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

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    Water pump unit with diesel engine for the chemical industry
    Water pump unit with diesel engine for the chemical industry
    Water pump unit with diesel engine for the chemical industry
    Water pump unit with diesel engine for the chemical industry
    Water pump unit with diesel engine for the chemical industry
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    • Water pump unit with diesel engine for the chemical industry
    • Water pump unit with diesel engine for the chemical industry
    • Water pump unit with diesel engine for the chemical industry
    • Water pump unit with diesel engine for the chemical industry
    • Water pump unit with diesel engine for the chemical industry

    Category:

    Diesel Engine Pump

    Keywords:

    Pump

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    Water pump unit with diesel engine for the chemical industry

    Flow: 3.4-1080m³/h 

    Manometric height: 3-200m 

    Power: 0.55-160kw 

    Efficiency: 16%-85% 

    Weight of the pump: 44-160kg 

    NPSH: 2.0-6.0m 

    Price: 150,000-1,000,000 

     

    The water pump set with chemical diesel engine type IH is a single-stage centrifugal pump with simple suction and cantilever support, whose marked nominal performance point and dimensions are based on the international standard IS02858-1975(E). It is an energy-saving product designed to replace the corrosion-resistant type F pump. This series of chemical centrifugal pumps is designed according to the performance, technical requirements, and testing methods of energy-saving pumps, and is promoted in our country 

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    Product description

    　　The water pump set with IH type diesel engine is a single-stage centrifugal pump with a simple suction and cantilever support, whose nominal performance characteristics and dimensions are based on the international standard IS02858-1975(E). It is an energy-saving product designed to replace the corrosion-resistant F type pump, this series Chemical centrifugal pump Designed according to the performance, technical requirements, and testing methods of energy-saving pumps, it is one of the energy-saving pump products promoted in our country. It was developed by the technical staff of Changsha Zhonglian Pump Industry Co., Ltd. in collaboration with national pump experts, using excellent national hydraulic models. It is used to suction and transport clean water and liquids with similar physical-chemical properties to water without solid particles. Widely used in urban and industrial drainage, fire-fighting water supply, etc. Suitable for transporting corrosive media or media with physical-chemical properties similar to water at temperatures from 20℃ to 105℃.

    　　The water pump set with IH type diesel engine can transport media at temperatures from -20℃ to 105℃, and when necessary, it uses a double-sided seal cooling device. It can transport media at temperatures from 20℃ to +280℃. It is suitable for the chemical, petroleum, metallurgy, electric, paper, food, pharmaceutical, environmental, wastewater treatment, and synthetic fiber industries, to transport various corrosive media or media similar to water that do not allow contamination.

    Product parameters

    Performance range and meaning of the model of the water pump unit with diesel engine for chemicals:

    　　Flow Q: 3.4～1080m3/h Lift height H: 3～200m

    　　Speed n: 2900, 1450r/min Coupled power: 0.55～160KW

    　　Inlet diameter: 50～200mm                     Maximum working pressure: 1.6Mpa

    　　The IH type chemical pump has 29 basic models, of which 22 are dual speed (2900, 1450r/min). After trimming and modifying the impeller diameter in two types A and B, 112 specifications are achieved.

    　　Note: In addition to the materials listed in the table above, the manufacturer may select suitable materials to manufacture this series of chemical pumps according to user needs. The selected materials and their codes must comply with GB2100-80 in principle. For materials without assigned national codes, the use of common international or national codes (such as industrial or factory standards) is allowed.

    　

     

    Structural characteristics of the water pump unit with diesel engine for chemicals:

     

    　　1 Pump body, 2 Impeller nut, 3 Brake disc nut, 4 Seal, 5 Impeller, 6 Pump cover, 7 Shaft key, 8 Packing ring, 9 Packing, 10 Gland, 11 Suspension bearing component, 12 Shaft.

    　　The pump cover of the IH type water pump unit with diesel engine is fixed to the intermediate support by a stop, then the pump cover is tightened in the middle by connecting the pump body with the stop of the intermediate support. The pump body has axial suction and radial discharge, with a foot support, and can be directly fixed to the base. The suspension component is fixed to the intermediate support by a stop and rests on the base with a suspension support. To facilitate disassembly, an elongated coupling is designed, allowing maintenance without disassembling the inlet and outlet pipes, the pump body, or the motor. It is only necessary to disassemble the intermediate connection piece of the coupling to remove the rotor and perform maintenance. This is a structure commonly used internationally.

    　　The IH type water pump unit with diesel engine has a reasonable and reliable hydraulic design, small volume, light weight, good cavitation resistance, low power consumption, easy maintenance, and high work efficiency. The IH type water pump unit with diesel engine is of horizontal structure, whose structural design can basically meet all piping installations.

    　　Rotation direction: The IH type water pump unit with diesel engine is driven directly by the motor through an elongated coupling, and viewed from the motor end, it rotates clockwise.

    　　Packing seal: The pump cover has a packing box that uses a soft packing seal. Water can be introduced at a certain pressure into the box to cool, lubricate, and clean the seal.

    　　Mechanical seal: There are two types, single-sided mechanical seal and double-sided mechanical seal. Water is introduced at a certain pressure into the sealing chamber to wash the friction surfaces and at the same time cool.

    　　The type of seal of the pump can be packing seal or mechanical seal, according to the user's need. It is also allowed to use shaft seal types with sealing chamber dimensions and other structures that comply with ISO3069, such as mechanical seal with bellows and auxiliary impeller seal, etc.

     

    Instructions for use of the water pump unit with diesel engine for chemicals:

    　　1. Preparation before starting

    　　(1) Before starting, clean the pump and the site.

    　　(2) Check that the amount of lubricating oil in the support is adequate (the oil level should be approximately 2 mm on the central line of the indicator) and that the indicator is in good condition.

    　　(3) Before connecting the coupling, check that the rotation direction of the primary motor matches the arrow direction of the pump, then connect the coupling.

    　　(4) After installing the mechanical seal or packing and the coupling, the pump shaft can be turned manually without rubbing, and the protective cover of the coupling should be installed.

    　　(5) When the pump is used under suction conditions, it must be primed or vacuumed before starting; when used under backflow conditions, the pump must be filled with the transported liquid to expel the air before starting, and the gate valve of the discharge pipe should be closed.

    　　(6) Before starting, check that the base bolts are not loose, that the gland is not misaligned, and that the supply of lubricating oil and cooling water is adequate.

    　　2. Starting

    　　(1) Close the pressure (or vacuum) gauges of the inlet and outlet and the water valves (if there is a bypass pipe, it should also be closed). Start the motor (preferably in slow start mode to confirm the correct direction of the pump before normal operation), then open the pressure (or vacuum) gauges of the inlet and outlet. When the pump reaches normal speed and the instruments indicate the corresponding pressure, slowly open the discharge valve and adjust to the required working conditions. When the discharge pipe is closed, the continuous running time of the pump should not exceed 3 minutes.

    　　(2) During the start-up, constantly pay attention to the power reading of the primary motor and the vibration of the pump. The vibration should not exceed 0.06 mm, measured at the bearing support.

    　　(3) Seal status: The mechanical seal should not have leaks or heating; the packing seal should show continuous dripping.

    　　3. Operation

    　　(1) Frequently check the temperature of the pump and the motor (the temperature rise of the bearing should not exceed 75℃) and the oil supply of the indicator. (Generally, after 1500 hours of operation, all lubricating oil should be changed).

    　　(2) Do not use the suction valve to regulate the flow to avoid cavitation.

    　　(3) It is not recommended for the pump to operate continuously below 30% of the design flow rate. If necessary, a bypass pipe should be installed at the outlet to discharge the excess flow.

    　　(4) Pay attention to abnormal noises during the operation of the pump; if any anomaly is detected, it should be removed or stopped for inspection.

    　　4. Stop

    　　(1) Slowly close the gate valve of the discharge pipe (if the pump is used under backflow conditions, also close the valve of the suction pipe) and turn off all instruments.

    　　(2) Cut off the power supply

    　　(3) If sealing uses an external liquid supply, the external supply valve should also be closed.

    　　(4) If the ambient temperature is below the freezing point of the liquid, the liquid inside the pump should be completely drained to prevent it from freezing and cracking.

    　　(5) If the pump is not going to be used for a long time, in addition to draining the corrosive liquid inside the pump, all parts should be disassembled and cleaned carefully, especially the sealing chamber. It is best to disassemble the pump for cleaning and then reassemble it; in addition to applying oil to prevent oxidation and sealing the pump's inlets and outlets, periodic inspections should also be carried out.

     

    Maintenance of the mechanical seal:

    　　1. Since the mechanical seal is generally used in clean media without suspended particles, the newly installed piping system and storage tank should be carefully washed to prevent solid impurities from entering the sealing surface of the mechanical seal and causing failures.

    　　2. In media prone to crystallization, attention should be paid to frequently washing the mechanical seal. Before restarting after a stop, any crystallization on the mechanical seal should be completely cleaned.

    　　3. When disassembling the mechanical seal, it should be done carefully, without using hand hammers, iron tools, or other impacts to avoid damaging the sealing surfaces of the moving and stationary rings.

    　　4. If dirt cannot be removed, a way to clean it should be sought and washed well before disassembly to avoid damaging the seal components.

    　　5. Before installing the mechanical seal, it should be checked whether all seal components are damaged or failed; if so, they should be repaired or replaced.

    　　6. The relative friction surface between the moving ring and the stationary ring should be strictly inspected, allowing no scratches, impacts, or other defects. All other parts, including the pump body, impeller, and sealing chamber, should be washed before assembly, especially the surfaces of the moving and stationary rings, which should be carefully cleaned with a clean, soft cloth or cotton, and then a layer of clean grease or oil should be applied.

    　　7. During assembly, attention should be paid to eliminate deviations; when tightening the screws, it should be done evenly to avoid tilting that causes seal failures.

    　　8. Correctly adjust the compression of the spring; after installing the pump, when moving the rotor by hand, the seal spring should have some compression but should turn lightly and flexibly without getting stuck. If it feels too tight or does not turn, it should be loosened a bit.

    　　9. For mechanical seals with external washing, before starting, the washing liquid should be opened first to fill the sealing chamber with sealing liquid. When stopping, the pump should be stopped first and then the washing liquid of the seal should be closed.

    Kind advice: Performance parameters can be directly consulted on the pump selection page.

    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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