CN201850643U - Closure deep well self-siphon hydraulic dredging device - Google Patents

Closure deep well self-siphon hydraulic dredging device Download PDF

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Publication number
CN201850643U
CN201850643U CN2010202702858U CN201020270285U CN201850643U CN 201850643 U CN201850643 U CN 201850643U CN 2010202702858 U CN2010202702858 U CN 2010202702858U CN 201020270285 U CN201020270285 U CN 201020270285U CN 201850643 U CN201850643 U CN 201850643U
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China
Prior art keywords
siphon
pipe
deep well
bend
inlet pipe
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Expired - Lifetime
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CN2010202702858U
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Chinese (zh)
Inventor
周永潮
张仪萍
陈勇民
张土乔
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN2010202702858U priority Critical patent/CN201850643U/en
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Publication of CN201850643U publication Critical patent/CN201850643U/en
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Abstract

The utility model discloses a closure deep well self-siphon hydraulic dredging device comprising a siphon water inlet pipe, a siphon bent pipe and a siphon drain pipe, wherein a water inlet of the siphon water inlet pipe is provided with a suction port; the siphon water inlet pipe is provided with a siphon damage hole; and the siphon bent pipe is provided with a siphon auxiliary pipe and a siphon suction pipe. With the device, the original continuous small flow can be changed into intermittent and instantaneous large flow, and the flow states of a closure deep well and a upstream pressure-bearing pipe can be changed so as to enable suspended matters in the sewage to be hard to settle and enable the sludge settled on a pipe bottom and a well bottom to be washed and wrapped to enter a closure main pipe; and the dredging device is simple in structure and convenient in installation, has better dredging and sludge prevention effects, and does not need power.

Description

A kind of intercepting deep well self-siphoning hydraulic desilting device
Technical field
The utility model relates to catchpit hydraulic desilting device field, especially relates to a kind of intercepting sewer absolute altitude greater than the combined system system intercepting deep well self-siphoning hydraulic desilting device under the soil pipe situation.
Background technology
The shutoff type combined drainage system is delivered to Wastewater Treatment Plant's processing with dry flow sewage and initial rainfall runoff by the main that dams, the rainfall runoff that surpasses interception ratio then enters water body by the overflow weir overflow, therefore, the shutoff type combined drainage system is that a kind of investment economizes, and environmental benefit is drainage system preferably.Yet because combined drainage system needs to collect simultaneously to carry dry flow sewage and rainfall runoff, caliber is bigger, under the drought stream operating mode, dry flow sewage is difficult to reach the requirement of design minimum flow velocity, and suspended materials a large amount of in the sewage very easily are deposited in pipeline and the inspection shaft, causes the pipeline alluvial to be stopped up.And when rainfall, a large amount of rainfall runoff imports combined drainage system, washes away and sweeps along the deposit overflow to enter receiving water body, and huge instantaneous pollution impact load very easily causes water quality to deceive smelly deterioration.Therefore, the deposit problem is one of drawback of combined drainage system.Especially be higher than intercepting deep well when becoming a mandarin soil pipe when the intercepting sewer absolute altitude, dry flow sewage enters intercepting sewer by the upward flow overflow, make a large amount of alluvial of suspended organic matter in the dry flow sewage in the intercepting deep well shaft bottom, make that into the organic suspension thing content of Sewage Plant is extremely low.
The sweep-out method of traditional combined drainage system deposit mainly adopts mechanical desilting method, high-pressure water jet desilting method, water to wash away the desilting method, though these methods adopt special-purpose desilting equipment, improved desilting efficiency data, but equipment cost height, operating cost is big, can't fundamentally solve pipeline alluvial problem.In addition, manually draw the main dredging method that method also is some urban discharging pipelines clearly, artificial dredging method efficient is low, and work under bad environment also can't effectively ensure the normal operation of combined drainage system.At the deficiency of machinery and artificial dredging method, also researched and developed some novel hydropower automatic desilting devices abroad accordingly, as (Hai Jiesi), (extra large clean match) and (bass spy) vacuum is washed away system etc., but these auto hydraulic desiltings can't be applicable to flowing full pressure-bearing pipeline section or need power-equipment, therefore, also can't popularize in an all-round way.
Summary of the invention
In order to overcome the alluvial problem of present combined system intercepting deep well and upstream pressure-bearing pipeline section, the utility model provides a kind of self-siphoning hydraulic desilting device of combined system intercepting deep well, the dominant mechanism of this device is that the low discharge that will originally continue changes over instantaneous big flow intermittently, change the fluidised form of intercepting deep well and upstream pressure-bearing pipeline section, make the suspension in the sewage be difficult to sedimentation, also make the mud that is deposited in the pipe end, shaft bottom can be washed and coerced into the main that dams, deliver to Wastewater Treatment Plant and handle.
A kind of combined system system intercepting deep well self-siphoning hydraulic desilting device comprises siphon inlet pipe, siphon bend and siphon drainage pipe.The water inlet of siphon inlet pipe bottom is equipped with pump orifice, and pump orifice and horizontal direction are 45~60 ° of angles, and pump orifice is mainly used in and improves suction flow field, bottom, promotes the removing of shaft bottom mud.
The siphon inlet pipe is provided with the siphon destructive hole, and the absolute altitude in siphon destructive hole can determine that when water level was reduced to absolute altitude place, siphon destructive hole, siphon destructive avoided producing lasting siphon according to primary rainbow water absorption and siphon generation frequency optimization.
The two ends of siphon bend connect siphon inlet pipe and siphon drainage pipe respectively, the installed inside of siphon bend has auxiliary siphon tube, the position of connected entrance between auxiliary siphon tube and the siphon bend on siphon bend is near this side of siphon inlet pipe, this connected entrance is a funnel type, can improve the drowning efficient of auxiliary siphon tube, help the effect of bleeding of siphon exhaust tube, promote the moment of siphon to produce, it highly is lower than the top of siphon bend inner arc, also anti-blocking guard can be installed on the connected entrance, prevent that floating thing from stopping up auxiliary siphon tube.The outside of siphon bend is equipped with the siphon exhaust tube, and described siphon exhaust tube one end connects the siphon bend outside, and the other end of siphon exhaust tube is connected to the auxiliary siphon tube upper end near the siphon bend place.Siphon exhaust tube and auxiliary siphon tube all are used to assist the generation of siphon, avoid when low discharge, producing weir flow in the pipe, utilize the effect of bleeding of the draining generation of auxiliary siphon tube,, assist to produce fast siphon by the air on siphon exhaust tube suction siphon bend top.
During practical engineering application, the siphon inlet pipe is installed in the catch basin that connects the upstream soil pipe indoor, it is indoor that siphon drainage pipe, auxiliary siphon tube and siphon exhaust tube are installed in the catchpit limit that is connected the main that dams, and siphon inlet pipe and siphon drainage pipe are communicated with by siphon bend.The sewage that continues low discharge along with the upstream sewage conduct flows into, the chamber water level raises gradually in the catchpit, water level in the siphon inlet pipe also rises gradually, when water level rises to auxiliary siphon tube upper end nozzle position, water continues to wander from auxiliary siphon tube, aspirate the air on siphon bend top simultaneously by the siphon exhaust tube, after causing certain vacuum, siphon produces, and the instantaneous big flow suction of the water in shaft bottom is entered chamber, intercepting deep well limit, chamber drawdown in the intercepting deep well, after water level is reduced to the siphon destructive hole, siphon destructive, siphonic process stops, and rises to next siphonic process gradually until water level and produces.
The water-head and the self-siphoning hydraulic desilting device section area of chamber and chamber, catchpit limit are relevant in the anti-silt effect of the desilting of self-siphoning hydraulic desilting device and the catchpit, during design and installation, can calculate the section area of rational self-siphoning hydraulic desilting device according to both water-heads, to reach best dredging effect.
Under the rainfall operating mode, because the inflow upstream soil pipe of a large amount of rainfall runofves in upstream, the siphon flow that surpasses far away, indoor water level rises rapidly in the intercepting deep well, enter overflow well after surpassing overflow weir, directly be discharged into receiving water body by row river pipe, therefore, the installation of self-siphoning hydraulic desilting device does not produce any influence to draining safety in rainy season.
Compare with existing hydraulic desilting device, the utlity model has following advantage and good effect:
1, this apparatus structure is simple, and cost is lower, need not power, and maintenance is convenient;
2, this device can be removed the alluvial of intercepting deep well bottom and upstream pressure-bearing pipeline section, simultaneously, by the intermittent flow of current, prevents the alluvial of suspension in intercepting deep well and pressure-bearing pipeline section in the sewage.
Description of drawings
Fig. 1 is the structural representation of the utility model device.
Fig. 2 is the auxiliary siphon tube of the utility model device and the local enlarged diagram of the connected entrance between the siphon bend.
Fig. 3 is the scheme of installation of the utility model device in intercepting deep well.
Description of reference numerals is as follows:
1 siphon inlet pipe, 2 siphon destructive holes, 3 siphon exhaust tubes
4 auxiliary siphon tubes 5 chamber, main 6 catchpit limit of damming
8 overflow wells, 9 overflow weirs in chamber in 7 catchpits
11 upstream soil pipes, 12 siphon bends are managed in 10 row rivers
13 pump orifices, 14 siphon drainage pipes, 15 anti-blocking guards.
The specific embodiment
As shown in Figure 1, combined system of the present utility model system intercepting deep well self-siphoning hydraulic desilting device, comprise siphon inlet pipe 1, siphon destructive hole 2, siphon exhaust tube 3, auxiliary siphon tube 4, pump orifice 13, siphon drainage pipe 14 and siphon bend 12, auxiliary siphon tube 4 is 15~25cm with the caliber of siphon exhaust tube 3, less than the caliber of siphon inlet pipe 1 and siphon drainage pipe 14.Pump orifice 13 is installed on the water inlet of siphon inlet pipe 1 bottom, with level to being 45 °, the setting of pump orifice 13 is mainly used in and improves suction flow field, bottom, promotes the removing of shaft bottom mud.Auxiliary siphon tube 4 is installed in siphon bend 12 inboards, near siphon inlet pipe 12 1 sides.Connected entrance between auxiliary siphon tube 4 and the siphon bend 12 adopts funnel type, can improve the drowning efficient of auxiliary siphon tube 4, help the effect of bleeding of siphon exhaust tube 3, promote the moment of siphon to produce, anti-blocking guard 15 is installed on it, prevents that floating thing from stopping up auxiliary siphon tube 4.One end of siphon exhaust tube 3 is communicated with siphon bend 12 outsides, the other end is communicated with near siphon bend 12 places with auxiliary siphon tube 4 upper ends, siphon exhaust tube 3 and auxiliary siphon tube 4 all are used to assist the generation of siphon, avoid when low discharge, producing weir flow in the pipe, the effect of bleeding that draining by auxiliary siphon tube 4 produces, utilize the air on siphon exhaust tube 3 suction siphon bends 12 tops, assist to produce fast siphon.Siphon destructive hole 2 is installed on the siphon inlet pipe 1, and when water level was reduced to 2 absolute altitude places, siphon destructive hole, siphon destructive avoided producing lasting siphon, and the absolute altitude in siphon destructive hole 2 can be determined according to primary rainbow water absorption and siphon generation frequency optimization.
As shown in Figure 3, siphon inlet pipe 1 is installed in the catchpit that connects upstream soil pipe 11 in the chamber 7, siphon drainage pipe 14, auxiliary siphon tube 4 and siphon exhaust tube 3 are installed in the chamber, catchpit limit 6 that is connected the main 5 that dams, bottom 10~the 20cm of the setting height(from bottom) of pump orifice 13 chamber 7 in the distance catchpit, the port of export of siphon drainage pipe 14 need be submerged in the water, the mouth of pipe is 5~10cm below the water surface, and siphon inlet pipe 1 and siphon drainage pipe 14 are communicated with by siphon bend 12.Under the drought stream operating mode, dry flow sewage continues to flow into chamber 7 in the catchpit with low discharge, chamber 7 and siphon inlet pipe 1 interior water level rise gradually in the catchpit, when water level rose to auxiliary siphon tube 4 tops, auxiliary siphon tube 4 began to fall into water, by siphon exhaust tube 3, lasting the falling into water of auxiliary siphon tube 4 can be taken the gases in the siphon bend 12 away, because siphon drainage pipe 14 ports of export are submerged in the water, cause the siphon bend 12 inner certain vacuum degree that form, impelled the formation of siphonage in the siphon bend 12.After siphonage produced, siphon inlet pipe 1 produced swabbing action by 13 pairs of shaft bottoms of pump orifice, has promoted the removing of bottom sludge, simultaneously, had also strengthened the flow velocity in the upstream soil pipe 11, had prevented the sedimentation of suspension in the upstream soil pipe 11 and hardened.After siphon effect produces, water level in the catchpit in the chamber 7 descends rapidly, when water level is reduced to siphon destructive hole 2 absolute altitudes when following, siphonage is destroyed, siphon finishes, and along with 7 water levels of chamber in the intercepting deep well rise once more, siphon forms again, go round and begin again the desilting of 7 shaft bottoms, chamber and upstream soil pipe 11 and anti-silt the in the assurance intercepting deep well.The water-head and the self-siphoning hydraulic desilting device section area of chamber 7 and chamber, catchpit limit 6 are relevant in the anti-silt effect of the desilting of self-siphoning hydraulic desilting device and the catchpit, during design and installation, can calculate the section area of rational self-siphoning hydraulic desilting device according to both water-heads, to reach best dredging effect.
Under the rainfall operating mode, because a large amount of rainfall runofves in upstream flow into upstream soil pipe 11, the siphon flow that surpasses far away, chamber 7 interior water levels rise rapidly in the intercepting deep well, enter overflow well 8 after surpassing overflow weir 9, directly be discharged into receiving water body by row river pipe 10, therefore, the installation of self-siphoning hydraulic desilting device does not produce any influence to draining safety in rainy season.

Claims (5)

1. an intercepting deep well self-siphoning hydraulic desilting device comprises siphon inlet pipe (1), siphon bend (12) and siphon drainage pipe (14), it is characterized in that: the two ends of siphon bend (12) connect siphon inlet pipe (1) and siphon drainage pipe (14) respectively; The water inlet of described siphon inlet pipe (1) bottom is equipped with pump orifice (13), and siphon inlet pipe (1) is provided with siphon destructive hole (2); The installed inside of described siphon bend (12) has auxiliary siphon tube (4), connected entrance between auxiliary siphon tube (4) and the siphon bend (12) is near siphon inlet pipe (12) one sides, the outside of siphon bend (12) is equipped with siphon exhaust tube (3), described siphon exhaust tube (3) one ends connect siphon bend (12) outside, and the other end is connected to auxiliary siphon tube (4) upper end and locates near siphon bend (12).
2. intercepting deep well self-siphoning hydraulic desilting device according to claim 1 is characterized in that: described pump orifice (13) is 45~60 ° of angles with horizontal direction.
3. intercepting deep well self-siphoning hydraulic desilting device according to claim 1 is characterized in that: described connected entrance is a funnel type.
4. according to claim 1 or 3 described intercepting deep well self-siphoning hydraulic desilting devices, it is characterized in that: anti-blocking guard (15) is installed on the described connected entrance.
5. intercepting deep well self-siphoning hydraulic desilting device according to claim 1 is characterized in that: described connected entrance is lower than the top of siphon bend (12) inner arc.
CN2010202702858U 2010-07-23 2010-07-23 Closure deep well self-siphon hydraulic dredging device Expired - Lifetime CN201850643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2010202702858U CN201850643U (en) 2010-07-23 2010-07-23 Closure deep well self-siphon hydraulic dredging device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101892705A (en) * 2010-07-23 2010-11-24 浙江大学 Intercepting deep well self-siphoning hydraulic desilting device
CN104179248A (en) * 2014-09-02 2014-12-03 洼石环境工程(上海)有限公司 Vacuum flushing dredging system of drainage pipe network
CN104895133A (en) * 2015-07-03 2015-09-09 李振汉 High-power river dredging ship with square hull
CN107119758A (en) * 2017-04-24 2017-09-01 河海大学 A kind of building rain sewage separation case

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101892705A (en) * 2010-07-23 2010-11-24 浙江大学 Intercepting deep well self-siphoning hydraulic desilting device
CN104179248A (en) * 2014-09-02 2014-12-03 洼石环境工程(上海)有限公司 Vacuum flushing dredging system of drainage pipe network
CN104179248B (en) * 2014-09-02 2015-12-30 洼石环境工程(上海)有限公司 A kind of vacuum of drainage pipeline networks rinses desilting system
CN104895133A (en) * 2015-07-03 2015-09-09 李振汉 High-power river dredging ship with square hull
CN107119758A (en) * 2017-04-24 2017-09-01 河海大学 A kind of building rain sewage separation case

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GR01 Patent grant
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AV01 Patent right actively abandoned

Granted publication date: 20110601

Effective date of abandoning: 20120919