CN209458432U - Pneumatic valve is acted when a kind of difference - Google Patents

Abstract

The utility model relates to act Pneumatic valve when a kind of difference, the both ends of spool are installed with gas control mechanism respectively, and gas control mechanism includes piston end cap and piston, and spool respectively can be inconsistent with the left and right ends of piston；Bore passages are equipped in valve body, valve body is equipped with air inlet, exhaust outlet and three gas outlets being connected with bore passages, and a gas outlet is located at the left side of air inlet in three gas outlets, other two gas outlet and air inlet are positioned opposite；Exhaust outlet is located at the right side of air inlet, two gas outlets in left side it is positioned opposite and they central axis it is conllinear, the central axis of a gas outlet on right side is located between the central axis of air inlet and the central axis of exhaust outlet；Spool is equipped with multiple groups annular groove, and sealing ring is installed in annular groove, and gas control mechanism can drive spool to move in valve body, gas outlet or exhaust outlet can be sealed circle blocking in motion process, it is acted when realizing three gas outlet differences, save the cost, the reliability acted when improving difference.

Description

Pneumatic valve is acted when a kind of difference

Technical field

The utility model relates to act Pneumatic valve when a kind of Pneumatic valve field, more particularly to difference.

Background technique

The Pneumatic valve of the prior art, two gas outlets, one is normal open, the other is commutation is instantaneously opened after movement, Traditional guarantee sequencing movement has to control output in equipment that there are two output signals, and execution part in order to prevent Failure or difference will also install sensor, just can guarantee movement when difference, export if it is only one control, at this moment cannot It is acted when realizing difference, and structure is complicated for the Pneumatic valve of the prior art, higher cost.

Utility model content

The purpose of this utility model is in view of the deficiencies of the prior art, to act Pneumatic valve when providing a kind of difference, can be It realizes on one Pneumatic valve and is acted when difference, save many costs, and its internal structure is simple, is quick on the draw, and improves difference When the reliability that acts, be suitable for promoting the use of.

The technology solution of the utility model is as follows:

Pneumatic valve is acted when a kind of difference, including spool and valve body, spool are installed in valve body, left and right the two of the spool End be installed with gas control mechanism respectively, respectively left gas control mechanism and right gas control mechanism, the gas control mechanism include piston end cap and The piston being sealedly connected in piston end cap, the piston end cap are fixed on the arranged on left and right sides of valve body, and the spool is able to It is inconsistent with the left and right ends of piston；Be equipped with bore passages in the valve body, valve body be equipped be connected with bore passages into Port, exhaust outlet and three gas outlets, the left side for thering is a gas outlet to be located at air inlet in three gas outlets, other two outlet Mouth is positioned opposite with air inlet；The exhaust outlet is located at the right side of air inlet, and two gas outlets in left side are positioned opposite and left side Two gas outlets central axis it is conllinear, the central axis of a gas outlet on right side is located at central axis and the row of air inlet Between the central axis of port；

The left gas control mechanism can drive spool to move right in valve body by piston, and right gas control mechanism passes through piston Spool can be driven to move downward in valve body, and from left to right be successively arranged multiple groups annular groove on spool, and annular groove It is inside installed with sealing ring, gas outlet or exhaust outlet can be sealed circle blocking during valve core movement.

Preferably, the piston end cap is equipped with screw pilot hole, position corresponding with screw pilot hole on valve body Place is equipped with mounting hole, and piston end cap is fixed on valve body by screw.

Preferably, the intracorporal bore passages of valve include the inlet channel being connected with air inlet and two, left side Left outlet passageway that gas outlet is connected, the right outlet passageway being connected with the gas outlet on right side, the row being connected with exhaust outlet Gas channel and can blocking channel, the internal diameter phase of the inlet channel, left outlet passageway, right outlet passageway and exhaust passage Together, and inlet channel, left outlet passageway, right outlet passageway and exhaust passage internal diameter be greater than can blocking channel internal diameter ruler It is very little.

Preferably, it is described can blocking channel between valve body left end face and left outlet passageway, two left outlet passageways Between inlet channel, between inlet channel and right outlet passageway, right outlet passageway and exhaust passage and exhaust passage and valve body Right end face formed channel, and during valve core movement sealing ring can blocking channel seal closure, to make air inlet Mouth is all not communicated with three gas outlets or air inlet can only be communicated with two gas outlets in left side or air inlet and three outlets Mouth all communicates.

Preferably, being from left to right equipped with five groups of annular grooves on the spool, the length of every group of annular groove is 1.5mm, the depth of every group of annular groove are 2.5mm, and the structure of five groups of annular grooves is identical, and every group of annular groove and spool It is connected by cylindrical surface with cone face between lateral surface, cylindrical surface can be matched with the bore passages of valve body.

Preferably, five groups of annular grooves are respectively that first annular groove, second annular groove, third annular are recessed Slot, fourth annular groove and the 5th annular groove, the central axis of third annular groove and the central axis of fourth annular groove The distance between it is identical as the length of right outlet passageway and close in the sealing ring and fourth annular groove in third annular groove Seal can block right outlet passageway.

The utility model has the beneficial effects that:

The Pneumatic valve of the utility model acts when realizing three gas outlet differences, seek to original state lower valve in movement into Port and three gas outlets are all not communicated with, and two, left side gas outlet communicates, and right side gas outlet is communicated with exhaust outlet；After movement first Air inlet is communicated with two, left side gas outlet, at this moment right side gas outlet reaches critical with exhaust outlet, i.e. right side gas outlet and row Port is all blocked and right side gas outlet is not communicated with exhaust outlet；After a time, air inlet again with right side gas outlet It communicates, and right side gas outlet is also not communicated with exhaust outlet, air inlet is all communicated with three gas outlets at this time；The utility model can be with The reliability acted when saving many costs, and its internal structure is simple, is quick on the draw, and improving difference, suitable popularization make With.

Detailed description of the invention

The utility model is described further with reference to the accompanying drawing:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of valve body in Fig. 1；

Fig. 3 is the top view of Fig. 2；

Fig. 4 is the bottom view of Fig. 2；

Fig. 5 is the structural schematic diagram of spool in Fig. 1；

Fig. 6 is in working condition one of schematic diagram；

Fig. 7 is in working condition the two of schematic diagram；

In Fig. 1~7: 1-air inlet；The gas outlet a in 2-left sides；The gas outlet b in 3-left sides；4-exhaust outlets；5-is right The gas outlet of side；6-spools；7-valve bodies；701-inlet channels；702-left outlet passageways；703-right outlet passageways； 704-right exhaust passages；705-can blocking channel；706-mounting holes；8-left gas control mechanisms；9-right gas control mechanisms；10— Piston end cap；1001-screw pilot holes；11-pistons；12-annular grooves；1201-first annular grooves；1202-the second Annular groove；1203-third annular grooves；1204-fourth annular grooves；1205-the five annular groove；1206-cylinders Face；1207-cone faces；13-sealing rings.

Specific embodiment

Embodiment is shown in attached drawing 1~7, acts Pneumatic valve, including spool 6 and valve body 7 when a kind of poor, spool is installed in valve body Interior, the left and right both ends of the spool are installed with gas control mechanism respectively, respectively left gas control mechanism 8 and right gas control mechanism 9, described Gas control mechanism includes piston end cap 10 and the piston 11 that is sealedly connected in piston end cap, and the piston end cap is fixed on valve body Arranged on left and right sides, the spool are able to inconsistent with the left and right ends of piston；Bore passages, valve body are equipped in the valve body Air inlet 1, exhaust outlet 4 and three gas outlets being connected with bore passages are equipped with, three gas outlets include the outlet in left side Mouth a2, the gas outlet b3 in left side and the gas outlet 5 on right side；The gas outlet a2 in left side is located at a left side for air inlet in three gas outlets Side, the gas outlet b3 in left side and the gas outlet 5 on right side and air inlet are positioned opposite；The exhaust outlet 4 is located at the right side of air inlet, The gas outlet a2 in the left side and gas outlet b3 in left side is positioned opposite and the central axis of two gas outlets in left side is conllinear, right side The central axis of gas outlet 5 is located between the central axis of air inlet 1 and the central axis of exhaust outlet 4；

The left gas control mechanism can drive spool to move right in valve body by piston, and right gas control mechanism passes through piston Spool can be driven to move downward in valve body, and from left to right be successively arranged multiple groups annular groove 12 on spool, and annular is recessed Sealing ring 13 is installed in slot, gas outlet or exhaust outlet can be sealed circle blocking during valve core movement.

The piston end cap is equipped with screw pilot hole 1001, is equipped at position corresponding with screw pilot hole on valve body Piston end cap is fixed on valve body by mounting hole 706 by screw.

The intracorporal bore passages of valve include the inlet channel 701 being connected with air inlet, are connected with left side gas outlet Logical left outlet passageway 702, is connected at the right outlet passageway 703 that is connected with the gas outlet on right side with the exhaust outlet on right side Right exhaust passage 704 and can blocking channel 705, the inlet channel, left outlet passageway, right outlet passageway and right exhaust passage Internal diameter is identical, and inlet channel, left outlet passageway, right outlet passageway and right exhaust passage internal diameter be greater than and can block The internal diameter in channel.

It is described can blocking channel between valve body left end face and left outlet passageway, left outlet passageway and inlet channel it Between, between inlet channel and right outlet passageway, between right outlet passageway and right exhaust passage and on the right side of right exhaust passage and valve body The channel formed between end face, and during valve core movement sealing ring can blocking channel seal closure, to make air inlet Mouth is all not communicated with three gas outlets or air inlet can only be communicated with two, left side gas outlet or air inlet and three gas outlets All communicate.

Five groups of annular grooves are from left to right equipped on the spool, the length of every group of annular groove is 1.5mm, every group of annular The depth of groove is 2.5mm, and the structure of five groups of annular grooves is identical, and passes through between every group of annular groove and the lateral surface of spool Cylindrical surface 1206 is connected with cone face 1207, and cylindrical surface can be matched with the bore passages of valve body.

Five groups of annular grooves are respectively first annular groove 1201, second annular groove 1202, third annular groove 1203, fourth annular groove 1204 and the 5th annular groove 1205, the central axis and fourth annular groove of third annular groove The distance between central axis it is identical as the length of right outlet passageway, and sealing ring and fourth annular in third annular groove Sealing ring in groove can block right outlet passageway.

The Pneumatic valve action state of the utility model divides the following three stage:

First stage: as shown in Fig. 1: gas enters in valve body from air inlet 1, and the outlet passageway of three gas outlets is close Seal closure, the gas outlet a2 in left side, the gas outlet 5 of the gas outlet b3 in left side and right side and air inlet 1 are all not communicated with, but left side Gas outlet a2 and the gas outlet b3 in left side communicate, the gas outlet 5 on exhaust outlet 4 and right side communicates.

Second stage: as shown in Fig. 6: gas enters in valve body from air inlet 1, and left gas control mechanism makes piston push spool It is mobile, when being moved to certain position, communicate air inlet 1 and the gas outlet b3 of the gas outlet a2 in left side and left side all, at this moment The gas outlet 5 on right side is blocked by piston, is not communicated with air inlet 1, and at this moment right side gas outlet reaches critical with exhaust outlet, i.e. right side Gas outlet and exhaust outlet are all blocked and right side gas outlet is not communicated with exhaust outlet.

Phase III: as shown in Fig. 7: gas enters in valve body from air inlet 1, and left gas control mechanism makes piston push spool It is mobile, when being moved to certain position, communicate air inlet 1 and the gas outlet b3 of the gas outlet a2 in left side and left side, using 10 milliseconds or so of movement, air inlet 1 are also communicated with the gas outlet 5 on right side, thus reached air inlet 1 can simultaneously with left side The gas outlet 5 of gas outlet a2, the gas outlet b3 in left side and right side communicate, and at this moment the gas outlet 5 on right side is not communicated with exhaust outlet 4.

Utility model works principle:

When gas control mechanism does not supply, piston is not moved, and air inlet 1 and gas outlet 2,3,5 are not communicated with, but 2,3 phase of gas outlet Logical, gas outlet 5 and exhaust outlet 4 communicate, and the gas control mechanism of this left and right two is in off state.

When left gas control mechanism supplies, piston is mobile, and air inlet 1 is first communicated with 2 gas outlet 3 of gas outlet, when using one Between (10 milliseconds or so), air inlet 1 is communicated with gas outlet 5, reaches air inlet 1 and gas outlet 2, gas outlet 3 and gas outlet 5 simultaneously It communicates, gas outlet 5 is not communicated with exhaust outlet 4 at this time, and left gas control mechanism is in an open state at this time.

Similarly, when right gas control mechanism supplies, piston is mobile, and air inlet 1 is first communicated with gas outlet 5, at this moment gas outlet 5 and row Port 4 is not communicated with, and gas outlet 2 and gas outlet 3 communicate, using a time (10 milliseconds or so), air inlet 1 and gas outlet 2, Gas outlet 3 communicates, and reaches air inlet 1 and communicates simultaneously with gas outlet 2, gas outlet 3, gas outlet 5, and right gas control mechanism is to open at this time State.

Above-described embodiment is the specific descriptions carried out to the utility model, is only carried out furtherly to the utility model It is bright, it should not be understood as the restriction to scope of protection of the utility model, those skilled in the art is according in above-mentioned utility model Appearance is made some nonessential modifications and adaptations and is each fallen within the protection scope of the utility model.

Claims (6)

1. acting Pneumatic valve when a kind of difference, including spool and valve body, spool are installed in valve body, it is characterised in that: the spool Left and right both ends be installed with gas control mechanism respectively, respectively left gas control mechanism and right gas control mechanism, the gas control mechanism include live Plug end cap and the piston being sealedly connected in piston end cap, the piston end cap are fixed on the arranged on left and right sides of valve body, the spool It is able to inconsistent with the left and right ends of piston；Bore passages are equipped in the valve body, valve body is equipped with and bore passages phase Air inlet, exhaust outlet and three gas outlets of connection, the left side for thering is a gas outlet to be located at air inlet in three gas outlets, in addition Two gas outlets and air inlet are positioned opposite；The exhaust outlet is located at the right side of air inlet, and two gas outlets in left side are with respect to cloth It sets and the central axis of two gas outlets in left side is conllinear, the central axis of a gas outlet on right side is located at the center of air inlet Between axis and the central axis of exhaust outlet；

The left gas control mechanism can drive spool to move right in valve body by piston, and right gas control mechanism can by piston Driving spool moves downward in valve body, and multiple groups annular groove is from left to right successively arranged on spool, and annular groove is built-in Equipped with sealing ring, gas outlet or exhaust outlet can be sealed circle blocking during valve core movement.

2. acting Pneumatic valve when a kind of difference according to claim 1, it is characterised in that: the piston end cap is equipped with screw Location hole is equipped with mounting hole on valve body, piston end cap is fixed on valve by screw at position corresponding with screw pilot hole On body.

3. acting Pneumatic valve when a kind of difference according to claim 1, it is characterised in that: the intracorporal bore passages packet of valve Include the inlet channel being connected with air inlet, the left outlet passageway being connected with two, left side gas outlet, the gas outlet with right side The right outlet passageway that is connected, the exhaust passage being connected with exhaust outlet and can blocking channel, the inlet channel, left outlet are logical Road, right outlet passageway are identical with the internal diameter of exhaust passage, and inlet channel, left outlet passageway, right outlet passageway and exhaust The internal diameter in channel be greater than can blocking channel internal diameter.

4. acting Pneumatic valve when a kind of difference according to claim 3, it is characterised in that: it is described can blocking channel be that valve body is left Between side end face and left outlet passageway, between two left outlet passageways and inlet channel, inlet channel goes out with right outlet passageway, the right side Between the gas channel and exhaust passage and channel of exhaust passage and the formation of valve body right end face, and sealing ring during valve core movement Can blocking channel seal closure, to make that air inlet and three gas outlets are all not communicated with or air inlet can only be with left side Two gas outlets communicate or air inlet is all communicated with three gas outlets.

5. acting Pneumatic valve when a kind of difference according to claim 3, it is characterised in that: be from left to right equipped on the spool Five groups of annular grooves, the length of every group of annular groove are 1.5mm, and the depth of every group of annular groove is 2.5mm, five groups of annular grooves Structure it is identical, and be connected between every group of annular groove and the lateral surface of spool by cylindrical surface and cone face, cylindrical surface energy It is enough to be matched with the bore passages of valve body.

6. acting Pneumatic valve when a kind of difference according to claim 5, it is characterised in that: five groups of annular grooves are respectively First annular groove, second annular groove, third annular groove, fourth annular groove and the 5th annular groove, third annular are recessed The distance between the central axis of the central axis of slot and fourth annular groove is identical as the length of right outlet passageway, and third ring The sealing ring in sealing ring and fourth annular groove in connected in star can block right outlet passageway.