CN1167887A

CN1167887A - Pilot solenoid valve

Info

Publication number: CN1167887A
Application number: CN 97104589
Authority: CN
Inventors: 佐藤秀治; 宫添真司; 石川诚
Original assignee: SMC Corp
Current assignee: SMC Corp
Priority date: 1996-04-03
Filing date: 1997-04-02
Publication date: 1997-12-17
Anticipated expiration: 2017-04-02
Also published as: EP0800002B1; DE69708956T2; EP0800002A1; JPH09273651A; KR970070676A; DE69708956D1; CN1065604C; TW366392B

Abstract

The invention provides a fluid-controling electromagnetic valve, wherein a main valve 3 and solenoid-driven pilot valves 4A and 4B are independently installed on a manifold base 2, separate from each other. The manifold base houses a feeding line passage, through which feeding lines to the pilot valves pass. The manifold base includes a waterproof cover 5 that covers the pilot valves and the energization system, extending from the feeding line to the pilot valve. The main valve 3 may be a single or double solenoid.

Description

Pilot solenoid valve

The present invention relates to pilot solenoid valve, this pilot solenoid valve is arranged on the integrated package valve seat, by the valve body of pilot valve to row's hydraulic control fluid drives main valve, switches the outlet opening of main valve, it is communicated with supply opening and discharge aperture, and above-mentioned pilot valve is by solenoid-activated.

Known pilot solenoid valve have the main valve that is arranged on the integrated package valve seat and be installed on this main valve, by the pilot valve of solenoid-activated, give the valve body of row's hydraulic control fluid drives main valve by pilot valve, switch the outlet opening of main valve, it is communicated with supply opening and discharge aperture.

Above-mentioned known pilot solenoid valve, when using in the higher operating environment of humidity, for the fault that prevents to cause because of moisture, pilot valve and electrifying system thereof with electric part must waterproof.But only make simple low-cost waterproof to being directly installed on pilot valve and electrifying system thereof on the main valve, damp proof structure is difficult, because cost height, so, be arranged on whole solenoid valve on the integrated package valve seat, that comprise a plurality of main valves with handles such as covers and cover that to carry out waterproof be simple effective method more.

But, this waterproof method, when maintenance, maintenance and renewal part of main valve or pilot valve etc., even to beyond the pilot valve, do not need the part of waterproof to keep in repair, when maintaining, also must remove cover, and remove waterproof, like this integral body, not only cause fault sometimes, and the maintenance, the maintenance operation also pretty troublesome.In addition, usually in pilot solenoid valve, under cold situation or during fault with the opening the spare time of its pilot valve of manually-operable or main valve, be provided with manual operation unit, when this manual operation unit of operation, to remove cover similarly, remove waterproof to integral body.

The object of the present invention is to provide a kind of simply constructed, can be only pilot valve and electrifying system thereof be carried out the pilot solenoid valve of waterproof.

Another object of the present invention provides a kind of pilot solenoid valve, the part beyond the pilot valve that needs waterproof and the electrifying system thereof being keeped in repair, when maintenance, renewal part, can not removing the waterproof that needs anti-water section, irrespectively handles with anti-water section.

Another object of the present invention provides a kind of pilot solenoid valve, when above-mentioned waterproof, can adopt the cover of common-use size to the pilot solenoid valve with 2 pilot valves or 1 pilot valve, can make the part generalization.

Another object of the present invention provides a kind of pilot solenoid valve, is provided with manual operation unit on pilot solenoid valve, and the waterproof ground that can not remove pilot valve etc. is this manual operation unit of operation easily.

In order to realize stating purpose, pilot solenoid valve of the present invention, the pilot valve of main valve and driving valve body of main valve is being set on the integrated package valve seat, main valve switches outlet opening makes it be communicated with supply opening and discharge aperture, pilot valve is by solenoid-activated, driven along its axial direction to the valve body of the hydraulic control fluid of arranging with main valve by pilot valve, the stream that switches between above-mentioned opening makes its connection; It is characterized in that, above-mentioned main valve and pilot valve are separated, they are arranged on the axial direction of valve body of main valve side by side and are arranged on independently on the integrated package valve seat, be provided with the supply lines that is used to wear supply lines and hold path in this integrated package valve seat, this supply lines is used for the pilot valve power supply; On the integrated package valve seat, water proof cover is installed, this water proof cover cover pilot valve and from the supply lines to the pilot valve between electrifying system.

In the above-mentioned pilot solenoid valve, on the integrated package valve seat, can be provided in the axial direction of valve body of main valve to two faces that are provided with or perpendicular to the direction of this axis by the pilot valve of solenoid-activated, these two by the pilot valve of solenoid-activated with the valve body of main valve along its axial direction respectively toward just or in the other direction driving.

In the above-mentioned pilot solenoid valve, hydraulic control manually-operable button can be set on pilot valve, on water proof cover with this hydraulic control manually-operable button corresponding position, be provided with and push the manual operation unit that can operate this hydraulic control manually-operable button from the outside; By pushing the connection between the changeable solenoid valve stream of hydraulic control manually-operable button.

In the pilot solenoid valve of above-mentioned structure, because and separately by the pilot valve of solenoid-activated with main valve, and they are arranged on the integrated package valve seat independently, so, can only be coated with the pilot valve and the corresponding electrifying system thereof of electric part with water proof cover, realize the waterproof of pilot solenoid valve with simple structure.

Owing to be not to be provided in the whole solenoid valve that comprises a plurality of main valves on the integrated package valve seat with water proof cover handle to cover and carry out waterproof, so, to the part that does not need waterproof keep in repair, when maintaining, needn't take off water proof cover and remove waterproof, can irrespectively carry out maintenance, the maintenance of this part with anti-water section.On the other hand, the part of need waterproof is being keeped in repair, when maintaining,, can not influence other parts ground and handle as long as the water proof cover of required part is taken off.

In addition, when carrying out above-mentioned waterproof, since toward just or opposite direction drive two of the valve body of main valve face that the is provided with assortments by the pilot valve of solenoid-activated on the integrated package valve seat, cover being arranged on these pilot valve and electrifying systems that are provided with on the face with water proof cover, so, for bipitch tubular type solenoid valve or have the single solenoid formula solenoid valve of 1 pilot valve with 2 pilot valves, can use general water proof cover, not only make the part generalization, and hold path owing in the integrated package valve seat, be provided with the supply lines of pilot valve power supply in addition, so also can carry out the waterproof of electrifying system simultaneously.

In addition, in the above-mentioned pilot solenoid valve, because on the integrated package valve seat, the axial direction that is provided in valve body of main valve toward two faces that are provided with that just or in the other direction drive valve body of main valve or perpendicular to the direction of this axis by the pilot valve of solenoid-activated, so, can make pilot solenoid valve and be provided with the corresponding compact structure in place.

In addition, in the above-mentioned pilot solenoid valve, because the corresponding position of hydraulic control manually-operable button on water proof cover and pilot valve, be provided with the manual press part of this hydraulic control manually-operable button of pressing operation, so, in the time can not driving valve body of main valve, can not remove the waterproof ground of pilot valve and operate this hydraulic control manually-operable button easily because of accident pilot valves such as power failures.

Fig. 1 is the longitudinal plane profile of A-A position among Fig. 2, expression the present invention the 1st embodiment's structure.

Fig. 2 is the planimetric map of the state that is connected with of expression pilot solenoid valve of the present invention.

Fig. 3 is the front elevation of the state that is connected with of expression pilot solenoid valve shown in Figure 2.

Fig. 4 is the profile of the state that is connected with of expression pilot solenoid valve shown in Figure 2.

Fig. 5 is the present invention the 2nd embodiment's a vertical disconnected profile.

Fig. 6 is the present invention the 3rd embodiment's a vertical disconnected profile.

Fig. 7 is the vertical disconnected profile of the 3rd embodiment's variation.

Fig. 8 is the present invention the 4th embodiment's a vertical disconnected profile.

Fig. 9 is the planimetric map of the 4th embodiment's variation.

Figure 10 is the present invention the 5th embodiment's a vertical disconnected profile.

Below, with reference to the description of drawings embodiments of the invention.

Fig. 1 to Fig. 4 represents the 1st embodiment of the present invention.Among Fig. 1, have the face that is provided with and the 1st of main valve 3, the face that is provided with of the

2nd pilot valve

4A, 4B on the integrated package valve seat 2 of pilot solenoid valve 1, main valve 3 and the 1st, the

2nd pilot valve

4A, 4B separate along the length direction of this integrated package valve seat 2.Expression is installed in it with single solenoid formula main valve 3 and is provided with on the face among Fig. 1, and will be installed in above-mentioned pilot valve by the 1st pilot valve 4A of solenoid-activated state (the A-A section of Fig. 2) on the face is set.In addition, in Fig. 1, dot the state on the face of being provided with that the 2nd pilot valve 4B is installed in the 2nd pilot valve 4B, this is the installment state of the 2nd pilot valve 4B when being illustrated in the pilot solenoid valve 1A (see figure 2) with the bipitch tubular type.Under situation, the 2nd pilot valve 4B is not installed with single solenoid formula main valve 3.Also have the water proof cover 5 that can cover this two

pilot valve

4A, 4B in addition.

Mounting the integrated package valve seat 2 of above-mentioned main valve and pilot valve, usually as shown in Figures 2 and 3, is to use a plurality of with being connected with.As shown in Figure 1, in integrated package valve seat 2, have the distribution that runs through its pressure fluid that is connected with direction supply stream the 8, the 1st and the

2nd discharge stream

9A, 9B, hydraulic control supply stream ps, hydraulic control discharge stream pe and electrifying system and hold path 10, also have the 1st and the

2nd delivery outlet

11A, 11B at the front-end face opening.Above-mentioned supply stream 8,

discharge stream

9A, 9B and

delivery outlet

11A, 11B are provided with the face opening by the main valve of path on integrated package valve seat 2 separately.What in addition, hydraulic control supplied with that stream ps and hydraulic control discharge that the pilot valve of stream pe on integrated package valve seat 2 be provided with the 1st in the face and the

2nd pilot valve

4A, 4B is provided with the position opening.Distribution holds path 10 and is communicated with the sleeve assembly department 10a that the face opening is set at its pilot valve by path.

Above-mentioned

stream

8,9A, 9B that the main valve on the integrated package valve seat 2 is provided with the face opening be located at this main valve be provided with face below.Hydraulic control is supplied with stream ps and hydraulic control and is discharged stream pe and be located at main valve and position or this position and pilot valve be set below between the position is set.Above-mentioned distribution holds the below that path 10 is located at the face that is provided with of pilot valve 4A, 4B.Pilot valve in this integrated package valve seat 2 be provided with face below because big stream etc. are less, hold path 10 so there is sufficient space that supply lines can be set.

As mentioned above, this pilot solenoid valve 1 is connected with use with requisite number purpose integrated package valve seat 2, this is connected with connecting bolt 14 and realizes, promptly, connecting bolt 14 (see figure 4)s are inserted several attachment hole 6 (see figure 1)s be located on the integrated package valve seat 2, and insert in the attachment hole of co-located on the 2nd side plate 13 of the 1st side plate 12 that is connected with direction one side and another side and get final product.

Above-mentioned the 1st side plate 12 has the supply aperture P and the delivery port R of pressure fluid at front-end face.Be located in the plug mounting hole of outer side surface, the multi-pole plug 16 (seeing Fig. 2 to Fig. 4) that the solenoid with each pilot valve is electrically connected is installed.Above-mentioned supply aperture P is by the path in the 1st side plate 12, with integrated package valve seat 2 in supply stream 8 and hydraulic control supply with the corresponding position opening of stream ps.In addition, delivery port R is discharging the corresponding position opening of stream pe with

discharge stream

9A, 9B and hydraulic control.The 2nd side plate 13 is blocked the other end of above-mentioned each stream in the integrated package valve seat 2 respectively.In addition, being connected with between the face of these integrated package valve seats 2 and the 1st, the

2nd side plate

12,13, the gasket seal (figure does not show) that each stream is communicated with airtightly is installed.

Above-mentioned integrated package valve seat 2 can be provided with at its main valve single solenoid formula main valve 3 shown in Figure 1 is set on the face, and bipitch tubular type main valve 3A (Fig. 2) also can be set.Under the situation that several integrated package valve seats 2 are connected with, also can as shown in Figure 2 various main valves 3,3A be installed selectively.Under the situation that adopts single solenoid formula main valve 3, only the 1st pilot valve 4A is arranged on the pilot valve attachment face of integrated package valve seat 2.Under the situation that adopts bipitch tubular type main valve 3A, the 1st and the

2nd pilot valve

4A, 4B are set on the pilot valve attachment face.

On delivery outlet 11A, the 11B of the supply aperture P on above-mentioned the 1st side plate 12 and discharge oral pore R and integrated package valve seat 2, so-called monolever pipe joint 17 is installed, when the deflection pressure air delivery pipe that figure is not shown inserts, monolever pipe joint 17 is bonded on the outside of this pipe, remove this joint by the pushing of clutch sleeve, can extract pipe.

Mark 18 expressions among Fig. 2 are located at the fixed hole on the

side plate

12,13, are used for this pilot solenoid valve 1 is installed in required parts.

The single solenoid formula main valve of representing in detail among Fig. 13 has the 1st piston case 21 and the 2nd piston case 22 of valve body 20, its axial both sides.These parts are fused by the connecting screw that figure does not show, by several screw 23 (see figure 2)s are installed and are provided with on the face by the main valve that gasket seal is installed in above the integrated package valve seat 2 airtightly.

Above-mentioned valve body 20 has the valve opening 25 of axial perforation and hydraulic control path 26, supplies with opening the 27, the 1st and the 2nd outlet opening 28A, 28B, the 1st and the

2nd discharge aperture

29A, 29B perpendicular to the pressure fluid of the direction opening of valve opening 25.When main valve 3 was installed on the integrated package valve seat 2, these openings were communicated with corresponding stream and aperture respectively.Above-mentioned hydraulic control path 26 is communicated with supply opening 27.

With the 1st coaxial piston case 21 of valve opening 25 in, inserting the 1st piston 31 that can slide vertically.In the 2nd piston case 22, inserting 2nd piston 32 that can vertically slide of diameter less than the 1st piston (compression area about 1/2).In valve opening 25, inserting the valve body 33 that can slide vertically.The 1st piston 31 slides in the 1st pressure chamber 34, and the 1st pressure chamber 34 is communicated with aftermentioned the 1st hydraulic control output channel 42a.The 2nd piston 32 slides in the 2nd pressure chamber 35, and the 2nd pressure chamber 35 is communicated with hydraulic control path 26.

Above-mentioned main valve 3 is 5 orifice structures, and when the hydraulic control fluid outputed to the 1st pressure chamber 34, valve body 33 is right-hand moving in figure, supplies with opening 27 and be communicated with outlet opening 28A, and outlet opening 28B is communicated with (valve block upper half of seeing Fig. 1) with discharge aperture 29B.When the hydraulic control fluid of the 1st pressure chamber 34 is discharged, the fluid that is fed into the hydraulic control path 26 of the 2nd pressure chamber 35 moves valve body 33 left in figure, supply is opened 27 and is communicated with outlet opening 28B, and outlet opening 28A is communicated with (Lower Half of seeing valve body) with discharge aperture 29A.

Manually-operable button 36a is inserted in the 1st piston case 21 slidably, and this manually-operable button 36a by helical spring 38 pushings toward above, makes the 1st hydraulic control output channel 42a be communicated with the 1st pressure chamber 34 when usual.When the pushing force of opposing helical spring 38 when pushing this manually-operable button 36a, the 1st pressure chamber 34 is communicated with hydraulic control path 26, and blocks being communicated with of the 1st pressure chamber 34 and the 1st hydraulic control output channel 42a by sealing gasket 39.Therefore, when causing, accidents such as power failure can not from pilot valve 4A when the 1st pressure chamber 34 exports the hydraulic control fluids, push manually-operable button 36a, and just can be from hydraulic control path 26 to the 1st pressure chamber 34 delivery pressure fluids, so, can drive valve body 33 by the diameter difference of

piston

31 and 32.

Above-mentioned the 1st pilot valve 4A has the 1st hydraulic control and supplies with opening p1, the 1st hydraulic control outlet opening a1, reaches the 1st hydraulic control discharge aperture e1, also has the 1st solenoid s1 that drives the pilot valve valve body.On the other hand, under the situation that has the 2nd pilot valve 4B, this pilot valve 4B has with the 2nd hydraulic control of its similar shape and supplies with opening p2, the 2nd hydraulic control outlet opening a2, the 2nd hydraulic control discharge aperture e2 and the 2nd solenoid s2.

These pilot valves are known straight ejector half (overdrive-type) 3 aperture solenoid valves, excitation by solenoid s1, s2 attracts movable core (figure does not show), making hydraulic control supply with opening is communicated with the hydraulic control outlet opening, when removing the excitation of solenoid s1, s2, the elastic force of Returnning spring (figure does not show) resets movable core, and the hydraulic control outlet opening is communicated with the hydraulic control discharge aperture.

Opening p1, p2 and hydraulic control discharge aperture e1, e2 are supplied with in the hydraulic control of above-mentioned pilot valve, are communicated with hydraulic control supply stream ps and hydraulic control discharge stream pe respectively by hydraulic

control supply passage

40a, 40b and hydraulic control drain passageway 41a, the 41b that is located on the integrated package valve seat 2.

The 1st hydraulic control outlet opening a1 by be located at the 1st hydraulic control output stream 42a on the integrated package valve seat 2 and be located at valve body of main valve 20 and the 1st piston case 21 on path 43a, be communicated with the 1st pressure chamber 34.The 2nd hydraulic control outlet opening a2 is by opening above the 2nd piston case one side of the valve body 20 of the 2nd hydraulic control output channel 42b on integrated package valve seat 2.In the illustrated single solenoid formula main valve 3, in the 2nd piston case 22, the 2nd hydraulic control output channel 42b was blocked with the 2nd being communicated with of pressure chamber 35.

On each solenoid s1, s2, be provided with the helical shroud 44 that covers them, on the top of this helical shroud 44,

substrate

45a, 45b are installed and cover their transparent

protective shield

46a, 46b respectively.Stretch out in the

coil terminals

47,47 of solenoid s1, s2 top and connect the

power supply terminal

48,48 of helical shroud 44 from top to bottom and the printed circuit on substrate 45a, the 45b is electrically connected; Being installed in lamp 49a, 49a on substrate 45a, the 45b, that show solenoid s1, s2 energising and the solenoid necessary various electronic component 49 of switching on also is electrically connected with foregoing circuit.At the position relative, be provided with the

window

56,56 that is used for from outside identification solenoid s1, s2 energising with lamp 49a, the 49a of above-mentioned water proof cover 5.When water proof cover 5 is when making with transparent or semitransparent synthetic resin, these windows 56 can form the resin attenuate.When water proof cover 5 is when making with metal, then must the transparent component that can recognize lamp 49a be installed airtightly at window 56 places.

Pilot valve on integrated package valve seat 2 is provided with the sleeve assembly department 10a place of face opening, the sleeve 51 of the

power supply terminal

48,48 that connects the above-mentioned the 1st and the

2nd pilot valve

4A, 4B respectively is installed, one end of supply lines 52 is connected with terminal in these sleeves, and the other end of supply lines 52 holds path 10 by distribution and is electrically connected with the needle pin of multi-pole plug 16 respectively.Form positioning part 44a on above-mentioned helical shroud 44, this positioning part 44a is embedded in outward on each sleeve 51, the mounting point of pilot valve on integrated package valve seat 2, location.

When above-mentioned

pilot valve

4A, 4B are arranged on it on integrated package valve seat 2 by positioning part 44a, each hydraulic control opening respectively be located at integrated package valve seat 2 on corresponding hydraulic control path be communicated with, power supply terminal 48 is inserted in the sleeve 51 simultaneously.Therefore, can be from multi-pole plug 16 blanketly to solenoid s1, the s2 of these

pilot valves

4A, 4B power supply.These

pilot valves

4A, 4B by install screw 53 (see figure 2)s be installed in airtightly integrated package valve seat 2 above.Therefore each supply lines 52 is not exposed to the outside by the distribution accommodating part 10 that is located on the integrated package valve seat 2.

Above-mentioned water proof cover 5 covers

pilot valve

4A, 4B, by install that the sealing gasket 57 of screw 55 by the frame shape is installed in airtightly and integrated package valve 2 top between.Therefore, even in the operating environment that liquid such as water disperse or in the high humility operating environment, use, also can to pilot

valve

4A, 4B, and electrifying system from supply lines 52 to pilot valve carry out waterproof completely, so can eliminate the fault that moisture causes, and water proof structure also only is that water proof cover 5 is installed, so very simple.In addition, owing to can only carry out waterproof to pilot valve and the electrifying system thereof that needs waterproof, so, when the maintenance of part in addition, maintenance, part exchanging, needn't remove above-mentioned waterproof, can irrespectively carry out with this anti-water section.Moreover, when above-mentioned waterproof, adopt common cover for pilot solenoid valve with 2 pilot valves or 1 pilot valve, not only can make the part specificationsization in bipitch tubular type and the single solenoid formula hydraulic control solenoid valve, and owing to the supply lines that is provided with the pilot valve power supply in the integrated package valve seat holds path, so can carry out the waterproof of electrifying system simultaneously.

Above-mentioned integrated package valve seat 2 has and supplies with stream 8 and

discharge stream

9A, 9B and the hydraulic control supply stream ps that separates with them, reaches hydraulic control discharge stream pe, but also can dispense these hydraulic control streams, and hydraulic

control supply passage

40a, 40b are communicated with supply stream 8, hydraulic

control drain passageway

41a, 41b are communicated with among drain passageway 9A, the 9B any.

In pilot solenoid valve 1 with above-mentioned structure, when being arranged on main valve 3 and pilot valve 4A (comprising pilot valve 4B in case of necessity) on the integrated package valve seat 2, each opening of these valves is communicated with corresponding stream and aperture respectively, and the solenoid s1 (s2) of pilot valve is electrically connected with the needle pin of multi-pole plug 16 simultaneously.In addition, when being installed to water proof cover 5 on the integrated package valve seat 2, can be to electric part and the electrifying system waterproof thereof of

pilot valve

4A, 4B.

When pilot solenoid valve 1 is the single-screw tubular type, pilot valve 4B is not set, at this moment, pilot valve at

hydraulic control path

40b, 41b etc. is provided with the face opening, but therefore the inflow and outflow of hydraulic control fluid, must can block it with suitable parts (figure does not show) such as stoppers with unloading.About this point, in the following embodiments too.

On above-mentioned valve body 20, also can not adopt the main valve that the 2nd piston case 22 is installed, and adopt the bipitch tubular type main valve 3A (see figure 2) be installed with the 2nd piston case 21A of the 1st piston case 21 same configuration (for fear of repetition, not detailed icon).In this case, the 2nd piston case 21A has and the 1st pressure chamber 34 and the 1st piston case 31 the 2nd pressure chamber and the 2nd piston with diameter, and has the manually-operable button 36b same with manually-operable button 36a.The effect that is located at the manually-operable button 36b on the 2nd piston case 21A is identical with the effect of the manually-operable button 36a of above-mentioned the 1st piston case 21.

Inevitably, the 2nd pilot valve 4B also is installed, the 2nd hydraulic control output channel 42b is communicated with the 2nd pressure chamber 35 by the path identical with the path 43a of the 1st piston case 21 among the 2nd piston case 21A, so, can be used as pilot solenoid valve 1A (seeing Fig. 2 to Fig. 4) with bipitch tubular type main valve 3A.

Fig. 5 represents the 2nd embodiment of the present invention.Pilot solenoid valve 61 among the 2nd embodiment and the 1st embodiment similarly have the face that is provided with and the 1st of main valve 73, the face that is provided with of the

2nd pilot valve

4A, 4B dividually on integrated package valve seat 62.Cover 5 is covered with whole pilot valve 4A, the 4B by solenoid-activated that separates with main valve 61, but has set up hydraulic control path 64 with respect to the 1st embodiment's integrated package valve seat 2, so this integrated package valve seat also is common to the main valve of different valve constitutions.

Specifically, on the integrated package valve seat 62 of the pilot solenoid valve 61 among the 2nd embodiment, outside hyraulic controlled type main valve 63 is installed.Therefore, outside hydraulic control fluid by hydraulic control supply with stream ps from Fig. 2 and the same supplies such as side plate of the 1st side plate 12 shown in Figure 3, in this side plate, hydraulic control is supplied with stream ps and is supplied with aperture P and is not communicated with.

Above-mentioned integrated package valve seat 62 has the structure same with the 1st embodiment, but has added outside hydraulic control path 64 in this structure, and an end of this outside hydraulic control path 64 is supplied with stream ps with hydraulic control and is communicated with.

Above-mentioned main valve 63 has the 1st piston case 66 and the 2nd piston case 67 of valve body 65 and its axial both sides, the other end of the outside hydraulic control path 64 that one end is being communicated with hydraulic control supply stream ps, be communicated with the 2nd pressure chamber 35 (the 2nd piston 32 slides in the 2nd pressure chamber 35) by the path 68 that is formed on valve body 65 and the 2nd piston case 67, and be communicated with hydraulic control path 69 on being formed on valve body 65 by the 2nd pressure chamber 35.But the 2nd hydraulic control output channel 42b was blocked with being communicated with in the 2nd piston case 67 of the 2nd pressure chamber 35.

Integrated package valve seat 62 with pilot solenoid valve 61 of above-mentioned structure, owing to just in the 1st embodiment's integrated package valve seat 2, be provided with outside hydraulic control path 64 more, one end of this outside hydraulic control path 64 is supplied with stream ps with hydraulic control and is communicated with, so, available and this integrated package valve seat 2 general parts constitute, and can make

piston case

66,67 and part generalization.Pilot valve 4 A and the water proof cover 5 that covers it are too.Therefore, internally hyraulic controlled type become outside hyraulic controlled type specification change easily because the normalization of part reduces cost.

Among Fig. 5, dotted the position that is provided with of the 2nd pilot valve 4B, in this pilot solenoid valve 61, owing to supply with the 2nd pressure chamber 35 always from the outside hydraulic control fluid of hydraulic control supply stream ps, so the 2nd pilot valve 4B is not installed.

Other structure of above-mentioned pilot solenoid valve 61 is basic identical with the 1st embodiment's pilot solenoid valve 1, and identical or considerable part main among the figure is annotated with same reference numerals, and its detailed description is omitted.

In the 2nd embodiment's the pilot solenoid valve 61, when pushing manually-operable button 36a, the hydraulic control fluid of outside hydraulic control path 64 is output to the 1st pressure chamber 34 of the 1st piston case 66 by path 68 and hydraulic control path 69, simultaneously, because the 1st pressure chamber 34 and sealed pad 39 blocking-up of being communicated with of the 1st hydraulic control output channel 42a, so valve body 33 is because of diameter difference right-hand moving in figure of the piston 32 of the piston 31 of the 1st piston case 66 and the 2nd piston case 67, become position shown in first of valve body 33 among Fig. 5.When removing the pushing of manual operating knob 36a, the hydraulic control fluid of the 1st pressure chamber 34 is discharged to the outside, so the outside hydraulic control fluid that supplies to the 2nd pressure chamber 35 makes valve body 33 left in figure move (position shown in second of valve body 33 among Fig. 5).

Other actions of above-mentioned the 2nd embodiment are basic identical with the 1st embodiment, can be with reference to the 1st embodiments, and its explanation is omitted.

Fig. 6 represents the 3rd embodiment of the present invention.In this pilot solenoid valve 71, with the 1st piston case 76 1 sides that are opened in the hydraulic control way set in the integrated package valve seat 72 in the valve body 75, adopt the integrated package valve seat different with the 2nd embodiment, therefore, adopt main valve 73 with the structure that is suitable for this integrated package valve seat 72 with above-mentioned the 1st embodiment.

But the essential structure of integrated package valve seat 72 is identical with the above-mentioned the 1st and the 2nd embodiment's, the only position of hydraulic control path, quantity slight change.These integrated

package valve seats

2,62,72 can be made with same material, in addition, as shown in Figures 2 and 3, under the situation that the integrated package valve seat is connected with, also can both use with under the prerequisite that does not cause fault.

Among the 3rd embodiment, have above-mentioned integrated package valve seat 72 and be installed in the integrated package valve seat respectively bipitch tubular type main valve 73 and

pilot valve

4A, 4B on the face respectively are set, the water proof cover 5 that covers them is installed on two pilot valve 4A, the 4B.

Above-mentioned main valve 73 has the 1st piston case 76 and the 2nd piston case 77 at valve body 75 and its length direction two ends, is provided with valve opening 25 and the 1st, the 2nd

hydraulic control path

78a, 78b at the axle direction of valve body 75.Above-mentioned the 1st piston case 76 has the 1st piston 31 and the 1st pressure chamber 34 and the 1st manually-operable button 79a.The 2nd piston case 77 has and 2nd piston 82 and 2nd pressure chamber 83 of the 1st piston 31 with diameter, also has the 2nd manually-operable button 79b with the 1st manually-operable button 79a same configuration.

For the ease of diagram, in Fig. 6, with

hydraulic control path

78a and 78b above-below direction and come valve opening 25 above, these hydraulic control paths are located at the direction perpendicular to paper abreast in the oblique upper dead space of valve opening 25.

Be formed on outside hydraulic control path 84 on the integrated package valve seat 72 and the 1st, the 2nd hydraulic

control output channel

42a, 42b all at the 1st piston case side opening of main valve 73, hydraulic control output channel 42a similarly is communicated with the 1st pressure chamber 34 with the 1st embodiment, and the 2nd hydraulic control output channel 42b is communicated with the 2nd hydraulic control path 78b of valve body 75 by the path 80a that is formed on the 1st piston case 76.Path that outside hydraulic control path 84 communicates by the patchhole 85a with the 1st manually-operable button 79a and the gap in this patchhole 85a are communicated with the 1st hydraulic control path 78a, when not pushing the state of diagram the 1st manually-operable button 79a, with being communicated with of the 1st pressure chamber 34 by sealing gasket 39 blocking-up of the 1st manually-operable button 79a.

The other end of above-mentioned the 2nd hydraulic control path 78b that is communicated with the 2nd hydraulic control output channel 42b, be communicated with the 2nd pressure chamber 83 by the path 87 that is formed in the 2nd piston case 77, gap in the patchhole 85b of the other end of above-mentioned the 1st hydraulic control path 78a and the 2nd manually-operable button 79b is communicated with, when shown position, with being communicated with of the 2nd pressure chamber 83 by sealing gasket 39 blocking-up of the 2nd manually-operable button 79b.

Other structure of the 3rd embodiment is except having the 2nd pilot valve 4B this point, basic identical with the 1st embodiment.Identical or considerable part main among the figure is annotated with same reference numerals, and its detailed description is omitted.

The 3rd embodiment's pilot solenoid valve, when the hydraulic control fluid being supplied with the 1st pressure chamber 34 by the action of the 1st pilot valve 4A, valve body 33 is right-hand moving in figure, stream is switched (valve block upper half of seeing Fig. 6), when the action of the 1st pilot valve 4A is removed, discharge the hydraulic control fluid of the 1st pressure chamber 34, when simultaneously by the action of the 2nd pilot valve 4B the hydraulic control fluid being supplied with the 2nd pressure chamber 83, valve body 33 left in the figure moves (Lower Half of seeing the valve body of Fig. 6).

During accidents such as power failure, push the 1st manually-operable button 79a, outside hydraulic control path 84 is communicated with the 1st pressure chamber 34, simultaneously, by being communicated with of sealing gasket 39 blocking-up the 1st pressure chamber 34 and the 1st hydraulic control output channel 42a, so outside hydraulic control fluid flows in the 1st pressure chamber 34, valve body 33 is right-hand moving in figure.In addition, when remove to the 1st manually-operable button 79a push and push the 2nd manually-operable button 79b the time, hydraulic control fluid in the 1st pressure chamber 34 is discharged to the outside, outside hydraulic control path 84 and the 1st hydraulic control path 78a are communicated with the 2nd pressure chamber 83 by the gap in the patchhole 85b of the 2nd manually-operable button 79b simultaneously, so, the hydraulic control fluid is output to the 2nd pressure chamber 83, and valve body 33 left in figure moves.At this moment, the 2nd pressure chamber 83 and sealed pad 39 blocking-up of being communicated with of path 87.

Among Fig. 7, the 3rd embodiment's pilot solenoid valve 71 is not installed in expression, and the pilot solenoid valve 91 of single solenoid formula main valve is installed.

The 2nd piston case 94 in the main valve 93 of this pilot solenoid valve 91 has diameter than little the 2nd piston 95 and the 2nd pressure chamber 96 of the 1st piston 31 and the 1st pressure chamber 34.Valve body 75 is identical with the 3rd embodiment's, is communicated with the 2nd pressure chamber 96 but the 1st hydraulic control path 78a passes through path 97, and the 2nd hydraulic control path 78b is closed by the 2nd piston case 94 by the 2nd piston case 94 side ends.

Other structure of this pilot solenoid valve 91 is except having the 2nd pilot valve 4B this point, and is basic identical with the 3rd embodiment.The action of this pilot solenoid valve 91 often acts on pressure chamber's 96 this point except the pressure of outside hydraulic control fluid, and is identical with the 3rd embodiment's pilot solenoid valve 1, and identical or considerable part main among the figure is annotated with same reference numerals, and its explanation is omitted.

Among above-described each embodiment, the face that is provided with of main valve and two pilot valves in turn is provided on the integrated package valve seat respectively, and among the 4th embodiment that Fig. 8 and Fig. 9 represent, is the face that is provided with that sets two pilot valves side by side.

That is, the pilot solenoid valve 101 of Fig. 8 has the main valve 103 and the pilot valve 4A of single solenoid formula.Pilot solenoid valve 101A among Fig. 9 has bipitch tubular type main valve 103A and pilot valve 4A, 4B.From Fig. 9 as seen, in these pilot solenoid valves 101,101A, the face that is provided with of two

pilot valve

4A, 4B is provided on the integrated package valve seat 102 side by side along the direction that is connected with of integrated package valve seat.

The structure of Fig. 8 and main valve 103 shown in Figure 9 is identical with the 1st embodiment's main valve 3, also can be the single solenoid formula main valve among other embodiment.In addition, main valve 103A also can be the bipitch tubular type main valve among above-mentioned arbitrary embodiment.As shown in Figure 9, these pilot solenoid valves can be that

solenoid valve

101 and 101A are connected with required number, perhaps also can only either party wherein be connected with required number.In this case, if for example adopt Fig. 6 or main valve shown in Figure 7, the hydraulic control path corresponding with this main valve should be arranged on the integrated package valve seat 102 then.

The 4th embodiment's pilot solenoid valve is provided in the width direction of main valve side by side with the face that is provided with of

pilot valve

4A, 4B, and this structure is favourable for the diameter that strengthens main valve valve opening 25 and valve body 33, the flow that increases in the main valve.Though big a little integrated package valve seat be connected with the direction width, can shorten the length of integrated package valve seat, can make compact overall structure.

The 4th embodiment's other structure and action are identical with among the 1st to the 3rd embodiment any, so its explanation is omitted.

Figure 10 represents the 5th embodiment of the present invention.The integrated package valve seat 2 of this pilot solenoid valve 108 and aforementioned each embodiment similarly have the face that is provided with that main valve 3 reaches the pilot valve 110A, the 110B that separate with this main valve 3, also have the water proof cover 109 that covers this two pilot valve.Though represented pilot valve 110B in Figure 10, this only is in order to represent that it is provided with the position, and the main valve 3 shown in does not need pilot valve 110B here.

Pilot valve 110A, the 110B that adopts in the present embodiment has hydraulic control manually-operable button 111.Because of accident pilot valve 110A such as power failures, when 110B can not operate main valve, pushing this hydraulic control manually-operable button 111 moves the movable core of pilot valve, opening p1, p2 are supplied with in hydraulic control to be communicated with hydraulic control outlet opening a1, a2, like this, the hydraulic control fluid is outputed to the hydraulic control output channel, when removing above-mentioned pushing, reset, hydraulic control outlet opening a1, a2 are communicated with hydraulic control discharge aperture e1, e2 by Returnning spring.

In order to operate above-mentioned hydraulic control manually-operable button 111, on water proof cover 109 with hydraulic control manually-operable button corresponding position, manual operation unit 112a, the 112b of this hydraulic control manually-operable button 111 of pressing operation are set.This this

manual operation unit

112a, 112b be connect water proof cover 109 by the press button shape, at its outer circumferential face sealed member 113 is installed, sealing parts 113 will sealing airtightly between the button patchhole of water proof cover 109.Therefore, moisture can not be invaded in the water proof cover from the button patchhole, even when accident main valves such as power failure can not drive, also need not remove the waterproof of pilot valve, can easily operate hydraulic control manually-operable button.

The 5th embodiment's main valve and integrated package valve seat can adopt any main valve shown in the 1st embodiment to the 4 embodiments and the integrated package valve seat corresponding with it.The 5th embodiment's other structure and action and the 1st embodiment are basic identical, and identical or suitable part is annotated with identical reference character, and its explanation is omitted.

In the pilot solenoid valve of the invention described above, because the pilot valve branch of main valve and solenoid-activated is arranged, the water proof cover that covers pilot valve and the electrifying system from the supply lines to the pilot valve is installed, so, only, just can only carry out waterproof to pilot valve and electrifying system thereof so that the so simple structure of this water proof cover to be installed.And, pilot solenoid valve integral body is not carried out waterproof, only pilot valve and the electrifying system thereof that needs waterproof carried out waterproof, so, remaining part is keeped in repair, when maintenance, renewal part, can not remove the waterproof of waterproof part, irrespectively handle with this anti-water section.In addition, for pilot solenoid valve, can adopt the cover of common-use size, so can make the part generalization with 2 pilot valves or 1 pilot valve.

In addition, the waterproof of pilot valve when being provided with the manual press part of this hydraulic control manually-operable button of pressing operation, can not removed in hydraulic control manually-operable button on water proof cover and pilot valve corresponding position, easily operates hydraulic control manually-operable button.

Claims

1. pilot solenoid valve, the pilot valve of main valve and driving valve body of main valve is being set on the integrated package valve seat, main valve switches outlet opening makes it be communicated with supply opening and discharge aperture, pilot valve is by solenoid-activated, driven along its axial direction to the valve body of the hydraulic control fluid of arranging with main valve by pilot valve, the stream that switches between above-mentioned opening makes its connection; It is characterized in that, above-mentioned main valve and pilot valve are separated, they are arranged on the axial direction of valve body of main valve side by side and are arranged on independently on the integrated package valve seat, be provided with the supply lines that is used to wear supply lines and hold path in this integrated package valve seat, this supply lines is used for the pilot valve power supply; On the integrated package valve seat, water proof cover is installed, this water proof cover cover pilot valve and from the supply lines to the pilot valve between electrifying system.

2. pilot solenoid valve as claimed in claim 1, it is characterized in that, on the integrated package valve seat, two faces that are provided with by the pilot valve of solenoid-activated are set the axial direction of valve body of main valve, these two by the pilot valve of solenoid-activated with the valve body of main valve along its axial direction respectively toward just or in the other direction driving.

3. pilot solenoid valve as claimed in claim 1, it is characterized in that, on the integrated package valve seat, two faces that are provided with by the pilot valve of solenoid-activated are provided in direction perpendicular to the valve body of main valve axis, these two by the pilot valve of solenoid-activated with the valve body of main valve along its axial direction respectively toward just or in the other direction driving.

4. as each the described pilot solenoid valve in the claim 1 to 3, it is characterized in that, hydraulic control manually-operable button is set on hydraulic control valve, on water proof cover with this hydraulic control manually-operable button corresponding position, be provided with by push the manual operation unit that can operate this hydraulic control manually-operable button from the outside; By pushing the connection between the changeable stream of hydraulic control manually-operable button.