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Gear Pump uses the meshing of gears to pump fluid by displacement. They are one
of the most common types of pumps for hydraulic fluid power applications.
Gear pumps are
also widely used in chemical installations to pump high viscosity fluids. There
are two main variations; external gear pumps which use two external spur gears,
and internal gear pumps which use an external and an internal spur gears
(internal spur gear teeth face inwards, see below). Gear pumps are positive
displacement (or fixed displacement), meaning they pump a constant amount of
fluid for each revolution. Some gear pumps are designed to function as either a
motor or a pump.
Features:
l Only two moving parts
l Only one stuffing box
l Non-pulsating discharge
l Excellent for high-viscosity liquids
l Constant and even discharge regardless of
pressure conditions
l Operates well in either direction
l Can be made to operate with one direction
of flow with either rotation
l Low NPSH required
l Single adjustable end clearance
l Easy to maintain
l Flexible design offers application
customization
Gear Pumps Gear Pumps,Gear Pump,Hydraulic Gear Pump,External Gear Pump Jinan Longli Hydraulic Device Co.,Ltd , http://www.longlihydro.com
(1) Comparing the weight of the lock with the handle, the heavier it shows that the material used for the lock cylinder is thicker and more wear-resistant. On the contrary, the materials are thin and easily damaged.
(2) Look at the surface finish of the lock, whether it is delicate and smooth, without spots.
(3) Open it repeatedly to see the sensitivity of the lock cylinder spring.
(4) Try to buy locks with high brand awareness to ensure quality and durability.
In addition, please note that there is an unassuming metal unlocking piece in the new lock that you bought. Do not underestimate it. If the key is lost or the lock fails, the lock can be easily removed and replaced with an unlocking tab. You can remove the keyless end of the unlocking piece, remove the handle, and then withdraw the other end with the key, install a new lock, will not damage other parts
The choice of locks should pay attention to the following three points: