Puede fabricar 26 series de productos, incluyendo bombas de circulación para grandes centrales eléctricas, bombas de condensación para grandes centrales eléctricas, bombas petroquímicas, bombas multietapa, bombas de aguas residuales y lodo, bombas multietapa autoequilibradas, bombas de doble succión y única etapa tipo split, y bombas centrífugas de succión simple y única etapa.
La elección de más de cientos de miles de clientes, cubriendo industrias como minería de carbón, metalurgia, química, energía, recursos hídricos, alimentos, municipalidades y protección ambiental, y exportando a Asia Sudeste, África, América y otros lugares.
La empresa fue la primera en la industria en obtener las certificaciones internacionales del sistema de calidad ISO 9001:2008, del sistema de gestión ambiental ISO 14001 y del sistema de gestión de seguridad y salud ocupacional GB/T 28001, además de la certificación API 610 de la Asociación Estadounidense del Petróleo.
La empresa, fundada en 1989, es una empresa nacional de alta tecnología integral que integra diseño, investigación y desarrollo, fabricación y servicios; actualmente es una empresa clave en la industria china de bombas centrífugas y una de las grandes fábricas especializadas.
Con productos innovadores, calidad excepcional y servicios integrales, buscamos la verdad y la pragmática, avanzamos con iniciativa, y nos esforzamos por lograr el objetivo de ser "la marca líder en el campo de aplicación de bombas centrífugas en el país"! Raigada en Hunan, orientada a todo el país y hacia el mundo!
The IRG series single-stage single-suction vertical centrifugal pump uses performance parameters of the IS type centrifugal pump and adopts an advanced hydraulic model, designed and manufactured according to the international standard ISO2858, with advantages of high energy efficiency, low noise, no leakage, and easy installation and use.
The vertical hot water pipe pump type IRG belongs to the high-temperature pump series, and the product is widely applicable to: energy, metallurgy, chemical, textile, paper manufacturing, as well as to the pressure boosting and transportation of high-temperature hot water in boilers of hotels and restaurants, and circulation pumps for urban heating systems, with a usage temperature T<120℃. The high-temperature hot water pump type GRG has a usage temperature T<240℃.
The single-stage vertical hot water pipe pump type IRG is designed by our scientific and technological staff in conjunction with national water pump experts, selecting an excellent national hydraulic model, using performance parameters from the previous horizontal centrifugal pump type IS, integrating all advantages based on the general SG type pipe pump, and deriving pumps suitable for hot water, high temperature, corrosive chemical pumps, and oil pumps according to different usage temperatures and media, based on the ISG type.
This centrifugal pump product has the advantages of high energy efficiency, lower noise compared to previous pipe pumps, and reliable performance, meeting the requirements of the JB/T53058-93 standard of the National Machinery Ministry. The product is designed and manufactured according to the international standard ISO2858, and in 1993 passed the unified inspection of pipe pump products by the National Machinery Industry Ministry. It is a second-generation high energy efficiency product designed with the production experience of our company over many years. Depending on the medium and temperature of the usage site, the flow passage part can be made of stainless steel according to customer requirements, which has popularized the use of this product series.
Product parameters
Meaning of the model and working conditions of the vertical hot water pipe pump type IRG:
Working conditions:
1. Suction pressure ≤1.6MPa, or maximum working pressure of the pump system ≤1.6MPa, that is, pressure at the pump suction inlet + pump lift height ≤1.6MPa, static test pressure of the pump is 2.5MPa. Please specify the system working pressure when ordering. If the pump system working pressure is greater than 1.6MPa, it must be indicated when ordering so that the pump passage and connection parts are made of cast steel material.
2. Ambient temperature <40℃, relative humidity <95%.
3. The volumetric content of solid particles in the transported medium must not exceed 0.1% per unit volume, particle size <0.2mm.
Note: If the medium used contains fine particles, please indicate when ordering so that the manufacturer uses a wear-resistant mechanical seal.
Structural diagram and features of the vertical hot water pipe pump type IRG:
Product features:
1. The high-temperature hot water pump type IRG has a vertical structure, with equal inlet and outlet diameters located on the same centerline, can be installed in the pipeline like a valve, with a compact design, occupying little space and low construction investment. If a protective cover is added, it can be used outdoors.
2. The impeller is mounted directly on the motor's extended shaft, which significantly reduces the motor load (due to the absence of coupling). The axial dimension is short, the structure is compact, the bearing arrangement of the pump and motor is reasonable, effectively balancing the radial and axial loads generated during pump operation, ensuring stable operation with low noise and vibration.
3. The shaft seal uses a mechanical seal or combination of mechanical seals, with imported titanium alloy seal rings, medium-type high-temperature resistant mechanical seals, and wear-resistant hard carbide seals, effectively prolonging the mechanical seal's service life.
4. Installation and maintenance are convenient, it is not necessary to disassemble the piping system, only the pump support nut needs to be loosened to remove all rotor components.
5. According to usage requirements, pumps can be operated in series or parallel to meet flow and lift height needs.
6. According to the pipeline arrangement, the pump can be installed in a vertical or horizontal position. (See image below)
7. The impeller is the central part of the centrifugal pump, with high speed and great output force. The impeller blades play a main role. Before assembly, the impeller must pass a static balance test. The internal and external surfaces of the impeller must be smooth to reduce friction loss of water flow.
8. The pump body, also called the casing, is the main body of the water pump. It serves for support and fixation, and connects with the mounting bearing support.
9. The pump shaft transmits the motor torque to the impeller, so it is the main component for transmitting mechanical energy.
10. The bearing is the component that supports the pump shaft; there are roller bearings and sliding bearings. Roller bearings use grease as lubricant, the amount should be appropriate, generally 2/3 to 3/4 of the volume; too much causes heating, too little causes noise and also heating. Sliding bearings use clear oil as lubricant, filling up to the oil level line. Too much oil will leak and float along the shaft, too little will cause overheating and damage. During pump operation, the maximum bearing temperature is 85℃, normally around 60℃. If higher, the cause should be investigated (presence of impurities, blackened oil, water ingress) and timely measures taken.
11. The sealing ring, also called the leakage reduction ring. Too large a gap between the impeller inlet and the casing causes high-pressure water to flow into the low-pressure zone, affecting flow and reducing efficiency. Too small a gap causes friction and wear between the impeller and casing. To increase backflow resistance and reduce internal leakage, prolonging the service life of the impeller and casing, a sealing ring is installed at the junction of the inner edge of the casing and the outer edge of the impeller, maintaining a sealing gap between 0.25 and 1.10 mm.
12. The packing box mainly consists of packing, water seal ring, packing cylinder, gland, and water seal tube. Its main function is to seal the space between the casing and the pump shaft to prevent internal water from flowing out and external air from entering, maintaining vacuum inside the pump. When the shaft and packing generate heat due to friction, the water seal tube conducts water to the seal ring to cool the packing and maintain normal pump operation. Therefore, special attention should be paid to the packing box during periodic pump inspections. After about 600 hours of operation, the packing should be replaced.
Performance curve:
Pipe connection method:
Applications of the vertical hot water pipe pump product type IRG:
1. ISG type hot water circulation pump for pipes, for transporting clean water and other liquids with physical and chemical properties similar to clean water, suitable for industrial and urban supply and drainage, high-rise building pressurization, garden irrigation, fire-fighting pressurization and auxiliary equipment, operating temperature T: ≤80℃.
2. The hot water circulation pump (high temperature) type IRG (GRG) is widely used in energy, metallurgy, chemical, textile, paper industries, as well as in hotel and restaurant boilers for the circulation and pressurization of high-temperature hot water and urban heating systems. IRG T operating temperature: ≤120℃, GRG T: ≤240℃.
3. The chemical pipeline pump type IHG is used to transport corrosive liquids without solid particles, with viscosity similar to water, suitable for petroleum, chemical, metallurgy, electric power, paper, food, pharmaceutical, and synthetic fibers, operating temperature T: -20℃ to 120℃.
4. Pipeline pump type YG, for transporting gasoline, diesel, kerosene, and other petroleum products, operating temperature T: -20℃-120℃.
Hot water pipeline pump usage instructions:
I. Preparation before startup:
1. Check if the motor rotation direction is correct; from the top of the motor looking towards the pump, it should rotate clockwise. The test time should be short to avoid dry wear of the mechanical seal.
2. Open the purge valve to fully fill the pump body with liquid, then close the purge valve.
3. Before starting the vertical centrifugal pump type ISG, check that all parts are in normal condition.
4. Manually rotate the pump so that the lubricant enters the mechanical seal surface.
5. For high-temperature models, perform a preheating first, with a temperature increase rate of 50℃/hour to ensure uniform heating.
II. Startup:
1. Fully open the inlet valve.
2. When starting the vertical centrifugal pump, close the discharge pipe valve.
3. Turn on the motor and observe if the pump operates correctly.
4. Check the shaft seal leakage; normally the mechanical seal leakage should be less than 3 drops per minute.
5. Verify that the temperature rise in the motor and bearings is ≤70℃.
6. Adjust the outlet valve opening according to the required conditions. If the user has a flow or pressure meter at the pump outlet, they should adjust the outlet valve opening so that the pump operates at the nominal point listed in the performance parameter table. Additionally, the motor current should be measured to ensure it operates within the nominal current; otherwise, the pump will be overloaded (high current), which can damage the motor. The correct outlet valve opening depends on the pipeline conditions.
III. Shutdown:
1. Close the discharge pipe valve.
2. Stop the motor.
3. When stopping the vertical centrifugal pump, close the inlet valve.
4. If the shutdown is prolonged, completely drain the liquid inside the pump.
5. For high-temperature models, first lower the temperature; cooling rate.
Hot water pipeline pump maintenance:
I. Maintenance during operation:
1. The inlet pipe must always be filled with liquid; operating the pump under prolonged cavitation is prohibited.
2. The vertical centrifugal pump should periodically check the motor current, which must not exceed the motor's nominal current.
3. After prolonged operation, due to mechanical wear, if noise and vibration increase, it should be stopped for inspection; if necessary, replace worn parts and bearings. The major maintenance period is generally one year.
4. During operation, dedicated personnel should manage and maintain to avoid accidents.
5. Every 500 hours of operation, the bearing should be lubricated. For motors with power greater than 11KW equipped with a lubrication device, it can be injected directly with a high-pressure gun to ensure good bearing lubrication.
II. Mechanical seal maintenance:
1. During use, the mechanical seal lubrication must be clean and free of solid particles.
2. It is strictly prohibited for the mechanical seal of the vertical centrifugal pump to operate under dry wear conditions.
3. Before starting the pump, manually rotate the pump (motor) several turns to avoid damage or graphite breakage caused by sudden startup.
4. The seal leakage tolerance is 3 drops per minute; otherwise, it must be checked.
Friendly tip: For more performance parameters of the hot water pipeline pump type IRG, click → [Pump selection] Check on the page
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.
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 。
