CN116966676A - A kind of sewage treatment device for building construction - Google Patents

Abstract

The invention relates to the technical field of building engineering sewage treatment, and discloses a sewage treatment device for building construction, which comprises a sewage sedimentation tank, wherein a screening mechanism is arranged on one side of the top of the sewage sedimentation tank and is used for separating large-particle impurities in sewage, a sludge pollution discharge mechanism is arranged at the bottom of the sewage sedimentation tank and is used for compressing and discharging sludge precipitated in the sewage sedimentation tank; according to the invention, the screening mechanism is arranged to clean and separate large-particle impurities in sewage, so that the sewage enters the sewage sedimentation tank to be sedimentated and separated, and the impact force generated when the sedimentated sewage falls down through the top of the partition plate is used to impact the rotary water wheel so as to drive the rotary water wheel to rotate, thereby providing driving force for the rotation of the scraper plate, and realizing the pushing and concentration of sludge generated by sedimentation at the bottom of the sewage sedimentation tank through the rotation of the scraper plate.

Description

A kind of sewage treatment device for building construction

Technical field

The present invention relates to the technical field of sewage treatment in construction projects, specifically a sewage treatment device for building construction.

Background technique

During the construction process, a large amount of slurry sewage is usually produced. When the sewage flows on the ground, various debris will follow the floating flow and enter the sewage treatment device. For sewage treatment in construction sites, screening, After sedimentation, treatment is performed to remove sediment and floating debris contained in the sewage.

When the sewage generated by existing building construction settles, some floating debris will float on the top of the sedimentation tank. The conventional method is to install a rotating scraper and drive it with a drive motor to orient the sedimented sediment and floating debris. Scraping to separate, and in the actual application process, the sewage treatment in the sedimentation tank is real-time, so that the scraper also runs uninterrupted to remove sediment and floating debris, causing the drive motor to not stop. Operation requires a large amount of additional electricity consumption. At the same time, after the existing construction sewage settles, the sediment contains a large amount of water. A large amount of water will be taken away during the sediment discharge process, making the separation of sludge and sewage incomplete.

Contents of the invention

The purpose of the present invention is to provide a sewage treatment device for building construction to solve the problem that in the structure of the existing construction sewage sedimentation and separation device proposed in the above-mentioned background technology, the discharge of sediment and the separation of floating objects require an additional consumption of a large amount of electric energy, and at the same time Issues related to insufficient separation of sludge and water during sediment discharge.

In order to achieve the above object, the present invention provides the following technical solution: including a sewage sedimentation tank, a screening mechanism is provided on one side of the top of the sewage sedimentation tank, and the screening mechanism is used to separate large particles of debris in the sewage. A sludge discharge mechanism is provided at the bottom of the sewage sedimentation tank. The sludge discharge mechanism is used to compress and discharge the sludge precipitated inside the sewage sedimentation tank. A scraper mechanism is provided inside the sewage sedimentation tank, so The scraper mechanism is used for directional transportation of separated floating objects and sedimented sludge inside the sewage sedimentation tank.

Preferably, the screening mechanism includes a water inlet port arranged on one side of the top of the sewage sedimentation tank, a support plate is provided at the bottom of one side of the inner wall of the water inlet port, and two sets of support springs B are provided on the top of the support plate, There are two sets of support springs A on the other side of the inner wall of the water inlet port. A separation screen plate is provided on the top of the support spring A and the support spring B. The inner wall of the sewage sedimentation tank is close to the bottom of the separation screen plate. A guide plate is provided at the bottom of the guide plate at both ends of the inner wall of the sewage sedimentation tank. A support block is provided at the bottom of the guide plate at both ends of the inner wall of the sewage sedimentation tank. A separation box is provided on one side of the sewage sedimentation tank and is interconnected with the drainage pipe. A separation channel is formed between the tank and the sewage sedimentation tank. The output end of the separation screen plate extends to the inside of the separation tank, and a one-way baffle is provided in the middle of the separation tank. A screening mechanism is provided to filter the sewage. Large particles of debris are separated to achieve preliminary treatment of sewage.

Preferably, the sludge discharge mechanism includes a sludge collection bin located at the bottom of the sewage sedimentation tank near the separation box. The bottom of the sludge collection bin u is provided with a support bottom plate, and the top of the support bottom plate is supported. There is a conveying bin, and one end of the bottom of the conveying bin away from the sludge collection bin is provided with a sewage outlet. One end of the conveying bin away from the sludge collection bin is provided with a support frame interconnected with the bottom of the sewage sedimentation tank. The support frame is A drive motor is provided on the other side. The output end of the drive motor extends to the interior of the conveyor bin and is provided with a conveyor auger. The input end of the conveyor auger extends to the interior of the sludge collection bin. The conveyor auger The distance between the middle blades gradually decreases from one end of the sludge collection bin to the sewage outlet, and the end of the conveying auger near the sewage outlet is higher than the end of the sludge collection bin. This is achieved by providing a sludge discharge mechanism. Centralized and directional discharge of sediment precipitated in sewage.

Preferably, the scraper mechanism includes transmission wheels evenly arranged at the top and bottom of both ends of the inner wall of the sewage sedimentation tank, and a transmission belt is provided on the outside between the sets of transmission wheels located at the same end of the inner wall of the sewage sedimentation tank. The two groups of said Scrapers are evenly arranged on the outside of the transmission belt. A collection tank is provided at the top of the sewage sedimentation tank on one side away from the water inlet port. A partition is provided on the bottom of the sewage sedimentation tank close to the collection tank, and the partition will The interior of the sewage sedimentation tank is divided into a sedimentation bin and a clean water bin. The top of the partition near the side of the clean water bin is provided with a guide baffle. The bottoms of both ends of the clean water bin are jointly provided with a transmission shaft. The transmission shaft is A rotating water wheel is provided on the outside. Both ends of the transmission shaft extend to the outside of the sewage sedimentation tank and are provided with a pulley unit interconnected with an adjacent set of transmission wheels. By providing a scraper mechanism, sedimentation of sewage is achieved. The function of directional pushing of sedimented sediment and floating debris inside the pool allows the sediment and floating debris to be cleaned intensively.

Preferably, the collection tank has a bucket-shaped structure, and the height of the input end on the side of the top of the collection tank close to the transmission belt is lower than the height of the top of the sewage sedimentation tank. One end of the back side of the collection tank is provided with an end that extends to the outside of the sewage sedimentation tank. A discharge port, and a discharge baffle is provided outside the discharge port. When the scraper is located at the top of the sewage sedimentation tank, its height is higher than the height of the input end of the collection tank. The scraper runs to the sewage sedimentation tank. When the inner bottom is in the bottom position, the bottom is close to the bottom inside the sewage sedimentation tank. The top of the partition is lower than the input end of the collection tank. The top of the partition is lower than the input end of the collection tank, so that the sewage can be discharged. Overflow can occur through the top of the partition without exceeding the input end of the collection tank.

Preferably, a sewage discharge port is provided at the bottom of the sewage sedimentation tank on one side away from the partition, and the sewage discharge port is interconnected with the inside of the sludge collection bin. A water blocking end is provided on the inside of the transport bin close to the sludge collection bin. The water blocking component prevents the sewage inside the sewage settling tank from entering the conveying bin through the sludge collection bin and being discharged.

Preferably, a drainage pipe is provided on one side of the bottom of the front end of the sewage settling tank, a control valve is provided on the outside of the drainage pipe, and a water pump is provided on the bottom of the sewage settling tank away from the separation box. The water pump The input end of the water pump extends to the bottom of the clean water tank, and the output end of the water pump is higher than the top of the sewage sedimentation tank. By setting up a water pump, the sewage inside the clean water tank can be extracted and discharged, and then transported to the next sewage treatment. program.

Compared with the existing technology, the present invention provides a sewage treatment device for building construction, which has the following beneficial effects:

1. The present invention transports sewage to be precipitated through the top of the water inlet port to the inside of the sewage sedimentation tank, so that the sewage inside the sewage sedimentation tank undergoes sedimentation and separation. As the sewage continues to increase, it overflows the top of the partition and is diverted through the diversion The diversion effect of the baffle falls on the top of the rotating water wheel. The downward impact of the water flow drives the rotating water wheel to rotate, which in turn drives the pulley units at both ends of the transmission shaft to rotate. The pulley units further drive a set of transmission belts on the outside of the transmission wheels. Rotate, thereby driving the scraper to rotate. When the scraper rotates to the top of the sewage sedimentation tank, the scraper pushes the impurities floating on the top of the sewage to the input end of the collection tank, and then falls to the inside of the collection tank. At the same time, When the scraper rotates to the bottom of the sewage sedimentation tank, the sediment deposited at the bottom of the sewage sedimentation tank is pushed by the scraper to the input end of the sludge collection bin, thereby achieving concentrated cleaning of the sediment. Through the impact of the sewage flow, It drives the scraper mechanism to operate, providing power for cleaning sediment and floating objects, reducing the demand for existing external drive motors and electricity, and improving the energy-saving performance of the device.

2. When the present invention transports sewage to the inside of the sewage sedimentation tank through the water inlet port, the large particles of debris contained in the sewage are screened through the separation sieve plate, and introduced into the inside of the separation box through the separation sieve plate, and further passed through the separation box. It is transported to the inside of the sludge collection bin for centralized discharge. The impact force of the falling sewage entering the water inlet port drives the separation screen plate to move downward and compress the support spring A and support spring B. With the rebound force of support spring A and support spring B, Under the action, the separation screen plate is reset and vibrates, thereby reducing the possibility of large particles of debris blocking the through holes of the separation screen plate.

3. The present invention drives the transmission auger to rotate by driving the motor, and transports the sediment and debris deposited inside the sludge collection bin through the transmission auger. Through the structural design of the transmission auger impeller that is continuously reduced and its position height is continuously increased, the invention can effectively The sediment is continuously squeezed, so that the water in the sediment is continuously squeezed out. At the same time, through the oblique upward action, the water flows back into the cavity of the sludge collection bin, and the squeezed and dehydrated sediment is transported to the sewage outlet. When it is at the top position, it is then discharged, which improves the dehydration effect of sediment.

Description of the drawings

Figure 1 is a schematic structural front view of the present invention;

Figure 2 is a schematic rear view of the structure of the present invention;

Figure 3 is a perspective cross-sectional view of the front structure of the present invention;

Figure 4 is a front cross-sectional view of the present invention;

Figure 5 is an enlarged schematic diagram of the structure of the scraper mechanism in the present invention;

Figure 6 is an enlarged schematic diagram of the structure of the sludge discharge mechanism in the present invention;

Figure 7 is an enlarged schematic diagram of the structure of the separation screen plate in the present invention.

In the picture: 1. Sewage sedimentation tank; 2. Separation box; 3. Drainage pipe; 4. Sludge collection bin; 5. Transport bin; 6. Support bottom plate; 7. Sewage outlet; 8. Drive motor; 9. Water pump; 10. Partition; 11. Collection tank; 12. Scraper; 13. Water inlet port; 14. Discharge baffle; 15. Transmission belt; 16. Transmission wheel; 17. Diversion baffle; 18. Rotating water wheel; 19. Pulley unit; 20. Drive shaft; 21. One-way baffle; 22. Separation channel; 23. Separation screen plate; 24. Transmission auger; 25. Support block; 26. Support spring A; 27. Support spring B ; 28. Deflector; 29. Clean water bin; 30. Support frame.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example 1:

Please refer to Figures 1-7. The present invention provides a technical solution: a sewage treatment device for construction, including a sewage sedimentation tank 1. A screening mechanism is provided on one side of the top of the sewage sedimentation tank 1. The screening mechanism is used to Separate large particles in sewage.

As a preferred solution of this embodiment: the screening mechanism includes a water inlet port 13 provided on one side of the top of the sewage sedimentation tank 1. A support plate is provided at the bottom of one side of the inner wall of the water inlet port 13, and two sets of two groups are provided on the top of the support plate. The support spring B27 is provided with two sets of support springs A26 on the other side of the inner wall of the water inlet port 13. A separation screen plate 23 is provided at the top of the support spring A26 and the support spring B27. The inner wall of the sewage sedimentation tank 1 is close to the bottom of the separation screen plate 23. A guide plate 28 is provided at the position. Both ends of the inner wall of the sewage sedimentation tank 1 are provided with a support block 25 at a position at the bottom of the guide plate 28. One side of the sewage sedimentation tank 1 is provided with a separator interconnected with the drainage pipe 3. Box 2, and a separation channel 22 is formed between the separation box 2 and the sewage sedimentation tank 1. The output end of the separation screen plate 23 extends to the inside of the separation box 2, and a one-way baffle 21 is provided in the middle of the separation box 2. , the one-way baffle 21 prevents the sewage inside the sewage sedimentation tank 1 from flowing back into the separation box 2, and a screening mechanism is provided to separate large particles of debris in the sewage to achieve preliminary treatment of the sewage.

As shown in Figure 1-4, when the device is in use, by adding sewage from the top of the water inlet port 13 to the inside of the sewage sedimentation tank 1, the impact force of the falling sewage impacts the separation screen plate 23, causing the separation screen plate to 23 moves downward to compress the support spring A26 and the support spring B27. The rebound force of the support spring A26 and the support spring B27 drives the separation screen plate 23 to reset, thereby causing the separation screen plate 23 to vibrate. Through the separation screen plate 23, large particles in the sewage are released. The granular debris is separated, and the sewage containing sediment enters the inside of the sewage sedimentation tank 1 through the separation screen plate 23 for precipitation. The large granular debris is transported to the inside of the separation box 2 through the separation screen plate 23 and falls to the inside of the separation box 2. The inside of the sludge collection bin 4.

Example 2:

The difference from Embodiment 1 is that a scraper mechanism is provided inside the sewage sedimentation tank 1 , and the scraper mechanism is used to directionally transport the separated floating objects and settled sludge inside the sewage sedimentation tank 1 .

As a preferred solution of this embodiment: the scraper mechanism includes transmission wheels 16 evenly arranged at the top and bottom of both ends of the inner wall of the sewage sedimentation tank 1, and are jointly arranged on the outside between multiple sets of transmission wheels 16 located at the same end of the inner wall of the sewage sedimentation tank 1 There is a transmission belt 15. A scraper 12 is evenly arranged on the outside of the two groups of transmission belts 15. A collection tank 11 is provided at the top of the sewage sedimentation tank 1 on one side away from the water inlet port 13. The bottom of the sewage sedimentation tank 1 is on one side close to the collection tank 11. A partition 10 is provided, and the partition 10 divides the interior of the sewage sedimentation tank 1 into a sedimentation bin and a clean water bin 29. A guide baffle 17 is provided at the top of the partition 10 near the side of the clean water bin 29. There are two internal parts of the clean water bin 29. A transmission shaft 20 is jointly provided at the bottom of both ends. A rotating water wheel 18 is provided on the outside of the transmission shaft 20. Both ends of the transmission shaft 20 extend to the outside of the sewage sedimentation tank 1 and are provided with an adjacent set of transmission wheels 16 interconnected. The pulley unit 19 is provided with an installation shaft between the middle part of the transmission pulley 16 and the sewage sedimentation tank 1. The pulley unit 19 is axially connected with the installation shaft. When the pulley unit 19 rotates, it can drive the transmission pulley 16 to rotate. By providing a scraper The plate mechanism realizes the function of directional pushing of sedimented sediment and floating debris inside the sewage sedimentation tank 1, so that the sediment and floating debris can be cleaned intensively.

As a preferred solution of this embodiment: the collection tank 11 has a bucket-shaped structure, and the height of the input end on the side of the top of the collection tank 11 close to the transmission belt 15 is lower than the height of the top of the sewage sedimentation tank 1, and one end of the back side of the collection tank 11 is provided with The discharge port extends to the outside of the sewage sedimentation tank 1, and a discharge baffle 14 is provided on the outside of the discharge port. When the scraper 12 is located at the top of the sewage sedimentation tank 1, its height is higher than the height of the input end of the collection tank 11. When the scraper 12 moves to the bottom position inside the sewage sedimentation tank 1, its bottom fits the bottom inside the sewage sedimentation tank 1. The height of the top of the partition 10 is lower than the height of the input end of the collection tank 11. The top position of the partition 10 is lower. At the input end of the collection tank 11, the sewage can overflow through the top of the partition 10 without exceeding the input end of the collection tank 11.

As a preferred solution for this embodiment: a sewage discharge port is provided on the side of the inner bottom of the sewage sedimentation tank 1 away from the partition 10 , and the sewage discharge port is interconnected with the inside of the sludge collection bin 4 , and the inside of the transport bin 5 is close to the sludge collection bin 4 A water blocking component is provided at one end of the sewage sedimentation tank 1 so that the sewage inside the sewage settling tank 1 will not enter the conveying bin 5 through the sludge collection bin 4 and be discharged.

As shown in Figure 1-5, as the sewage water level inside the sewage sedimentation tank 1 continues to rise, when it is used for the first time, the sewage water level rises to the same height as the top of the partition 10, and then the sewage transportation is suspended, so that the sewage The sewage inside the sedimentation tank 1 is settling. As the sedimentation proceeds, the floating impurities contained in the sewage also float on the water surface of the sewage, and then continue to add sewage, so that the sewage water level overflows the top of the partition 10 and then falls into the clear water. Inside the bin 29, through the diversion effect of the guide baffle 17, the impact force of the settled sewage drives the rotating water wheel 18 to rotate, and the rotation of the rotating water wheel 18 drives the transmission shaft 20 to rotate, thereby causing the transmission shaft 20 to rotate at both ends. The pulley unit 19 rotates, and the pulley unit 19 drives a set of transmission wheels 16 to rotate, and then drives the transmission belt 15 outside the transmission wheel 16 to follow the rotation, and the transmission belt 15 drives the scraper 12 to rotate. At this time, the scraper 12 is located in the sewage sedimentation tank 1 The displacement direction of the bottom is from one end of the partition 10 to one end of the sludge collection bin 4, thereby pushing the sediment settled at the bottom of the sewage sedimentation tank 1 to the inside of the sludge collection bin 4, realizing centralized cleaning of sludge. The displacement direction of the scraper 12 located at the top of the sewage sedimentation tank 1 is from one end of the water inlet port 13 to one end of the collection tank 11, and is pushed by the scraper 12, so that the debris floating on the water surface is pushed to the input end of the collection tank 11 and falls down. into the inside of the collection tank 11, thereby realizing the separation and cleaning of sediments and floating objects in the sewage, and through the design of this structure, the demand for electricity in building sewage treatment is reduced.

Example 3:

The difference from Embodiment 1 and Embodiment 2 is that a sludge discharge mechanism is provided at the bottom of the sewage sedimentation tank 1, and the sludge discharge mechanism is used to compress and discharge the sludge precipitated inside the sewage sedimentation tank 1.

As a preferred solution of this embodiment: the sludge discharge mechanism includes a sludge collection bin 4 located at the bottom of the sewage sedimentation tank 1 near the separation box 2. The bottom of the sludge collection bin 4 is provided with a supporting bottom plate 6. The supporting bottom plate The top of 6 supports a conveyor bin 5. The end of the bottom of the conveyor bin 5 away from the sludge collection bin 4 is provided with a sewage outlet 7. The end of the conveyor bin 5 away from the sludge collection bin 4 is provided with a support interconnected with the bottom of the sewage sedimentation tank 1. Frame 30, the other side of the support frame 30 is provided with a drive motor 8, the output end of the drive motor 8 extends to the inside of the conveyor bin 5 and is provided with a conveyor auger 24, the input end of the conveyor auger 24 extends to the sludge collection bin 4, the blade spacing in the conveying auger 24 gradually decreases from one end of the sludge collection bin 4 to the position of the sewage outlet 7, and the height of the end of the conveying auger 24 close to the sewage outlet 7 is higher than the sludge collection bin. At one end of 4, a sludge discharge mechanism is provided to achieve centralized and directional discharge of sediment precipitated in the sewage.

As a preferred solution of this embodiment: a drainage pipe 3 is provided on the bottom side of the front end of the sewage settling tank 1, a control valve is provided on the outside of the drainage pipe 3, and a water pump is provided on the bottom of the sewage settling tank 1 away from the separation box 2. 9. The input end of the water pump 9 extends to the bottom of the clean water tank 29, and the output end of the water pump 9 is higher than the top of the sewage sedimentation tank 1. The water pump 9 can extract the sewage inside the clean water tank 29. discharged and then transported to the next sewage treatment process.

As shown in Figures 3, 4, and 6, large particles of debris and precipitated sludge are transported to the inside of the sludge collection bin 4, and then the drive motor 8 is turned on to drive the transmission auger 24 to rotate, and the sewage is collected through the transmission auger 24. The large particles of debris and precipitated sludge inside the mud collection bin 4 are transported, and the distance between the impellers of the conveying auger 24 is continuously reduced, thereby compressing the sludge during the transportation process, so that the water in the sludge is squeezed out. Through the oblique structural design of the transport bin 5, the squeezed sewage flows back into the sludge collection bin 4, and the squeezed and dehydrated sludge is transported to the sewage outlet 7 to be discharged, thereby realizing the sewage treatment. Separation of floating debris and sludge.

Working principle: A screening mechanism is provided to clean and separate large particles of debris in the sewage, so that the sewage enters the inside of the sewage sedimentation tank 1 for sedimentation and separation, and when the settled sewage overflows the top of the partition 10 and falls The generated impact force impacts the rotating water wheel 18, driving the rotating water wheel 18 to rotate, thereby providing driving force for the rotation of the scraper 12. Through the rotation of the scraper 12, the sludge generated by settling at the bottom of the sewage sedimentation tank 1 is processed. The push is concentrated, and at the same time, the floating debris in the sewage is pushed to the inside of the collection tank 11, thereby realizing the separation of sediment and floating objects in the sewage, and the sewage falling into the clean water tank 29 is extracted through the water pump 9 and then enters In the next step of the treatment process, the precipitated sludge and large particles of debris are directed and discharged through the conveyor auger 24, thereby completing the sedimentation treatment process of construction sewage.

Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, but does not limit the protection scope of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by those of ordinary skill in the art do not deviate from the scope of the present invention. The essence and scope of the technical solution of the invention.

Claims (7)

1. A sewage treatment device for construction, including a sewage settling tank (1), characterized in that: a screening mechanism is provided on one side of the top of the sewage settling tank (1), and the screening mechanism is used to treat sewage. The large particles of debris in the sewage sedimentation tank (1) are separated. A sludge discharge mechanism is provided at the bottom of the sewage sedimentation tank (1). The sludge discharge mechanism is used to compress and discharge the sludge precipitated inside the sewage sedimentation tank (1). , a scraper mechanism is provided inside the sewage sedimentation tank (1), and the scraper mechanism is used to directional transport the separated floating matter and sedimentation sludge inside the sewage sedimentation tank (1). 2. A sewage treatment device for construction according to claim 1, characterized in that: the screening mechanism includes a water inlet port (13) arranged on one side of the top of the sewage sedimentation tank (1), and the inlet port (13) is The bottom of one side of the inner wall of the water port (13) is provided with a support plate, and the top of the support plate is provided with two sets of support springs B (27). The other side of the inner wall of the water inlet port (13) is provided with two sets of support springs B (27). Spring A (26), the top of the support spring A (26) and the support spring B (27) are jointly provided with a separation screen plate (23), and the inner wall of the sewage sedimentation tank (1) is close to the bottom of the separation screen plate (23) A guide plate (28) is provided at the position of ) is provided with a separation box (2) interconnected with the drainage pipe (3) on one side, and a separation channel (22) is formed between the separation box (2) and the sewage sedimentation tank (1). The separation screen plate The output end of (23) extends to the inside of the separation box (2), and a one-way baffle (21) is provided in the middle of the inside of the separation box (2). 3. A sewage treatment device for construction according to claim 2, characterized in that: the sludge discharge mechanism includes a sludge collection device located at the bottom of the sewage sedimentation tank (1) near the separation box (2) Bin (4), the bottom of the u side of the sludge collection bin (4) is provided with a supporting bottom plate (6), and the top of the supporting bottom plate (6) supports a conveying bin (5). The conveying bin (5) ) is provided with a sewage outlet (7) at one end of the bottom away from the sludge collection bin (4), and an end of the conveyor bin (5) away from the sludge collection bin (4) is provided with a sewage discharge port (7) connected to the bottom of the sewage sedimentation tank (1) A support frame (30) is provided with a drive motor (8) on the other side of the support frame (30). The output end of the drive motor (8) extends to the inside of the conveyor bin (5) and is provided with a conveyor auger. (24), the input end of the transfer auger (24) extends to the inside of the sludge collection bin (4), and the blade spacing in the transfer auger (24) starts from one end of the sludge collection bin (4) to The position of the sewage outlet (7) gradually decreases, and the height of the end of the transmission auger (24) close to the sewage outlet (7) is higher than the end of the sludge collection bin (4). 4. A sewage treatment device for construction according to claim 1, characterized in that the scraper mechanism includes transmission wheels (16) evenly arranged on the top and bottom of both ends of the inner wall of the sewage sedimentation tank (1), Moreover, a transmission belt (15) is provided on the outside between multiple sets of transmission wheels (16) located at the same end of the inner wall of the sewage sedimentation tank (1), and a scraper (12) is evenly provided on the outside of the two groups of transmission belts (15). A collection tank (11) is provided at the top of the sewage sedimentation tank (1) on one side away from the water inlet port (13), and a partition is provided on one side of the bottom of the sewage sedimentation tank (1) close to the collection tank (11). (10), and the partition (10) divides the inside of the sewage sedimentation tank (1) into a sedimentation bin and a clean water bin (29). The top of the partition (10) near the clean water bin (29) is provided with a guide. A flow baffle (17) is provided with a transmission shaft (20) at the bottom of both ends of the clean water tank (29). A rotating water wheel (18) is provided outside the transmission shaft (20). The transmission shaft (20) is provided with a rotating water wheel (18). Both ends of 20) extend to the outside of the sewage sedimentation tank (1) and are provided with pulley units (19) interconnected with an adjacent set of transmission wheels (16). 5. A sewage treatment device for construction according to claim 4, characterized in that: the collection tank (11) is a bucket-shaped structure, and the top of the collection tank (11) is input on one side close to the transmission belt (15) The height of the end position is lower than the height of the top of the sewage sedimentation tank (1). One end of the back of the collection tank (11) is provided with a discharge port extending to the outside of the sewage sedimentation tank (1), and the outside of the discharge port is provided with Discharge baffle (14). When the scraper (12) is located at the top of the sewage sedimentation tank (1), its height is higher than the height of the input end of the collection tank (11). The scraper (12) runs to the sewage When the bottom of the sedimentation tank (1) is in the internal bottom position, the bottom is close to the bottom of the sewage sedimentation tank (1), and the height of the top of the partition (10) is lower than the height of the input end of the collection tank (11). 6. A sewage treatment device for construction according to claim 3, characterized in that: a sewage discharge port is provided at the inner bottom of the sewage sedimentation tank (1) away from the partition (10), and the sewage discharge port is connected to the sewage settling tank (1). The interiors of the sludge collection bins (4) are interconnected, and a water blocking component is provided on the inside of the transport bin (5) close to one end of the sludge collection bin (4). 7. A sewage treatment device for construction according to claim 4, characterized in that: a drainage pipe (3) is provided on one side of the bottom of the front end of the sewage sedimentation tank (1), and the drainage pipe (3) 3) is provided with a control valve outside, and a water pump (9) is provided at the bottom of the side of the sewage sedimentation tank (1) away from the separation box (2). The input end of the water pump (9) extends to the clean water bin (29) The bottom of the interior, and the height of the output end of the water pump (9) is higher than the height of the top of the sewage sedimentation tank (1).