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IS/ISR horizontal single-stage single-suction water centrifugal pump

IS, ISR horizontal single-stage single-suction clear water centrifugal pump is a nationally designed energy-saving pump. It is a new type of BA type, BL type and other single-stage clear water centrif
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product description
 
IS, ISR horizontal single-stage single-suction clear water centrifugal pump is a nationally designed energy-saving pump. It is a new type of BA type, BL type and other single-stage clear water centrifugal pumps. The advantages are as follows: the whole series of hydraulic performance layout is reasonable, the user has a wide selection range, and the maintenance is convenient; the efficiency and the suction stroke reach the international average advanced level. The IS type pump is used to transport clean water at a temperature not exceeding 80 ° C, and the ISR type pump is used to transport hot water below 130 ° C.
 
Features
 
1. IS, ISR horizontal single-stage single-suction clear water centrifugal pump is designed according to the performance and size specified by international standard ISO2858, mainly by pump body, pump cover, impeller, shaft, seal ring, bushing and suspension bearing. And so on.
 
2. The pump body and pump cover part of the horizontal single-stage single-suction clear water centrifugal pump of IS, ISR type are divided from the back side of the impeller, which is commonly called the rear opening structure. The utility model has the advantages that the maintenance is convenient, the pump body is not moved during the maintenance, the suction pipeline, the discharge pipeline and the electric motor are removed, and only the intermediate coupling member of the extension coupling is removed, and the rotor portion can be taken out for maintenance.
 
3. The pump housing (ie pump body and pump cover) forms the working chamber of the pump. The impeller, shaft and rolling bearing are the rotor of the pump. The suspension bearing component supports the rotor portion of the pump, which is subjected to the radial and axial forces of the pump.
 
4. In order to balance the axial force of the pump, most of the impellers of the pump are provided with a sealing ring at the front and the rear, and a balance hole is arranged on the rear cover of the impeller. Since some pumps have little axial force, the back of the impeller is not sealed. Ring and balance hole.
 
5. The axial seal ring of the pump is composed of packing gland, packing ring and packing to prevent air intake or a large amount of water leakage. If the impeller of the pump is balanced, the cavity with the soft packing is connected to the suction port of the impeller. If the liquid at the inlet of the impeller is in a vacuum state, it is easy to enter the air along the surface of the sleeve. Therefore, a packing ring is inserted in the filling chamber. A small hole in the pump cover guides the pressurized water in the pump chamber to the packing ring for sealing. If there is no balance hole in the impeller of the pump, since the liquid pressure on the back of the impeller is greater than atmospheric pressure, there is no gas leakage problem, so the packing ring may not be installed.
 
6. In order to avoid shaft wear, bushing protection is provided at the part of the shaft passing through the packing cavity. An O-ring seal is provided between the sleeve and the shaft to prevent air intake or water leakage along the mating surface.
 
7. The transmission mode of the pump is connected with the motor by lengthening the elastic coupling. The rotation direction of the pump is rotated clockwise from the driving end.
 
Model meaning
 
Pump model meaning: such as IS65-50-160A (J), ISR65-50-160B
 
IS-Single-stage centrifugal pump in accordance with international standards A-impeller outer diameter first cutting
 
ISR-Single-stage centrifugal hot water pump B-impeller outer diameter second cutting
 
65-pump suction port diameter (mm) Z-increased impeller outer diameter
 
50-pump outlet diameter (mm) J-design pump with a speed of 2900r/min
 
160-nominal nominal diameter (mm) deceleration to 1450r/min operation
 
Structure description
 
IS, ISR pump is designed according to the performance and size specified by national standard ISO2858, mainly by pump body (1), pump cover (2), impeller (3), shaft (4), seal ring (5), shaft The sleeve (8) and the suspension bearing component (12) are composed of.
 
The pump body and the part of the pump cover of the IS, ISR type pump are divided from the back side of the impeller, that is, the so-called rear door structure. The utility model has the advantages that the maintenance is convenient, and the pump body, the suction pipeline, the discharge pipeline and the electric motor are not moved during the inspection, and only the intermediate coupling of the extension coupling can be removed, and the rotor component can be withdrawn for maintenance.
 
The pump housing (ie pump body and pump cover) constitutes the pump's working chamber, impeller, shaft and rolling bearings, etc. The suspension bearing component supports the rotor component of the pump, and the rolling bearing is subjected to the radial and axial forces of the pump.
 
In order to balance the axial force of the pump, most of the pump impellers are provided with a sealing ring on the front and rear, and a balance hole is arranged on the rear cover of the impeller. Since some pumps have little axial force, there is no seal ring on the back of the impeller. Balance the holes.
 
The axial seal ring of the pump is composed of a packing gland (9), a packing ring (10), and a packing (11) to prevent intake air or a large amount of water leakage. The pump impeller is balanced. The cavity with the soft filler is connected to the suction port of the impeller. If the liquid at the inlet of the impeller is in a vacuum state, it is easy to enter the air along the surface of the sleeve. Therefore, a packing ring is installed in the filling chamber through a small hole in the pump cover. The pressure water in the pump chamber is led to the packing ring for sealing. If there is no balance hole in the impeller of the pump, since the liquid pressure on the back of the impeller is greater than atmospheric pressure, there is no gas leakage problem, so the packing ring may not be installed.
 
In order to avoid shaft wear, bushing protection is provided at the shaft through the filling chamber, and an O-ring seal is arranged between the bushing and the shaft to prevent air intake or water leakage along the mating surface.
 
The pump is driven by an extended flexible coupling that is coupled to the motor. The direction of rotation of the pump, viewed from the drive end, rotates clockwise.
 

 

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