CN102996883B - A kind of solenoid valve - Google Patents
A kind of solenoid valve Download PDFInfo
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- CN102996883B CN102996883B CN201110273388.9A CN201110273388A CN102996883B CN 102996883 B CN102996883 B CN 102996883B CN 201110273388 A CN201110273388 A CN 201110273388A CN 102996883 B CN102996883 B CN 102996883B
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Abstract
The invention discloses a kind of solenoid valve, comprise pilot valve (1) and be provided with the main valve (2) of main valve body (4), described main valve body (4) is provided with primary valve (41) and piston (5), and described pilot valve (1) is provided with needle (12) and pilot valve mouth (13); Described pilot valve (1) is connected on the pilot valve joint (47) of described main valve body (4) with its shell (14); Described pilot valve (1) also comprises the guide valve seat (8) being provided with the first center hole (81), and described needle (12) stretches into or opens or close described pilot valve mouth (13) through this first center hole (81); Shell (14) described in the upper support of described guide valve seat (8), removably connects between the bottom of described guide valve seat (8) and described pilot valve joint (47).The structural design of this solenoid valve can make to realize between main valve and pilot valve removably connecting, and thus can change pilot valve after pilot valve damages, and main valve continues to use, and avoids solenoid valve entirety to scrap.
Description
Technical field
The present invention relates to refrigerant fluid control component technical field, particularly a kind of solenoid valve.
Background technique
At refrigeration technology field, guide electromagnetic valve is the cold medium flux controlling component of chiller plant, and its working procedure is generally: along with unlatching or the closedown of the pilot valve mouth of pilot valve, and the primary valve of main valve is opened or closed, thus controls circulation and the interruption of refrigerant.Detailed introduction is made below by the structure of this solenoid valve and working procedure.
Particularly, please refer to Fig. 1, Fig. 1 is the structural representation of a kind of solenoid valve in prior art.This solenoid valve comprises electromagnetic coil 3 ', pilot valve 1 ' and main valve 2 '; Particularly, as shown in Figure 1, main valve 2 ' is provided with main valve body 4 ', and main valve body 4 ' is provided with primary valve 4 ' 1 and opens or close the piston 5 ' of this primary valve 4 ' 1, and piston 5 ' is located in piston cavity 4 ' 2; In addition, main valve body 4 ' both sides are respectively equipped with and tap into oral cavity 4 ' 3 and pick out oral cavity 4 ' 4, this is tapped into oral cavity 4 ' 3 and is communicated with the piston cavity 4 ' 2 being positioned at end cap 6 ' side by throttling passage 5 ' 1, this picks out oral cavity 4 ' 4 and is communicated with primary valve 4 ' 1, and this is picked out oral cavity 4 ' 4 and is communicated with the piston cavity 4 ' 2 being positioned at end cap 6 ' side by pilot passage, the circulation area of this pilot passage is greater than the circulation area of throttling passage 5 ' 1, and tap into oral cavity 4 ' 3 and be connected with inlet tube 7 ' 1, pick out oral cavity 4 ' 4 and be connected with outer pipe 7 ' 2; Moreover as shown in Figure 1, piston 5 ' and end cap 6 ' are also provided with the first returning spring 5 ' 2, piston 5 ' can move in piston cavity 4 ' 2, thus can open or close primary valve 4 ' 1.
As shown in Figure 1, the top of main valve body 4 ' is located at by pilot valve 1 ', comprises shell 1 ' 4, and shell 1 ' 4 is provided with rotor part 1 ' 5, and rotor part 1 ' 5 and nut 1 ' 6 pass through screw-driven.During installation, as shown in Figure 1, nut 1 ' 6 and bearing support 1 ' 7 interference fit are in the respective aperture that main valve body 4 ' is upper, and the needle 1 ' 2 simultaneously connected below rotor part 1 ' 5 is through the needle pilot hole on bearing support 1 ' 7, stretch in pilot valve chamber 1 ' 1, open or close pilot valve mouth 1 ' 3.In addition, as shown in Figure 1, the top of rotor part 1 ' 5 is provided with stop component 1 ' 8.
The specific works process of above-mentioned solenoid valve is as follows:
In a state of use, inlet tube 7 ' 1 connects medium zone of high pressure to this solenoid valve, and outer pipe 7 ' 2 connects medium low pressure area.When this solenoid valve being made to be in open circulation status, electromagnetic coil 3 ' is energized, under the effect of coil electromagnetic force, rotor part 1 ' 5 rotates counterclockwise, simultaneously due to the screw-thread fit transmission between rotor part 1 ' 5 and nut 1 ' 6, thus rotor part 1 ' 5 moves upward vertically, and then drives needle 1 ' 2 to move upward, thus opens pilot valve mouth 1 ' 3, now, through horizontal channel 4 ' 5 in the high-pressure medium short time in piston cavity 4 ' 2, pilot valve chamber 1 ' 1, pilot valve mouth 1 ' 3 and Vertical Channel 4 ' 6 drain into low pressure area in outer pipe 7 ' 2, circulation area due to the throttling passage 5 ' 1 on piston 5 ' is less than the circulation area of pilot passage, therefore the pressure in piston cavity 4 ' 2 reduces rapidly, left low right high pressure reduction is formed like this at piston 5 ' two ends, this difference force overcomes the elastic force of the first returning spring 5 ' 2, force piston 5 ' to end cap 6 ' lateral movement, until collide with end cap 6 ', thus open primary valve 4 ' 1, medium flows into outer pipe 7 ' 2 from inlet tube 7 ' 1 by primary valve 4 ' 1, this solenoid valve is opened.
When electromagnetic coil 3 ' is oppositely energized, under the effect of coil electromagnetic force, rotor part 1 ' 5 rotates clockwise, simultaneously due to the screw-thread fit transmission between rotor part 1 ' 5 and nut 1 ' 6, thus rotor part 1 ' 5 moves downward vertically, and then drive needle 1 ' 2 to move downward, thus close pilot valve mouth 1 ' 3; Now, high-pressure medium is input to piston cavity 4 ' 2 by inlet tube 7 ' 1 by throttling passage 5 ' 1, because pilot valve mouth 1 ' 3 is closed, high-pressure medium in piston cavity 4 ' 2 cannot be discharged by pilot passage, thus in piston cavity 4 ' 2, the high pressure identical with in inlet tube 7 ' 1 is formed, the elastic force of this high pressure and the first returning spring 5 ' 2 forces piston 5 ' to move to primary valve 4 ' 1, until piston 5 ' closes primary valve 4 ' 1, makes this solenoid valve be in closed condition.
But the solenoid valve of said structure has following defect:
The first, the Placement between the shell 1 ' 4 of pilot valve 1 ' and the main valve body 4 ' of main valve 2 ' for being welded and fixed, in follow-up assembling or using process, after pilot valve 1 ' damages, owing to cannot take apart between pilot valve 1 ' and main valve 2 ', thus solenoid valve entirety is scrapped, and the cost that causes damage is high.
Second, in the nut mounting hole being press-fitted to main valve body 4 ' respectively by interference fit as the nut 1 ' 6 of drive part and the bearing support 1 ' 7 of targeting part and bearing support mounting hole, and because the needle pilot hole on nut mounting hole and bearing support 1 ' 7 is individually processed, the coaxality of thus assembling between back nut mounting hole and needle pilot hole is difficult to ensure, and then causing the coaxality of needle pilot hole and needle 1 ' 2 to be difficult to ensure, it is stuck or action is bad that needle 1 ' 2 is easy to generation.
3rd, pilot valve mouth 1 ' 3 and needle 1 ' 2 form sealing configuration, thus require very high to the quality of processing of pilot valve mouth 1 ' 3, but because pilot valve mouth 1 ' 3 is located on main valve body 4 ', the out-of-shape of main valve body 1 ', when processing pilot valve mouth 1 ' 3, very inconvenient to the clamping of main valve body 4 ', cause the difficulty of processing of pilot valve mouth 1 ' 3 comparatively large, the quality of processing of pilot valve mouth 1 ' 3 is difficult to ensure.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of solenoid valve, and the structural design of this solenoid valve can make to realize between main valve and pilot valve removably connecting, and thus can change pilot valve after pilot valve damages, and main valve continues to use, and avoids solenoid valve entirety to scrap.
For solving the problems of the technologies described above, the invention provides a kind of solenoid valve, comprise pilot valve and the main valve being provided with main valve body, described main valve body is provided with primary valve and piston, described pilot valve is provided with needle and pilot valve mouth, open along with described needle or close described pilot valve mouth, described piston is correspondingly opened or is closed described primary valve; Described pilot valve is connected on the pilot valve joint of described main valve body with its shell; Described pilot valve also comprises the guide valve seat being provided with the first center hole, and described needle stretches into or opens through this first center hole or close described pilot valve mouth; Shell described in the upper support of described guide valve seat, removably connects between the bottom of described guide valve seat and described pilot valve joint.
Preferably, the bottom of described guide valve seat and described pilot valve joint are removably connected by attaching nut; Described pilot valve joint offers the first mounting groove, the bottom of described guide valve seat is located in this first mounting groove, the peripheral outer wall of described pilot valve joint offers external thread part, the week that described attaching nut is located at described guide valve seat externally and with described external thread part screw-thread fit.
Preferably, the week of described guide valve seat externally offers circular groove, is provided with back-up ring in this circular groove, and described nut is stuck in the week of described guide valve seat externally by this back-up ring.
Preferably, described pilot valve mouth is opened on described guide valve seat further.
Preferably, the lower end of described guide valve seat is extended with bump, and this bump offers the second central through bore be communicated with the first center hole of described guide valve seat, pilot valve mouth described in the upper end hole interruption-forming that this second central through bore is positioned at described first center hole side.
Preferably, described main valve body be provided with by throttling passage be communicated with the piston cavity being positioned at end cap side tap into oral cavity and be communicated with described primary valve pick out oral cavity; Described main valve body also offers and comprises described pilot valve mouth and circulation area is greater than the pilot passage of described throttling passage, and described pilot passage comprises and picks out the Vertical Channel that oral cavity is communicated with and the horizontal channel be communicated with the piston cavity being positioned at end cap side with described.
Preferably, on the diapire installing the first mounting groove of described guide valve seat, offer the second mounting groove, described Vertical Channel runs through the diapire of described second mounting groove, and is communicated with described second central through bore; The lower end surface of described bump is supported on the diapire of described second mounting groove, and is provided with the first sealed member therebetween.
Preferably, at least one third through-hole be communicated with described first center hole is offered with the lower end surface of described guide valve seat at the outer circumferential face of described bump, this third through-hole is communicated with the second mounting groove around described bump, and the second mounting groove around described bump is communicated with described horizontal channel further.
Preferably, described main valve body offers inclined hole, the second mounting groove around described bump is communicated with described horizontal channel further by described inclined hole.
Preferably, be formed with step between described first mounting groove and described second mounting groove, the lower end surface of described guide valve seat is supported on described step, and is provided with the second sealed member between the lower end surface of described guide valve seat and described step.
Preferably, described pilot valve also comprises bearing support, and the upper end of described guide valve seat is provided with the 3rd mounting groove installing described bearing support.
Preferably, described bearing support has integrally been processed to form nut mounting hole and needle pilot hole, and the nut of described pilot valve is installed in this nut mounting hole, and the needle of described rotor part is opened through this needle pilot hole or closes described pilot valve mouth.
Preferably, described guide valve seat upper end offers installation step, and on this installation step, suit is supported with cover cap, and described guide valve seat is by shell described in this cap support.
On the basis of existing technology, solenoid valve provided by the present invention, also comprises the guide valve seat being provided with the first center hole, and described needle stretches into or opens through this first center hole or close described pilot valve mouth; Shell described in the upper support of described guide valve seat, removably connects between the bottom of described guide valve seat and described pilot valve joint.Owing to removably connecting between the pilot valve joint on guide valve seat and main valve body, thus after pilot valve damages, the connection between guide valve seat and pilot valve joint is taken apart, thus change pilot valve, continue to use main valve, avoid solenoid valve entirety to scrap.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of solenoid valve in prior art;
Fig. 2 is the structural representation of solenoid valve in an embodiment of the present invention;
Fig. 3 is the structural representation of the pilot valve of solenoid valve in Fig. 2;
Fig. 4 is the axonometric drawing after the pilot valve removal nut in Fig. 3;
Fig. 5 is the structural representation of the guide valve seat of pilot valve in Fig. 2 to Fig. 4.
Wherein, the corresponding relation in Fig. 1 between reference character and component names is:
1 ' pilot valve; 1 ' 1 pilot valve chamber; 1 ' 2 needles; 1 ' 3 pilot valve mouths; 1 ' 4 shells; 1 ' 5 rotor parts; 1 ' 6 nuts; 1 ' 7 bearing supports; 1 ' 8 stop components;
2 ' main valve;
3 ' electromagnetic coil;
4 ' main valve body; 4 ' 1 primary valve; 4 ' 2 piston cavity; 4 ' 3 tap into oral cavity; 4 ' 4 pick out oral cavity; 4 ' 5 horizontal channels; 4 ' 6 Vertical Channel;
5 ' piston; 5 ' 1 throttling passage; 5 ' 2 first returning springs;
6 ' end cap;
7 ' 1 inlet tube; 7 ' 2 outer pipes.
Wherein, the corresponding relation in Fig. 2 to Fig. 5 between reference character and component names is:
1 pilot valve; 12 needles; 13 pilot valve mouths; 14 shells; 15 rotor parts; 16 nuts; 17 bearing supports; 17a nut mounting hole; 17b needle pilot hole; 18 stop components; 19 cover caps;
2 main valves; 21 attaching nuts; 22 back-up rings;
3 electromagnetic coils;
4 main valve bodies; 41 primary valves; 42 piston cavity; 43 tap into oral cavity; 44 pick out oral cavity; 45 horizontal channels; 46 Vertical Channel; 47 pilot valve joints; 47a first mounting groove; 47b second mounting groove; 48 inclined holes;
5 pistons; 51 throttling passages; 52 first returning springs;
6 end caps;
71 inlet tubes; 72 outer pipes;
8 guide valve seats; 81 first center holes; 82 circular grooves; 83 bumps; 84 second central through bores; 85 first sealed members; 86 third through-holes; 87 second sealed members; 88 the 3rd mounting grooves.
Embodiment
Core of the present invention is for providing a kind of solenoid valve, and the structural design of this solenoid valve can make to realize between main valve and pilot valve removably connecting, and thus can change pilot valve after pilot valve damages, and main valve continues to use, and avoids solenoid valve entirety to scrap.
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, Fig. 2 is the structural representation of solenoid valve in an embodiment of the present invention; Fig. 3 is the structural representation of the pilot valve of solenoid valve in Fig. 2; Fig. 4 is the axonometric drawing after the pilot valve removal nut in Fig. 3; Fig. 5 is the structural representation of the guide valve seat of pilot valve in Fig. 2 to Fig. 4.
In one embodiment, as shown in Figure 2, this solenoid valve comprises electromagnetic coil 3, pilot valve 1 and main valve 2; Particularly, as shown in Figure 2, main valve 2 is provided with main valve body 4, and main valve body 4 is provided with primary valve 41 and opens or close the piston 5 of this primary valve 41, and piston 5 is located in piston cavity 42; In addition, main valve body 4 both sides are respectively equipped with and tap into oral cavity 43 and pick out oral cavity 44, this is tapped into oral cavity 43 and is communicated with the piston cavity 42 being positioned at end cap 6 side by throttling passage 51, this picks out oral cavity 44 and is communicated with primary valve 41, and this is picked out oral cavity 44 and is communicated with the piston cavity 42 being positioned at end cap 6 side by pilot passage, and the circulation area of this pilot passage is greater than the circulation area of throttling passage 51, taps into oral cavity 43 and be connected with inlet tube 71, pick out oral cavity 44 and be connected with outer pipe 72; Moreover as shown in Figure 1, be also provided with the first returning spring 52 between piston 5 and end cap 6, piston 5 can move in piston cavity 42, thus can open or close primary valve 41.
As shown in Figure 2, the top of main valve body 4 is located at by pilot valve 1, comprises shell 14, and shell 14 is provided with rotor part 15, and rotor part 15 and nut 16 pass through screw-driven.Meanwhile, the needle 12 connected below rotor part 15 is opened through the needle pilot hole on bearing support 17 or is closed pilot valve mouth 13.In addition, as shown in Figure 1, the top of rotor part 1 ' 5 is provided with stop component 18.
Particularly, on the basis of said structure, as shown in Figure 2, pilot valve 1 also comprises the guide valve seat 8 being provided with the first center hole 81, and needle 12 stretches into or opens or close pilot valve mouth 13 through this first center hole 81; The upper support shell 14 of guide valve seat 8, removably connects between the bottom of guide valve seat 8 and pilot valve joint 47.Due between the pilot valve joint 47 on guide valve seat 8 and main valve body 4 for removably connecting, thus when pilot valve 1 damage after, the connection between guide valve seat 8 and pilot valve joint 47 is taken apart, thus change pilot valve 1, continue use main valve 2, avoid solenoid valve entirety to scrap.
It should be noted that, solenoid valve provided by the present invention, the working procedure of its working procedure and the solenoid valve in background technique above (that is the opening procedure of solenoid valve and closing process) is identical, does not repeat them here.
In the above-described embodiments, specific design can be made to removably connecting between guide valve seat 8 and pilot valve joint 47.Such as, as shown in Figures 2 and 3, the bottom of guide valve seat 8 and pilot valve joint 47 are removably connected by attaching nut 21; Pilot valve joint 47 offers the first mounting groove 47a, and the bottom of guide valve seat 8 is located in this first mounting groove 47a, and the peripheral outer wall of pilot valve joint 47 offers external thread part, the week that attaching nut 21 is located at guide valve seat 8 externally and with external thread part screw-thread fit.This kind of structural design conveniently achieves removably connecting between guide valve seat 8 and pilot valve joint 47 easily.
Particularly, as shown in Figure 3 and Figure 4, the week of guide valve seat 8 externally offers circular groove 82, is provided with back-up ring 22 in this circular groove 82, and attaching nut 21 is stuck in the week of guide valve seat 8 externally by this back-up ring 22.This kind of structural design achieves easily fixes the installation of attaching nut 21, and reliability is higher.
It should be noted that, any one technological scheme above-mentioned is not restricted for the position of offering of pilot valve mouth 13, and this pilot valve mouth 13 can be located on main valve body 4 as in background technique above, can certainly offer on guide valve seat 8.
Particularly, as shown in Figures 2 and 3, pilot valve mouth 13 is opened on guide valve seat 8 further.In the prior art, as shown in Figure 1, because pilot valve mouth 1 ' 3 is located on main valve body 4 ', the out-of-shape of main valve body 1 ', when processing pilot valve mouth 1 ' 3, very inconvenient to the clamping of main valve body 4 ', cause the difficulty of processing of pilot valve mouth 1 ' 3 comparatively large, the quality of processing of pilot valve mouth 1 ' 3 is difficult to ensure.
And in the present invention, as shown in Figures 2 and 3, pilot valve mouth 13 is opened on guide valve seat 8, because the shape of guide valve seat 8 is comparatively regular, thus when processing pilot valve mouth 13 on guide valve seat 8, easily more convenient to the clamping of guide valve seat 8, thus can reduce the difficulty of processing of pilot valve mouth 13, and then ensure the quality of processing of pilot valve mouth 13.
Particularly, as shown in Fig. 3, Fig. 4 and Fig. 5, the lower end of guide valve seat 8 is extended with bump 83, and this bump 83 offers the second central through bore 84 be communicated with the first center hole 81 of guide valve seat 8, and this second central through bore 84 is positioned at the upper end hole interruption-forming pilot valve mouth 13 of the first center hole 81 side.In this kind of structure, because the 3rd mounting groove 88, first center hole 81 of installation shaft bearing 17 and the second central through bore 84 can be formed in a Vehicle Processing, thus can facilitate the processing of pilot valve mouth 13; In addition, because the 3rd mounting groove 88, first center hole 81 and the second central through bore 84 can be formed in a Vehicle Processing, good coaxality can be kept between three, finally can improve the coaxality level between needle 12 and pilot valve mouth 13.
In any one technological scheme above-mentioned, further design can be made.Such as, as shown in Figure 2, pilot passage comprises and picks out the Vertical Channel 46 that oral cavity 44 is communicated with and the horizontal channel 45 be communicated with the piston cavity 42 being positioned at end cap 6 side.
Further, as shown in Figure 2, on the diapire installing the first mounting groove 47a of guide valve seat 8, offer the second mounting groove 47b, Vertical Channel 46 runs through the diapire of the second mounting groove 47b, and is communicated with the second central through bore 84; The lower end surface of bump 83 is supported on the diapire of the second mounting groove 47b, and is provided with the first sealed member 85 therebetween.When pilot valve mouth 13 is opened, the sealing that this kind of structural design achieves between pilot valve mouth 13 with Vertical Channel 46 is communicated with.
In addition, as shown in Fig. 3, Fig. 4 and Fig. 5, around bump 83, the lower end surface of guide valve seat 8 offers the third through-hole 86 that at least one is communicated with the first center hole 81, this third through-hole 86 is communicated with the second mounting groove 47b around bump 83, and the second mounting groove 47b around bump 83 is communicated with horizontal channel 45 further.When pilot valve mouth 13 is opened, this kind of structural design achieves again being communicated with between pilot valve mouth 13 with horizontal channel 45, thus finally achieves being communicated with between Vertical Channel 46 with horizontal channel 45 when pilot valve mouth 13 is opened.
Further, for convenience of the second mounting groove 47b and being communicated with between horizontal channel 45, as shown in Figure 2, main valve body 4 offers inclined hole 48, the second mounting groove 47b around bump 83 is communicated with horizontal channel 45 further by inclined hole 48.
Particularly, as shown in Figure 2, be formed with step between the first mounting groove 47a and the second mounting groove 47b, the lower end surface of guide valve seat 8 is supported on step, and is provided with the second sealed member 87 between the lower end surface of guide valve seat 8 and step.This kind of structural design makes guide valve seat 8 be sealedly attached in the first mounting groove 47a, thus makes the fluid environment of solenoid valve inside form isolating seal with outside.
In any one technological scheme above-mentioned, further improvement can also be made.Particularly, as shown in Fig. 2, Fig. 3 and Fig. 5, pilot valve 1 also comprises bearing support 17, and the upper end of guide valve seat 8 is provided with the 3rd mounting groove 88 of installation shaft bearing 17.
Further, bearing support 17 has integrally been processed to form nut mounting hole 17a and needle pilot hole 17b, and nut 16 is installed in this nut mounting hole 17a, and needle 12 is opened through this needle pilot hole 17b or closed pilot valve mouth 13.In this kind of structure, because nut mounting hole 17a and needle pilot hole 17b is integrally processed to form, therebetween good coaxality can be kept, thus good coaxality can be kept between nut 16 and needle pilot hole 17b, and then the good coaxality of maintenance with nut 16 between coaxial needle 12 and needle pilot hole 17b, thus can avoid that needle 12 is stuck or action is bad.
Further, as shown in Figure 2, guide valve seat 8 upper end offers installation step, and on this installation step, suit is supported with cover cap 19, and guide valve seat 8 is by this cover cap 19 supporting outer 14.The support that this kind of structural design achieves guide valve seat 8 pairs of shells 14 is easily fixed, and reliability is higher.
Above a kind of solenoid valve provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (13)
1. a solenoid valve, comprise pilot valve (1) and be provided with the main valve (2) of main valve body (4), described main valve body (4) is provided with primary valve (41) and piston (5), described pilot valve (1) is provided with needle (12) and pilot valve mouth (13), along with described pilot valve mouth (13) is opened or closed to described needle (12), described primary valve (41) is correspondingly opened or closed to described piston (5); Described pilot valve (1) is connected on the pilot valve joint (47) of described main valve body (4) with its shell (14); It is characterized in that, described pilot valve (1) also comprises the guide valve seat (8) being provided with the first center hole (81), and described needle (12) stretches into or opens or close described pilot valve mouth (13) through this first center hole (81); Shell (14) described in the upper support of described guide valve seat (8), removably connects between the bottom of described guide valve seat (8) and described pilot valve joint (47).
2. solenoid valve as claimed in claim 1, it is characterized in that, bottom and the described pilot valve joint (47) of described guide valve seat (8) are removably connected by attaching nut (21); Described pilot valve joint (47) offers the first mounting groove (47a), the bottom of described guide valve seat (8) is located in this first mounting groove (47a), the peripheral outer wall of described pilot valve joint (47) offers external thread part, the week that described attaching nut (21) is located at described guide valve seat (8) externally and with described external thread part screw-thread fit.
3. solenoid valve as claimed in claim 2, it is characterized in that, described guide valve seat (8) externally offer circular groove (82) week, be provided with back-up ring (22) in this circular groove (82), described attaching nut (21) is stuck in the week of described guide valve seat (8) externally by this back-up ring (22).
4. the solenoid valve as described in any one of claims 1 to 3, is characterized in that, described pilot valve mouth (13) is opened on described guide valve seat (8) further.
5. solenoid valve as claimed in claim 4, it is characterized in that, the lower end of described guide valve seat (8) is extended with bump (83), this bump (83) offers the second central through bore (84) be communicated with first center hole (81) of described guide valve seat (8), pilot valve mouth (13) described in the upper end hole interruption-forming that this second central through bore (84) is positioned at described first center hole (81) side.
6. solenoid valve as claimed in claim 5, it is characterized in that, described main valve body (4) be provided with by throttling passage (51) be connected with the piston cavity (42) being positioned at end cap (6) side tap into oral cavity (43) and be connected with described primary valve (41) pick out oral cavity (44);
Described main valve body (4) also offers the pilot passage comprising described pilot valve mouth (13), and its circulation area is greater than the circulation area of described throttling passage (51), described pilot passage comprises and picks out the Vertical Channel (46) that oral cavity (43) is connected and the horizontal channel (45) be connected with the piston cavity (42) being positioned at end cap (6) side with described.
7. solenoid valve as claimed in claim 6, it is characterized in that, described pilot valve joint (47) offers the first mounting groove (47a), the second mounting groove (47b) is offered on the diapire installing first mounting groove (47a) of described guide valve seat (8), described Vertical Channel (46) runs through the diapire of described second mounting groove (47b), and is communicated with described second central through bore (84); The lower end surface of described bump (83) is supported on the diapire of described second mounting groove (47b), and is provided with the first sealed member (85) therebetween.
8. solenoid valve as claimed in claim 7, it is characterized in that, the third through-hole (86) that at least one is communicated with described first center hole (81) is offered between described bump (83) outer circumferential face and the lower end surface of described guide valve seat (8), this third through-hole (86) is communicated with described bump (83) the second mounting groove (47b) around, and described bump (83) the second mounting groove (47b) is around communicated with described horizontal channel (45) further.
9. solenoid valve as claimed in claim 8, it is characterized in that, described main valve body (4) offers inclined hole (48), described bump (83) the second mounting groove (47b) is around communicated with described horizontal channel (45) further by described inclined hole (48).
10. the solenoid valve as described in any one of claim 7 to 9, it is characterized in that, step is formed between described first mounting groove (47a) and described second mounting groove (47b), the lower end surface of described guide valve seat (8) is supported on described step, and is provided with the second sealed member (87) between the lower end surface of described guide valve seat (8) and described step.
11. solenoid valves as described in any one of claims 1 to 3, it is characterized in that, described pilot valve (1) also comprises bearing support (17), and the upper end of described guide valve seat (8) is provided with the 3rd mounting groove (88) installing described bearing support (17).
12. solenoid valves as claimed in claim 11, it is characterized in that, described bearing support (17) has integrally been processed to form nut mounting hole (17a) and needle pilot hole (17b), the nut (16) of described pilot valve (1) is installed in this nut mounting hole (17a), and described pilot valve mouth (13) is opened or closed to described needle (12) through this needle pilot hole (17b).
13. solenoid valves as claimed in claim 11, it is characterized in that, described guide valve seat (8) upper end offers installation step, on this installation step, suit is supported with cover cap (19), and described guide valve seat (8) supports described shell (14) by this cover cap (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110273388.9A CN102996883B (en) | 2011-09-15 | 2011-09-15 | A kind of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110273388.9A CN102996883B (en) | 2011-09-15 | 2011-09-15 | A kind of solenoid valve |
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| Publication Number | Publication Date |
|---|---|
| CN102996883A CN102996883A (en) | 2013-03-27 |
| CN102996883B true CN102996883B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110273388.9A Active CN102996883B (en) | 2011-09-15 | 2011-09-15 | A kind of solenoid valve |
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| CN (1) | CN102996883B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074996B (en) * | 2013-03-28 | 2018-03-23 | 浙江三花制冷集团有限公司 | Bidirectional electromagnetic valve |
| CN107061762B (en) * | 2016-12-13 | 2022-03-25 | 盾安环境技术有限公司 | Connecting structure and method for pilot valve and main valve body |
| CN108266563B (en) * | 2016-12-30 | 2020-09-29 | 浙江三花汽车零部件有限公司 | Pilot-operated electromagnetic valve |
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| JP3397862B2 (en) * | 1993-11-30 | 2003-04-21 | 株式会社デンソー | Expansion valve with solenoid valve |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654930Y (en) * | 2003-11-20 | 2004-11-10 | 云南省机械研究设计院 | Wire retainer ring clamping head locking nut assembly |
| CN2743635Y (en) * | 2004-09-21 | 2005-11-30 | 浙江三花股份有限公司 | New type straight moving electro magnetic valve |
| CN101994860A (en) * | 2009-08-14 | 2011-03-30 | 浙江三花股份有限公司 | Electromagnetic valve and heat exchange device comprising same |
| CN102052468A (en) * | 2009-11-01 | 2011-05-11 | 浙江三花制冷集团有限公司 | Flow path switch control device |
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