2019年11月11日星期一

Piston pump structure, type and working principle analysis

Piston pump in the hydraulic system plays an important role, relying on the plunger reciprocating in the cylinder, so that the volume of the sealed working chamber to change to achieve oil, oil pressure. As an important industrial equipment, we need to understand its structure, classification and working principle. Piston pump structure Piston pump mainly by the power end and hydraulic end of two major components, and attached to the pulley, check valve, safety valve, voltage regulator, lubrication system and other components. Power end (1) Crankshaft Crankshaft is one of the key components in this pump. The use of crankshaft integral type, it will complete the rotary motion into a reciprocating linear motion of the key step, in order to make it balanced, the crank pin and the center of 120 °. (2) The connecting rod rod transmits the thrust on the plunger to the crankshaft, and converts the rotational movement of the crankshaft into the reciprocating motion of the plunger. The cross section of the rod takes the shape of "I" Watts form, small head tile bushings, and its positioning. (3) crosshead Cross swinging connecting rod and reciprocating plunger, it has a guide role, which is connected with the connecting rod, connected with the plunger clamp. (4) floating sleeve floating sleeve fixed to the base, which on the one hand play the role of oil tank and grease trap from the other hand, the crosshead guide rod from the role of a floating point of support, can improve the life of moving seal components . (5) base is installed on the power end and connected to the hydraulic end of the force member, the rear bearing on both sides of the hole, the front with the hydraulic end of the positioning pin hole to ensure that the center of the slide and the pump The center of the head is neutral, and a drain hole is provided on the front side of the base to drain the leaking liquid.

Gabion Mesh are rectangular baskets made of heavily galvanized, double twisted, steel woven wire mesh. The single unit constructed baskets are assembled, laced together and then filled with stone to form a monolithic structure. Gabion mesh and Reno mattresses are used for retaining walls, sound barriers, channel linings, slope stabilization, dams and weirs. They are particularly effective in restoring the environment and promoting vegetation growth.

1. Gabion mesh material:

(1) Galvanized steel wire: diameter 2.0MM-4.0MM, tensile strength >350Mpa, hot dipped
galvanized zinc coating:35-50g/m2 high zinc:240g / m2.
(2) Zinc 5% Aluminum - wire diameter 1.0MM-3.0MM, tensile strength >350Mpa.
2.Gabion Process:
wire drawing---galvanized--- galvanized after weaving or galvanized before weaving.
3.Gabion Box sizes:

Gabion Size(m)

Mesh Model

8x10

6x8

Length

Width

Height



Mesh wire diameter

Gal. weight

Mesh wire diameter

Gal. weight

2m

1m

1m

2.7mm

>245g/m2

2.0mm

>215g/m2

3m

1m

1m

Selvedge wire diameter

Gal. weight

Selvedge wire diameter

Gal. weight

4m

1m

1m

3.4mm

>265g/m2

2.7mm

>245g/m2

6m

1m

1m

Lacing wire 2.7mm

Lacing wire 2.0mm

4.Applications
1)Control and guide of water or flood
2)Flood bank or guiding bank
3)Preventing of rock breaking
4)Water and soil protection
gabion basket






Gabion Mesh

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