CN102926455A - Partial-vacuum closed drainage system and control method of drainage system - Google Patents
Partial-vacuum closed drainage system and control method of drainage system Download PDFInfo
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- CN102926455A CN102926455A CN2012104588009A CN201210458800A CN102926455A CN 102926455 A CN102926455 A CN 102926455A CN 2012104588009 A CN2012104588009 A CN 2012104588009A CN 201210458800 A CN201210458800 A CN 201210458800A CN 102926455 A CN102926455 A CN 102926455A
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Abstract
The invention discloses a partial-vacuum closed drainage system and a control method the drainage system. The drainage system comprises sanitary ware, a closed sewage collection box and a sewage draining machine unit, wherein the sanitary ware is mounted in a toilet; the closed sewage collection box and the sewage draining machine unit are mounted in an equipment room; the sanitary ware is connected with an inlet of the closed sewage collection box by a sewage draining pipeline I; an outlet of the closed sewage collection box is connected with the sewage draining machine unit by a sewage draining pipe II; the closed sewage collection box is provided with a vent pipeline III communicated with the outside; and the sewage draining machine unit is provided with an electric control unit. According to the drainage system and the control method, gas in the toilet is discharged to a municipal sewage draining pipe network through the closed sewage collection box and the sewage draining machine unit by controlling an electric valve and opening and closing of the electric valve, and utilizing the self-absorption function of a rotary cam pump; and the air quality of the toilet can be improved greatly in case that that underground ventilation is not smooth.
Description
Technical field
The invention belongs to health blowdown field, relate to a kind of drainage system, particularly use partial vacuum closed drainage system and control method thereof between a kind of subway sanitary.
Background technology
The drainage system of present domestic subway communal bathroom generally is gravity drainage system, and namely station layer arranges a special sewage pump house in subway, builds the settling tank of concrete structure in the sewage pump house.Ight soil dirt in the washroom and sewage rely on washing pressure and action of gravitation to flow into settling tank.Treat that the sewage in the settling tank is stored into when setting liquid level, the submersible sewage pump in the settling tank starts, and the sewage that stores up in the pond is drained into city planting ductwork.
This toilet drainage system has following deficiency:
The settling tank of concrete structure can't be accomplished Seal Design when doing maintenance and design with manhole, cause the foul smell of fecal sewage in the settling tank excessive, mosquitos and flies grows, pathogen transmission, has caused great pollution for sewage pump house and environment on every side thereof.
Because subway communal bathroom visitors flowrate is large, the peopleware that goes to toilet differs, cause the submersible sewage pump that is installed in the settling tank often to be blocked by fabrics such as some silk stocking, the maintenance personal has to put on vest and enters and stop up cleaning in the settling tank, and maintenance personal's working environment is extremely abominable.
When the performance of submersible sewage pump had determined each blowdown, the retaining of sewage of certain liquid level all will be arranged at settling tank bottom, retains for a long time, can produce sludgd deposition, and therefore, the maintenance personal needs regularly to carry out desilting to the sediment in the settling tank and processes.
Therefore, this drainage system exists the sewage pump house environment when practical application abominable, a series of serious problems of maintenance personal's work under bad environment.
Except above-mentioned gravity drainage system, over the past two years domestic subway also successively installation some novel drainage systems that certain scientific and technological content is arranged.Although these drainage systems also can address the above problem, also there are some shortcomings.Such as the free from admixture filter, the clogging that often occurs has affected the use of closet; When subway ventilation is not smooth, can't solve the Peculiar Smell of washroom; The container bottom that stores sewage can amass silt, need to regularly carry out desilting and process.
Summary of the invention
The objective of the invention is the deficiency for existing drainage system existence between domestic subway sanitary, a kind of partial vacuum closed drainage system and control method thereof are provided.
The technical solution that the present invention adopts is as follows:
Partial vacuum closed drainage system, comprise sanitaryware, the closed sludge collecting box, the blowdown unit, described sanitaryware are installed in the washroom, closed sludge collecting box and blowdown unit are installed in the equipment room, and described sanitaryware are connected with the entrance of closed sludge collecting box by the blowoff line I, and described closed sludge collecting box outlet is connected to the blowdown unit by the blow-off pipe II; Be provided with and the outdoor vent line III that communicates at described closed sludge collecting box, be provided with ECU at the blowdown unit.
Described closed sludge collecting box is the stainless steel welding production.
Described blowdown unit comprise two have self-suction function again can emission gases rotary lobe pump.
I is provided with electric control valve on described logical organ pipe road.
Be provided with the vent line IV that communicates with the washroom in described blowoff line I.
Bottom at described closed sludge collecting box also is provided with cell structure, is provided with handle at described cell structure.
Be provided with liquid-level switch I and liquid-level switch II in the inside of described closed sludge collecting box, two liquid-level switches link to each other with ECU respectively, the startup operation of liquid-level switch I control rotary lobe pump, and the liquid-level switch II links to each other with the warning device of ECU.
Described ECU is provided with the long distance control system interface, described long distance control system interface and long distance control system communication.
The control method of partial vacuum closed drainage system comprises the steps:
Does step 1 judge that the liquid-level switch II has signal? if have, judge whether the liquid-level switch I has signal, forwards step 2 to, if do not have, forwards step 6 to;
Do you if step 2 liquid-level switch I has signal, judge that then the rotary lobe pump I moves? forward step 3 to, if the liquid-level switch I there is not signal, then the alarm indication of liquid-level switch I forwards step 5 to;
If the operation of step 3 rotary lobe pump I, rotary lobe pump I fault alarm show, if do not have operation, forward step 4 to;
Does step 4 rotary lobe pump II operation setting-up time T2 judge that the liquid-level switch II has signal? if have, rotary lobe pump II (14) continues operation, if do not have, forwards step 8 to;
Does step 5 rotary lobe pump II operation setting-up time T2 judge that the liquid-level switch II has signal? if have, system failure alarm indication if do not have, forwards step 8 to;
Is step 6 judged in the sludge collecting box whether signal of liquid-level switch I? if signal is arranged, two lobe pump number of run startups are differentiated, forward step 7 to, if do not have signal, forward step 8 to;
The operation of step 7 rotary lobe pump I reaches setting-up time T1, forwards step 8 to; The operation of rotary lobe pump II reaches setting-up time T2, forwards step 8 to;
The present invention has adopted the closed sludge collecting box to be used for temporarily storing up fecal sewage, the trap sealing is arranged between sludge collecting box and the sanitaryware, the vent line I of sludge collecting box causes outdoor, other all structures are closed and connect, sewage and foul smell in the sludge collecting box are isolated in the sludge collecting box fully, can not cause any pollution to the environment around washroom and the equipment room.
The present invention has adopted the closed sludge collecting box to be used for temporarily storing up fecal sewage, the trap sealing is arranged between sludge collecting box and the sanitaryware, the vent line III of sludge collecting box causes outdoor, other all structures are closed and connect, sewage and foul smell in the sludge collecting box are isolated in the sludge collecting box fully, can not cause any pollution to the environment around washroom and the equipment room.
The invention has the beneficial effects as follows: by the switching of control electric control valve I and electric control valve II, utilize the self-suction function of rotary lobe pump, make the gas in the washroom drain into municipal blowdown pipe network by closed sludge collecting box and blowdown unit.In the not smooth situation of subway ventilation, can greatly improve the air quality of washroom.
The present invention installs portable lattice structure in sludge collecting box, grid is used for impurity screening, reduces the generation of pump chamber damage and pipeline blockage; Portable structure can maintain easily personnel's cleaning.
The outlet of sewer of sludge collecting box adopts plug in construction among the present invention, and collaborative casing automatic cleaning function can not stockpile the what thing at bottom half, does not need the attendant to carry out regular desilting and processes.
Description of drawings
Fig. 1 is drainage system figure of the present invention;
Fig. 2 is sludge collecting box structure chart of the present invention;
Fig. 3 is blowdown unit structure chart of the present invention;
Fig. 4 system control chart;
Among the figure: I, blowoff line I, II, blowoff line II, III, vent line III, IV, vent line IV, 1, sanitaryware, 2, the closed sludge collecting box, 3, blowdown unit, 4, sewage inlet, 5, outlet of sewer, 6, outlet pass, 7, electrically operated valve II, 8, electric control valve I, 9, cell structure, 10, handle, 11, the liquid-level switch I, 12, liquid-level switch II, 13, rotary lobe pump I, 14, the rotary lobe pump II, 15, the long distance control system interface, 16, long distance control system, 17 ECUs, 18 excrement pond interfaces, 19 electric control valve III.
The specific embodiment
As such as Fig. 1, Fig. 2, shown in Figure 3, system of the present invention comprises sanitaryware 1, closed sludge collecting box 2, blowdown unit 3, sanitaryware 1 are installed in the washroom, closed sludge collecting box 2 and blowdown unit 3 are installed in the equipment room, and described sanitaryware 1 are connected with the entrance of closed sludge collecting box 2 by the blowoff line I, and the outlet of sewer 5 of described closed sludge collecting box 2 is connected to blowdown unit 3 by the blow-off pipe II; Be provided with and the outdoor vent line III that communicates at described closed sludge collecting box 2, be provided with ECU 17 and excrement pond interface 18 at blowdown unit 3, be provided with long distance control system interface 15 at ECU 17, long distance control system connects 15 and connects long distance control system 16.
The sewage of sanitaryware 1 discharging is under the effect of the impact of flushing water and self gravitation, flow into closed sludge collecting box 2 through the blowoff line I, electric control valve II 7 is in normally open (the vent line III is unimpeded) at this moment, electric control valve I 8 is in normally off (vent line IV partition), sewage flows into closed sludge collecting box 2, closed sludge collecting box 2 interior unnecessary foul smell drain into outdoor through the vent line III, be provided with the pipeline that is connected to water service pipe at closed sludge collecting box 2, clear water enters closed sludge collecting box 2 by outlet pass 6, is provided with electric control valve III 19 at water-filled pipe.
When closed sludge collecting box 2 interior sewage store up to liquid-level switch 11, rotary lobe pump I 13 operations in the blowdown unit 3, meanwhile, electric control valve II 7 is closed (vent line III partition), electric control valve I 8 is opened (the vent line IV is unimpeded), rotary lobe pump I 13 is in blowdown, and the gas in the washroom is inhaled into closed sludge collecting box 2 through the vent line IV.After dirt in the closed sludge collecting box 2 was all emptying, 13 delay working a period of times of rotary lobe pump I, the gas in this moment washroom passes through closed sludge collecting box 2 and rotary lobe pump I 13 drains into municipal blowdown pipe network.The stopping of rotary lobe pump I 13 controlled by the time.
Behind the elapsed time T1, electric control valve II 7 is opened, and electric control valve I 8 is closed, and rotary lobe pump I 13 quits work, and system finishes drainage works one time.When treating that liquid-level switch I 11 has signal again, 14 operations (two platform convex wheel pump alternations) of rotary lobe pump II, system repeats the above-mentioned course of work again.
Be provided with two liquid-level switches in the closed sludge collecting box 2.Liquid-level switch I 11 is used for controlling the startup of rotary lobe pump.Liquid-level switch 12 is used for doing controlling alarm and detection.When liquid-level switch II 12 has signal, if this moment, lobe pump did not move work, liquid-level switch I 11 faults are described then, the system alarm indicator lamp is bright, shows liquid-level switch I 11 faults and by remote monitoring interface 15 fault-signal is transferred on the manual board; When if liquid-level switch II 12 has signal, if lobe pump is in running status, at this moment, this platform convex wheel pump out of service, start another platform convex wheel pump, after a period of time, if liquid-level switch II 12 no signals, then the system alarm indicator lamp is bright, shows the lobe pump fault that is stopped and by the remote monitoring interface fault-signal is transferred to manual board; If after a period of time, liquid-level switch II 12 still has signal, and then the system alarm indicator lamp is bright, the display system fault, and this moment, system quit work, and system failure signal is transferred to manual board by the remote monitoring interface.During the system failure, this washroom forbidding.
If liquid-level switch I 11 has fault, then system's cancellation is adopted the startup of liquid-level switch 12 control lobe pumps to the signals collecting of liquid-level switch I 11.
If wherein a platform convex is taken turns failure of pump, then system only controls another platform convex wheel pump work, and this moment is without two pump alternate run operating modes.After the lobe pump fault is got rid of, enter again the alternate run operating mode.
System is provided with cleans the sludge collecting box function, and system's control bath electromagnetic valve II 7 is opened, and airtight sludge collecting box 2 is washed, and after a period of time, bath electromagnetic valve I 8 is closed, and flushing water is discharged in lobe pump work.
As shown in Figure 2, be provided with portable cell structure 9 in sewage inlet 4 sides, airtight sludge collecting box 2 bottoms, follow sewage and the foreign material that come, such as silk stocking, key, mobile phone, coin etc. behind grid filtration, foreign material are retained in the grid, and sewage can flow freely inside and outside grid.During blowdown, sewage can be discharged by blowoff line, and foreign material are isolated in the grid, have increased the application life of pump.Be provided with grid handle 10 at described portable cell structure 9, be provided with magnetic stripe in the grid, be used for adsorbing metal impurity.
As shown in Figure 4, the control method that this system is concrete is as follows:
Does step 1 judge that liquid-level switch II 12 has signal? if have, judge whether liquid-level switch I 11 has signal, forwards step 2 to, if do not have, forwards step 6 to;
Do you if step 2 liquid-level switch I 11 has signal, judge that then rotary lobe pump I 13 moves? forward step 3 to, if liquid-level switch I 11 there is not signal, then liquid-level switch I 11 alarm indications forward step 5 to;
If 13 operations of step 3 rotary lobe pump I, rotary lobe pump I fault alarm shows, if do not have operation, forwards step 4 to;
Do step 4 rotary lobe pump II 14 operation setting-up time T2 judge that liquid-level switch II 12 has signal? if have, rotary lobe pump II 14 continues operation, if do not have, forwards step 8 to;
Does step 5 rotary lobe pump II operation setting-up time T2 judge that liquid-level switch II 12 has signal? if have, system failure alarm indication if do not have, forwards step 8 to;
Is step 6 judged in the sludge collecting box whether signal of liquid-level switch I 11? if signal is arranged, two lobe pump number of run startups are differentiated, forward step 7 to, if do not have signal, forward step 8 to;
13 operations of step 7 rotary lobe pump I reach setting-up time T1, forward step 8 to; 14 operations of rotary lobe pump II reach setting-up time T2, forward step 8 to;
Claims (10)
1. partial vacuum closed drainage system, it is characterized in that: comprise sanitaryware, the closed sludge collecting box, the blowdown unit, described sanitaryware are installed in the washroom, closed sludge collecting box and blowdown unit are installed in the equipment room, and described sanitaryware are connected with the entrance of closed sludge collecting box by the blowoff line I, and described closed sludge collecting box outlet is connected to the blowdown unit by the blow-off pipe II; Be provided with and the outdoor vent line III that communicates at described closed sludge collecting box, be provided with ECU at the blowdown unit.
2. partial vacuum as claimed in claim 1 closed drainage system, it is characterized in that: described closed sludge collecting box is the stainless steel welding production.
3. partial vacuum as claimed in claim 1 closed drainage system is characterized in that: described blowdown unit comprise two have self-suction function again can emission gases rotary lobe pump.
4. partial vacuum as claimed in claim 1 closed drainage system, it is characterized in that: I is provided with electric control valve on described logical organ pipe road.
5. partial vacuum as claimed in claim 1 closed drainage system is characterized in that: be provided with the vent line IV that communicates with the washroom in described blowoff line I.
6. partial vacuum as claimed in claim 1 closed drainage system is characterized in that: be provided with the vent line IV that communicates with the washroom in described discharge pipe line I.
7. partial vacuum as claimed in claim 1 closed drainage system, it is characterized in that: the bottom at described closed sludge collecting box also is provided with cell structure, is provided with handle at described cell structure.
8. partial vacuum as claimed in claim 1 closed drainage system, it is characterized in that: be provided with liquid-level switch I and liquid-level switch II in the inside of described closed sludge collecting box, two liquid-level switches link to each other with ECU respectively, the startup operation of liquid-level switch I control rotary lobe pump, the liquid-level switch II links to each other with the warning device of ECU.
9. partial vacuum as claimed in claim 1 closed drainage system, it is characterized in that: described ECU is provided with the long distance control system interface.
10. the control method of partial vacuum as claimed in claim 1 closed drainage system is characterized in that, comprises the steps:
Does step 1 judge that the liquid-level switch II has signal? if have, judge whether the liquid-level switch I has signal, forwards step 2 to, if do not have, forwards step 6 to;
Do you if step 2 liquid-level switch I has signal, judge that then the rotary lobe pump I moves? forward step 3 to, if the liquid-level switch I there is not signal, then the alarm indication of liquid-level switch I forwards step 5 to;
If the operation of step 3 rotary lobe pump I, rotary lobe pump I fault alarm show, if do not have operation, forward step 4 to;
Does step 4 rotary lobe pump II operation setting-up time T2 judge that the liquid-level switch II has signal? if have, the rotary lobe pump II continues operation, if do not have, forwards step 8 to;
Does step 5 rotary lobe pump II operation setting-up time T2 judge that the liquid-level switch II has signal? if have, system failure alarm indication if do not have, forwards step 8 to;
Is step 6 judged in the sludge collecting box whether signal of liquid-level switch I? if signal is arranged, two lobe pump number of run startups are differentiated, forward step 7 to, if do not have signal, forward step 8 to;
The operation of step 7 rotary lobe pump I reaches setting-up time T1, forwards step 8 to; The operation of rotary lobe pump II reaches setting-up time T2, forwards step 8 to;
Step 8 system enters holding state, finishes.
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| CN201210458800.9A CN102926455B (en) | 2012-11-15 | 2012-11-15 | Partial-vacuum closed drainage system and control method of drainage system |
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| CN201210458800.9A CN102926455B (en) | 2012-11-15 | 2012-11-15 | Partial-vacuum closed drainage system and control method of drainage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040794A (en) * | 2015-06-29 | 2015-11-11 | 杭州聚川环保科技有限公司 | Semi-vacuum drainage system |
| CN107460934A (en) * | 2017-08-25 | 2017-12-12 | 宁波中车时代传感技术有限公司 | Closed partial vacuum drainage |
| CN107558562A (en) * | 2017-09-07 | 2018-01-09 | 中国能源建设集团山西省电力勘测设计院有限公司 | Vacuum equipment positive displacement gravity flow continuous blow down system and its method for discharging pollution |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0841974A (en) * | 1994-07-26 | 1996-02-13 | Kajima Corp | Air pressure feed-drain system for underground sewage water and miscellaneous drainage |
| CN2832939Y (en) * | 2005-07-21 | 2006-11-01 | 南京贝特环保通用设备制造有限公司 | Integrated sewage lifting device of mini-sized sewage treatment station |
| CN201305913Y (en) * | 2008-10-30 | 2009-09-09 | 山东华腾环保科技有限公司 | Control system of subway vacuum washroom |
| CN201485959U (en) * | 2009-09-09 | 2010-05-26 | 中国铁道科学研究院节能环保劳卫研究所 | On-line vacuum drainage system |
| CN101942860A (en) * | 2010-10-22 | 2011-01-12 | 山东华腾环保科技有限公司 | Sewage collecting and discharging device |
| CN102296691A (en) * | 2011-07-11 | 2011-12-28 | 复旦大学 | Self-operated vacuum drainage system and control method thereof |
| CN203080689U (en) * | 2012-11-15 | 2013-07-24 | 山东华腾环保科技有限公司 | Half-vacuum closed-type drainage system |
-
2012
- 2012-11-15 CN CN201210458800.9A patent/CN102926455B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0841974A (en) * | 1994-07-26 | 1996-02-13 | Kajima Corp | Air pressure feed-drain system for underground sewage water and miscellaneous drainage |
| CN2832939Y (en) * | 2005-07-21 | 2006-11-01 | 南京贝特环保通用设备制造有限公司 | Integrated sewage lifting device of mini-sized sewage treatment station |
| CN201305913Y (en) * | 2008-10-30 | 2009-09-09 | 山东华腾环保科技有限公司 | Control system of subway vacuum washroom |
| CN201485959U (en) * | 2009-09-09 | 2010-05-26 | 中国铁道科学研究院节能环保劳卫研究所 | On-line vacuum drainage system |
| CN101942860A (en) * | 2010-10-22 | 2011-01-12 | 山东华腾环保科技有限公司 | Sewage collecting and discharging device |
| CN102296691A (en) * | 2011-07-11 | 2011-12-28 | 复旦大学 | Self-operated vacuum drainage system and control method thereof |
| CN203080689U (en) * | 2012-11-15 | 2013-07-24 | 山东华腾环保科技有限公司 | Half-vacuum closed-type drainage system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040794A (en) * | 2015-06-29 | 2015-11-11 | 杭州聚川环保科技有限公司 | Semi-vacuum drainage system |
| CN107460934A (en) * | 2017-08-25 | 2017-12-12 | 宁波中车时代传感技术有限公司 | Closed partial vacuum drainage |
| CN107460934B (en) * | 2017-08-25 | 2020-05-05 | 宁波中车时代电气设备有限公司 | Closed semi-vacuum sewage discharge system |
| CN107558562A (en) * | 2017-09-07 | 2018-01-09 | 中国能源建设集团山西省电力勘测设计院有限公司 | Vacuum equipment positive displacement gravity flow continuous blow down system and its method for discharging pollution |
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