CN114849321A - District sewage treatment recycling system - Google Patents

Abstract

The utility model relates to a district sewage treatment recycling system, it is including the catch basin, biochemical pond, sedimentation tank, disinfection pond and the outlet well that communicate the setting in proper order, be provided with water inlet, delivery port and blowdown door on the catch basin, water inlet and blowdown door are located the catch basin vertical side wall just right mutually, the catch basin internal rotation is provided with first sieve section of thick bamboo, first sieve section of thick bamboo one end cage cover water inlet, other end cage cover blowdown door, water inlet department level elevation is higher than blowdown door department level elevation, the fixed drive assembly who supplies first sieve section of thick bamboo pivoted that is provided with in catch basin, first sieve section of thick bamboo internal fixation is provided with the clearance subassembly, the clearance subassembly includes scraper blade and brush, scraper blade and brush one end and water inlet top catch basin inner wall fixed connection, the other end and blowdown door top catch basin inner wall fixed connection, scraper blade and brush and the inside butt in first sieve section of thick bamboo top. This application has the linear debris that the adhesion is strong on the first sieve section of thick bamboo inner wall in time clear up, guarantees the effect of the interior sewage edulcoration efficiency of catchment pond.

Description

A residential sewage treatment and reuse system

technical field

The present application relates to the field of sewage treatment equipment, and in particular to a residential sewage treatment and reuse system.

Background technique

At present, sewage treatment is a process of purifying sewage to meet the water quality requirements for reuse. Sewage treatment is widely used in construction, agriculture, catering and other fields, and is increasingly entering the daily life of ordinary people. Build a sewage treatment system in the community to reduce the waste of water resources in the community.

In the related art, the sewage treatment system includes a collection tank, a biochemical tank, a sedimentation tank, a disinfection tank and a water outlet well connected in sequence, wherein the biochemical tank includes an anaerobic tank, an anoxic tank and an aerobic tank, and the collection tank is provided with a mechanical grille , the mechanical grille carries out the preliminary treatment process of debris on the sewage entering the sump, the biochemical tank performs the nitrification reaction, the sedimentation tank settles the sewage, and then enters the disinfection tank for disinfection, and finally enters the outlet well and can be used as daily reclaimed water.

In view of the above-mentioned related technologies, the inventor believes that there are many kinds of impurities in sewage, and linear impurities with strong adhesion are easily entangled and adsorbed on the mechanical grille, which affects the sewage removal effect in the sump.

SUMMARY OF THE INVENTION

In order to improve the defect that there are various types of debris in the sewage, and the linear debris with strong adhesion is easy to be entangled and adsorbed on the mechanical grille, which affects the decontamination effect of the sewage in the sump, the present application provides a community sewage treatment and reuse system. .

A community sewage treatment and reuse system provided by the application adopts the following technical scheme:

A community sewage treatment and reuse system, comprising a collection tank, a biochemical tank, a sedimentation tank, a disinfection tank and a water outlet well connected in sequence, and the water collection tank is provided with a water inlet, a water outlet and a sewage gate, and a water inlet and a sewage gate. It is located on the opposite vertical side wall of the water collection tank. A first screen cylinder is rotated in the water collection tank. One end of the first screen cylinder covers the water inlet and the other end covers the sewage door. A drive assembly for the rotation of the first screen drum is fixed in the water collection tank, and a cleaning assembly is fixed in the first screen drum. The cleaning assembly includes a scraper and a brush. One end of the scraper and the brush is above the water inlet. The inner wall of the sump is fixedly connected, the other end is fixedly connected to the inner wall of the sump above the sewage gate, and the scraper and the brush are in contact with the inside of the top of the first screen cylinder.

By adopting the above technical solution, the sewage enters the sump and directly into the first screen drum, the driving component drives the first screen drum to rotate, the sewage is filtered by the first screen drum while flowing, and the debris in the sewage is retained in the first screen drum In the cylinder, the scraper scrapes off the adhering debris on the inner wall of the first sieve cylinder while the first sieve cylinder rotates, and the brush sweeps the remaining sundries, so as to remove the strong adhesion lines on the first sieve cylinder. The first sieve cylinder keeps the efficiency of filtering sewage, and the subsequent sewage enters the biochemical tank, sedimentation tank, disinfection tank and outlet well in turn, so as to maintain the sewage removal efficiency in the collection tank, so that the sewage finally becomes suitable for use. water effect.

Optionally, the first sieve cylinder is inclined and the inclination direction is inclined downward along the direction away from the water inlet, and the cleaning component is arranged in accordance with the inclination of the first sieve cylinder.

By adopting the above technical solution, the cleaning assembly and the first screen cylinder are inclinedly arranged, so that after the cleaning assembly cleans the linear debris adhering to the first screen cylinder, the debris slides to the sewage door in accordance with the inclined trend, and is then removed by the maintenance personnel. Clean, improve the cleaning efficiency.

Optionally, the outer wall of the first sieve cylinder is sleeved with a second sieve cylinder, the inner wall of the second sieve cylinder is in contact with the outer wall of the first sieve cylinder, and the sieve holes of the second sieve cylinder and the sieve holes of the first sieve cylinder are completely overlapped. , between the second sieve drum and the first sieve drum, a distance adjustment component for the second sieve drum to rotate or fix relative to the first sieve drum is arranged.

By adopting the above technical solution, the setting of the second sieve cylinder and the first sieve cylinder can adjust the overlapping area of their own sieve holes through the distance adjustment component, so as to control the accuracy of screening the impurities in the sewage and improve the impurity removal of the sewage. It is also possible to make the sieve holes of the first sieve cylinder and the second sieve cylinder have no overlapping parts at all, cooperate with the cleaning component, flush the cleaning water inside the first sieve cylinder, and flush the debris in the first sieve cylinder at one time. , to improve the degree of cleaning the adhering debris on the first screen cylinder.

Optionally, the distance adjustment assembly includes bolts and nuts, the second sieve cylinder is provided with elongated holes, the elongated holes are opened along the rotation direction of the second sieve cylinder, and the bolts are embedded and fixed on the inner wall of the first sieve cylinder. The other end is threaded through the elongated hole and connected with the nut.

By adopting the above technical solution, the nut is rotated to create a gap between the nut and the outer wall of the second sieve cylinder, the second sieve cylinder is rotated, and the bolt moves in the elongated hole. After the relative positions of the first sieve cylinder and the second sieve cylinder are adjusted, Tighten the nut to make the first sieve cylinder and the second sieve cylinder fixed, and the operation is simple and convenient.

Optionally, the drive assembly includes a motor and a pulley, the motor is fixed on the inner wall of the sump, and the pulley is fastened on the rotating shaft of the motor and the peripheral outer wall of the second sieve cylinder, and the outer wall of the second sieve cylinder is provided with The card slot is opened for a week along the outer wall of the second sieve cylinder, and the pulley is located in the card slot.

By adopting the above technical solution, the motor rotates to drive the pulley, and the pulley drives the second screen drum to rotate, and the opening of the slot enables the pulley to stably drive the second screen drum to rotate, reducing the occurrence of displacement and improving the rotation stability of the second screen drum. .

Optionally, the inner wall of the water collecting tank is fixedly provided with driven wheels, and there are no less than two driven wheels located below both ends of the second sieve drum respectively, and the driven wheels are in contact with the outer wall of the second sieve drum.

By adopting the above technical solution, the setting of the driven wheel can make the second sieve drum and the first sieve drum have a distance from the inner wall of the sump. The rotation of the first sieve drum and the second sieve drum reduces the friction between the first sieve drum and the second sieve drum and the inner wall of the sump, and improves the smoothness of the rotation of the first sieve drum and the second sieve drum.

Optionally, the scraper is inclined to the side wall facing and away from the rotation direction of the first screen drum, and the inclined direction is inclined along the direction toward the center line of the first screen drum and finally intersects.

By adopting the above technical solution, the inclined side wall of the scraper is arranged, so that the debris scraped off the first sieve cylinder slides down along the inclined side wall, avoids the accumulation of debris between the scraper and the inner wall of the first sieve cylinder, and improves the scraper. The efficiency of the plate to clean the inner wall of the first screen drum.

Optionally, a through groove is provided on the water collection tank, the through groove is opened horizontally, the sewage door is hinged with the side wall of the water collection tank and completely covers the through groove, and a warning component is provided on the water collection tank, and the warning component includes a pressure bearing plate, a spring and warning rod, the pressure-bearing plate is set vertically, the vertical projection of the pressure-bearing plate coincides with the vertical projection of the through groove, the pressure-bearing plate is located in the through groove, there is a distance between the pressure-bearing plate and the sewage door, the spring is set horizontally, the spring and the The warning rods are located between the pressure-bearing plate and the sewage door. One end of the spring is fixedly connected to the pressure-bearing plate, and the other end is fixedly connected to the sewage discharge door. The warning rod is set horizontally. One end of the warning rod is fixedly connected to the pressure-bearing plate, and the other end penetrates the sewage door. , In the state of the original length of the spring, the side wall of the pressure plate facing the inside of the sump is coplanar with the inner wall of the sump where it is located.

By adopting the above technical solution, the debris cleaned by the cleaning component rolls down to the pressure-bearing plate in accordance with the inclined first screen cylinder, and gradually accumulates. The pressure-bearing plate slides toward the sewage door, and the sewage door is deep at the end of the warning rod, so that the cleaning personnel can observe that the longer the length of the sewage door in the depth of the warning rod, it proves that the more debris is accumulated, which serves as a warning to the cleaning personnel. effect.

Optionally, the spring ring is sleeved outside the warning rod, and the warning rod is provided with a scale.

By adopting the above technical solution, the setting of the scale further clarifies the amount of debris accumulated in the first screen tube. When the scale reaches the maximum value, the cleaning personnel must open the sewage door to clean up, so as to ensure the first screen tube to filter the sewage efficiently.

Optionally, a waterproof gasket is fixed on the sewage door, and the waterproof gasket is located between the sewage door and the water collection tank.

By adopting the above technical solution, the provision of the waterproof gasket improves the sealing performance of the sewage door when it is closed, and prevents the sewage from penetrating into the outside of the sump through the sewage door.

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

1. The setting of the cleaning component cleans the adhering sundries on the inner wall of the first sieve cylinder, which ensures the filtering effect of the first sieve cylinder on sewage;

2. The setting of the second sieve cylinder can be adjusted to match the screening accuracy of the first sieve cylinder to the sewage. At the same time, the filtering effect can also be cancelled, and it becomes a closed pipe to assist the clean water to clean the debris on the inner wall of the first sieve cylinder, so as to ensure the follow-up of the first sieve cylinder. the filter effect used;

3. The warning component increases the amount of debris accumulated in the first sieve cylinder for maintenance personnel, which is convenient for maintenance personnel to clean up the accumulated debris in the first sieve cylinder in time, and ensures the filtration efficiency of the first sieve cylinder for sewage.

Description of drawings

FIG. 1 is an overall flow chart of an embodiment of the present application.

Figure 2 is a schematic diagram of the internal structure of the sump.

Fig. 3 is a vertical cross-sectional view of the internal structure of the sump.

FIG. 4 is a sectional view showing a part of the structure of the distance adjusting assembly.

Fig. 5 is a structural cross-sectional view showing the relative positions of the first screen drum and the second screen drum.

FIG. 6 is a sectional view showing a part of the structure of the cleaning assembly.

FIG. 7 is an enlarged view of part A in FIG. 3 .

Description of reference numerals: 1. Water collection tank; 11. Water inlet, 12, water outlet; 13, sewage door; 131, waterproof gasket; 14, driven wheel; 15, through groove; 16, first screen cylinder; 17, No. Second screen cylinder; 171, long hole; 172, card slot; 2, biochemical tank; 3, sedimentation tank; 4, disinfection tank; 5, water outlet; 6, drive assembly; 61, motor; 62, pulley; 7, Cleaning component; 71, scraper; 72, brush; 8, distance adjustment component; 81, bolt; 82, nut; 9, warning component; 91, bearing plate; 92, spring; 93, warning rod; 931, scale .

Detailed ways

The present application will be further described in detail below in conjunction with accompanying drawings 1-7.

The embodiment of the present application discloses a system for treating and reusing sewage in a residential area.

Referring to Fig. 1, a residential sewage treatment and reuse system includes a collection tank 1, a biochemical tank 2, a sedimentation tank 3, a disinfection tank 4 and a water outlet well 5 that are connected in sequence. The nitrification reaction is carried out in tank 2, the sewage is precipitated in sedimentation tank 3, and the sewage is disinfected in disinfection tank 4, and finally flows into outlet well 5 and can be used as daily reclaimed water, which improves the utilization rate of sewage in the community and saves water resources.

2 and 3, the water collection tank 1 is provided with a water inlet 11 and a water outlet 12, the water inlet 11 and the water outlet 12 are located on the vertical side walls of the water collection tank 1 facing each other, and the water inlet 11 is located close to the water collection tank. 1. At the top of the side wall, the water outlet 12 is located close to the bottom of the side wall of the sump 1. The sewage enters the interior of the sump 1 from the water inlet 11, and the water outlet 12 is communicated with the subsequent process. The slot 15 is opened horizontally, the through slot 15 is located above the water outlet 12, there is a distance between the through slot 15 and the water outlet 12, and the horizontal elevation of the through slot 15 is lower than the horizontal elevation of the water inlet 11; The screen cylinder 16 and the second screen cylinder 17, one end of the first screen cylinder 16 faces the water inlet 11 and completely covers the water inlet 11, and the other end of the first screen cylinder 16 faces the through groove 15 and completely covers the through groove 15. A sieve cylinder 16 has its own sieve holes, the second sieve cylinder 17 is sleeved on the outside of the first sieve cylinder 16, the second sieve cylinder 17 has its own sieve holes and the size of the sieve holes is the same as the sieve holes on the first sieve cylinder 16 The specifications are the same, that is, the first sieve drum 16 and the second sieve drum 17 are both inclined, and the inclination direction is inclined downward along the direction close to the through groove 15. The sieve 16 and the second sieve 17 filter, and the debris in the sewage remains in the first sieve 16 and is discharged through the channel 15. The filtered sewage naturally falls into the bottom of the sump 1 and flows into the water outlet 12. next process.

Referring to FIGS. 2 and 4 , a drive assembly 6 is provided in the sump 1. The drive assembly 6 includes a motor 61 and a pulley 62. The motor 61 is fixedly arranged on the inner wall of the sump 1 and is located on the same side wall of the sump 1 as the through groove 15. , the motor 61 is located above the second sieve cylinder 17, the outer wall of the second sieve cylinder 17 is provided with a clamping slot 172, the clamping slot 172 is opened along the outer wall of the second sieve cylinder 17 for a week, the center line of the clamping slot 172 and the center of the second sieve cylinder 17 The lines are collinear, and the pulley 62 is simultaneously sleeved in the rotating shaft of the motor 61 and the clamping groove 172; the driven wheel 14 is fixed on the inner wall of the sump 1, and there are four driven wheels 14, and every two is a group, divided into two. Groups of adjacent driven wheels 14 are located below both ends of the second sieve cylinder 17 respectively, adjacent driven wheels 14 in a single group are located on both sides directly below the second sieve cylinder 17, and the driven wheels 14 are connected to the outer wall of the second sieve cylinder 17. Abutting, the driving assembly 6 drives the second screen drum 17 to rotate, and the four driven wheels 14 support the second screen drum 17 and ensure the smooth rotation of the second screen drum 17 .

4 and 5, a distance adjustment assembly 8 is provided between the second screen drum 17 and the first screen drum 16, the distance adjustment assembly 8 is located at the position of the second screen drum 17 close to the water inlet 11, and the distance adjustment assembly 8 includes a bolt 81 and nut 82, the second sieve cylinder 17 is provided with elongated holes 171, the elongated holes 171 are opened along the rotation direction of the second sieve cylinder 17, and the length of the opening is sufficient to make the sieve holes on the second sieve cylinder 17 and the first sieve cylinder. The sieve holes on the 16 are completely overlapped and completely dislocated. The bolts 81 are embedded and fixed on the inner wall of the first sieve cylinder 16. The ends of the bolts 81 penetrate through the first sieve cylinder 16 and then through the elongated holes 171 and are threadedly connected with the nut 82. A gasket is arranged between the outer walls of the second screen cylinder 17 to enhance the firmness of the threaded connection between the nut 82 and the bolt 81. The operation of the distance adjustment assembly 8 is simple and convenient. After the position of the second screen cylinder 17 is adjusted relative to the first screen cylinder 16 , so that the first sieve drum 16 follows the second sieve drum 17 to rotate at the same time, which improves the efficiency of sewage filtration.

3 and 6 , a cleaning assembly 7 is provided in the first screen cylinder 16, and the cleaning assembly 7 includes a scraper 71 and a brush 72, and the scraper 71 and the brush 72 are inclined in accordance with the length direction of the first screen cylinder 16, One end of the scraper 71 and one end of the brush 72 are fixedly connected to the inner wall of the sump 1 above the water inlet 11, and the other end is fixedly connected to the inner wall of the sump 1 above the through groove 15, and the scraper 71 is connected to the inner wall of the first screen cylinder 16. The bristles of the brush 72 are also in contact with the inner wall of the first screen cylinder 16, and the brush 72 is fixedly connected with the scraper 71. In this embodiment, the connecting rod is used to fix the brush 72 and the scraper 71. Other methods are adopted; the scraper 71 is inclined to the side wall facing and away from the rotation direction of the first screen cylinder 16, and the inclined direction is inclined downward along the direction toward the centerline of the first screen cylinder 16 and finally converges together, so that the scraper 71 The scraped debris is more likely to fall off the inclined side wall of the scraper 71, and the first screen drum 16 can be rotated clockwise or counterclockwise.

3 and 7 , a warning component 9 is arranged in the water collection tank 1, and the warning component 9 is located in the through groove 15. The groove 15 is opened for one week, the sewage door 13 is adapted to the stepped groove, a waterproof gasket 131 is arranged between the sewage door 13 and the stepped groove, and the waterproof gasket 131 is fixedly connected with the sewage door 13. When the sewage door 13 is closed, the sewage door 13 The side wall facing away from the interior of the sump 1 is coplanar with the outer wall of the sump 1, and the side wall of the sewage door 13 facing the interior of the sump 1 is still located inside the through groove 15; the warning assembly 9 includes a pressure bearing plate 91, a spring 92 and a warning rod 93 , the pressure-bearing plate 91 is arranged vertically, the horizontal projection of the pressure-bearing plate 91 coincides with the horizontal projection of the through groove 15, the outer wall of the pressure-bearing plate 91 is in contact with the inner wall of the through-slot 15, there is a distance between the pressure-bearing plate 91 and the sewage door 13, the spring 92 and the warning rod 93 are both located between the pressure-bearing plate 91 and the blowdown door 13, the warning lever 93 is arranged horizontally, one end of the warning lever 93 is fixedly connected with the pressure-bearing plate 91, the other end completely penetrates the blowdown door 13, and the spring 92 is sleeved on the warning lever 92. Outside the rod 93, one end of the spring 92 is fixedly connected with the pressure-bearing plate 91, and the other end is fixedly connected with the sewage door 13. When the spring 92 is in the original length state, the side wall of the pressure-bearing plate 91 facing the inside of the sump 1 is in common with the inner wall of the sump 1. The end face of the warning rod 93 away from the pressure-bearing plate 91 is coplanar with the side of the sewage door 13 away from the pressure-bearing plate 91; The debris accumulates at the pressure-bearing plate 91, and pushes the pressure-bearing plate 91 to move close to the sewage discharge door 13, so that the end of the warning rod 93 protrudes from the sewage discharge door 13, and the protruding length can be displayed by a scale 931, thereby alerting maintenance personnel. Open the sewage gate 13 in time to clear the debris in the first screen cylinder 16 to ensure the efficiency of the first screen cylinder 16 to filter sewage.

The implementation principle of a residential sewage treatment and reuse system in the embodiment of the present application is as follows: sewage enters from the water inlet 11, the driving component 6 cooperates with the distance adjustment component 8 to rotate the first screen cylinder 16 and the second screen cylinder 17 at the same time, and the sewage is removed by the first screen cylinder 16 and the second screen cylinder 17. The first sieve cylinder 16 and the second sieve cylinder 17 are filtered, and the filtered debris follows the inclined inner wall of the first sieve cylinder 16 and rolls down to the bearing plate 91. While the first sieve cylinder 16 rotates, the cleaning assembly 7 continues to The inner wall of the first screen cylinder 16 is cleaned to keep the inner wall of the first screen cylinder 16 clean. When the warning rod 93 protrudes from the scale 931 of the sewage discharge door 13 and reaches its peak value, the maintenance personnel open the sewage discharge door 13 to clean the debris in the first screen cylinder 16 in time. Clean up to ensure the efficiency of the first sieve cylinder 16 to filter the sewage, the sewage then flows into the biochemical tank 2, the sedimentation tank 3, the disinfection tank 4 and the water outlet well 5, and finally completes the sewage treatment. The linear debris with strong adhesion should be cleaned up in time to ensure the effect of the sewage removal efficiency in the sump 1.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims (10)

1. The utility model provides a district sewage treatment recycling system, includes that the intercommunication sets up in proper order catch basin (1), biochemical pond (2), sedimentation tank (3), disinfection pond (4) and outlet well (5), its characterized in that: the water collecting tank (1) is provided with a water inlet (11), a water outlet (12) and a sewage discharging door (13), the water inlet (11) and the sewage discharging door (13) are positioned on the opposite vertical side wall of the water collecting tank (1), a first screen drum (16) is rotatably arranged in the water collecting tank (1), one end of the first screen drum (16) is covered with the water inlet (11), the other end of the first screen drum is covered with the sewage discharging door (13), the level of the water inlet (11) is higher than the level of the sewage discharging door (13), a driving assembly (6) for rotating the first screen drum (16) is fixedly arranged in the water collecting tank (1), a cleaning assembly (7) is fixedly arranged in the first screen drum (16), the cleaning assembly (7) comprises a scraper (71) and a brush (72), one end of the scraper (71) and the brush (72) is fixedly connected with the inner wall of the water collecting tank (1) above the water inlet (11), and the other end of the first screen drum is fixedly connected with the inner wall of the water collecting tank (1) above the sewage discharging door (13), the scraper (71) and the brush (72) are abutted against the inside of the top of the first screen cylinder (16).

2. The community sewage treatment and recycling system according to claim 1, wherein: the first screen drum (16) is obliquely arranged, the oblique direction inclines downwards along the direction far away from the water inlet (11), and the cleaning assembly (7) is arranged in a manner of conforming to the oblique mode of the first screen drum (16).

3. The community sewage treatment and recycling system according to claim 1, wherein: first sieve section of thick bamboo (16) outer wall ring cover has a second sieve section of thick bamboo (17), and a second sieve section of thick bamboo (17) inner wall and a first sieve section of thick bamboo (16) outer wall butt, and a second sieve section of thick bamboo (17) self sieve mesh and a first sieve section of thick bamboo (16) self sieve mesh coincide completely are provided with between a second sieve section of thick bamboo (17) and a first sieve section of thick bamboo (16) and supply a second sieve section of thick bamboo (17) to rotate or fixed roll adjustment subassembly (8) relative a first sieve section of thick bamboo (16).

4. The community sewage treatment and recycling system according to claim 3, wherein: the roll adjustment assembly (8) comprises a bolt (81) and a nut (82), a strip hole (171) is formed in the second screen drum (17), the strip hole (171) is formed in the rotating direction of the second screen drum (17), the bolt (81) is embedded and fixed on the inner wall of the first screen drum (16), and the other end of the bolt (81) penetrates through the strip hole (171) and is in threaded connection with the nut (82).

5. The community sewage treatment and recycling system according to claim 3, wherein: drive assembly (6) include motor (61) and belt pulley (62), and motor (61) are fixed to be set up on water catch bowl (1) inner wall, and belt pulley (62) tighrening ring cover is on the axis of rotation of motor (61) and second sieve section of thick bamboo (17) circumference outer wall simultaneously, and draw-in groove (172) have been seted up to second sieve section of thick bamboo (17) outer wall, and a week is seted up along second sieve section of thick bamboo (17) outer wall in draw-in groove (172), and belt pulley (62) are located draw-in groove (172).

6. The community sewage treatment and recycling system according to claim 5, wherein: the inner wall of the water collecting tank (1) is fixedly provided with driven wheels (14), the number of the driven wheels (14) is not less than two, the driven wheels are respectively located below two ends of a second screen cylinder (17), and the driven wheels (14) are abutted to the outer wall of the second screen cylinder (17).

7. The community sewage treatment and recycling system according to claim 2, wherein: the scraper (71) is arranged opposite to and away from the side wall of the rotation direction of the first screen drum (16) in an inclined mode, and the inclined direction inclines towards the center line direction of the first screen drum (16) and finally intersects with the center line direction.

8. The community sewage treatment and recycling system according to claim 2, wherein: the water collecting tank (1) is provided with a through groove (15), the through groove (15) is horizontally arranged, the sewage draining door (13) is hinged with the side wall of the water collecting tank (1) and completely covers the through groove (15), the water collecting tank (1) is provided with a warning assembly, the warning assembly comprises a pressure bearing plate (91), a spring (92) and a warning rod (93), the pressure bearing plate (91) is vertically arranged, the vertical projection of the pressure bearing plate (91) is superposed with the vertical projection of the through groove (15), the pressure bearing plate (91) is positioned in the through groove (15), a distance exists between the pressure bearing plate (91) and the sewage draining door (13), the spring (92) is horizontally arranged, the spring (92) and the warning rod (93) are both positioned between the pressure bearing plate (91) and the sewage draining door (13), one end of the spring (92) is fixedly connected with the pressure bearing plate (91), the other end of the spring is fixedly connected with the sewage draining door (13), the warning rod (93) is horizontally arranged, one end of the warning rod (93) is fixedly connected with the pressure bearing plate (91), the other end runs through blowdown door (13), and under spring (92) original length state, bearing plate (91) just to the inside lateral wall of catch basin (1) and the coplanar of place catch basin (1) inner wall, warning pole (93) deviate from the terminal surface of bearing plate (91) one end and the inside lateral wall coplanar of catch basin (1) of blowdown door (13).

9. The community sewage treatment and recycling system according to claim 8, wherein: spring (92) ring cover is in warning pole (93) outside, has seted up scale (931) on warning pole (93).

10. The community sewage treatment and recycling system according to claim 1, wherein: a waterproof gasket (131) is fixedly arranged on the sewage discharging door (13), and the waterproof gasket (131) is positioned between the sewage discharging door (13) and the water collecting tank (1).

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