CN103195968B - Solenoid valve and guide electromagnetic valve - Google Patents

Solenoid valve and guide electromagnetic valve Download PDF

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Publication number
CN103195968B
CN103195968B CN201310003757.1A CN201310003757A CN103195968B CN 103195968 B CN103195968 B CN 103195968B CN 201310003757 A CN201310003757 A CN 201310003757A CN 103195968 B CN103195968 B CN 103195968B
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valve
mentioned
guide
valve seat
pin portion
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CN201310003757.1A
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CN103195968A (en
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丸山纪郎
吉野谷宽人
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Saginomiya Seisakusho Inc
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Saginomiya Seisakusho Inc
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Abstract

The invention provides a kind of solenoid valve and guide electromagnetic valve, prevent when the distortion of first guide valve seat (421), pin portion (61a) pin portion (61a) nip development guide electromagnetic valve in, pin portion (61a) prevents from when nipping being close to guide's valve seat (421), and prevents valve from revealing.In the bottom of guide valve blocks (6), around pin portion (61a), form circular recess (61c), around it, form circular retainer (61b).Formation makes the isobaric hole (61d) of recess (61c) and valve chamber (21A) conducting.The convex portion (M) produced because of guide's valve seat (421) distortion is accommodated in recess (61c).Circular stop surface is formed by guide's valve seat (421) side end face of retainer (61b).Also may be used for direct action solenoid valve.

Description

Solenoid valve and guide electromagnetic valve
Technical field
The present invention relates to the valve body making solenoid valve is needle-valve, and is provided with the solenoid valve preventing the stop surface carried out of nipping of needle-valve when the pin portion of this needle-valve or valve seat distortion, and this solenoid valve is arranged to the guide electromagnetic valve of pilot valve.
Background technique
In the past, general needle-valve and valve seat are the such structure of Figure 10 (A).There is at the conglobate valve port a1 of valve seat a shape, needle-valve b the pin portion b1 of cone shape.Needle-valve b is driven electromagnetically portion and drives along axis L direction, pin portion b1 opening and closing valve port a1.Such needle-valve is when valve closing, and the power due to valve closing only concentrates on the abutted position of the conical side surface of pin portion b1 and the edge of opening of valve port a1, so can reliably maintain valve closing state.
Such as, but in so general structure, as shown in Figure 10 (B), through secular variation, valve seat a is out of shape, easily there is nipping of pin portion b1.This is more obvious when valve seat a is the parts such as resin.Therefore, the change that there is the amount of movement (lift amount) in the axis L direction of needle-valve b becomes large problem.
On the other hand, such as disclose the valve body of needle-valve as solenoid valve in Japanese Unexamined Patent Publication 11-344145 publication (patent documentation 1), and the technological scheme of stop surface is set at this needle-valve.The solenoid valve of this patent documentation 1 is guide electromagnetic valve, but this pilot valve uses the needle-valve shown in Fig. 9 (A).This needle-valve c has the smooth stop surface c2 opposed with valve seat a around pin portion c1, and such as, if valve seat a is out of shape, develop into the degree of nipping that there is pin portion c1, then, as shown in Fig. 9 (B), stop surface c2 abuts with valve seat a.Thus, prevent and further nip than pin portion c1, the change of lift amount also diminishes.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 11-344145 publication
Summary of the invention
According to the needle-valve c of Fig. 9 and patent documentation 1, as shown in Fig. 9 (B), through secular variation, if surrounding's generation distortion of the valve port a1 of valve seat a, pin portion c1 nips, then stop surface c2 abuts with valve seat a, prevents and nips, but it is due to the tabular surface that stop surface c2 is larger, large with the area of contact of valve seat a.Therefore, stop surface c2 is close to valve seat a as sucker, there is the problem that the electric power needed for valve opening increases.
In addition, as shown in Fig. 8 (A), if form otch c3 in a part of stop surface c2, then prevent slightly and be close to as sucker.But as shown in Fig. 8 (B), the convex portion M produced due to the distortion of valve seat a is formed at the position of otch c3, if so needle-valve c rotates around axis L relative to valve seat a, then as shown in Fig. 8 (C), stop surface c2 jumps onto to convex portion M, between pin portion c1 and valve port a1, produce gap, there is the problem producing valve and reveal.
The present invention completes to eliminate above-mentioned problem points, and problem is to occur, in the solenoid valve of the stop surface of nipping of needle-valve, to prevent from being close to valve seat, and prevent valve from revealing when needle-valve is nipped when being provided with for preventing in the pin portion of needle-valve or valve seat distortion.
The feature of the solenoid valve of technological scheme 1 is, possessing the valve seat with circular valve port, the valve chamber that fluid flows into, have the portion of being driven electromagnetically drive thus in above-mentioned valve chamber the valve body in the cone shape pin portion of the valve port of the above-mentioned valve seat of opening and closing solenoid valve in, around above-mentioned pin portion, circular recess is formed with at above-mentioned valve body, form the isobaric hole that this recess is communicated with the inflow side of the fluid flowing into above-mentioned valve chamber, be formed to the outstanding circular retainer in above-mentioned valve seat side around above-mentioned recess, circular stop surface is formed by the end of this retainer.
Solenoid valve described in technological scheme 1 is arranged to leading type valve by the guide electromagnetic valve of technological scheme 2, and possess: with the piston valve that can arrange in the mode of axial direction movement, main valve seat arranged opposite with above-mentioned piston valve on above-mentioned axis in the above-mentioned valve chamber of cylindrical shape, the above-mentioned valve seat of technological scheme 1 is the guide's valve seat being formed at above-mentioned piston valve, and the above-mentioned valve body of technological scheme 1 is guide valve blocks arranged opposite with above-mentioned guide's valve seat in above-mentioned valve chamber.
According to the solenoid valve of technological scheme 1, valve seat or pin portion distortion and pin portion nip valve port time, stop surface abuts with valve seat, but stop surface is circular, and it is little with the area of contact of valve seat, and recess utilizes the inflow side of isobaric hole and fluid and high pressure side to be communicated with, so during valve opening, can prevent the valve seat being close to valve body.In addition, the convex portion of valve seat or the distortion of pin portion is incorporated in recess, and pin portion makes valve port close completely, does not produce valve and reveals.
According to the guide electromagnetic valve of technological scheme 2, in guide electromagnetic valve, obtain the effect identical with technological scheme 1.
Accompanying drawing explanation
Longitudinal section when Fig. 1 is the power-off of the guide electromagnetic valve of the 1st mode of execution of the present invention.
Longitudinal section when Fig. 2 is the kick action of the guide electromagnetic valve of the 1st mode of execution of the present invention.
Fig. 3 is that the major component of the guide electromagnetic valve of the 1st mode of execution of the present invention decomposes longitudinal side view.
Fig. 4 is the major component exploded perspective view of the guide electromagnetic valve of the 1st mode of execution of the present invention.
Fig. 5 is the figure be described the effect of the guide valve blocks of the 1st mode of execution of the present invention.
Longitudinal section when Fig. 6 is the power-off of the direct action solenoid valve of the 2nd mode of execution of the present invention.
Longitudinal section when Fig. 7 is the power-off of the direct action solenoid valve of the 3rd mode of execution of the present invention.
Fig. 8 is the figure being formed with an example of the needle-valve of otch at stop surface represented in the past.
Fig. 9 is the figure with the needle-valve of stop surface represented in the past.
Figure 10 is the figure without the needle-valve of stop surface represented in the past.
In figure: 1-main part, 2-cylinder barrel, 3-electromagnetic drive part, 14-main valve seat, 14a-primary valve, 21-cylinder body portion, 21A-valve chamber, 4-piston valve, 421-guide valve seat, 42a-pilot port (valve port), 42b-guiding path, 6-guide valve blocks (needle-valve), 61a-pin portion, 61b-retainer, 61c-recess, 61b1-stop surface, 61d-isobaric hole, M-convex portion, 10-main part, 10A-valve chamber, 103-valve seat, 103a-valve port, 7-plunger (valve body), 71a-pin portion, 71b-retainer, 71c-recess, 71b1-stop surface, 71d-isobaric hole, L-axis.
Embodiment
Next, with reference to accompanying drawing, the mode of execution of the guide electromagnetic valve and direct action solenoid valve that apply solenoid valve of the present invention is described.Longitudinal section when Fig. 1 is the power-off of the guide electromagnetic valve of the 1st mode of execution, the figure of the state of kick action when Fig. 2 is the energising representing this guide electromagnetic valve, Fig. 3 is that the major component of this guide electromagnetic valve decomposes longitudinal section, and Fig. 4 is the major component exploded perspective view of this guide electromagnetic valve.In addition, this guide electromagnetic valve is configured with the state of Fig. 1, the concept of " up and down " in below illustrating and corresponding up and down in Fig. 1.The guide electromagnetic valve of this mode of execution such as has: the metal main part 1 that the second side joint 12 that the first side joint 11 of the high pressure that the fluid such as refrigeration agent is flowed into and fluid flow out is integrally formed, the cylinder barrel 2 being installed on this main part 1 and be arranged at the electromagnetic drive part 3 on cylinder barrel 2 top.
Between first side joint 11 and second side joint 12, be formed with next door 13 at main part 1, the upper end side of next door 13 is formed with main valve seat 14.The primary valve 14a of rounded opening is formed at main valve seat 14.In addition, be formed with slim circular space 14b around main valve seat 14, when valve opening state, first side joint 11 and second side joint 12 are via this circular space 14b and primary valve 14a conducting.In addition, main part 1 has the cylinder body holding part 15 extending the cylindrical shape of configuration from the surrounding of circular space 14b, is formed with internal thread part 15a in the inner side of this cylinder body holding part 15.
Cylinder barrel 2 has with the cylinder body portion 21 of the axis L cylindrical shape that is rotating center, lip part 22 and the connecting part 23 of drum extending configuration along electromagnetic drive part 3 side.Be formed with external thread part 21a in the periphery in cylinder body portion 21, by making the internal thread part 15a of this external thread part 21a and cylinder body holding part 15 be threadedly engaged, cylinder barrel 2 is fixed on cylinder body holding part 15.
The cylinder body portion 21 of cylinder barrel 2 is formed with the valve chamber 21A of cylindrical shape therein, is inserted with the piston valve 4 that profile is substantial cylindrical shape in this valve chamber 21A.Piston valve 4 has the brazen piston portion 41 covering outside and the resinous sealed department 42 arranged within it, and by the upper end in riveting piston portion 41, piston portion 41 and sealed department 42 are integrally fixed.And sealed department 42, when piston valve 4 is seated at main valve seat 14, closes primary valve 14a.Make the top of sealed department 42 for guide's valve seat 421, be formed with pilot port 42a and guiding path 42b from this guide's valve seat 421 to main valve seat 14 side, pilot port 42a is via guiding path 42b and second side joint 12 conducting.In addition, guide's valve seat 421 is corresponding with " valve seat " of technological scheme, and pilot port 42a is corresponding with " valve port " of technological scheme.Between piston valve 4 and the cylinder body portion 21 of cylinder barrel 2, be provided with gap, via this gap, the fluid of first side joint 11 side can flow into valve chamber 21A.
The chimeric plunger tube 31 having electromagnetic drive part 3 in the connecting part 23 of cylinder barrel 2, the surrounding of the end of this plunger tube 31 and connecting part 23 is fixed by soldering etc.Be inserted with the plunger 5 that is made up of magnetic and the guide valve blocks 6 as " needle-valve " in plunger tube 31, plunger 5 and guide valve blocks 6 link.And plunger 5 and guide valve blocks 6 can above in axis L direction (above-below direction) in plunger tube 31 slide.
Plunger 5 has and the slide part 51 of plunger tube 31 matching internal and the linking department 52 of bottom being formed at this slide part 51.Linking department 52 has along the cylindric of guide valve blocks 6 side extension and the necking part 52a of minor diameter and the columned jut 52b large with this necking part 52a phase diameter group.
Guide valve blocks 6 is substantial cylindrical shapes, the valve portion 61 with the cylindrical shape of piston valve 4 side, be formed at this valve portion 61 top and with the linking department 62 mated in plunger tube 31.Valve portion 61 has cone shape pin portion 61a and circular retainer 61b in its underpart.Retainer 61b comes to be integrally formed with pin portion 61a by formation recess 61c around the root of pin portion 61a.And the end face of guide's valve seat 421 side of retainer 61b becomes circular stop surface 61b1.In addition, as shown in Figure 4, in valve portion 61, around pin portion 61a, 3 positions are formed from the recess 61c isobaric hole 61d through to linking department 62 side.
Be formed with horizontal cross-sectional shape at linking department 62 and be U-shaped and the length in the axis L direction steering channel 62a longer than jut 52b.In addition, be formed with horizontal cross-sectional shape on the top of steering channel 62a and be U-shaped and the notch 62b that width is little compared with steering channel 62a, around this notch 62b, there is claw 62c.In addition, above-mentioned isobaric hole 61d makes recess 61c be communicated with steering channel 62a, and this recess 61c is via the first side joint 11 side conducting of isobaric hole 61d and steering channel 62a and high pressure.
By above formation, the jut 52b of plunger 5 is chimeric in the steering channel 62a inside of guide valve blocks 6, and the necking part 52a of plunger 5 is entrenched in the notch 62b of guide valve blocks 6.In addition, the length established amount larger than the length in the axis L direction of the jut 52b of plunger 5 in the axis L direction of the steering channel 62a of guide valve blocks 6, plunger 5 and guide valve blocks 6 are with can be interconnected in the mode of axis L direction relative movement.
Around the valve portion 61 of guide valve blocks 6, be equipped with pilot valve spring 63, this pilot valve spring 63 compresses and is clipped between the lower end of linking department 62 and piston valve 4.The piston spring 5b between bottom and the attractor 32 of Electromagnetic Drive 3 being compressed in vertical hole 5a is equipped in the vertical hole 5a of plunger 5.
The attractor 32 be made up of magnetic that electromagnetic drive part 3 possesses the upper end being fixed on plunger tube 31, the electromagnetic coil 33 of periphery being configured at plunger tube 31 and outer container 34.Electromagnetic coil 33 is covered by outer container 34, and the top of outer container 34 is screwed on attractor 32 by screw N.In addition, plunger tube 31 and attractor 32 are fixed by welding etc.
When not being energized to electromagnetic coil 33 (during power-off) be in the state of Fig. 1.That is, do not produce magnetic force, because of the active force of piston spring 5b and the deadweight of plunger 5, become the position that plunger 5 leaves attractor 32.Now, the pin portion 61a of guide valve blocks 6 makes pilot port 42a be valve closing state.
If be energized to electromagnetic coil 33, then transmit magnetic force via outer container 34 to attractor 32, plunger 5 rises, and the jut 52b of the lower end of plunger 5 abuts with the claw 62c of guide valve blocks 6 and engages.Thus, from the state of Fig. 2, plunger 5 and guide valve blocks 6 keep fastening state by linking department 52 and linking department 62, and rise.Thereafter, the upper end portion of plunger 5 abuts with attractor 32, and plunger 5 stops, and guide valve blocks 6 rises further because of the spring force of pilot valve spring 63.Like this, make plunger 5 along in the process of axis L direction movement, jut 52b abuts with the claw 62c of guide valve blocks 6, and the action making guide valve blocks 6 leave pilot port 42a is kick (キ Star Network) action.
In addition, if guide valve blocks 6 stops, pilot port 42a becomes standard-sized sheet, then the fluid in the back of the body space on the top of piston valve 4 flows out to secondary joint 12 side, and the pressure on the top of piston valve 4 reduces.Thus, utilize the pressure difference of the pressure on the top of piston valve 4 and the pressure (pressure of first side joint 11) of bottom, piston valve 4 rises, and primary valve 14a becomes standard-sized sheet, and fluid flows to secondary joint 12 from a joint 11.
Fig. 5 is the figure be described the effect of guide valve blocks 6, represents the example through the distortion of secular variation guide valve seat 421.As shown in Fig. 5 (A), when first guide valve seat 421 is not out of shape, when pin portion 61a makes pilot port 42a be valve closing state, retainer 61b leaves established amount from guide's valve seat 421.As shown in Figure 5 (B), if through secular variation, surrounding's distortion of pilot port 42a, the development of nipping of pin portion 61a, then the stop surface 61b1 of retainer 61b abuts with guide's valve seat 421, prevents pin portion 61a from further nipping.Now, the convex portion M caused by the distortion of guide's valve seat 421 is accommodated in the recess 61c of the inner side of retainer 61b, does not produce the valve leakage that the convex portion M as utilized illustrated by above-mentioned Fig. 8 (C) causes.As shown in Fig. 5 (C), this situation of rotating around axis L relative to guide's valve seat 421 at guide valve blocks 6 is also identical.
In addition, stop surface 61b1 is circular, little with the area of contact of guide's valve seat 421 compared with the tabular surface in the past illustrated with utilizing above-mentioned Fig. 9, so can prevent from being close to and guide's valve seat 421.Further, recess 61c via isobaric hole 61d and high pressure side conducting, so can also prevent from being further close to guide's valve seat 421, in valve opening, guide valve blocks 6 easily action (rise).
In addition, in this embodiment, become and carry out by the linking department 52 of plunger 5 and the linking department 62 of guide valve blocks 6 structure that links, so when assembling plunger 5 and guide valve blocks 6, the jut 52b of plunger 5 is made to be fitted together to in steering channel 62a from the sidepiece of guide valve blocks 6, necking part 52a is fitted together to in notch 62b, and the plunger 5 this be assembled into and guide valve blocks 6 are housed in plunger tube 31.Therefore, do not need the operations such as riveted joint, assembling operation becomes as easy as rolling off a log.In addition, do not need back-up ring etc., also can reduce components number.
In the 1st above mode of execution, illustrate sealed department 42(guide valve seat 421) be resinous example, but sealed department also can be metal, in this situation, identical with the situation that guide's valve seat 421 is as described above out of shape, when pin portion 61a is out of shape, retainer 61a, recess 61c and isobaric hole 61b also play identical effect.
Also the formation of the plunger of the guide electromagnetic valve of the 1st above mode of execution and guide valve blocks, action effect can be applied to direct action solenoid valve.Longitudinal section when Fig. 6 is the power-off of the direct action solenoid valve of the 2nd mode of execution, the key element identical with Fig. 1 gives same tag, omits detailed description.Be formed with valve chamber 10A at the main part 10 of this direct action solenoid valve, and first side joint 101 and second side joint 102 are installed.In addition, be formed with valve seat 103 in the bottom of valve chamber 10A, be formed with valve port 103a at the center of this valve seat 103.And first side joint 101 is communicated with valve chamber 10A, second side joint 102 can be communicated with valve chamber 10A via valve port 103a.
In addition, at main part 10, plunger tube 31 is installed, in this plunger tube 31, is inserted with plunger 5 and valve body 6.In addition, this valve body 6 is not guide valve blocks, but constructs identical with above-mentioned 1st mode of execution, and the detail section of valve body 6, valve portion 61 and linking department 62 uses the mark identical with Fig. 1.
When not being energized to electromagnetic coil 33 (during power-off), because of the active force of piston spring 5a and the deadweight of plunger 5, plunger 5 leaves attractor 32.And the pin portion 61a of valve body 6 is seated at valve seat 103, and valve port 103a becomes valve closing state.If be energized to electromagnetic coil 33, then plunger 5 rises, and the jut 52b of the lower end of plunger 5 abuts with the claw 62c of valve body 6 and engages.Thus, identical with the 1st mode of execution, keep plunger 5 and valve body 6 fastening state and rise, carrying out kick action.
In the 2nd mode of execution, the effect of retainer 61b when valve seat 103 is out of shape, recess 61c and isobaric hole 61d is identical with the 1st mode of execution, can prevent the convex portion of valve seat from causing valve to reveal, in addition, can prevent when valve opening, valve body 6 is close to valve seat 103.
In the direct action solenoid valve of the 2nd above mode of execution, identical with the 1st mode of execution, become the structure that plunger 5 and valve body 6 are linked by linking department 52,62, but shown in the direct action solenoid valve of the 3rd mode of execution as shown in Figure 7, plunger and valve body also can be integrally formed.In the figure 7, give identical mark to the key element identical with Fig. 1 and Fig. 6, omit detailed description.
In the direct action solenoid valve of the 3rd mode of execution, be equipped with plunger 7 in plunger tube 31, plunger 7 has cone shape pin portion 71a and circular retainer 71b in its underpart.Retainer 71b is integrally formed with pin portion 71a by formation recess 71c around the root of pin portion 71a.And the end face of valve seat 103 side of retainer 71b becomes circular stop surface 71b1.In addition, the isobaric hole 71d of the L-shaped be communicated with valve chamber 10A from recess 71c is formed in the bottom of plunger 7.And recess 71c is via the first side joint 101 side conducting of isobaric hole 71d and high pressure.
In the 3rd mode of execution, the effect of retainer 71b when valve seat 103 is out of shape, recess 71c and isobaric hole 71d is identical with the 1st mode of execution and the 2nd mode of execution, the valve that can prevent the convex portion of valve seat from causing is revealed, in addition, can anti-stopping valve time plunger 7 be close to valve seat 103.
The guide valve blocks 6 of the 1st above mode of execution, the valve body 6 of the 2nd mode of execution are formed by injection molding formings such as MIM (Metal Injection Molding: Metal Injection Molding), resin formings, thus easily can be manufactured on the parts of the shape of more difficult realization in cutting.In addition, metallic dust and the resin such as polypropylene, polyethylene, wax are mediated by MIM, after injection molding forming, overheated and remove resin, wax, become the manufacture method of metallic monomer.
In addition, also can come shaping the 1st mode of execution as magnetic and the plunger 5 of the 2nd mode of execution, the plunger 7 of the 3rd mode of execution using MIM, easily can be manufactured on the parts of the shape of more difficult formation in cutting.

Claims (2)

1. a solenoid valve, it possesses:
There is the valve seat of circular valve port;
For the valve chamber that fluid flows into; And
Driven by electromagnetic drive part and in above-mentioned valve chamber the above-mentioned valve seat of opening and closing valve port and there is the valve body in cone shape pin portion,
The feature of above-mentioned solenoid valve is,
At above-mentioned valve body, circular recess is formed at around above-mentioned pin portion, be formed with the isobaric hole that this recess is communicated with the inflow side of the fluid flowing into above-mentioned valve chamber, be formed to the outstanding circular retainer in above-mentioned valve seat side around above-mentioned recess, circular stop surface is formed by the end of this retainer
When above-mentioned valve seat is not out of shape, when above-mentioned pin portion makes above-mentioned valve port be valve closing state, above-mentioned retainer leaves established amount from above-mentioned valve seat.
2. a guide electromagnetic valve, is characterized in that,
Solenoid valve according to claim 1 is possessed as leading type valve, and possesses:
With the piston valve that can arrange in the mode of axial direction movement in the above-mentioned valve chamber of cylindrical shape; And
Main valve seat arranged opposite with above-mentioned piston valve on above-mentioned axis,
The above-mentioned valve seat of claim 1 is the guide's valve seat being formed at above-mentioned piston valve, and the above-mentioned valve body of claim 1 is guide valve blocks arranged opposite with above-mentioned guide's valve seat in above-mentioned valve chamber.
CN201310003757.1A 2012-01-05 2013-01-05 Solenoid valve and guide electromagnetic valve Active CN103195968B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-000644 2012-01-05
JP2012000644A JP5566407B2 (en) 2012-01-05 2012-01-05 Solenoid valve and pilot solenoid valve

Publications (2)

Publication Number Publication Date
CN103195968A CN103195968A (en) 2013-07-10
CN103195968B true CN103195968B (en) 2015-07-29

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Publication number Priority date Publication date Assignee Title
CN109506033A (en) * 2017-09-14 2019-03-22 浙江三花制冷集团有限公司 A kind of guide electromagnetic valve
JP7189676B2 (en) * 2018-04-26 2022-12-14 川崎重工業株式会社 Poppet type flow control valve
CN110594479B (en) * 2019-09-12 2024-04-05 江苏国富氢能技术装备股份有限公司 Pilot-operated electromagnetic valve in bottleneck valve
CN112930954B (en) * 2021-02-04 2022-11-11 湖南三农设施集团股份有限公司 Ventilation type farming big-arch shelter

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CN103195968A (en) 2013-07-10
JP2013139858A (en) 2013-07-18

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