CN201343462Y

CN201343462Y - Unpowered siphoning type decanter

Info

Publication number: CN201343462Y
Application number: CNU2008202251606U
Authority: CN
Inventors: 孟祥岩; 刘晓华; 高仕强; 吕锡臻
Original assignee: SHANDONG REACHEN ENVIRONMENTAL ENGINEERING Co Ltd
Current assignee: SHANDONG REACHEN ENVIRONMENTAL ENGINEERING Co Ltd
Priority date: 2008-12-11
Filing date: 2008-12-11
Publication date: 2009-11-11
Anticipated expiration: 2018-12-11

Abstract

The utility model discloses an unpowered siphoning type decanter, which relates to an installation for the supernatant fluid in a decanting reaction tank of a sewage treatment plant. When the sewage treatment plant adopts the technique of sequencing batch reactor, the supernatant fluid in the decanting reaction tank of the decanter is needed. The unpowered siphoning type decanter mainly comprises an exhaust valve (1), an exhaust tube (2), an upper syphon tube (3), extendable hoses (4), limiting supports (5), a lower siphon tube (6), a float (7), a siphoned flow generation switch (8), an air check switch (9), a lowest liquid level switch (10), a water-discharging main pipe (11), a highest decanted water level (12), a lowest decanted water level (13) and an air check switch-starting water level (14). The unpowered siphoning type decanter mainly depends on gravity and the siphon principles to decant water; the bottom of the lower siphon tube is provided with a section of U-shaped pipe lower than the water outlet; the water in the U-shaped pipe can never be discharged out, having a sealing effect; and the utility model has the advantages of no power consumption, low initial investment, low operation cost and high applicability.

Description

The unpowered siphonic decant device

Technical field

The utility model provides a kind of sewage disposal water-freeing arrangement, the water-freeing arrangement when mainly being applicable to the technical process such as CASS, ICEAS, DAT-IAT method of SBR technology.Belong to technical field of sewage.

Background technology

The principal pollutant of municipal effluent are organism, therefore adopt biochemical process at present both at home and abroad mostly.In biochemical process, activated sludge process and biological filter two big classes are arranged, the processing efficiency of biological filter is not high, and sanitary condition is relatively poor, and China has only municipal sewage plant, several biological filters, and activated sludge process accounts for the overwhelming majority.Activated sludge process has a variety of forms, most popular three classes that mainly contain: traditional activated sludge process, oxidation ditch, SBR technology, wherein oxidation ditch and SBR technology have become the first-selected technology of domestic middle or small sewage treatment.

Straining hydrophone is the most frequently used key equipment in the sewage treatment process such as CASS method, SBR method 1CEAS method.In the waste water and municipal sewage treatment of industries such as beer, food, beverage, pharmacy, obtained widespread use based on the technology of CASS method.

Sewage work's hydrophone of straining commonly used has screw rod rotary-type water decanter, siphonic decant device, pontoon type decanting device at present.Existing siphonic decant device is because the bad siphon measure of control, and underwater portion sealing is not very tight, causes forming siphon, because design reasons can't guarantee at the uniform velocity to strain water, not have effectively to control the method for straining the water yield simultaneously.

The utility model content

The purpose of the utility model unpowered siphonic decant device is fundamentally to address the above problem, by vent valve and liquid level control switch, water water level and flow are strained in strict control, and the equipment operation that remains a constant speed in the time of can guaranteeing to strain water can not influence the active sludge at the bottom of the reaction tank.

Technical scheme and beneficial effect

1. the utility model has overcome and strains mill weir when conventional siphonic decant device is strained water and can not follow the water level continuous drainage, the utility model is by the siphonal special tectonic in top, assurance is strained the water sucking mouth of hydrophone all the time near the water surface, when supernatant liquor is discharged, can change the function of tool continuous drainage with the variation of reaction tank water level.

2. the utility model takes into full account quantitative draining when design, by top siphon pipe and the switch of holding one's breath, siphon jet generation switch and vent valve siphon pipe is at the uniform velocity descended along water level, reaches the purpose of quantitative draining.

3. control mode of the present utility model adopts liquid level switch and vent valve to control upper and lower siphon pipe.Thereby the work that hydrophone is strained in control.Easy and simple to handle, stable.

4. form bellows with anti-corrosive rubber between the upper and lower siphon pipe of the utility model, have erosion resistance and stopping property preferably, guarantee siphon effect.

Description of drawings

Fig. 1 unpowered siphonic decant device structural representation, 1. spacing support 6. bottom siphon pipes 7. floating drums 8. siphon jet of vent valve 2. vapor pipes 3. top siphon pipes, 4. bellows 5. produce the switches 9. the highest minimum water water level 14. switch activated water level of holding one's breath of straining of water water level 13. of straining of switch 10. minimum liquid level switches 11. drain headers 12. of holding one's breath

Embodiment

According to the preferred implementation of a kind of unpowered siphonic decant device of Fig. 1 structure, the utility model by vent valve (1), vapor pipe (2), top siphon pipe (3), bellows (4), spacing support (5), bottom siphon pipe (6), floating drum (7), siphon jet produce switch (8), the switch of holding one's breath (9), minimum liquid level switch (10), drain header (11), the highlyest strain water water level (12), minimumly strain water water level (13), the switch activated water level (14) of holding one's breath forms.Vapor pipe (2) one ends are connected with vent valve (1), vapor pipe (2) the other end is connected with top siphon pipe (3), top siphon pipe (3) is connected with bellows (4), there is spacing support (5) bellows (4) side, bellows (4) the other end is connected with floating drum (7), floating drum (7) is positioned at bottom siphon pipe (6) top, and drain header (11) upper end is connected with vapor pipe (2), and drain header (11) lower end is connected with bottom siphon pipe (6); The utility model unpowered siphonic decant device relies on gravity and siphon principle to strain water.Bottom siphon pipe (6) bottom design has one section U type pipe that is lower than water outlet.When straining water for the first time, at first this section U type pipe is filled with water, straining in the water afterwards is lower than water outlet owing to this section U type pipe, so the water of U type pipe can not be discharged from all the time.When biochemistry pool comes water, vent valve (1) is closed, the waterborne liter in the process in the biochemistry pool, the water in the U type pipe seals, make air drain header (11) in, form sealing gland prevention water and discharge from water shoot, until pending former water to top water-level.When needs were strained water, vent valve (1) was opened, and the gas of sealing in the drain header (11) is discharged from vent valve (1) by vapor pipe (2), and supernatant liquor is discharged from water port under action of gravity.When the approaching person in charge of water level, the switch of holding one's breath (9) can send a signal, and vent valve (1) is closed, and goes out current and forms the siphon state, continues to strain water.When water level reached lowest water level, minimum liquid level switch (10) provided signal, and vent valve (1) is opened once again, and vapor pipe (2) air inlet destroys the siphon state, strained water and stopped, and waited for next circulation.

Claims

1. unpowered siphonic decant device, it is characterized in that by vent valve (1), vapor pipe (2), top siphon pipe (3), bellows (4), spacing support (5), bottom siphon pipe (6), floating drum (7), siphon jet produce switch (8), the switch of holding one's breath (9), minimum liquid level switch (10), drain header (11), the highlyest strain water water level (12), minimumly strain water water level (13), the switch activated water level (14) of holding one's breath forms; Vapor pipe (2) one ends are connected with vent valve (1), vapor pipe (2) the other end is connected with top siphon pipe (3), top siphon pipe (3) is connected with bellows (4), there is spacing support (5) bellows (4) side, bellows (4) the other end is connected with floating drum (7), floating drum (7) is positioned at bottom siphon pipe (6) top, drain header (11) upper end is connected with vapor pipe (2), drain header (11) lower end is connected with bottom siphon pipe (6), and bottom siphon pipe (6) bottom design has one section U type pipe that is lower than water outlet;

2. as a kind of unpowered siphonic decant device as described in the claims 1, it is characterized in that utilizing top siphon pipe (3) and bottom siphon pipe (6) to control the lifting work of straining hydrophone;

3. as a kind of unpowered siphonic decant device as described in the claims 2, it is characterized in that it mainly is to produce switch (8) by siphon jet that top siphon pipe (3) and bottom siphon pipe (6) produce siphon, the switch (9) of holding one's breath, minimum liquid level switch (10) and vent valve (1) control.