CN211419791U - Preliminary treatment device for sewage recovery - Google Patents

Abstract

The utility model relates to a preliminary treatment device for sewage recycling, which comprises a cylinder body, and a first partition plate and a second partition plate are respectively arranged in the cylinder body along the height direction. The first partition plate and the second partition plate are provided with water leakage openings. The water leakage opening of the first partition plate is provided with a first filter screen. The first filter screen is in the shape of an upwardly convex spherical surface. The second filter screen, the second filter screen is arranged in a cone towards the direction of the first filter screen, the aperture of the second filter screen is smaller than that of the first filter screen, the top of the cylinder is provided with a water inlet, and the bottom of the cylinder is arranged in a funnel shape , and a water outlet is provided at the funnel-shaped tip at the bottom of the cylinder. The utility model has the effect of preventing the filter screen from being blocked.

Description

A preliminary treatment device for sewage recycling

technical field

The utility model relates to the technical field of sewage treatment technology, in particular to a preliminary treatment device for sewage recycling.

Background technique

At present, with the development of cities, the pollution of water resources is gradually serious. Water pollution refers to the reduction or loss of the use value of water caused by harmful chemical substances, resulting in a serious waste of water resources. Therefore, it is a very necessary work to recycle and reuse sewage, and before the purification of sewage, it needs to be preliminarily treated to filter large-volume impurities in sewage.

In the existing preliminary treatment of sewage, a filter device is used to pass the sewage into the filter device, and the filter screen in the filter is used to filter the sewage, so as to achieve the purpose of preliminary removal of impurities.

The above-mentioned prior art solutions have the following defects: after long-term filtration, impurities are easily accumulated on the filter screen, causing blockage of the filter screen and reducing the filtering efficiency.

Utility model content

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a preliminary treatment device for sewage recycling, which has the effect of preventing the clogging of the filter screen.

The above-mentioned purpose of the present utility model is achieved through the following technical solutions:

A preliminary treatment device for sewage recycling, comprising a cylinder body, a first partition plate and a second partition plate are respectively arranged in the cylinder body along the height direction, the first partition plate is above the second partition plate, and the first partition plate and the second There are water leakage openings on the two partitions. A first filter screen is laid in the water leakage opening of the first partition plate. The first filter screen is in the shape of an upwardly convex spherical surface, and a second filter screen is arranged in the water leakage opening of the second partition plate. The second filter screen is arranged in the shape of a cone toward the direction of the first filter screen. The aperture of the second filter screen is smaller than that of the first filter screen. The top of the cylinder is provided with a water inlet, and the bottom of the cylinder is arranged in a funnel shape. The bottom funnel-shaped tip is provided with a water outlet.

By adopting the above technical solution, the sewage is sent into the cylinder from the water inlet, and the sewage flows from top to bottom, passing through the first filter screen and the second filter screen in turn, and at the first filter screen with a larger pore size, the larger pore size is filtered out. Large impurities are filtered out at the second filter screen with smaller pore size, and finally discharged from the water outlet.

When passing through the first filter screen, since the first filter screen has an upwardly protruding spherical surface, when large impurities are blocked on the first filter screen, it is difficult for the surface of the impurities to completely fit with the curved surface of the first filter screen. , thereby reducing the force area of impurities on the first filter screen, reducing the ability of impurities to grasp the screen surface under the action of water pressure, so that it can slide along the arc surface under the drive of water flow, so that impurities are not easily adsorbed on the first screen. A filter screen surface causes blockage, and the spherical surface has a larger filtering area, which can have better filtering efficiency under the condition of the same water leak.

When passing through the second filter screen, since the larger impurities have been filtered out at the first filter screen, the impurities left on the second filter screen are small particles of impurities. More smooth, it is not easy to be stuck on the mesh. Therefore, the second filter screen is arranged in a cone shape, and its side wall is a downward inclined slope. Driven by the water flow, impurities can be driven to move down the slope, preventing impurities from accumulating on the filter screen and blocking the second filter screen.

In a preferred example, the utility model can be further configured as follows: a scraper is abutted on the first filter screen, the scraper is attached to the surface of the first filter screen, a transmission rod is fixed on the scraper, and the transmission rod runs along the vertical direction. The straight direction even and its length direction pass through the spherical center of the first filter screen, and a motor for driving the transmission rod to rotate is fixed on the top of the cylinder.

By adopting the above technical solution, the motor can drive the rotating rod to rotate, so that the scraper rotates along the spherical surface of the first filter screen. During the rotation process, the scraper can scrape off the impurities remaining on the surface of the first filter screen. , to prevent impurities with strong adhesion ability from accumulating on the surface of the first filter screen, causing blockage.

In a preferred example of the present invention, a scraper made of a flexible material is provided on the side of the scraper facing the first filter screen, and the scraper is pressed against the surface of the first filter screen.

By adopting the above technical solution, the scraper made of the flexible material can be pressed against the surface of the first filter screen as much as possible without scratching the first filter screen, thereby reducing the surface of the scraper blade and the first filter screen as much as possible The gap between them improves the cleaning effect of the scraper on impurities during the rotation process.

In a preferred example, the present invention can be further configured as follows: a suction pipe is connected to the side of the water outlet away from the cylinder body, and a sewage pump is connected to the suction pipe.

By adopting the above technical solution, during the filtration process, the sewage pump is activated, and under the extraction of the sewage pump, a negative pressure is formed in the cylinder. Compared with the natural filtration of sewage under the action of gravity, the sewage can be made faster under the action of negative pressure. Passing through the first filter screen and the second filter screen speeds up the filtering speed and improves the filtering efficiency.

In a preferred example of the present invention, it can be further configured as follows: a first cleaning pipe, a first sewage pipe, a second cleaning pipe and a second sewage pipe are respectively pierced on the side wall of the cylinder along the height direction, the first The cleaning pipe and the first sewage pipe are located above the first partition, the second cleaning pipe and the second sewage pipe are located between the first partition and the second partition, the first sewage pipe is close to the first partition, and the second sewage The pipe is close to the second partition plate, and valves are provided on the first cleaning pipe, the first sewage pipe, the second cleaning pipe and the second sewage pipe.

By adopting the above technical solution, after a long time of filtration, impurities will accumulate on the first and second partitions, reducing the filtration efficiency. At this time, the filtration of sewage can be stopped and the interior of the cylinder can be cleaned. Open the valves of each pipeline, pass the first cleaning pipe and the second cleaning pipe respectively, and pass clean water into the cylinder. Discharge from the first sewage pipe and the second sewage pipe.

In a preferred example of the present invention, an annular water distributor is connected to both the first cleaning pipe and the second cleaning pipe, and the water distributor is evenly provided with water distribution ports along the circumferential direction.

By adopting the above technical solution, during cleaning, after the water flows into the first cleaning pipe and the second cleaning pipe, under the action of the annular water distributor, it can be sprayed more evenly to the first partition and the second partition The board can be cleaned in an all-round way to improve the cleaning effect.

In a preferred example, the utility model can be further configured as follows: a connecting pipe is arranged outside the cylinder, the connecting pipe is connected with the first sewage pipe and the second sewage pipe, a sewage collecting chamber is connected under the connecting pipe, and the sewage collecting chamber is connected with the connecting pipe. A third filter screen is provided, a cleaning port for cleaning the third filter screen is opened on the side wall of the sewage collection chamber, a cleaning door is provided on the upper cover of the cleaning port, and a recovery pipe is connected to the cylinder body, and the recovery pipe and the connecting pipe are located at the On both sides of the third filter screen, one end of the recovery pipe away from the sewage collection chamber is connected to the water outlet, and a valve is provided on the recovery pipe.

By adopting the above technical solution, after the first and second partitions are cleaned, the discharged water with impurities will enter the sewage collection chamber through the connecting pipe, and be removed under the filtration of the third filter screen. The filtered water is sent to the water outlet through the recycling pipe, and recycled together with the previously filtered sewage, which improves the utilization rate of water resources and is more environmentally friendly. By cleaning the door, the impurities on the third filter screen can be cleaned, so as to ensure the filtering effect of the third filter screen in the next cleaning.

In a preferred example of the present invention, the third filter screen can be further configured as follows: the third filter screen is inclined downward toward the cleaning port.

By adopting the above technical solution, the impurities on the third filter screen are easy to accumulate on one side of the cleaning port, thereby making cleaning more convenient and reducing the residue of impurities on the third filter screen after cleaning.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. During the filtration process, the filter screen is not easy to block;

2. Equipped with sewage pump, high filtration efficiency;

3. It is convenient to clean the inside of the cylinder;

4. The water after cleaning can be recycled, which is more green and environmentally friendly.

Description of drawings

Fig. 1 is the structural representation of embodiment;

2 is a partial cross-sectional view of the embodiment;

FIG. 3 is a partial cross-sectional view of the dirt collection chamber.

In the figure, 10, cylinder body; 20, first separator; 21, first filter screen; 22, scraper; 23, scraper; 24, transmission rod; 25, motor; 30, second separator; 31, The second filter screen; 40, the water inlet; 41, the water outlet; 42, the suction pipe; 43, the sewage pump; 50, the first cleaning pipe; 51, the first sewage pipe; 52, the second cleaning pipe; 53, the second Sewage pipe; 54, water distributor; 60, connecting pipe; 61, sewage collection chamber; 62, third filter screen; 63, cleaning door; 64, recovery pipe.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , it is a preliminary treatment device for sewage recycling disclosed by the utility model, comprising a cylinder body 10 , and a support foot is provided under the cylinder body 10 . A first partition plate 20 and a second partition plate 30 are respectively provided in the cylindrical body 10 along the height direction, and the first partition plate 20 is above the second partition plate 30 . Both the first partition plate 20 and the second partition plate 30 are provided with water leakage openings, a first filter screen 21 is laid in the water leakage opening of the first partition plate 20 , and a second filter screen 31 is arranged in the water leakage opening of the second partition plate 30 The top of the cylinder 10 is provided with a water inlet 40 , the bottom of the cylinder 10 is arranged in a funnel shape, and a water outlet 41 is provided at the funnel-shaped tip of the bottom of the cylinder 10 . The sewage is fed into the cylinder 10 from the water inlet 40 , and after being filtered by the first filter screen 21 and the second filter screen 31 in sequence, the preliminary treatment is completed, and then it is discharged from the water outlet 41 .

Referring to FIG. 2 , the first filter screen 21 has an upwardly convex spherical shape, and the second filter screen 31 is arranged in a cone shape toward the first filter screen 21 . A scraper 22 is abutted on the first filter screen 21, the scraper 22 is attached to the surface of the first filter screen 21, and a transmission rod 24 is fixed on the scraper 22, and the transmission rod 24 is even in the vertical direction and its length The direction passes through the spherical center of the first filter screen 21 , and a motor 25 for driving the transmission rod 24 to rotate is fixed on the top of the cylinder 10 . A scraper 23 made of a flexible material is provided on the side of the scraper 22 facing the first filter screen 21 , and the scraper blade 23 is pressed against the surface of the first filter screen 21 . The first filter screen 21 with a larger pore size is used to filter out impurities with large particles, and then the second filter screen 31 with a smaller pore size filters out impurities with small particles, while the first filter screen 21 and the second filter screen 31 are respectively spherical. And the conical setting can prevent the accumulation of impurities on the filter screen. Driven by the motor 25 , the scraper 23 can scrape off the stubborn impurities remaining on the first filter screen 21 .

Referring to FIG. 2 , a suction pipe 42 is connected to the side of the water outlet 41 away from the cylinder body 10 , and a sewage pump 43 is connected to the suction pipe 42 . During the filtration process, the sewage pump 43 is started. Under the extraction of the sewage pump 43, a negative pressure is formed in the cylinder 10, and under the action of the negative pressure, the sewage can be discharged from the first filter screen 21 and the second filter screen 31 more quickly. Pass, speed up the filtering speed.

Referring to FIG. 2 , a first cleaning pipe 50 , a first sewage pipe 51 , a second cleaning pipe 52 and a second sewage pipe 53 are respectively drilled on the side wall of the cylinder body 10 along the height direction. A sewage pipe 51 is located above the first partition 20 , the second cleaning pipe 52 and the second sewage pipe 53 are located between the first partition 20 and the second partition 30 , and the first sewage pipe 51 is close to the first partition 20 , the second sewage pipe 53 is close to the second partition 30 , and valves are provided on the first cleaning pipe 50 , the first sewage pipe 51 , the second cleaning pipe 52 and the second sewage pipe 53 . By filling the first cleaning pipe 50 and the second cleaning pipe 52 with clean water, the inside of the cylinder 10 can be cleaned, and the cleaned water can be discharged through the first sewage pipe 51 and the second sewage pipe 53 .

Referring to FIG. 2 , an annular water distributor 54 is connected to the first cleaning pipe 50 and the second cleaning pipe 52 , and the water distributor 54 is evenly provided with water distribution ports along the circumferential direction. The water distributor 54 can make the water fed from the first cleaning pipe 50 and the second cleaning pipe 52 flush the interior of the cylinder 10 more evenly, thereby reducing dead spots during flushing.

2 and 3, a connecting pipe 60 is provided outside the cylinder body 10, the connecting pipe 60 is connected to the first sewage pipe 51 and the second sewage pipe 53, and a sewage collecting chamber 61 is connected to the lower part of the connecting pipe 60. A third filter screen 62 is arranged in the chamber 61, a cleaning port for cleaning the third filter screen 62 is opened on the side wall of the dirt collection chamber 61, and a cleaning door 63 is covered on the cleaning port. The downward slope setting of the mouth. A recovery pipe 64 is communicated with the cylinder body 10. The recovery pipe 64 and the connecting pipe 60 are located on both sides of the third filter screen 62. One end of the recovery pipe 64 away from the sewage collection chamber 61 is connected to the water outlet 41. valve. The cleaning wastewater discharged from the first sewage pipe 51 and the second sewage pipe 53 can be filtered through the third filter screen 62, and can be recovered through the recovery pipe 64 after filtering, and opening the cleaning door 63 can clean the third The filter screen 62 is cleaned.

The implementation principle of this embodiment is:

1. When filtering through the first filter screen 21, since the first filter screen 21 has a spherical surface that protrudes upward, when the large impurities are blocked on the first filter screen 21, the surface of the impurities is difficult to match the curved surface of the first filter screen 21. The surface of the first filter screen 21 is completely attached, thereby reducing the stress area of impurities on the first filter screen 21, reducing the ability of impurities to grab the screen surface under the action of water pressure, so that it can be driven by the water flow along the surface of the screen. The arc surface slides down, so that impurities are not easily adsorbed on the surface of the first filter screen 21 to cause blockage, and the spherical surface has a larger filtering area, which can have better filtering efficiency under the condition of the same water leak. And the motor 25 can drive the rotating rod to rotate, so that the scraper 22 rotates along the spherical surface of the first filter screen 21. During the rotation, the scraper 22 can scrape off the impurities remaining on the surface of the first filter screen 21. , further preventing impurities with strong adhesion ability from accumulating on the surface of the first filter screen 21 .

2. When filtering through the second filter screen 31, since the larger impurities have been filtered out at the first filter screen 21, the impurities left on the second filter screen 31 are small particles of impurities and small particles. Compared with the impurities of large particles, the surface of impurities is smoother, and it is not easy to be stuck on the mesh. Therefore, the second filter screen 31 is arranged in a conical shape, and its side wall is a downward inclined slope. Under the driving of the water flow, impurities can be driven to move downward along the slope, so as to prevent impurities from accumulating on the filter screen and blocking the second filter screen 31. .

3. When cleaning, open the valves on the first cleaning pipe 50, the first sewage pipe 51, the second cleaning pipe 52 and the second sewage pipe 53, and feed the first cleaning pipe 50 and the second cleaning pipe 52 into the first cleaning pipe 50 and the second cleaning pipe 52. Under the action of the water distributor 54, clean water is evenly sprayed onto the first partition plate 20 and the second partition plate 30 to be cleaned in all directions, and then the water will carry impurities from the first sewage pipe 51 and the second The second sewage pipe 53 is discharged, and then enters the sewage collection chamber 61 through the connecting pipe 60, and removes impurities under the filtration of the third filter screen 62, and the filtered water is sent to the water outlet 41 through the recovery pipe 64. The previously filtered sewage is recycled together to improve the utilization rate of water resources. Through the cleaning door 63, the impurities on the third filter screen 62 can be cleaned, so as to ensure the filtering effect of the third filter screen 62 in the next cleaning.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a preliminary treatment device of sewage recovery which characterized in that: including barrel (10), be equipped with first baffle (20) and second baffle (30) respectively along direction of height in barrel (10), first baffle (20) are in second baffle (30) top, the mouth of a river that leaks has all been seted up on first baffle (20) and second baffle (30), the mouth of a river that leaks of first baffle (20) middle berth is equipped with first filter screen (21), first filter screen (21) become the bellied sphere form that makes progress, be equipped with second filter screen (31) in the mouth of a river that leaks of second baffle (30), second filter screen (31) become the cone setting towards first filter screen (21) direction, the aperture of second filter screen (31) is less than first filter screen (21), top at barrel (10) is equipped with water inlet (40), the bottom of barrel (10) becomes to leak hopper-shaped setting, and the most advanced that leaks hopper-shaped bottom at barrel (10) is equipped with delivery port (41).

2. The primary treatment device for sewage recovery according to claim 1, wherein: a scraper (22) is arranged on the first filter screen (21) in an abutting mode, the scraper (22) is attached to the surface of the first filter screen (21), a transmission rod (24) is fixed on the scraper (22), the transmission rod (24) penetrates through the center of the first filter screen (21) along the vertical direction even in the length direction, and a motor (25) used for driving the transmission rod (24) to rotate is fixed to the top of the barrel (10).

3. The primary treatment device for sewage recovery according to claim 2, wherein: and a scraping blade (23) made of flexible materials is arranged on one side of the scraping blade (22) facing the first filter screen (21), and the scraping blade (23) is tightly propped against the surface of the first filter screen (21).

4. The primary treatment device for sewage recovery according to claim 1, wherein: a water pumping pipe (42) is connected to one side of the water outlet (41) far away from the cylinder body (10), and a sewage pump (43) is connected to the water pumping pipe (42).

5. The primary treatment device for sewage recovery according to claim 4, wherein: wear to be equipped with first clearance pipe (50) respectively along the direction of height on the lateral wall of barrel (10), first blow off pipe (51), second clearance pipe (52) and second blow off pipe (53), first clearance pipe (50) and first blow off pipe (51) are located the top of first baffle (20), second clearance pipe (52) and second blow off pipe (53) are located between first baffle (20) and second baffle (30), first baffle (20) are pressed close to in first blow off pipe (51), second baffle (30) are pressed close to in second blow off pipe (53), all be equipped with the valve on first clearance pipe (50), first blow off pipe (51), second clearance pipe (52) and second blow off pipe (53).

6. The primary treatment device for sewage recovery according to claim 5, wherein: the first cleaning pipe (50) and the second cleaning pipe (52) are communicated with an annular water distributor (54), and water distribution openings are uniformly formed in the water distributor (54) along the circumferential direction.

7. The primary treatment device for sewage recovery according to claim 1, wherein: be equipped with connecting pipe (60) outside barrel (10), connecting pipe (60) intercommunication first blow off pipe (51) and second blow off pipe (53), below intercommunication at connecting pipe (60) has dirty room (61) of collection, be equipped with third filter screen (62) in dirty room (61) of collection, offer the clearance mouth that is used for clearing up third filter screen (62) on dirty room (61) lateral wall of collection, be equipped with clearance door (63) at clearance mouth upper cover, the intercommunication has recovery tube (64) on barrel (10), recovery tube (64) and connecting pipe (60) are located the both sides of third filter screen (62), the one end intercommunication delivery port (41) of dirty room (61) of collection is kept away from in recovery tube (64), be equipped with the valve on recovery tube (64).

8. The primary treatment device for sewage recovery according to claim 7, wherein: the third screen (62) is inclined downwardly towards the cleaning opening.

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