Stainless steel gear pump produces the main cause of mechanical seal failure

The main reasons for the failure of mechanical seals produced by stainless steel gear pumps are:

1 The liquid medium has poor lubricity, and the operating pressure is overloaded, and the tracking surfaces of the two sealing surfaces are not synchronized. For example, the high speed pump speed is 20445r/min, the sealing surface center diameter is 7cm, and the line speed is up to 75m/s after the pump is running. When there is a sealing surface lag, the rotation cannot be tracked, and the sealing surface is damaged by the instantaneous high temperature. Frequent occurrence of hydraulic characteristics of the liquid medium causes the pump unit to vibrate, causing the sealing surface to be misaligned and fail. The liquid medium corrodes the sealing element, stress concentration, soft and hard material coordination, erosion, auxiliary sealing 0-ring, V-ring, concave ring is incompatible with liquid medium, deformation, etc. will cause mechanical seal surface damage failure, so The damage form should be comprehensively analyzed to find out the root cause and ensure that the mechanical seal runs for a long time.

2 The liquid medium vaporizes and expands, so that the two end faces are separated by the vaporization expansion force. When the two sealing faces are pressed together, the lubricating film is broken and the surface of the end face is overheated.

The pump transmission parts have poor coaxiality. After the pump is turned on, the end face is shaken once every revolution, and the running track of the moving ring is not concentric, causing the end face to vaporize and overheat and wear.

3 When the sealing surface is too large, the flushing fluid can't take away the heat generated by the friction pair; the flushing liquid leaks away from the gap of the sealing surface, causing the end surface to overheat and damage.

4 The seal flushing liquid orifice plate or filter is clogged, resulting in insufficient water and invalidation of the machine seal.

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Label: Main cause of mechanical seal failure caused by stainless steel gear pump

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Geotextile- woven and nonwoven Geotextile

Geotextiles are available as woven and non-woven .As liner protection, against physical damage, the non wovens are normally the answer.They are made up of fibers of polyester or polypropylene in random directions and punched together by needles during the manufacturing process.Geotextiles are commonly used to separate layers like clay and drainage and to protect liner from damage.

Geotextile is a non-woven product manufactured by combinining synthetic short yarns mechanically by using needling method. Non-Woven Geotextile has no woof and warp. Strength is achieved by combining yarns and applying thermal process. Geotextile felt is a permeable textile product which can be used with basic elements or with any material related with soil, running ground or geotechnic engineering.


Woven And Non Woven Geotextile

Polyester polyethylene nonwoven geotextile  

 PET Nowoven Geotextile

Part one:  Description of Non Woven Geotextile 

Made from PP(polypropylene) or PET(polyester) fiber by nonwoven needle punched manufacturing process. It has function of isolation, filtration, drainage, reinforcement, protection and maintenance etc.

Part Two: The Specification of non woven geotextile

Weight

100g/m2-600g/m2

Length

50m/roll,100m/roll,150m/roll or as your choice

Width

2.0m-8.0m or as your choice

Color

White/Black mainly White

Material

PET, PP

Delivery port

Qingdao

Package:

woven bag or as customers' requests

Product time

2-20 days

Note

We can do as your demand, please feel free to contact us for more information


 













Part Three:  The Application of non woven geotextile

Geotextile Production

1  Separation
The isolation of the railway dregs and the roadbed, roadbed and the soft base, surface of the airdrome and parking lot and the groundsill, different dam materials. It isolates the soil and the gravel of two kinds different

granule pathway from the groundsill or other buildings.  

2  Reinforcement
The highway, railway, soil-stone dam, breakwater, airport, backfill soil of retaining wall, slope protection, etc in which distributes the earth stress, prevents the side-displacement of the earth body and improves the earthbody stability. 

3 Protection 
It prevents the bank from being washed out, protects the bank and the bottom, prevents the water and soil from being washed away

Non Woven Geotextile For LandfillNon Woven Geotextile For Road Construction

Part Four: Specification

Weight

100g/m2-600g/m2

Length

50m/roll,100m/roll,150m/roll or as your choice

Width

2.0m-8.0m or as your choice

Color

White/Black mainly White

Material

PET, PP

Delivery port

Qingdao

Package:

woven bag or as customers' requests

Product time

2-20 days

Note

We can do as your demand, please feel free to contact us for more information













Part Four: Certification

ISO9001:2000 International Quality System Certification,

ISO14001:2004 Environment Management System Certification GB/T28001:2001 Vocational Health and Safety System Certification. Besides, our company has successfully passed on-site check on production license, and has gained "National Industrial Product Production License" and water-proof qualification. We have been the member of Chinese Technical Association on Geosynthetics and have been recognized as a "Provincial-level Enterprise Abiding by The Contract, Keeping Promise" for several successive years and so on.

 Ce Iso Geotextile

Part Six: Other information

Shipping:

7 days after receive the advance payment

Services 

1.We can provide free factory similar sample and delivery charge at your side

2.We can make sample with your design proposal at your cost. we can provide matched die-cutting document for your designing use in advance.

3.The sample can be ready right after we have discussed the processing details and confirm your payment for it in 4-7 work days. it may be extension for some special or complicate ones.

Part Seven: Contact  


contact

 

Geotextile

Geocomposite Geotextile,Polyester Non Woven Geotextile,Polyester Needle Punched Nonwoven Geotextile,Compound Geomembrane Geotextile

Shandong Tianhai New Materials Engineering Co., Ltd , https://www.chinatinhy.com