Sewage treatment equipment with multi-stage filtration components

Abstract

The present invention relates to the technical field of sewage treatment devices, specifically to a sewage treatment device with a multi-stage filtering component, the device comprising a sewage treatment tank, a filtering unit, a cleaning unit, a sewage discharge unit and a control unit; a partition is arranged in the sewage treatment tank, the partition divides the sewage treatment tank into a plurality of receiving chambers; the filtering unit comprises a water pipe and a filter plate, a plurality of water inlet holes are evenly distributed in the circumference of the water pipe, one end of the water pipe is a blind end and the other end is an open end, the open end of the water pipe is located in an adjacent receiving chamber to the receiving chamber where the water pipe is assembled, the filter plate is arranged outside the water inlet hole of the water pipe, and the filter holes of the plurality of filter plates decrease in the direction of water flow; the cleaning unit is located on both sides of the filter plate, the cleaning unit comprises a supporting component and a brush roller, and the bristles on the outer periphery of the brush roller are in contact with the filter plate. The sewage treatment device disclosed in the present invention can clean the dirt on the surface of the filter plate and improve the water treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment devices, in particular to sewage treatment equipment with a multi-stage filtering component. Background Art

[0002] Water is an important resource that supports daily life and production, but the amount of sewage left over from daily life and production is also increasing. Direct discharge of sewage into rivers will damage the ecological environment of the water system. Therefore, sewage needs to be treated before discharge. The main purpose is to intercept impurities such as suspended matter, sludge, heavy metals, etc. contained in the sewage. The treated purified water can be used for greening irrigation and can also be discharged into rivers.

[0003] At present, the existing sewage treatment equipment is composed of multiple groups of arranged filter screens. The aperture of the filter screens decreases successively from front to back. The sewage is treated in multiple stages through multiple rows of filter screens. Although this type of sewage treatment equipment can achieve multi-stage filtration, the filter screen needs to be cleaned after a long period of filtration. If the sewage contains impurities such as sludge that are easy to clog the filter holes, it will affect the filtration efficiency. When the clogging area is large, the filter screen needs to be replaced or backwashed, which will lead to a decrease in the working efficiency of the water treatment equipment, and the suspended matter, sludge and impurities after backwashing will still remain in the filter tank. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a sewage treatment equipment with a multi-stage filtering component to avoid the reduction of the filtering flux of the filter disc, thereby effectively improving the working efficiency of the sewage treatment equipment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a sewage treatment device with a multi-stage filtering component, comprising a sewage treatment tank, a filtering unit, a cleaning unit, a sewage discharge unit and a control unit;

[0006] A partition is arranged in the sewage treatment tank, and the partition divides the sewage treatment tank into a plurality of containing chambers;

[0007] The number of the filter units is the same as the number of the receiving chambers. The filter units include a water pipe and a filter disc located in the receiving chamber. A plurality of water inlet holes are evenly distributed around the water pipe. One end of the water pipe is a blind end and the other end is an open end. The open end of the water pipe is located in a receiving chamber adjacent to the receiving chamber in which the water pipe is assembled. The filter disc is arranged outside the water inlet hole of the water pipe. The filter holes of the plurality of filter discs have apertures that decrease in sequence in the direction of water flow.

[0008] The cleaning unit is located on both sides of the filter disc, and includes a supporting component and a brush roller located in the accommodating chamber. The supporting component is fixedly connected to the sewage treatment tank, and the two ends of the brush roller are rotatably connected to the supporting component respectively, and the bristles on the periphery of the brush roller are in contact with the filter disc.

[0009] Furthermore, in the direction of water flow, a first partition and a second partition are sequentially arranged in the sewage treatment tank, and the first partition and the second partition divide the sewage treatment tank into a first receiving chamber, a second receiving chamber and a third receiving chamber; a first filter unit is arranged in the first receiving chamber, and the first filter unit includes a first water pipe and a first filter disc, and both ends of the first water pipe are respectively connected to the sewage treatment tank and the first partition in a sealed and rotatable manner, and the open end of the first water pipe is connected to the first partition in a sealed and rotatable manner and then extends into the second receiving chamber; a second filter unit is arranged in the second receiving chamber, and the second filter unit includes A second water pipe and a second filter disc, the blind end of the second water pipe is connected to the open end of the first water pipe through a connecting plate, the open end of the second water pipe is sealed and rotatably connected to the second partition and then extends into the third accommodating chamber; a third filter unit is arranged in the third accommodating chamber, the third filter unit includes a third water pipe and a third filter disc, the blind end of the third water pipe is connected to the open end of the second water pipe through a connecting plate, the open end of the third water pipe is sealed and rotatably connected to the sewage treatment tank and then extends out of the sewage treatment tank; the apertures of the filter holes of the first filter disc, the second filter disc and the third filter disc decrease in sequence.

[0010] Furthermore, a servo motor is arranged on the outside of the sewage treatment tank, and the output shaft of the servo motor is connected to the blind end of the first water pipe through transmission. The first water pipe and the second water pipe, and the second water pipe and the third water pipe are connected through a connecting plate. When the servo motor drives the first water pipe to rotate, the second water pipe and the third water pipe rotate synchronously. Liquid level sensors are arranged in the first receiving chamber, the second receiving chamber and the third receiving chamber, and the signal output end of the liquid level sensor is electrically connected to the signal receiving end of the control unit, and the signal control end of the control unit is electrically connected to the signal controlled end of the servo motor. Bevel gear rings are arranged on the first water pipe, the second water pipe and the third water pipe, and a bevel gear matched with the bevel gear ring is arranged on the end of the brush roller. After the bevel gear ring and the bevel gear are matched, the brush roller rotates at an increased speed.

[0011] Furthermore, the bottom plate of the sewage treatment tank is a V-shaped groove, an assembly groove is arranged at the bottom of the V-shaped groove, and the lower end of the partition is adapted to the V-shaped groove and the assembly groove; the sewage discharge unit includes a sewage pipe and a sewage pump, the sewage pipe is horizontally arranged in the assembly groove, the sewage pipe is sealedly connected to the partition and the sewage treatment tank, a plurality of groups of sewage holes are arranged on the lower side of the sewage pipe, each group of sewage holes is arranged in a herringbone shape, the diameter of the sewage pipe is 2 / 3-3 / 4 of the width of the assembly groove, and a gap is arranged between the sewage hole and the assembly groove; the sewage pump is located outside the sewage treatment tank, the sewage pump is connected to the sewage pipe through a pipeline, and the signal controlled end of the sewage pump is electrically connected to the signal control end of the control unit.

[0012] Furthermore, the support component is a box-shaped structure, the side of the support component close to the filter disc is open, the bristles on the periphery of the brush roller contact the filter disc through the opening of the support component, and a flushing hole is set at the lower end of the support component, and the axis of the flushing hole is inclined toward the filter disc.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The sewage treatment equipment disclosed in the present invention comprises the following steps: the water to be treated in the first receiving chamber enters through the water inlet hole of the first water pipe after being filtered by the first filter disc, and flows into the second receiving chamber from the open end of the first water pipe; the water in the second receiving chamber enters through the water inlet hole of the second water pipe after being filtered by the second filter disc, and flows into the third receiving chamber from the open end of the second water pipe; the water in the third receiving chamber enters through the water inlet hole of the third water pipe after being filtered by the third filter disc, and flows out from the open end of the third water pipe, thereby completing the three-level treatment of the sewage.

[0015] The dirt (suspended matter, sludge, etc.) in the first holding chamber, the second holding chamber and the third holding chamber falls to the bottom by gravity. A V-shaped groove is provided at the bottom of the sewage treatment tank to facilitate the dirt to slide into the assembly groove. The sewage pipe installed in the assembly groove descends under the suction action of the sewage pump to discharge the dirt in the assembly groove.

[0016] 2. During the sewage treatment process, dirt will block the filter holes on the filter disc (the clogging area of ​​the first filter disc is particularly severe). As the dirt is intercepted and continuously enriched by the filter disc, the filtration flux of the filter disc will gradually decrease. Therefore, the filter disc needs to be cleaned or replaced frequently, resulting in low sewage treatment efficiency.

[0017] The present invention arranges a liquid level sensor in the sewage treatment pool. When the filter disc is blocked, the liquid level in the receiving chamber gradually rises. When the liquid level sensor detects that the liquid level rises to a preset value, it outputs a signal to the control unit. The control unit sends a control instruction, and the driving motor drives the conveying pipe and the filter disc to rotate. The brush roller and the filter disc move relative to each other, and the bristles clean the filter holes on the filter disc.

[0018] 3. The sewage treatment equipment disclosed in the present invention has multiple water pipes, and adjacent water pipes are connected by connecting plates to achieve synchronous rotation of the multiple water pipes, so as to clean multiple filter discs at the same time. A bevel gear ring is provided on the water pipe, and a bevel gear that cooperates with the bevel gear ring is provided on the brush roller. During the rotation of the water pipe and the filter disc, the brush roller rotates synchronously and at a faster speed, thereby accelerating the cleaning of the filter disc.

[0019] During the rotation of the brush roller, the water in the supporting component can be agitated. Due to the limitation of the box-shaped supporting component, part of the agitated water flows out from the opening of the supporting component to flush the dirt swept by the brush, and the other part is sprayed onto the filter disc through the flushing hole to flush the unflushed or flushed parts of the filter disc, thereby achieving multi-effect cleaning of the filter disc.

[0020] 4. In the sewage treatment equipment disclosed in the present invention, the diameter of the sewage pipe is 2 / 3-3 / 4 of the width of the assembly groove, a gap is set between the sewage hole and the assembly groove, and multiple groups of sewage holes are set on the lower side of the sewage pipe. Each group of sewage holes is arranged in a herringbone shape, which allows the sewage pipe to suck the dirt at the bottom of the sewage treatment tank in multiple directions, thereby enhancing the sewage discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 A partial cross-sectional view of

[0023] Figure 3 It is a cross-sectional view of a sewage treatment tank and a sewage discharge pipe of the present invention;

[0024] Figure 4 This is an enlarged structural schematic diagram of location A of the present invention;

[0025] Figure 5 It is a cross-sectional view of the first water delivery pipe and the first filter disc of the present invention.

[0026] In the figure: 10-sewage treatment tank, 11-first partition, 12-second partition, 13-V-shaped groove, 14-assembly groove, 15-servo motor, 16-liquid level sensor.

[0027] 21 - first water pipe, 22 - first filter disc, 23 - second water pipe, 24 - second filter disc, 25 - connecting plate, 26 - third water pipe, 27 - third filter disc, 28 - cone gear ring, 29 - water inlet hole.

[0028] 31-supporting component, 32-brush roller, 33-bevel gear, 34-flushing hole.

[0029] 41- sewage pipe, 42- sewage hole.

[0030] 50-Control unit. Implementation

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] See also Figure 1-5This embodiment provides a sewage treatment device with a multi-stage filtering component, including a sewage treatment tank 10, a filtering unit, a cleaning unit, a sewage discharge unit and a control unit 50.

[0033] A partition is arranged in the sewage treatment tank 10, and the partition divides the sewage treatment tank into a plurality of accommodation chambers. In this embodiment, in the direction of water flow, a first partition 11 and a second partition 12 are arranged in sequence in the sewage treatment tank 10, and the first partition 11 and the second partition 12 divide the sewage treatment tank into a first accommodation chamber, a second accommodation chamber, and a third accommodation chamber; the bottom plate of the sewage treatment tank 10 is a V-shaped groove 13, and an assembly groove 14 is arranged at the bottom of the V-shaped groove 13, and the lower ends of the first partition 11 and the second partition 12 are adapted to the V-shaped groove 13 and the assembly groove 14. A servo motor 15 is arranged outside the sewage treatment tank 10, and a liquid level sensor 16 is arranged in the first accommodation chamber, the second accommodation chamber, and the third accommodation chamber. The signal output end of the liquid level sensor 16 is electrically connected to the signal receiving end of the control unit 50, and the signal control end of the control unit 50 is electrically connected to the signal controlled end of the servo motor 15.

[0034] The filter units are divided into three groups, namely, a first filter unit located in the first accommodation chamber, a second filter unit located in the second accommodation chamber, and a third filter unit located in the third accommodation chamber.

[0035] The first filter unit includes a first water pipe 21 and a first filter disc 22. The two ends of the first water pipe 21 are respectively connected to the sewage treatment tank 10 and the first partition 11 in a sealed and rotatable manner. The blind end of the first water pipe 21 is connected to the output shaft of the servo motor 15 in a driving manner. The open end of the first water pipe 21 is connected to the first partition 11 in a sealed and rotatable manner and then extends into the second accommodation chamber. The second filter unit includes a second water pipe 23 and a second filter disc 24. The blind end of the second water pipe 23 is connected to the open end of the first water pipe 21 through a connecting plate 25. The open end of the second water pipe 23 is connected to the second partition 12 in a sealed and rotatable manner and then extends into the third accommodation chamber. The third filter unit includes a second water pipe 23 and a second filter disc 24. The blind end of the second water pipe 23 is connected to the open end of the first water pipe 21 through a connecting plate 25. The open end of the second water pipe 23 is connected to the second partition 12 in a sealed and rotatable manner and then extends into the third accommodation chamber. Three water pipes 26 and a third filter disc 27, the blind end of the third water pipe 26 is connected to the open end of the second water pipe 23 through a connecting plate 25, and the open end of the third water pipe 26 is sealed and rotatably connected to the sewage treatment tank 10 and then extends out of the sewage treatment tank 10; a bevel gear ring 28 is arranged on the first water pipe 21, the second water pipe 23 and the third water pipe 26, and a plurality of water inlet holes 29 are uniformly distributed around the first water pipe 21, the second water pipe 23 and the third water pipe 26, the first filter disc 22, the second filter disc 24 and the third filter disc 27 are located outside the water inlet hole 29, and the filter hole diameters of the first filter disc 22, the second filter disc 24 and the third filter disc 27 decrease successively.

[0036] The cleaning unit is located on both sides of the three filter discs. Two sets of cleaning units are respectively arranged on both sides of each filter disc. The cleaning unit includes a support component 31 and a brush roller 32. The support component 31 is fixedly connected to the sewage treatment tank 10. The support component 31 is a box-shaped structure. The side of the support component 31 close to the first filter disc 22, the second filter disc 24 and the third filter disc 27 is open. The two ends of the brush roller 32 are respectively rotatably connected to the support component 31. The brush roller 32 is close to the first water pipe 21, the second water pipe 24 and the third water pipe 27. Bevel gears 33 matched with the bevel gear ring 28 are arranged at the ends of the water pipe 23 and the third water pipe 26. After the bevel gear ring 28 and the bevel gear 33 are matched with each other in transmission, the brush roller 32 rotates at an increased speed, and the bristles on the outer periphery of the brush roller 32 contact the sides of the first filter disc 22, the second filter disc 24 and the third filter disc 27 through the opening of the supporting component 31. A flushing hole 34 is arranged at the lower end of the supporting component 31, and the axis of the flushing hole 34 is inclined toward the first filter disc 22, the second filter disc 24 and the third filter disc 27.

[0037] The sewage discharge unit includes a sewage pipe 41 and a sewage pump. The sewage pipe 41 is horizontally arranged in the assembly groove 14. The sewage pipe 41 is sealedly connected to the first partition plate 11, the second partition plate 12 and the sewage treatment tank 10. A plurality of sewage holes 42 are arranged on the lower side of the sewage pipe 41. The two sewage holes 42 in each group are arranged in a herringbone shape. The diameter of the sewage pipe 41 is preferably 2 / 3 of the width of the assembly groove 14. Gaps are arranged around the sewage holes 42 and between the assembly groove 14. The sewage pump is located outside the sewage treatment tank 10. The sewage pump is connected to the sewage pipe 41 through a pipeline. The signal controlled end of the sewage pump is electrically connected to the signal control end of the control unit 50.

[0038] The water treatment equipment disclosed in the present invention has the following working principle:

[0039] The sewage to be treated enters the first receiving chamber, enters the first water pipe after being filtered by the first filter disc, flows into the second receiving chamber from the open end of the first water pipe, enters the second water pipe after being filtered by the second filter disc, enters the third receiving chamber from the open end of the second water pipe, and is discharged after passing through the third filter disc. In this process, the pore sizes of the first filter disc, the second filter disc, and the third filter disc are reduced in sequence, realizing multi-stage treatment of the sewage.

[0040] Since the dirt in the sewage, such as suspended matter and sludge produced by the flocculant, will clog the filter holes, the partial blockage of the filter holes will cause the filter flux of the filter disc to decrease, resulting in the increase of the liquid level in the receiving chamber. At this time, after the liquid level sensor detects the set value of the liquid level increase, the transmission signal is sent to the control unit, and the control unit controls the servo motor to work, and the servo motor drives the first water pipe, the second water pipe, and the third water pipe to rotate circumferentially, and the first filter disc, the second filter disc, and the third filter disc located on the first water pipe, the second water pipe, and the third water pipe rotate coaxially. At the same time, the bevel gear ring on the outside of the water pipe drives the brush roller to rotate, and the bristles on the outer periphery of the brush roller clean the filter disc. Since the brush roller rotates at a high speed, the water in the support component is in a high-speed stirring state, and a part of the flowing water is flushed from the open end of the support component to the cleaning area of ​​the brush, and the other part of the flowing water is discharged from the flushing hole of the support component to flush the bottom of the cleaning area, thereby improving the cleaning efficiency of the filter disc.

Claims

1. A sewage treatment device with a multi-stage filtering component, comprising a sewage treatment tank, a filtering unit, a cleaning unit, a sewage discharge unit and a control unit; a partition is arranged in the sewage treatment tank, and the partition divides the sewage treatment tank into a plurality of receiving chambers; the number of the filtering units is the same as the number of the receiving chambers, and the filtering unit comprises a water pipe and a filter disc located in the receiving chamber, a plurality of water inlet holes are evenly distributed in the circumference of the water pipe, one end of the water pipe is a blind end and the other end is an open end, the open end of the water pipe is located in an adjacent receiving chamber to the receiving chamber in which the water pipe is assembled, the filter disc is arranged outside the water inlet hole of the water pipe, and the filter holes of the plurality of filter discs decrease in the direction of water flow; the cleaning unit is located on both sides of the filter disc, and the cleaning unit comprises a supporting component and a brush roller located in the receiving chamber, the supporting component is fixedly connected to the sewage treatment tank, the two ends of the brush roller are respectively rotatably connected to the supporting component, and the bristles on the outer periphery of the brush roller are in contact with the filter disc, characterized in that: In the direction of water flow, a first partition and a second partition are sequentially arranged in the sewage treatment tank, and the first partition and the second partition divide the sewage treatment tank into a first receiving chamber, a second receiving chamber and a third receiving chamber; a first filter unit is arranged in the first receiving chamber, and the first filter unit includes a first water pipe and a first filter disc, and both ends of the first water pipe are respectively connected to the sewage treatment tank and the first partition in a sealed and rotatable manner, and the open end of the first water pipe is connected to the first partition in a sealed and rotatable manner and then extends into the second receiving chamber; a second filter unit is arranged in the second receiving chamber, and the second filter unit includes a second water pipe and a second filter disc, and the blind end of the second water pipe is connected to the open end of the first water pipe through a connecting plate, and the open end of the second water pipe is connected to the second partition in a sealed and rotatable manner and then extends into the third receiving chamber; a third filter unit is arranged in the third receiving chamber, and the third filter unit includes a third water pipe and a third filter disc, and the blind end of the third water pipe is connected to the open end of the second water pipe through a connecting plate The first water pipe is connected to the sewage treatment tank, and the open end of the third water pipe is sealed and rotatably connected to the sewage treatment tank and then extends out of the sewage treatment tank; the filter holes of the first filter disc, the second filter disc and the third filter disc are reduced in diameter in sequence; a servo motor is arranged on the outside of the sewage treatment tank, and the output shaft of the servo motor is transmission-connected to the blind end of the first water pipe. The first water pipe and the second water pipe, and the second water pipe and the third water pipe are connected through a connecting plate. When the servo motor drives the first water pipe to rotate, the second water pipe and the third water pipe rotate synchronously; liquid level sensors are arranged in the first receiving chamber, the second receiving chamber and the third receiving chamber, and the signal output end of the liquid level sensor is electrically connected to the signal receiving end of the control unit, and the signal control end of the control unit is electrically connected to the signal controlled end of the servo motor. Bevel gear rings are arranged on the first water pipe, the second water pipe and the third water pipe, and a bevel gear matched with the bevel gear ring is arranged on the end of the brush roller. After the bevel gear ring and the bevel gear are matched, the brush roller rotates at an increased speed.

2. The sewage treatment equipment with a multi-stage filtration assembly according to claim 1, characterized in that: The bottom plate of the sewage treatment tank is a V-shaped groove, an assembly groove is arranged at the bottom of the V-shaped groove, and the lower end of the partition is adapted to the V-shaped groove and the assembly groove; the sewage discharge unit includes a sewage pipe and a sewage pump, the sewage pipe is horizontally arranged in the assembly groove, the sewage pipe is sealedly connected to the partition and the sewage treatment tank, a plurality of groups of sewage holes are arranged on the lower side of the sewage pipe, each group of sewage holes is arranged in a herringbone shape, the diameter of the sewage pipe is 2 / 3-3 / 4 of the width of the assembly groove, and a gap is arranged between the sewage hole and the assembly groove; the sewage pump is located outside the sewage treatment tank, the sewage pump is connected to the sewage pipe through a pipeline, and the signal controlled end of the sewage pump is electrically connected to the signal control end of the control unit.

3. The sewage treatment equipment with a multi-stage filtration assembly according to claim 2, characterized in that: The support component is a box-shaped structure, and the side of the support component close to the filter disc is open. The bristles on the periphery of the brush roller contact the filter disc through the opening of the support component. A flushing hole is set at the lower end of the support component, and the axis of the flushing hole is inclined toward the filter disc.

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