CN106746458B

CN106746458B - Excrement treatment system

Info

Publication number: CN106746458B
Application number: CN201611219084.3A
Authority: CN
Inventors: 贺同雷
Original assignee: Guangdong Xiangbo Ecological Technology Co ltd
Current assignee: Guangdong Xiangbo Ecological Technology Co ltd
Priority date: 2016-12-26
Filing date: 2016-12-26
Publication date: 2023-03-31
Anticipated expiration: 2036-12-26
Also published as: CN106746458A

Abstract

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system. The sewage and excrement treatment system comprises a vacuum chamber, a vacuum pump connected with the vacuum chamber, a first aeration device positioned in the vacuum chamber, a primary separation device communicated with the vacuum chamber, a flocculant dosing tank, a mixing tank communicated with the primary separation device and the flocculant dosing tank, a second aeration device arranged in the mixing tank for stirring, a secondary separation device communicated with the mixing tank for receiving sewage with flocculates and separating out the sewage and dried solid dirt, and a fan communicated with the first aeration device and the second aeration device. The sewage and excrement treatment system has the advantages of simple structure, automatic sewage and excrement sucking, good stirring and sewage and excrement smashing effects, good mixing effect, difficulty in blocking of a pipeline, simple overall structure, low cost, high efficiency and good treatment effect.

Description

Excrement treatment system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system.

Background

Environmental pollution in modern society becomes more serious day by day, environmental management and protection become social responsibility which is not slow, and the amount of the excrement and garbage produced every day is huge, if the excrement and garbage can not be effectively treated in time, the environment can be seriously harmed, and the environmental pollution is aggravated.

At present, the method for treating the excrement is complex and has low efficiency. Thus, an efficient fecal treatment system is needed.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide an efficient excrement treatment system.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

the invention provides a sewage treatment system, comprising: a vacuum chamber; the vacuum pump is connected with the vacuum chamber and can form negative pressure in the vacuum chamber so as to suck the excrement into the vacuum chamber; the first aeration device is positioned in the vacuum chamber and can stir and break up the polluted manure; the primary separation equipment is communicated with the vacuum chamber and can receive the crushed excrement and separate larger dirt and sewage containing smaller dirt; the flocculant dosing box is used for storing a flocculant; the mixing box is communicated with the primary separation equipment and the flocculating agent dosing box so as to be capable of receiving sewage containing small dirt and the flocculating agent and enabling the sewage and the flocculating agent to form flocculate therein; the second aeration device is arranged in the mixing box to stir; the secondary separation equipment is communicated with the mixing box so as to receive the sewage with flocculates and separate the sewage and dry solid dirt; and the fan is communicated with the first aeration device and the second aeration device.

According to the invention, the outlet of the vacuum chamber is hermetically connected with the inlet of the primary separation equipment through a pipeline so as to convey the smashed excrement with air pressure.

According to the invention, the liquid outlet of the primary separation equipment and the outlet of the flocculant dosing tank are communicated with the inlet of the mixing tank through the same pipeline mixer.

According to the invention, the primary separation equipment is a rotary filter screen cylinder which comprises a roller and a filter screen covered on the periphery of the roller, the wall of the roller is provided with screen holes, the inner side of the wall of the roller is provided with a plurality of arc blades which form a spiral discharge channel when the roller rotates, and the arc blades are uniformly arranged along a spiral track at intervals; the secondary separation equipment is a stacked screw type sludge dewatering machine.

According to the invention, the device also comprises 4 rolling supporting seats which are arranged in a rectangular shape, each rolling supporting seat comprises a base and a roll shaft which is rotatably supported on the base, a first positioning mechanism is arranged on each roll shaft, shaft bushings are arranged at two ends of each rotary filter screen cylinder, each rotary filter screen cylinder is rotatably supported on the roll shaft of each rolling supporting seat through the two shaft bushings, a second positioning mechanism is arranged on each shaft bushing, and the first positioning mechanism and the second positioning mechanism are matched to form the axial limit of the rotary filter screen cylinder.

According to the invention, the inlet end of the rotary filter screen cylinder is provided with the air injection device, the air injection device is connected with the fan, and the injection direction of the air injection device faces to the inside of the rotary filter screen cylinder and forms an included angle with the axis of the rotary filter screen cylinder.

According to the invention, the aeration system also comprises a third aeration device arranged in the flocculant dosing tank, and the third aeration device is communicated with the fan.

According to the invention, the first aeration device, the second aeration device and the third aeration device are aeration pipes, the inner diameter of each aeration pipe is 20mm, two rows of air outlet holes symmetrical to the longitudinal central plane of each aeration pipe are arranged on each aeration pipe, all the air outlet holes in each row of air holes are arranged in the direction parallel to the longitudinal central plane, the distance between every two adjacent air outlet holes in each row of air holes is within the range of 20-50mm, the included angle between each air outlet hole and the longitudinal central plane is 45 degrees, and the aperture of each air outlet hole is within the range of 2-4.5 mm; the first aeration device is horizontally arranged at the lower part of the vacuum chamber, and an air outlet hole on the first aeration device faces to the upper part of the vacuum chamber; the second aeration device is horizontally arranged at the lower part of the mixing box, and an air outlet hole on the second aeration device faces to the upper part of the mixing box; the third aeration device is horizontally arranged at the lower part of the flocculant dosing tank, and an air outlet on the third aeration device faces to the upper part of the flocculant dosing tank.

According to the present invention, the aeration system further comprises a first regulating valve located on a communication line of the first aeration apparatus and the fan and controlling an aeration air volume entering into the first aeration apparatus, a second regulating valve located on a communication line of the second aeration apparatus and the fan and controlling an aeration air volume entering into the second aeration apparatus, and a third regulating valve located on a communication line of the third aeration apparatus and the fan and controlling an aeration air volume entering into the third aeration apparatus, the first regulating valve, the second regulating valve, and the third regulating valve having openings such that an air volume ratio of air flows passing through the three is 1:2:1.

according to the invention, two vacuum chambers are arranged, a vacuum pump is respectively communicated with the two vacuum chambers through a first connecting pipe and a second connecting pipe, and a first valve and a second valve are respectively arranged on the first connecting pipe and the second connecting pipe; the inlets of the two vacuum chambers are respectively connected with a first suction pipe and a second suction pipe, and the first suction pipe and the second suction pipe are respectively provided with a third valve and a fourth valve; the outlets of the two vacuum chambers are respectively connected with a first discharge pipe and a second discharge pipe, and a fifth valve and a sixth valve are respectively arranged on the first discharge pipe and the second discharge pipe; the vacuum cleaner is also provided with a controller which is in communication connection with the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve so as to enable the two vacuum chambers to alternately suck and discharge sewage by controlling the opening and closing of the valves, and when one vacuum chamber is in a sewage suction state, the other vacuum chamber is in a sewage discharge state.

(III) advantageous effects

The invention has the beneficial effects that:

in the sewage treatment system, firstly, the vacuum pump connected with the vacuum chamber can enable the interior of the vacuum chamber to form negative pressure, so that the sewage is pumped into the vacuum chamber, and the automatic sewage suction function is realized; secondly, the first aeration device arranged in the vacuum chamber directly smashes and stirs the sewage manure, the effect of smashing and stirring the sewage manure is excellent, no other smashing device needs to be additionally arranged in the vacuum chamber, and the integral structure of the vacuum chamber for smashing and stirring the sewage manure is simplified; thirdly, the first aeration device arranged in the vacuum chamber can enable the vacuum chamber to have certain pressure, so that the flow velocity of the broken excrement is increased, the pipeline blockage is reduced, and the vacuum chamber is favorably emptied; fourthly, the second aeration device arranged in the mixing box utilizes the exposed gas to stir the excrement and the flocculating agent, so that the flocculation effect and the efficiency are improved, no other stirring device is required to be additionally arranged in the mixing box, the integral structure for stirring the excrement and the flocculating agent in the mixing box is simplified, and the cost is reduced; fifthly, the sewage is smashed and stirred in an aeration mode, so that the condition that the sewage is bonded on a stirring device (such as a stirring paddle) does not exist, a shutdown cleaning step is not needed, the labor is saved, the cost is reduced, and the working efficiency is high; sixthly, as a whole, the vacuum chamber with the first aeration device is arranged at the upstream of the primary separation equipment, the mixing box and the secondary separation equipment, so that the sewage and excrement entering the primary separation equipment has certain pressure, the flow speed of the sewage and excrement is increased compared with that of the prior art, the blockage of a subsequent pipeline is prevented, the progress of the sewage and excrement treatment is facilitated, and the treatment efficiency is improved; seventhly, the larger solid is separated in the first stage, and then the flocculant is added to differentiate the smaller dirt and the water so that the smaller dirt can be separated by the subsequent separation equipment more easily, so that the overall separation effect is better, and the efficiency is higher. In conclusion, the sewage and excrement treatment system has the advantages of simple structure, automatic sewage and excrement sucking, good stirring and sewage and excrement smashing effects, good flocculation effect, difficulty in pipeline blockage, simple overall structure, low cost, high efficiency and good treatment effect.

Drawings

FIG. 1 is a schematic view of a fecal treatment system as disclosed in one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a first aeration apparatus, a second aeration apparatus and a third aeration apparatus in the sewage treatment system of FIG. 1;

FIG. 3 is a schematic view of a primary separating device, a motor, a transmission device and a rolling support seat in the fecal treatment system of FIG. 1;

fig. 4 is a schematic view of a primary separating device and a rolling support base in the fecal treatment system of fig. 1.

FIG. 5 is a schematic perspective view of a primary separation device in the fecal treatment system of FIG. 1;

fig. 6 is a schematic view of a primary separating apparatus in the fecal treatment system of fig. 1, wherein the arrangement of the arcuate blades is primarily shown.

[ description of reference ]

In the figure:

1: a first vacuum chamber; 2: a second vacuum chamber; 3: a vacuum pump; 4: a first aeration device; 5: a first stage separation device; 6: a flocculant dosing tank; 7: a mixing box; 8: a second aeration device; 9: a secondary separation device; 10: a fan; 11: a pipeline mixer; 12: a drum; 13: filtering with a screen; 14: rolling the supporting seat; 15: a base; 16: a roll shaft; 17: a first positioning mechanism; 18: a shaft bushing; 19: a second positioning mechanism; 20: a third aeration device; 21: an air outlet; 22: a first regulating valve; 23: a second regulating valve; 24: a third regulating valve; 25: a first connecting pipe; 26: a second connecting pipe; 27: a first valve; 28: a second valve; 29: a first suction duct; 30: a second suction duct; 31: a third valve; 32: a fourth valve; 33: a first discharge pipe; 34: a second discharge pipe; 35: a fifth valve; 36: a sixth valve; 37: a controller; 38: a first liquid level sensor; 39: a second liquid level sensor; 40: an arc-shaped blade; 41: a motor; 42: a transmission device; 43: an end cap; 44: an outer tooth; 45: a drive chain; 46: an air injection device: 47: a gear; r: the inner diameter of the aeration pipe; θ: the air outlet hole and the longitudinal central plane form an included angle.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 6, in the present embodiment, the fecal sewage treatment system includes vacuum chambers (in the present embodiment, two vacuum chambers are provided, namely, a first vacuum chamber 1 and a second vacuum chamber 2), a vacuum pump 3, a first aeration device 4, a primary separation device 5, a flocculant dosing tank 6, a mixing tank 7, a second aeration device 8, a secondary separation device 9, and a fan 10.

Wherein, the vacuum pump 3 is connected with the vacuum chamber and can form negative pressure in the vacuum chamber to suck the excrement into the vacuum chamber; the first aeration device 4 is positioned in the vacuum chamber and can stir and break the dirty manure; the inlet of the primary separation equipment 5 is communicated with the outlet of the vacuum chamber, and can receive the smashed sewage and separate larger sewage and sewage containing smaller sewage; the flocculating agent dosing box 6 is used for storing flocculating agent, and the flocculating agent is any flocculating agent known by the technical personnel in the field of sewage treatment; the inlet of the mixing tank 7 communicates with the liquid outlet of the primary separating apparatus 5 and the outlet of the flocculant dosing tank 6 to be able to receive sewage containing smaller contaminants (discharged from the liquid outlet) and flocculant and for both to form flocs therein; a second aeration device 8 is provided in the mixing tank 7 to agitate the flocculant, the sewage containing smaller contaminants and the flocs therein to eventually form floc-laden sewage (of course, there may be excess flocculant or a small amount of smaller contaminants that do not form flocs therein); the inlet of the secondary separation device 9 is communicated with the outlet of the mixing box 7 so as to receive the sewage with flocculate and separate the sewage and dry solid dirt; the fan 10 is in communication with the first aeration device 4 and the second aeration device 8.

In conclusion, the sewage manure is pumped into a vacuum chamber in vacuum for aeration and smashing, the smashed sewage manure enters a primary separation device 5 to separate large sewage and sewage containing small sewage, the sewage containing the small sewage is subjected to aeration stirring and flocculation reaction with a flocculating agent in a mixing box 7 to form sewage containing flocculates, and the sewage containing the flocculates is separated by a secondary separation device 9 to form sewage and dry solid sewage.

Therefore, firstly, the vacuum pump 3 connected with the vacuum chamber can enable the interior of the vacuum chamber to form negative pressure, so that the sewage and the excrement are pumped into the vacuum chamber, and the automatic excrement sucking function is realized; secondly, the first aeration device 4 arranged in the vacuum chamber directly smashes and stirs the excrement, the effect of smashing and stirring the excrement is excellent, no other smashing device needs to be additionally arranged in the vacuum chamber, and the integral structure used for smashing and stirring the excrement in the vacuum chamber is simplified; thirdly, the first aeration device 4 arranged in the vacuum chamber can enable the vacuum chamber to have certain pressure, so that the flow speed of the broken excrement is increased, the pipeline blockage is reduced, and the vacuum chamber is favorably emptied; fourthly, the second aeration device 8 arranged in the mixing box 7 utilizes the exposed gas to stir the sewage manure and the flocculating agent, so that the flocculation effect and the flocculation efficiency are improved, no other stirring device is required to be additionally arranged in the mixing box 7, the integral structure of the mixing box 7 for stirring the sewage manure and the flocculating agent is simplified, and the cost is reduced; fifthly, the sewage is smashed and stirred in an aeration mode, so that the condition that the sewage is adhered to a stirring device (such as a stirring paddle) does not exist, a shutdown cleaning step is not needed, the labor is saved, the cost is reduced, and the working efficiency is high; sixthly, as a whole, the vacuum chamber with the first aeration device 4 is arranged at the upstream of the primary separation equipment 5, the mixing box 7 and the secondary separation equipment 9, so that the sewage and excrement entering the primary separation equipment 5 has certain pressure, the flow speed of the sewage and excrement is increased compared with that of the prior art, the blockage of a subsequent pipeline is prevented, the promotion of the treatment process of the sewage and excrement is facilitated, and the treatment efficiency is improved; seventhly, the larger solid is separated in the first stage, and then the flocculant is added to differentiate the smaller dirt and the water so that the smaller dirt can be separated by the subsequent separation equipment more easily, so that the overall separation effect is better, and the efficiency is higher. In conclusion, the sewage and excrement treatment system has the advantages of simple structure, automatic sewage and excrement sucking, good stirring and sewage and excrement smashing effects, good flocculation effect, difficulty in pipeline blockage, simple overall structure, low cost, high efficiency and good treatment effect.

Specifically, in this embodiment, the first aeration device 4 is an aeration pipe, the inner diameter r of the aeration pipe is 20mm, two rows of air outlets 21 are arranged on the aeration pipe, which are symmetrical to the longitudinal central plane of the aeration pipe, and the longitudinal central plane arranged on the aeration pipe passes through the axial central line of the aeration pipe. All the air outlets 21 in each row of air outlets 21 are arranged in a direction parallel to the longitudinal central plane, the distance between every two adjacent air outlets 21 in each row of air outlets 21 is in the range of 20-50mm, and the distance between every two adjacent air outlets 21 refers to the distance between the axial central lines of every two air outlets 21, but does not refer to the minimum distance between the wall of each two air outlets 21. The included angle between each air outlet hole 21 and the longitudinal central plane is 45 degrees (shown as theta in the figure), namely the included angle between the axial central line of the air outlet hole 21 and the longitudinal central plane is 45 degrees, and the aperture of the air outlet hole 21 is in the range of 2-4.5 mm. Preferably, the distance between every two adjacent air outlet holes 21 in each row of air holes 21 is 50mm, and the aperture of each air outlet hole 21 is 4.2mm.

Further, in the present embodiment, the aeration tube as the first aeration means 4 is horizontally placed at the lower portion of the vacuum chamber, and the air outlet hole 21 thereof is directed toward the upper portion of the vacuum chamber. Thus, the shearing force formed by the aeration of the air outlet 21 directly acts on the sewage and the sewage is broken under the action of the shearing force.

In this embodiment, on the one hand, the internal diameter r of above-mentioned aeration pipe and the structure and the structural parameter of venthole 21 are favorable to increasing the shearing force in twinkling of an eye of aeration pipe, on the other hand, because the great filth in the dirty excrement is more easily in the lower part of vacuum chamber than less filth, set up the aeration pipe level in the lower part of vacuum chamber, and guarantee that the contained angle of venthole 21 and vertical mid-plane is 45 (theta as shown in the figure), make the shearing force that the venthole 21 of aeration pipe explodes in twinkling of an eye directly act on great filth like this, reduced and weakened the possibility of shearing effect because of the hindrance of sewage, and smash with higher speed, improve and smash efficiency.

Further, in this embodiment, the aeration pipe is a stainless steel pipe. The aeration pipe made of stainless steel can prevent the air outlet 21 from being blocked by rusting in the use process of the air outlet 21, so that the crushing effect of the aeration pipe and the service life of the aeration pipe are influenced. The type of the stainless steel pipe is any type of stainless steel pipe, but when the stainless steel pipe is in a feces environment, the aeration pipe is not rusted and the requirement of the aeration process on strength is met.

A first regulating valve 22 is arranged on a communication pipeline between the first aeration device 4 and the fan 10 and is used for controlling the aeration air quantity entering the first aeration device 4. In this embodiment, a pipeline communicating between the fan 10 and the first aeration device 4 is provided with a check valve, an electromagnetic valve and a ball valve in sequence, wherein the ball valve is used as the first adjusting valve 22 with adjustable opening degree to control the aeration air quantity of the first aeration device 4. The opening degree thereof may be manually adjusted, but of course, the first regulating valve 22 may also be electrically controlled. Besides, the first regulating valve 22 may be a pneumatic valve, an electromagnetic valve, or a manual butterfly valve. The blower 10 is a three-lobe roots blower.

In the present embodiment, the vacuum pump 3 is any vacuum pump known to those skilled in the art, and preferably, a positive displacement vacuum pump is used, which is a power machine that uses mechanical, physical and chemical means to pump air out of the container to obtain negative pressure. The vacuum pump 3 mainly comprises a pump body, wheels, blades, an end cover, a bearing cover, a coupling and the like.

Further, in this embodiment, the vacuum pump 3 is communicated with the vacuum chamber through a connecting pipe, and a valve is arranged on the connecting pipe; the inlet of the vacuum chamber is connected with a suction pipe, and a valve is arranged on the suction pipe; the outlet of the vacuum chamber is connected with a discharge pipe which is provided with a valve. The on-off of each pipeline is controlled by controlling valves on the connecting pipe, the suction pipe and the discharge pipe, so that the vacuum chamber sewage suction (the connecting pipe is communicated with the suction pipe and the discharge pipe is disconnected) and the vacuum chamber sewage discharge (the connecting pipe is disconnected with the suction pipe and the discharge pipe is communicated) are controlled, and therefore the vacuum chamber alternately sucks and discharges sewage. And, stop the aeration when the dirt suction state (connecting pipe and suction pipe switch on, discharge pipe cut off), make the first aeration apparatus 4 aerate to the vacuum chamber in the dirt discharge state at the moment (connecting pipe and suction pipe switch off, discharge pipe begin to switch on) of entering the dirt discharge state at the same time, therefore can understand, adopt the aeration apparatus to stir the efficiency broken is very high, need not to seal the dirt excrement in the vacuum chamber and adopt the independent breaking link to break, therefore has saved the treatment time. Meanwhile, the aeration pressure can push the sewage and excrement in the vacuum chamber to be discharged, so that the flow speed of the broken sewage and excrement is increased, and the pipeline blockage is reduced.

Specifically, in the present embodiment, two identical vacuum chambers (see the first vacuum chamber 1 and the second vacuum chamber 2 described below, but may be two vacuum chambers different in size and shape in other embodiments) are provided, and the two vacuum chambers are integrated in one vacuum chamber. The vacuum pump 3 is respectively communicated with the two vacuum chambers through a first connecting pipe 25 and a second connecting pipe 26, and a first valve 27 and a second valve 28 are respectively arranged on the first connecting pipe 25 and the second connecting pipe 26; the inlets of the two vacuum chambers are respectively connected with a first suction pipe 29 and a second suction pipe 30, and the first suction pipe 29 and the second suction pipe 30 are respectively provided with a third valve 31 and a fourth valve 32; the outlets of the two vacuum chambers are respectively connected with a first discharge pipe 33 and a second discharge pipe, and a fifth valve 35 and a sixth valve 36 are respectively arranged on the first discharge pipe 33 and the second discharge pipe 34; a controller 37 is further provided, and the controller 37 is in communication connection with the first valve 27, the second valve 28, the third valve 31, the fourth valve 32, the fifth valve 35 and the sixth valve 36 so as to control the opening and closing of the valves to enable the two vacuum chambers to alternately suck and discharge sewage, and when one vacuum chamber is in a sewage suction state, the other vacuum chamber is in a sewage discharge state.

Wherein, the two ends of the first connecting pipe 25 are respectively communicated with the vacuum pump 3 and the first vacuum chamber 1, the first valve 27 is arranged on the first connecting pipe 25, the first valve 27 is used for opening and closing the first connecting pipe 25, the first connecting pipe 25 is matched with the first valve 27 in an open state, and the first valve is used for enabling the vacuum pump 3 to pump away the air in the first vacuum chamber 1, so that the internal air pressure of the first vacuum chamber 1 is smaller than the atmospheric pressure.

Wherein, both ends of the second connection pipe 26 are respectively communicated with the vacuum pump 3 and the second vacuum chamber 2, and the second valve 28 is arranged on the second connection pipe 26. The second valve 28 is used for opening and closing the second connection pipe 26, and the second connection pipe 26 is matched with the second valve 28 in an open state, so that the vacuum pump 3 pumps air inside the second vacuum chamber 2 away, and the internal air pressure of the second vacuum chamber 2 is made to be less than the atmospheric pressure.

Wherein the first suction pipe 29 is communicated with an inlet of the first vacuum chamber 1, the third valve 31 is provided on the first suction pipe 29, the third valve 31 is used for opening and closing the first suction pipe 29, the first suction pipe 29 is matched with the third valve 31 in an open state, and the excrement passes through the first suction pipe 29 and enters the first vacuum chamber 1 under the action of atmospheric pressure. The first suction duct 29 cooperates with a third valve 31 in the closed position for preventing the entry of manure into the first vacuum chamber 1.

Wherein the second suction pipe 30 communicates with the inlet of the second vacuum chamber 2, and the fourth valve 32 is provided on the second suction pipe 30. The fourth valve 32 is used to open and close the second suction tube 30. The second suction tube 30 cooperates with the fourth valve 32 in the open state, and the fecal waste is introduced into the second vacuum chamber 2 through the second suction tube 30 under the effect of atmospheric pressure. The second suction duct 30 cooperates with a fourth valve 32 in a closed state for preventing manure from entering the second vacuum chamber 2.

Wherein, the first exhaust pipe 33 is communicated with the outlet of the first vacuum chamber 1, the fifth valve 35 is arranged on the first exhaust pipe 33, and the fifth valve 35 is used for opening and closing the first exhaust pipe 33. When the fifth valve 35 opens the first discharge pipe 33, the first discharge pipe 33 is used for discharging the dirty manure in the first vacuum chamber 1; when the first discharge pipe 33 is closed by the fifth valve 35, the discharge of the soil is prevented.

Wherein the second discharge pipe 34 communicates with an outlet of the second vacuum chamber 2, a sixth valve 36 is provided on the second discharge pipe 34, and the sixth valve 36 is used to open and close the second discharge pipe 34. When the second discharge pipe 34 is opened by the sixth valve 36, the second discharge pipe 34 discharges the contaminated soil in the second vacuum chamber 2, and when the second discharge pipe 34 is closed by the sixth valve 36, the contaminated soil in the second vacuum chamber 2 is prevented from being discharged.

The controller 37 is in communication connection with the first valve 27, the second valve 28, the third valve 31, the fourth valve 32, the fifth valve 35, and the sixth valve 36 to control the on/off of the valves, so that the first vacuum chamber 1 and the second vacuum chamber 2 alternately suck and discharge sewage, and when the first vacuum chamber 1 is in a sewage suction state, the second vacuum chamber 2 is in a sewage discharge state, and when the second vacuum chamber 2 is in a sewage discharge state, the first vacuum chamber 1 is in a sewage suction state.

The controller 37 has signal sending ends for sending opening signals and closing signals to the six valves from the first valve to the sixth valve, the six valves from the first valve to the sixth valve have signal receiving ends for receiving the opening signals and the closing signals, and the signal sending ends of the controller 37 are in communication connection with the signal receiving ends of the valves. Of course, the controller 37 may also be communicatively coupled to other valves for electrical control.

To sum up, the process of the suction and discharge of the first vacuum chamber 1 is as follows: the controller 37 controls the first valve 27 to open, gradually vacuumizes the first vacuum chamber 1, opens the third valve 31 and, in cooperation with the first valve 27 and the first connection pipe 25 in the open state, sucks the soil to the first vacuum chamber 1 while maintaining the first vacuum chamber 1 at a low pressure. When a proper amount of the fecal sewage is in the first vacuum chamber 1, the first valve 27 and the third valve 31 are closed, and the fifth valve 35 is opened to discharge the fecal sewage in the first vacuum chamber 1.

The process of the suction and discharge of the second vacuum chamber 2 is as follows: the controller 37 controls the second valve 28 to open, gradually vacuuming the second vacuum chamber 2, opening the fourth valve 32 and sucking the soil to the first vacuum chamber 1 while maintaining the second vacuum chamber 2 at a low pressure in cooperation with the second valve 28 and the second connection pipe 26 in the open state. When the second vacuum chamber 2 has a proper amount of excrement, the second valve 28 and the fourth valve 32 are closed, and the sixth valve 36 is opened to discharge the excrement in the second vacuum chamber 2.

The process of alternately sucking and discharging sewage in the first vacuum chamber 1 and the second vacuum chamber 2 comprises the following steps: the controller 37 controls the first valve 27 and the second valve 28 to be alternately opened, i.e., the first vacuum chamber 1 and the second vacuum chamber 2 are alternately evacuated. And controlling the third valve 31 and the fourth valve 32 to be opened alternately, namely, the first vacuum chamber 1 and the second vacuum chamber 2 are used for sucking the sewage alternately. And controlling the fifth valve 35 and the sixth valve 36 to be opened alternately, namely, the first vacuum chamber 1 and the second vacuum chamber 2 are drained alternately. And when the first valve 27 and the third valve 31 are opened, the second valve 28 and the fourth valve 32 are closed, so that the first vacuum chamber 1 is in a dirt sucking state, and the second vacuum chamber 2 is in a dirt discharging state, otherwise, when the first valve 27 and the third valve 31 are closed, the second valve 28 and the fourth valve 32 are opened, so that the first vacuum chamber 1 is in a dirt discharging state, and the second vacuum chamber 2 is in a dirt sucking state,

in addition, the first discharge pipe 33 is located at the lower part of the first vacuum chamber 1, which is beneficial for the smooth discharge of the dirty manure in the first vacuum chamber 1 through the first discharge pipe 33 under the action of gravity, and the second discharge pipe 34 is located at the lower part of the second vacuum chamber 2, which is beneficial for the smooth discharge of the dirty manure in the second vacuum chamber 2 through the second discharge pipe 34 under the action of gravity.

In conclusion, the first vacuum chamber 1 and the second vacuum chamber 2 work alternately without stopping or reversing the vacuum pump 3, and the sewage suction and discharge efficiency is improved. In addition, through control of controller 37, soil pick-up blowdown is more reliable, through the communication connection, can realize remote control.

Further, in the present embodiment, a first liquid level sensor 38 is provided in the first vacuum chamber 1; a second liquid level sensor 39 is arranged in the second vacuum chamber 2; the first level sensor 38 and the second level sensor 39 are communicatively connected to the controller 37. The first liquid level sensor 38 and the second liquid level sensor 39 are respectively used for detecting the amount of the excrement in the first vacuum chamber 1 and the second vacuum chamber 2, and sending a signal to the controller 37 when detecting the excrement, and the controller 37 controls the opening and closing of each valve after receiving the signal so as to exchange the sewage suction and discharge states of the two vacuum chambers.

Further, in this embodiment, the first aeration device 4 is disposed in both the first vacuum chamber 1 and the second vacuum chamber 2, and in summary, when the sewage discharge state is entered (i.e. the fifth valve 35/the sixth valve 36 is opened), the first aeration device 4 aerates the vacuum chamber in the sewage discharge state, and because the efficiency of stirring and breaking by using the aeration device is high, the sewage manure does not need to be enclosed in the vacuum chamber and broken by using an independent breaking link, so the processing time is saved. Meanwhile, the aeration pressure can push the sewage and excrement in the vacuum chamber to be discharged, so that the flow speed of the broken sewage and excrement is increased, and the pipeline blockage is reduced.

Specifically, in the present embodiment, the outlets of the two vacuum chambers are hermetically connected to the inlet of the primary separation device 5 through a pipeline (including the first discharge pipe 33 and the second discharge pipe 34, and possibly a main pipe communicating with the first discharge pipe 33 and the second discharge pipe 34 at the same time) to convey the broken excrement with air pressure.

Specifically, in this embodiment, the primary separation device 5 is a rotary filter screen cylinder, the rotary filter screen cylinder comprises a drum 12 and a filter screen 13 covering the periphery of the drum 12, the wall of the drum 12 is provided with screen holes, and the rotary filter screen cylinder is used for receiving smashed excrement and separating out larger sewage and sewage containing smaller sewage. The large contaminants are contaminants which are not passed through the screen holes of the drum 12 and the screen 13 and are retained inside the drum 12, and the small contaminants are contaminants which flow outside the screen 13 along with the sewage through the screen holes of the drum 12 and the screen 13 of the rotary screen drum. The inside of the wall of the drum 12 is provided with a plurality of arc-shaped blades 40 that form a spiral discharge path when the drum 12 rotates. From this, above-mentioned a plurality of arc blade 40 are rotatory along with rotatory filter screen cylinder, form a spiral discharge passage, and this spiral discharge passage can make the great filth in the dirty excrement along spiral discharge passage automatic discharge when rotatory filter screen cylinder is rotatory, has saved the step of artifical clearance, uses manpower sparingly, raises the efficiency, reduce cost.

Specifically, the plurality of arc-shaped blades 40 are arranged at regular intervals along a spiral trajectory (which is virtually present). In the present embodiment, six arc-shaped blades 40 are provided. And, a plurality of arc-shaped blades 40 are fixedly connected to the inner wall (i.e., the inner side of the cylinder wall) of the drum 12. Preferably, the width of the widest part of the arc-shaped blade 40 is in the range of 2-4cm, wherein, in combination with the attached drawings, the arc-shaped blade 40 has two arc-shaped edges, the widest distance between the two arc-shaped edges is the widest part, and the shape of the arc-shaped blade 40 can also be understood as a crescent. Further, a motor 41 and a transmission device 42 are further provided, the transmission device 42 is connected with the motor 41 and the drum 12, and transmits the rotation of the motor 41 to the drum 12 to drive the drum 12 to rotate, and further drive the whole rotary filter screen cylinder to rotate. It will be appreciated that the rotary screen cylinder has an inlet end at one end and an outlet end at the other end, with the spiral discharge channels extending between the inlet and outlet ends.

Further, 4 rolling supporting seats 14 which are arranged in a rectangular shape are further arranged, each rolling supporting seat 14 comprises a base 15 and a roller shaft 16 which is rotatably supported on the base 15, shaft bushings 18 are arranged at two ends of each rotary filter screen cylinder, and the rotary filter screen cylinders are rotatably supported on the roller shafts 16 of the rolling supporting seats 14 through the two shaft bushings 18. Wherein, 4 bases 15 of 4 roll supporting seats 14 are rectangle fixed mounting in installation face, and a roller 16 is installed on 4 bases 15 respectively in the cooperation. The roller shafts 16 support the rotary filter drum during rotation, and the mounting positions of the roller shafts 16 are required to ensure that the rotary filter drum does not contact the mounting surface of the rolling support base 14 or cause other undesirable effects, such as severe vibration, during rotation.

Of course, the invention is not limited thereto, and in other embodiments the rotatable mounting of the rotary screen cylinder may also be achieved in other ways known to the person skilled in the art, for example by the cooperation of a bearing and a bearing block.

Further, a first positioning mechanism 17 is arranged on the roll shaft 16, a second positioning mechanism 19 is arranged on the shaft bushing 18, and the first positioning mechanism 17 and the second positioning mechanism 19 are matched to limit the rotating filter screen cylinder in the axial direction. Therefore, the rotary filter screen cylinder is matched with the rolling support seat 14 and the shaft bushing 18, the rotary filter screen cylinder is ensured to be positioned axially, and rotate freely in the circumferential direction, so that the rotary filter screen cylinder can rotate, the axial fixation of the rotary filter screen cylinder in the rotating process is realized, and the structure is simple.

Specifically, in the present embodiment, the first positioning mechanism 17 is an annular protrusion provided on the outer peripheral surface of the roller shaft 16, and the second positioning mechanism 19 is an annular groove provided on the outer peripheral surface of the bush housing 18. The annular projection and the annular groove form a male-female fit to limit axial movement of the rotary screen cylinder. The height of the annular projection is greater than the depth of the annular groove to prevent the rotating screen cylinder from rubbing against the bushing 18. Preferably, the height of the annular protrusion is within the range of 1.5-3cm, and the depth of the annular groove is within the range of 0.8-1.2cm, so that the numerical design ensures that the positioning is stable and the abrasion is small.

Of course, the present invention is not limited to this, and in other embodiments, on the premise that the first positioning mechanism 17 and the second positioning mechanism 19 are matched in a concave-convex manner, and the height of the annular protrusion is greater than the depth of the annular groove, the annular protrusion of the first positioning mechanism 17 may be changed into an annular groove, and the annular groove of the second positioning mechanism 19 may be changed into an annular protrusion.

Further, in the present embodiment, the drum 12 of the rotary screen cylinder is cylindrical, the screen holes on the drum 12 are bar-shaped screen holes, all the bar-shaped screen holes are arranged at intervals along the circumferential direction of the drum 12, and the bar-shaped screen holes can be formed by punching. Of course, the drum 12 may be formed by welding two or more metal plates, and the gap between the metal plates may form a mesh. The purpose of the drum 12 is to constitute a rigid support for the rotating screen cylinder, ensuring that it does not deform during operation.

Further, in the present embodiment, the filter screen 13 is a cylindrical filter screen 13, the cylindrical filter screen 13 is sleeved outside the drum 12, and both the cylindrical filter screen 13 and the drum 12 are fixedly connected with the shaft bushing 18, so as to form a structure that the filter screen 13 covers the drum 12. The shape of the mesh of the screen 13 is any shape, preferably, the shape of the mesh of the screen 13 is rectangular, and the material of the screen 13 is stainless steel. The fixed connection between the screen 13 and the drum 12 and the shaft bushing 18 may be any fixed connection known to the person skilled in the art, such as welding, riveting, gluing.

Further, the screen mesh sizes of the screen 13 and the drum 12 are both 8mm. The mesh size of the screen 13 and the drum 12 refers to the maximum size of the material that the mesh will pass through.

Further, the inlet end of the rotary filter screen cylinder is provided with an air injection device, the air injection device is connected with the fan 10, and the injection direction of the air injection device faces the inside of the rotary filter screen cylinder and forms an included angle with the axis of the rotary filter screen cylinder, so that the cleaning of the dirt adhered to the rotary drum 12 and the filter screen 13 is facilitated. Wherein, the air injection device and the first aeration device 4 can share the same fan 10, and also can independently use one fan 10. Alternatively, the air flow between the air injector 46 and the fan 10 is regulated by a valve, which may be any valve known to those skilled in the art, such as a butterfly valve.

Specifically, in the present embodiment, the air injection device 46 is an air injection pipe, an end wall of the air injection pipe is provided with an air outlet, and an injection direction of the air injection pipe faces the inside of the rotary filter screen cylinder and forms an included angle with an axis of the rotary filter screen cylinder. The included angle is larger than 0 degree and smaller than 90 degrees, namely the gas spraying pipe is obliquely arranged relative to the inner wall of the roller 12, so that the dirt adhered to the inner wall of the roller 12 can fall off. Preferably, the jet direction of the gas jet tubes is at an angle of 45 ° to the axis of the rotating screen cylinder.

In addition, the air injection mode of the air injection pipe can be intermittent air injection, namely the air injection pipe is in an air injection state in part of time and is in a stop state in part of time in the working process of the rotary filter screen cylinder, and when the air injection pipe is in the air injection state, the air injection quantity of the air injection pipe can be adjusted through a valve.

In summary, in the embodiment, the smashed manure with an advancing speed enters the interior of the drum 12 of the rotary strainer cylinder, on one hand, the rotary strainer cylinder is driven by the motor 41 and the transmission device 42 to rotate at a constant speed, and the sewage in the manure drives small dirt to flow through the meshes of the drum 12 and the filter screen 13 from the interior of the drum 12 of the rotary strainer cylinder, enter the exterior of the filter screen 13 of the rotary strainer cylinder, and then enter the mixing box 7; on the other hand, the larger dirt in the dirt and excrement is retained in the drum 12 due to the size of the sieve holes of the drum 12 and the sieve 13 which are larger than the size of the sieve holes of the rotary filter screen cylinder, the plurality of arc-shaped blades 40 form a spiral discharge channel when rotating along with the rotary filter screen cylinder, the larger dirt retained in the drum 12 of the rotary filter screen cylinder has the self-contained advancing speed on one hand, and the peripheral speed provided by the spiral discharge channel formed by the rotation of the plurality of arc-shaped blades 40 on the other hand is provided for the larger dirt, and the larger dirt is automatically discharged along the spiral discharge channel under the driving of the advancing speed and the rotating speed, at the moment, the primary separation equipment completes the treatment task of the link, and separates the larger dirt from the sewage containing the smaller dirt. In this embodiment, the above-mentioned automatic in-process of discharging cylinder 12 of great filth, because the bonding characteristic of great filth self and the rotation effect of cylinder 12, very easy bonding is on the inner wall of cylinder 12, and simultaneously herein, the sewage that contains less filth is when the sieve mesh of cylinder 12 and the sieve mesh of filter screen 13, also very easy bonding is at the sieve mesh edge of cylinder 12 and filter screen 13, cause the jam of sieve mesh, based on the aforesaid, through setting up the air jet system 46 at the cylinder 12 entry end, utilize the gas that air jet system 46 blew out to blow off the great filth that bonds inside cylinder 12 and the less filth that bonds at the sieve mesh edge of cylinder 12 inner wall and filter screen 13, reach self-cleaning's effect, separation efficiency is improved, the manual cleaning step has been practiced thrift, and the cost is reduced.

The rotary filter screen cylinder adopted by the primary separation equipment can be understood as a rotary filter screen 13 grid structure, the structure greatly improves the sewage filtering precision and the processing capacity, the rotary filter screen cylinder has unique structure, works reliably, does not need to replace internal elements, is simple to operate and maintain, has long service life and low use cost, can realize automatic separation, and does not need manual cleaning.

Generally, the primary separation equipment has the advantage of automatically discharging large dirt and can automatically clean the rotary filter screen cylinder by matching with facilities, so that the separation efficiency is improved, and the cost is reduced.

In addition to the above structure, an end cover 43 may be fixedly disposed at the inlet end or the outlet end of the rotary screen cylinder, the end cover 43 may be fixed to the shaft bushing 18, and an inlet or an outlet is correspondingly formed on the end cover 43, the inlet is used for the sewage and the excrement to enter the inside of the rotary screen cylinder 12, and the outlet is used for the large sewage to be discharged from the inside of the rotary screen cylinder 12. A circle of external teeth 44 are arranged on the end cover 43, a gear 47 is sleeved on an extending shaft of the motor 41, and the external teeth 44 of the end cover 43 are connected with the gear 47 through a transmission chain 45. The end cap 43, the drive chain 45 and the gear 47 thus form a transmission 42, which transmits the rotation of the motor 41 to the drum 12 and the screen 13 via the shaft bushing 18. Of course, the transmission 42 is not limited to the above examples, but may be any transmission 42 known to those skilled in the art, such as a gear 47. Accordingly, the corresponding structure used in conjunction therewith should be adjusted accordingly.

On the other hand, the sewage containing smaller dirt separated by the primary separation equipment can be collected by a collection container arranged outside the rotary filter screen cylinder, wherein 4 rolling support seats 14, the whole rotary filter screen cylinder, the motor 41 and the transmission device 42 can be all arranged in the collection container, and of course, the sewage can also be partially arranged in the collection container, for example, only the rotary filter screen cylinder is arranged in the collection container, and 4 rolling support seats 14, the whole rotary filter screen cylinder, the motor 41 and the transmission device 42 can be all arranged outside the collection container.

Specifically, the sewage treatment system of the present embodiment further includes a third aeration device 20 provided in the flocculant dosing tank 6, and the third aeration device 20 is communicated with the fan 10. The flocculant is stirred by the exposed gas, the stirring effect is excellent, no other stirring device is required to be additionally arranged in the flocculant dosing tank 6, the integral structure for stirring the flocculant in the flocculant dosing tank 6 is simplified, and the cost is reduced; meanwhile, the first aeration device 4 arranged in the flocculating agent dosing box 6 can enable the flocculating agent dosing box 6 to have certain pressure, so that the flow velocity of the flocculating agent is increased, the pipeline blockage is reduced, and the discharge of the flocculating agent dosing box 6 is facilitated.

Specifically, the third aeration device 20 is an aeration pipe, the inner diameter r of the aeration pipe is 20mm, two rows of air outlet holes 21 are arranged on the aeration pipe and are symmetrical to the longitudinal central plane of the aeration pipe, and the longitudinal central plane arranged on the aeration pipe passes through the axial central line of the aeration pipe. All the air outlets 21 in each row of air outlets 21 are arranged in a direction parallel to the longitudinal central plane, the distance between every two adjacent air outlets 21 in each row of air outlets 21 is in the range of 20-50mm, and the distance between every two adjacent air outlets 21 refers to the distance between the axial central lines of every two air outlets 21, but does not refer to the minimum distance between the wall of each two air outlets 21. The angle between each of the outlet holes 21 and the longitudinal central plane is 45 degrees (shown as theta in the figure), namely the angle between the axial center line of the outlet hole 21 and the longitudinal central plane is 45 degrees, and the aperture of the outlet hole 21 is in the range of 2-4.5 mm. Preferably, the distance between every two adjacent air outlet holes 21 in each row of air holes 21 is 50mm, and the aperture of each air outlet hole 21 is 4.2mm.

Further, in the present embodiment, the aeration pipe as the third aeration apparatus 20 is horizontally placed at the lower portion of the flocculant dosing tank 6, and the air outlet hole 21 thereon is directed toward the upper portion of the flocculant dosing tank 6. The installation position is favorable for fully stirring the flocculating agent and preventing the flocculating agent from being solidified.

In this embodiment, on the one hand, the aforesaid is favorable to increasing the instantaneous effort of aeration pipe as the internal diameter r of aeration pipe and venthole 21 of third aeration equipment 20 and structural parameter, on the other hand, set up aeration pipe level in the lower part of flocculating agent dosing tank 6, and guarantee that the contained angle of venthole 21 and vertical central plane is 45 degrees, make the gaseous bottom from bottom to top effect the flocculating agent from flocculating agent dosing tank 6 of the venthole 21 that exposes in the twinkling of an eye of aeration pipe like this, avoid being in the flocculating agent that the bottom does not obtain thorough stirring, cause the flocculating agent to solidify, influence the subsequent flocculation of flocculating agent, lead to the sewage treatment effect to descend. Therefore, the stirring effect of the flocculating agent dosing equipment is better.

Further, in the present embodiment, the aeration pipe as the third aeration apparatus 20 is a pvc pipe. The aeration pipe adopting the pvc can prevent the air outlet 21 from being blocked by rusting in the use process, thereby influencing the stirring effect of the aeration pipe and the service life of the aeration pipe. The aeration pipe can be partially arranged in the flocculant dosing tank 6 or can be completely arranged in the flocculant dosing tank 6, but the aeration pipe ensures that the air outlet 21 is exposed in the flocculant dosing tank 6.

And a third regulating valve 24 is arranged on a communication pipeline between the third aeration device 20 and the fan 10 and is used for controlling the aeration air quantity entering the third aeration device 20. In this embodiment, a pipeline connecting the blower 10 and the third aeration device 20 is sequentially provided with a check valve, an electromagnetic valve and a ball valve, wherein the ball valve is used as a third regulating valve 24 with an adjustable opening degree to control the aeration size of the third aeration device 20, and the opening degree can be manually regulated. Of course, the opening-adjustable valve can also be electrically controlled. Besides, the valve with adjustable opening degree can also adopt a pneumatic knife valve, an electromagnetic valve and a manual butterfly valve.

Therefore, in the flocculant dosing tank 6, the stirring effect of the flocculant is effectively improved through the aeration device, and in actual use, the aeration quantity can be adjusted according to the actual content of the flocculant in the flocculant dosing tank 6, so that the energy-saving effect is achieved. And the flocculant dosing tank 6 has the advantages of simple structure, low cost, good stirring effect and difficult blockage of pipelines.

Further, in the present embodiment, the liquid outlet of the primary separating apparatus 5 and the outlet of the flocculant dosing tank 6 communicate with the inlet of the mixing tank 7 through the same line mixer 11. Specifically, a line mixer 11 communicates with an inlet of the mixing tank 7 for introducing sewage containing small contaminants into the mixing tank 7, and an outlet of the flocculant dosing tank 6 communicates with an inlet of the mixing tank 7 through the above line mixer 11. The pipeline mixer 11 is used for premixing the flocculating agent in the flocculating agent dosing tank 6 and the sewage containing small dirt, so that the flocculation reaction is more sufficient, the stirring time is shortened, the cost is saved, and the efficiency is improved. The pipeline mixer 11 has the characteristics of quick and efficient mixing, simple structure, energy consumption saving, small size and the like, under the condition of no need of external power, the sewage containing smaller pollutants can generate three functions of shunting, cross mixing and reverse rotational flow through the pipeline mixer 11, so that the added flocculating agent can be rapidly and uniformly diffused into the whole sewage containing the smaller pollutants, the purpose of instantaneous mixing is achieved, the mixing efficiency is up to 90-95%, the consumption of the flocculating agent can be saved by about 20-30%, and the pipeline mixer has great significance for improving the sewage treatment effect and saving energy.

Preferably, the pipeline mixer 11 is a static mixer, and the mixing process of the static mixer is performed by a series of mixing units of different specifications installed in the hollow pipeline. Due to the effect of the mixing unit, the sewage manure and the flocculating agent are rotated leftwards and rightwards occasionally, the flowing mixing direction is changed constantly, the central sewage manure and the flocculating agent are pushed to the periphery, and the peripheral sewage manure and the flocculating agent are pushed to the center, so that a good radial mixing effect is achieved. Meanwhile, the perfect radial circulation mixing action can ensure that the sewage and the flocculating agent are uniformly mixed. The static mixer is a high-efficiency mixing device without movement, and two or more strands of excrement and flocculating agent are cut, sheared, rotated and mixed again through the internal parts of the mixing units fixed in the pipe, so that the aims of good dispersion and full mixing of the excrement and the flocculating agent are fulfilled. The static mixer is characterized in that:

1. continuous process, the mixing process is not interrupted;

2. very little shear does not damage the mixture, such as: flocculating;

3. the mixing distance and the installation space are very small, and the static mixer is a part of the pipeline and can be regarded as a special pipeline, so that the defects of a traditional stirring tank and the like are avoided;

4. no moving parts, no abrasion and almost no maintenance cost;

5. the mass transfer efficiency is high, and the pressure drop and the energy consumption are very low;

6. will not be blocked and the mounting means and material may be of any shape, any size and any material.

Further, in this embodiment, the second aeration device 8 in the mixing tank 7 is an aeration pipe, the inner diameter r of the aeration pipe is 20mm, two rows of air outlets 21 are arranged on the aeration pipe, which are symmetrical to the longitudinal center plane of the aeration pipe, and the longitudinal center plane arranged on the aeration pipe passes through the axial center line of the aeration pipe. All the air outlets 21 in each row of air outlets 21 are arranged in a direction parallel to the longitudinal central plane, the distance between every two adjacent air outlets 21 in each row of air outlets 21 is in the range of 20-50mm, and the distance between every two adjacent air outlets 21 refers to the distance between the axial central lines of every two air outlets 21, but does not refer to the minimum distance between the hole walls of every two air outlets 21. Each of the outlet holes 21 is angled at 45 deg. (theta as shown in the drawing) to the longitudinal central plane, i.e. the angle of the space between the axial center line of the outlet hole 21 and the longitudinal central plane is 45 deg.. The aperture of the air outlet 21 is in the range of 2-4.5 mm. Preferably, the distance between every two adjacent air outlet holes 21 in each row of air holes 21 is 50mm, and the aperture of each air outlet hole 21 is 4.2mm.

An aeration pipe as the second aeration apparatus 8 is horizontally placed at the lower portion of the mixing tank 7, and an air outlet 21 thereof is directed toward the upper portion of the mixing tank 7. The installation position is beneficial to accelerating the flocculation reaction speed of the excrement and the flocculating agent, thereby accelerating the formation of flocculate.

In this embodiment, on the one hand, the internal diameter r of above-mentioned aeration pipe and the structure and the structural parameter of venthole 21 are favorable to increasing the instant effort of aeration pipe, on the other hand, set up the aeration pipe level in the lower part of mixing box 7, and guarantee that venthole 21 is 45 degrees with the contained angle of vertical central plane, make the gas that the venthole 21 of aeration pipe exposes to the sun in the twinkling of an eye act on dirty excrement from bottom to top of mixing box 7 like this, flocculating agent and flocculation thing, avoid being in the dirty excrement of below and not obtaining thorough stirring, cause dirty excrement and not fully react with the flocculating agent, lead to the sewage treatment effect to descend. Therefore, the flocculation effect is better.

Further, in the present embodiment, the aeration pipe as the second aeration apparatus 8 is a pvc pipe. The aeration pipe adopting the pvc can prevent the air outlet 21 from being blocked by rusting in the use process, thereby influencing the stirring effect of the aeration pipe and the service life of the aeration pipe. The aeration pipes may be partly or entirely arranged in the mixing tank 7, but it is ensured that the outlet openings 21 are exposed in the mixing tank 7.

Further, a second regulating valve 23 is positioned on a communication pipeline between the second aeration device 8 and the fan 10, and is used for controlling the aeration air quantity entering the second aeration device 8. In this embodiment, a check valve, an electromagnetic valve and a ball valve are sequentially disposed on a pipeline connecting the blower 10 and the aeration apparatus, wherein the ball valve is used as the second adjusting valve 23 with an adjustable opening degree, and the opening degree thereof can be manually adjusted, and of course, the valve with the adjustable opening degree can also be electrically controlled. Preferably, the first, second and

third regulating valves

22, 23 and 24 have opening degrees such that the air volume ratio of the air flows passing through the three is 1:2:1. more preferably, the aeration air volume in the vacuum chamber is 0.5m ³ Min, aeration pressure is 49kPa; the aeration air volume in the mixing tank 7 was 1m ³ Min, aeration pressure is 49kPa; the aeration air quantity in the flocculating agent dosing tank 6 is 0.5m ³ The aeration pressure is 49kPa during the reaction.

Further, the secondary separation equipment 9 is a stacked screw type sludge dewatering machine. Particularly, the stacked screw type sludge dewatering machine adopts a stacked screw extrusion mode, on one hand, solid-liquid separation is carried out on various excrement treated by flocculating agent, the problem of precipitation can be solved, the treatment capacity is enhanced, the construction area of a biochemical pool can be greatly reduced, meanwhile, the treated sewage does not block municipal pipelines, the three-level discharge standard of the sewage of the septic tank is reached, and the construction investment and the land use area of environment-friendly treatment are saved to the maximum extent. On the other hand, for various excrements, solid matters obtained by extrusion treatment are almost odorless, have small viscosity, automatically separate garbage and are convenient to treat. Compared with a stacked screw type mud-water separator, the horizontal screw type centrifuge has high mechanical requirement, higher energy consumption and investment cost and a rotating speed of more than 5000 r/min; the plate and frame filter press has small processing capacity and complex operation, and the filter cloth is easy to damage and block, and is generally only suitable for small sewage stations; the belt filter press also has the defects of large floor area, high energy consumption, large washing water quantity and the like. The stacked screw type sludge dewatering machine not only successfully overcomes the defects of the machines, but also has the advantages of small volume, light weight, small vibration, less noise, no pollution, continuous use, no need of personnel to stay on duty and the like.

The process of adopting the sewage treatment system to treat the sewage is as follows:

after entering a vacuum chamber, the sewage manure enters a primary separation device 5 through aeration stirring and smashing, the primary separation device 5 for the sewage manure rotates and filters along with a rotary filter screen cylinder, wherein large sewage is automatically discharged from the inside of a roller 12 of the rotary filter screen cylinder, sewage containing small sewage enters the outside of a filter screen 13 of the rotary filter screen cylinder from the inside of the roller 12 of the rotary filter screen cylinder through screen holes of the roller 12 and the filter screen 13, the sewage containing small sewage outside the filter screen 13 of the rotary filter screen cylinder is collected (a collecting container such as a collecting tank can be adopted) and then flows into a mixing box 7, the mixing box 7 also receives a flocculating agent from a flocculating agent feeding box 6, the flocculating agent and the sewage containing small sewage are flocculated in the mixing box 7 to form flocculate, the formed flocculate and sewage flow into a secondary separation device 9 from an outlet of the mixing box 7, and the secondary separation device 9 receives the sewage containing flocculate from the mixing box 74 and separates the sewage into sewage and solid dried sewage.

Further, the excrement treatment system of this embodiment can integrate on a dirty dung-cart, and this dirty dung-cart adds and is equipped with four pneumatic jack for supplementary automobile body is stable. The carriage of the sewage truck mainly comprises a box body and a lower skirt edge, the overall dimension (length, width and height) of the box body is 4200, 2060, 2200mm, the overall design of the box body adopts a framework skin structure and consists of a box body framework, a bottom plate and inner and outer skins, wherein a heat insulation layer is added between the inner and outer skins, so that the mobile sewage truck can adapt to different climatic environments. The box body framework is welded by adopting a rectangular pipe. The longitudinal and transverse beams of the underframe are all formed by bending steel plates, are assembled and welded into a net-shaped underframe, are reserved with equipment mounting beams and reinforcing plates, are subjected to rust removal and corrosion prevention after welding, and are coated with antirust primer and finish paint after phosphorization. The stainless steel plate with the thickness of 4mm is laid on the surface of the bottom plate, so that the equipment is convenient to clean and maintain, and the appearance is attractive. The outer skin is made of a stainless steel plate with the thickness of 1 mm. The inner skin adopts an aluminum checkered plate with the thickness of 1.5mm, and polystyrene foam is filled in the inner skin. Two sides of the box body are respectively provided with 4 stainless steel doors, and the rear part is provided with an upturning door. The roof is equipped with 3 sets of skylights for operation maintenance and equipment overhaul. And LED screens can be additionally arranged on the two sides.

In addition, for the comprehensive properties that improves the excrement processing system of this embodiment, this excrement processing system supplies power can adopt two kinds of power supply modes of municipal power consumption power supply and spontaneous electricity to three-phase electricity is main power, is equipped with generating set in order to solve the condition that does not have three-phase electricity simultaneously. The two power supply modes can realize interlocking and have the functions of phase sequence protection and overload protection. The power generator of the excrement treatment system in the embodiment adopts a mute diesel engine set to generate power with 22 kilowatts, namely, the power generation is carried out at most 22 degrees per hour. The generator is turned on at a higher power level than is required to generate electricity, and after starting, is generally lower than the required power level. 1 liter diesel generates 4 degrees electricity, and the oil consumption is calculated according to the needed electricity. The self-provided generator of the sewage and excrement treatment system has the advantages of good sealing performance, excellent performance, compact structure, small size, light weight, high reliability and the like, particularly has a waterproof function, and greatly improves the adaptability of the whole vehicle to the running and operating environment.

In addition, preferably, for power-saving arrangement, the liquid outlet of the rotary screen drum primary separation device 5 and the outlet of the flocculant dosing tank 6 are both higher than the inlet of the pipeline mixer 11, the outlet of the pipeline mixer 11 is higher than the inlet of the mixing tank 7, and the outlet of the mixing tank 7 is higher than the inlet of the secondary separation device 9, so that the fluid can be conveyed by means of the self-gravity.

In conclusion, the development of the urban civilization is restricted by the slow development of the environmental protection industry, and the sewage and excrement treatment system of the embodiment is used for the environmental protection industry, meets the requirements of the environmental protection industry on improving the efficiency of environmental protection equipment, improving the current situation of serious secondary pollution and meeting the requirements of harmless, quantitative reduction and resource treatment of garbage. Above-mentioned dirty excrement processing system collects a plurality of equipment systems as an organic whole such as solid-liquid separation, liquid medicine stirring, perfect integration various excrement and urine, mud, multiple functions such as sewage treatment, but the cyclic utilization of sewage of separating to can reduce BOD, COB's content in the sewage to a certain extent, can continuous operation moreover, have use cost low, benefit height, efficient, environmental protection, energy-conservation, cost advantage such as lower.

The great filth and the mummification solid filth after the sewage treatment system of this embodiment handles can directly regard as the fertilizer to use or as the raw materials of fertilizer, sell the fertilizer that adopts above-mentioned raw materials direct or indirect to make, can obtain extra economic benefits. The organic fertilizer can be used in many fields, for example, the organic fertilizer can be used for fertilizing fruit trees and forest trees; can be a superior 'tonic' for a vegetable garden and a flower nursery; can be excellent nutrients for hatched bamboo shoots; can be used as feed for chicken, duck and fish.

The sewage obtained after the treatment of the excrement treatment system of the embodiment can generate methane through anaerobic treatment and can be used as fuel or power generation energy, and the methane generated by the sewage does not contain solid residues basically and is not easy to cause blockage of the methane tank, so that the service life of the methane tank is prolonged. On the other hand, the sewage that the sewage treatment system of this embodiment obtained after handling need not ferment and can directly regard as organic fertilizer to use, and above-mentioned fertilizer has the permeability good, and the advantage of crop easy absorption is carried with above-mentioned fertilizer packing formula, has stopped the use of harmful chemical fertilizer and pesticide, forms benign ecological cycle, and above-mentioned fertilizer also can be used to the nutrient of big-arch shelter planting.

The excrement treatment system of this embodiment has the practicality: the solid-liquid separation speed of each device of the excrement treatment system is high, the water content of the separated dried solid sewage is 60-80%, the slag output and the water content can be adjusted by adjusting the parameters of each device, the excrement treatment system is suitable for feeds (such as grass and concentrated feeds) with different components, the transportation is convenient, and solid particles of the excrement treatment system are very suitable for being used as raw materials of fish feeds, organic fertilizers and the like.

The fecal sewage treatment system of the present embodiment has durability: the drum 12 and the screen 13 of the rotary screen cylinder, as well as the body, are all made of stainless steel and are more durable than other similar machines.

The manure treatment system of the embodiment has the following economical efficiency: all equipment of the sewage treatment system is simple and convenient to operate, and only a municipal 380V three-phase power or diesel generator is needed.

The excrement treatment system of this embodiment has the advance: the excrement treatment system is completely integrated with various excrement treatments and has the advantages of strong dirt-removing power, no blockage, convenient cleaning, low cost, high income and the like.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A fecal treatment system, comprising:

a vacuum chamber;

a vacuum pump (3), the vacuum pump (3) being connected with the vacuum chamber and being capable of creating a negative pressure in the vacuum chamber to suck the fecal waste into the vacuum chamber;

the first aeration device (4), the first aeration device (4) is positioned in the vacuum chamber and can stir and break the sewage and excrement;

the primary separation equipment (5) is hermetically connected with the vacuum chamber through a pipeline, and can receive the smashed sewage and manure with air pressure and separate larger sewage and sewage containing smaller sewage;

the flocculant dosing box (6), the flocculant dosing box (6) is used for storing a flocculant;

a mixing tank (7), said mixing tank (7) being in communication with said primary separation apparatus (5) and said flocculant dosing tank (6) to be capable of receiving sewage containing smaller contaminants and flocculant and for both forming floes therein;

a second aeration device (8), said second aeration device (8) being arranged in said mixing tank (7) to perform stirring;

a secondary separation device (9), said secondary separation device (9) being in communication with said mixing tank (7) to be able to receive the sewage with flocs and separate it and dry the solid contaminants; and

a fan (10), said fan (10) being in communication with said first aeration device (4) and said second aeration device (8);

the first aeration device (4) is an aeration pipe, the inner diameter of the aeration pipe is 20mm, two rows of air outlet holes (21) which are symmetrical to the longitudinal central plane of the aeration pipe are arranged on the aeration pipe, all the air outlet holes (21) in each row of the air outlet holes (21) are arranged in the direction parallel to the longitudinal central plane, the distance between every two adjacent air outlet holes (21) in each row of the air outlet holes (21) is within the range of 20-50mm, the included angle between each air outlet hole (21) and the longitudinal central plane is 45 degrees, and the aperture of each air outlet hole (21) is within the range of 2-4.5 mm;

the first aeration device (4) is horizontally placed at the lower part of the vacuum chamber, and the air outlet hole (21) on the first aeration device faces to the upper part of the vacuum chamber.

2. A fecal treatment system according to claim 1,

the liquid outlet of the primary separation equipment (5) and the outlet of the flocculant dosing box (6) are communicated with the inlet of the mixing box (7) through the same pipeline mixer (11).

3. A manure treatment system according to claim 1 wherein,

the primary separation equipment (5) is a rotary filter screen cylinder, the rotary filter screen cylinder comprises a rotary drum (12) and a filter screen (13) covered on the periphery of the rotary drum (12), the wall of the rotary drum (12) is provided with screen holes, the inner side of the wall of the rotary drum is provided with a plurality of arc-shaped blades (40) which form a spiral discharge channel when the rotary drum (12) rotates, and the arc-shaped blades (40) are uniformly arranged at intervals along a spiral track;

the secondary separation equipment (9) is a stacked screw type sludge dewatering machine.

4. A fecal treatment system according to claim 3, further comprising:

4 roll supporting seat (14) that are the rectangle and arrange, roll supporting seat (14) include base (15) and rotationally support roller (16) on base (15), be equipped with first positioning mechanism (17) on roller (16), the both ends of rotatory filter screen section of thick bamboo are equipped with bushing sleeve (18), rotatory filter screen section of thick bamboo is through two bushing sleeve (18) rotationally supports on roll roller (16) of supporting seat (14), be equipped with second positioning mechanism (19) on bushing sleeve (18), first positioning mechanism (17) with second positioning mechanism (19) cooperation constitution is right rotatory filter screen section of thick bamboo is spacing in its axial.

5. A manure treatment system according to claim 3 wherein,

the inlet end of the rotary filter screen cylinder is provided with an air injection device (46), the air injection device (46) is connected with the fan (10), and the injection direction of the air injection device (46) faces to the inside of the rotary filter screen cylinder and the axis of the rotary filter screen cylinder is an included angle.

6. A fecal treatment system according to claim 1, further comprising:

a third aeration device (20) arranged in the flocculant dosing tank (6), wherein the third aeration device (20) is communicated with the fan (10).

7. A manure treatment system according to claim 6 wherein,

the second aeration device (8) and the third aeration device (20) are aeration pipes, the inner diameter of each aeration pipe is 20mm, two rows of air outlet holes (21) symmetrical to the longitudinal central plane of each aeration pipe are arranged on each aeration pipe, all the air outlet holes (21) in each row of the air outlet holes (21) are arranged in the direction parallel to the longitudinal central plane, the distance between every two adjacent air outlet holes (21) in each row of the air outlet holes (21) is within the range of 20-50mm, the included angle between each air outlet hole (21) and the longitudinal central plane is 45 degrees, and the aperture of each air outlet hole (21) is within the range of 2-4.5 mm;

the second aeration device (8) is horizontally arranged at the lower part of the mixing box (7), and an air outlet hole (21) on the second aeration device faces to the upper part of the mixing box (7);

the third aeration device (20) is horizontally arranged at the lower part of the flocculant feeding box (6), and an air outlet (21) on the third aeration device faces the upper part of the flocculant feeding box (6).

8. A fecal treatment system according to claim 6 or 7, further comprising:

a first regulating valve (22) located on a communication pipeline between the first aeration apparatus (4) and the fan (10) and used for controlling aeration air volume entering the first aeration apparatus (4), a second regulating valve (23) located on a communication pipeline between the second aeration apparatus (8) and the fan (10) and used for controlling aeration air volume entering the second aeration apparatus (8), and a third regulating valve (24) located on a communication pipeline between the third aeration apparatus (20) and the fan (10) and used for controlling aeration air volume entering the third aeration apparatus (20), wherein the first regulating valve (22), the second regulating valve (23) and the third regulating valve (24) have opening degrees such that the air volume ratio of air flows passing through the three is 1:2:1.

9. a fecal treatment system according to claim 5,

two vacuum chambers are arranged, the vacuum pump (3) is respectively communicated with the two vacuum chambers through a first connecting pipe (25) and a second connecting pipe (26), and a first valve (27) and a second valve (28) are respectively arranged on the first connecting pipe (25) and the second connecting pipe (26);

the inlets of the two vacuum chambers are respectively connected with a first suction pipe (29) and a second suction pipe (30) which are respectively provided with a third valve (31) and a fourth valve (32);

the outlets of the two vacuum chambers are respectively connected with a first discharge pipe (33) and a second discharge pipe (34), and a fifth valve (35) and a sixth valve (36) are respectively arranged on the first discharge pipe (33) and the second discharge pipe (34);

the device is also provided with a controller (37), and the controller (37) is in communication connection with the first valve (27), the second valve (28), the third valve (31), the fourth valve (32), the fifth valve (35) and the sixth valve (36) so that the two vacuum chambers can alternately suck and discharge sewage by controlling the opening and closing of the valves, and when one vacuum chamber is in a sewage suction state, the other vacuum chamber is in a sewage discharge state.