Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    Horizontal single-stage hot water centrifugal pump with single suction type IR
    Horizontal single-stage hot water centrifugal pump with single suction type IR
    Horizontal single-stage hot water centrifugal pump with single suction type IR
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    • Horizontal single-stage hot water centrifugal pump with single suction type IR
    • Horizontal single-stage hot water centrifugal pump with single suction type IR
    • Horizontal single-stage hot water centrifugal pump with single suction type IR

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    Hot Water Pump

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    Pump

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    Horizontal single-stage hot water centrifugal pump with single suction type IR

    Flow: 3.75-1080m³/h

    Lifting height: 4-128m

    Power: 0.55-160kw

    Efficiency: 23%-85%

    Pump weight: 40-2100kg

    NPSH (Cavitation margin): 2.0-6.0m

    Price: 0.29-3.25 ten thousand

     

    The single-stage, single-suction horizontal IR type clean water centrifugal pump is a nationally co-designed energy-saving pump. It is an updated version of the BA, BL types and other single-stage clean water centrifugal pumps. Its advantages include: a reasonable hydraulic performance arrangement throughout the series, a wide selection range for users, and ease of maintenance; the efficiency and suction height reach an advanced international average level. This type of pump is suitable for industrial and urban water supply and drainage,

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    Product Description

    　　The single-stage, single-suction hot water centrifugal pump type IR is a nationally co-designed energy-saving pump. It is an updated version of the single-stage clean water centrifugal pumps type BA, BL, and others. Its advantages include: a reasonable arrangement of hydraulic performance throughout the series, a wide selection range for the user, and ease of maintenance; efficiency and suction height reach an advanced international average level. This pump is suitable for water supply and drainage in industry and cities, and can also be used for agricultural irrigation and drainage, as well as for the supply and transport of clean water or other liquids with physical and chemical properties similar to clean water, with a temperature not exceeding 150°C. 

    Product parameters

    Performance parameters and model meaning of the single-stage horizontal hot water centrifugal pump with single suction type IR:

    　　IS and IR type hot water pumps have a simple structure, reliable performance, small size, light weight, good cavitation resistance, low power consumption, and are easy to use and maintain.

    　　IS and IR type horizontal hot water pumps have wide applicability, with a total of 140 specifications in the entire series, but only use four types of shafts; shafts, bearings, and shaft seals of the same specification are interchangeable; the suspension of the entire pump series also has only four types.

    　　The pump speed is divided into two types: 2900 and 1450 revolutions per minute.

    　　Performance as follows: 2900 rpm 1450 rpm

    　　Maximum flow: 240 m³/min 400 m³/min

    　　Maximum total head: 125 m 55 m

    　　Maximum speed: 3500 rpm (when using a 60 Hz power supply, the impeller diameter is reduced)

    　　Maximum working temperature: 150℃

    　　Allowed pressure in the suction pipe 0.3MPa, maximum pump operating pressure 1.6MPa.

     

    Single-stage hot water pump type IR

    Structural features of the single-stage horizontal hot water centrifugal pump with single suction type IR:

    Structural diagram of the single-stage hot water centrifugal pump type IR

    　　1 pump body, 2 pump cover, 3 impeller, 4 shaft, 5 sealing ring, 6 impeller nut, 7 retaining washer, 8 shaft sleeve, 9 stuffing box, 10 packing ring, 11 packing, 12 suspension bearing components.

    　　The single-stage horizontal hot water pump type IR has a rear opening; it is not necessary to dismantle the suction and discharge pipes when removing the pump cover and impeller. The suspension contains two ball bearings lubricated with machine oil or grease. The pump is directly driven by the motor through an elastic coupling. The volute chamber, legs, inlet flange, and outlet flange are cast in one piece.

    　　The single-stage horizontal hot water pump type IR is designed according to the performance specifications and dimensions established by the national standard ISO2858, and mainly consists of the pump body (1), pump cover (2), impeller (3), shaft (4), sealing ring (5), shaft sleeve, and suspension bearing components (12).

    　　The body and cover of the single-stage hot water centrifugal pump type IR are divided from the rear of the impeller, that is, the commonly called rear opening structure. Its advantage is ease of maintenance, as it is not necessary to dismantle the pump body, suction and discharge pipes, or motor during repair; only the intermediate coupling of the extended coupling needs to be removed to take out the rotor and perform maintenance.

    　　The pump casing (i.e., the body and pump cover) forms the pump working chamber; the impeller, shaft, and roller bearings form the rotor. The suspension bearing components support the rotor parts of the pump, and the roller bearings support the radial and axial forces of the pump.

    　　To balance the axial force of the pump, most impellers have sealing rings at the front and rear, and there are balance holes on the rear plate of the impeller. Because some pumps have little axial force, sealing rings and balance holes are not installed on the rear of the impeller.

    　　The axial sealing ring of the pump consists of the stuffing box (9), packing ring (10), and packing (11) to prevent air ingress or water leakage. If the impeller is balanced, the cavity with soft packing is connected to the impeller inlet; if the liquid at the impeller inlet is in a vacuum state, air can easily enter along the surface of the shaft sleeve, so a packing ring is installed in the cavity that leads pressurized water from the pump chamber through a small hole in the cover to seal. If the impeller has no balance holes, because the liquid pressure at the rear of the impeller is higher than atmospheric pressure, there is no vapor leakage problem, so the packing ring is not necessary.

    　　To prevent shaft wear, a protective sleeve is installed on the shaft part passing through the packing cavity, and an O-ring seal is installed between the sleeve and the shaft to prevent air ingress or water leakage along the contact surface.

    　　The pump transmission mode is via an extended elastic coupling connected to the motor. The pump rotation direction, viewed from the drive end, is clockwise.

    Installation of the single-stage horizontal hot water centrifugal pump with single suction type IR:

    　　1. Assembly and disassembly

    　　Before assembly, inspect whether the parts have defects affecting assembly and clean them before proceeding.

    　　1. Connection bolts, threaded plugs, etc., can be pre-tightened on the corresponding parts.

    　　2. O-ring seals, paper gaskets, felts, etc., can be pre-placed on the corresponding parts.

    　　3. Sealing rings, packings, packing rings, stuffing boxes, etc., can be pre-assembled on the pump cover in order.

    　　4. Mount roller bearings on the shaft, then on the suspension, close the cover, tighten the roller bearings, and place the connection bolts on the shaft.

    　　5. Mount the sleeve on the shaft, then mount the cover on the suspension, then mount the impeller, retaining washer, impeller nut, etc., and tighten them. Finally, mount the above components on the pump body and tighten the connection bolts of the body and pump cover.

    　　During the previous assembly, special attention must be paid to small parts such as the key, the oil tray, the water gasket, the O-shaped seal inside the shaft sleeve, which are easy to lose or assemble in the wrong order.

    　　The disassembly order of the pump can basically be carried out in the reverse order of assembly.

    　　2. Installation

    　　The quality of the pump installation has an important impact on the operation and service life of the pump, so installation and alignment must be carried out carefully. Dimensions and external shape of the pump.

    　　1. Installation and alignment:

    　　1) Clean grease and dirt from the base, place the base on the foundation.

    　　2) Use a level to check the horizontality of the base; leveling with shims is allowed.

    　　3) Fill the base and anchor bolt holes with cement.

    　　4) After the cement has dried, check if the base and anchor bolt holes are loose; once appropriate, tighten the anchor bolts and recheck the level.

    　　5) Clean the support surface of the base, the surface of the feet of the water pump and motor, and mount the pump and motor on the base.

    　　6) A certain space must be maintained between the couplings; check if the centerlines of the pump shaft and motor shaft are aligned, a thin washer can be used to adjust and make them concentric.

    　　The difference in the outer diameter of the coupling at the top, bottom, left, and right should not exceed 0.1 mm, and the maximum and minimum difference of the clearance around the end face of the two couplings should not exceed 0.3 mm.

    　　2. Installation instructions:

    　　1) The installation height of the centrifugal pump, the length, diameter, and speed of the pipe must comply with calculations, aiming to reduce unnecessary losses.

    　　2) For long-distance transport, a larger pipe diameter should be chosen; the pump pipe must have its own support, and the weight of the pipe is not allowed to rest on the pump to avoid damage.

    　　3) If a check valve is installed in the discharge pipe, it must be placed outside the gate valve.

    　　III. Start-up, stop, and operation

    　　1. Start-up:

    　　1) Before connecting the coupling, confirm that the motor rotation direction is correct and that the pump runs smoothly.

    　　2) Close the check valve in the discharge pipe.

    　　3) Fill the pump with water or prime it with a vacuum pump.

    　　4) Connect the power supply; when the pump reaches normal speed, gradually open the gate valve in the discharge pipe and adjust it to the required working conditions. When the gate valve in the discharge pipe is closed, the continuous running time of the pump should not exceed 3 minutes.

    　　2. Stop:

    　　1) Gradually close the gate valve in the discharge pipe and cut off the power supply.

    　　2) If the ambient temperature is below 0℃, drain the water from the pump to prevent freezing and cracking.

    　　3) If it will be stopped for a long period, the pump should be disassembled, cleaned, lubricated, and properly stored.

    　　3. Operation:

    　　1) During start-up and operation, carefully observe the instrument readings, bearing heating, packing leakage and heating, as well as vibrations and noises; if any abnormalities are detected, they should be addressed immediately.

    　　2) The maximum bearing temperature should not exceed 80℃, and the bearing temperature should not exceed the ambient temperature by more than 40℃.

    　　3) The packing should be in normal condition, with small and uniform water leakage.

    　　4) The bearing oil level should be maintained at the normal position, neither too high nor too low; if low, lubricant should be added in time.

    　　5) If the wear of the clearance between the sealing ring and the impeller coupling part is too large, the sealing ring should be replaced with a new one.


     

    Helpful tip: For more performance parameters of the single-stage, single-suction horizontal hot water centrifugal pump type IR, please visit the page →【Pump Selection】 for reference.

    Changsha Zhonglian Pump Industry Co., Ltd.

    Why Choose Us?

    Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.

    Changsha Zhonglian Pump Industry Co., Ltd.
    Changsha Zhonglian Pump Industry Co., Ltd.

    FAQ

    Q

    What products do you mainly produce?

    A

    Zoomlion Pump Industry manufactures various large industrial centrifugal pumps. The main products include: self-balancing multistage pumps, multistage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condenser pumps, and more.

    Q

    Can you help me choose a model?

    A

    Of course! If the water pump model is not selected accurately, it can cause significant problems. After you take it back, it might be either too small to meet the usage requirements or too large, resulting in higher electricity and fuel costs, increasing the operating expenses.

    Q

    Why is the price quotation so slow?

    A

    Because centrifugal pumps are non-standard custom products with many models and a wide price range. Even for the same model, the price varies greatly depending on the materials and configurations used. Taking the most common pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clearly confirm the relevant information to provide you with an accurate price. Normally, if you provide comprehensive information, we can quote within 5 minutes.

    Q

    What information should I provide when I need a quote?

    A

    Usually, if you want to get an accurate quote, it is recommended that you provide us with the following information: pump flow rate, head, on-site operating voltage, frequency, temperature of the conveyed liquid, pH value, solid particle content, on-site installation conditions (horizontal or vertical installation), and other related details. If you are not very familiar with these, it’s okay; our sales manager will assist you in determining them.

    Q

    Do you have centrifugal pumps in stock?

    A

    There are many models and configurations of centrifugal pumps. Except for a small number of commonly used standard models that are in stock, the vast majority of models and configurations are not stocked and are customized products. We need to first select the pump based on your site conditions such as flow rate, head, medium temperature, pH value, and installation conditions. After determining the pump model and configuration, we can then place an order with the workshop for production.

    Q

    What is your usual delivery time?

    A

    Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。

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