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  • 商品名称: VLY长轴液下泵
  • 商品编号: 918
  • 上架时间: 2015-01-19
  • 浏览次数: 118

应用范围:

VLY系列泵为单级、单吸、径向剖分的长轴液下泵。适合输送各种清洁的、无颗粒的或含有一定颗粒的污水、泥浆以及有腐蚀性的液体。该系列泵主要用于污水处理、电厂、炼钢厂、炼油厂、石油化工、煤化工等行业。

性能参数:

流量 Q :2~400 m3/h

扬程 H :5~200m

压力 p :≤2.5MPa

温度 t :-20℃~+120℃

型号说明:  

VLY80-200-L

VLY — 泵系列代号(标配闭式叶轮,如果选用开式叶轮系列代号为VLYK)

80 — 泵排出口直径(mm)

200 — 叶轮名义直径(mm)

L — 插入深度(m)

结构特点:

该系列泵具有很高的安全可靠性,泵运转稳定,使用寿命长,并且维修方便简单,备品备件种类少,具有很高的通用性。

泵体为径向剖分结构,从法兰名义口径80mm以上的泵体设计成双蜗壳结构,减少由水力作用引起的径向力和泵的振动。

充分考虑了叶轮及导叶的抗磨、耐腐蚀性,使叶轮等易损件寿命提高;叶轮和导叶体为多级,适应不同扬程要求。

叶轮采用平衡孔平衡轴向力,叶轮前后盖板均设有可更换的特殊堰堤型密封环,保护叶轮及泵体。有效防止泵停机后杂质沉淀至密封环间隙进口处,极大提高密封环和叶轮的使用寿命。

泵叶轮标准配置为单级、单吸叶轮。优秀的水力模型,具有较高的效率。特殊要求可采用多级叶轮。

泵轴采用可靠的接轴方式,多点支撑结构,确保泵可以在非常苛刻的工况条件下平稳运行。最大插入深度可达10m。

轴可由护管保护,防止轴的磨损或腐蚀;当输送清水时,可取消护管。

泵进口装有滤网,开孔大小适当,既有效地防止大颗粒杂质进入泵内损坏水泵,同时又保证了净进水面积,最大限度减少进口损失,提高了泵效率。

泵叶轮和泵体在液面以下,泵启动时,叶轮浸没在液体中,不存在排气抽空和启动问题。

由于有单独的出液管,延轴方向没有加压的介质渗漏,如果在开式系统中使用,不需要轴封。对于易挥发性、有毒有害性液体以及在闭式系统中使用,可安装机械密封或填料密封。

转子部件由滚动轴承和滑动轴承支承,可进行轴向调节。油脂润滑的滚动轴承安装于底板之上。采用角接触球轴承,采用轴承套安装在轴上,方便转子轴向位置的调整,采用润滑脂润滑轴承,结构简单、安全可靠。

滑动轴承采用自润滑或外润滑结构。自润滑结构(从泵出口接出泵送介质冲洗各个滑动轴承,润滑轴承,带走摩擦副产生的热量)适合输送各种清洁的,无颗粒的液体。外润滑结构(从外界引入清洁的有压冲洗液冲洗滑动轴承,润滑轴承,带走摩擦副产生的热量,同时避免颗粒或杂质进入轴承,保证轴承正常运行)适合输送各种浆料,含颗粒、杂质的液体。

泵的转向:

从电机端俯视,泵为顺时针方向旋转。

Application Range:

VLY series of pumps are single stage and single suction with radial split long shaft submerged pumps. The pumps are suitable for handling clean liquid without solids, or sewage water with solids, slurry and corrosive liquid. This series of pumps are mainly applied for industries like sewage treatment, power plant, steel-making plant, oil refineries, petro chemicals, coal industries etc.

Performance:

Capacity     Q: 2 to 400 m3/h  

Head        H: 5 to 200 m

Pressure      p: ≤2.5MPa

Temperature   t: -20 to +120

Description of pump type:

VLY80-200-L

VLY — Pump series (standard close impellor, VLYK for open impellor)

80 — Pump discharge diameter (mm)

200 — Impellor nominal diameter (mm)

L — Submerged length (m)

Construction Features:

Series of pumps are highly safe, reliable and stable in operation, and have long operation life. The maintenance is easy, and has less categories of spare parts with wide exchangeability.

The pump casing is radial split, and is double volute casing design for flange nominal size 80mm and above so as to reduce radial force and pump vibration caused by hydraulic acting.

Fully considered anti-wearing and corrosion resistance for impellor and diffuser so that the life of impellor and other easy worn parts is prolonged. The impellor and diffuser are multi-stage design which can meet various requirement in head.

· The axial force is balanced through balancing hole for impellor. The front and rare cover of impellor are equipped with exchangeable special ladder type seals ring to protect the impellor and pump casing. This effectively avoided foreign matters settling into the seals ring inlet gaps after pump stopping. So the operation life of seals ring and impellor are greatly extended.

Pump shaft is designed for reliable extension-connection type with multi-supporting point, which guaranteed stable operation under critical services. The maximum submergence length is 10m.

The pump shaft can be protected by tube to avoid wearing or corrosion. And the protection tube is unnecessary when clean water is handled.

Pump suction is installed filter with proper mesh size which effectively stopped big solids entering and damaging the pump, at the same time ensured net inlet area and reduced suction loss to a maximum degree, the pump efficiency is increased either.

Pump impellor and casing is submerged under water, so there will not be any problem of draining and venting when pump is starting.

Separate discharge pipe of pump has no pressurized liquid leakage in shaft direction. And if used in open type of system, the shaft seal is no necessary; If used in close type of system as well as easy volatile or toxic liquid, mechanical seal or packing seal will be available.

Rotating parts can be axially adjusted and are supported with rolling bearings and sliding bearings. The grease lubricated bearings are fitted on the sole plate.

The sliding bearings are self-lubricated or outer lubricated. The self-lubrication structure (flush and lubricate each bearing with pumped liquid from pump discharge, and then take away the heat produced by friction pair) is suitable to transfer clean liquid without solid. The outer lubrication structure (flush and lubricate each bearing with outer sourcing clean and pressurized liquid, and then take away heat produced by friction pair, at the same time stop solids or foreign matters from entering the bearings to guarantee the normal operation) suitable for handling pulp liquids with solids or foreign matters.

Pump Rotation:

The pump is in clock wise direction viewed from driven end.

泵型谱

Performance Range