CN111302510A - Sewage treatment plant for municipal works - Google Patents
Sewage treatment plant for municipal works Download PDFInfo
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- CN111302510A CN111302510A CN201911203199.7A CN201911203199A CN111302510A CN 111302510 A CN111302510 A CN 111302510A CN 201911203199 A CN201911203199 A CN 201911203199A CN 111302510 A CN111302510 A CN 111302510A
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- side wall
- box body
- half area
- bottom end
- sewage treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of accessories of municipal drainage systems, in particular to a sewage treatment device for municipal engineering, which can scrape sundries on a filter screen in the process that sewage enters a working cavity and prevent the filter screen from being blocked due to the fact that the sundries are statically accumulated on the filter screen; the condition in the working cavity can be conveniently observed by workers; the water-saving type water-saving filter box comprises a box body, four groups of supporting legs, a first motor and a filter screen, wherein a water drain pipe is communicated with the lower half area of the left side wall of the box body, a control valve is arranged on the water drain pipe, a first transmission shaft is arranged at the output end of the top of the first motor, and a plurality of groups of stirring blades are arranged in the upper half area of the outer side wall of the first transmission; the inner gear ring is arranged in the upper half area of the inner side wall of the mounting hole, and a second transmission shaft is arranged at the output end of the bottom of the second motor; an observation hole is arranged in the central area of the front side wall of the box body, and a transparent plate is arranged at the observation hole.
Description
Technical Field
The invention relates to the technical field of accessories of municipal drainage systems, in particular to a sewage treatment device for municipal engineering.
Background
As is well known, a sewage treatment apparatus for municipal engineering is an auxiliary apparatus for treating sewage in a municipal drainage system, which is widely used in the field of municipal drainage systems; the existing sewage treatment device for municipal engineering comprises a box body, four groups of supporting legs, a first motor and a filter screen, wherein the top ends of the four groups of supporting legs are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the box body, a working cavity is arranged in the box body, a box opening is arranged at the top end of the box body and is communicated with the working cavity, the filter screen is transversely arranged at the upper half area in the working cavity, a dosing opening is arranged at the upper half area on the left side wall of the box body and is communicated with the working cavity, a drain pipe is arranged in the lower half area on the left side wall of the box body and is provided with a control valve, a rotating hole is longitudinally arranged in the central area at the bottom end of the box body, the first motor is arranged in the central area at the bottom end of the box body, a first transmission shaft is arranged, the first transmission shaft is mechanically sealed with the inner side wall of the rotating hole; when the existing sewage treatment device for municipal engineering is used, sewage is poured into a working cavity from a box opening, large impurities in the sewage are filtered through a filter screen, a disinfectant is added into the working cavity from a chemical adding opening, a first motor is electrified and drives a first transmission shaft to rotate, the first transmission shaft drives a plurality of groups of stirring blades to mix and stir the sewage and the disinfectant in the working cavity, a control valve is opened, and the disinfected water in the working cavity is discharged through a water discharge pipe and is subjected to subsequent treatment and utilization; the existing sewage treatment device for municipal engineering is found that sundries accumulated on the filter screen easily block holes on the filter screen, so that the filtering efficiency of the filter screen is influenced, and the use reliability of the filter screen is poor; the condition of being not convenient for the staff to the work intracavity is observed, leads to its convenience of use relatively poor.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device which can scrape sundries on a filter screen in the process that sewage enters a working cavity, prevent the sundries from being statically accumulated on the filter screen to cause the blockage of the filter screen and improve the use reliability; can be convenient for the staff to observe the condition of work intracavity, improve the sewage treatment plant for municipal works of convenience of use.
The invention relates to a sewage treatment device for municipal engineering, which comprises a box body, four groups of supporting legs, a first motor and a filter screen, wherein the top ends of the four groups of supporting legs are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the box body, a working cavity is arranged in the box body, a box opening is arranged at the top end of the box body and is communicated with the working cavity, a dosing opening is arranged in the upper half area of the left side wall of the box body and is communicated with the working cavity, a drain pipe is arranged in the lower half area of the left side wall, a control valve is arranged on the drain pipe, a rotating hole is longitudinally formed in the central area of the bottom end of the box body, a first motor is arranged in the central area of the bottom end of the box body, a first transmission shaft is arranged at the output end of the top of the first motor, the top end of the first transmission shaft penetrates through the rotating hole and extends into the working cavity, a plurality of groups of stirring blades are arranged in the upper half area of the outer side wall of the first transmission shaft, and the first transmission shaft and the inner side wall of the rotating hole; the novel gear box is characterized by further comprising a rotating plate, a transverse plate, a second motor, a gear, a mounting plate and a scraper plate, wherein an annular groove is formed in the upper half area of the inner side wall of the box body, the rotating plate is located in the annular groove, a first ball bearing is arranged between the rotating plate and the inner side wall of the annular groove, a mounting hole is longitudinally formed in the central area of the top end of the rotating plate, a filter screen is transversely mounted in the mounting hole, an inner gear ring is arranged in the upper half area of the inner side wall of the mounting hole, the left half area of the bottom end of the transverse plate is connected with the left half area of the top end of the box body, a through hole is longitudinally formed in the right half area of the top end of the transverse plate, the second motor is mounted in the right half area of the top end of the transverse plate, the right half area of the bottom end of the mounting plate is connected with the right half area of the top end of the box body, the top end of the scraper is connected with the left half area of the bottom end of the mounting plate, and the bottom end of the scraper is in contact with the right half area of the top end of the filter screen; the central area of the front side wall of the box body is provided with an observation hole, a transparent plate is arranged at the observation hole, and the front side wall of the transparent plate is provided with scales.
The sewage treatment device for municipal engineering further comprises a left mounting rod and a right mounting rod, the top ends of the left mounting rod and the right mounting rod are respectively connected with the left half area and the right half area of the bottom end of the box body, and the bottom ends of the left mounting rod and the right mounting rod are respectively connected with the left end and the right end of the first motor.
The sewage treatment device for municipal engineering further comprises a connecting rod and a fixing rod, wherein the bottom end of the connecting rod is connected with the central area of the top end of the transverse plate, the top end of the connecting rod is connected with the left half area of the bottom end of the fixing rod, and the right end of the fixing rod is connected with the left end of the second motor.
The sewage treatment device for municipal engineering further comprises a reinforcing rod, wherein the top end of the reinforcing rod is connected with the right half area of the bottom end of the transverse plate, and the bottom end of the reinforcing rod is connected with the upper half area of the inner left side wall of the box body.
The sewage treatment device for municipal engineering further comprises a left handle and a right handle, wherein the right end of the left handle and the left end of the right handle are respectively connected with the central areas of the left side wall and the right side wall of the box body.
The sewage treatment device for municipal engineering further comprises four groups of bottom plates, and the bottom ends of the four groups of supporting legs are respectively connected with the central areas of the top ends of the four groups of bottom plates.
According to the sewage treatment device for municipal engineering, the upper half area of the right side wall of the box body is provided with the cleaning port, the cleaning port is communicated with the working cavity, and the cleaning port is detachably provided with the baffle.
According to the sewage treatment device for municipal engineering, the plurality of groups of stirring blades are provided with the small holes.
Compared with the prior art, the invention has the beneficial effects that: sewage is poured into the working cavity from the box opening, larger impurities in the sewage are filtered through the filter screen, the second motor is electrified, the second motor drives the second transmission shaft to rotate, the second transmission shaft drives the gear to rotate, the gear drives the inner gear ring to rotate due to the fact that the gear is meshed with the inner gear ring, the inner gear ring drives the rotating plate to rotate in the annular groove, the first ball bearing can reduce friction resistance generated when the rotating plate rotates in the annular groove, the rotating plate drives the filter screen to rotate, in the rotating process of the filter screen, the scraper scrapes the impurities on the filter screen to move in different ways due to the fact that the scraper is fixed in position and the bottom end of the scraper is in contact with the right half area of the top end of the filter screen, the disinfectant is added into the working cavity from the chemical adding opening, the first motor is electrified, the first motor drives the first transmission shaft to rotate, and the first transmission shaft, the control valve is opened, the water which is subjected to disinfection treatment in the working cavity is discharged through the drain pipe, and subsequent treatment and utilization are carried out, so that sundries on the filter screen can be scraped in the process that sewage enters the working cavity, the filter screen is prevented from being blocked due to the fact that the sundries are statically accumulated on the filter screen, and the use reliability is improved; the accessible transparent plate is observed the condition of work intracavity, can carry out the reading to the water level through the scale, improves the convenience of use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view showing the connection between the case and the transparent plate;
FIG. 4 is a schematic perspective view of the structure of the rotating plate;
in the drawings, the reference numbers: 1. a box body; 2. a support leg; 3. a first motor; 4. filtering with a screen; 5. a working chamber; 6. a medicine adding port; 7. a drain pipe; 8. a control valve; 9. a first drive shaft; 10. stirring blades; 11. a rotating plate; 12. a transverse plate; 13. a second motor; 14. a gear; 15. mounting a plate; 16. a squeegee; 17. a first ball bearing; 18. an inner gear ring; 19. a second drive shaft; 20. a second ball bearing; 21. a transparent plate; 22. a left mounting bar; 23. a right mounting bar; 24. a connecting rod; 25. fixing the rod; 26. a reinforcing rod; 27. a left handle; 28. a right handle; 29. a base plate; 30. and a baffle plate.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in figures 1 to 4, the municipal engineering sewage treatment device comprises a box body 1, four groups of supporting legs 2, a first motor 3 and a filter screen 4, wherein the top ends of the four groups of supporting legs 2 are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the box body 1, a working cavity 5 is arranged in the box body 1, a box opening is arranged at the top end of the box body 1 and is communicated with the working cavity 5, a chemical feeding opening 6 is arranged in the upper half area of the left side wall of the box body 1, the chemical feeding opening 6 is communicated with the working cavity 5, a drain pipe 7 is communicated with the lower half area of the left side wall of the box body 1, a control valve 8 is arranged on the drain pipe 7, a rotating hole is longitudinally arranged in the central area of the bottom end of the box body 1, the first motor 3 is arranged in the central area of the bottom end of the box body 1, a first transmission shaft 9, a plurality of groups of stirring blades 10 are arranged in the upper half area of the outer side wall of the first transmission shaft 9, and the first transmission shaft 9 and the inner side wall of the rotating hole are mechanically sealed; the filter screen device also comprises a rotating plate 11, a transverse plate 12, a second motor 13, a gear 14, a mounting plate 15 and a scraper 16, wherein an annular groove is arranged in the upper half area of the inner side wall of the box body 1, the rotating plate 11 is positioned in the annular groove, a first ball bearing 17 is arranged between the rotating plate 11 and the inner side wall of the annular groove, a mounting hole is longitudinally arranged in the central area of the top end of the rotating plate 11, the filter screen 4 is transversely mounted in the mounting hole, an inner gear ring 18 is arranged in the upper half area of the inner side wall of the mounting hole, the left half area of the bottom end of the transverse plate 12 is connected with the left half area of the top end of the box body 1, a through hole is longitudinally arranged in the right half area of the top end of the transverse plate 12, the second motor 13 is mounted in the right half area of the top end of the transverse plate, the gear 14 is meshed with the inner gear ring 18, the right half area of the bottom end of the mounting plate 15 is connected with the right half area of the top end of the box body 1, the top end of the scraper 16 is connected with the left half area of the bottom end of the mounting plate 15, and the bottom end of the scraper 16 is contacted with the right half area of the top end of the filter screen 4; an observation hole is arranged in the central area of the front side wall of the box body 1, a transparent plate 21 is arranged at the observation hole, and scales are arranged on the front side wall of the transparent plate 21; sewage is poured into the working cavity from the box opening, larger impurities in the sewage are filtered through the filter screen, the second motor is electrified, the second motor drives the second transmission shaft to rotate, the second transmission shaft drives the gear to rotate, the gear drives the inner gear ring to rotate due to the fact that the gear is meshed with the inner gear ring, the inner gear ring drives the rotating plate to rotate in the annular groove, the first ball bearing can reduce friction resistance generated when the rotating plate rotates in the annular groove, the rotating plate drives the filter screen to rotate, in the rotating process of the filter screen, the scraper scrapes the impurities on the filter screen to move in different ways due to the fact that the scraper is fixed in position and the bottom end of the scraper is in contact with the right half area of the top end of the filter screen, the disinfectant is added into the working cavity from the chemical adding opening, the first motor is electrified, the first motor drives the first transmission shaft to rotate, and the first transmission shaft, the control valve is opened, the water which is subjected to disinfection treatment in the working cavity is discharged through the drain pipe, and subsequent treatment and utilization are carried out, so that sundries on the filter screen can be scraped in the process that sewage enters the working cavity, the filter screen is prevented from being blocked due to the fact that the sundries are statically accumulated on the filter screen, and the use reliability is improved; the accessible transparent plate is observed the condition of work intracavity, can carry out the reading to the water level through the scale, improves the convenience of use.
The sewage treatment device for municipal engineering further comprises a left mounting rod 22 and a right mounting rod 23, the top ends of the left mounting rod 22 and the right mounting rod 23 are respectively connected with the left half area and the right half area of the bottom end of the box body 1, and the bottom ends of the left mounting rod 22 and the right mounting rod 23 are respectively connected with the left end and the right end of the first motor 3; left side installation pole and right side installation pole can be fixed first motor, improve the reliability in utilization.
The sewage treatment device for municipal engineering further comprises a connecting rod 24 and a fixing rod 25, wherein the bottom end of the connecting rod 24 is connected with the central area of the top end of the transverse plate 12, the top end of the connecting rod 24 is connected with the left half area of the bottom end of the fixing rod 25, and the right end of the fixing rod 25 is connected with the left end of the second motor 13; the connecting rod and the dead lever can be fixed the second motor, improve and use the reliability.
The sewage treatment device for municipal engineering further comprises a reinforcing rod 26, the top end of the reinforcing rod 26 is connected with the right half area of the bottom end of the transverse plate 12, and the bottom end of the reinforcing rod 26 is connected with the upper half area of the left side wall in the box body 1; the reinforcing rod can support the transverse plate, so that the use stability is improved.
The sewage treatment device for municipal engineering further comprises a left handle 27 and a right handle 28, wherein the right end of the left handle 27 and the left end of the right handle 28 are respectively connected with the central areas of the left side wall and the right side wall of the box body 1; the left handle and the right handle can be convenient for the staff to remove the device, improve and use the flexibility.
The sewage treatment device for municipal engineering further comprises four groups of bottom plates 29, wherein the bottom ends of the four groups of supporting legs 2 are respectively connected with the central areas of the top ends of the four groups of bottom plates 29; the stability of four groups of bottom plate reinforcing devices improves the stability in use.
According to the sewage treatment device for municipal engineering, the upper half area of the right side wall of the box body 1 is provided with the cleaning port, the cleaning port is communicated with the working cavity 5, and the cleaning port is detachably provided with the baffle 30; the baffle is opened, sundries in the working cavity can be cleaned through the cleaning port, and the use convenience is improved.
According to the sewage treatment device for municipal engineering, the plurality of groups of stirring blades 10 are provided with the small holes; the small holes can improve the mixing effect of the sewage and the disinfectant in the working cavity and improve the working efficiency.
The invention relates to a sewage treatment device for municipal engineering, which is characterized in that when in operation, sewage is poured into a working cavity from a box opening, larger impurities in the sewage are filtered by a filter screen, a second motor is electrified, a second motor drives a second transmission shaft to rotate, the second transmission shaft drives a gear to rotate, the gear drives an inner gear ring to rotate due to the meshing of the gear and the inner gear ring, the inner gear ring drives a rotating plate to rotate in an annular groove, a first ball bearing can reduce the friction resistance generated when the rotating plate rotates in the annular groove, the rotating plate drives the filter screen to rotate, as the scraper is fixed in position and the bottom end of the scraper is contacted with the right half area of the top end of the filter screen, the scraper scrapes the impurities on the filter screen to move differently during the rotation of the filter screen, a disinfectant is added into the working cavity from a chemical adding opening, the first motor is electrified, the, the first transmission shaft drives the multiple groups of stirring blades to mix and stir the sewage and the disinfectant in the working cavity, the control valve is opened, the disinfected water in the working cavity is discharged through the drain pipe, and the subsequent treatment and utilization are carried out, so that sundries on the filter screen can be scraped in the process that the sewage enters the working cavity, the filter screen is prevented from being blocked due to the fact that the sundries are statically accumulated on the filter screen, and the use reliability is improved; the condition in the working cavity can be observed through the transparent plate, the water level can be read through the scales, and the use convenience is improved; the left mounting rod and the right mounting rod can fix the first motor, so that the use reliability is improved; the connecting rod and the fixing rod can fix the second motor, so that the use reliability is improved; the reinforcing rods can support the transverse plates, so that the use stability is improved; the left handle and the right handle can facilitate the movement of the device by workers, so that the use flexibility is improved; the four groups of bottom plates enhance the stability of the device, and improve the use stability; the baffle is opened, so that sundries in the working cavity can be cleaned through the cleaning port, and the use convenience is improved; the small holes can improve the mixing effect of the sewage and the disinfectant in the working cavity and improve the working efficiency.
The first motor and the second motor used by the sewage treatment device for municipal engineering are purchased from the market and only need to be installed and used according to the specification.
According to the sewage treatment device for municipal engineering, the installation mode, the connection mode or the arrangement mode of all the components are common mechanical modes, and the specific structures, models and coefficient indexes of all the components are self-contained technologies, so that the sewage treatment device can be implemented as long as the beneficial effects of the sewage treatment device can be achieved, and further description is omitted.
In the sewage treatment apparatus for municipal works according to the present invention, unless otherwise specified, the terms "up, down, left, right, front, rear, inner, rear, front, rear, inner, and vertical, horizontal" and the like are used to indicate only the orientation of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A sewage treatment device for municipal engineering comprises a box body (1), four groups of supporting legs (2), a first motor (3) and a filter screen (4), wherein the top ends of the four groups of supporting legs (2) are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the box body (1), a working cavity (5) is arranged in the box body (1), a box opening is formed in the top end of the box body (1) and is communicated with the working cavity (5), a dosing opening (6) is formed in the upper half area of the left side wall of the box body (1), the dosing opening (6) is communicated with the working cavity (5), a drain pipe (7) is communicated with the lower half area of the left side wall of the box body (1), a control valve (8) is arranged on the drain pipe (7), a rotating hole is longitudinally formed in the central area of the bottom end of the box body (1), the first motor (3) is installed in the central area of the bottom end of, the top end of the first transmission shaft (9) penetrates through the rotating hole and extends into the working cavity (5), a plurality of groups of stirring blades (10) are arranged on the upper half area of the outer side wall of the first transmission shaft (9), and the first transmission shaft (9) and the inner side wall of the rotating hole are mechanically sealed; the novel multifunctional cleaning device is characterized by further comprising a rotating plate (11), a transverse plate (12), a second motor (13), a gear (14), a mounting plate (15) and a scraper (16), wherein an annular groove is formed in the upper half area of the inner side wall of the box body (1), the rotating plate (11) is located in the annular groove, a first ball bearing (17) is arranged between the rotating plate (11) and the inner side wall of the annular groove, a mounting hole is longitudinally formed in the central area of the top end of the rotating plate (11), a filter screen (4) is transversely installed in the mounting hole, an annular gear (18) is arranged in the upper half area of the inner side wall of the mounting hole, the left half area of the bottom end of the transverse plate (12) is connected with the left half area of the top end of the box body (1), a through hole is longitudinally formed in the right half area of the top end of the transverse plate (12), the second, the bottom end of the second transmission shaft (19) penetrates through the through hole and is connected with the central area of the top end of the gear (14), a second ball bearing (20) is arranged between the second transmission shaft (19) and the inner side wall of the through hole, the gear (14) is meshed with the inner gear ring (18), the right half area of the bottom end of the mounting plate (15) is connected with the right half area of the top end of the box body (1), the top end of the scraper (16) is connected with the left half area of the bottom end of the mounting plate (15), and the bottom end of the scraper (16) is contacted with the right half area of the top end; an observation hole is arranged in the central area of the front side wall of the box body (1), a transparent plate (21) is arranged at the observation hole, and scales are arranged on the front side wall of the transparent plate (21).
2. The municipal sewage treatment plant according to claim 1, further comprising a left mounting rod (22) and a right mounting rod (23), wherein the top ends of the left mounting rod (22) and the right mounting rod (23) are respectively connected to the left half area and the right half area of the bottom end of the tank (1), and the bottom ends of the left mounting rod (22) and the right mounting rod (23) are respectively connected to the left end and the right end of the first motor (3).
3. The municipal sewage treatment plant according to claim 2, further comprising a connecting rod (24) and a fixing rod (25), wherein the bottom end of the connecting rod (24) is connected to the central region of the top end of the transverse plate (12), the top end of the connecting rod (24) is connected to the left half region of the bottom end of the fixing rod (25), and the right end of the fixing rod (25) is connected to the left end of the second motor (13).
4. The municipal sewage treatment plant according to claim 3, further comprising a reinforcing rod (26), wherein the top end of the reinforcing rod (26) is connected to the right half of the bottom end of the cross plate (12), and the bottom end of the reinforcing rod (26) is connected to the upper half of the left side wall inside the tank body (1).
5. The municipal sewage treatment device according to claim 4, further comprising a left handle (27) and a right handle (28), wherein the right end of said left handle (27) and the left end of said right handle (28) are connected to the central regions of the left side wall and the right side wall of said tank (1), respectively.
6. The municipal sewage treatment plant according to claim 5, further comprising four sets of bottom plates (29), wherein the bottom ends of the four sets of legs (2) are connected to the central areas of the top ends of the four sets of bottom plates (29), respectively.
7. The municipal sewage treatment plant according to claim 6, wherein a cleaning port is provided in the upper half of the right side wall of the tank (1), said cleaning port communicating with the working chamber (5), and a baffle (30) is detachably provided at the cleaning port.
8. The municipal sewage treatment plant according to claim 7, wherein the plurality of sets of stirring vanes (10) are provided with small holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203199.7A CN111302510A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment plant for municipal works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203199.7A CN111302510A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment plant for municipal works |
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| CN111302510A true CN111302510A (en) | 2020-06-19 |
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| CN201911203199.7A Pending CN111302510A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment plant for municipal works |
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