Low-speed flow propeller-Chongqing Chenming Water Treatment Equipment Co., Ltd. submersible aerator | submersible aerator mobile | Hyperboloid Mixer | chlorine dioxide generator, tel :86-23-68888427

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Low-speed flow propeller

Parameter

Description:

Low-speed flow propeller

Product Description

　　Modle QDT low-speed flow propeller is extensively used for the flow propelling in the oxidizing ditches in the technological process of the water treatment, agitation in various types of bio-chemical tanks and also used in the mixing and flow propelling for freezing prevention in the rivers, landscape water cycling and so on. The low-speed flow propeller consists of the submersible motor, speed-reducing device, vanes, installation system, etc. The product is characterized by low power (1.5-7.5KW), low rotational speed (36~135rpm), large diameter of the vanes (1000-2500mm),low-speed rotation, production of large-volume flow field and wide scope of service. The swept-back, banana-shaped vanes nave the self-cleaning function, being shaped with the use of PU or aluminum alloy through precision casting and having such advantages as light weight, high strength, good resistance against corrosion and so on. Its excellent frictional property can ensure the production of he good damping effect with relation to liquid under the moving state of low rotational speed so as to create the gentle water flow. The series of products have also the mixing function apart from the flow propelling and creation of water flow as shown in the drawing.

Scope of Application
　　The submersible mixers are mainly used for the purposes of mixing, agitating and making ring flows in the process of municipal and industrial and industrial sewage treatment and can also be used as the maintenance equipment for the landscape water environment；though agitation, they can achieve the function of creating water flow, improving the quality of the water body, increasing the oxygen content in water and effectively preventing the sedimentation of the suspended substances.

Conditions of Usage
In order to ensure the normal operation of the submersible mixer, please make correct selection of the operating environment and the operating modes.
The highest temperature of the media shall not exceed 40℃;
The scope of the pH value of the media:5~9；
The density of the media shall not exceed 1150Kg/m3;
The depth of submersion shall not exceed 20m

Special Warning: The submersible mixer must operate in the complete submersion into water and cannot operate in the inflammable, explosive, highly corrosive and high-temperature environment. In line with the requirement for the special environment, our company can provide the special design to the users.

Performance Parameter
The perfomance paramfers of the submersible mixer are shown in the following table with the rated voltage of 380v and the frequency of 50Hz:

Model		Motor power	Rated current	rpm of vane or propeller	Diameter of vane or propeller	Thrust	Weight
Low- Speed Flow Prop- eller	QDT1.5/4-1000/2-85/P/Al	1.5	4	85	1000	1780	170
	QDT3/4-1100/2-135/P/Al	3	6.8	135	1100	2410	170
	QDT1.5/4-1400/2-36/P/Al	1.5	4	36	1400	696	180
	QDT2.2/4-1400/2-42/P/Al	2.2	4.9	42	1400	854	180
	QDT2.2/4-1600/2-36/P/Al	2.2	4.9	36	1600	1058	190
	QDT3/4-1600/2-52/P/Al	3	6.8	52	160	1386	190
	QDT1.5/4-1800/2-42/P/Al	1.5	4	42	1800	1480	198
	QDT3/4-1800/2-52/P/Al	3	6.8	52	1800	1946	198
	QDT4/4-1800/2-63/P/Al	4	9	63	1800	2750	198
	QDT2.2/4-2000/2-36/P/Al	2.2	4.9	36	2000	1459	200
	QDT4/4-2000/2-52/P/Al	4	9	52	2000	1960	200
	QDT4/4-2200/2-52/P/Al	4	9	52	2200	1986	220
	QDT5/4-2200/2-63/P/Al	5	11	63	2200	2590	220
	QDT1.5/4-2500/2-36/P/Al	1.5	4	36	2500	1243	215
	QDT4/4-2500/2-42/P/Al	4	9	42	2500	2850	250
	QDT5/4-2500/2-52/P/Al	5	11	52	2500	3090	250
	QDT7.5/4-2500/2-63/P/Al	7.5	15	63	2500	4275	280

1、Ofthe mixd agitating series in the above table,the value listed in the column of “Weight”contains the weight of the dome;
2、Insulation class for the windings of the motor:ClassF;Protective class;IP68;Operating mode of the motor:Continuous operation for 24 hours

The model selection of submersible mixer is a rather complicated job. The correctness of the scheme selection will directly affect the normal usage of the equipment. The principle for the model selection is to enable mixer to give full play to its mixing function in the appropriate volume. This standard can generally be determined with the use of the flow velocity. In line with the different technological requirement of the sewage treatment, the optimum flow velocity for the mixer model selection shall ensure the velocity range of 0.15~0.3m/s. In case of the flow velocity lower than 0.15m/s, the effect of agitation or mixing can not be achieved. In case of the flow velocity greater than 0. 3m/s,the technological result will be affected and waste will be caused. Therefore, first of all, it is necessary to determine what kind of locations the mixer will be used in, for instance, sewage tank, slag pond or bio-chemical pond. Secondly, the parameters of the media such as content of the suspended substances, temperature, pH value as well as the shape of the pond, water depth and even the mode of installation and so on will all influence the model selection. Meanwhile, it is also necessary to consider the energy-saving factor, because this will affect the operating cost of the users in the future. Reference can be made to the diagrams of the flow field of the submersible mixer.

For the purpose of obtaining the optimum mixing function under the different environments, we can supply a multiple of models of the submersible mixers to the users and provide the model selection service.

Notes：

1.The special installation systems for the submersible mixers can facilitate the quick installation and dismantling of the submersible mixers under the conditions of no need for draining off sewage from the pond.
2.Installation System l-1 is 0nly suitable for the pond depth<4m and the mixer models of QJBO.85/8 and QJBl.5/6 and with the possibility 0f adjusting the angles in both the horizontal and 1ongitudinal directions.With the depth＞4m, the installation system I-2 shall be chosen.
3.For installation systems Ⅱ and Ⅲ，the guide rod can rotate round the axial line of the guide rod along the horizontal direction with the maximum angle of rotation士60°．
4.With H>4m，it is necessary to add a supporting frame between the guide rods.
5.The supporting frame and the 1ower support shall be fixed onto the pond wall and the pond bottom with the use of expansion bolts or chemical anchors;any pre-prepared holes can be dispensed with.
6.While placing an order by customer．please supply the pond depth H and the drawing 0f the pond shape so as todetermine the dimensions of the guide rod and the number Of the suppo rting frames.
7.The installation systems may employ the material of stainless steel or carbon steel for the selection of the corrosionresisting properties.
8.A multiple of mixers can share one lifting system

The installation and positioning of fhe subme rsible mixers will p roduce a g reat impact On the effect 0f mlxmgIn order to obtain the double operating result with the half effort，It is suggested that the advice of the specialized designers shall be followed and full consideration given to the shape Of the pond，position of the water inletand outlet．the vortexresulting from the outflow from the mixer onto the structures and some other conditions. Every effort shall be made to reduce the short-circui circulation and the occurrence 0f dead corners and avoid the dashing of the flow against the pond wall for lowering the flow velocity．Making reference to the diagrams of operating modes below will help you to make areasonable selection of the mixers and thei r installation modes

Installation Modes and Dimensions

　　The submersible mixers can be installed in a multiple of modes．Here are four generally accepted modes of installation for selection with reference made to the following table．Our company can also provide the specia1 designs in accordance with the demand of the users.

Model	a	D	b	L	H1min	H2min	Installation system
QDTl.5/4-1000	口100	1000	200	1240	1000	185	Ⅳ
QDT3/4-1100	口100	1100	200	1240	1000	185	Ⅳ
QDTl.5/4-1400	口100	1400	200	1212	750	85	Ⅳ
QDT2.2/4-1400	口100	1400	200	1212	750	85	Ⅳ
QDT2.2/4-1600	口100	1600	200	1212	750	85	Ⅳ
QDT3/4-1600	口100	1600	200	1250	800	85	Ⅳ
ODT2.2/4-1800	口100	1800	200	1212	800	85	Ⅳ
QDT3/4-1800	口100	1800	200	1250	800	85	Ⅳ
QDT4/4- 800	口100	1800	200	1250	900	85	Ⅳ
QDT2.2/4-2000	口100	2000	200	1340	750	85	Ⅳ
QDT4/4-2000	口100	2000	200	1370	800	85	Ⅳ
QDT4/4-2200	口100	2200	200	1370	800	85	Ⅳ
QDT5/4-2200	口100	2200	200	1370	800	85	Ⅳ
QDT3/4-2500	口100	2500	2OO	1340	750	85	Ⅳ
QDT4/4-2500	口100	2500	200	1370	800	85	Ⅳ
QDT5/4-2500	口100	2500	200	1370	800	85	Ⅳ
QDT7.5/4-2500	口100	2500	200	1430	850	85	Ⅳ

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