A domestic sewage collection and purification system

Abstract

The present invention discloses a domestic sewage collection and purification system, comprising a water storage tank, a scraping mechanism, and a collection assembly. The scraping mechanism is provided with a scraping member, a limiting assembly, a connecting rod, and a mounting member. The collection assembly is provided with a collection box, a collection member, and a baffle. The drive shaft drives the scraping mechanism to rotate on the isolation ring and lifts the scraping mechanism through the guide arc plate. The scraping member is blocked by the baffle, and the scraping member is kept rotating 180° around the limiting assembly. The domestic sewage collection and purification system can scrape the surface impurities of the water storage tank through the scraping mechanism and then transfer them to the collection assembly. The scraping member can be flipped in conjunction with the limiting assembly to flip the collected impurities into the collection box. Not only can the flipping position and angle of the scraping member be limited by the limiting assembly, but it can also avoid the scraping of impurities affected by the use of bearings that makes it difficult for the scraping member to rotate, thereby improving the efficiency of purifying domestic sewage.

Description

Technical Field

[0001] The present invention relates to sewage purification technology, in particular to a domestic sewage collection and purification system. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to meet the required water quality for discharge into a water body or reuse. Wastewater treatment is widely used in various fields, including construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscapes, healthcare, and catering, and is increasingly becoming part of everyday life.

[0003] Domestic sewage is mixed with various impurities and larger wastes. It is necessary to collect the impurities and wastes floating on the surface of domestic sewage so as to start the next step of sewage purification. Summary of the Invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes a domestic sewage collection and purification system.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A domestic sewage collection and purification system, comprising:

[0007] A water tank, wherein a water storage area is formed in the middle of the water tank, an isolation ring is provided in the middle of the water storage area, a guide arc plate is provided on the isolation ring, an installation chamber is formed in the middle of the isolation ring, a driving member is provided in the installation chamber, and a driving shaft is provided on the driving member;

[0008] A scraping mechanism for scraping impurities from the surface of a water tank, the scraping mechanism being connected to a drive shaft and provided with a scraping member, a limiting assembly, a connecting rod, and a mounting member. The mounting member is connected to the drive shaft, the limiting assembly is connected to the mounting member via a connecting rod, and the scraping member is connected to the limiting assembly. When the scraping member rotates, the limiting assembly limits the rotation angle, keeping it in an inclined state in the water storage area to scrape impurities from the surface;

[0009] and a collecting assembly arranged on a water tank, wherein a symmetrically arranged partition is provided in the middle of the water tank, a fixed chamber is formed between the partitions, the collecting assembly is arranged in the fixed chamber, a drain pipe is further provided in the fixed chamber, a discharge channel is formed in the middle of the drain pipe, an opening is provided at the lower end of the partition that communicates with the discharge channel, the collecting assembly is provided with a collecting box, a collecting member and a baffle, the collecting box is installed in the fixed chamber, the collecting member is provided in the collecting box and is connected to the drive shaft through an isolation ring, the baffle is provided in the collecting box and is at the upper end of the collecting member, a first bevel gear is provided on the drive shaft, and a second bevel gear that cooperates with the first bevel gear is provided on the collecting member;

[0010] The driving member drives the driving shaft to rotate, and the driving shaft drives the scraping mechanism to rotate on the isolation ring and lifts the scraping mechanism through the guide arc plate. The scraping member is blocked by the baffle, keeping the scraping member rotating 180° around the limiting assembly.

[0011] In the present invention, the driving shaft is provided with a connecting block, the connecting block is provided with a limiting portion, and the mounting member is provided with an arc-shaped opening cooperating with the driving shaft, a first connecting groove cooperating with the connecting block, and a limiting hole cooperating with the limiting portion.

[0012] In the present invention, the guide arc plate is provided with a first guide arc surface, a first arc-shaped surface and a second guide arc surface, and the isolation ring is provided with a second arc surface that is shaped like the first guide arc surface and the second guide arc surface.

[0013] In the present invention, the scraping member is composed of a scraping plate and a collection end arranged rotationally symmetrically, a collection chamber is formed inside the collection end, the cross section of the collection end is triangular, and a drainage slit is also provided on the collection end, and the drainage slit is connected to the collection chamber.

[0014] In the present invention, the scraping plate is arranged at an angle, and the inclination angle of the scraping plate is 4°.

[0015] In the present invention, a guide inclined plate is provided on one of the partitions.

[0016] In the present invention, the limiting assembly is provided with a limiting seat, a rotating member, a rotating member, an adjusting member and an elastic member. The limiting seat is connected to the connecting rod, the rotating member is hinged on the limiting seat, the elastic member is sleeved on the adjusting member and is at the upper end of the rotating member, the adjusting member passes through the rotating member and is connected to the limiting seat, the rotating member is located between the rotating member and the limiting seat, one end of the rotating member is connected to the connecting rod, and the other end is connected to the scraping member.

[0017] In the present invention, the limit seat is provided with a threaded hole, a rotating mouth, a limit mouth and a hinge port. The hinge port and the limit mouth are connected by a second connecting groove. A symmetrically arranged inclined surface is provided in the rotating mouth. The rotating part is located in the rotating mouth. The limit seat is also provided with an avoidance surface.

[0018] In the present invention, the rotating member consists of a pressure section, a vertical section, a transverse section, a connecting section and a hinged portion, the transverse section is located in the limiting opening, the connecting section is located in the second connecting groove, the hinged portion is located in the hinged port, and a through hole is provided on the pressure section.

[0019] In the present invention, the rotating part is composed of a rotating rod and a rotating body. The rotating rod connects the connecting rod with the scraping part. The rotating body is located in the rotating mouth and is pressurized by the pressure section. The limiting body is provided with symmetrically arranged arc surfaces and horizontal surfaces.

[0020] The domestic sewage collection and purification system of the present invention has the following beneficial effects: The system can scrape impurities from the surface of the water tank using a scraping mechanism, then transfer them to a collection assembly. Furthermore, the scraping member can be turned over by a stop assembly to dump the collected impurities into a collection tank. The stop assembly not only limits the scraping member's turning position and angle, but also prevents the scraping member from being difficult to rotate due to the use of bearings, which could affect the scraping of impurities. This improves the efficiency of domestic sewage purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the domestic sewage collection and purification system of the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 for Figure 2 The cross-sectional view at AA in the figure;

[0024] Figure 4 for Figure 1 Schematic diagram of the water storage tank structure;

[0025] Figure 5 for Figure 4 A local enlarged view of point B in FIG;

[0026] Figure 6 Schematic diagram of the structure of the driving member, scraping mechanism and collecting assembly in the present invention;

[0027] Figure 7 for Figure 6 Schematic diagram of the collection component structure in;

[0028] Figure 8 for Figure 6 Schematic diagram of the driving member and scraping mechanism structure;

[0029] Figure 9 for Figure 8 A local enlarged view of point C in FIG;

[0030] Figure 10 for Figure 8 Schematic diagram of the limit component structure in;

[0031] Figure 11 for Figure 10 The main perspective view;

[0032] Figure 12 for Figure 10 Exploded diagram;

[0033] Figure 13 for Figure 12 Schematic diagram of the rotating part structure;

[0034] Figure 14 for Figure 12 Schematic diagram of the limit seat structure;

[0035] Figure 15 for Figure 12 Schematic diagram of the rotating part structure;

[0036] Figure 16 Schematic diagram of the scraping member structure of the present invention;

[0037] Figure 17 for Figure 16 The main perspective view;

[0038] Figure 18 for Figure 16 Another structural diagram of ;

[0039] Figure 19 Schematic diagram of the main view of the collecting assembly, scraping mechanism and driving member in the present invention;

[0040] Figure 20 Schematic diagram of the moving state of the scraping member in the present invention.

[0041] In the figure: water tank 1, scraping mechanism 2, collecting assembly 3, drainage pipe 4, scraping member 5, water storage area 6, isolation ring 7, driving member 8, guide arc plate 9, first guide arc surface 10, first arc surface 11, second guide arc surface 12, second arc surface 13, connecting rod 14, mounting chamber 15, driving shaft 16, limiting assembly 17, mounting member 18, connecting block 19, limiting portion 20, arc opening 21, first connecting groove 22, limiting hole 23, scraping plate 24, collecting end 25, collecting chamber 26, drainage slit 27, limiting seat 28, rotating member 29, rotating member 30, adjusting member 31, elastic member 32, threaded hole 33, rotating opening 34, limiting Mouth 35, hinged mouth 36, second connecting groove 37, inclined surface 38, arc surface 39, avoidance surface 40, pressure section 41, vertical section 42, transverse section 43, connecting section 44, hinged portion 45, through hole 46, rotating rod 47, rotating body 48, horizontal surface 49, rotating portion 50, rod body 51, threaded portion 52, limiting sleeve 53, baffle 54, partition 55, guide inclined plate 56, reinforcement plate 57, guide inclined surface 58, fixed chamber 59, drain pipe 60, discharge channel 61, opening 62, collecting box 63, collecting piece 64, first bevel gear 65, second bevel gear 66, discharge port 67, rotating shaft 68, screw member 69, side plate 70. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0043] like Figures 1 to 20 As shown, the domestic sewage collection and purification system of the present invention includes a water tank 1, a scraping mechanism 2 and a collection component 3. The water tank 1 is used to temporarily store domestic sewage discharged through the drainage pipe 4. Various impurities, floating objects and wastes are present in the sewage. It is necessary to collect the impurities, floating objects and wastes on the surface to facilitate the next purification operation. The scraping mechanism 2 can rotate 360° under the drive of the driving member 8, so as to scrape the impurities in the water tank 1, and can keep the scraping member 5 at a deeper position below the water surface, so as to improve the collection efficiency. The collection component 3 is used to cooperate with the scraping mechanism 2 to transfer the impurities scraped by the scraping member 5 out of the water tank 1 for collection.

[0044] A water storage area 6 is formed in the center of the water tank 1. An isolation ring 7 is located in the center of the water storage area 6 to separate the domestic sewage from the driving member 8. A guide arc plate 9 is provided on the isolation ring 7. The guide arc plate 9 is provided with a first guide arc surface 10, a first curved surface 11, and a second guide arc surface 12. A second curved surface 13 is provided on the isolation ring 7, connecting the first guide arc surface 10 and the second guide arc surface 12. The first curved surface 11 is connected to the second curved surface 13 via the first guide arc surface 10 and the second guide arc surface 12. The first curved surface 11 and the second curved surface 13 remain horizontal, allowing a connecting rod 14 to rotate on them. The first curved surface 11 is higher than the second curved surface 13, so that when the connecting rod 14 is on the second curved surface 13, it keeps the scraper 5 submerged in the water. When the connecting rod 14 is on the first curved surface 11, it keeps the scraper 5 above the water surface.

[0045] An installation chamber 15 is formed in the middle of the isolation ring 7 , and a driving member 8 is provided in the installation chamber 15 . The driving member 8 may be a motor, and a driving shaft 16 is provided on the driving member 8 .

[0046] The scraping mechanism 2 is used to scrape impurities on the surface of the water storage tank 1. The scraping mechanism 2 is connected to the drive shaft 16. The scraping mechanism 2 is provided with a scraping member 5, a limiting assembly 17, a connecting rod 14 and a mounting member 18. The mounting member 18 is connected to the drive shaft 16. In this application, the scraping mechanism 2 is provided at two locations, which are rotationally symmetrical, so the mounting members 18 are also provided at two locations. When the two mounting members 18 are combined, a column with an opening in the middle is formed.

[0047] The limiting assembly 17 is connected to the mounting member 18 through the connecting rod 14, and the scraping member 5 is connected to the limiting assembly 17. When the scraping member 5 rotates, the limiting assembly 17 limits the rotation angle, keeping it in an inclined state in the water storage area 6 to scrape surface impurities.

[0048] The drive shaft 16 is provided with a connecting block 19, which is provided with a limiting portion 20. The mounting member 18 is provided with an arc-shaped opening 21 that cooperates with the drive shaft 16, a first connecting groove 22 that cooperates with the connecting block 19, and a limiting hole 23 that cooperates with the limiting portion 20. The mounting member 18 is mounted on the drive shaft 16 through the cooperation between the limiting portion 20 and the limiting hole 23, and can rotate with the drive shaft 16. At the same time, the mounting member 18 can be kept moving up and down on the drive shaft 16 to change the height of the scraping member 5 so that it can be in the water or above the water surface.

[0049] The scraper 5 consists of a scraper plate 24 and a rotationally symmetrically arranged collecting end 25. The collecting end 25 defines a collection chamber 26 within which impurities guided by the scraper plate 24 enter. The collecting end 25 has a triangular cross-section. A drainage slit 27 is provided on the collecting end 25, communicating with the collecting chamber 26. This drain slit 27 allows wastewater scraped in by the scraper plate 24 to be drained, thereby retaining the impurities.

[0050] At the same time, the scraping plate 24 is tilted, and the tilt angle of the scraping plate 24 is 4 °. The scraping plate 24 is tilted to better insert one end into the water, and the impurities in the deeper position in the water are guided to the scraping plate 24 and then enter the collecting chamber 26.

[0051] like Figure 17 As shown, M is the height of the sewage surface. By controlling the water inflow and outflow, the sewage level in the water storage area 6 is kept higher than the drainage seam 27, so as to collect more impurities.

[0052] The limiting assembly 17 is provided with a limiting seat 28, a rotating member 29, a rotating member 30, an adjusting member 31 and an elastic member 32. The limiting seat 28 is connected to the connecting rod 14, the rotating member 29 is hinged on the limiting seat 28, the elastic member 32 is sleeved on the adjusting member 31 and is at the upper end of the rotating member 29, the adjusting member 31 passes through the rotating member 29 and is connected to the limiting seat 28, the rotating member 30 is located between the rotating member 29 and the limiting seat 28, one end of the rotating member 30 is connected to the connecting rod 14, and the other end is connected to the scraping member 5.

[0053] The limiting seat 28 is provided with a threaded hole 33, a rotating opening 34, a limiting opening 35 and a hinge opening 36. The hinge opening 36 is connected to the limiting opening 35 by a second connecting groove 37. A symmetrically arranged oblique surface 38 is provided in the rotating opening 34. The oblique surface 38 is tangent to the arc surface 39. The rotating member 30 is located in the rotating opening 34. The limiting seat 28 is also provided with an avoidance surface 40. The avoidance surface 40 facilitates the rotation of the rotating member 29.

[0054] The rotating member 29 consists of a pressure section 41, a vertical section 42, a transverse section 43, a connecting section 44 and a hinge portion 45. The transverse section 43 is located in the limiting opening 35, the connecting section 44 is located in the second connecting groove 37, the hinge portion 45 is located in the hinge port 36, and a through hole 46 is provided on the pressure section 41.

[0055] The rotating member 30 is composed of a rotating rod 47 and a rotating body 48. The rotating rod 47 connects the connecting rod 14 to the scraping member 5. The rotating body 48 is located in the rotating opening 34 and applies pressure through the pressure section 41. The rotating body 48 is provided with symmetrically arranged arc surfaces 39 and horizontal surfaces 49. The distance between the arc surfaces 39 is greater than the distance between the horizontal surfaces 49. Therefore, when the arc surfaces 39 contact the pressure section 41, they push the pressure section 41 upward, thereby compressing the elastic member 32.

[0056] The adjusting member 31 is composed of a rotating portion 50 and a rod body 51. The rod body 51 is provided with a threaded portion 52 that cooperates with the threaded hole 33. The rod body 51 cooperates with the through hole 46. The elastic member 32 is sleeved on the rod body 51. A limiting sleeve 53 is also provided on the outside of the rod body 51. The limiting sleeve 53 is located at the upper end of the pressure section 41 and between the elastic member 32 and the rod body 51.

[0057] like Figure 11 As shown, the dotted line N is the trajectory of the rotation of the rotating body 48. It can be seen that when the rotating body 48 rotates, it can push the pressure section 41 upward, so that the rotating member 29 rotates around the hinge portion 45 in the direction of F1, and one end of the pressure section 41 pushes the elastic member 32 upward, compresses the elastic member 32, and drives the limit sleeve 53 to move. The limit sleeve 53 can limit the rotation angle of the rotating member 29.

[0058] The rotating member 30 can rotate in the rotating opening 34, and can also cooperate with the rotating member 29 to limit the position and rotation angle of the rotating member 30, so that when the scraping member 5 is blocked by the baffle 54, the scraping member 5 can rotate around the rotating member 30. When the scraping member 5 turns over the baffle 54, the rotating member 29 can continue to contact the horizontal plane 49, thereby continuing to limit the angle and position of the scraping member 5.

[0059] At the same time, the rotating member 30 will not be unable to rotate in the rotating port 34 due to the influence of sewage, which can further improve the rotation life of the rotating member 30 and facilitate the free rotation of the scraping member 5.

[0060] The collecting assembly 3 is arranged on the water tank 1, and a symmetrically arranged partition 55 is provided in the middle of the water tank 1. A guide inclined plate 56 is provided on one of the partitions 55. The guide inclined plate 56 can cooperate with the guide arc plate 9 to guide the scraping mechanism 2, so that the guide inclined surface 58 of the collecting end 25 on the scraping member 5 in the scraping mechanism 2 is guided, keeping the scraping mechanism 2 gradually lifted upward.

[0061] A fixed chamber 59 is formed between the partitions 55, and the collecting assembly 3 is arranged in the fixed chamber 59. A drainage pipe 60 is also provided in the fixed chamber 59, and a discharge channel 61 is formed in the middle of the drainage pipe 60. The lower end of the partition 55 is provided with an opening 62 connected to the discharge channel 61.

[0062] Of course, if there is a dead angle at the position of the partition 55, which is not easy to be scraped by the scraping element 5, a pipe for injecting sewage can be added here to generate a vortex in the water storage area 6, keeping the impurities floating, making it easier for the rotating scraping element 5 to scrape and collect them.

[0063] The collection assembly 3 is provided with a collection box 63, a collection member 64, and a baffle 54. The collection box 63 is mounted in the fixed chamber 59. The collection member 64 is disposed in the collection box 63 and connected to the drive shaft 16 through the isolation ring 7. The baffle 54 is disposed in the collection box 63 and is located at the upper end of the collection member 64. A first bevel gear 65 is provided on the drive shaft 16, and a second bevel gear 66 is provided on the collection member 64 to cooperate with the first bevel gear 65.

[0064] A discharge port 67 is provided at one end of the collecting box 63 away from the isolation ring 7 . The collecting member 64 is composed of a rotating shaft 68 and a spiral member 69 . The rotating shaft 68 drives the spiral member 69 to rotate, pushing the impurities in the collecting box 63 to the discharge port 67 for discharge.

[0065] The baffle 54 is located in the middle of the collecting box 63 , and a reinforcing plate 57 is provided at one end of the baffle 54 close to the isolation ring 7 .

[0066] like Figure 18 As shown, side plates 70 may be provided on both sides of the scraping plate 24 , and the side plates 70 may prevent impurities from falling off the scraping plate 24 .

[0067] like Figure 19 As shown, the height of the guide inclined surface 58 is at the upper end of the guide inclined plate 56 , so that the inclined plate 56 can guide the collecting end 25 .

[0068] like Figure 20 As shown, the drive shaft 16 drives the scraper 5 to rotate and approach the collection box 63, so that the guide inclined plate 56 guides the scraper 5 and makes it rise in conjunction with the guide arc plate 9, thereby keeping the scraper 5 close to the baffle 54 and being blocked by the baffle 54, so that the scraper 5 flips around the rotating member 30, thereby pouring the impurities in the collection chamber 26 into the collection box 63.

[0069] During operation, the driving member 8 drives the driving shaft 16 to rotate, and the driving shaft 16 drives the scraping mechanism 2 to rotate on the isolation ring 7, and lifts the scraping mechanism 2 through the guide arc plate 9. Since the scraping mechanism 2 is provided at two places and is connected to the driving shaft 16 with different mounting members 18, when one of the scraping mechanisms 2 reaches the guide arc plate 9, the mounting member 18 in the scraping mechanism 2 that reaches the guide arc plate 9 can move upward on the driving shaft 16 and rotate with the driving shaft 16. After rotating, the scraper 5 is guided by the guide ramp 56 and then blocked by the baffle 54. The collecting end 25 in contact with the baffle 54 is arranged downward, so that the guide slope 58 on the collecting end 25 can cooperate with the guide ramp 56. At the same time, because one end of the scraper 5 is blocked while the drive shaft 16 continues to rotate, the scraper 5 is driven by the connecting rod 14 to continue rotating around the drive shaft 16. The lower end of the scraper 5 is blocked, causing the scraper 5 to rotate and flip around the rotating member 30, keeping the scraper 5 rotated 90° around the limit assembly 17, and then making the scraper 5 vertical. Impurities in the collection chamber 26 at the upper end fall into the collection box 63 under the action of gravity and are discharged through the collecting member 64. The scraper 5 is then driven by the drive shaft 16, so that the lower end of the scraper 5 continues to be blocked by the baffle 54, and the scraper 5 continues to rotate, thereby causing the scraper 5 to rotate 180°, achieving the flip of the scraper 5.

[0070] The collection chamber 26 that has just collected impurities will enter below the water surface, and when the drive shaft 16 drives the scraper 5 to rotate, the sewage will enter the collection chamber 26 below the water surface along the drainage slit 27, flushing the impurities in the drainage slit 27 and the collection chamber 26, making it easier to collect impurities next time. Only one drive member 8 is required to collect and transport impurities, and the scraper 5 can also flush them by its own structure, preventing impurities from sticking to the collection chamber 26 during long-term use and affecting the collection effect.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A domestic sewage collection and purification system, characterized in that: include: A water tank, wherein a water storage area is formed in the middle of the water tank, an isolation ring is provided in the middle of the water storage area, a guide arc plate is provided on the isolation ring, an installation chamber is formed in the middle of the isolation ring, a driving member is provided in the installation chamber, and a driving shaft is provided on the driving member; A scraping mechanism for scraping impurities from the surface of a water tank, the scraping mechanism being connected to a drive shaft and provided with a scraping member, a limiting assembly, a connecting rod, and a mounting member. The mounting member is connected to the drive shaft, the limiting assembly is connected to the mounting member via a connecting rod, and the scraping member is connected to the limiting assembly. When the scraping member rotates, the limiting assembly limits the rotation angle, keeping it in an inclined state in the water storage area to scrape impurities from the surface; and a collecting assembly arranged on a water tank, wherein symmetrically arranged partitions are provided in the middle of the water tank, one of the partitions is provided with a guide inclined plate, a fixed chamber is formed between the partitions, the collecting assembly is arranged in the fixed chamber, a drain pipe is further provided in the fixed chamber, a discharge channel is formed in the middle of the drain pipe, an opening communicating with the discharge channel is provided at the lower end of the partition, the collecting assembly is provided with a collecting box, a collecting member and a baffle, the collecting box is installed in the fixed chamber, the collecting member is provided in the collecting box and is connected to the drive shaft through an isolation ring, the baffle is provided in the collecting box and is at the upper end of the collecting member, a first bevel gear is provided on the drive shaft, and a second bevel gear cooperating with the first bevel gear is provided on the collecting member; The driving member drives the driving shaft to rotate, and the driving shaft drives the scraping mechanism to rotate on the isolation ring, and lifts the scraping mechanism through the guide arc plate, and the scraping member is blocked by the baffle, so that the scraping member is kept rotating 180 degrees around the limit assembly; The scraping member is composed of a scraping plate and a collection end arranged in rotational symmetry. The interior of the collection end forms a collection chamber. The cross section of the collection end is triangular. The collection end is also provided with a drainage slit, which is connected to the collection chamber. The limiting assembly is provided with a limiting seat, a rotating member, a rotating member, an adjusting member and an elastic member. The limiting seat is connected to the connecting rod, the rotating member is hinged on the limiting seat, the elastic member is sleeved on the adjusting member and is at the upper end of the rotating member, the adjusting member passes through the rotating member and is connected to the limiting seat, the rotating member is located between the rotating member and the limiting seat, one end of the rotating member is connected to the connecting rod, and the other end is connected to the scraping member.

2. The domestic sewage collection and purification system according to claim 1, characterized in that: The driving shaft is provided with a connecting block, the connecting block is provided with a limiting portion, and the mounting piece is provided with an arc-shaped opening matched with the driving shaft, a first connecting groove matched with the connecting block, and a limiting hole matched with the limiting portion.

3. The domestic sewage collection and purification system according to claim 1, characterized in that: The guide arc plate is provided with a first guide arc surface, a first arc-shaped surface and a second guide arc surface, and the isolation ring is provided with a second arc-shaped surface. The first arc surface is connected to the second arc surface through the first guide arc surface and the second guide arc surface, and the first arc surface and the second arc surface remain in a horizontal state.

4. The domestic sewage collection and purification system according to claim 1, characterized in that: The scraping plate is arranged in an inclined manner, and the inclination angle of the scraping plate is 4°.

5. The domestic sewage collection and purification system according to claim 1, characterized in that: The limit seat is provided with a threaded hole, a rotating mouth, a limit mouth and a hinge port. The hinge port and the limit mouth are connected by a second connecting groove. A symmetrically arranged oblique surface is provided in the rotating mouth. The rotating part is located in the rotating mouth. The limit seat is also provided with an avoidance surface.

6. The domestic sewage collection and purification system according to claim 5, characterized in that: The rotating member consists of a pressure section, a vertical section, a transverse section, a connecting section and a hinged portion, the transverse section is located in the limiting opening, the connecting section is located in the second connecting groove, the hinged portion is located in the hinged port, and a through hole is provided on the pressure section.

7. The domestic sewage collection and purification system according to claim 6, characterized in that: The rotating member is composed of a rotating rod and a rotating body. The rotating rod connects the connecting rod with the scraping member. The rotating body is located in the rotating port and is pressurized by the pressure section. The rotating body is provided with symmetrically arranged arc surfaces and horizontal surfaces.

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