pressure is generated in the connecting pipe 401, which draws the filtered sewage from the bottom of the filter box 101 into the connecting pipe 401.

[0028] Reference Figure 1 and Figure 2 The flocculation component 5 includes a flocculation tank 501, a filter frame 502, a filter tank 503, a connecting frame 504, a handle 505, a second fixing ring 506, and an outlet pipe 507. The filter tank 503 is fixedly fitted to the bottom of the flocculation tank 501. The outlet pipe 507 is fixedly installed at the bottom of the filter tank 503 and communicates with its inner cavity. The filter frame 502 is movably engaged at the bottom of the flocculation tank 501. The connecting frame 504 is fixedly installed on the upper edge of the filter frame 502. The handle 505 is fixedly installed on the connecting frame 504. The second fixing ring 506 is fixedly fitted to the filter tank 503. The first fixed ring 301 is fixedly connected to the right side of the second fixed ring 506. At this time, the flocculant is put into the flocculation tank 501. The finer particles inside the filtered sewage are enriched into flocs under the action of the flocculant, and then filtered through the filter frame 502. The filtered pretreated water is discharged through the outlet pipe 507 after passing through the filter tank 503. After a period of filtration, the filter frame 502 is pulled out from the flocculation tank 501 by pulling the handle 505 upward. The flocculent impurities accumulated in the filter frame 502 are poured out and then put back to avoid clogging.

[0029] The general implementation process of this utility model can be referred to as follows: When using this device, sewage flows into the inner cavity of the filter box 101 through the inlet pipe 102. Under the combined action of the first filter plate 103 and the second filter plate 104, large and small debris are filtered in sequence. At the same time, the drive shaft of the second rotary motor 402 drives the rotating blade 403 to rotate. Under the action of the rotating blade 403, a negative pressure is generated inside the connecting pipe 401, which draws the filtered sewage at the bottom of the filter box 101 into the flocculation tank 501 through the connecting pipe 401.

[0030] Subsequently, a flocculant is added to the flocculation tank 501, where finer particles in the filtered wastewater aggregate to form flocs. These flocs are then filtered through the filter frame 502. The filtered pretreated water then passes through the filter tank 503 and is finally discharged through the outlet pipe 507.

[0031] After a period of filtration, by pulling upwards on the handle 505, the filter frame 502 is pulled out of the flocculation tank 501 it is engaged with, the accumulated flocculent impurities inside the filter frame 502 are poured out, and then it is put back into its original position. The interior of the filter box 101 is cleaned by an automatic cleaning mechanism: the drive shaft of the first rotary motor 201 drives the power gear 202. Under the meshing action of the power gear 202 and the driven gear 203, the offset block 204 rotates along the main shaft of the driven gear 203, and through the transmission of the connecting rod 205, it drives the offset blocks 204 on both sides of the upper end of the filter box 101 to rotate. Subsequently, under the transmission action of the transmission rod 206, the first filter plate 103, the second filter plate 104, and the rotating base plate 105 all rotate along their respective engagement points with the filter box 101. At this time, the filtered impurities fall into the storage frame 303 under the action of gravity.

[0032] After cleaning, under the action of the torsion spring resetter 209, the offset block 204 fixedly connected to it is driven to rotate, and through the limit rotating column 207 and the connecting rod 205, all offset blocks 204 are driven to rotate until the first filter plate 103, the second filter plate 104 and the rotating base plate 105 are engaged with the inner wall of the filter box 101 through the slot 210, and the reset is completed.

[0033] Overall, the structural design of this invention makes equipment maintenance and cleaning more efficient and convenient. Furthermore, after initial filtration by the filtration components, the wastewater can be further filtered by the flocculation components, where fine particles aggregate into flocs under the action of a flocculant. These flocs then undergo secondary filtration through the filter frame. This design ensures more thorough wastewater treatment.

[0034] Finally, it should be noted that, in the description of this application, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. The accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model; other structures can refer to common designs. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. The above descriptions are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage filtering separation device for treating municipal sewage, comprising a filtering assembly (1), a cleaning assembly (2) mounted on the filtering assembly (1), a supporting assembly (3) and a liquid discharge assembly (4) mounted on the filtering assembly (1), and a flocculation assembly (5) mounted on the left side of the liquid discharge assembly (4), characterized in that: the filtering assembly (1) comprises at least a filtering box (101) with filtering plates built-in, the cleaning assembly (2) comprises a first rotary motor (201), a power gear (202), a driven gear (203), an offset block (204), a connecting rod (205), a transmission rod (206), a limiting rotary column (207), a mounting block (208), a torsional spring restorer (209) and a clamping groove (210), the first rotary motor (201) is fixedly installed on the filtering box (101), the transmission shaft of the first rotary motor (201) is fixedly sleeved with the power gear (202), the power gear (202) is engaged with the driven gear (203), the driven gear (203) is fixedly installed on the side wall of the offset block (204), the limiting rotary column (207) is rotatably clamped on the side wall of the filtering box (101) and fixedly connected with the offset block (204), the offset block (204) at the uppermost end of the filtering box (101) is fixedly installed with the driven gear (203) on the side away from the filtering box (101), the transmission rod (206) is movably clamped at both ends of the offset block (204) and connected in transmission, the two offset blocks (204) above the filtering box (101) are fixedly installed at both ends of the connecting rod (205), the mounting block (208) is fixedly installed below the side wall of the filtering box (101), and one end of the torsional spring restorer (209) is fixedly connected with the mounting block (208) and the other end is fixedly connected with the offset block (204) at the lowermost end of the side wall of the filtering box (101).

2. The multi-stage filtering separation device for treating municipal sewage according to claim 1, characterized in that: the filtering box (101) is a vertically placed cylinder, the filtering plates comprise a first filtering plate (103) and a second filtering plate (104) arranged in the up-down direction along the height of the filtering box (101), and the bottom of the filtering box (101) is movably connected with a rotary bottom plate (105), the first filtering plate (103), the second filtering plate (104) and the rotary bottom plate (105) are clamped at both ends of the inner wall of the filtering box (101) and fixedly connected with the limiting rotary column (207).

3. The multi-stage filtering separation device for treating municipal sewage according to claim 2, characterized in that: the first filtering plate (103), the second filtering plate (104) and the rotary bottom plate (105) are all provided with clamping grooves (210) at the front ends.

4. The multi-stage filtering separation device for treating municipal sewage according to claim 3, characterized in that: ​ ​ ​ The filter assembly (1) further comprises a water inlet pipe (102) fixedly sleeved above the filter box (101), and the first filter plate (103), the second filter plate (104) and the rotating bottom plate (105) are sequentially clamped on the inner wall of the filter box (101) from top to bottom through the clamping groove (210).

5. The multi-stage filtering and separating device for treating municipal sewage according to claim 4, characterized in that: The support assembly (3) comprises a first fixed ring (301), a support leg (302) and a storage frame (303), the first fixed ring (301) is fixedly sleeved on the side wall of the filter box (101), the support leg (302) is fixedly installed below the first fixed ring (301), and the storage frame (303) is arranged directly below the filter box (101).

6. The multi-stage filtering and separating device for treating municipal sewage according to claim 4, characterized in that: The liquid discharge assembly (4) comprises a connecting pipe (401), a second rotating motor (402), a rotating blade (403) and a clamping frame (404), the connecting pipe (401) is fixedly installed on the side wall of the filter box (101) and communicates with the inner cavity thereof, the clamping frame (404) is fixedly clamped in the inner cavity of the connecting pipe (401), the second rotating motor (402) is fixedly installed on the clamping frame (404), and the transmission shaft of the second rotating motor (402) is fixedly sleeved with the rotating blade (403).

7. The multi-stage filtering and separating device for treating municipal sewage according to claim 5, characterized in that: The flocculation assembly (5) comprises a flocculation tank (501), a filter frame (502), a filter tank (503), a connecting frame (504), a handle (505), a second fixed ring (506) and a liquid outlet pipe (507), the filter tank (503) is fixedly sleeved on the bottom of the flocculation tank (501), the liquid outlet pipe (507) is fixedly installed on the bottom of the filter tank (503) and communicates with the inner cavity thereof, the filter frame (502) is movably clamped on the bottom of the flocculation tank (501), the connecting frame (504) is fixedly installed on the upper end edge of the filter frame (502), the handle (505) is fixedly installed on the connecting frame (504), the second fixed ring (506) is fixedly sleeved on the filter tank (503), and the right side of the second fixed ring (506) is fixedly connected with the first fixed ring (301).

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