CN2156938Y - Vertical slide air valve for jig - Google Patents

Abstract

The utility model relates to a vertical sliding air valve for a jig machine, comprising an electromagnetic valve, a cylinder piston, a valve core which is at the lower end of a piston rod and is connected with a hollow column, and a valve sleeve which is matched with the valve core in sliding way. When the valve core moves upwards and downwards, the ring mouth of the valve core and the ring mouth of the valve sleeve can be staggered or coincident, which can make the utility model realize the air intake and the exhaustion. The utility model can greatly reduce the quantity of the air consumption. The utility model has the advantages of low power consumption, low noise, and long service life.

Description

Vertical slide air valve for jig

The utility model belongs to the parts of sorting mineral jigging machine, particularly is applicable to the vertical jig piston valve of coal separation jigging machine.

Jigging is one of gravity separation method, and to be material in the fluctuating flow that rises and descend realize sorting by density is different for it, and the frequency of this fluctuating flow and amplitude are to be acted directly on by air-valve on the water surface of air chamber by compressed air to form.The Ba Dake jigging machine that the early seventies Germany is developed into has adopted electromagnetic vertical type cover plate air-valve, and the Ba Dake jigging machine of present domestic introduction adopts this air-valve exactly.Shown in " coal preparation machine " the 18th page of Fig. 3-18 that Chinese coal industry publishing house published in 1979, the primary structure of electromagnetic vertical type cover plate air-valve, the air chamber of jigging machine communicates with air intake valve and exhaust valve, the air intake valve is contained in the low pressure bellows, exhaust valve is contained in the air draft case, control switching time of air intake valve, exhaust valve by the switching of the magnetic valve electricity time, make air intake valve and exhaust valve alternating movement, realize air intake and air draft.Wherein the air intake valve is the pneumatic cover plate that piston rod is connected below with exhaust valve, when the pneumatic cover plate of air intake valve covers the mouth of pipe, low-pressure air acts on the back side of pneumatic cover plate, blast is high more, active force is big more, when cylinder piston moves upward, must cover plate could be opened with very big power, so high-pressure blast consumption and power consumption increase; After pneumatic cover plate was opened, the upper and lower pressure reduction pop-off of cover plate made cylinder piston high speed upper punch, very easily causes and hits cylinder, and cylinder is damaged; The pneumatic cover plate and the mouth of pipe open and close bump repeatedly, and piston, cylinder body and cover plate are reduced service life.

Task of the present utility model provides the vertical jig piston valve of a kind of jigging machine.

Its main points are device air intake valves in the low pressure bellows, and the exhaust valve of device in the air draft case, be at hollow cylinder spool of cylinder piston rod lower end connection, middle part at spool has a spool circle mouth along perisporium, this spool is slidingly matched with the valve pocket that connects firmly on bellows, has valve pocket circle mouth on valve pocket.It is descending that piston drives spool, spool circle mouth and the valve pocket circle is salty closes, and air-valve is opened; Piston drive spool is up, and spool circle mouth and valve pocket circle mouth stagger, and air-valve cuts out, and so action realizes air intake and air draft.

Advantage of the present utility model: during the work of vertical jig piston valve, the slip of spool is not subjected to the influenced by wind pressure of low-pressure air, only need overcome and valve pocket between frictional force, this frictional force only be 1/3rd of pneumatic cover plate valve opening force, greatly reduces blast consumption, reduction power consumption; Collision with other part does not take place in valve core movement, and noise is little, long service life.

Describe the utility model structure and embodiment in detail below in conjunction with accompanying drawing.

Vertical jig piston valve front section view shown in Figure 1.

Vertical jig piston valve shown in Figure 2 system embodiment.

As shown in Figure 1, vertical jig piston valve comprises cylinder 1, with the connecting rod 5 that is threaded, connects firmly hollow cylinder spool 7 with nut 6 by gusset 8 in the lower end of cylinder piston rod 4 on connecting rod, this spool is generally made with aluminium alloy, has spool circle mouth 9 on the perisporium of the middle part of spool one; Spool and valve pocket 10 are slidingly matched, and have two road valve pocket circle mouths 11 at the perisporium of valve pocket, and this valve pocket is generally cylinder iron made; The lower end installing rubber buffer 12 of valve pocket is in order to buffering collision of closed; Valve pocket is connected firmly on bellows by bellows connected nut 3, and cylinder is connected firmly on valve pocket by valve pocket connected nut 2; The lower port of valve pocket is connected with the airduct 13 that leads to air chamber.

Vertical as shown in Figure 2 jig piston valve system acting air intake valve is contained in the low pressure bellows 18; Exhaust valve is contained in the air draft case 19, and communicates with atmosphere.The air intake valve is identical with the exhaust valve structure.High-pressure blast enters source of the gas three disjunctors 15 from high-pressure air hose 14, after filtration, enter magnetic valve 16 behind decompression and the oil sprayer.When the magnetic valve of air intake valve cut off the power supply, high-pressure blast entered 17 times side spaces of cylinder piston, and piston drives spool 7 and moves upward, and the circle mouth on spool and the valve pocket 10 is staggered, and the air intake valve is in closed condition; Magnetic valve 16 energisings of exhaust valve meanwhile, high-pressure blast enters cylinder piston 17 superjacent air spaces, and piston drives spool 7 and moves downward, and makes salty the closing of circle of spool and valve pocket, and exhaust valve is opened, and the air chamber waste gas enters atmosphere, jig bed whereabouts implantation.The magnetic valve of exhaust valve outage subsequently, exhaust valve is closed; The magnetic valve energising of air intake valve, spool moves downward, and the air intake valve is opened, and the low-pressure air in the low pressure bellows enters air chamber 20, promotes water surface upper punch, and jig bed is held up, and carries out sorting.So repeat, make air intake valve and exhaust valve alternating movement, realize air intake and air draft, the setting valve of adjusting timer changes the switching electricity time of magnetic valve, can control the switching time of air intake valve, exhaust valve, to obtain best jigging cycle.

Claims (4)

1, the vertical jig piston valve of a kind of jigging machine includes magnetic valve, cylinder, piston and forms, and it is characterized in that connecting in the cylinder piston rod lower end spool, the valve pocket that is slidingly matched with spool.

2,, it is characterized in that spool is a hollow cylinder according to the described vertical jig piston valve of claim 1.

3,, it is characterized in that on the perisporium of spool middle part, having spool circle mouth one according to claim 1 or 2 described vertical jig piston valves.

4,, it is characterized in that on the perisporium of valve pocket, having two road valve pocket circle mouths according to the described vertical jig piston valve of claim 1.