A sewage treatment system

Abstract

The present application provides a kind of sewage treatment system, it is related to sewage treatment technical field, including filter box, filter plate and sundry cleaning device are arranged in filter box, sewage inlet pipe is communicated with filter box water inlet, filter box water outlet is set below filter plate, the water outlet of filter box and the water inlet of dosing tank are communicated by sewage outlet pipe, the water outlet of dosing tank is communicated with the water inlet of adjustment tank by first water pipe, the water outlet of second water pipe is located above aeration tank, third water pipe is communicated between aeration tank and sedimentation tank, clean water suction pipe is installed above sedimentation tank.The technical problem that the existing sewage treatment system is not separated from large size solid impurities before water quality is clean, easy to cause the influence of sewage treatment efficiency is solved.

Description

TECHNICAL FIELD

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

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and so on, and is also increasingly entering the daily life of ordinary people.

[0003] The existing sewage treatment system, such as the sewage treatment system disclosed in CN115818903A, has the following problems:

[0004] 1. Before the sewage enters the sewage pool, the large-size solid impurities in the sewage are not automatically separated, and the solid impurities will deposit in the sewage pool, affecting the water storage capacity of the sewage pool. Long-term accumulation requires cleaning the water storage pool, affecting the sewage treatment efficiency.

[0005] 2. When sludge backflow occurs, the automatic response measures cannot be started when the sludge backflow pipe is blocked, and manual shutdown of the transmission assembly is required. If the shutdown is not timely, the sludge will flow out. SUMMARY

[0006] The present application provides a sewage treatment system to solve at least one of the technical problems in the background art.

[0007] To solve the above technical problems, the present application discloses a sewage treatment system, which comprises a filter box, a filter plate and a debris removal device arranged in the filter box, a sewage inlet pipe communicating with the water inlet of the filter box, a filter box water outlet arranged below the filter plate, a sewage outlet pipe communicating the water outlet of the filter box and the water inlet of the dosing tank, a first water pipe communicating the water outlet of the dosing tank and the water inlet of the adjusting tank, a second water pipe communicating the water outlet of the adjusting tank, the water outlet of the second water pipe being located above the aeration tank, a third water pipe communicating between the aeration tank and the sedimentation tank, and a clean water suction pipe installed above the sedimentation tank.

[0008] Preferably, the debris removal device comprises a group of electric sliding rails in the left-right direction, a support rod is slidably connected in the electric sliding rail, a debris scraper is fixedly connected to the lower end of the support rod, the debris scraper is in contact with the upper surface of the filter plate, a debris collection box is arranged at the left end of the filter box, a gate is arranged on the left side wall of the filter box, and the gate is located above the filter plate.

[0009] Preferably, the dosing box is provided with a mixing device, the mixing device comprising a first motor, a stirring shaft fixedly connected to an output end of the first motor, the stirring shaft penetrating through an upper wall of the dosing box, a plurality of stirring blades fixedly connected to a lower portion of the stirring shaft, a grinding box fixedly connected to an upper surface of the dosing box, a dosing opening arranged at a top end of the grinding box, a grinding shaft rotatably penetrating through a top surface of the grinding box, the stirring shaft and the grinding shaft being connected through a belt transmission device, a plurality of grinding blocks fixedly connected to a lower portion of the grinding shaft, and a powder outlet pipe fixedly connected to a bottom surface of the grinding box, the powder outlet pipe being provided with a control valve, and the powder outlet pipe being inserted into the dosing box.

[0010] Preferably, the sewage inlet pipe, the sewage outlet pipe, the first water pipe, the second water pipe, the third water pipe and the purified water suction pipe are all provided with control valves and pressure pumps.

[0011] Preferably, an upper surface of the adjusting tank is fixedly connected with a reagent tank, a liquid outlet pipe of the reagent tank is inserted into the adjusting tank, and the reagent tank stores a PH adjusting liquid, the PH adjusting liquid being used to adjust the acidity and alkalinity of the sewage in the adjusting tank.

[0012] Preferably, the aeration tank is provided with an aeration device, the aeration device comprising a support frame fixedly connected to an inner bottom surface of the aeration tank, an aeration frame slidably connected to the support frame, a plurality of aeration pipes arranged on the aeration frame and in communication with each other, and a gas warehouse in communication with the aeration pipes through a gas conveying hose, an elevating device arranged above the aeration tank and connected to the aeration frame, the elevating device being used to control the depth of the aeration frame in the aeration tank.

[0013] Preferably, the sedimentation tank is divided into an upper sedimentation chamber and a lower sludge diversion chamber through a horizontal partition plate, the partition plate is provided with a release pipe, and the sludge diversion chamber is provided with a sludge diversion device.

[0014] Preferably, the sludge diversion device comprises a diversion tank, a reflux chamber and a discharge chamber arranged in the diversion tank, a reflux pipe in communication with the reflux chamber, the other end of the reflux pipe being in communication with the aeration tank and provided with a reflux valve, a discharge pipe in communication with the discharge chamber, the other end of the discharge pipe being in communication with a sludge collecting tank and provided with a discharge valve, guide holes arranged in front and back sidewalls of the diversion tank, guide rods slidably connected to the guide holes, springs sleeved on the guide rods, and upper and lower ends of the springs being fixedly connected to an inner bottom surface of the sludge diversion chamber and a bottom surface of the diversion tank, respectively.

[0015] Preferably, the sludge distribution device further comprises a switching device, the switching device comprises two spring boxes, the two spring boxes are arranged on the left and right sides of the distribution box, the spring boxes are fixedly connected to the inner bottom surface of the sludge distribution cavity, a bearing seat is slidably connected in the spring box, a spring two is fixedly connected between the bottom surface of the bearing seat and the inner bottom surface of the spring box, a limiting cavity is arranged in the left bearing seat, a limiting block is slidably connected in the limiting cavity, a spring three is arranged between the bottom surface of the limiting block and the inner bottom surface of the limiting cavity, a tapered surface is arranged on the upper end of the limiting block, a sliding rod is slidably penetrated on the left side wall of the sludge distribution cavity, a limiting plate is fixedly connected to the right end of the sliding rod, a spring four is sleeved on the sliding rod, the two ends of the spring four are fixedly connected to the left inner wall of the sludge distribution cavity and the left side surface of the limiting plate respectively, a flow guide groove is fixedly connected to the right side surface of the limiting plate, a connecting rope is fixedly connected to the bottom surface of the distribution box, the connecting rope is fixedly connected to the left side surface of the limiting plate after winding around the deflection wheel set, and the deflection wheel set is fixedly connected to the inner wall of the sludge distribution cavity.

[0016] The technical scheme of the present application will be further described in detail below with reference to the drawings and embodiments.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The device blocks the large debris outside the filter box by arranging a filter plate in the filter box before the sewage enters the filter box, so that the sewage in the filter box is free of large debris, preventing the large debris from blocking the pipeline during the subsequent sewage conveying process and affecting the sewage treatment efficiency, and ensuring the smooth operation of the sewage treatment system. The debris removal device is arranged above the filter plate to sweep the blocked debris on the filter plate into the debris collection box at regular intervals, preventing the filter plate from being blocked by too much debris and affecting the water inlet efficiency of the filter box, and ensuring the sewage treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments, and explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0020] Figure 1 is a structural schematic view of the present application;

[0021] Figure 2 is a structural schematic view of the filter box of the present application;

[0022] Figure 3 is a structural schematic view of the dosing tank of the present application;

[0023] Figure 4 is a structural schematic view of the aeration tank of the present application;

[0024] Figure 5 is a structural schematic view of the sedimentation tank of the present application;

[0025] Figure 6 Figure 2 is a left view schematic diagram of the connection between the shunt box and the guide rod.

[0026] Figure: 1, filter box; 2, filter plate; 3, sewage inlet pipe; 4, dosing tank; 5, sewage outlet pipe; 6, adjusting tank; 7, first water pipe; 8, second water pipe; 9, aeration tank; 10, third water pipe; 11, clean water suction pipe; 12, electric sliding rail; 13, support rod; 14, debris scraping plate; 15, debris collection tank; 16, gate; 17, first motor; 18, stirring shaft; 19, stirring blade; 20, grinding box; 21, dosing port; 22, grinding shaft; 23, belt drive; 24, grinding block; 25, powder outlet pipe; 26, control valve; 27, reagent tank; 28, support frame; 29, aeration frame; 30, aeration pipe; 31, air chamber; 32, lifting device; 321, fixing seat; 322, winding wheel; 323, connecting rope; 33, partition plate; 34, sedimentation cavity; 35, sludge shunt cavity; 36, release pipe; 37, shunt box; 38, backflow cavity; 39, discharge cavity; 40, backflow pipe; 41, backflow valve; 42, discharge pipe; 43, sludge collection tank; 44, discharge valve; 45, guide hole; 46, guide rod; 47, spring one; 48, spring box; 49, bearing seat; 50, spring two; 51, limiting cavity; 52, limiting block; 53, spring three; 54, conical surface; 55, sliding rod; 56, limiting plate; 57, spring four; 58, flow guide groove; 59, connecting rope; 60, direction changing wheel set; 61, sedimentation tank; 62, air delivery hose. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described herein below with reference to the drawings; it should be understood, however, that the described preferred embodiments are intended to be illustrative only and the present application is not limited to the described preferred embodiments.

[0028] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description and do not mean to particularly indicate the order or sequence, nor to limit the present application, which are merely for distinguishing the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art, when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0029] The present application provides the following embodiments

[0030] Embodiment 1

[0031] The sewage treatment system provided by the embodiment of the present application comprises a filter box 1, a filter plate 2 and a debris removal device arranged in the filter box 1, a sewage inlet pipe 3 connected with an inlet of the filter box 1, an outlet of the filter box 1 arranged below the filter plate 2, a sewage outlet pipe 5 connected between the outlet of the filter box 1 and an inlet of a dosing tank 4, a first water pipe 7 connected between an outlet of the dosing tank 4 and an inlet of an adjusting tank 6, a second water pipe 8 connected with an outlet of the adjusting tank 6, an outlet of the second water pipe 8 arranged above an aeration tank 9, a third water pipe 10 connected between the aeration tank 9 and a sedimentation tank 61, and a clean water pumping pipe 11 arranged above the sedimentation tank 61. Figures 1-6 As shown in the figure, the sewage treatment system comprises a filter box 1, a filter plate 2 and a debris removal device arranged in the filter box 1, a sewage inlet pipe 3 connected with an inlet of the filter box 1, an outlet of the filter box 1 arranged below the filter plate 2, a sewage outlet pipe 5 connected between the outlet of the filter box 1 and an inlet of a dosing tank 4, an outlet of the dosing tank 4 and an inlet of an adjusting tank 6 through a first water pipe 7, an outlet of the adjusting tank 6 connected with a second water pipe 8, an outlet of the second water pipe 8 arranged above an aeration tank 9, a third water pipe 10 connected between the aeration tank 9 and a sedimentation tank 61, and a clean water pumping pipe 11 arranged above the sedimentation tank 61.

[0032] Preferably, the debris removal device comprises a set of electric sliding rails 12 arranged in the left-right direction, a support rod 13 slidably connected in the electric sliding rails 12, a debris scraper 14 fixedly connected to a lower end of the support rod 13, the debris scraper 14 in contact with an upper surface of the filter plate 2, a debris collection tank 15 arranged at a left end of the filter box 1, a gate 16 arranged on a left side wall of the filter box 1, and the gate 16 arranged above the filter plate 2.

[0033] The electric sliding rail is a prior art, the support rod 13 of the present application is arranged at a moving end of the electric sliding rail, and the specific structure can refer to the electric sliding rail and the seat for a vehicle with the electric sliding rail disclosed in CN 113226840 A.

[0034] Preferably, a medicine mixing device is arranged on the dosing tank 4, the medicine mixing device comprises a first motor 17, a stirring shaft 18 fixedly connected to an output end of the first motor 17, the stirring shaft 18 penetrating through an upper surface of the dosing tank 4, a plurality of stirring blades 19 fixedly connected to a lower part of the stirring shaft 18, a grinding tank 20 fixedly connected to the upper surface of the dosing tank 4, a dosing opening 21 arranged at a top end of the grinding tank 20, a grinding shaft 22 rotatably penetrating through a top surface of the grinding tank 20, the stirring shaft 18 and the grinding shaft 22 connected through a belt transmission device 23, a grinding block 24 fixedly connected to a lower part of the grinding shaft 22, a powder outlet pipe 25 fixedly connected to a bottom surface of the grinding tank 20, a control valve 26 arranged on the powder outlet pipe 25, and the powder outlet pipe 25 inserted into the dosing tank 4.

[0035] Preferably, the sewage inlet pipe 3, the sewage outlet pipe 5, the first water pipe 7, the second water pipe 8, the third water pipe 10 and the clean water pumping pipe 11 are all provided with the control valve 26 and a pressure pump.

[0036] Preferably, a reagent tank 27 is fixedly connected to an upper surface of the adjusting tank 6, a liquid outlet pipe of the reagent tank 27 inserted into the adjusting tank 6, a PH adjusting liquid stored in the reagent tank 27, and the PH adjusting liquid used for adjusting the acidity and alkalinity of the sewage in the adjusting tank 6.

[0037] Preferably, the sedimentation tank 61 is divided into an upper sedimentation chamber 34 and a lower sludge diversion chamber 35 by a transverse partition 33, the partition 33 is provided with a discharge pipe 42, and the sludge diversion chamber 35 is provided with a sludge diversion device.

[0038] The above technical solution has the following beneficial effects:

[0039] When sewage treatment is performed, sewage is poured into the filter box 1 from the sewage inlet pipe 3, and large impurities in the sewage are blocked above the filter plate 2. By setting the gate 16, the gate 16 is closed during water filling to prevent a large amount of sewage from flowing into the impurity collection box 15. When a certain amount of impurities is accumulated above the filter plate 2, the gate 16 is opened, and the electric sliding rail 12 drives the support rod 13 to slide in the electric sliding rail 12, thereby driving the impurity scraper 14 to sweep the impurities on the filter plate 2 into the impurity collection box 15. The filtered sewage flows into the dosing box 4 through the sewage outlet pipe 5, the cleaning agent is poured into the grinding box 20 from the dosing port 21, the first motor 17 is started to drive the stirring shaft 18 to rotate, the stirring shaft 18 drives the grinding shaft 22 to rotate through the belt transmission device 23, and the cleaning agent in blocks is ground into fine powder. Then, the powder outlet pipe 25 at the bottom of the grinding box 20 is opened to add the ground powder into the dosing box 4, the stirring blade 19 is driven to stir in the dosing box 4 by the stirring shaft 18, the powder and the sewage are uniformly mixed, the dissolved impurities in the sewage are removed, the dosed sewage flows into the adjustment box 6 through the first water pipe 7, the PH regulator is added dropwise into the sewage through the adjustment box 6, the pH of the sewage is adjusted to a suitable range, and then the sewage flows into the aeration tank 9 through the second water pipe 8. The organic matter in the sewage is decomposed by the biological sludge in the aeration tank 9, the treated sewage flows into the sedimentation tank 61 through the third water pipe 10, the upper clear standard water is pumped through the clean water pump 11 after the sewage is settled, and the lower settled sludge is returned to the aeration tank 9 through the sludge diversion device or is sent to a sludge processing plant after treatment.

[0040] The device blocks large impurities outside the filter box 1 before the sewage enters the filter box 1, ensures that there is no large impurities in the sewage in the filter box 1, prevents the large impurities from blocking the pipeline in the subsequent sewage conveying process and affecting the sewage treatment efficiency, ensures the smooth operation of the sewage treatment system, sets the impurity removing device above the filter plate 2, sweeps the impurities blocked on the filter plate 2 into the impurity collecting box 15 at regular time, prevents the impurities from blocking the filter plate 2 and affecting the water inlet efficiency of the filter box 1, ensures the sewage treatment efficiency, sets the grinding box 20 to grind the medicament into medicament powder, and stirs the medicament powder through the stirring shaft 18, ensures the uniform mixing of the medicament powder and the sewage, improves the sewage treatment effect, adjusts the PH value before aeration, ensures the stability of the biological sludge system in the aeration tank 9, and ensures the sewage treatment effect.

[0041] The present sewage treatment system solves the problems of the prior sewage treatment system disclosed in the background art, such as the sewage treatment system disclosed in CN115818903A, including the following problems: 1. The large-size solid impurities in the sewage are not automatically separated before the sewage enters the sewage tank, the solid impurities are deposited in the sewage tank, the water storage capacity of the sewage tank is affected, the sewage tank needs to be cleaned after long-term accumulation, and the sewage treatment efficiency is affected.

[0042] Example 2

[0043] Based on example 1, as shown in Figure 4 The aeration tank 9 is provided with an aeration device, the aeration device includes a support frame 28 fixedly connected to the inner bottom surface of the aeration tank 9, the support frame 28 is slidably connected with an aeration frame 29, the aeration frame 29 is provided with a plurality of aeration pipes 30, the plurality of aeration pipes 30 are communicated with each other, the aeration pipes 30 are communicated with an external air chamber 31 through a gas conveying hose 62, the aeration tank 9 is provided with a lifting device 32 above, the lifting device 32 is connected with the aeration frame 29, and the lifting device 32 is used for controlling the depth of the aeration frame 29 into the aeration tank 9.

[0044] The lifting device 32 is provided with two groups and is symmetrically arranged on the left and right, the two groups of lifting devices 32 are respectively connected with the left and right ends of the aeration frame 29, the lifting device 32 includes a fixed seat 321 fixedly connected to the top end of the side wall of the aeration tank 9, one end of the fixed seat 321 close to the aeration frame 29 is provided with a winding wheel 322, the fixed seat 321 is provided with a driving device, the driving device is used for driving the winding wheel 322 to rotate, the winding wheel 322 is wound with a connecting rope 323, and the other end of the connecting rope 323 is fixedly connected with the aeration frame 29.

[0045] The above technical scheme has the beneficial effects that:

[0046] By sliding the aeration frame 29 onto the support frame 28 and installing the aeration pipe 30 on the aeration frame 29, the aeration height can be easily controlled, ensuring sufficient oxygen content in all parts of the aeration tank 9 and guaranteeing the aeration effect. At the same time, when the aeration device needs maintenance, the aeration frame 29 can be raised to its maximum height, thereby raising the aeration device to the water surface without the need for water discharge or sludge removal, reducing maintenance difficulty, shortening maintenance time, reducing the workload of staff, improving maintenance efficiency, and improving wastewater treatment efficiency.

[0047] Example 3

[0048] Based on Example 1 or 2, such as Figures 5-6 As shown, the sludge diversion device includes a diversion box 37, which contains a return chamber 38 and a discharge chamber 39. The return chamber 38 is connected to a return pipe 40, and the other end of the return pipe 40 is connected to an aeration tank 9. A return valve 41 is installed on the return pipe 40. The discharge chamber 39 is connected to a discharge pipe 42, and the other end of the discharge pipe 42 is connected to a sludge collection box 43. A discharge valve is installed on the discharge pipe 42. Guide holes 45 are provided in the front and rear side walls of the diversion box 37. A guide rod 46 is slidably connected in the guide hole 45. A spring 47 is fitted on the guide rod 46. The upper and lower ends of the spring 47 are fixedly connected to the bottom surface of the sludge diversion chamber 35 and the bottom surface of the diversion box 37, respectively.

[0049] Preferably, the sludge diversion device further includes a switching device, which includes two spring boxes 48. The two spring boxes 48 are disposed on the left and right sides of the diversion box 37. The spring boxes 48 are fixedly connected to the bottom surface of the sludge diversion cavity 35. A bearing seat 49 is slidably connected inside the spring box 48. A second spring 50 is fixedly connected between the bottom surface of the bearing seat 49 and the bottom surface of the spring box 48. A limiting cavity 51 is provided inside the left bearing seat 49. A limiting block 52 is slidably connected inside the limiting cavity 51. A third spring 53 is provided between the bottom surface of the limiting block 52 and the bottom surface of the limiting cavity 51. The upper end of the limiting block 52... A tapered surface 54 is provided. A sliding rod 55 slides through the left side wall of the sludge diversion chamber 35. A limit plate 56 is fixedly connected to the right end of the sliding rod 55. A spring 57 is fitted on the sliding rod 55. The two ends of the spring 57 are fixedly connected to the left inner wall of the sludge diversion chamber 35 and the left side of the limit plate 56, respectively. A guide groove 58 is fixedly connected to the right side of the limit plate 56. A connecting rope 59 is fixedly connected to the bottom surface of the diversion box 37. The connecting rope 59 passes around the reversing wheel assembly 60 and is fixedly connected to the left side of the limit plate 56. The reversing wheel assembly 60 is fixedly connected to the inner wall of the sludge diversion chamber 35.

[0050] The beneficial effects of the above technical solution are as follows:

[0051] 1. (1) In the initial state, the return valve 41 is open, the discharge valve 44 is open, the limit plate 56 is located to the left of the limit block 52, and the diversion box 37 is not in contact with the bearing seat 49.

[0052] (2) With the opening of the release pipe 36, the release pipe 36 will discharge the sludge water with sludge remaining in the sedimentation chamber 34 after removing the supernatant into the sludge distribution chamber 35. In the initial state, the sludge water will fall into the reflux chamber 38, and the sludge water in the reflux chamber 38 will flow back into the aeration tank 9 along the reflux pipe 40. When the reflux amount of the sewage approaches the predetermined total amount, the reflux valve 41 is closed.

[0053] (2) The sludge water falling into the reflux chamber 38 will be stored in the reflux chamber 38. With the increase of the sludge water in the reflux chamber 38, the distribution box 37 will move downward under the action of gravity, compressing the spring 1 47. After the lower surface of the distribution box 37 contacts the bearing seat 49, the bearing seat 49 will move downward under the compression of the spring 2 50, and the limiting block 52 will move downward with the bearing seat 49. When the highest point of the limiting block 52 is lower than the lowest point of the limiting plate 56, the limiting plate 56 will move rightward under the action of the spring 4 57 (in the intermediate state, the spring 4 57 is in the compressed state), until the limiting plate 56 contacts the release pipe 36. At this time, the sludge water discharged from the release pipe 36 will flow into the discharge chamber 39 along the flow guide groove 58. Finally, the sludge water in the discharge chamber 39 will flow into the sludge collection box 43 along the discharge pipe 42 for storage. After that, the sludge water in the sludge collection box 43 will be sent to a treatment plant for treatment. Figure 5

[0054] (3) After the sludge water in the sedimentation chamber 34 is discharged, the reflux valve 41 is opened to discharge the remaining sludge water in the reflux chamber 38 into the aeration tank 9. The distribution box 37 with reduced weight is lifted up under the action of the spring 1 47. Due to the pulling of the connecting rope 59, the limiting plate 56 is pulled to the left. During the movement of the limiting plate 56 to the left, the limiting plate 56 contacts the conical surface 54 and presses the limiting block 52 downward, so that the limiting plate 56 passes through the area of the limiting block 52. When the limiting plate 56 moves to the left side of the limiting block 52, the limiting block 52 is lifted up to the initial position under the action of the spring 3 53, losing the downward pressure.

[0055] ​2. When the backflow pipe 40 is blocked, the sludge in the backflow chamber 38 cannot flow smoothly into the aeration tank 9 along the backflow pipe 40, and part of the sludge in the backflow chamber 38 will be deposited, and the switching device will be triggered as the sludge increases. At this time, the sludge flowing out of the release pipe 36 will flow into the discharge chamber 39 along the guide groove 58, preventing the operator from not being able to close the release pipe 36 in time, causing sludge to continuously flow into the backflow chamber 38, causing sludge to overflow from the backflow chamber 38, causing pollution to the working environment. When the backflow pipe 40 is blocked, the switching device is automatically triggered to guide the sludge discharged from the release pipe 36 into the discharge chamber 39 after a certain amount of sludge accumulates in the backflow chamber 38, preventing the overflow of sludge and ensuring the cleanliness of the working environment. When the sludge in the backflow chamber 38 is discharged, the switching device automatically rebounds, allowing the release pipe 36 to continue to inject sludge into the backflow chamber, without the need for intervention by the operator, maintaining a certain limit of sludge backflow while giving the operator enough time to troubleshoot.

[0056] 3. By blocking the movement of the limiting plate 56 with the limiting block 52, it is ensured that the limiting plate 56 is only released when the weight of the sludge in the backflow chamber 38 is sufficient to move the limiting plate 56 into contact with the release pipe 36, preventing the limiting plate 56 from being in an intermediate position due to insufficient weight of the sludge in the backflow chamber 38, causing sludge to splash out of the distribution box 37, affecting the cleanliness of the working environment. When the limiting effect of the limiting block 52 on the limiting plate 56 disappears, the limiting plate 56 quickly reaches the designated position, reducing the splashing of sludge. After the limiting block is released, it can quickly switch between backflow and discharge, facilitating control of the total flow of sludge backflow, maintaining the stability of the aeration tank 9. The release pipe 36 limits the maximum travel of the limiting plate 56, preventing the limiting plate 56 from moving too far and causing sludge to not fall into the guide groove 58, causing sludge to flow out of the distribution box 37 and affecting the cleanliness of the working environment. By connecting the distribution box 37 and the limiting plate 56 with the connecting rope 59, the limiting plate 56 can be automatically pulled back to the initial position when there is little sludge left in the backflow chamber 38, saving the process of manual resetting and preventing the occurrence of missed operations during manual operation. The part of the sludge stored in the backflow chamber 38 can be used by the operator to check the condition of the sludge, thereby more accurately adjusting the amount of sludge backflow, without the need for the operator to take samples from the sedimentation tank 61, ensuring the safety of the operator, and improving the efficiency of sewage treatment.

[0057] The present application solves the problem of not being able to automatically activate countermeasures when the sludge backflow pipe is blocked during sludge backflow, as proposed in the background art, and the need for manual shutdown of the transmission assembly, which can cause sludge to flow out if not done in time.

[0058] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A sewage treatment system characterised in that: The utility model relates to a sewage treatment device, including filter box (1), be provided with filter plate (2) and sundry cleaning device in filter box (1), sewage inlet pipe (3) is connected with filter box (1) water inlet, and the water outlet of filter box (1) is located filter plate (2) below, and the water outlet of filter box (1) and the water inlet of dosing tank (4) are communicated through sewage outlet pipe (5), and the water outlet of dosing tank (4) is communicated with the water inlet of adjusting tank (6) through first water pipe (7), and the water outlet of adjusting tank (6) is communicated with second water pipe (8), and the water outlet of second water pipe (8) is located above aeration tank (9), and the third water pipe (10) is communicated between aeration tank (9) and sedimentation tank (61), and the clean water pump (11) is installed above sedimentation tank (61); Sedimentation tank (61) is divided into upper sedimentation chamber (34) and lower sludge diversion chamber (35) through horizontal partition (33), and release pipe (36) is arranged on partition (33), and sludge diversion device is arranged in sludge diversion chamber (35); The sludge diversion device comprises a diversion box (37), a reflux chamber (38) and a discharge chamber (39) are arranged in the diversion box (37), the reflux chamber (38) is communicated with a reflux pipe (40), the other end of the reflux pipe (40) is communicated with the aeration tank (9), a reflux valve (41) is arranged on the reflux pipe (40), the discharge chamber (39) is communicated with a discharge pipe (42), the other end of the discharge pipe (42) is communicated with a sludge collection box (43), a discharge valve (44) is arranged on the discharge pipe (42), guide holes (45) are arranged in the front and rear side walls of the diversion box (37), guide rods (46) are slidably connected in the guide holes (45) along the up-down direction, springs (47) are sleeved on the guide rods (46), and the upper and lower ends of the springs (47) are fixedly connected with the bottom surface in the sludge diversion chamber (35) and the bottom surface of the diversion box (37) respectively; The sludge shunting device further comprises a switching device, the switching device comprises two spring boxes (48), the two spring boxes (48) are arranged on the left and right sides of the shunting box (37), the spring boxes (48) are fixedly connected to the inner bottom surface of the sludge shunting cavity (35), a bearing seat (49) is slidably connected in the spring box (48), a spring (50) is fixedly connected between the bottom surface of the bearing seat (49) and the inner bottom surface of the spring box (48), a limiting cavity (51) is arranged in the left bearing seat (49), a limiting block (52) is slidably connected in the limiting cavity (51) along the up-down direction, a spring (53) is arranged between the bottom surface of the limiting block (52) and the inner bottom surface of the limiting cavity (51), a conical surface (54) is arranged on the upper end of the limiting block (52), a sliding rod (55) is slidably penetrated on the left side wall of the sludge shunting cavity (35), a limiting plate (56) is fixedly connected to the right end of the sliding rod (55), a spring (57) is sleeved on the sliding rod (55), the two ends of the spring (57) are fixedly connected to the left inner wall of the sludge shunting cavity (35) and the left side surface of the limiting plate (56) respectively, a flow guide groove (58) is fixedly connected to the right side surface of the limiting plate (56), a connecting rope (59) is fixedly connected to the bottom surface of the shunting box (37), the connecting rope (59) is fixedly connected to the left side surface of the limiting plate (56) after passing through the turning wheel set (60), and the turning wheel set (60) is fixedly connected to the inner wall of the sludge shunting cavity (35).

2. A sewage treatment system as claimed in claim 1, characterised in that: The debris removing device comprises a set of electric sliding rails (12) in the left-right direction, a support rod (13) is slidably connected in the electric sliding rail (12), a debris scraper (14) is fixedly connected to the lower end of the support rod (13), the debris scraper (14) is in contact with the upper surface of the filter plate (2), a debris collection box (15) is arranged at the left end of the filter box (1), a gate (16) is arranged on the left side wall of the filter box (1), and the gate (16) is located above the filter plate (2).

3. The sewage treatment system of claim 1, wherein: A medicine mixing device is installed on the dosing tank (4), the medicine mixing device comprises a first motor (17), the output end of the first motor (17) is fixedly connected with a stirring shaft (18), the stirring shaft (18) penetrates through the upper wall of the dosing tank (4), a plurality of stirring blades (19) are fixedly connected to the lower part of the stirring shaft (18), a grinding box (20) is fixedly connected to the upper surface of the dosing tank (4), a dosing opening (21) is arranged at the top end of the grinding box (20), a grinding shaft (22) is rotatably penetrated through the top surface of the grinding box (20), the stirring shaft (18) and the grinding shaft (22) are connected through a belt transmission device (23), a grinding block (24) is fixedly connected to the lower part of the grinding shaft (22), a powder outlet pipe (25) is fixedly connected to the bottom surface of the grinding box (20), a control valve (26) is arranged on the powder outlet pipe (25), and the powder outlet pipe (25) is inserted into the dosing tank (4).

4. The sewage treatment system of claim 1, wherein: The control valve (26) and the pressure pump are arranged on the sewage inlet pipe (3), the sewage outlet pipe (5), the first water pipe (7), the second water pipe (8), the third water pipe (10) and the clean water suction pipe (11).

5. The sewage treatment system of claim 1, wherein: The upper surface of the adjusting box (6) is fixedly connected with a reagent box (27), a liquid outlet pipe of the reagent box (27) is inserted into the adjusting box (6), and the reagent box (27) stores a PH adjusting liquid; the PH adjusting liquid is used for adjusting the acidity and alkalinity of sewage in the adjusting box (6); and the liquid outlet pipe of the reagent box (27) is connected with a control valve.

6. The sewage treatment system of claim 1, wherein: An aeration device is arranged in the aeration tank (9), the aeration device comprises a support frame (28) fixedly connected to the bottom surface in the aeration tank (9), a slidingly connected aeration frame (29) is arranged on the support frame (28), a plurality of aeration pipes (30) are arranged on the aeration frame (29), the plurality of aeration pipes (30) are in communication with each other, the aeration pipes (30) are in communication with a gas chamber (31) through a gas conveying hose, a lifting device (32) is arranged above the aeration tank (9), the lifting device (32) is connected to the aeration frame (29), and the lifting device (32) is used for controlling the depth of the aeration frame (29) in the aeration tank (9).

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