How to choose the model of fire pump

Description :

　　How to identify the model of fire pump?

　　The XBD (XH) series fire water supply equipment is designed by technical personnel, absorbing advanced and mature design experience at home and abroad, and manufactured strictly in accordance with ISO9001 standards. Obtained the "Decoration" and "Fire Protection Product Approval Certificate";

　　2. The XBD (XH) series fire water supply equipment can be equipped with diaphragm pressure tanks or automatic gas supply pressure tanks. These two pressure tanks have different characteristics: simple diaphragm structure, high efficiency, can be used for a long time, and can be inflated in one go. The automatic air replenishment type can adjust the air water ratio without being limited by aging and size specifications. Pressure tanks belong to the category of pressure vessels. The design, manufacturing, pressure testing, inspection, and acceptance of the pressure tank configured by our company all comply with the requirements of GB150-1998 "Steel Pressure Vessels";

　　3. The XBD (XH) series fire water supply equipment can be equipped with SLS series single-stage centrifugal pumps or DL series multi-stage centrifugal pumps. The SLS series single-stage centrifugal pump has a simple structure and low cost; The DL series multi-stage centrifugal pump operates stably and has a high head.

　　4. The XBD (XH) series fire water supply equipment has advanced multifunctional programming control and regular fire inspections of the main fire pump. It can receive multiple fire alarm signals and can be connected to the fire center network.

　　5. The XBD (XH) series fire water supply equipment is equipped with two power interfaces and has dual power automatic switching function;

　　The accessories used in the XBD (XH) series fire water supply equipment have been screened by many manufacturers and have reliable product quality assurance. The key components of standard products, such as electric motors, pump bearings, programmable controllers, circuit breakers, contactors, relays, small pressure tanks, etc., also use international and domestic products;

　　7. The XBD (XH) series fire water supply equipment has a small volume, compact structure, and is not limited by the water supply situation. It can be set to supply water to any height of the fire pipe network;

　　The emergency fire pressure water supply equipment in the XBD (XH) series fire water supply equipment can store 10 minutes of fire water consumption and can replace urban fire water tanks. It has the advantages of low investment, short construction period, simple construction and installation, and easy implementation of automatic control. Advantages, especially suitable for buildings in earthquake prone areas, concealed projects, temporary buildings, and buildings that are not suitable for using high water tanks due to architectural art and other requirements.

　　Classification of fire pump models

　　According to the form of the water pump, it can be divided into central support type, pipeline type, sub seat type, sub seat type, and movable type

　　According to the driving mode, it can be divided into direct coupling, gear transmission, hydraulic coupling transmission, skin transmission, and coaxial transmission.

　　3. According to special structures, it can be divided into immersion type, bucket type, double walled shell type, foundation pit bucket type, extraction type, self-priming type, submersible type, and shielding type.

　　4. According to the axial force balancing method, it can be divided into balanced drum type, balanced disc type, self balancing type, and balanced hole type.

　　5. According to different purposes, it is mainly divided into boiler feed water pump, circulating water pump, sewage pump, impurity pump, sand pump, mud pump, mud pump, sewage pump, clean water pump, fire pump, process pump, booster pump, corrosion-resistant pump

　　6. According to the different materials, it can be divided into: cast iron pump, stainless steel pump, plastic pump, fluoroplastic pump, and engineering plastic pump

　　7. Divided by structure into centrifugal pump, diaphragm pump, gear pump, plunger pump, reciprocating pump, vacuum pump, jet pump

　　8. Divided into single suction and double suction according to inhalation form

　　Key points of fire pump

　　When directly connecting the pump to the motor, please pay attention to the coaxiality between the pump shaft and the motor output; The installation accuracy of a pump has a significant impact on its operational stability and service life, therefore it must be carefully installed and calibrated.

　　2. The pump coupling must be tightened with a screwdriver and the nut must be tightened to prevent the screwdriver from loosening, otherwise it is easy to cause impeller movement and mechanical failure.

　　3. In order to maintain a certain amount of stored liquid in the pump body for better self-priming ability and to prevent dry friction of the mechanical seal,

　　Fire pump model installation precautions for fire pumps

　　When installing the pump, the static grounding resistance of the pump and pipeline should meet the specified requirements.

　　2. Should strict inspections be conducted during the installation process? Check for stones, iron sand, and other debris in the pump casing and pipelines.

　　3. Correct the installation clearance and coaxiality of the pump coupling and motor coupling, with an allowable deviation of 0.1 mm for different shaft degrees. The height difference between the pump shaft and motor shaft can be adjusted by placing copper or iron on the feet.

　　4. Check after 3-4 hours of actual operation of the machine. If there are no adverse phenomena, it is considered to have been installed correctly. During the trial operation, the temperature of the bearings should be checked. The temperature of the bearing body should not exceed 70 ° C.

　　If the pump bearing body is equipped with a cooling water device, and the inner hole of the cooling water device of the hose or plastic pipe of the cooling water device is Φ 12, the thread size is M12 × 1.75.

　　If a one-way valve is installed on the outlet pipeline of the pump and the pump cannot smoothly discharge gas during the self-priming process, a small exhaust pipe and valve should be connected to the outlet of the pump.

　　Fire pump model

　　1. This series of self-priming pumps are lubricated with calcium based butter and No. 10 engine oil according to their working conditions. If the pump is lubricated with grease, it should be regularly filled with butter in the bearing box. Use an oil lubrication pump. If the oil level is insufficient, please add enough oil.

　　2. Check if the stored liquid in the pump casing is higher than the upper edge of the impeller. If it is insufficient, you can directly inject the storage fluid into the pump body through the oil injection port on the pump housing. If the storage liquid is insufficient, the operation should not be started. Otherwise, the pump will not function properly and the mechanical seals are easily damaged.

　　3. Check if the rotating parts of the pump are stuck by electromagnetic collision.

　　4. Check if the bottom of the pump body and the joints are loose.

　　5. Check the coaxiality and parallelism of the pump shaft and motor shaft.

　　6. Check if there is any leakage in the inlet pipeline. If there is a leak, efforts must be made to eliminate it.

　　7. Open the valve of the suction pipeline. Slightly open (not fully open) the outlet control valve.

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• Fire pump model