Rural sewage pretreatment device convenient to clean

Abstract

The utility model discloses a rural sewage pretreatment device convenient to clean, and relates to the technical field of sewage treatment.The rural sewage pretreatment device comprises a pretreatment box, a first rotating shaft and a second rotating shaft are rotationally connected in the pretreatment box, rotating rollers are fixedly connected to the outer wall of the first rotating shaft and the outer wall of the second rotating shaft in a sleeved mode, and filter belts are connected to the outer walls of the two rotating rollers in a sleeved mode; a plurality of grid plates are fixedly connected to the surface of the filter belt, a flow guide plate is fixedly arranged on the side, close to the upper end, of the filter belt, a conveying mechanism is arranged on the other side of the flow guide plate, a water inlet pipe and a water outlet pipe are fixedly connected to the two sides of the pretreatment box respectively, and a collecting box is arranged on one side of the pretreatment box. According to the sewage pretreatment device, the effect of timely discharging and collecting impurities on the filter belt is achieved, and the problem that the impurities in a traditional sewage pretreatment device stay on a filter screen for a long time, so that the filter screen is blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a rural sewage pretreatment device which is easy to clean. Background Art

[0002] Sewage treatment is a process of purifying sewage so that it meets the water quality requirements for discharge into a water body or reuse. In the process of rural sewage treatment, sewage needs to be pre-treated to separate the solid matter in the sewage to facilitate subsequent sewage treatment.

[0003] At present, the debris separated by the sewage pretreatment device stays on the filter screen, which is inconvenient to clean the filter screen during the operation of the device. If the filter screen is not treated for a long time, it will cause the filter screen holes to be blocked, which will reduce the sewage treatment efficiency. At the same time, since most of the filters are fixedly installed in the treatment equipment, there is a problem of difficulty in taking them out, which affects the cleaning of the filter screen. Based on this, we propose an improved rural sewage pretreatment device that is easy to clean. Utility Model Content

[0004] The main purpose of the utility model is to provide a rural sewage pretreatment device which is easy to clean and can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A rural sewage pretreatment device that is easy to clean, comprises a pretreatment box, wherein a first rotating shaft and a second rotating shaft are rotatably connected in the pretreatment box, and rotating rods are fixedly sleeved on the outer walls of the first rotating shaft and the second rotating shaft, and filter belts are sleeved on the outer walls of the two rotating rods, and a plurality of grid plates are fixedly connected to the surface of the filter belt, and a guide plate is fixedly provided at a position on one side of the filter belt near the upper end, and a conveying mechanism is provided on the other side of the guide plate, and a water inlet pipe and a water outlet pipe are fixedly connected on both sides of the pretreatment box, and a collecting box is provided on one side of the pretreatment box, and the collecting box is provided at a position below one side of the conveying mechanism.

[0007] As a further solution of the utility model, a plurality of the grating plates are evenly distributed on the surface of the filter belt, a groove is provided on one side of the upper end surface of the pretreatment box bottom plate, and the movement track of the grating plates and the inner wall of the groove are matched with each other.

[0008] As a further solution of the utility model, the conveying mechanism includes two conveying shafts, and conveyor belts are sleeved on the outer walls of the two conveying shafts. The conveyor belts are made of a mesh structure.

[0009] As a further solution of the utility model, the rotating shaft 1 located on the upper layer and the rear end of one of the conveying shafts both pass through the rear plate of the pretreatment box and are fixedly sleeved with synchronous wheels, and synchronous belts are sleeved on the outer walls of the two synchronous wheels, and the synchronous belts are respectively meshed with the two synchronous wheels.

[0010] As a further solution of the utility model, a motor is fixedly connected to the upper end of the pretreatment box, and pulley one and pulley two are fixedly sleeved on the output end of the motor and the outer wall of the front end of the rotating shaft respectively, and belts are sleeved on the outer walls of pulley one and pulley two, and the diameter of pulley one is larger than the diameter of pulley two.

[0011] As a further solution of the utility model, a barrier curtain is fixedly connected to one side of the pretreatment box, and the barrier curtain is arranged at a position on one side of the upper end of the conveying mechanism.

[0012] As a further solution of the utility model, the height of the uppermost end of the guide plate is less than the height of the uppermost end of the filter belt, and the height of the lowermost end of the guide plate is greater than the height of the upper end surface of the conveying mechanism.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting up a filter belt, a grid plate, a guide plate and a conveying mechanism, the sewage entering the pretreatment box through the water inlet pipe can be filtered through the filter belt, and at the same time, the debris generated by the filtration can be transmitted upward through the grid plate, and finally guided to the conveying mechanism through the guide plate, and then transported out of the device for centralized treatment. In this way, the self-cleaning effect of the filter structure can be effectively realized, and the debris can be sent away, so as to avoid the problem that the debris accumulates on the filter net for a long time, causing the filter net holes to be blocked, and the sewage treatment efficiency is reduced;

[0015] By discharging the debris from the pretreatment box in time, it is possible to prevent too much debris from adhering to the inner wall of the pretreatment box, making it convenient for manual cleaning of the interior of the pretreatment box later, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of one side of a rural sewage pretreatment device that is easy to clean according to the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the other side of a rural sewage pretreatment device that is easy to clean according to the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a rural sewage pretreatment device that is easy to clean according to the utility model;

[0019] Figure 4 The utility model is a front view of the internal structure of a rural sewage pretreatment device which is easy to clean.

[0020] In the figure: 1. pretreatment box; 2. water inlet pipe; 3. water outlet pipe; 4. rotating shaft 1; 5. rotating shaft 2; 6. rotating roller; 7. filter belt; 8. grid plate; 9. groove; 10. guide plate; 11. conveying mechanism; 12. conveying shaft; 13. collecting box; 14. synchronous wheel; 15. synchronous belt; 16. motor; 17. pulley 1; 18. pulley 2; 19. belt; 20. curtain. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a rural sewage pretreatment device that is easy to clean includes a pretreatment box 1, in which a rotating shaft 1 4 and a rotating shaft 2 5 are rotatably connected, and rotating rods 6 are fixedly sleeved on the outer walls of the rotating shaft 1 4 and the rotating shaft 2 5, and filter belts 7 are sleeved on the outer walls of the two rotating rods 6. A plurality of grid plates 8 are fixedly connected to the surface of the filter belt 7, and a guide plate 10 is fixedly provided at a position near the upper end of the filter belt 7. A conveying mechanism 11 is provided on the other side of the guide plate 10. An inlet pipe 2 and an outlet pipe 3 are fixedly connected on both sides of the pretreatment box 1. It should be noted that the maximum liquid level of the sewage in the pretreatment box 1 should be less than the height of the lower end of the conveying mechanism 11 to avoid the sewage from being discharged from the outlet for discharging debris. In actual design, the length of the guide plate 10 can also be shortened as needed, thereby raising the height of the conveying mechanism 11 to design the debris discharge outlet higher, so that the pretreatment box 1 can accommodate more sewage. A collecting box 13 is provided on one side of the pretreatment box 1, and the collecting box 13 is arranged at a position below one side of the conveying mechanism 11.

[0023] In this embodiment, a plurality of grating plates 8 are evenly distributed on the surface of the filter belt 7, a groove 9 is provided on one side of the upper end surface of the bottom plate of the pretreatment box 1, and the movement trajectory of the grating plates 8 and the inner wall of the groove 9 are matched with each other to prevent debris from crossing the groove 9.

[0024] In this embodiment, the conveying mechanism 11 includes two conveying shafts 12. Conveyor belts are sleeved on the outer walls of the two conveying shafts 12. The conveyor belts are made of a mesh structure to filter sewage and discharge the sewage to the bottom to prevent excessive sewage from being conveyed to the collection box 13.

[0025] In this embodiment, the rear ends of the rotating shaft 4 and one of the conveying shafts 12 pass through the rear plate of the pretreatment box 1 and are fixedly sleeved with a synchronous wheel 14. The outer walls of the two synchronous wheels 14 are sleeved with a synchronous belt 15. The synchronous belt 15 is respectively meshed with the two synchronous wheels 14. The synchronous belt 15 drives the two synchronous wheels 14 to rotate synchronously. When the rotating shaft 4 rotates, it will drive the conveying shaft 12 to rotate, and then drive the conveyor belt to rotate to transport the debris.

[0026] In this embodiment, a motor 16 is fixedly connected to the upper end of the pretreatment box 1, and a pulley 17 and a pulley 2 18 are fixedly sleeved on the output end of the motor 16 and the outer wall of the front end of the rotating shaft 4 respectively. A belt 19 is sleeved on the outer walls of the pulley 17 and the pulley 2 18. The pulley 17 drives the pulley 2 18 to rotate through the belt 19, so that the motor 16 can drive the rotating shaft 4 to rotate. The diameter of the pulley 17 is larger than the diameter of the pulley 2 18, which reduces the load of the motor 16.

[0027] In this embodiment, a barrier curtain 20 is fixedly connected to one side of the pretreatment box 1 . The barrier curtain 20 is arranged at one side of the upper end of the conveying mechanism 11 . The barrier curtain 20 has the effect of buffering debris and preventing the debris from rushing out from above the collection box 13 .

[0028] In this embodiment, the height of the top end of the guide plate 10 is less than the height of the top end of the filter belt 7, and the height of the bottom end of the guide plate 10 is greater than the height of the upper end surface of the conveying mechanism 11, which makes it convenient for the filter belt 7 to throw debris onto the guide plate 10 and then enter the conveying mechanism 11.

[0029] It should be noted that the utility model is a rural sewage pretreatment device which is easy to clean. When in use, the water inlet pipe 2 is connected to the sewage supply pipe, and the water outlet pipe 3 is connected to the drainage pipe. Then the sewage enters the pretreatment box 1 and is filtered through the filter belt 7. The debris produced by the filtration will be driven by the filter belt 7 to move the grid plate 8, and will be transported upward by the grid plate 8, and finally dropped on the guide plate 10, and then transported out of the pretreatment box 1 through the conveying mechanism 11, and finally fall into the collection box 13 for centralized collection and treatment.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A rural sewage pretreatment device that is easy to clean, comprising a pretreatment tank (1), characterized in that: A rotating shaft (4) and a rotating shaft (5) are rotatably connected in the pretreatment box (1), and rotating rods (6) are fixedly sleeved on the outer walls of the rotating shafts (4) and the rotating shafts (5). Filter belts (7) are sleeved on the outer walls of the two rotating rods (6). A plurality of grid plates (8) are fixedly connected to the surface of the filter belt (7). A guide plate (10) is fixedly arranged at a position close to the upper end of the filter belt (7), and a conveying mechanism (11) is arranged on the other side of the guide plate (10). A water inlet pipe (2) and a water outlet pipe (3) are fixedly connected on both sides of the pretreatment box (1), and a collecting box (13) is arranged on one side of the pretreatment box (1), and the collecting box (13) is arranged at a position below one side of the conveying mechanism (11).

2. A rural sewage pretreatment device that is easy to clean according to claim 1, characterized in that: A plurality of grid plates (8) are evenly distributed on the surface of the filter belt (7), a groove (9) is provided on one side of the upper end surface of the bottom plate of the pretreatment box (1), and the movement track of the grid plate (8) and the inner wall of the groove (9) are matched with each other.

3. The rural sewage pretreatment device that is easy to clean according to claim 1 is characterized by: The conveying mechanism (11) comprises two conveying shafts (12), and conveyor belts are sleeved on the outer walls of the two conveying shafts (12), and the conveyor belts are made of a mesh structure.

4. A rural sewage pretreatment device that is easy to clean according to claim 3, characterized in that: The rear ends of the rotating shaft 1 (4) and one of the conveying shafts (12) located at the upper layer both penetrate the rear plate of the pretreatment box (1) and are fixedly sleeved with a synchronous wheel (14); a synchronous belt (15) is sleeved on the outer wall of the two synchronous wheels (14); and the synchronous belt (15) is respectively meshed with the two synchronous wheels (14).

5. The rural sewage pretreatment device that is easy to clean according to claim 1 is characterized by: The upper end of the pretreatment box (1) is fixedly connected to a motor (16); a pulley (17) and a pulley (18) are respectively fixedly sleeved on the output end of the motor (16) and the outer wall of the front end of the rotating shaft (4); a belt (19) is sleeved on the outer walls of the pulley (17) and the pulley (18); the diameter of the pulley (17) is larger than the diameter of the pulley (18).

6. The rural sewage pretreatment device that is easy to clean according to claim 1 is characterized by: A barrier curtain (20) is fixedly connected to one side of the pretreatment box (1), and the barrier curtain (20) is arranged at a position on one side of the upper end of the conveying mechanism (11).

7. The rural sewage pretreatment device that is easy to clean according to claim 1 is characterized by: The height of the uppermost end of the guide plate (10) is less than the height of the uppermost end of the filter belt (7), and the height of the lowermost end of the guide plate (10) is greater than the height of the upper end surface of the conveying mechanism (11).

Images