CN111410373A

CN111410373A - Garbage conveying mechanism, sewage treatment system and sewage treatment method

Info

Publication number: CN111410373A
Application number: CN202010301737.2A
Authority: CN
Inventors: 林广华
Original assignee: Zhongshan Xiangshi Machinery Equipment Co Ltd
Current assignee: Zhongshan Xiangshi Machinery Equipment Co Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-07-14

Abstract

The invention discloses a garbage conveying mechanism, a sewage treatment system and a sewage treatment method, wherein the garbage conveying mechanism comprises a first rotating shaft and a second rotating shaft which are arranged in a casing at intervals, the first rotating shaft is arranged below a filtering device, the second rotating shaft is arranged above a garbage collection box, conveying belts are sleeved on the first rotating shaft and the second rotating shaft, drain holes are formed in the conveying belts, baffles are uniformly distributed on the upper end surfaces of the conveying belts at intervals, the first rotating shaft is connected with a first driving mechanism through a transmission mechanism, and an extrusion mechanism capable of extruding and dehydrating garbage on the conveying belts is arranged in the casing. The sewage treatment system is simple in structure, good in filtering effect, capable of squeezing and dehydrating garbage sent out by the filtering device, effectively preventing secondary pollution, and capable of automatically replacing the garbage collecting box, thereby effectively improving the sewage treatment efficiency.

Description

Garbage conveying mechanism, sewage treatment system and sewage treatment method

Technical Field

The invention relates to the field of sewage treatment, in particular to a garbage conveying mechanism for a sewage treatment system, and also relates to a sewage treatment system comprising the garbage conveying mechanism; the invention also relates to a method for treating sewage by adopting the sewage treatment system.

Background

The sewage treatment equipment is an industrial equipment capable of effectively treating domestic sewage, industrial wastewater and the like in urban areas, prevents sewage and pollutants from directly flowing into water areas, and has important significance for improving ecological environment, promoting urban grade and promoting economic development.

In industrial wastewater or domestic sewage, a large amount of solid substances often exist, so that in the sewage treatment process, the solid substances in the sewage need to be filtered firstly so as not to block sewage treatment equipment.

A sewage treatment system adopting MBBR technology, which comprises a regulating tank, a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank which are arranged in sequence, wherein the regulating tank is provided with a sewage inlet, and the regulating tank is internally provided with a sewage inlet

The water outlet end of the water suction pump is connected with a first water delivery pipe, one end of the first water delivery pipe, which is far away from the water suction pump, is arranged in the pre-denitration pool, the pre-denitration pool and the anaerobic pool are directly provided with first water delivery ports, and a second water delivery port is arranged between the anaerobic pool and the anoxic pool; and a sewage inlet and a sewage outlet of the adjusting tank are provided with grids.

Obviously, only adopt simple grid to carry out the filtration of solid waste among the above-mentioned technique, its filter effect is not ideal, often causes the problem that the jam appears in the follow-up processing easily, filters the back rubbish through the grid and can't handle automatically moreover, after gathering to certain degree, can influence filter effect.

In addition, the above treatment system has poor sewage treatment effect due to the design defects.

Therefore, a garbage conveying mechanism capable of automatically collecting filtered garbage is needed, and the existing sewage treatment system is yet to be further improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the garbage conveying mechanism which is simple in structure and can effectively collect and treat the garbage discharged by the filtering device.

The sewage treatment system comprises the garbage conveying mechanism, and is good in filtering effect, capable of squeezing and dewatering garbage sent by the filtering device, effectively preventing secondary pollution, and capable of automatically replacing the garbage collecting box, so that sewage treatment efficiency is effectively improved.

The invention also aims to provide a method for treating sewage by adopting the sewage treatment system, which has simple process and convenient operation.

In order to achieve the above object, the present invention adopts the following scheme: a garbage conveying mechanism comprises a first rotating shaft and a second rotating shaft which are arranged in a casing at intervals, wherein the first rotating shaft is arranged below a filtering device, the second rotating shaft is arranged above a garbage collecting box, conveying belts are sleeved on the first rotating shaft and the second rotating shaft, drain holes are formed in the conveying belts, baffles are evenly distributed on the upper end faces of the conveying belts at intervals, the first rotating shaft is connected with a first driving mechanism through a transmission mechanism, and an extrusion mechanism capable of extruding and dehydrating garbage on the conveying belts is arranged in the casing.

As another improvement of the garbage conveying mechanism, the outlet end of the conveying belt is provided with an ejection mechanism which can eject the garbage in the drainage hole, and the ejection mechanism comprises ejector pin groups which are uniformly distributed on the second rotating shaft along the circumferential direction.

As another improvement of the garbage conveying mechanism, the extrusion mechanism comprises a supporting plate inserted in the conveying belt, one side of the supporting plate is fixedly connected to the inner wall of the shell, an extrusion cylinder is arranged in the shell, and an extrusion plate is arranged on a cylinder shaft of the extrusion cylinder.

As another improvement of the garbage conveying mechanism, a water collecting tank is arranged on the supporting plate, a water collecting pipe is arranged on the machine shell, one end of the water collecting tank is connected with the water collecting pipe, a round drainage pipe is arranged at one end of the water collecting pipe, and the round drainage pipe extends out of the machine shell and is connected with the round water outlet pipe.

As another improvement of the garbage conveying mechanism, a guide seat is arranged in the machine shell, a guide hole is arranged in the guide seat, a guide rod is arranged on the extrusion plate, the guide rod is movably arranged in the guide hole, an accommodating groove is arranged in the extrusion plate, a movable plate is arranged in the accommodating groove, and a buffer spring is arranged between the movable plate and the bottom of the accommodating groove.

In order to achieve the above object, the present invention adopts the following scheme for a sewage treatment system: a sewage treatment system comprises a sewage filtering device, a regulating tank, a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, a pressurizing aeration pump and a sterilizing device, wherein the sewage filtering device comprises a casing, a filtering device is arranged in one side of the casing, a water inlet pipe communicated with the water inlet end of the filtering device is arranged at the upper part of the casing, an automatic garbage collecting box replacing mechanism is arranged at the other side of the casing, the casing between the filtering device and the automatic garbage collecting box replacing mechanism is internally provided with the garbage conveying mechanism according to any one of the claims, the front side of the casing is provided with an outlet through which a garbage collecting box can pass, the outer side of the outlet is provided with an unloading slideway for assisting the garbage collecting box to be conveyed out, the water outlet of the sewage filtering device is connected with the water inlet of the regulating tank through a first water conveying pipe, and the water inlet of, a water suction pump is arranged at the bottom of the adjusting tank, a water delivery pipe of the water suction pump extends into the upper part of the pre-denitrification tank, a connecting pipe is arranged between the pre-denitrification tank and the anaerobic tank, one end of the connecting pipe extends into the bottom of the pre-denitrification tank, the other end of the connecting pipe extends into the bottom of the anaerobic tank, a first sealing cover is arranged at the upper part of the anaerobic tank, an exhaust pipe is arranged on the first sealing cover, the upper part of the anaerobic tank is connected with the anoxic tank through a second water feeding pipe, a first valve is arranged on the second water feeding pipe, the exhaust pipe is connected with an air inlet pipe of a pressurizing aeration pump, an air inlet branch pipe is arranged on the air inlet pipe, a third valve is arranged on the exhaust pipe, a fourth valve is arranged on the air inlet branch pipe, the upper part of the anoxic tank is connected with the aerobic tank through a third water feeding pipe, a stirring shaft, an aerator pipe which can rotate along with the stirring shaft is arranged on the stirring shaft, the aerator pipe is communicated with a gas supply channel, a stirring motor is arranged at the upper part of the aerobic tank, the stirring shaft is connected with the stirring motor, the gas supply channel is connected with a first gas outlet pipe of a booster aeration pump, a fifth valve is arranged on the first gas outlet pipe, the upper part of the aerobic tank is connected with a sedimentation tank through a fourth water supply pipe, a sludge discharge pipe is arranged at the bottom of the sedimentation tank, the sludge discharge pipe is connected with a sludge delivery pump, a second valve is arranged on the sludge discharge pipe, the upper part of the sedimentation tank is connected with a disinfection device through the fifth water supply pipe, a second sealing cover is arranged at the upper part of the disinfection device, a booster pipe, a pressure gauge and an exhaust valve are arranged on the second sealing cover, a plurality of ultraviolet disinfection pipes are arranged in the disinfection device, and the booster pipe is connected with the second, and a sixth valve is arranged on the second air outlet pipe, a seventh valve is arranged on the fifth water feeding pipe, a drainage pipe is arranged at the lower part of the disinfection device, and an eighth valve is arranged on the drainage pipe.

As another improvement of the sewage treatment system, the filtering device comprises a shell, a circular water outlet pipe is arranged in the shell, a water inlet is arranged at the upper side of the circular water outlet pipe, a filtering cylinder is sleeved on the circular water outlet pipe, a plurality of filtering cavities are arranged at intervals in the circumferential direction at the position, corresponding to the water inlet, of the filtering cylinder, a filtering net is arranged at the bottom of each filtering cavity, a slag discharge port is arranged at the position, corresponding to the filtering cavities, of the lower side of the shell, a cleaning mechanism capable of cleaning the filtering net is arranged in the circular water outlet pipe, and a first driving mechanism capable of driving the filtering cylinder to rotate by a fixed angle is arranged outside the shell.

As another improvement of the sewage treatment system, the automatic garbage collection box replacement mechanism comprises a base, and is characterized in that: a movable bearing platform is arranged on the base, an elastic supporting mechanism is arranged between the movable bearing platform and the base, one side of the movable bearing platform is provided with a conveying track which inclines towards the movable bearing platform, an intercepting mechanism is arranged in the conveying track, a toggle mechanism which can drive the interception mechanism to open or close is arranged on the base, a backward driving mechanism which can drive the toggle mechanism to move backward when the movable bearing platform is pressed down is arranged on the base, a reset mechanism which can lead the toggle mechanism to move forwards so as to lead the interception mechanism to open the interception is arranged between the toggle mechanism and the base, a reset device which can reset the interception mechanism is arranged between the interception mechanism and the conveying track, and a push-out mechanism which can push the garbage collection box on the movable bearing platform forward when the shifting mechanism is reset forward and moves is arranged between the shifting mechanisms of the movable bearing platform.

As another improvement of the sewage treatment system, the water inlet end of the fifth water supply pipe is connected with a water pump, and the water pump is arranged at the upper part of the sedimentation tank.

In order to achieve the above object, the present invention adopts the following scheme with respect to a sewage treatment method: a sewage treatment method is characterized by comprising the following steps:

s1, filtering the sewage to be treated by sewage filtering equipment to remove impurities;

s2, feeding the filtered sewage into a regulating tank, and feeding the sewage into a pre-denitrification tank through a water pump for pre-denitrification and dephosphorization treatment;

s3, opening the third valve and the fifth valve, closing the fourth valve and the sixth valve, controlling the pressurizing aeration pump to work, and enabling negative pressure to be formed in the anaerobic tank, so that the sewage treated by the pre-denitrification tank is input into the anaerobic tank through the connecting pipe for treatment, phosphorus in the sewage is released, meanwhile, part of organic matters are aminated, closing the third valve 53 and opening the fourth valve 54;

s4, inputting the sewage treated by the anaerobic tank into an anoxic tank for deamination;

s5, inputting the sewage treated by the anoxic tank into an aerobic tank for nitrification treatment;

s6, inputting the sewage treated by the aerobic tank into a sedimentation tank for sedimentation treatment; and after the sedimentation treatment is finished, pumping the sewage at the upper part of the sedimentation tank into a disinfection device, starting the disinfection device, closing the eighth valve, opening the sixth valve, carrying out ultraviolet disinfection under the pressurized condition, and after the disinfection treatment is finished, opening the eighth valve to discharge the treated sewage.

In summary, compared with the prior art, the invention has the beneficial effects that: the garbage conveying mechanism is simple in structure, can effectively convey garbage discharged by the filtering device to the garbage collecting box, and can extrude and dewater the garbage in the conveying process, so that secondary pollution is effectively prevented; the automatic garbage collection box replacing mechanism in the sewage treatment system can utilize the weight change of garbage in the garbage collection box to realize automatic garbage collection box replacement, and has the advantages of simple structure, convenience in use, effective energy conservation, environmental friendliness and practicability; the filtering device in the sewage treatment system is simple in structure, the filtering cylinder is provided with the plurality of filtering cavities, different filtering cavities can be switched according to the water level change at the water inlet, garbage in the filtering cavities can be output through the slag discharge port, and meshes of the filtering net are cleaned and dredged through the cleaning mechanism, so that the next filtering effect is effectively guaranteed; the sewage treatment method has the advantages of simple process, convenient operation, high filtration efficiency and good filtration effect, effectively removes ammonia and phosphorus in the sewage, and effectively kills bacteria in the sewage.

Drawings

FIG. 1 is a perspective view of a wastewater treatment system according to the present invention.

FIG. 2 is a perspective view of the sewage filtering apparatus of the present invention.

FIG. 3 is a perspective view of the other side of the sewage filtering apparatus according to the present invention.

FIG. 4 is a top view of FIG. 1;

fig. 5 is a schematic cross-sectional view taken along line a-a in fig. 4.

Fig. 6 is a schematic cross-sectional view of B-B in fig. 4.

Fig. 7 is a schematic cross-sectional view of C-C in fig. 4.

Fig. 8 is a schematic view of the automatic garbage collection box replacing mechanism of the present invention.

Fig. 9 is a schematic view of another angle of fig. 8.

Fig. 10 is a perspective view of the toggle mechanism of the present invention.

Fig. 11 is a schematic view of another angle of fig. 10.

FIG. 12 is a schematic view of a filter apparatus and an extrusion mechanism of the present invention.

FIG. 13 is a schematic view of a filter apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, the present invention provides a technical solution: a garbage conveying mechanism 17 comprises a first rotating shaft 171 and a second rotating shaft 172 which are arranged in a machine shell 14 at intervals, wherein the first rotating shaft 171 is arranged below a filtering device 15, the second rotating shaft 172 is arranged above a garbage collection box 16, a conveying belt 173 is sleeved on the first rotating shaft 171 and the second rotating shaft 172, a water discharging hole 174 is arranged on the conveying belt 173, baffles 175 are evenly distributed on the upper end face of the conveying belt 173 at intervals, the first rotating shaft 171 is connected with a first driving mechanism 9 through a transmission mechanism 176, and an extrusion mechanism 18 capable of extruding and dehydrating garbage on the conveying belt 173 is arranged in the machine shell 14.

In the present invention, a certain height difference exists between the first rotating shaft 171 and the second rotating shaft 172, so that an inclined angle is formed between the conveyor belt 173 and the horizontal plane, in this embodiment, the first rotating shaft 171 is at a lower position, and the second rotating shaft 172 is at a higher position, so that the conveyor belt 173 is inclined upwards, in the present invention, a water collecting hopper 19 is arranged on the housing 14 below the filtering device 15, a drain pipe 20 is arranged at the front side of the water collecting hopper 19, the drain pipe 20 is connected with the round water outlet pipe 2, when the conveyor belt 173 rotates towards the garbage collecting box 16, water drops in the garbage flow towards the filtering device 15 under the action of gravity, flow out from the drain hole 174, enter the water collecting hopper 19, and then are collected into the round water outlet pipe 2 through the drain pipe 20 and discharged together.

In the first embodiment of the transmission mechanism 176 of the present invention, a mounting seat 1761 is disposed at the rear end of the housing 14, a rotating shaft 1762 is disposed in the mounting seat 1761, a connecting gear 1763 is disposed at the front end of the rotating shaft 1762, the connecting gear 1763 is engaged with the transmission gear 91, a driving pulley 1764 is disposed at the rear ends of the connecting gear 1763 and the rotating shaft 1762, a transmission pulley 1765 is disposed at the rear end of the first rotating shaft 171, and a transmission belt 1766 is sleeved on the driving pulley 1764 and the transmission pulley 1765. In the present invention, when the stepping motor 92 rotates a fixed angle or number of turns, exactly one filter chamber 5 is replaced and the conveyor belt 173 is moved a fixed distance, and the squeezing mechanism 18 is located exactly between two adjacent baffles 175. In the present embodiment, the fixed distance that the conveyor belt 173 moves when the stepping motor 92 rotates by a predetermined angle or number of rotations may be determined according to a ratio between the number of teeth of the connecting gear 1763 and the number of teeth of the driving gear 91, thereby setting the position of the stopper 175 according to the fixed distance.

In the second embodiment of the transmission mechanism 176 according to the present invention, a mounting seat 1761 is provided at the rear end of the housing 14, a rotating shaft 1762 is provided in the mounting seat 1761, a connecting gear 1763 is provided at the front end of the rotating shaft 1762, the connecting gear 1763 is engaged with the transmission gear 91, a driving sprocket is provided at the rear ends of the connecting gear 1763 and the rotating shaft 1762, a transmission sprocket is provided at the rear end of the first rotating shaft 171, and a transmission chain is sleeved on the driving sprocket and the transmission sprocket.

In the third embodiment of the transmission mechanism 176 according to the present invention, a mounting seat 1761 is disposed at the rear end of the housing 14, a rotating shaft 1762 is disposed in the mounting seat 1761, a connecting gear 1763 is disposed at the front end of the rotating shaft 1762, the connecting gear 1763 is engaged with the driving gear 93, a driving pulley 1764 is disposed at the rear ends of the connecting gear 1763 and the rotating shaft 1762, a transmission pulley 1765 is disposed at the rear end of the first rotating shaft 171, and a transmission belt 1766 is sleeved on the driving pulley 1764 and the transmission pulley 1765. In the present embodiment, the fixed distance that the conveyor belt 173 moves when the stepping motor 92 rotates by a predetermined angle or number of rotations is determined according to the ratio between the number of teeth of the connecting gear 1763 and the number of teeth of the driving gear 93, and the position of the stopper 175 is set according to the fixed distance.

The invention is provided with an ejection mechanism 21 which can eject the garbage in the drain hole 174 at the outlet end of the conveyer belt 173, and the ejection mechanism 21 comprises ejector pin groups 22 which are uniformly distributed on a second rotating shaft 172 along the circumferential direction.

According to the invention, a plurality of drainage hole groups are uniformly distributed at intervals on the conveying belt 173, the drainage hole groups and the second rotating shaft 172 are arranged in a balanced manner, each drainage hole group consists of a plurality of drainage holes 174 which are uniformly arranged at intervals, the thimble groups 22 comprise thimbles which are arranged at intervals along the axial direction of the second rotating shaft 172, the distance between the thimbles is equivalent to the distance between the drainage holes 174, the distance between the thimble groups 22 is equivalent to the distance between the drainage hole groups, when the second rotating shaft 172 rotates, the thimbles just fall into the drainage holes 174, so that garbage falling into the thimble holes in the extrusion process is effectively ejected out, the garbage is smoothly conveyed into the garbage collection box 16, and meanwhile, the conveying belt 173 is effectively and accurately driven. In the present invention, the same ejection mechanism 21 may be provided on the first rotating shaft 171, and the ejection mechanism 21 on the first rotating shaft does not eject the garbage in the water discharge hole 174, but drives the conveying belt 173 to rotate conveniently and accurately.

The extrusion mechanism 18 of the invention comprises a supporting plate 181 inserted in the conveying belt 173, one side of the supporting plate 181 is fixedly connected to the inner wall of the casing 14, an extrusion cylinder 182 is arranged in the casing 14, and an extrusion plate 183 is arranged on a cylinder shaft of the extrusion cylinder 182.

According to the invention, a water collecting tank 1811 is arranged on the supporting plate 181, a water collecting pipe 1812 is arranged on the machine shell 14, one end of the water collecting tank 1811 is connected with the water collecting pipe 1812, one end of the water collecting pipe 1812 is provided with a circular drainage pipe 1813, and the circular drainage pipe 1813 extends out of the machine shell 14 and is connected with the circular water outlet pipe 2.

According to the invention, a guide seat 184 is arranged in the casing 14, a guide hole is arranged in the guide seat 184, a guide rod 185 is arranged on the extrusion plate 183, the guide rod 185 is movably arranged in the guide hole, an accommodating groove 188 is arranged in the extrusion plate 183, a movable plate 186 is arranged in the accommodating groove 188, and a buffer spring 187 is arranged between the movable plate 186 and the bottom of the accommodating groove 188.

In the invention, the extrusion cylinder 182 is connected with the controller, and the controller can accurately control the action time and the telescopic length of the extrusion cylinder 182, thereby effectively extruding and dehydrating the garbage on the conveying belt 173.

Referring to fig. 1-13, the present invention relates to a sewage treatment system, which comprises a sewage filtering apparatus 150, a regulating tank 36, a pre-denitrification tank 37, an anaerobic tank 38, an anoxic tank 39, an aerobic tank 40, a sedimentation tank 41, a pressurizing aeration pump 42 and a sterilizing device 43, wherein the sewage filtering apparatus 150 comprises a housing 14, a filtering device 15 is arranged in one side of the housing 14, a water inlet pipe 160 communicated with a water inlet end of the filtering device 15 is arranged at an upper part of the housing 14, an automatic garbage collection tank replacing mechanism 200 is arranged at the other side of the housing 14, the garbage conveying mechanism 17 according to any one of claims 1 to 5 is arranged in the housing 14 between the filtering device 15 and the automatic garbage collection tank replacing mechanism 200, an outlet 34 through which the garbage collection tank 16 can pass is arranged at a front side of the housing 14, a discharging chute 35 for assisting the garbage collection tank 16 to discharge is arranged at an outer side of the, the water outlet of the sewage filtering device 150 is connected with the water inlet of the regulating reservoir 36 through a first water supply pipe 44, the water inlet of the sewage filtering device 150 is connected with a sewage pipe, the bottom of the regulating reservoir 36 is provided with a water suction pump 45, a water delivery pipe 451 of the water suction pump 45 extends into the upper part of the pre-denitrification reservoir 37, a connecting pipe 46 is arranged between the pre-denitrification reservoir 37 and the anaerobic reservoir 38, one end of the connecting pipe 46 extends into the bottom of the pre-denitrification reservoir 37, the other end of the connecting pipe 46 extends into the bottom of the anaerobic reservoir 38, the upper part of the anaerobic reservoir 38 is provided with a first sealing cover 47, the first sealing cover 47 is provided with an air suction pipe 48, the upper part of the anaerobic reservoir 38 is connected with the anoxic reservoir 39 through a second water supply pipe 49, the second water supply pipe 49 is provided with a first valve 50, the air suction pipe 48 is connected with an air inlet pipe 51 of the pressure-increasing aeration pump, the extraction pipe 48 is provided with a third valve 53, the air inlet branch pipe 52 is provided with a fourth valve 54, the upper part of the anoxic tank 39 is connected with the aerobic tank 40 through a third water feeding pipe 391, the aerobic tank 40 is internally provided with a stirring shaft 55, the stirring shaft 55 is internally provided with an air feeding channel, the stirring shaft 55 is provided with an aeration pipe 56 which can rotate along with the stirring shaft 55, the aeration pipe 56 is communicated with the air feeding channel, the upper part of the aerobic tank 40 is provided with a stirring motor 57, the stirring shaft 55 is connected with the stirring motor 57, the air feeding channel is connected with a first air outlet pipe 58 of a pressurizing aeration pump 42, the first air outlet pipe 58 is provided with a fifth valve 59, the upper part of the aerobic tank 40 is connected with the sedimentation tank 41 through a fourth water feeding pipe 60, the bottom of the sedimentation tank 41 is provided with a sludge discharge pipe 61, and the sludge discharge pipe 61 is connected with a sludge delivery pump, the sludge discharge pipe 61 is provided with a second valve 63, the upper part of the sedimentation tank 41 is connected with the disinfection device 43 through a fifth water supply pipe 64, the upper part of the disinfection device 43 is provided with a second sealing cover 65, the second sealing cover 65 is provided with a pressure increasing pipe 66, a pressure gauge 67 and an exhaust valve 68, the disinfection device 43 is internally provided with a plurality of ultraviolet disinfection pipes 69, the pressure increasing pipe 66 is connected with a second air outlet pipe 70 of the pressure increasing aeration pump 42, the second air outlet pipe 70 is provided with a sixth valve 71, the fifth water supply pipe 64 is provided with a seventh valve 72, the lower part of the disinfection device 43 is provided with a drainage pipe 73, and the drainage pipe 73 is provided with an eighth valve 74.

The water inlet end of the fifth water supply pipe 64 is connected with a water pump 75, and the water pump 75 is arranged at the upper part of the sedimentation tank 41.

The filter device 15 comprises a shell 1, a circular water outlet pipe 2 is arranged in the shell 1, a water inlet 3 is arranged on the upper side of the circular water outlet pipe 2, a filter cylinder 4 is sleeved on the circular water outlet pipe 2, a plurality of filter cavities 5 are arranged at intervals in the circumferential direction at the position, corresponding to the water inlet 3, of the filter cylinder 4, a filter screen 6 is arranged at the bottom of each filter cavity 5, a slag discharge port 7 is arranged at the position, corresponding to the filter cavity 5, of the lower side of the shell 1, a cleaning mechanism 8 capable of cleaning the filter screen 6 is arranged in the circular water outlet pipe 2, and a first driving mechanism 9 capable of driving the filter cylinder 4 to rotate for a fixed angle is arranged outside the shell 1.

When the filtering device is used, sewage enters from the filtering cavity 5 on the upper side of the filtering cylinder 4, enters the water inlet 3 on the upper side of the circular water outlet pipe 2 after passing through the filtering net 6, and is then discharged from the front end of the circular water outlet pipe 2 or flows into the next process, when more garbage is accumulated on the filtering net 6 at the position of the water inlet 3, the first driving mechanism 9 can be controlled to drive the filtering cylinder 4 to rotate for a fixed angle, so that one filtering cavity 5 is switched, the filtering efficiency is effectively improved, when the filtering cavity 5 accumulating more garbage rotates to the slag discharge opening 7, the garbage naturally falls from the slag discharge opening 7 under the action of gravity, and meanwhile, the cleaning mechanism 8 can dredge meshes of the filtering net 6 entering the slag discharge opening 7, so that the filtering net 6 is effectively ensured to be reused. In the invention, the inner wall of the shell 1 and the outer wall of the filtering cylinder 4 are dynamically sealed

The cleaning mechanism 8 comprises a cleaning brush 81, the front end of the cleaning brush 81 extends into the rear side of the round water outlet pipe 2, bristles 82 capable of being inserted into meshes of the filter screen 6 are arranged at the position, corresponding to the filter screen 6, of the front end of the cleaning brush 81, the rear end of the cleaning brush 81 extends out of the round water outlet pipe 2, and a second driving mechanism 10 capable of driving the cleaning brush 81 to move up and down when the filter cylinder 4 rotates is arranged between the shell 1 and the cleaning brush 81.

When the filtering cylinder 4 rotates, the cleaning brush 81 is lifted for a certain distance under the action of the second driving mechanism 10, so that the bristles 82 are separated from the meshes of the filtering net at the slag discharge port 7, the rotation of the filtering cylinder 4 is effectively prevented from being blocked, and when the filtering cylinder 4 rotates to a preset angle, the cleaning brush 81 descends again, and at the moment, the bristles 82 are inserted into the meshes of the filtering net switched to the slag discharge port 7, so that the effect of dredging the filtering net 6 is achieved.

In the invention, a partition wall 11 capable of partitioning a water inlet 3 and a slag discharge port 7 is arranged in the round water outlet pipe 2.

The partition wall 11 divides the water outlet circular tube 2 into two areas, namely a water outlet area and a cleaning mechanism 8 accommodating area, wherein the water outlet area can guide filtered water entering from the water inlet 3 to the front end of the water outlet circular tube 2, the accommodating area is used for installing the cleaning mechanism 8, and the partition wall 11 effectively prevents the filtered water from entering the slag discharge port 7. In another embodiment of the present invention, a dynamic sealing mechanism 12 may be disposed between the rear end surface of the circular water outlet pipe 2 and the cleaning mechanism 8, wherein the dynamic sealing mechanism 12 includes a vertical long groove 121 disposed on the rear end surface of the circular water outlet pipe 2, an interlayer space is disposed on the rear end surface of the circular water outlet pipe 2 outside the vertical long groove 121, a sealing long plate 122 capable of moving up and down is movably disposed in the interlayer space, the rear end of the cleaning brush 81 of the cleaning mechanism 8 is sealingly disposed in the middle of the sealing long plate 122, and when the cleaning brush 81 moves up or down, the sealing long plate 122 correspondingly moves up or down in the interlayer space, so as to always maintain the sealing of the vertical long groove 121, thereby achieving the effect of dynamic sealing. Because the brush hair 82 on the cleaning brush 81 inserts in the mesh of the filter screen 6 of row cinder notch 7 department, at this moment, the filter screen 6 of this department is sealed, the filterable water that gets into from water inlet 3 can only flow to play water pipe 2 front end, in addition, switch the process of filter chamber 5, although brush hair 82 breaks away from the mesh of the filter screen of row cinder notch 7 department for a short time, but filter drum 4 rotation process, water inlet 3 is closed gradually by the junction between two filter chambers 5 earlier, then is opening gradually, so, the water after the filtration only has minimum part to flow through row cinder notch 7, the water that flows out from this time just can carry out the back flush to the filter screen 6 of here.

In the invention, the rear end of the filtering cylinder 4 is provided with a connecting circular tube 13, the first driving mechanism 9 comprises a transmission gear 91 arranged on the connecting circular tube 13, the outer side of the rear end of the filtering cylinder 4 is provided with a stepping motor 92, a motor shaft of the stepping motor 92 is provided with a driving gear 93, and the driving gear 93 is meshed with the transmission gear 91.

The stepping motor 92 can be connected with a controller, and the rotation angle of the stepping motor 92 can be preset before use according to the number of the filter cavities 5, the ratio of the number of teeth of the driving gear 93 to the number of teeth of the transmission gear 91. When the stepping motor 92 is rotated by a fixed angle or number of turns, exactly one filter chamber 5 is switched. For example, when the number of the filter chambers 5 is 4 and the ratio of the number of the teeth of the driving gear 93 to the number of the teeth of the transmission gear 91 is 1:2, the stepping motor 92 is set to drive the driving gear 93 to rotate 180 °/half turn each time, and at this time, the transmission gear 91 rotates 90 °/four turns, and exactly one filter chamber 5 is switched.

The second driving mechanism 10 of the present invention includes a connecting rod 101 disposed on the lower side of the rear end of the cleaning brush 81, a limit rod 102 is disposed on the connecting rod 101, a telescopic support rod 103 is disposed on the upper side of the rear end of the cleaning brush 81, the movable end of the telescopic support rod 103 is connected to the cleaning brush 81, a return spring 104 is sleeved on the movable end of the telescopic support rod 103 between the fixed end of the telescopic support rod 103 and the cleaning brush 81, an annular guide groove 105 capable of moving the limit rod 102 up and down when the filter cylinder 4 rotates is disposed on the rear end of the filter cylinder 4, and the front end of the limit rod 102 is movably disposed in the annular guide groove 105.

The annular guide groove 105 is arranged in the rear side face of the transmission gear 91, the annular guide groove 105 comprises a circular groove body 1051, arc-shaped abdicating notch grooves 1052 which are the same in number with the filter cavities 5 and point to the outer side of the circular groove body 1051 are arranged on the circular groove body 1051 along the circumferential direction, and a transition arc surface is arranged between the arc-shaped abdicating notch grooves 1052 and the circular groove body 1051. In one embodiment of the present invention, the number of the filter cavities 5 is four, the number of the corresponding arc-shaped abdicating notches 1052 is also four, and the arc-shaped abdicating notches 1052 are disposed at positions corresponding to the filter cavities 5, when the filter cavity 5 at the upper side of the filter cylinder 4 is communicated with the water inlet 3, the limit rod 102 is pressed against the bottom of the arc-shaped abdicating notch 1052 at the lowermost end under the action of the return spring 104, at this time, the bristles of the cleaning brush 81 are inserted into the meshes of the filter screen 6 at the residue discharge port 7, so that the dirt in the meshes of the filter screen 6 is ejected out, when the filter cylinder 4 is driven by the first driving mechanism 9, the filter cylinder rotates a fixed angle, for example, the filter cylinder rotates 90 ° in this embodiment, during the rotation process, the limit rod 102 enters the circular groove 1051 from the bottom of the arc-shaped abdicating notches 1052 along the transition arc surface, so as to drive the limit rod 102 to drive the cleaning, the whole moves upwards, so that the bristles 82 are separated from meshes of the filter screen 6, when the filter cylinder 4 rotates for 90 degrees, the filter cavity 5 of the filter cylinder 4 is switched once, the limiting rod 102 falls into the arc-shaped abdicating notch 1052 at the lowest side again, and at the moment, the bristles 82 of the cleaning brush 81 are inserted into the meshes of the filter screen 6 which are newly switched into the slag discharge port 7, so that the dredging function is achieved. According to the invention, the air jet pump 220 is arranged in the shell 14, the air outlet of the air jet pump 220 is provided with the air blowing pipe 23, and the air blowing pipe 23 extends into the slag discharging port 7. In the invention, the air jet pump 220 can be connected with the controller, and the air jet pump 220 is controlled by the controller to jet air into the slag discharge port 7, so that garbage can be separated from the filter cavity 5 more easily. In the invention, a water level sensor can be arranged on the inner wall of the upper part of the water inlet pipe 160 and is connected with a controller, when the filtering efficiency is reduced due to excessive garbage accumulated in the filtering cavity 5 corresponding to the water inlet 3, the water level can continuously rise, when the water level rises to the water level sensor in the water inlet pipe 160, the water level sensor sends a signal to the controller, and after receiving the signal, the controller sends an instruction to the stepping motor 92 to enable the stepping motor 92 to rotate for a preset angle or number of turns, so that the filtering cavity 5 is switched, meanwhile, the conveying belt 173 is driven to move for a certain distance, the extrusion cylinder 182 is controlled to work, and the garbage in the conveying belt 173 is extruded. In the invention, the stepping motor 92, the extrusion cylinder 182 and the jet pump 220 can be controlled by independent switches without being connected with a controller, in this case, the sewage treatment equipment is semi-automatic equipment, and different switches can be controlled by hands to respectively control the stepping motor 92, the extrusion cylinder 182 or the jet pump 220 to work.

The automatic garbage collection box replacing mechanism 200 comprises a base 24 and is characterized in that: a movable bearing platform 25 is arranged on the base 24, an elastic supporting mechanism 26 is arranged between the movable bearing platform 25 and the base 24, a conveying rail 17 which inclines towards the movable bearing platform 25 is arranged on one side of the movable bearing platform 25, an intercepting mechanism 28 is arranged in the conveying rail 17, a toggle mechanism 29 which can drive the intercepting mechanism 28 to open or close is arranged on the base 24, a backward driving mechanism 30 which can drive the toggle mechanism 29 to move backward when the movable bearing platform 25 is pressed down is arranged on the base 24, a resetting mechanism 31 which can drive the toggle mechanism 29 to move forward so as to drive the intercepting mechanism 28 to open and intercept is arranged between the toggle mechanism 29 and the base 24, a resetting device 32 which can reset the intercepting mechanism 28 is arranged between the intercepting mechanism 28 and the conveying rail 17, and a pushing mechanism 33 which can push the garbage collecting box 16 on the movable bearing platform 25 forward when the toggle mechanism 29 moves forward is arranged between the movable bearing platform 25 and the toggle mechanism 29 .

In the invention, a garbage collection box 16 is arranged on a movable bearing platform 25, the movable bearing platform 25 overcomes the supporting force of an elastic supporting mechanism 26 to move downwards along with the increase of garbage in the garbage collection box 16, the backward driving mechanism 30 is triggered to make a toggle mechanism 29 move backwards in the downward moving process of the movable bearing platform 25, when the movable bearing platform 25 moves downwards to the lowest position, under the action of the return means 31, the toggle mechanism 29 moves forward and drives the intercepting means 28 open, so that the waste collection bin 16 on the rear side of the intercepting means 28 can be moved down along the conveyor track 17, after the toggle means 29 has passed the intercepting means 28, under the action of the resetting device, the intercepting mechanism 28 is reset to close, so that the garbage collection box 16 on the rear side is intercepted again, and the toggle mechanism 29 moves forwards to drive the pushing mechanism 33 to push the garbage collection box 16 on the movable bearing platform 25 out.

The elastic support mechanism 26 of the present invention includes a support base 261 fixedly disposed on the base 24, an expansion rod 262 is disposed on the support base 261, the upper end of the expansion rod 262 is fixedly connected to the middle of the bottom surface of the movable bearing platform 25, the lower end of the expansion rod 262 is fixedly disposed on the support base 261, a support spring 263 is disposed outside the expansion rod 262 and the support base 261, the upper end of the support spring 263 is pressed against the bottom surface of the movable bearing platform 25, and the lower end of the support spring 263 is pressed against the base 24 or the support base 261.

The telescopic rod 262 of the present invention may be a damping telescopic rod, a hydraulic telescopic rod or an oil hydraulic telescopic rod. Mainly plays a role of guiding or/and supporting. The telescoping rod 262 of the present invention may be a multi-section telescoping rod. The supporting seat 261 of the present invention may be composed of a plurality of supporting sheets uniformly arranged along the circumference, and the lower end of the supporting spring 263 may be clamped on the outer wall of the supporting sheets, so as to achieve better positioning and prevent the supporting spring 263 from twisting.

The intercepting mechanism 28 comprises an installation slot 281 arranged on a conveying track 17, the length direction of the installation slot 281 is vertical to the length direction of the conveying track 17, a rotatable arc-shaped intercepting block 282 is movably arranged in the installation slot 281 along the length direction, one side of the installation slot 281 along the length direction is provided with a shaft hole 285 penetrating through the side wall of the conveying track 17, the other side of the installation slot 281 along the length direction is provided with a connecting convex shaft 283, one side of the arc-shaped intercepting block 282 is provided with a plug-in shaft 284, the plug-in shaft 284 passes through the shaft hole 285 and extends out of the side wall of the conveying track 17, the other side of the arc-shaped intercepting block 282 is provided with a shaft sleeve 286 coaxially arranged with the plug-in shaft 284, the connecting convex shaft 283 is plugged in the shaft sleeve 286, the shaft sleeve 286 is provided with a limit slot 287, the outer wall of the connecting convex shaft 283 is provided with a positioning convex block, the positioning projection is arranged in the limiting notch 287, and a toggle groove 289 matched with the toggle mechanism 29 is arranged at the lower part of the arc-shaped surface of the arc-shaped interception block 282.

In the invention, the positioning bump is matched with the limiting notch 287, so that the arc-shaped interception block 282 is effectively prevented from rotating and transiting, and smooth resetting can be ensured under the action of the resetting device 32. The arc-shaped interception block 282 is a semi-cylinder interception block, a transition inclined surface 2823 is arranged between an arc-shaped surface 2821 and a plane 2822 at the upper end of the semi-cylinder interception block, the toggle groove 289 is arranged at the lower part of the arc-shaped surface 2821, and an arc-shaped transition surface 2824 convenient for the toggle mechanism 29 to pass is arranged between the lower side of the toggle groove 289 and the plane 2822. In the initial state of the intercepting mechanism 28 of the invention, under the action of the resetting device 32, the upper part of the arc-shaped intercepting block 282 turns upwards out of the bottom of the conveying track 17, and the arc-shaped surface 2821 of the arc-shaped intercepting block 282 faces the garbage collecting box 16 to be slid downwards at the rear side; at this time, the garbage collection box 16 behind the intercepting mechanism 28 is blocked from moving forward, because one side of the limiting notch 287 presses against the positioning protrusion, the arc-shaped intercepting block 282 will not rotate, at this time, the toggle mechanism 29 elastically deforms to cross the lower end of the arc-shaped intercepting block 282, when the toggle mechanism 29 moves forward under the action of the reset mechanism 31, the toggle mechanism 29 firstly enters the toggle slot 289 to drive the arc-shaped intercepting block 282 to rotate downward, when the other side of the limiting notch 287 presses against the positioning protrusion, the arc-shaped intercepting block 282 stops rotating, at this time, the plane 2822 of the arc-shaped intercepting block 282 is flush with the bottom surface of the conveying track 17 or is below the bottom surface of the conveying track 17, the garbage collection box 16 can move downward in the inclined conveying track 17 under the action of gravity, and after the toggle mechanism 29 continues to move forward over the arc-shaped transition surface 2824, the garbage collection box is separated from the arc-shaped intercepting block 282, under the action of the reset means 32, the arc-shaped intercepting piece 282 is rotated upward so that the following garbage collection bin 16 is intercepted, thereby realizing automatic replacement of the garbage collection bin 16.

The resetting device 32 comprises a coil spring 321, wherein the coil spring 321 is sleeved on an inserting shaft 284 outside the side wall of the conveying track 17, a positioning convex column 322 is arranged on the side wall of the conveying track 17, the outer end of the coil spring 321 is fixedly connected to the positioning convex column 322, a clamping hook 323 is arranged at the inner end of the coil spring 321, an abdicating groove 324 is arranged at the outer end of the inserting shaft 284, the inner end of the coil spring 321 is arranged in the abdicating groove 324, a positioning clamping plate 325 is arranged at the position, corresponding to the abdicating groove 324, of the inner wall of the outer end of the inserting shaft 284, and the clamping hook 323 is clamped on the positioning clamping plate 325.

The coil spring 321 of the present invention is effective to return the insertion shaft 284 to rotate, thereby returning the arc-shaped intercepting block 282 upward. In another embodiment of the resetting device 32 of the present invention, the resetting device 32 includes a resetting torsion spring, the resetting torsion spring is sleeved on the insertion shaft 284, and one end of the resetting torsion spring is connected with the insertion shaft 284, and the resetting torsion spring is connected with the positioning convex column 322 arranged on the side wall of the conveying track 17.

The toggle mechanism 29 of the present invention comprises a support 291, a guide rail 292 is arranged on the support 291, a sliding seat 293 is movably arranged on the guide rail 292, a fixed toggle lever 294 is arranged at the upper end of the sliding seat 293, a hinge seat 295 is arranged at the upper end of the fixed toggle lever 294, a movable toggle lever 296 is hinged in the hinge seat 295, a positioning stopper 297 capable of preventing the movable toggle lever 296 from rotating backward is arranged at the rear side of the hinge seat 295, an installation notch 298 is arranged at the hinge joint of the movable toggle lever 296 and the hinge seat 295, and a torsion spring 299 capable of enabling the movable toggle lever 296 to return upward is arranged in the installation notch 298.

In the present invention, guide rails 292 are respectively disposed on the left and right sides of the supporting frame 291, a guide groove 2920 is disposed at a position of the sliding seat 293 corresponding to the guide rails 292, and the guide rails 292 are disposed in the guide grooves 2920. In one embodiment of the guide rail 292 of the present invention, the interface of the guide rail 292 is triangular or trapezoidal and the guide groove 2920 is shaped to match the shape of the guide rail 292, such as a dovetail groove. In another embodiment of the present invention, a sliding wheel may be provided on the sliding seat 293, and the sliding wheel is clamped on the guide rail 292. The hinge base 295 of the present invention includes a base 2951, a hinge shaft 2952 is disposed on the base 2951, a hinge shaft hole 2953 is disposed at a lower end of the movable shift lever 296, and the hinge shaft 2952 is disposed in the hinge shaft hole 2953.

The backward driving mechanism 30 of the present invention comprises a first supporting seat 301 and a second supporting seat 302 which are arranged on the front and back sides of a base 24 at intervals, a main gear 303 is arranged on the first supporting seat 301, a main belt pulley 304 is arranged on the outer side of the main gear 303, a secondary belt pulley 305 is arranged on the second supporting seat 302, a secondary gear 306 is arranged on the outer side of the secondary belt pulley 305, a driving belt 307 is sleeved on the main belt pulley 304 and the secondary belt pulley 305, a driving rack 308 which can be meshed with the main gear 303 is arranged at the position of a movable bearing platform 25 corresponding to the main gear 303, a driving rack 3080 which can be meshed with the secondary gear 306 is arranged on the toggle mechanism 29 along the moving direction, a T-shaped positioning guide block 309 is arranged on the inner side of the driving rack 3080, a T-shaped longitudinal abdicating groove 310 is arranged on the toggle mechanism 29, the T-shaped positioning guide block 309 is movably arranged in the T-shaped longitudinal abdicating groove 310, a return auxiliary spring 311 is arranged between the upper end face of the T-shaped positioning guide block 309 and the upper end face of the T-shaped longitudinal abdicating groove 310, a first guide seat 3012 is arranged on the base 24 at the rear side of the second support seat 302, a first guide inclined plane 3013 enabling the transmission rack 3080 to move upwards is arranged on the front side face of the upper portion of the first guide seat 3012, a second guide seat 3014 is arranged on the upper portion of the first support seat 301, a second guide inclined plane 3015 enabling the transmission rack 3080 to move downwards is arranged on the rear side face of the lower portion of the second guide seat 3014, a first positioning hole 3016 and a second positioning hole 3017 are correspondingly arranged on one side of the toggle mechanism 29 corresponding to the transmission rack 3080 from top to bottom, and an elastic positioning ball enabling the transmission rack 3080 to be positioned at the first positioning hole 3016 or the second positioning hole 3017 is arranged on one side of the transmission rack 3080 facing the toggle mechanism 29.

If the position of the driving rack 308 interferes with the position of the second guide seat 3014, a relief hole 3018 may be formed at a corresponding position of the second guide seat 3014 to provide a position for the driving rack 308 to move downward, and also to guide the driving rack 308 to prevent the driving rack 308 from being separated from the main gear 303. The structure of the elastic positioning ball can comprise a groove hole arranged in the transmission rack 3080, a small spring is arranged in the groove hole, and a ball or a small cylinder is arranged at the upper end of the small spring.

In another embodiment of the backward driving mechanism 30 of the present invention, the backward driving mechanism 30 includes a first supporting seat 301 and a second supporting seat 302 disposed on the front and back sides of the base 24 at an interval, a main gear 303 is disposed on the first supporting seat 301, a main pulley 304 is disposed on the outer side of the main gear 303, a secondary pulley 305 is disposed on the second supporting seat 302, a secondary gear 306 is disposed on the outer side of the secondary pulley 305, a driving belt 307 is sleeved on the main pulley 304 and the secondary pulley 305, a driving rack 308 capable of meshing with the main gear 303 is disposed at a position of the movable carrier platform 25 corresponding to the main gear 303, a driving rack 3080 capable of meshing with the secondary gear 306 is disposed on the toggle mechanism 29 along the moving direction, and a unidirectional tooth is disposed on the driving rack 3080. In the present invention, when the driving rack 308 is lowered to the lowest position, the main gear 303 is no longer rotated, the sliding seat 293 moves forward under the action of the reset mechanism 31, and the one-way teeth cannot reversely drive the pinion 306, so that the sliding seat 293 can smoothly move forward.

The reset mechanism 31 of the invention comprises a positioning seat 3101 arranged on the rear side of the base 24, a first guide post 3102 is arranged on the front side surface of the positioning seat 3101, a second guide post 3103 is arranged at the position of the toggle mechanism 29 corresponding to the first guide post 3102, and a reset main spring 3104 is sleeved on the first guide post 3102 and the second guide post 3103.

The pushing mechanism 33 of the present invention includes a push rod 331 disposed at the front end of the toggle mechanism 29, and a relief receiving groove 332 is disposed at a position corresponding to the push rod 331 at the rear side of the movable carrier 25.

In the initial state of the invention, the elastic positioning ball is clamped in the second positioning hole 3017, and under the extrusion action of the reset secondary spring 311, the T-shaped positioning guide block 309 of the transmission rack 3080 is positioned at the lower end of the T-shaped longitudinal abdicating groove 310, and at the moment, the transmission rack 3080 can be meshed with the secondary gear 306; when the garbage in the garbage collection box 16 on the movable carrier 25 is continuously increased and the compression elastic support mechanism 26 is moved downward under the action of gravity, when the driving rack 308 is moved downward to the position engaged with the main gear 303, the main gear 303 starts to rotate, the auxiliary gear 306 is driven to rotate by the driving belt, the driving rack 3080 is driven by the auxiliary gear 306, the sliding seat 293 of the toggle mechanism 29 moves backward on the guide rail 292, the movable shift lever 296 firstly presses the plane 2822 of the arc-shaped block 282, the arc-shaped block 282 cannot rotate because one side of the limit notch 287 is pressed on the positioning bump, the movable shift lever 296 is forced to rotate backward, the sliding seat 293 continues to move backward, the movable shift lever 296 moves over the arc-shaped block 282 and then returns upward under the action of the torsion spring 299, at the same time, the return main spring 3104 in the return mechanism 31 is compressed and stored energy, when the movable carrier 25 is moved downward to the lower position, the rear end of the transmission rack 3080 touches the first guiding inclined plane 3013, the transmission rack 3080 moves upwards, the elastic positioning ball is separated from the second positioning hole 3017 and is clamped into the first positioning hole 3016, at this time, the transmission rack 3080 is separated from the pinion 306, the reset main spring 3104 in the reset mechanism 31 is released towards the front side direction, thereby driving the sliding seat 293 of the toggle mechanism 29 to move forwards quickly on the guide rail 292, the push rod 331 of the push-out mechanism 33 pushes the rear side surface of the garbage collection box 16 to move forwards and output the movable bearing platform 25, when the movable bearing platform 25 loses the pressure of the garbage collection box 16, the movable bearing platform resets upwards under the action of the elastic supporting mechanism 26, and because the yielding accommodating groove 251 is arranged at the rear side of the movable bearing platform 25, the push rod 331 cannot cause interference and blocking on the movable bearing platform 25. During the forward movement of the sliding seat 293, the movable shift lever 296 enters the shift groove 289 and presses against the arc-shaped transition surface 2824 at the lower end of the shift groove 289, due to the limitation of the positioning stopper 297, the movable shift lever 296 cannot rotate backward but drives the arc-shaped interception block 282 to rotate, so that the plane 2822 of the arc-shaped interception block 282 is flush with the bottom surface of the conveying track 17 or below the bottom surface of the conveying track 17, the garbage collection box 16 in the conveying track 17 can move downward under the action of gravity, after the movable shift lever 296 passes over the arc-shaped transition surface 2824 at the lower end of the shift groove 289 as the sliding seat 293 continues to move forward, the arc-shaped interception block 282 rotates reversely under the action of the coil spring 321 of the resetting device 32, so that the upper end of the arc-shaped interception block 282 protrudes out of the bottom surface of the conveying track 17 again, and the garbage collection box. The refuse collection bin 16, which has passed the intercepting means 28, continues to move forward to fall into the reset upward mobile carrier 25, completing the automatic change.

A sewage treatment method is characterized by comprising the following steps:

In the invention, the sewage filtered by the sewage treatment device is sent into the regulating tank, so that the sewage is not influenced by the peak flow or concentration change of the wastewater, the sewage treatment is effectively carried out, and the sewage regulated by the regulating tank

The sewage treated by the pre-denitrification tank enters an anaerobic tank, the main function of the anaerobic tank is to release phosphorus, and meanwhile, part of organic matters enter the anaerobic tank

Ammoniating; the sewage enters an anoxic tank after being treated by an anaerobic tank and then enters an aerobic tank, wherein the main function of the anoxic tank is denitrification; the aerobic tank is multifunctional, can take place nitration reaction, improves the total nitrogen removal effect of ammonia nitrogen and gets rid of the organic matter, further improves sewage treatment effect through the processing in anaerobism pond, oxygen deficiency pond and aerobic tank, gets into the sedimentation tank at last and carries out the sedimentation treatment, and whole treatment is effectual. After the precipitation treatment, ultraviolet sterilization is carried out under the condition of pressurization, so that bacteria are effectively killed.

In the invention, the filler and the active bacteria can be arranged in the aerobic tank, the filler forms a biological film, the active sludge is inoculated in the aerobic tank, when the dissolved oxygen is controlled at a proper concentration, a concentration gradient with high surface DO and low inner DO can be formed due to the change of the floc size of the active sludge or the thickness of the biological film, so that different dissolved oxygen conditions are formed, and further necessary conditions are created for synchronous nitrification and denitrification, so that the simultaneous occurrence of the dissolved oxygen and the active bacteria in the same reactor becomes possible. The synchronous nitrification and denitrification can greatly reduce the reaction time and the volume of the reactor and improve the effect of removing the total nitrogen of the ammonia nitrogen. In addition, in the aerobic tank, the newly added organic matters are partially decomposed into micromolecular organic matters under the action of active bacteria, and then are subjected to oxidative decomposition into inorganic matters such as CO2, H2O and the like; the other part is synthesized into cells. Under the condition of low sludge load, the cells are used as nutrients, and under the action of active bacteria, part of the cells are decomposed into micromolecular organic matters and then are oxidized and decomposed into inorganic matters such as CO2, H2O and the like; the other part is synthesized again into new cells. And by analogy, under the condition of low sludge load, the new cells continue to be metabolized for decomposition and synthesis under the action of active bacteria as nutrients until the cells are finally metabolized into inorganic substances such as CO2, H2O and the like. From the whole process of decomposition and anabolism, the organic matters are completely metabolized, and the organic sludge in the system is not enriched and increased. Part of COD is converted into new activated sludge, and simultaneously part of aged sludge is digested and mineralized, so that the automatic digestion and degradation balance of sludge are realized, and the organic sludge discharge is reduced.

While there have been shown and described the fundamental principles and principal features of the invention and advantages thereof, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are given by way of illustration of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rubbish conveying mechanism, is including first rotation axis (171) and second rotation axis (172) that the interval set up in casing (14), first rotation axis (171) set up in filter equipment (15) below, second rotation axis (172) set up in rubbish collecting box (16) top first rotation axis (171) and second rotation axis (172) go up the cover and are equipped with conveyer belt (173), be equipped with wash port (174) on conveyer belt (173), the interval equipartition has baffle (175) on conveyer belt (173), first rotation axis (171) are connected with first actuating mechanism (9) through drive mechanism (176), be equipped with in casing (14) and carry out extrusion dehydration's extrusion mechanism (18) to the rubbish on conveyer belt (173).

2. A waste conveying mechanism as claimed in claim 1, wherein: and the outlet end of the conveying belt (173) is provided with an ejection mechanism (21) which can eject the garbage in the drain hole (174), and the ejection mechanism (21) comprises ejector pin groups (22) which are uniformly distributed on a second rotating shaft (172) along the circumferential direction.

3. A waste conveying mechanism as claimed in claim 1, wherein: the extrusion mechanism (18) comprises a supporting plate (181) inserted in the conveying belt (173), one side of the supporting plate (181) is fixedly connected to the inner wall of the machine shell (14), an extrusion cylinder (182) is arranged in the machine shell (14), and an extrusion plate (183) is arranged on a cylinder shaft of the extrusion cylinder (182).

4. A waste conveying mechanism as claimed in claim 3, wherein: the water collecting device is characterized in that a water collecting tank (1811) is arranged on the supporting plate (181), a water collecting pipe (1812) is arranged on the machine shell (14), one end of the water collecting tank (1811) is connected with the water collecting pipe (1812), one end of the water collecting pipe (1812) is provided with a circular drainage pipe (1813), and the circular drainage pipe (1813) extends out of the machine shell (14) and is connected with the circular drainage pipe (2).

5. A waste conveying mechanism as claimed in claim 3, wherein: the technical scheme is that a guide seat (184) is arranged in the machine shell (14), a guide hole is formed in the guide seat (184), a guide rod (185) is arranged on the extrusion plate (183), the guide rod (185) is movably arranged in the guide hole, an accommodating groove is formed in the extrusion plate (183), a movable plate (186) is arranged in the accommodating groove, and a buffer spring (187) is arranged between the movable plate (186) and the bottom of the accommodating groove.

6. The utility model provides a sewage treatment system, including sewage filtration equipment (150), equalizing basin (36), denitration pond (37) in advance, anaerobism pond (38), oxygen deficiency pond (39), good oxygen pond (40), sedimentation tank (41), pressure boost aeration pump (42) and degassing unit (43), its characterized in that: the sewage filtering device (150) comprises a machine shell (14), a filtering device (15) is arranged in one side of the machine shell (14), a water inlet pipe (16) communicated with the water inlet end of the filtering device (15) is arranged at the upper part of the machine shell (14), an automatic garbage collection box replacing mechanism (200) is arranged at the other side of the machine shell (14), the garbage conveying mechanism (17) according to any one of claims 1 to 5 is arranged in the machine shell (14) between the filtering device (15) and the automatic garbage collection box replacing mechanism (200), an outlet (34) through which the garbage collection box (16) can pass is arranged at the front side of the machine shell (14), an unloading slide way (35) for assisting the garbage collection box (16) to be sent out is arranged at the outer side of the outlet (34), the water outlet of the sewage filtering device (150) is connected with the water inlet of an adjusting pool (36) through a first water feeding pipe, the water inlet of the sewage filtering device (150) is connected with a sewage pipe, a water suction pump (45) is arranged at the bottom of the regulating tank (36), a water delivery pipe (451) of the water suction pump (45) extends into the upper part of the pre-denitration tank (37), a connecting pipe (46) is arranged between the pre-denitration tank (37) and the anaerobic tank (38), one end of the connecting pipe (46) extends into the bottom of the pre-denitration tank (37), the other end of the connecting pipe (46) extends into the bottom of the anaerobic tank (38), a first sealing cover (47) is arranged at the upper part of the anaerobic tank (38), an air suction pipe (48) is arranged on the first sealing cover (47), the upper part of the anaerobic tank (38) is connected with an anoxic tank (39) through a second water supply pipe (49), a first valve (50) is arranged on the second water supply pipe (49), and the air suction pipe (48) is connected with an air inlet pipe (51) of a pressurizing aeration pump (42), an air inlet branch pipe (52) is arranged on the air inlet pipe (51), a third valve (53) is arranged on the air exhaust pipe (48), a fourth valve (54) is arranged on the air inlet branch pipe (52), the upper part of the anoxic tank (39) is connected with the aerobic tank (40) through a third water feeding pipe (391), a stirring shaft (55) is arranged in the aerobic tank (40), an air feeding channel is arranged in the stirring shaft (55), an aeration pipe (56) which can rotate along with the stirring shaft (55) is arranged on the stirring shaft (55), the aeration pipe (56) is communicated with the air feeding channel, a stirring motor (57) is arranged on the upper part of the aerobic tank (40), the stirring shaft (55) is connected with the stirring motor (57), the air feeding channel is connected with a first air outlet pipe (58) of the pressurizing aeration pump (42), a fifth valve (59) is arranged on the first air outlet pipe (58), the upper part of the aerobic tank (40) is connected with the sedimentation tank (41) through a fourth water feeding pipe (60), a sludge discharging pipe (61) is arranged at the bottom of the sedimentation tank (41), the sludge discharging pipe (61) is connected with a sludge conveying pump (62), a second valve (63) is arranged on the sludge discharging pipe (61), the upper part of the sedimentation tank (41) is connected with a sterilizing device (43) through a fifth water feeding pipe (64), a second sealing cover (65) is arranged at the upper part of the sterilizing device (43), a pressure increasing pipe (66), a pressure gauge (67) and an exhaust valve (68) are arranged on the second sealing cover (65), a plurality of ultraviolet sterilizing pipes (69) are arranged in the sterilizing device (43), the pressure increasing pipe (66) is connected with a second air outlet pipe (70) of a pressure increasing aeration pump (42), and a sixth valve (71) is arranged on the second air outlet pipe (70), a seventh valve (72) is arranged on the fifth water feeding pipe (64), a water discharge pipe (73) is arranged at the lower part of the sterilizing device (43), and an eighth valve (74) is arranged on the water discharge pipe (73).

7. The wastewater treatment system according to claim 6, wherein: the water inlet end of the fifth water supply pipe (64) is connected with a water pump (75), and the water pump (75) is arranged at the upper part of the sedimentation tank (41).

8. The wastewater treatment system according to claim 6, wherein: filter equipment (15) is including casing (1) be equipped with play water pipe (2) in casing (1) play water pipe (2) upside is equipped with water inlet (3) the cover is equipped with and filters drum (4) on play water pipe (2) it is provided with a plurality of filter chambers (5) along the circumferencial direction interval on the corresponding position of filter drum (4) and water inlet (3) filter chamber (5) bottom is equipped with filter screen (6) casing (1) downside is equipped with row cinder notch (7) with the corresponding position of filter chamber (5) be equipped with in play water pipe (2) and carry out clear clean mechanism (8) to filter screen (6) casing (1) is equipped with outward and drives the first actuating mechanism (9) that filters drum (4) and rotate fixed angle.

9. The wastewater treatment system according to claim 6, wherein: automatic mechanism (200) of changing of garbage collection box is including base (24), its characterized in that: a movable bearing platform (25) is arranged on the base (24), an elastic supporting mechanism (26) is arranged between the movable bearing platform (25) and the base (24), a conveying track (17) inclined towards the movable bearing platform (25) is arranged on one side of the movable bearing platform (25), an intercepting mechanism (28) is arranged in the conveying track (17), a toggle mechanism (29) capable of driving the intercepting mechanism (28) to open or close is arranged on the base (24), a retreating driving mechanism (30) capable of enabling the toggle mechanism (29) to move backwards when the movable bearing platform (25) is pressed down is arranged on the base (24), a resetting mechanism (31) capable of enabling the toggle mechanism (29) to move forwards so as to enable the intercepting mechanism (28) to be intercepted and opened is arranged between the toggle mechanism (29) and the base (24), a resetting device (32) capable of enabling the intercepting mechanism (28) to reset is arranged between the intercepting mechanism (28) and the conveying track (17), a pushing mechanism (33) which can push the garbage collection box (16) on the movable bearing platform (25) forward when the toggle mechanism (29) is reset forward and moves is arranged between the toggle mechanisms (29) of the movable bearing platform (25).

10. A sewage treatment method is characterized by comprising the following steps:

s3, opening a third valve and a fifth valve, closing a fourth valve and a sixth valve, controlling a pressurizing aeration pump to work, and enabling a negative pressure to be formed in the anaerobic tank, so that the sewage treated by the pre-denitrification tank is input into the anaerobic tank through a connecting pipe for treatment, phosphorus in the sewage is released, meanwhile, part of organic matters are aminated, closing the third valve (53) and opening the fourth valve (54);