Utility model content
For solving above technical problem, the purpose of this utility model is to provide a kind of Venturi ejector efficiently, and multiple inlet pipe is tangentially ventilated, and gas distribution is even, and increase gas and liquid comes into contact area, oxygen-transfer efficiency is high.
The utility model object is achieved in that a kind of Venturi ejector efficiently, its key is: comprise the jet head, cylindrical mixing chamber and the diffuser tube that dock successively, described jet head is horn-like, the miner diameter end of this jet head extend in described cylindrical mixing chamber, the miner diameter end of this jet head is arranged near described cylindrical mixing chamber right-hand member, at least 2 inlet pipe are communicated with in the middle part of described cylindrical mixing chamber, this inlet pipe is tangentially arranged on described cylindrical mixing chamber, and inlet pipe described in each is arranged with the central shaft centrosymmetry of cylindrical mixing chamber.
Adopt said structure, current are entered by jet head, gas enters from inlet pipe, the gas of inlet pipe enters after in cylindrical mixing chamber, mix along spiral inner wall with current, gas distribution is even, gas forms very trickle bubble under the effect of high speed strenuous exercise, add contact area, and then increase inspiratory capacity and OTR, and then increase active sludge Surface Renewal rate and adsorption surface area, thus make oxygen and useless Organic substance in water in the tiny cotton-shaped physical efficiency of active sludge and bubble have abundant Contact-sorption effect, improve aeration effect.
The channel diameter of above-mentioned cylindrical mixing chamber reduces to low order end gradually from inlet pipe junction, and the miner diameter end diameter of described jet head is less than described cylindrical mixing chamber right-hand member porthole diameter.
The miner diameter end diameter of above-mentioned jet head is 20-30mm, and the right-hand member porthole diameter of described cylindrical mixing chamber is 40-80mm, and the vertical range of described jet head miner diameter end and described cylindrical mixing chamber right-hand member porthole is 5-30mm.
Adopting said structure, closes up in right part in the internal passages of cylindrical mixing chamber, is compressed by air-flow, increases the severe degree of the motion of air-flow, is convenient to bubble to smash, and increases contact area.
The inwall of above-mentioned inlet pipe and diffuser tube is distributed with the rifle formation of spiral extension, this rifle formation makes air-flow or current carry out helicoidal flow when leaving pipeline.
Adopt said structure, be convenient to further bubble be smashed.
Above-mentioned diffuser tube is horn-like, and the miner diameter end of this diffuser tube docks with described cylindrical mixing chamber.
Adopt said structure, trumpet-shaped diffuser tube can increase aeration surface-area.
The bigger diameter end of above-mentioned jet head is provided with Flange joint dish, and the bigger diameter end port capping of described diffuser tube has stainless (steel) wire.
Adopt said structure, the Flange joint dish of jet head is convenient to install and is connected, and bubble can be smashed by stainless (steel) wire again.
Beneficial effect:
A kind of Venturi ejector efficiently of the utility model, multiple inlet pipe is tangentially ventilated, and gas distribution is even, and increase gas and liquid comes into contact area, oxygen-transfer efficiency is high.
Embodiment
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
Embodiment:
As illustrated in fig. 1 and 2: a kind of Venturi ejector efficiently, by the jet head 1 docked successively, cylindrical mixing chamber 2 and diffuser tube 3 form, described jet head 1 is in horn-like, the miner diameter end of this jet head 1 extend in described cylindrical mixing chamber 2, the miner diameter end of this jet head 1 is arranged near described cylindrical mixing chamber 2 right-hand member, 2 inlet pipe 4 are communicated with in the middle part of described cylindrical mixing chamber 2, the number of certain inlet pipe also can be 3, 4, 5, 6 etc., as long as multiple inlet pipe can be realized evenly ventilate in mixing section, this inlet pipe 4 is tangentially arranged on described cylindrical mixing chamber 2, inlet pipe 4 described in each is arranged with the central shaft centrosymmetry of cylindrical mixing chamber 2.
The inwall of described inlet pipe 4 and diffuser tube 3 is distributed with the rifle formation 4a of spiral extension, this rifle formation 4a makes air-flow or current carry out helicoidal flow when leaving pipeline.Described diffuser tube 3 is in horn-like, and the miner diameter end of this diffuser tube 3 docks with described cylindrical mixing chamber 2.The bigger diameter end of described jet head 1 is equipped with Flange joint dish 5, and the bigger diameter end port capping of described diffuser tube 3 has stainless (steel) wire 6.The channel diameter of described cylindrical mixing chamber 2 reduces to low order end gradually from inlet pipe 4 junction, the miner diameter end diameter of described jet head 1 is 25mm, , the right-hand member porthole diameter of described cylindrical mixing chamber 2 is 60mm, the diameter of jet head miner diameter end also can be 20, 22, 26, 30 etc., the right-hand member porthole diameter of cylindrical mixing chamber also can be 40, 50, 55, 70, 80mm etc., as long as can ensure that the diameter of jet head miner diameter end is less than the diameter of the right-hand member porthole of cylinder mixing, ensure that its size is suitable for simultaneously, the miner diameter end of described jet head 1 and the vertical range of described cylindrical mixing chamber 2 right-hand member porthole are 8.5mm, certainly this vertical range also can be 5, 6, 7, 8, 30mm etc., as long as the right-hand member of miner diameter end near cylindrical mixing chamber of jet head can be ensured, leave sufficient space to existing air-flow and current to mix, air motion degree can be improved simultaneously, smash bubble.