Marine hydraulic device pump HSJ120-46 three-screw pump

1: Overview
The series of submersible three-screw pumps is a small-volume, low-noise, low-efficiency, high-life, long-life lubricating oil delivery product specially developed for lubrication equipment based on market demand. It is produced in accordance with B/ design. It consists of a driving screw and two driven screws that are meshed with each other and fixed in a bushing. The screw profile is composed of a double-headed cycloid and arc tooth shape. The screw pair and bushing are installed in the pump body. When the driving screw rotates under the driving of the prime mover, the main and driven screws form a sealed cavity under a certain meshing spiral surface length. The driven screw is pushed by the conveyed liquid medium to rotate due to the pressure difference on both sides of the spiral surface. At this time, the conveyed liquid enters the pump. The suction port enters the sealing chamber evenly and continuously along the axial direction, and smoothly and without agitation reaches the discharge chamber from the pump suction chamber, thereby achieving the function of transporting liquid media.
2. Structural Features
It has strong self-priming ability and can transport liquid media that is lubricating and does not contain solid particles.
Compact structure and high mechanical efficiency.
Low noise, low vibration, stable performance, easy use and maintenance, and long life.
Designed with a special oil storage device, it can avoid the trouble of refueling during the second startup.
It has a variety of connection structure forms to facilitate design and selection.
For pump outlet diameters (inclusive) and below, the inlet and outlet connections adopt cylindrical pipe threads, and above, flange connections are used.
Three: Application of three-screw pump
in
steel metallurgy and ironmaking blast furnace hydraulic system engineering

Special three-screw pump for casting platform hydraulic system pump station Pump
Special three-screw pump for furnace front hydraulic system
Special three-screw pump for blast furnace hot air hydraulic system
Special three-screw pump for galvanizing line hydraulic system
Steel pipe rolling
Stripping Special three-screw pump for hydraulic system in tube machine area
Special three-screw pump for thin oil lubrication system of main motor of roughing mill
Three-screw pump for oil film bearing lubrication system
Steel plant blast furnace dry
Thin oil Lubrication system oil pump
Steel plant heating furnace hydraulic station low-pressure oil pump circulation pump three-screw oil pump
Blast furnace top conventional hydraulic system three-screw pump device
Blast furnace gas scrubber hydraulic system three-screw pump device
Blast furnace gas sealing oil pump three-screw pump device
Steel plant blast furnace front hydraulic station three-screw pump device
Large package sliding nozzle hydraulic system low-pressure oil pump circulation pump three-screw oil pump
Power plant hydraulic system low pressure Oil pump circulating pump three-screw oil pump
Tin plating line hydraulic system low pressure oil pump circulating pump three screw oil pump
Galvanizing line hydraulic system low pressure oil pump circulating pump three screw oil pump
Galvanizing line auxiliary hydraulic system low pressure circulation Oil pump three-screw pump unit
Turning machine hydraulic system low-pressure oil pump circulation pump three-screw oil pump vertical three-screw pump unit
Explosion-proof thin oil station low-pressure oil pump circulation pump three-screw oil pump
Steel pipe production equipment hydraulics System low-pressure oil pump circulating pump three-screw oil pump
Steel coil turning device hydraulic station low-pressure oil pump circulating pump three-screw oil pump
Special low-pressure three-screw pump for the hydraulic system of the stainless steel preparation station
Special three-screw pump for the hydraulic system of the lead unit Screw pump device
Three-screw pump motor unit for the hydraulic system of the splicing unit
Three-screw pump device for the circulating oil pump in the low-pressure system of the smoothing machine
Three-screw pump for the hydraulic system of the stainless steel recoiling unit
< br/>Basic performance parameters of three-screw pump
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> Nominal flow rate

> Nominal pressure

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Four performance characteristics
It has strong self-priming ability and can transport liquid media that is lubricating and does not contain solid particles.
Compact structure, no need for synchronous gear transmission, high mechanical efficiency
Low noise and vibration, stable performance, long service life, easy maintenance
Specially equipped with oil storage device, which can be started in the second time It avoids the trouble of refueling
It has a variety of connection structure forms, which is convenient for design and selection
For pump outlet diameters (inclusive) and below, the connection form of the inlet and outlet oil ports adopts cylindrical pipe threads, and above, flanges are used join.
Five application scopes

The series is widely used in the transmission of various media with lubrication or partial lubrication requirements and no solid particles, such as:
Lubricant liquid: hydraulic oil , mineral oil, machine oil, lubricating oil, quenching oil, gear oil, transformer oil, turbine oil, water glycol, crude oil, animal and vegetable oil, etc.
Low lubricity liquids: light diesel, heavy diesel, fuel oil, fuel Oil, heavy oil, residual oil, thin oil containing wax, coolant, saponified liquid, etc.
Viscous liquids: various synthetic rubber liquids, artificial glue liquids, emulsions, etc.
Installation of six pumps
Before installing the pump, check the coaxiality of the pump and the motor, and turn the coupling by hand to see if there is any sticking.
If a single pump needs to be assembled with the motor, the key and keyway of the pump head should be deburred. engine oil, and then install the pump coupling on the pump shaft
When installing the oil suction and oil discharge pipes of the pump, their pipe diameters must not be smaller than the pump's oil suction and oil discharge diameters. The oil suction pipes must not be too long or have too many turns. Otherwise, the working performance of the pump will be affected
All pipeline gate valves, etc. should be flushed before installation, otherwise the residues during installation: such as welding slag, rigid particles, nuts, screws, etc. will damage the internal parts of the pump and affect the performance of the pump. Pump operation and service life
The pump must be balanced on the mailbox and the pump connection bolt must be tightened.
After assembly, the coupling should be able to be easily rotated by hand

When two or more pumps are installed on the same main line, a check must be installed on the oil discharge pipe near the pump Valve
Seven: Pre-sales service Professional technical engineers will serve you and provide you with accurate and suitable selection combinations to ensure that customers choose the best cost-effective products. Provide inspection reception: We welcome you to visit the company for on-site inspection anytime and anywhere, and provide you with any convenience.
In-sale service Whether you are a foreign customer or a domestic customer, whether you are our old customer or our new friend, whether your contract amount is large or small, we will treat you honestly, fairly, enthusiastically and rigorously Provide comprehensive product information with the same treatment: product parameters, product installation dimensions, etc. Schedule production in time to ensure accurate delivery time. We guarantee to strictly implement the various terms stipulated in the contract on time, quality and quantity, and provide customers with value-for-money services, such as product installation training, etc.
After-sales service We have established a complete after-sales service system to serve you around the clock. Provide product installation guidance to meet your various needs around the clock. All products are guaranteed for one year, and we will provide you with free service during the warranty period. We provide all kinds of accessories for our products at the lowest cost price throughout our lives.