中开双吸泵 进口中开双吸泵 德国进口中开双吸泵In the open double suction pump
产品概述
中开多级双吸泵为德国巴赫技术基础上自行开发设计的新一代两级水平中开式离心泵.该泵可替代传统的节段式多级泵,用于输送清水、含有少量固体颗粒的液体以及带腐蚀性的液体之用.适用于高楼供水、工业锅炉、消防、矿山给排水、化工以及多种工业供水系统等.
技术优势
1、采用两级叶轮背靠形式,轴向力自动平衡.取消了许多级泵必备的平衡盘结构,泵的可靠性和无故障了率大大提高,特别适应转速变化大,液体粘度大的应用场合.
2、较短的轴承跨距,增加了轴的刚性,使泵运行更平稳、安静,特别适应于需要宁静供水的场合.
3、流量范围扩大到1000m3/h,填补了普通多级泵的市场空白.
4、优异的水力模型,水泵效率高于同参数多级泵,更节能,更环保.
5、采用水平中开的泵壳结构,泵的吸入口和排除口位于泵壳的下部,检修时,无需拆下电机和管路,操作极为方便,从而缩短检修时间,降低使用成本.
结构说明
1、 泵的吸入口和排出口位于泵壳的下部,水平的安置现在两侧,与泵的轴线成90度角.泵体成水平中开式,便于将其拆开,检修时无需拆下电机和管路,操作极为方便.
2、 泵的主要零件有:泵座、泵盖、两级叶轮、泵轴、轴承座和密封环等.
3、 本泵的主要结构:两个叶轮用叶轮挡套和轴套螺母固定在泵轴上,为了减少压出室的液体漏入吸入室,在两个叶轮的吸入口处装有密封环.泵轴的支承,靠联轴器一端采用两个单列向心推力球轴承,另一端采用两个单列向心球轴承.轴承采用油脂润滑或稀油润滑.单列向心推力球轴承除承受转子的径向力外,同时还承受对称配置叶轮自然平衡后剩余部分的轴向推力.在轴承下部设有一个真空室,必要时(轴承温度超过许用温度)可往其中灌入冷却水,以冷却轴承.所输送的液体进入第一级叶轮,经第一级叶轮排出口液体沿着内流道进入第二级叶轮,再经第二级叶轮排出到出水管内.在泵的最高位置又一个四方螺塞塞住的螺孔,供泵在开动前联接真空泵以抽出空气将水引入泵壳内.本泵由电机通过弹性联轴器直联传动.
4、 泵的密封形式一般采用填料密封;吸入端装有填料环,吸入端填料所需密封、润换水由泵的第一级排出室通过水封管接入填料环内,水量的大小可以通过阀调整;排出端填料所需润滑水,则是靠第二级叶轮进水室的高压水自行润滑.当对密封性能要求较高时,可选用机械密封,机械密封由动环、静环、压紧元件和密封元件组成.
技术参数
泵出口直径：80-300mm
流 量：100-1000m3/h
扬 程：160-320
工作温度：-20°C --150°C
固体颗粒：≤80mg/L
工作许用压力：≤4Mpa
In a multistage double suction pump is developed by the German Bach technology based on the design of a new generation of the two level open centrifugal pump. The pump can replace the traditional multistage pump, used for transporting water, containing a small amount of solid particles in the liquid and corrosive liquids used for water supply, industrial buildings. Boiler, fire, mine drainage, chemical and other industrial water supply system.
Technological advantage
1, the two stage impeller back form, axial force balance. Automatically canceled many pumps necessary balance disc structure, the reliability of the pump and the failure rate is greatly improved, especially to speed changes, the viscosity of the liquid applications.
2, shorter bearing span, increase the rigidity of the shaft, so that the pump runs more smoothly and quiet, especially adapted to the need for quiet water supply occasions
3, the flow range expanded to 1000m3/h, to fill the general multi-stage pump market gaps
4, excellent hydraulic model, pump efficiency is higher than the same parameter multi-stage pump, more energy saving, more environmentally friendly
5, the use of horizontal pump shell structure, pump suction port and exclusion port is located in the lower part of the pump shell, the overhaul without dismantling the motor and pipe, the operation is very convenient, thereby shortening the overhaul time, reduce the cost of use
Structure description
1, the pump suction port and a discharge port is located in the lower part of the pump shell, the level of resettlement now on both sides of the pump axis, and a 90 degree angle. The pump level in the open, easy to open, there is no need to remove the motor and pipeline maintenance, the operation is very convenient.
2, pump main parts are: pump seat, pump cover, two impeller, pump shaft, bearing seat and sealing ring and so on
3, the main structure of the pump: two impeller impeller block sets and sleeve nut fixed on the pump shaft, in order to reduce the chamber pressure of liquid leakage into the suction chamber, the inlet of the impeller is provided with a sealing ring two. The supporting shaft, by coupling end adopts two single radial thrust ball bearings the other end of the two row radial ball bearings. Bearings with grease or oil lubrication. Single direction thrust bearing radial force bearing rotor except outside, also bear the axial thrust the remaining part of the impeller. The natural balance of symmetric configuration is provided with a vacuum chamber in the lower part of the bearing, if necessary (exceed the allowable bearing temperature the temperature to which) poured into the cooling water to cool the bearing. The delivery of liquid into the first stage impeller, the first stage impeller outlet liquid along the inside passage into the second stage impeller, and then the second stage impeller discharged into the tube. In the water The screw pump and the highest position of a square plug plug, for the pump before starting the vacuum pump to draw air connection to bring water into the pump shell. The pump is composed of a direct drive motor through flexible coupling.
4, the general form of pump seal with packing seal; suction end is provided with a packing ring, packing seal, suction side needed to run water from the first stage pump discharge chamber through a water seal pipe connected packing ring, the size of the water through the valve can be adjusted; the discharge end packing required lubricating water is high pressure water by second impeller inlet chamber of self lubrication. When high sealing performance, can be used by mechanical seal, mechanical seal ring, a static ring, a pressing element and sealing element.
technical parameter
Pump outlet diameter: 80-300mm
Flow rate: 100-1000m3/h
Lift: 160-320
Operating temperature: -20 degrees C, --150 degrees C
Solid particles: less than 80mg/L
Allowable working pressure: 4Mpa