CN201141464Y - Novel gas leg group valve - Google Patents

Abstract

The utility model relates to a pneumatic supporter valve group, in particular to a pneumatic supporter valve group of a pneumatic supporter type anchor-pole drilling machine. The technical problem which is required to be solved by the pneumatic supporter valve group is to supply a pneumatic supporter valve group which can ensure that the pneumatic supporter can be positioned. The pneumatic supporter valve group comprises a tower-shaped spring, a valve core, a valve sleeve and a valve rod. A sealing ring is installed on the valve rod, the upper end of the valve rod is connected with the tower-shaped spring, the valve rod is nested in the valve sleeve, the sealing ring is exposed outside the valve sleeve, and the valve core is nested inside the lower part of the valve sleeve. The pneumatic supporter valve group is characterized in that when the sealing ring (5) and the valve sleeve (2) are positioned at the sealing position, the O-shaped sealing ring (1<-2>) can be positioned above the small hole (2<-8>) of the valve sleeve (2), when the sealing ring (5) and the valve sleeve (2) are sealed, the air inlet pressure can be obstructed, and the pneumatic supporter can not be raised continuously. By now, the air pressure inside the cylinder can be sealed by the O-shaped sealing ring (1<-2>) on the valve core (1), the pressure maintaining function can be achieved, and the positioning of the pneumatic supporter can be realized.

Description

A kind of novel air leg valve group

Technical field

The utility model relates to a kind of air leg valve group, especially a kind of air leg valve group of pneumatic supporting leg type jumbolter.

Background technique

Pneumatic supporting leg type jumbolter mainly is made up of motor drive component, swivel base parts, airframe components, control arm parts, air leg parts etc.Motor drive component is connected by airframe components with the control arm parts, and the air leg parts are connected with airframe components by the swivel base parts.Air leg control valve, motor control valve, water control valve are arranged in the control arm parts.The air leg control valve that in the past was arranged in the control arm parts comprises the turriform spring, spool and valve rod are one, valve pocket, seal ring is arranged at valve rod top, on the bottom of valve rod, the top of spool seal ring is arranged also, the turriform spring housing is on valve rod, and valve pocket is enclosed within outside spool and the valve rod, and the seal ring on valve rod top is exposed at outside the valve pocket.

Because valve rod is fixed with two seal rings, so when valve rod rose, the seal ring and the valve pocket on valve rod top were opening state, air pressure enters in the valve pocket, this moment, an air pressure part entered air leg inside, and another part is discharged from the pore of valve pocket lower end, and air leg is slow propradation.The seal ring and the valve pocket on valve rod top are opened fully, the seal ring of stem lower portion and valve pocket complete closed, and this moment, air pressure entered air leg inside fully, and air leg rises with top speed.And seal fully when seal ring and the valve pocket on valve rod top, the seal ring of stem lower portion and valve pocket are opened fully, and this moment, air pressure was discharged by air leg inside stomidium under the valve pocket, and air leg is with the automatic falling of conducting oneself with dignity.So air leg can not well be positioned at certain position.

The model utility content

Technical problem to be solved in the utility model provides a kind of orientable air leg valve of air leg group that makes.The utility model comprises on turriform spring 6, spool 1, valve pocket 2, valve rod 4, the valve rod 4 seal ring 5 is housed, the upper end of valve rod 4 is connected with turriform spring 6, valve rod 4 is enclosed within the valve pocket 2, seal ring 5 is exposed at outside the valve pocket 2, spool 1 is enclosed within inside, valve pocket 2 lower end, it is characterized in that: when seal ring 5 is in sealing station with valve pocket 2, " O " shape seal ring 1 on the spool 1 _-2Can be positioned at the aperture 2 of valve pocket 2 _-8On.When making seal ring 5 and valve pocket 2 sealings, air inlet air pressure is intercepted, and air leg no longer continues to rise.This moment, the cylinder barrel air pressure inside was also simultaneously because of " O " shape seal ring 1 on the spool 1 _-2Sealed, reached the pressurize effect, realized the location of air leg.

Description of drawings

Embodiment of the present utility model is described with reference to the accompanying drawings.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 goes out cylinder control bit schematic representation for of the present utility model.

Fig. 3 is an air leg positioning control of the present utility model position schematic representation.

Fig. 4 is an exhaust control bit schematic representation of the present utility model.

Embodiment

Fig. 1, the utility model comprise, seal ring 5, cylindrical spring 3 are housed on turriform spring 6, spool 1, valve pocket 2, valve rod 4, the valve rod 4, and valve rod 4 is enclosed within the valve pocket 2, and seal ring 5 is exposed at outside the valve pocket 2.

Lug boss 1 on the spool 1 _-1Can play the effect of positioning cylinder spring 3, there is the screw thread auxiliary hole inboard, spool 1 lower end, and spool 1 outer radial is provided with " O " shape seal groove, is with supporting " O " shape seal ring 1 _-2

The sealing chamfering of valve pocket 2 upper ends can be sealed and matched with seal ring 5, on valve pocket 2 first half outer radial grooves macropore 2 is arranged _-6, Lower Half has aperture 2 _-8

One end of cylindrical spring 3 and the lug boss 1 of spool 1 _-1Connect the cylindrical hole 2 in the other end and the valve pocket 2 _-9The lower end surface contact, because the automatic extension of spring can make spool 1 separate (during the location) automatically with valve rod 4, and the O on the may command spool 1 " shape seal ring 1 _-2Under the situation of no external force, remain on the aperture 2 of valve pocket 2 _-8The lower end.

Valve rod 4 during state, does not contact spool 1 in position.When seal ring 5 is in sealing station with valve pocket 2, " O " shape seal ring 1 on the spool 1 _-2Can be positioned at the aperture 2 of valve pocket 2 _-8On.The upper end of valve rod 4 is connected 4 with turriform spring 6 _-1 Seal ring 5, bottom porose 4 are equipped with in the place _-2, hole 4 _-2Do not penetrate valve rod 4, in the hole 4 _-2 Sidewall porose 4 _-3, in the hole 4 _-3 Bottom porose 4 _-4 Hole 4 _-3Under any circumstance guarantee the cylindrical hole 2 in valve pocket 2 _-9On the lower end surface, hole 4 _-4Under any circumstance guarantee the cylindrical hole 2 in valve pocket 2 _-9Under the lower end surface, air pressure is by the hole 4 of valve rod 4 when spool 1 is got back to original position _-2Through valve pocket hole 2 _-8Discharge.

Working principle:

Fig. 1, original position: spool 1 does not contact valve rod 4, and because of seal ring 5 and valve pocket 2 sealings, gas circuit is obstructed, air leg valve group journey closed condition.

Fig. 2 goes out the cylinder control bit: promote spool 1, spool 1 promotes valve rod 4, and seal ring 5 is elevated, and air pressure enters in the valve pocket 2 between seal ring 5 and the valve pocket 2; Because of spool 1 is raised, " O " shape seal ring 1 on the spool 1 _-2Be elevated simultaneously, intercept the aperture 2 that air pressure enters valve pocket 2 lower ends _-8So air pressure is by valve pocket 2 macropores 2 _-6Discharge, enter and realize in the air leg that air leg goes out cylinder.

Fig. 3, the positioning control position: make spool 1 return position shown in this figure, the air leg location, this moment, valve rod 4 was upheld and return with turriform spring 6, made seal ring 5 and valve pocket 2 sealings, and air inlet air pressure is intercepted, and air leg no longer continues to rise.This moment, the cylinder barrel air pressure inside was also simultaneously because of " O " shape seal ring 1 on the spool 1 _-2Sealed, reached the pressurize effect, realized the location of air leg.

Fig. 4, the exhaust control bit: make position shown in the spool leg Hui Bentu, this moment, valve rod 4 was upheld and return with turriform spring 6, made seal ring 5 and valve pocket 2 sealings, and air inlet air pressure is intercepted, and air leg no longer continues to rise.This moment, the cylinder barrel air pressure inside was also simultaneously because of the return of spool 1 aperture 2 from valve pocket 2 _-8Discharge, thus the discharging of realization cylinder barrel internal air pressure.

Claims (3)

1, a kind of novel air leg valve group, comprise on turriform spring (6), spool (1), valve pocket (2), valve rod (4), the valve rod (4) seal ring (5) is housed, the upper end of valve rod (4) is connected with turriform spring (6), valve rod (4) is enclosed within the valve pocket (2), seal ring (5) is exposed at outside the valve pocket (2), spool (1) is enclosed within valve pocket (2) inside, lower end, it is characterized in that: seal ring (5) and valve pocket (2) be when being in sealing station, " O " shape seal ring (1 on the spool (1) _-2) can be positioned at the aperture (2 of valve pocket (2) _-8) on.

2, a kind of novel air leg valve group according to claim 1, it is characterized in that: also comprise cylindrical spring (3), an end of cylindrical spring (3) is connected with spool (1), the cylindrical hole (2 in the other end and the valve pocket (2) _-9) the lower end surface contact, " O " shape seal ring (1 on the spool (1) _-2) under the situation of no external force, remain on the aperture (2 of valve pocket (2) _-8) under.

3, a kind of novel air leg valve group according to claim 1 is characterized in that: the bottom porose (4 of valve rod (4) _-2), in the hole (4 _-2) sidewall porose (4 _-3), in the hole (4 _-3) bottom porose (4 _-4), hole (4 _-3) cylindrical hole (2 in valve pocket (2) _-9) on the lower end surface, hole (4 _-4) cylindrical hole (2 in valve pocket (2) _-9) under the lower end surface.

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