A domestic sewage treatment system

Abstract

The present application relates to a domestic sewage treatment system, including a filtration treatment device, a regulating tank, a coagulation reaction tank, a primary sedimentation tank, anoxic tank, aerobic tank and a secondary sedimentation tank connected in sequence; the filtration treatment device includes a top plate, a bottom plate, a first drive assembly, an inlet pipe, an outlet pipe, a plurality of upper cylinders and a plurality of lower cylinders, the upper port of each upper cylinder is fixedly connected to the lower surface of the top plate, each upper cylinder is concentrically arranged at intervals, the lower port of each lower cylinder is fixedly connected to the upper surface of the bottom plate, each lower cylinder is concentrically arranged at intervals, and the upper cylinder and the lower cylinder are radially staggered; the inner circumference of the upper cylinder and the lower cylinder are provided with spiral convex strips, the inlet pipe is used to inject domestic sewage into the inner cavity of the lower cylinder located in the center, and the outlet pipe is used to discharge the domestic sewage in the inner cavity of the lower cylinder located at the periphery into the regulating tank; the first drive assembly drives the bottom plate and the top plate to rotate eccentrically. The present application can effectively classify and collect suspended matter to improve the treatment effect of domestic sewage.

Description

Technical Field

[0001] The present application relates to the technical field of domestic sewage treatment, and in particular to a domestic sewage treatment system. Background Art

[0002] The existing domestic sewage treatment system includes a filtration device, a regulating tank, a coagulation reaction tank, a primary sedimentation tank, anoxic tank, aerobic tank, and a secondary sedimentation tank. The domestic sewage is first passed through the filter screen of the sewage pipe to filter out the suspended matter therein, and then transported to the regulating tank by a lifting pump station, and then passes through the above-mentioned treatment tanks in sequence for regulation, coagulation reaction, primary sedimentation, microbial reaction, and re-sedimentation to achieve sewage treatment.

[0003] However, there are many types of suspended solids in domestic sewage, and different suspended solids require different treatment methods. Therefore, if a filter grating is used for unified filtration, the filtration effect of the filter grating is poor, and all types of suspended solids cannot be taken into account when the suspended solids are treated uniformly, resulting in poor treatment effects of the suspended solids, which in turn affects the treatment effect of domestic sewage. Summary of the invention

[0004] In order to effectively classify and collect suspended matter to improve the treatment effect of domestic sewage, the present application provides a domestic sewage treatment system.

[0005] The present application provides a domestic sewage treatment system, which adopts the following technical solution:

[0006] A domestic sewage treatment system, comprising a filtration treatment device, a regulating tank, a coagulation reaction tank, a primary sedimentation tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank connected in sequence; the filtration treatment device comprises a top plate, a bottom plate, a first drive assembly, an inlet pipe, an outlet pipe, a plurality of upper cylinders and a plurality of lower cylinders, the upper port of each upper cylinder is fixedly connected to the lower surface of the top plate, each upper cylinder is concentrically arranged at intervals, the lower port of each lower cylinder is fixedly connected to the upper surface of the bottom plate, each lower cylinder is concentrically arranged at intervals, and the upper cylinder and the lower cylinder are radially staggered, and an annular flow path cavity is formed between the upper cylinder and the lower cylinder; the lower port of the upper cylinder is connected to the lower surface of the bottom plate through a first support rod The bottom plate is connected, and the upper port of the lower cylinder is connected to the top plate through a second support rod, and the first support rod and the second support rod are both provided with a plurality of and are evenly arranged around the circumference; the bottom of the bottom plate is provided with a slag discharge port corresponding to each flow path cavity and a first sealing plug for sealing the slag discharge port; the inner circumferences of the upper cylinder and the lower cylinder are provided with spiral convex strips, the water inlet pipe is used to inject domestic sewage into the inner cavity of the lower cylinder located in the center, and the water outlet pipe is used to discharge the domestic sewage in the inner cavity of the lower cylinder located on the periphery into the regulating tank; the first driving assembly drives the bottom plate and the top plate to rotate eccentrically.

[0007] By adopting the above technical solution, when in use, domestic sewage enters the lower cylinder located in the center from the water inlet pipe, and then the first drive component is started, driving the bottom plate, the top plate, the upper cylinder and the lower cylinder to an eccentric state. At this time, the water in the lower cylinder is in a vortex shape under centrifugal motion, and the large-mass suspended matter in the domestic sewage is thrown onto the inner wall of the lower cylinder. At the same time, domestic sewage is continuously injected into the water inlet pipe, and the domestic sewage that is thrown away from the large-mass suspended matter will overflow into the next flow path cavity. The diameter of the flow path cavity is smaller than that of the upper and lower cylinders, so the centrifugal force is greater, and the larger-mass suspended matter in the flow path cavity can be thrown onto the inner wall of the upper cylinder, and the same is true for the following, so as to realize the graded collection of suspended matter of different masses by flow path cavities of different diameters.

[0008] The finally separated domestic sewage is pumped out through the outlet pipe and enters the regulating tank.

[0009] When the suspended matter needs to be treated separately, clean water is injected into the corresponding flow path cavity to flush away the suspended matter on the inner wall of the flow path cavity, and then the first sealing plug of the corresponding flow path cavity is opened, so that the suspended matter of the same mass is discharged into the treatment pool through the slag discharge port, and then the different flow path cavities are flushed separately to realize the separate collection and treatment of different suspended matter.

[0010] The spiral convex strips are arranged to intercept suspended matter, so as to reduce the situation where the suspended matter on the inner wall of the flow path cavity flows into the next flow path cavity along with the flow of domestic sewage.

[0011] Optionally, both the upper tube and the lower tube are conical, the inner diameter of the upper tube gradually increases from top to bottom, and the inner diameter of the lower tube gradually decreases from top to bottom.

[0012] By adopting the above technical solution, domestic sewage will exert pressure on the inner wall of the flow path cavity under the action of centrifugal force. Since both the upper cylinder and the lower cylinder are conical, the component of the water pressure will force the domestic sewage to move vertically upward or downward, that is, to accelerate the flow efficiency of domestic sewage in the flow path cavity, thereby improving the treatment efficiency of domestic sewage and reducing the power consumption of the delivery pump.

[0013] Optionally, a filter screen is provided on the inner circumference of the spiral ridge, the middle portion of the filter screen is arched toward the axis of the lower cylinder, and the aperture of the filter screen of each spiral ridge decreases as the diameter of the spiral ridge increases.

[0014] By adopting the above technical solution, when domestic sewage is subjected to the action of centrifugal force and vertical force, the sewage will be accelerated and pressurized through the filter net, and the filter net can effectively capture suspended matter, thereby improving the collection effect of suspended matter of different volumes.

[0015] Optionally, a flushing pipe is also included, the top plate is provided with a perforation and a second sealing plug for blocking the perforation, the perforation is used for the flushing pipe to pass through between the upper tube and the lower tube, and the flushing pipe is provided with a plurality of vertically arranged water spray holes.

[0016] By adopting the above technical solution, after the sewage is discharged from the filtering treatment device, the second sealing plug is removed, the flushing pipe is extended into the flow path cavity through the perforation, and then clean water is injected. The clean water in the flushing pipe is sprayed from the water spray hole onto the inner wall of the upper cylinder or the lower cylinder to flush down the attached suspended matter.

[0017] Each flow path cavity is flushed in sequence, and then the corresponding first sealing plug is opened to discharge the clean water mixed with suspended matter for separate collection and treatment.

[0018] Optionally, the spiral ridge is made of rubber material, and elastic folding portions are integrally formed at the upper and lower edges of the outer circumferential surface of the spiral ridge, and the free side of the elastic folding portion is attached to the inner circumferential wall of the lower tube or the upper tube, and a suction cup is provided on the free side of the elastic folding portion, and the suction cup is used for adsorption and connection with the inner circumferential wall of the lower tube or the upper tube, and a movable gap is provided between the outer circumferential surface of the spiral ridge and the inner circumferential wall of the lower tube or the upper tube.

[0019] By adopting the above technical solution, on the one hand, by providing a suction cup, the firmness between the spiral rib and the inner wall of the upper tube or the lower tube can be improved to reduce the occurrence of the spiral rib detachment due to excessive eccentric movement.

[0020] Secondly, by setting the elastic folding part and the movable gap, the distance between the spiral convex strip and the inner wall of the cylinder is elastically adjustable. During the overall eccentric movement, the centrifugal force exerted on different rotating parts of the same spiral convex strip is greater, and the deformation of the elastic folding part is greater. Therefore, the same spiral convex strip can realize reciprocating change of the movable gap during the eccentric movement, that is, the spiral convex strip performs radial reciprocating movement, thereby increasing the disturbance range between the spiral convex strip and the sewage, so as to improve the capture ability of suspended matter and improve the treatment effect.

[0021] Optionally, the upper surface of the bottom plate is provided with a first socket for the first support rod to be inserted downward, and the lower surface of the top plate is provided with a second socket for the second support rod to be inserted upward; the filtering treatment device also includes the lifting mechanism, which is used to drive the top plate and the upper cylinder to move up and down.

[0022] By adopting the above technical solution, by setting the cooperation of the support rod and the socket, not only the relative fixation of the top plate and the bottom plate is achieved to facilitate the transmission of the eccentric torque, but also the top plate and the bottom plate can be detached under the lifting of the lifting mechanism, thereby facilitating the operator to enter the interior of the filtering treatment device for flushing with clean water, so as to collect the attached suspended matter separately.

[0023] Optionally, the spiral ridge is made of rubber material and is embedded with a spiral spring sheet, which forces the spiral ridge to deform radially outward. Elastic folding portions are integrally formed at the upper and lower edges of the outer peripheral surface of the spiral ridge, and the free side of the elastic folding portion is attached to the inner peripheral wall of the lower tube or the upper tube.

[0024] By adopting the above technical solution, under the elastic force of the spiral spring sheet, the elastic folded part is compressed, and the pressure of the elastic folded part on the inner wall of the upper tube or the lower tube is increased, so as to improve the firmness of the spiral convex strip and the inner wall of the tube.

[0025] In addition, the contact force between the elastic folded portion and the inner wall of the cylinder is relatively large, so when the operator removes the spiral convex strip from the inner wall of the cylinder, the spiral convex strip and the elastic folded portion will scrape on the inner wall of the cylinder to scrape off the suspended matter thereon, thereby facilitating the collection of the suspended matter.

[0026] Optionally, the first support rod and the second support rod are both fixed with a vertically arranged connecting rod, and a plurality of elastic telescopic rods extending radially outward are fixed on the connecting rod, and the elastic telescopic rods are vertically spaced and arranged, and the elastic telescopic rods are fixedly connected with adjacent spiral convex strips through penetration, and the lifting mechanism is also used to drive the top plate to rotate around the axis of the upper cylinder.

[0027] By adopting the above technical solution, when it is necessary to collect suspended matter, the top plate is first moved up a certain distance by the lifting mechanism, so that the support rod and the plug sleeve are disconnected, and the top plate is in a rotatable state. At this time, the elastic telescopic rod is extended a short distance, so that the elastic folding part still keeps in contact with the inner wall of the cylinder. Then the lifting mechanism drives the upper cylinder to rotate, so that the inner wall of the cylinder and the spiral convex strip rotate relatively circumferentially, and the spiral convex strip and the elastic folding part will scrape off the suspended matter on the inner wall of the cylinder, thereby facilitating the collection of the suspended matter.

[0028] Furthermore, after the lifting mechanism lifts the top plate again, the degree of separation between the spiral convex strips and the inner wall of the cylinder can be increased, thereby facilitating the flushing of the spiral convex strips to further collect the suspended matter thereon.

[0029] Optionally, the lifting mechanism includes an externally fixed gantry, a winch, a sliding sleeve, a sliding rod, a traction rope and a second drive assembly, the gantry is located directly above the top plate, the sliding sleeve is vertically arranged and fixed on the gantry, the sliding sleeve is coaxially arranged with the upper cylinder, the sliding rod is connected with the sliding sleeve, the winch drives the sliding rod to move up and down through the traction rope, the lower end of the sliding rod is provided with a hydraulic clamp, a vertical plate is fixed at the center of the top plate, the hydraulic clamp is used to clamp the vertical plate, and the second drive assembly is used to drive the top plate to rotate around the axis of the sliding sleeve.

[0030] By adopting the above technical solution, a fixed connection between the slide bar and the top plate can be achieved through the clamping between the hydraulic clamp and the vertical plate, and then the traction rope is wound up through the winch to achieve the lifting of the top plate.

[0031] Optionally, the first support rod and the second support rod are both tube bodies, the free ends of the first support rod and the second support rod are set as water inlet interfaces, the elastic telescopic rod is provided with a first water transfer cavity connected to the inner cavity of the first support rod or the second support rod, the spiral convex strip is provided with a second water transfer cavity, and the second water transfer cavity is connected to the first water transfer cavity; the outer circumferential surface of the spiral convex strip is provided with a plurality of first injection holes, the inner circumferential surface of the spiral convex strip is provided with a plurality of second injection holes, the upper side surface and the lower side surface of the spiral convex strip are both provided with a plurality of third injection holes, the first injection hole, the second injection hole and the third injection hole are all connected to the second water transfer cavity, the third injection hole is arranged toward the adjacent side surface of the spiral convex strip, the first injection hole of the spiral convex strip connected to the first support rod is arranged vertically downward, and the first injection hole of the spiral convex strip connected to the second support rod is arranged vertically upward.

[0032] By adopting the above technical solution, after the lifting mechanism lifts up the top plate, the external water pipe is connected to the water inlet interface of the first support rod or the second support rod, and then the clean water will pass through the first water delivery cavity and the second water delivery cavity in sequence, and be sprayed out from the first spray hole, the second spray hole and the third spray hole, so as to respectively wash the suspended matter on the filter screen, the inner wall of the cylinder and the spiral convex strips, thereby facilitating the collection of the suspended matter.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. By setting flow path cavities of different diameters and the centrifugal force generated by eccentric motion, the centrifugal forces of different flow path cavities are different, and the quality of suspended matter that can be collected is also different, so that the flow path cavities of different diameters can collect suspended matter of different qualities in a graded manner, thereby improving the treatment effect of domestic sewage;

[0035] 2. By setting the elastic folding part and the movable gap, the distance between the spiral convex strip and the inner wall of the cylinder is elastically adjustable, so that the same spiral convex strip can move radially back and forth in the eccentric motion, thereby increasing the disturbance range between the spiral convex strip and the sewage, thereby improving the ability to capture suspended matter and improving the treatment effect;

[0036] 3. By setting a lifting mechanism to lift the ceiling plate and rotate the top plate, the inner wall of the cylinder and the spiral ribs can rotate relative to each other in the circumferential direction. The spiral ribs and the elastic folding parts can scrape off the suspended matter on the inner wall of the cylinder, thereby facilitating the collection of the suspended matter. The lifting mechanism can increase the degree of separation between the spiral ribs and the inner wall of the cylinder, thereby facilitating the flushing of the spiral ribs to further collect the suspended matter thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a processing flow chart of the domestic sewage treatment system of Example 1.

[0038] Figure 2 This is a cross-sectional view of the filtration treatment device of Example 1.

[0039] Figure 3 It is a cross-sectional view of the spiral ridge of Example 1.

[0040] Figure 4 It is a schematic diagram of the filtering treatment device of Example 2 in a top plate lifted state.

[0041] Figure 5 It is a partial cross-sectional view of the elastic telescopic rod of Example 2.

[0042] Figure 6 It is a cross-sectional view of the spiral ridge of Example 2.

[0043] Figure 7 yes Figure 4 A partial enlarged view of point A in the middle.

[0044] Figure 8 It is a partial cross-sectional view of the second support rod, the connecting rod and the elastic telescopic rod of Example 3.

[0045] Fig. 9 It is a cross-sectional view of the spiral rib of Example 3.

[0046] Description of reference numerals: 1. top plate; 2. bottom plate; 3. first drive assembly; 4. water inlet pipe; 5. water outlet pipe; 6. spiral rib; 7. lifting mechanism; 10. flow path cavity; 11. upper cylinder; 12. first support rod; 13. first plug sleeve; 14. flushing pipe; 15. perforation; 16. second sealing plug; 21. lower cylinder; 22. rotating shaft; 23. second support rod; 231. water inlet interface; 24. second plug sleeve; 25. first sealing plug; 26. slag discharge port; 27. connecting rod; 28. elastic telescopic rod; 281. large tube; 2 82. small rod; 283. spring; 284. convex ring; 285. first water delivery chamber; 61. filter screen; 62. elastic folding part; 63. suction cup; 64. spiral spring piece; 65. second water delivery chamber; 66. first spray hole; 67. second spray hole; 68. third spray hole; 71. gantry; 72. winch; 73. sliding sleeve; 74. sliding rod; 741. gear slot; 742. hydraulic clamp; 743. vertical plate; 75. traction rope; 76. second drive assembly; 761. second hydraulic motor; 762. first gear. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-9 This application is described in further detail.

[0048] Example 1 of the present application discloses a domestic sewage treatment system.

[0049] Reference Figure 1 The domestic sewage treatment system includes a filtration treatment device, a regulating tank, a coagulation reaction tank, a primary sedimentation tank, anoxic tank, aerobic tank and a secondary sedimentation tank which are connected in sequence.

[0050] When in use, the domestic sewage is first passed through a filtering treatment device to collect suspended matter in batches, and then the filtered domestic sewage is transported to a regulating tank, and then passes through the above-mentioned treatment tanks in sequence for regulation, coagulation reaction, primary sedimentation, microbial reaction, and re-sedimentation to achieve sewage treatment.

[0051] like Figure 2 As shown, the filtering treatment device includes a top plate 1, a bottom plate 2, a first driving assembly 3, an inlet pipe 4, an outlet pipe 5, a plurality of upper cylinders 11 and a plurality of lower cylinders 21. The top plate 1 is located directly above the bottom plate 2. A vertically arranged rotating shaft 22 is eccentrically fixed to the bottom of the bottom plate 2. The first driving assembly 3 includes a first hydraulic motor. The first hydraulic motor drives the transmission shaft to rotate through gear transmission, thereby driving the bottom plate 2 to rotate eccentrically.

[0052] The lower port of each lower tube 21 is fixedly connected to the upper surface of the bottom plate 2. Each lower tube 21 is arranged concentrically with the axis of the bottom plate 2. The lower tube 21 is conical, and the inner diameter of the lower tube 21 gradually decreases from top to bottom. A plurality of vertically arranged second support rods 23 are fixed to the upper port of the lower tube 21. Each second support rod 23 is evenly arranged around the circumference. A second socket 24 is fixed to the bottom of the top plate 1. The second support rod 23 is plugged into the second socket 24, so that there is a gap between the upper port of the lower tube 21 and the top plate 1.

[0053] The upper port of each upper cylinder 11 is fixedly connected to the lower surface of the top plate 1 , and each upper cylinder 11 is arranged concentrically with the axis of the top plate 1 , and the upper cylinder 11 and the lower cylinder 21 are radially staggered to form an annular flow path between the upper cylinder 11 and the lower cylinder 21 .

[0054] The upper cylinder 11 is conical, and the inner diameter of the upper cylinder 11 gradually increases from top to bottom. A plurality of vertically arranged first support rods 12 are fixed to the lower port of the upper cylinder 11, and the first support rods 12 are evenly arranged around the circumference. A first socket 13 is fixed to the top of the bottom plate 2, and the first support rod 12 is plugged into the first socket 13, so that there is a gap between the lower port of the lower cylinder 21 and the bottom plate 2.

[0055] Through the cooperation between the first support rod 12 and the first socket 13, and the cooperation between the second support rod 23 and the second socket 24, the torque of the first hydraulic motor can be transmitted to the bottom plate 2 and the top plate 1, so that the upper cylinder 11 and the lower cylinder 21 rotate eccentrically together.

[0056] The inner circumferences of the upper cylinder 11 and the lower cylinder 21 are both provided with spiral ridges 6, specifically, as shown in FIG. Figure 3 As shown, the spiral rib 6 is made of rubber, and a filter screen 61 is provided on the inner circumference of the spiral rib 6. The middle part of the filter screen 61 is arched toward the axis of the lower cylinder 21, and the aperture of the filter screen 61 of each spiral rib 6 decreases as the diameter of the upper spiral rib 6 increases, that is, the larger the diameter of the upper cylinder 11 or the lower cylinder 21, the smaller the aperture of the filter screen 61.

[0057] Elastic folding parts 62 are integrally formed at the upper and lower edges of the outer circumference of the spiral ridge 6, and the free side of the elastic folding part 62 is in contact with the inner circumference of the lower tube 21 or the upper tube 11. A movable gap is provided between the outer circumference of the spiral ridge 6 and the inner circumference of the lower tube 21 or the upper tube 11.

[0058] In addition, a suction cup 63 is provided on the free side of the elastic folding portion 62, and the suction cup 63 is used to be adsorbed and connected to the inner circumferential wall of the lower tube 21 or the upper tube 11 (the inner circumferential wall of the upper tube 11 and the inner circumferential wall of the lower tube 21 are collectively referred to as the tube inner wall below), so as to improve the firmness between the spiral ridge 6 and the inner wall of the upper tube 11 or the lower tube 21, so as to reduce the occurrence of the spiral ridge 6 being detached due to excessive eccentric movement.

[0059] The water inlet pipe 4 vertically passes through the top plate 1. The penetration position of the water inlet pipe 4 is the axis of eccentric rotation of the top plate 1. The water inlet pipe 4 extends into the inner cavity of the lower cylinder 21 located in the center to inject domestic sewage, and the water outlet pipe 5 extends into the domestic sewage in the inner cavity of the lower cylinder 21 located on the periphery, so as to extract the domestic sewage from the filtering treatment device and transport it to the regulating tank. For this purpose, a delivery pump can also be added to the water outlet pipe 5.

[0060] During use, domestic sewage enters the lower cylinder 21 located in the center from the water inlet pipe 4, and then the first driving assembly 3 is started, driving the bottom plate 2, the top plate 1, the upper cylinder 11 and the lower cylinder 21 to an eccentric state. At this time, the water in the lower cylinder 21 is in a vortex shape under centrifugal motion, and the large mass of suspended matter in the domestic sewage is thrown to the inner wall of the lower cylinder 21 and the filter screen 61 of the spiral convex strip 6. At the same time, domestic sewage is continuously injected into the water inlet pipe 4, and the domestic sewage with the large mass of suspended matter thrown away will overflow into the next flow path cavity 10. The diameter of the flow path cavity 10 is smaller than that of the upper and lower cylinders 21, so the centrifugal force is greater, and the large mass of suspended matter in the flow path cavity 10 can be thrown to the inner wall of the upper cylinder 11. With the continuous injection of sewage and the continuous eccentric rotation, the sewage flows through each flow path cavity 10 in turn, and leaves the corresponding mass of suspended matter on the inner wall of the cylinder and the filter screen 61. Finally, the separated domestic sewage is pumped out by the outlet pipe 5 to enter the regulating tank.

[0061] That is, by setting flow path cavities 10 of different diameters and adding the centrifugal force generated by eccentric motion, the centrifugal forces of different flow path cavities 10 are different, and the quality of suspended matter that can be collected is also different, thereby achieving graded collection of suspended matter of different qualities by flow path cavities 10 of different diameters.

[0062] In addition, under the action of centrifugal force, domestic sewage will exert pressure on the inner wall of the flow path cavity 10. Since the upper cylinder 11 and the lower cylinder 21 are both conical, the component of the water pressure will force the domestic sewage to move vertically upward or downward, that is, to accelerate the flow efficiency of domestic sewage in the flow path cavity 10, thereby improving the treatment efficiency of domestic sewage and reducing the power consumption of the delivery pump.

[0063] Furthermore, in order to separately collect the suspended matter on the inner wall of the cylinder and the spiral ridges 6, the following arrangement is made: the filtration treatment device further comprises a flushing pipe 14, on which a plurality of vertically arranged water spray holes (not shown in the figure) are provided; a perforation 15 and a second sealing plug 16 for sealing the perforation 15 are provided on the top plate 1; the perforations 15 are arranged one-to-one with the flow path cavities 10.

[0064] The bottom of the bottom plate 2 is provided with a slag discharge port 26 corresponding to each flow path cavity 10 and a first sealing plug 25 for sealing the slag discharge port 26 .

[0065] When eccentric rotation is performed to separate suspended matter, the second sealing plug 16 blocks the perforation 15. When the suspended matter needs to be treated separately, the second sealing plug 16 is removed, the flushing pipe 14 is extended into the flow path cavity 10 through the perforation 15, and then clean water is injected. The clean water of the flushing pipe 14 is sprayed from the water spray hole to the inner wall of the cylinder and the spiral convex strip 6 to wash off the attached suspended matter, and then the corresponding first sealing plug 25 is opened, so that the clean water mixed with the same mass of suspended matter is discharged into the treatment pool through the slag discharge port 26.

[0066] Each flow path cavity 10 is flushed in sequence, that is, different flow path cavities 10 are flushed respectively, and corresponding masses of suspended matter are discharged respectively, so as to realize the separate collection and treatment of different suspended matter.

[0067] Example 2

[0068] The difference between Example 2 and Example 1 is that the flushing is not performed by flushing the flushing pipe 14, but by lifting and external flushing, specifically, Figure 4 , Figure 5 As shown, the first support rod 12 and the second support rod 23 are both fixed with a vertically arranged connecting rod 27, and a plurality of elastic telescopic rods 28 extending radially outward are fixed on the connecting rod 27. The elastic telescopic rods 28 include a small rod 282, a large tube 281 and a spring 283. One end of the small rod 282 is fixedly connected to the connecting rod 27, and the other end of the small rod 282 is slidably inserted into the large tube 281. At the same time, a convex ring 284 is fixed on the small rod 282, and the spring 283 is sleeved on the small rod 282. The two ends of the spring 283 respectively abut against the opposite surfaces of the convex ring 284 and the large tube 281 to force the large tube 281 to move in a direction away from the connecting rod 27. The end of the large tube 281 away from the small rod 282 is fixedly connected with the spiral convex strip 6.

[0069] like Figure 6 As shown, the elastic folding portion 62 does not have a suction cup 63, and a spiral spring piece 64 is embedded in the spiral convex strip 6. The spiral spring piece 64 forces the spiral convex strip 6 to deform radially outward so that the elastic folding portion 62 fits the inner wall of the cylinder more closely.

[0070] like Figure 4 , Figure 7 As shown, the filtering treatment device also includes a lifting mechanism 7, which includes an externally fixed gantry 71, a winch 72, a sliding sleeve 73, a sliding rod 74, a traction rope 75 and a second driving assembly 76. The gantry 71 is located directly above the top plate 1, the sliding sleeve 73 is vertically arranged and fixed on the gantry 71, the sliding sleeve 73 is coaxially arranged with the upper cylinder 11, the sliding rod 74 is penetrated and connected with the sliding sleeve 73, the winch 72 drives the sliding rod 74 to move up and down through the traction rope 75, the lower end of the sliding rod 74 is provided with a hydraulic clamp 742, and a vertical plate 743 is fixed at the center of the top plate 1.

[0071] The second driving assembly 76 is used to drive the top plate 1 to rotate around the axis of the sliding sleeve 73. The second driving assembly 76 includes a second hydraulic motor 761. The second hydraulic motor 761 is installed on the gantry 71. The output shaft of the second hydraulic motor 761 is fixed with a first gear 762. The outer peripheral surface of the sliding rod 74 is provided with a gear groove 741. The first gear 762 and the gear groove 741 cooperate with each other, so that the second hydraulic motor 761 can drive the sliding rod 74 to rotate, and when the winch 72 drives the sliding rod 74 to slide up and down, the first gear 762 and the gear groove 741 can always cooperate.

[0072] When it is necessary to collect suspended matter, the hydraulic clamp 742 is first used to clamp the vertical plate 743, and then the winch 72 is started. The sliding rod 74 and the top plate 1 are pulled a short distance by the traction rope 75, so that the first support rod 12 and the first socket 13, the second support rod 23 and the second socket 24 are disconnected, so that the top plate 1 is in a rotatable state. At this time, the elastic telescopic rod 28 is extended a short distance, so that the elastic folding portion 62 still maintains a state of being in contact with the inner wall of the cylinder. Then the second hydraulic motor 761 is started, and the sliding rod 74 rotates to drive the top plate 1 and the upper cylinder 11 to rotate around their own axis, so that the inner wall of the cylinder and the spiral ridge 6 rotate relative to each other, and the spiral ridge 6 and the elastic folding portion 62 will scrape off the suspended matter on the inner wall of the cylinder.

[0073] Then, the lifting mechanism 7 lifts the top plate 1 again for a long distance to increase the degree of separation between the spiral ribs 6 and the inner wall of the cylinder, and then uses an external water pipe to extend into the corresponding flow path cavity 10 to separately flush and collect the suspended matter on the spiral ribs 6 and the inner wall of the cylinder, so that the collection effect and collection efficiency are higher.

[0074] Example 3

[0075] Embodiment 3 makes the following settings based on Embodiment 2: Figure 8 As shown, the first support rod 12, the second support rod 23 and the connecting rod 27 are all tubes, and the free ends of the first support rod 12 and the second support rod 23 are set as water inlet interfaces 231, which are used to connect external water pipes. The elastic telescopic rod 28 is provided with a first water delivery cavity 285 connected to the inner cavity of the first support rod 12 or the second support rod 23.

[0076] like Fig. 9As shown, a second water delivery cavity 65 is provided in the spiral convex strip 6, and the second water delivery cavity 65 is communicated with the first water delivery cavity 285. A plurality of first injection holes 66 are provided on the outer circumference of the spiral convex strip 6, and a plurality of second injection holes 67 are provided on the inner circumference of the spiral convex strip 6. A plurality of third injection holes 68 are provided on the upper side and the lower side of the spiral convex strip 6. The first injection hole 66, the second injection hole 67 and the third injection hole 68 are all communicated with the second water delivery cavity 65, and the third injection hole 68 is arranged toward the adjacent side of the spiral convex strip 6. The first injection hole 66 of the spiral convex strip 6 connected to the first support rod 12 is arranged vertically downward, and the first injection hole 66 of the spiral convex strip 6 connected to the second support rod 23 is arranged vertically upward.

[0077] When the lifting mechanism 7 lifts up the top plate 1 and the upper cylinder 11, and the spiral ribs 6 have rotated to scrape off the suspended matter on the inner wall of the cylinder, the external water pipe is connected to the water inlet interface 231 of the first support rod 12 or the second support rod 23, and then the clean water passes through the first water delivery cavity 285 and the second water delivery cavity 65 in sequence, and the clean water is sprayed out from the first spray hole 66, the second spray hole 67 and the third spray hole 68, so as to respectively wash the suspended matter on the inner wall of the cylinder, the filter screen 61 and the spiral ribs 6, so that the washing effect is better and the collection of suspended matter is further facilitated.

[0078] The second spray holes 67 of the spiral ridges 6 on the first support rod 12 and the second support rod 23 have different directions, mainly to be able to spray onto the adjacent inner walls of the cylinder to achieve a better flushing effect.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A domestic sewage treatment system, Features: The invention comprises a filtering treatment device, a regulating tank, a coagulation reaction tank, a primary sedimentation tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank which are connected in sequence; the filtering treatment device comprises a top plate (1), a bottom plate (2), a first driving assembly (3), an inlet pipe (4), an outlet pipe (5), a plurality of upper cylinders (11) and a plurality of lower cylinders (21); the upper port of each upper cylinder (11) is fixedly connected to the lower surface of the top plate (1); the upper cylinders (11) are arranged concentrically and spaced apart; the lower port of each lower cylinder (21) is fixedly connected to the upper surface of the bottom plate (2); the lower cylinders (21) are arranged concentrically and spaced apart; the upper cylinders (11) and the lower cylinders (21) are arranged radially and staggered; an annular flow path cavity (10) is formed between the upper cylinders (11) and the lower cylinders (21); the lower port of the upper cylinder (11) is connected to the bottom plate (2) via a first support rod (12); The upper end of the lower cylinder (21) is connected to the top plate (1) via a second support rod (23); the first support rod (12) and the second support rod (23) are both provided in plurality and are evenly arranged around the circumference; the bottom of the bottom plate (2) is provided with a slag discharge port (26) corresponding to each flow path cavity (10) and a first sealing plug (25) for sealing the slag discharge port (26); the inner circumferences of the upper cylinder (11) and the lower cylinder (21) are both provided with spiral convex strips (6); the water inlet pipe (4) is used to inject domestic sewage into the inner cavity of the lower cylinder (21) located at the center; the water outlet pipe (5) is used to discharge the domestic sewage from the inner cavity of the lower cylinder (21) located at the periphery into the regulating tank; the first driving assembly (3) drives the bottom plate (2) and the top plate (1) to rotate eccentrically.

2. The domestic sewage treatment system according to claim 1, Features: The upper cylinder (11) and the lower cylinder (21) are both conical, the inner diameter of the upper cylinder (11) gradually increases from top to bottom, and the inner diameter of the lower cylinder (21) gradually decreases from top to bottom.

3. The domestic sewage treatment system according to claim 2, Features: A filter screen (61) is provided on the inner circumferential surface of the spiral convex strip (6), the middle portion of the filter screen (61) arches towards the axis of the lower cylinder (21), and the aperture of the filter screen (61) of each spiral convex strip (6) decreases as the diameter of the spiral convex strip (6) increases.

4. The domestic sewage treatment system according to claim 3, Features: It also comprises a flushing pipe (14), the top plate (1) being provided with a through hole (15) and a second sealing plug (16) for blocking the through hole (15), the through hole (15) being used for allowing the flushing pipe (14) to penetrate between the upper cylinder (11) and the lower cylinder (21), and the flushing pipe (14) being provided with a plurality of vertically arranged water spray holes.

5. The domestic sewage treatment system according to claim 3, Features: The spiral convex strip (6) is made of rubber material. The upper and lower edges of the outer peripheral surface of the spiral convex strip (6) are integrally formed with elastic folding portions (62). The free side of the elastic folding portion (62) is in contact with the inner peripheral wall of the lower tube (21) or the upper tube (11). A suction cup (63) is provided on the free side of the elastic folding portion (62). The suction cup (63) is used to be adsorbed and connected with the inner peripheral wall of the lower tube (21) or the upper tube (11). A movable gap is provided between the outer peripheral surface of the spiral convex strip (6) and the inner peripheral wall of the lower tube (21) or the upper tube (11).

6. The domestic sewage treatment system according to claim 3, Features: The upper surface of the bottom plate (2) is provided with a first socket (13) for the first support rod (12) to be inserted downwards, and the lower surface of the top plate (1) is provided with a second socket (24) for the second support rod (23) to be inserted upwards; the filtering treatment device further comprises a lifting mechanism (7), the lifting mechanism (7) being used to drive the top plate (1) and the upper cylinder (11) to move up and down.

7. The domestic sewage treatment system according to claim 6, Features: The spiral convex strip (6) is made of rubber material, and a spiral spring sheet (64) is embedded in the spiral convex strip (6). The spiral spring sheet (64) forces the spiral convex strip (6) to deform radially outward. The upper and lower edges of the outer peripheral surface of the spiral convex strip (6) are integrally formed with elastic folding portions (62), and the free side of the elastic folding portion (62) is in contact with the inner peripheral wall of the lower tube (21) or the upper tube (11).

8. The domestic sewage treatment system according to claim 7, Features: The first support rod (12) and the second support rod (23) are both fixed with a vertically arranged connecting rod (27), and a plurality of elastic telescopic rods (28) extending radially outward are fixed on the connecting rod (27), and the elastic telescopic rods (28) are arranged vertically at intervals, and the elastic telescopic rods (28) are fixedly connected to the adjacent spiral convex strips (6) through penetration, and the lifting mechanism (7) is also used to drive the top plate (1) to rotate around the axis of the upper cylinder (11).

9. The domestic sewage treatment system according to claim 8, Features: The lifting mechanism (7) comprises an externally fixed gantry (71), a hoist (72), a sliding sleeve (73), a sliding rod (74), a traction rope (75) and a second driving assembly (76); the gantry (71) is located directly above the top plate (1); the sliding sleeve (73) is vertically arranged and fixed on the gantry (71); the sliding sleeve (73) is coaxially arranged with the upper cylinder (11); the sliding rod (74) is connected to the sliding sleeve (73); the hoist (72) drives the sliding rod (74) to move up and down through the traction rope (75); a hydraulic clamp (742) is provided at the lower end of the sliding rod (74); a vertical plate (743) is fixed at the center of the top plate (1); the hydraulic clamp (742) is used to clamp the vertical plate (743); and the second driving assembly (76) is used to drive the top plate (1) to rotate around the axis of the sliding sleeve (73).

10. The domestic sewage treatment system according to claim 8, Features: The first support rod (12) and the second support rod (23) are both tubular bodies; the free ends of the first support rod (12) and the second support rod (23) are provided as water inlet interfaces (231); a first water delivery cavity (285) is provided in the elastic telescopic rod (28) and is connected to the inner cavity of the first support rod (12) or the second support rod (23); a second water delivery cavity (65) is provided in the spiral convex strip (6), and the second water delivery cavity (65) is connected to the first water delivery cavity (285); a plurality of first injection holes (66) are provided on the outer peripheral surface of the spiral convex strip (6); The inner circumferential surface is provided with a plurality of second injection holes (67); the upper side surface and the lower side surface of the spiral convex strip (6) are both provided with a plurality of third injection holes (68); the first injection hole (66), the second injection hole (67) and the third injection hole (68) are all in communication with the second water delivery cavity (65); the third injection hole (68) is arranged toward the adjacent side surface of the spiral convex strip (6); the first injection hole (66) of the spiral convex strip (6) connected to the first support rod (12) is arranged vertically downward; and the first injection hole (66) of the spiral convex strip (6) connected to the second support rod (23) is arranged vertically upward.

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