CN216998084U - Sewage treatment station conveying system based on roots fan drive - Google Patents
Sewage treatment station conveying system based on roots fan drive Download PDFInfo
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- CN216998084U CN216998084U CN202220798191.0U CN202220798191U CN216998084U CN 216998084 U CN216998084 U CN 216998084U CN 202220798191 U CN202220798191 U CN 202220798191U CN 216998084 U CN216998084 U CN 216998084U
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Abstract
The utility model provides a sewage treatment station conveying system based on Roots blower driving, which comprises an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a flocculation reaction tank, a flocculation sedimentation tank, a clear water tank, a sludge concentration tank, a Roots blower and a central controller, wherein a first air stripping device is arranged in the adjusting tank, a second air stripping device is arranged in the aerobic tank, a third air stripping device and a fourth air stripping device are arranged in the secondary sedimentation tank, a gas stirring device is arranged in the flocculation reaction tank, a fifth air stripping device is arranged in the flocculation sedimentation tank, and the Roots blower is used for driving the first air stripping device, the second air stripping device, the gas stirring device, the third air stripping device, the fourth air stripping device and the fifth air stripping device. The utility model only uses the Roots blower as a power source, does not need an additional driving motor, has safe and efficient conveying process, is convenient to maintain, can improve the sewage treatment efficiency, and is suitable for small and medium-sized sewage treatment stations adopting an activated sludge method.
Description
Technical Field
The utility model relates to a sewage treatment technology, in particular to a Roots blower-driven conveying system for a sewage treatment station.
Background
The small and medium-sized sewage treatment stations are used for treating domestic sewage in villages and small towns, and an activated sludge method is widely adopted. The activated sludge process is to continuously introduce air into the wastewater (aeration), and after a certain period of time, sludge-like flocs (activated sludge) are formed due to the proliferation of aerobic microorganisms, on which microbial communities mainly comprising the zooglea inhabit and have strong capability of adsorbing and oxidizing organic matters, and the activated sludge process is to utilize the biological coagulation, adsorption and oxidation of the activated sludge to decompose and remove organic pollutants in the wastewater.
In the activated sludge process, the sewage is often lifted by power from one treatment tank to another treatment tank, for example, from a regulating tank to an anaerobic tank, the submerged motor plasma vane pump is used as a drive, but the water pump has a complex structure and high manufacturing cost, and simultaneously, as impurities in the sewage are more and the pH value is changed greatly, the water pump is easy to block and corrode, the overhaul difficulty is high, and the overhaul cost is high.
In the activated sludge method, water treated by an aeration tank contains activated sludge, and after the water enters a secondary sedimentation tank, the activated sludge is precipitated in the secondary sedimentation tank and can be recycled, so that the sludge precipitated in the secondary sedimentation tank can be returned to an anaerobic tank through a sludge reflux device to continue to participate in sewage treatment; in the prior art, the sludge reflux device also adopts a mechanical plasma vane pump to pump sludge to a reflux pipeline when the sludge is about to precipitate, but the blades rotating at a high speed greatly damage microbial flora used for improving water quality in sewage, and the sewage treatment effect is influenced.
In addition, because a large number of plasma vane pumps are adopted in the prior art, the control circuit and the power circuit are complex, when a fault occurs, the difficulty of troubleshooting is high, and the normal operation of the sewage treatment station is also influenced.
Disclosure of Invention
Aiming at the problems in the background art, the utility model aims to provide a sewage treatment station conveying system based on Roots blower driving.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a sewage treatment station conveying system based on Roots blower driving comprises a regulating reservoir, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a flocculation reaction tank, a flocculation sedimentation tank, a clear water tank, a sludge concentration tank, a Roots blower and a central controller, wherein a first air-lift device is arranged in the regulating reservoir, the water outlet end of the first air-lift device is connected with the anaerobic tank, the anaerobic tank is communicated with the anoxic tank through a submerged flow pipe, the anoxic tank is communicated with the aerobic tank through a flat flow pipe A, the aerobic tank is communicated with the secondary sedimentation tank through an overflow pipe, the secondary sedimentation tank is communicated with the flocculation reaction tank through an overflow pipe B, the flocculation reaction tank is communicated with the flocculation sedimentation tank through a flat flow pipe C, and the flocculation sedimentation tank is communicated with the clear water tank through a flat flow pipe D;
the aerobic tank is internally provided with a second gas stripping device which is used for aeration and refluxing the nitrified activated sludge in the aerobic tank to the anoxic tank;
the secondary sedimentation tank is internally provided with a third air-lifting device and a fourth air-lifting device, the third air-lifting device is used for returning part of activated sludge to the anoxic tank, and the fourth air-lifting device is used for discharging sludge at the bottom of the secondary sedimentation tank into the sludge concentration tank;
a gas stirring device is arranged in the flocculation reaction tank;
the flocculation sedimentation tank is internally provided with a fifth air stripping device which is used for discharging the sludge at the bottom of the flocculation sedimentation tank into a sludge concentration tank;
the Roots blower is used for driving the first gas stripping device, the second gas stripping device, the gas stirring device, the third gas stripping device, the fourth gas stripping device and the fifth gas stripping device, and an output air pipe of the Roots blower is respectively connected with the first gas stripping device, the second gas stripping device, the gas stirring device, the third gas stripping device, the fourth gas stripping device and the fifth gas stripping device.
The first air lifting device comprises an air inlet pipe, an exhaust pipe, a first vertical pipe, a second vertical pipe, a water inlet pipe A, a drain pipe A and a diving pipe, wherein the diving pipe and the water inlet pipe A are arranged below the liquid level;
the middle part of the diving pipe is provided with a one-way valve B, and the one-way valve B is electrically connected with the output end of the central controller and is used for controlling sewage to flow from the diving pipe to the second vertical pipe in a one-way mode;
one end of the water inlet pipe A is connected with one end of the diving pipe, the other end of the water inlet pipe A is provided with a one-way valve A, and the one-way valve A is electrically connected with the output end of the central controller and is used for controlling sewage to flow from the water inlet pipe A to the diving pipe in a one-way mode;
the other end of the air inlet pipe is connected with an output air pipe of the Roots blower, the air inlet pipe is provided with an electromagnetic valve A, and the electromagnetic valve A is electrically connected with the output end of the central controller and used for controlling the on-off of the air inlet pipe;
the exhaust pipe is provided with an electromagnetic valve B, and the electromagnetic valve B is electrically connected with the output end of the central controller and used for controlling the on-off of the exhaust pipe.
The second air stripping device, the third air stripping device, the fourth air stripping device and the fifth air stripping device are all mud-water mixture air stripping pumps, each mud-water mixture air stripping pump comprises a transverse water inlet pipe B and a vertical liquid lifting pipe, water inlet holes are formed in the side wall of the water inlet pipe B at intervals, and the middle of the water inlet pipe B is communicated with the lower end of the liquid lifting pipe; the side wall of the lower part of the liquid lifting pipe is connected with a plurality of air pipes, the air inlet end of each air pipe is connected with the output air pipe of the Roots blower, the air outlet end of each air pipe is communicated with the liquid lifting pipe and is positioned below the liquid level, and the air outlet end of each air pipe is provided with an aeration plate;
the air inlet end of the air pipe is provided with an electric proportional control valve which is electrically connected with the output end of the central controller and used for adjusting the opening and the air quantity of the air pipe; and the tail end of the liquid lifting pipe is provided with a gas-liquid separation box, and the gas-liquid separation box is positioned above the liquid level.
The top of the gas-liquid separation box is provided with an exhaust port, the outlet end of the gas-liquid separation box is provided with a water outlet pipe, the upper end and the lower end of the side wall of the gas-liquid separation box are respectively provided with an upper liquid level sensor and a lower liquid level sensor, and the upper liquid level sensor and the lower liquid level sensor are respectively electrically connected with the input end of the central controller.
And a valve is arranged at the position, close to the water outlet, of the water outlet pipe.
The exhaust ends of the air pipes are consistent in height and are uniformly distributed on the side wall of the liquid lifting pipe.
The aeration plate covers the exhaust end of the air pipe, and a plurality of air holes are formed in the aeration plate.
The gas stirring device comprises a soaking pipe, the soaking pipe is integrally of an annular tubular structure, exhaust holes are uniformly distributed in two sides of the pipe wall of the soaking pipe, the soaking pipe is connected with an output air pipe of the Roots blower through an air inlet pipe B, and a valve B is arranged on the air inlet pipe B and used for controlling the on-off of the air inlet pipe B.
The utility model has the beneficial effects that: the utility model only uses the Roots blower as a power source, does not need an additional driving motor, has safe and efficient conveying process, is convenient to maintain, can improve the sewage treatment efficiency, and is suitable for small and medium-sized sewage treatment stations adopting an activated sludge method.
Drawings
FIG. 1 is a schematic view of the overall piping system of the present invention.
Fig. 2 is a schematic structural diagram of the first stripping apparatus.
FIG. 3 is a schematic view of the first stripping apparatus when bleeding air into water.
Fig. 4 is a schematic diagram of the first air stripping device during air intake and water discharge.
FIG. 5 is a schematic diagram of the construction of the slurry-water mixture air-stripping pump.
FIG. 6 is a cross-sectional view of the connection of the lift tube to the discharge end of the air tube.
Fig. 7 is a schematic structural view of the gas stirring apparatus.
Figure 8 is a top view of the immersion tube.
In the figure: 1. a regulating tank, 2, an anaerobic tank, 3, an anoxic tank, 4, an aerobic tank, 5, a secondary sedimentation tank, 6, a flocculation reaction tank, 7, a flocculation sedimentation tank, 8, a clean water tank, 9, a sludge concentration tank, 10, a Roots blower, 11, a first air lifting device, 12, a second air lifting device, 13, a gas stirring device, 14, a submerged pipe, 15, a advection pipe A, 16, an overflow pipe, 17, an overflow pipe B, 18, an advection pipe C, 19, an advection pipe D, 20, a water conveying pipe B, 21, a water conveying pipe A, 23, a fourth air lifting device, 24, a third air lifting device, 26 and a fifth air lifting device;
1101. the device comprises an air inlet pipe, 1102, an exhaust pipe, 1103, a diving pipe, 1105, water inlet pipes A, 1106, water outlet pipes A,1107, check valves A, 1108, check valves B, 1109, electromagnetic valves A, 1110, electromagnetic valves B, 1131, a first vertical pipe, 1132 and a second vertical pipe;
1201. the device comprises an air pipe, 1202, water inlet pipes B and 1203, a water inlet hole, 1204, a riser pipe, 1206, an aeration plate, 1208, a gas-liquid separation box, 1209, an exhaust port, 1210, a water outlet pipe, 1211, an upper liquid level sensor, 1212, a lower liquid level sensor, 1213, valves A and 1215 and an electric proportional control valve;
1301. immersion tube 1302, exhaust hole 1303, inlet tube B, 1304, valve B.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1 to 8, a sewage treatment station conveying system based on roots blower driving comprises an adjusting tank 1, an anaerobic tank 2, an anoxic tank 3, an aerobic tank 4, a secondary sedimentation tank 5, a flocculation reaction tank 6, a flocculation sedimentation tank 7, a clean water tank 8, a sludge concentration tank 9 and a roots blower 10, wherein a first gas stripping device 11 is arranged in the adjusting tank 1, the water outlet end of the first gas stripping device 11 is connected with the anaerobic tank 2, the anaerobic tank 2 is communicated with the anoxic tank 3 through a submerged pipe 14, the anoxic tank 3 is communicated with the aerobic tank 4 through a flat pipe a15, the aerobic tank 4 is communicated with the secondary sedimentation tank 5 through an overflow pipe 16, the secondary sedimentation tank 5 is communicated with the flocculation reaction tank 6 through an overflow pipe B17, the flocculation reaction tank 6 is communicated with the flocculation sedimentation tank 7 through a flat pipe C18, and the flocculation sedimentation tank 7 is communicated with the clean water tank 8 through a flat pipe D19;
the aerobic tank 4 is internally provided with a second gas stripping device 12, and the second gas stripping device 12 is used for aeration and returning the nitrified activated sludge in the aerobic tank 4 to the anoxic tank 3;
the secondary sedimentation tank 5 is internally provided with a third air-lifting device 24 and a fourth air-lifting device 23, the third air-lifting device 24 is used for returning part of activated sludge to the anoxic tank 3, and the fourth air-lifting device 23 is used for discharging sludge at the bottom of the secondary sedimentation tank 5 into the sludge concentration tank 9;
a gas stirring device 13 is arranged in the flocculation reaction tank 6;
the flocculation sedimentation tank 7 is internally provided with a fifth air stripping device 26, and the fifth air stripping device 26 is used for discharging the sludge at the bottom of the flocculation sedimentation tank 7 into the sludge concentration tank 9;
the Roots blower 10 is used for driving the first stripping device 11, the second stripping device 12, the gas stirring device 13, the third stripping device 24, the fourth stripping device 23 and the fifth stripping device 26, and an output air duct of the Roots blower 10 is respectively connected with the first stripping device 11, the second stripping device 12, the gas stirring device 13, the third stripping device 24, the fourth stripping device 23 and the fifth stripping device 26.
As shown in fig. 2, 3, and 4, the first gas lift device 11 includes an air intake pipe 1101, an exhaust pipe 1102, a first vertical pipe 1131, a second vertical pipe 1132, an water intake pipe a1105, a water discharge pipe a1106, and a diving pipe 1103, where the diving pipe 1103 and the water intake pipe a1105 are both disposed below the liquid level, two ends of the diving pipe 1103 are respectively connected to the first vertical pipe 1131 and the second vertical pipe 1132 which are vertically disposed, an upper end of the first vertical pipe 1131 is respectively connected to the air intake pipe 1101 and the exhaust pipe 1102, and an upper end of the second vertical pipe 1132 is connected to the water discharge pipe a 1106;
a one-way valve B1108 is arranged in the middle of the diving pipe 1103, and the one-way valve B1108 is electrically connected with the output end of the central controller and is used for controlling the sewage to flow from the diving pipe 1103 to the second standpipe 1132 in a one-way manner;
one end of the water inlet pipe A1105 is connected with one end of the diving pipe 1103, the other end of the water inlet pipe A1105 is provided with a one-way valve A1107, and the one-way valve A1107 is electrically connected with the output end of the central controller and is used for controlling sewage to flow from the water inlet pipe A1105 to the diving pipe 1103 in one way;
the other end of the air inlet pipe 1101 is connected with an output air pipe of the Roots blower 10, an electromagnetic valve A1109 is arranged on the air inlet pipe 1101, and the electromagnetic valve A1109 is electrically connected with the output end of the central controller and used for controlling the on-off of the air inlet pipe 1101;
the exhaust pipe 1102 is provided with an electromagnetic valve B1110, and the electromagnetic valve B1110 is electrically connected with the output end of the central controller and is used for controlling the on-off of the exhaust pipe 1102.
The second stripping device 12, the third stripping device 24, the fourth stripping device 23 and the fifth stripping device 26 are all slurry-water mixture stripping pumps, as shown in fig. 5 and 6, each slurry-water mixture stripping pump comprises a horizontal water inlet pipe B1202 and a vertical lift pipe 1204, water inlet holes 1203 are arranged on the side wall of the water inlet pipe B1202 at intervals, and the middle part of the water inlet pipe B1202 is communicated with the lower end of the lift pipe 1204; the lower side wall of the liquid lifting pipe 1204 is connected with a plurality of air pipes 1201, the air inlet end of each air pipe 1201 is connected with the output air pipe of the Roots blower 10, the air outlet end of each air pipe 1201 is communicated with the liquid lifting pipe 1204 and is positioned below the liquid level, and the air outlet end of each air pipe 1201 is provided with an aeration plate 1206;
an electric proportional control valve 1215 is arranged at the air inlet end of the air pipe 1201, and the electric proportional control valve 1215 is electrically connected with the output end of the central controller and is used for controlling the opening and air volume of the air pipe 1201; the end of the riser pipe 1204 is provided with a gas-liquid separation tank 1208, and the gas-liquid separation tank 1208 is located above the liquid level.
The top of gas-liquid separation case 1208 is provided with gas vent 1209, and the exit end of gas-liquid separation case 1208 is provided with outlet pipe 1210 to be provided with level sensor 1211 and lower level sensor 1212 respectively at the lateral wall upper end of gas-liquid separation case 1208, last level sensor 1211, lower level sensor 1212 respectively with the input electric connection of central controller.
A valve 1213 is arranged on the water outlet pipe 1210 near the water outlet.
The exhaust ends of the air pipes 1201 are uniform in height and are uniformly distributed on the side wall of the lift pipe 1204.
The aeration plate 1206 covers the exhaust end of the air pipe 1201, and a plurality of air holes are formed in the aeration plate 1206.
As shown in fig. 7 and 8, the gas stirring device 13 includes a immersion pipe 1301, the immersion pipe 1301 is of an annular tubular structure, exhaust holes 1302 are uniformly distributed on two sides of the pipe wall, the immersion pipe 1301 is connected with an output air pipe of the roots blower 10 through an air inlet pipe B1303, and a valve B1304 is arranged on the air inlet pipe B1303 and used for controlling the on-off of the air inlet pipe B1303.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
The present invention is not described in detail in the prior art.
Claims (8)
1. The utility model provides a sewage treatment station conveying system based on roots's fan drive, includes equalizing basin (1), anaerobism pond (2), oxygen deficiency pond (3), good oxygen pond (4), two heavy ponds (5), flocculation reaction tank (6), flocculation sedimentation tank (7), clean water basin (8), sludge thickening pond (9), roots's fan (10) and central controller, characterized by:
the device is characterized in that a first air stripping device (11) is arranged in the adjusting tank (1), the water outlet end of the first air stripping device (11) is connected with an anaerobic tank (2), the anaerobic tank (2) is communicated with an anoxic tank (3) through a submerged pipe (14), the anoxic tank (3) is communicated with an aerobic tank (4) through a flat flow pipe A (15), the aerobic tank (4) is communicated with a secondary sedimentation tank (5) through an overflow pipe (16), the secondary sedimentation tank (5) is communicated with a flocculation reaction tank (6) through an overflow pipe B (17), the flocculation reaction tank (6) is communicated with a flocculation sedimentation tank (7) through a flat flow pipe C (18), and the flocculation sedimentation tank (7) is communicated with a clear water tank (8) through a flat flow pipe D (19);
a second gas stripping device (12) is arranged in the aerobic tank (4), and the second gas stripping device (12) is used for aeration and refluxing the nitrified activated sludge in the aerobic tank (4) to the anoxic tank (3);
a third air-lifting device (24) and a fourth air-lifting device (23) are arranged in the secondary sedimentation tank (5), the third air-lifting device (24) is used for returning part of activated sludge to the anoxic tank (3), and the fourth air-lifting device (23) is used for discharging sludge at the bottom of the secondary sedimentation tank (5) into a sludge concentration tank (9);
a gas stirring device (13) is arranged in the flocculation reaction tank (6);
a fifth air stripping device (26) is arranged in the flocculation sedimentation tank (7), and the fifth air stripping device (26) is used for discharging sludge at the bottom of the flocculation sedimentation tank (7) into a sludge concentration tank (9);
the roots blower (10) is used for driving the first stripping device (11), the second stripping device (12), the gas stirring device (13), the third stripping device (24), the fourth stripping device (23) and the fifth stripping device (26), and an output air pipe of the roots blower (10) is respectively connected with the first stripping device (11), the second stripping device (12), the gas stirring device (13), the third stripping device (24), the fourth stripping device (23) and the fifth stripping device (26).
2. The Roots blower drive-based sewage treatment station conveying system as set forth in claim 1, wherein: the first air lifting device (11) comprises an air inlet pipe (1101), an exhaust pipe (1102), a first vertical pipe (1131), a second vertical pipe (1132), an inlet pipe A (1105), a drain pipe A (1106) and a diving pipe (1103), wherein the diving pipe (1103) and the inlet pipe A (1105) are both arranged below the liquid level, two ends of the diving pipe (1103) are respectively connected with the first vertical pipe (1131) and the second vertical pipe (1132) which are vertically arranged, the upper end of the first vertical pipe (1131) is respectively connected with the air inlet pipe (1101) and the exhaust pipe (1102), and the upper end of the second vertical pipe (1132) is connected with the drain pipe A (1106);
the middle part of the diving pipe (1103) is provided with a one-way valve B (1108), and the one-way valve B (1108) is electrically connected with the output end of the central controller and is used for controlling the sewage to flow from the diving pipe (1103) to the second standpipe (1132) in a one-way manner;
one end of the water inlet pipe A (1105) is connected with one end of the diving pipe (1103), the other end of the water inlet pipe A (1105) is provided with a one-way valve A (1107), and the one-way valve A (1107) is electrically connected with the output end of the central controller and is used for controlling sewage to flow from the water inlet pipe A (1105) to the diving pipe (1103) in a one-way manner;
the other end of the air inlet pipe (1101) is connected with an output air pipe of the Roots blower (10), an electromagnetic valve A (1109) is arranged on the air inlet pipe (1101), and the electromagnetic valve A (1109) is electrically connected with the output end of the central controller and used for controlling the on-off of the air inlet pipe (1101);
the exhaust pipe (1102) is provided with an electromagnetic valve B (1110), and the electromagnetic valve B (1110) is electrically connected with the output end of the central controller and is used for controlling the on-off of the exhaust pipe (1102).
3. The sewage treatment station conveying system based on Roots blower drive as claimed in claim 1, wherein: the second stripping device (12), the third stripping device (24), the fourth stripping device (23) and the fifth stripping device (26) are respectively a slurry mixture stripping pump, and the slurry mixture stripping pump comprises a transverse water inlet pipe B (1202) and a vertical lift pipe (1204), and is characterized in that: the side wall of the water inlet pipe B (1202) is provided with water inlet holes (1203) at intervals, and the middle part of the water inlet pipe B (1202) is communicated with the lower end of the lift pipe (1204); the side wall of the lower part of the liquid lifting pipe (1204) is connected with a plurality of air pipes (1201), the air inlet end of each air pipe (1201) is connected with the output air pipe of the Roots blower (10), the air outlet end of each air pipe (1201) is communicated with the liquid lifting pipe (1204) and is positioned below the liquid level, and the air outlet end of each air pipe (1201) is provided with an aeration plate (1206);
an electric proportional control valve (1215) is arranged at the air inlet end of the air pipe (1201), and the electric proportional control valve (1215) is electrically connected with the output end of the central controller and is used for controlling the opening and air volume of the air pipe (1201); the tail end of the riser pipe (1204) is provided with a gas-liquid separation tank (1208), and the gas-liquid separation tank (1208) is positioned above the liquid level.
4. The Roots blower drive-based sewage treatment station conveying system as claimed in claim 3, wherein: the top of gas-liquid separation case (1208) is provided with gas vent (1209), and the exit end of gas-liquid separation case (1208) is provided with outlet pipe (1210) to be provided with liquid level sensor (1211) and lower liquid level sensor (1212) respectively in the lateral wall upper end of gas-liquid separation case (1208), go up liquid level sensor (1211), lower liquid level sensor (1212) respectively with the input electric connection of central controller for inject the liquid level in gas-liquid separation case (1208).
5. The Roots blower drive-based sewage treatment station conveying system as set forth in claim 4, wherein: and a valve (1213) is arranged on the water outlet pipe (1210) close to the water outlet.
6. The Roots blower drive-based sewage treatment station conveying system as claimed in claim 3, wherein: the exhaust ends of the air pipes (1201) are consistent in height and are uniformly distributed on the side wall of the lift pipe (1204).
7. The Roots blower drive-based sewage treatment station conveying system as set forth in claim 3, wherein: the aeration plate (1206) covers the exhaust end of the air pipe (1201), and a plurality of air holes are formed in the aeration plate (1206).
8. The Roots blower drive-based sewage treatment station conveying system as set forth in claim 1, wherein: the gas stirring device (13) comprises a soaking pipe (1301), the soaking pipe (1301) is integrally of an annular tubular structure, exhaust holes (1302) are evenly distributed in two sides of the pipe wall of the soaking pipe (1301), the soaking pipe (1301) is connected with an output air pipe of the Roots blower (10) through an air inlet pipe B (1303), and a valve B (1304) is arranged on the air inlet pipe B (1303) and used for controlling the on-off of the air inlet pipe B (1303).
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| CN202220798191.0U CN216998084U (en) | 2022-04-08 | 2022-04-08 | Sewage treatment station conveying system based on roots fan drive |
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| CN202220798191.0U CN216998084U (en) | 2022-04-08 | 2022-04-08 | Sewage treatment station conveying system based on roots fan drive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620903A (en) * | 2022-04-08 | 2022-06-14 | 河南天原智控环保科技有限公司 | Sewage treatment station conveying system based on Roots blower drive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620903A (en) * | 2022-04-08 | 2022-06-14 | 河南天原智控环保科技有限公司 | Sewage treatment station conveying system based on Roots blower drive |
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