CN217838499U - Rural sewage treatment plant - Google Patents

Abstract

The utility model discloses a rural sewage treatment plant, including box, case lid, water inlet, outlet, broken mechanism, anaerobism rabbling mechanism, aeration rabbling mechanism, backward flow mechanism and rotary driving mechanism. Sewage advanced goes into broken storehouse, it is high-speed rotatory by the broken axle of air motor drive, paper in the broken storehouse sewage of broken blade, the plastic bag, the impurity of floc etc. easy jam carries out the breakage, impurity after the breakage can get into the anaerobism intracavity by the filter screen, avoid blockking up, in the anaerobism chamber, the (mixing) shaft drives stirring leaf low-speed stirring anaerobism chamber, avoid depositing the accumulation and do not participate in the reaction bottom the anaerobism chamber, it improves sewage anaerobism purifying effect and improves anaerobism purifying effect, in good oxygen chamber, rotate when the hollow shaft ventilates, it is rotatory to drive aeration pipe and aeration head, the aeration head transmits the oxygen in the air to aquatic, provide oxygen for good oxygen microorganism of good oxygen intracavity, the sewage of good oxygen intracavity stirs simultaneously, improve the good oxygen purifying effect of sewage.

Description

Rural sewage treatment plant

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to a rural sewage treatment device.

Background

In rural areas and other areas where underground drainage systems are not available, a buried or semi-buried domestic sewage treatment device is often used for facilitating daily life of people, and convenience is brought to the life of residents under the condition that the land is not occupied. The rural sewage treatment device can treat various domestic sewage which is daily produced by residents, including kitchen sewage, laundry sewage, bathing sewage, toilet flushing sewage and the like.

The publication number is CN 213680298U's patent discloses a rural sewage treatment plant of formula of burying integratedly, including handling case, first treatment chamber, second treatment chamber and third treatment chamber, the excrement pipe has been installed in the top outside of handling the case, and the left end inboard of handling the case is provided with first treatment chamber, the right side of first treatment chamber is provided with the second treatment chamber, and the right side of second treatment chamber is provided with the third treatment chamber, install the baffle between first treatment chamber and the second treatment chamber, and the middle part inboard of baffle is connected with the grid, the top of baffle is connected with the bleeder line, the upper cover is installed to the top of handling the case, the installation lid is installed on the top of blowdown section of thick bamboo, the lower surface of installation lid is connected with the sealing washer.

When the sewage treatment device is used, domestic sewage, excrement and the like are discharged into the treatment box through the excrement passing pipe, and the domestic sewage and the excrement discharged into the treatment box are fully fermented under the action of the first treatment chamber of the anoxic biological reaction tank body, the second treatment chamber of the anaerobic biological reaction tank body and the third treatment chamber of the aerobic biological reaction tank body. The sewage treatment device at least has the following improvements:

1. the first treatment chamber is easy to block due to more impurities in the domestic sewage, and needs to be cleaned frequently, so that inconvenience is brought to a user;

2. the third treatment chamber is an aerobic biological reaction area, and an aeration device for supplying oxygen to the aerobic organisms is lacked, so that the activity of the aerobic organisms is reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a rural sewage treatment device to solve the above technical problems.

In order to achieve the above purpose, the utility model provides a rural sewage treatment plant, include:

the inner cavity of the box body is divided into an anaerobic cavity, an aerobic cavity and a water outlet cavity by a partition plate;

the box cover is arranged at the top of the box body and used for covering the box body;

the water inlet is fixedly connected with one side of the upper part of the box body and is communicated with the anaerobic cavity;

the water outlet is fixedly connected with the other side of the upper part of the box body and is communicated with the water outlet cavity;

the crushing mechanism comprises a crushing bin, a crushing shaft and a crushing blade, wherein the crushing bin is arranged in the anaerobic cavity and is communicated with the water inlet;

the anaerobic stirring mechanism comprises a stirring shaft and stirring blades, the stirring shaft is rotatably arranged in the anaerobic cavity, and the stirring blades are fixedly arranged on the stirring shaft and positioned at the bottom of the anaerobic cavity;

the aeration stirring mechanism comprises a hollow shaft, aeration pipes and aeration heads, the hollow shaft is rotatably arranged in the aerobic cavity, the aeration pipes are fixedly arranged at the bottom of the hollow shaft and are communicated with the hollow shaft, the aeration pipes are provided with a plurality of aeration heads, and the aeration heads are positioned at the bottom of the aerobic cavity;

the reflux mechanism comprises a gas stripping pump and a reflux pipe, the gas stripping pump is arranged in the water outlet cavity, one end of the reflux pipe is communicated with the output end of the gas stripping pump, and the other end of the reflux pipe extends to the bottom of the anaerobic cavity;

and the rotary driving mechanism is in transmission connection with the crushing shaft, the stirring shaft and the hollow shaft and drives the crushing shaft, the stirring shaft and the hollow shaft to rotate.

Preferably, the rotary driving mechanism comprises a waterproof shell, a pneumatic motor, a worm wheel, a rotary joint and a belt transmission assembly are arranged in the waterproof shell, the pneumatic motor is fixedly installed in the waterproof shell, the worm is rotatably installed in the waterproof shell, an output shaft of the pneumatic motor is connected with the worm through a coupler, a first bevel gear is installed at the other end of the worm, the upper end of a crushing shaft extends into the waterproof shell and is provided with a second bevel gear, the first bevel gear is meshed with the second bevel gear, the upper end of a stirring shaft extends into the waterproof shell and is provided with the worm wheel, the worm wheel is meshed with the worm, the upper end of a hollow shaft extends into the waterproof shell and is connected with the output end of the rotary joint, a first air inlet pipe is installed at the air inlet end of the pneumatic motor, an exhaust pipe is installed at the air outlet end of the pneumatic motor, the other end of the exhaust pipe is connected with the input end of the rotary joint, and the stirring shaft is in transmission connection with the hollow shaft through the belt transmission assembly.

Preferably, a second air inlet pipe is installed at the air inlet end of the air stripping pump, the second air inlet pipe and the first air inlet pipe are communicated with an air source through a tee joint, a first valve is installed on the first air inlet pipe, and a second valve is installed on the second air inlet pipe.

Preferably, the anaerobic cavity is communicated with the aerobic cavity through a first drainage tube, the upper end of the first drainage tube is communicated with the upper part of the anaerobic cavity, and the lower end of the first drainage tube is communicated with the lower part of the aerobic cavity.

Preferably, the aerobic cavity is communicated with the water outlet cavity through a second drainage tube, the upper end of the second drainage tube is communicated with the upper part of the aerobic cavity, and the lower end of the second drainage tube is communicated with the lower part of the water outlet cavity.

Preferably, a first filler is arranged in the anaerobic cavity, and a second filler is arranged in the aerobic cavity.

Preferably, the air lift pump is located at the bottom of the water outlet cavity, the return pipe is provided with a water pumping pipe communicated with the return pipe, and the water pumping pipe is provided with a third valve.

Preferably, a liquid level meter is installed in the water outlet cavity.

Compared with the prior art, the technical scheme has the following beneficial effects:

1. sewage firstly enters a crushing bin, after a high-pressure air source is connected, a pneumatic motor drives a worm to rotate, then a crushing shaft is driven to rotate at a high speed, crushing blades crush easily blocked impurities such as paper, plastic bags, floccules and the like in the sewage in the crushing bin, and the crushed impurities can enter an anaerobic cavity through a filter screen to avoid blockage;

2. in the anaerobic cavity, the worm drives the worm gear and the stirring shaft to rotate at a low speed, and the stirring blade stirs the anaerobic cavity at a low speed, so that precipitates are prevented from accumulating at the bottom of the anaerobic cavity and not participating in reaction, the anaerobic purification effect of sewage is improved, and the anaerobic purification effect is improved;

3. in the aerobic cavity, the hollow shaft rotates while ventilating to drive the aeration pipe and the aeration head to rotate, air is introduced into the aeration pipe and the aeration head, the aeration head transmits oxygen in the air into water to provide oxygen for aerobic microorganisms in the aerobic cavity, the aeration pipe and the aeration head rotate to stir sewage in the aerobic cavity, sediment accumulation at the bottom of the aerobic cavity is avoided, the sediment accumulation does not participate in reaction, and the aerobic purification effect of the sewage is improved;

4. sewage in the aerobic cavity enters the lower part of the water outlet cavity through the second drainage tube, sediment in the sewage falls to the bottom of the water outlet cavity under the action of gravity, and the air stripping pump pumps the water and the sediment at the bottom of the water outlet cavity into the return pipe and the anaerobic tank in sequence, so that the nitrification-denitrification reaction is facilitated, and the denitrification efficiency is improved;

5. this device is convenient for when clearing up, through the drinking-water pipe with this device is connected to outside suction pump, closes first valve and second valve, forms the negative pressure in the drinking-water pipe, deposits through the water and the bottom of back flow suction anaerobism intracavity, deposits through the water and the bottom of air-lift pump suction outlet intracavity.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

in the figure, 1, a box body; 2. a partition plate; 3. an anaerobic chamber; 4. an aerobic cavity; 5. a water outlet cavity; 6. a box cover; 7. a water inlet; 8. a water outlet; 9. a crushing bin; 10. a crushing shaft; 11. crushing the blade; 12. filtering with a screen; 13. a stirring shaft; 14. stirring blades; 15. a hollow shaft; 16. an aeration pipe; 17. an aeration head; 18. a gas stripping pump; 19. a return pipe; 20. a waterproof shell; 21. a pneumatic motor; 22. a worm; 23. a worm gear; 24. a rotary joint; 25. a belt drive assembly; 26. a first bevel gear; 27. a second bevel gear; 28. a first intake pipe; 29. an exhaust pipe; 30. a second intake pipe; 31. a tee joint; 32. a first valve; 33. a second valve; 34. a first draft tube; 35. a second draft tube; 36. a first filler; 37. a second filler; 38. a water pumping pipe; 39. a third valve; 40. a liquid level meter.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1, in an embodiment of the present invention, a rural sewage treatment plant includes: the device comprises a box body 1, a box cover 6, a water inlet 7, a water outlet 8 crushing mechanism, an anaerobic stirring mechanism, an aeration stirring mechanism, a backflow mechanism and a rotary driving mechanism;

wherein the inner cavity of the box body 1 is divided into an anaerobic cavity 3, an aerobic cavity 4 and a water outlet cavity 5 by a clapboard 2; a first filler 36 is arranged in the anaerobic cavity 3, and the first filler 36 is an MBBR filler to provide an environment suitable for growth of anaerobic microorganisms; a second filler 37 is arranged in the aerobic cavity 4, and the second filler 37 is an MBBR filler, so that an environment suitable for growth is provided for aerobic microorganisms;

the box cover 6 is arranged at the top of the box body 1 and is used for covering the box body 1; the box cover 6 is detachably connected with the box body 1 in a clamping mode or a bolt connection mode, and a manhole is arranged at the top of the box cover 6; the box body 1 and the box cover 6 are made of plastic materials

The water inlet 7 is fixedly connected with one side of the upper part of the box body 1 and is communicated with the anaerobic cavity 3; sewage enters the anaerobic cavity 3 from the water inlet 7;

the water outlet 8 is fixedly connected with the other side of the upper part of the box body 1 and is communicated with the water outlet cavity 5; the treated water on the upper layer in the water outlet cavity 5 is discharged from a drainage position;

the crushing mechanism comprises a crushing bin 9, a crushing shaft 10 and a crushing blade 11, the crushing bin 9 is installed in the anaerobic cavity 3 and communicated with the water inlet 7, a filter screen 12 is installed at the bottom of the crushing bin 9, the crushing shaft 10 is rotatably installed in the crushing bin 9, and the crushing blade 11 is installed on the crushing shaft 10; sewage entering the box body 1 from the water inlet 7 firstly enters the crushing bin 9, the crushing shaft 10 drives the crushing blade 11 to rotate, the crushing blade 11 crushes paper, plastic bags, floccules and other impurities which are easy to block in the sewage, and the crushed impurities can enter the anaerobic cavity 3 through the filter screen 12 to avoid blocking;

the anaerobic stirring mechanism comprises a stirring shaft 13 and stirring blades 14, the stirring shaft 13 is rotatably arranged in the anaerobic cavity 3, and the stirring blades 14 are fixedly arranged on the stirring shaft 13 and positioned at the bottom of the anaerobic cavity 3; the stirring shaft 13 drives the stirring blades 14 to rotate, so that the sediment at the bottom of the anaerobic cavity 3 is stirred, the sediment is prevented from accumulating at the bottom of the anaerobic cavity 3 and not participating in reaction, and the anaerobic purification effect of the sewage is improved;

the aeration stirring mechanism comprises a hollow shaft 15, an aeration pipe 16 and aeration heads 17, the hollow shaft 15 is rotatably arranged in the aerobic cavity 4, the aeration pipe 16 is fixedly arranged at the bottom of the hollow shaft 15 and is communicated with the hollow shaft 15, the aeration pipe 16 is provided with a plurality of aeration heads 17, and the aeration heads 17 are positioned at the bottom of the aerobic cavity 4; the hollow shaft 15 rotates while ventilating to drive the aeration pipe 16 and the aeration head 17 to rotate, air is introduced into the aeration pipe 16 and the aeration head 17, oxygen in the air is transferred into water by the aeration head 17 to provide oxygen for aerobic microorganisms in the aerobic cavity 4, the aeration pipe 16 and the aeration head 17 rotate to stir sewage in the aerobic cavity 4, sediment accumulation at the bottom of the aerobic cavity 4 is avoided from not participating in reaction, and the aerobic purification effect of the sewage is improved;

the reflux mechanism comprises an air lift pump 18 and a reflux pipe 19, the air lift pump 18 is arranged in the water outlet cavity 5, one end of the reflux pipe 19 is communicated with the output end of the air lift pump 18, and the other end of the reflux pipe 19 extends to the bottom of the anaerobic cavity 3; after the air inlet end of the air stripping pump 18 is ventilated, water and sediment at the bottom of the water outlet cavity 5 are pumped into a return pipe 19, and the return pipe 19 conveys the water and the sediment at the bottom of the water outlet cavity 5 to an anaerobic tank, so that the nitrification-denitrification reaction is facilitated, and the denitrification efficiency is improved;

the rotary driving mechanism is in transmission connection with the crushing shaft 10, the stirring shaft 13 and the hollow shaft 15 and drives the crushing shaft 10, the stirring shaft 13 and the hollow shaft 15 to rotate; the rotary driving mechanism comprises a waterproof shell 20, a pneumatic motor 21, a worm 22, a worm wheel 23, a rotary joint 24 and a belt transmission assembly 25 are arranged in the waterproof shell 20, the pneumatic motor 21 is fixedly installed in the waterproof shell 20, the worm 22 is rotatably installed in the waterproof shell 20, an output shaft of the pneumatic motor 21 is connected with the worm 22 through a coupling, a first bevel gear 26 is installed at the other end of the worm 22, the upper end of the crushing shaft 10 extends into the waterproof shell 20 and is provided with a second bevel gear 27, the first bevel gear 26 is in meshed connection with the second bevel gear 27, the upper end of the stirring shaft 13 extends into the waterproof shell 20 and is provided with the worm wheel 23, the worm wheel 23 is in meshed connection with the worm 22, the upper end of the hollow shaft 15 extends into the waterproof shell 20 and is connected with the output end of the rotary joint 24, a first air inlet pipe 28 is installed at the air inlet end of the pneumatic motor 21, an exhaust pipe 29 is installed at the air outlet end of the pneumatic motor 21, the other end of the exhaust pipe 29 is connected with the input end of the rotary joint 24, and the stirring shaft 13 is in transmission connection with the hollow shaft 15 through the belt transmission assembly 25; the belt transmission component 25 comprises two belt pulleys and a belt, the two belt pulleys are respectively arranged on the stirring shaft 13 and the hollow shaft 15, and the two belt pulleys are in transmission connection through the belt. The crushing shaft 10, the stirring shaft 13 and the hollow shaft 15 are rotatably arranged at the bottom of the waterproof shell 20 through bearings. The first air inlet pipe 28 is communicated with a high-pressure air source, the high-pressure air source can be an air compressor, the high-pressure air source leads high-pressure airflow into the pneumatic motor 21 from the first air inlet pipe 28, so that the pneumatic motor 21 rotates, the pneumatic motor 21 drives the worm 22 to rotate, the worm 22 drives the second bevel gear 27 and the crushing shaft 10 to rotate at a high speed through the first bevel gear 26, the worm 22 drives the worm wheel 23 to rotate, the transmission of the worm wheel 23 and the worm wheel 23 plays a role in speed reduction, so that the stirring shaft 13 rotates at a low speed, the anaerobic cavity 3 is stirred at a low speed through the stirring blade 14, and sewage turning and anaerobic microorganisms are prevented from being separated from the first filler 36 due to high-speed rotation; the stirring shaft 13 drives the hollow shaft 15 to rotate at a low speed through the belt transmission assembly 25.

In order to provide high-pressure air for the air stripping pump 18 and the air motor 21, a second air inlet pipe 30 is installed at the air inlet end of the air stripping pump 18, the second air inlet pipe 30 and the first air inlet pipe 28 are communicated with an air source through a tee joint 31, a first valve 32 is installed on the first air inlet pipe 28, and a second valve 33 is installed on the second air inlet pipe 30. The first valve 32 and the second valve 33 are both manual valves, and have functions of stopping, adjusting and the like.

In order to facilitate the sewage in the anaerobic cavity 3 to enter the aerobic cavity 4, the anaerobic cavity 3 is communicated with the aerobic cavity 4 through a first drainage pipe 34, the upper end of the first drainage pipe 34 is communicated with the upper part of the anaerobic cavity 3, and the lower end of the first drainage pipe 34 is communicated with the lower part of the aerobic cavity 4. The sewage purified by the anaerobic microorganisms in the anaerobic cavity 3 moves to the upper part of the anaerobic cavity 3 from bottom to top and enters the lower part of the aerobic cavity 4 through the first drainage tube 34, so as to be convenient for contacting with the aerobic microorganisms in the aerobic cavity 4.

In order to facilitate the sewage in the aerobic cavity 4 to enter the water outlet cavity 5, the aerobic cavity 4 is communicated with the water outlet cavity 5 through a second drainage tube 35, the upper end of the second drainage tube 35 is communicated with the upper part of the aerobic cavity 4, and the lower end of the second drainage tube 35 is communicated with the lower part of the water outlet cavity 5. The sewage purified by aerobic microorganisms in the aerobic cavity 4 moves to the upper part of the aerobic cavity 4 from bottom to top and enters the lower part of the water outlet cavity 5 through the second drainage tube 35, so that the sediment is conveniently accumulated at the lower part of the water outlet cavity 5, and the sediment discharged from a water outlet is reduced.

In order to facilitate the sedimentation and the extraction of the bottoms of the anaerobic cavity 3 and the water outlet cavity 5, the air stripping pump 18 is arranged at the bottom of the water outlet cavity 5, the return pipe 19 is provided with a water pumping pipe 38 communicated with the return pipe, and the water pumping pipe 38 is provided with a third valve 39. When the anaerobic cavity 3 and the water outlet cavity 5 are cleaned, the water suction pump is connected with the water suction pipe 38, the first valve 32 and the second valve 33 are closed, the third valve 39 is opened, the water suction pump is started, negative pressure is formed in the water suction pipe 38, water and bottom sediment which are pumped into the anaerobic cavity 3 through the return pipe 19 are pumped into the water outlet cavity 5 through the air stripping pump 18, and the water and the bottom sediment are pumped into the water outlet cavity 5.

To facilitate detection of the liquid level in the water chamber 5, a liquid level gauge 40 is mounted in the water outlet chamber 5.

In the present embodiment, all the electrical components and the power supplies adapted to the electrical components are connected through wires, and an appropriate controller should be selected according to actual conditions to meet control requirements, specific connection and control sequences.

In this embodiment: sewage enters the box body 1 from the water inlet 7 and firstly enters the crushing bin 9, the first valve 32 and the second valve 33 are opened, the high-pressure air source is connected, the high-pressure air source leads high-pressure air into the first air inlet pipe 28 and the second air inlet pipe 30, the pneumatic motor 21 and the air stripping pump 18 are ventilated, the pneumatic motor 21 drives the worm 22 to rotate, the worm 22 drives the second bevel gear 27 and the crushing shaft 10 to rotate at high speed through the first bevel gear 26, the crushing blade 11 crushes paper, plastic bags, floccules and other impurities which are easy to block in the sewage in the crushing bin 9, and the crushed impurities can enter the anaerobic cavity 3 through the filter screen 12 to avoid blocking; the worm 22 drives the worm wheel 23 and the stirring shaft 13 to rotate at a low speed, and the stirring blade 14 is used for stirring the anaerobic cavity 3 at a low speed to prevent precipitation;

in the process that the sewage in the anaerobic cavity 3 moves to the upper part of the anaerobic cavity 3 from bottom to top, the sewage passes through the first filler 36, is purified by anaerobic microorganisms and then enters the lower part of the aerobic cavity 4 through the first drainage tube 34, during the process, the pneumatic motor 21 conveys airflow input from the air inlet end of the pneumatic motor to the rotary joint 24 and the hollow shaft 15 through the exhaust tube 29, the stirring shaft 13 drives the hollow shaft 15 to rotate at a low speed through the belt transmission component 25, the hollow shaft 15 drives the aeration tube 16 and the aeration head 17 to rotate, and air is introduced into the aeration tube 16 and the aeration head 17, the aeration head 17 transfers oxygen in the air into the water to provide oxygen for aerobic microorganisms in the aerobic cavity 4, the aeration tube 16 and the aeration head 17 rotate to stir the sewage in the aerobic cavity 4, so that the sediment in the aerobic cavity 4 is prevented from accumulating at the bottom of the aerobic cavity 4 and not participating in the reaction, the sewage purification effect is improved, the sewage in the process that the sewage moves from bottom to the upper part of the aerobic cavity 4 from bottom to top through the second filler 37 and contacts the aerobic cavity 4, the aerobic microorganisms enter the lower part of the effluent cavity 5 after being purified by the aerobic microorganism drainage tube 35, the sediment in the effluent cavity 5, the effluent is pumped into the anaerobic cavity 5 by gravity, the anaerobic sediment in the effluent pump, the effluent is beneficial to improve the denitrification efficiency, and the effluent pool, and the effluent of the effluent pool, and the effluent is beneficial to the denitrification pool, and the effluent for the denitrification efficiency;

because most of the sediment is accumulated at the bottom of the water outlet cavity 5, purified water with better water quality at the upper part of the water outlet cavity 5 can be discharged from the water outlet, and the discharged purified water can be used for flushing toilets, watering vegetable lands, green belts and the like;

when the sewage treatment device is cleaned regularly, the water suction pump is connected with the water suction pipe 38, the first valve 32 and the second valve 33 are closed, negative pressure is formed in the water suction pipe 38, water and bottom sediment which are pumped into the anaerobic cavity 3 through the return pipe 19 are pumped into the water outlet cavity 5 through the air stripping pump 18.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Claims (8)

1. A rural sewage treatment plant, includes:

the inner cavity of the box body (1) is divided into an anaerobic cavity (3), an aerobic cavity (4) and a water outlet cavity (5) by a partition plate (2);

the box cover (6) is arranged at the top of the box body (1) and is used for covering the box body (1);

the water inlet (7) is fixedly connected with one side of the upper part of the box body (1) and is communicated with the anaerobic cavity (3);

the water outlet (8) is fixedly connected with the other side of the upper part of the box body (1) and is communicated with the water outlet cavity (5);

it is characterized by also comprising:

the crushing mechanism comprises a crushing bin (9), a crushing shaft (10) and crushing blades (11), wherein the crushing bin (9) is installed in the anaerobic cavity (3) and is communicated with the water inlet (7), a filter screen (12) is installed at the bottom of the crushing bin (9), the crushing shaft (10) is rotatably installed in the crushing bin (9), and the crushing blades (11) are installed on the crushing shaft (10);

the anaerobic stirring mechanism comprises a stirring shaft (13) and stirring blades (14), the stirring shaft (13) is rotatably arranged in the anaerobic cavity (3), and the stirring blades (14) are fixedly arranged on the stirring shaft (13) and are positioned at the bottom of the anaerobic cavity (3);

the aeration stirring mechanism comprises a hollow shaft (15), aeration pipes (16) and aeration heads (17), wherein the hollow shaft (15) is rotatably arranged in the aerobic cavity (4), the aeration pipes (16) are fixedly arranged at the bottom of the hollow shaft (15) and are communicated with the hollow shaft (15), the aeration pipes (16) are provided with a plurality of aeration heads (17), and the aeration heads (17) are positioned at the bottom of the aerobic cavity (4);

the reflux mechanism comprises a gas stripping pump (18) and a reflux pipe (19), the gas stripping pump (18) is installed in the water outlet cavity (5), one end of the reflux pipe (19) is communicated with the output end of the gas stripping pump (18), and the other end of the reflux pipe (19) extends to the bottom of the anaerobic cavity (3);

and the rotary driving mechanism is in transmission connection with the crushing shaft (10), the stirring shaft (13) and the hollow shaft (15) and drives the crushing shaft (10), the stirring shaft (13) and the hollow shaft (15) to rotate.

2. The rural sewage treatment device according to claim 1, wherein the rotary driving mechanism comprises a waterproof case (20), a pneumatic motor (21), a worm (22), a worm wheel (23), a rotary joint (24) and a belt transmission assembly (25) are arranged in the waterproof case (20), the pneumatic motor (21) is fixedly installed in the waterproof case (20), the worm (22) is rotatably installed in the waterproof case (20), an output shaft of the pneumatic motor (21) is connected with the worm (22) through a coupler, a first bevel gear (26) is installed at the other end of the worm (22), the upper end of the crushing shaft (10) extends into the waterproof case (20) and is provided with a second bevel gear (27), the first bevel gear (26) is in meshed connection with the second bevel gear (27), the upper end of the stirring shaft (13) extends into the waterproof case (20) and is provided with the worm wheel (23), the worm wheel (23) is in meshed connection with the worm (22), the upper end of the hollow shaft (15) extends into the waterproof case (20) and is connected with the output end of the rotary joint (24), the pneumatic motor (21) is provided with a first air inlet end, the pneumatic motor (29) is connected with the belt transmission assembly (29), and the other end of the stirring shaft (13) is connected with the belt transmission assembly (29), and the stirring shaft (13).

3. The rural sewage treatment plant according to claim 2, wherein a second air inlet pipe (30) is installed at the air inlet end of the air stripping pump (18), the second air inlet pipe (30) and the first air inlet pipe (28) are communicated with an air source through a tee joint (31), a first valve (32) is installed on the first air inlet pipe (28), and a second valve (33) is installed on the second air inlet pipe (30).

4. The rural sewage treatment device according to claim 1, wherein the anaerobic chamber (3) is communicated with the aerobic chamber (4) through a first drainage pipe (34), the upper end of the first drainage pipe (34) is communicated with the upper part of the anaerobic chamber (3), and the lower end of the first drainage pipe (34) is communicated with the lower part of the aerobic chamber (4).

5. The rural sewage treatment device according to claim 1, wherein the aerobic chamber (4) is communicated with the water outlet chamber (5) through a second drainage tube (35), the upper end of the second drainage tube (35) is communicated with the upper part of the aerobic chamber (4), and the lower end of the second drainage tube (35) is communicated with the lower part of the water outlet chamber (5).

6. The rural sewage treatment plant according to claim 1, wherein a first filler (36) is arranged in the anaerobic chamber (3), and a second filler (37) is arranged in the aerobic chamber (4).

7. The rural sewage treatment device according to claim 1, wherein the air lift pump (18) is positioned at the bottom of the water outlet cavity (5), the return pipe (19) is provided with a water pumping pipe (38) communicated with the return pipe, and the water pumping pipe (38) is provided with a third valve (39).

8. The rural sewage treatment plant according to claim 1, wherein a liquid level meter (40) is installed in the water outlet cavity (5).

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