CN204042034U - A kind of solenoid valve - Google Patents
A kind of solenoid valve Download PDFInfo
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- CN204042034U CN204042034U CN201420516821.6U CN201420516821U CN204042034U CN 204042034 U CN204042034 U CN 204042034U CN 201420516821 U CN201420516821 U CN 201420516821U CN 204042034 U CN204042034 U CN 204042034U
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- piston
- sealing gasket
- solenoid valve
- valve
- elastic element
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Abstract
The utility model discloses a kind ofly comprise piston only, the sealing gasket that is inlaid in piston only, the piston of pad that limits sealing gasket axial motion, the piston only of this piston has the receiving cavity that is held sealing gasket, arrange elastic element in this receiving cavity, described elastic element offsets and is arranged between described piston only and described sealing gasket.By the Curve guide impeller to piston structure, the impact force between sealing gasket and primary valve can be reduced, reduce the wearing and tearing of sealing gasket, thus effectively improve sealing and the working life of sealing gasket.On this basis, the utility model also provides a kind of solenoid valve with this piston.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of piston of solenoid valve.In addition, the utility model also relates to a kind of solenoid valve with this piston.
Background technique
Solenoid valve, as a kind of Electronic control element, is widely used in, on automatic system pipeline, pipe-line system being played to the effect of control switch.Along with the requirement of modern industry to automatic system improves constantly, to the service behaviour of solenoid valve, working life, requirement also day by day improved.
The basic functional principle of solenoid valve produces magnetic force by the electromagnetic coil on its valve body, thus the motion of control valve body inner spool, realize the function that solenoid valve operationally opens and closes.From principle, the working forms according to solenoid valve can be divided into: direct action solenoid valve, step direct-acting type electromagnetic valve, guide electromagnetic valve.Wherein, the piston electromagnetic valve of extensive use in chiller plant is a kind of typical design solution of guide electromagnetic valve, because the fluid pressure range upper limit of guide electromagnetic valve is higher, the application in chiller plant is more and more extensive, the particularly application of big caliber electromagnetic valve.Therefore, the research and development of this type of solenoid valve are more and more come into one's own.
In the prior art, the sealing gasket of piston electromagnetic valve is inlaid in piston, and its sealing gasket surface directly abuts with piston only, thus makes sealing gasket and primary valve be in the state of being rigidly connected, shown in Figure 1.When electromagnetic valve work, constantly carry out opening and closing action, especially exist, when valve body is closed, sealing gasket, under the effect of piston revert spring force, produces larger rigid impact with primary valve.Under this working state repeatedly, sealing gasket easily produces serious wearing and tearing, causes the sealing of sealing gasket to reduce, decreases the working life of sealing gasket, meanwhile, causes the service behaviour of solenoid valve to decline, reduces its working life.
In view of this, need the Structure Improvement Design to piston of electromagnetic valve badly, effectively reduce sealing gasket and primary valve impact force, solve the problem of sealing gasket heavy wear, thus improve sealing and the working life of sealing gasket.
Model utility content
For above-mentioned defect, the technical problems to be solved in the utility model is to provide a kind of solenoid valve, by the Curve guide impeller to piston structure, can reduce the impact force between sealing gasket and primary valve, reduce the wearing and tearing of sealing gasket, thus effectively improve sealing and the working life of sealing gasket.
The solenoid valve that the utility model provides, comprise the valve seat being provided with valve pocket, described valve pocket internal fixtion is provided with piston seat, the piston coordinating slip is therein provided with in described piston seat, the pad that described piston comprises piston only, is inlaid in the sealing gasket of piston only, limits sealing gasket axial motion, described piston only has the receiving cavity that is held described sealing gasket, arrange elastic element in described receiving cavity, described elastic element offsets and is arranged between described piston only and described sealing gasket.
Preferably, the opening end of described receiving cavity has limited step, and extends to form caulking part from described step; After described pad and described step offset, described caulking part bends towards described piston axis and compresses described pad.
Preferably, the circumferential wall Spielpassung of described sealing gasket and described receiving cavity inside.
Preferably, described elastic element is Compress Spring.
Preferably, the closed end of described receiving cavity has limited support seat, and described elastic element and described supporting base are socketed.
Preferably, the central diameter of described Compress Spring along the axis projection of described piston at the sealing surface of primary valve.
Preferably, described piston only has the first fixing boss seat of fitting piston returning spring, and described first boss seat is placed in the dorsal part of described supporting base; Described valve seat has the second boss seat coordinating described piston revert spring fixing.
Preferably, described elastic element is butterfly spring.
Preferably, the side of described supporting base offers the pressure relief vent of axially through described piston only.
The utility model provides a kind of solenoid valve, it pad comprising piston only, be inlaid in the sealing gasket of piston only, limit sealing gasket axial motion, its piston only has the receiving cavity that is held sealing gasket, in this receiving cavity, elastic element is set, meanwhile, elastic element offsets and is arranged between piston only and sealing gasket.According to the principle Analysis of piston actual act, after drive coil power-off, electromagnetic force disappears, and core iron is the motion of guide valve port under the active force of returning spring, abuts against with pilot valve mouth, now, valve body pilot valve mouth is closed, and the high-pressure medium of valve body import hyperbaric chamber flows to piston back pressure cavity by equalizing orifice, when the pressure at two ends, piston left and right be tending towards equal after, piston to the motion of valve body primary valve, makes valve body primary valve close under the effect of piston revert spring force.
Compared with prior art, in above process, when sealing gasket along with piston moves to valve body primary valve, and the moment contacted with valve port, offset the elastic element be arranged between piston only and sealing gasket, and absorption portion energy reduces the impact force that sealing gasket moves to primary valve.Like this, the impact force between sealing gasket and valve body primary valve can being made to reduce, thus decrease the wearing and tearing of sealing gasket in knockout process, and then greatly can improve the working life of sealing gasket, providing reliable guarantee for effectively improving sealing effect.Meanwhile, the working life of solenoid valve can also be extended, guarantee the service behaviour that whole system is stable.
In preferred version of the present utility model, the sealed end of receiving cavity has limited support seat, and this supporting base and elastic element are socketed.By design like this, when piston action, the elastic element being socketed in supporting base can be driven to promote sealing gasket motion.Like this, this supporting base can improve elastic element stability in the process, ensures this elastic element fixing in axial direction position, thus is subject to uniform power when sealing gasket can be made to move, ensure sealing gasket and the good laminating of valve body primary valve, guarantee sealing effect.
In another preferred version of the present utility model, the opening end of receiving cavity has limited step, and this step extends to form caulking part; After pad and step offset, caulking part can bend towards piston axis direction, and compresses this pad.After elastic element and pad offset, the sealing surface of pad parallels with step, and pad can be made to abut with sealing gasket, and is compressed by the distortion of caulking part, the position of fixing restriction sealing gasket and movable amplitude.In addition, the structure of limited step is simple herein, and easy processing, can greatly reduce labor content, saves cost.Meanwhile, by simple step design, just can realize the fixing of pad and sealing gasket relative position, therefore, this step is not only convenient to the installation of pad and sealing gasket, can also accurately locating washer and sealing gasket.
In another preferred version of the present utility model, the side of supporting base offers the pressure relief vent of axially through piston only.When piston is at the move under influence of pressure reduction, when the primary valve of valve body is opened, the medium of low-pressure cavity can be caused to enter in receiving cavity by the space between sealing gasket and receiving cavity circumference, remain in the space between sealing gasket and piston only.By designing this pressure relief vent, can too high pressure between removal sealing gasket and piston only, eliminate the impact of the rigid state that therefore may cause, guarantee the working state of elastic element self, thus ensure the reliability of piston action in the program further, improve the service behaviour of whole system.。
Accompanying drawing explanation
Fig. 1 is piston structure schematic diagram in prior art;
Fig. 2 is the structural representation of the piston only of solenoid valve in the first embodiment;
Fig. 3 is the structural representation of the piston of solenoid valve in the first embodiment;
Fig. 4 is the structural representation of solenoid valve in application first embodiment;
Fig. 5 is the structural representation of the piston of solenoid valve in the second embodiment.
In Fig. 2 to Fig. 5:
Piston 1, valve seat 2, valve gap 3, returning spring 4, core iron 5, piston revert spring 6;
Piston only 11, Compress Spring 12, sealing gasket 13, pad 14, belleville spring 15, equalizing orifice 21, opening 22, pilot valve mouth 23, passage 24, back pressure cavity 25, second boss seat 26, hyperbaric chamber 27, low-pressure cavity 31, primary valve 32;
Receiving cavity 111, supporting base 112, step 113, caulking part 114, pressure relief vent 115, first boss seat 116.
Embodiment
Based on piston of the prior art, core of the present utility model improves for the connection of its structure and parts, provides a kind of piston that can reduce sealing gasket wearing and tearing, improve sealing gasket working life and sealing.Another core of the present utility model is to provide a kind of solenoid valve with this piston.
In order to make the operator of the art understand the utility model scheme better, illustrate present embodiment below in conjunction with Figure of description.
Refer to Fig. 2, Fig. 3, Fig. 4, Fig. 2 is the structural representation of the piston only of solenoid valve in the first embodiment; Fig. 3 is the structural representation of the piston of solenoid valve in the first embodiment; Fig. 4 is the structural representation of solenoid valve in application first embodiment.
The piston 1 that the utility model provides, comprise piston only 11, sealing gasket 13 and pad 14, sealing gasket 13 is inlaid in piston only 11, and pad 14 and sealing gasket 13 abut against, for limiting sealing gasket 13 axial motion.Piston 1 shown in Fig. 3, its piston only 11 has one and holds the receiving cavity 111 of sealing gasket 13, and this receiving cavity 111 arranges elastic element, and is offseted by this elastic element and be arranged between piston only 11 and sealing gasket 13.
Apply the working principle of the solenoid valve of this piston below in conjunction with Fig. 4 brief description, the normality of solenoid valve shown in figure is in closed condition, and namely sealing gasket 13 abuts the valve body primary valve 32 on valve gap 3.
Solenoid valve comprises the valve seat 2 being provided with valve pocket 29, and valve pocket 29 internal fixtion is provided with piston seat 28, is provided with the piston 1 coordinating slip therein in piston seat 28.
Valve body and drive coil with the use of time, when after drive coil energising, core iron 5 moves overcome the active force of returning spring 4 under the effect of electromagnetic force under, depart from the pilot valve mouth 23 on valve seat 2, thus open pilot valve mouth 23, now, the opening 22 of medium on valve seat 2 of back pressure cavity 25 flows out from pilot valve mouth 23, valve outlet low-pressure cavity 31 place is flow to via passage 24, the pressure of back pressure cavity 25 is reduced, the pressure official post piston 1 of generation like this is to back pressure cavity 25 1 lateral movement, simultaneously, the sealing gasket 13 being inlaid in piston only 11 is departed from valve body primary valve 32, valve body primary valve 32 is opened, when after drive coil power-off, electromagnetic force disappears, core iron 5 abuts pilot valve mouth 23 under the active force of returning spring 4, close pilot valve mouth 23, now, the high-pressure medium of valve body import hyperbaric chamber 27 flows to the back pressure cavity 25 of low pressure through equalizing orifice 21, after making the pressure at two ends balance of piston 1, move to valve body primary valve 32 under the effect of piston revert spring 6, and then make sealing gasket 13 abut valve body primary valve 32.
According to the working state of above-mentioned valve body, piston 1 needs perseveration in electromagnetic valve work process, and that is, sealing gasket 13 needs repeatedly to clash into valve body primary valve 32 to contact.Especially, in above-mentioned valve body primary valve 32 process, the sealing gasket 13 being inlaid in piston only 11 moves to valve body primary valve 32 along with piston 1, owing to being arranged on the effect of the elastic element between piston only 11 and sealing gasket 13, absorption portion piston only 11 passes to the energy of sealing gasket 13, thus reduces impact force when sealing gasket 13 moves to valve body primary valve 32.Therefore, by arranging elastic element, existing piston 1 being improved, can greatly reduce when valve body primary valve 32, the impact force between sealing gasket 13 and valve body primary valve 32.And then, reduce the wearing and tearing of sealing gasket 13 in larger knockout process, improve the working life of sealing gasket 13, ensure the sealing effect of sealing gasket 13.So, also just extend the operating life of valve body, alleviate the replacement frequency of staff to valve body, improve working efficiency.
Meanwhile, after this elastic element and sealing gasket 13 abut against, elastic element can adjust and control the position of sealing gasket 13, eliminates the skew of sealing gasket 13 because the state of being rigidly connected may cause and primary valve 32 position.In addition, the power that elastic element can also make piston 1 act on primary valve 32 by sealing gasket 13 is even, thus provides safeguard for sealing gasket 13 realizes effective sealing.
It should be noted that, in the present embodiment, elastic element refers to have elasticity, in above-mentioned course of action, can play bumper and absorbing shock, control sealing gasket 13 motion and can the element of press seal pad 13.Thus, in the utility model, the elastic element such as Compress Spring, butterfly spring can be adopted.
On this basis, in this programme, the closed end of receiving cavity 111 also can have limited support seat 112, and above-mentioned elastic element and this supporting base 112 are socketed.The axis of limited support seat 112 can with the axes coincide of piston 1, such design, when elastic element socket supporting base 112, eliminate the stability that its skew at vertical piston 1 axial direction improves elastic element position in course of action, thus give sealing gasket 13 uniform and stable thrust, ensure the laminating that sealing gasket 13 can be good with valve body primary valve 32, effectively improve sealing effect.In addition, when piston 1 action, the elastic element being socketed in supporting base 112 can eliminate the impact of the small deflection that piston 1 produces, by initiatively finely tuning the position of sealing gasket 13, reach combining closely between sealing gasket 13 and valve body primary valve 32, guarantee that valve body has better sealing, reduce the energy consumption of whole system.
It should be noted that, supporting base 112 can design for boss, and its section shape along vertical axis direction can be circular, square etc.The section shape of this supporting base 112 matches with the socket place of elastic element, can ensure the firm socket of elastic element, and can be convenient to install.
Further, the circumferential wall of receiving cavity 111 and sealing gasket 13 are Spielpassung.In other words, the circumferential wall of receiving cavity 111 can be used as the axial motion of confined planes to sealing gasket 13 and plays leading role.Thus the position skew that elimination sealing gasket 13 produces in this movement process, and then improve its sealing effect.
On the basis of the above, shown in Figure 2, the opening end of receiving cavity 111 also can have limited step 113, and this step 113 extends to form caulking part 114.Shown in Figure 3, in actual applications, sealing gasket 13 is placed in receiving cavity 111 by this programme, after abutting against, the sealing surface of sealing gasket 13 is paralleled with elastic element with this step 113.Afterwards, pad 14 and this step 113 are abutted against, thus the sealing surface of sealing gasket 13 is abutted with pad 14, by caulking part 114 is bent towards piston 1 axis, utilize caulking part 114 to be out of shape and compress above-mentioned pad 14, and then its skew of the position limitation of fixing seal pad 13, the sealing effect further for improving sealing gasket 13 provides reliable guarantee.
In addition, the processing technology of this step 113 is simple, as shown in Figure 2, only need process one section of platform structure at the opening end of receiving cavity 111, meanwhile, processes one section of thin-wall face of generation from step 113 extension as caulking part 114.Carrying out in installation process, one end of pad 14 can directly be placed in step 113, and abuts connection with it, and the other end as described above, abuts against with the sealing surface of sealing gasket 13.Therefore, sealing gasket 13 and pad 14 can be eliminated in installation process, need to carry out position by other instruments or mode by offering this limited step 113 revise, thus can the position of fixing seal pad 13 and pad 14 exactly, the sealing effect further for improving sealing gasket 13 provides guarantee.
By analysis, when controlling sealing gasket 13 trace movement, Compress Spring 12 sensitivity is high, and softness is good.Therefore, in this programme, elastic element can select Compress Spring 12.Further, the central diameter of this Compress Spring 12 is along the axis projection of piston 1 at the sealing surface of valve body primary valve 32, and that is, when making Compress Spring 12 press seal pad 13 act on valve body primary valve 32, its active force is in the sealing surface of valve body primary valve 32.The central diameter of Compress Spring 12 can be made equal with the central diameter of valve body primary valve 32, even if the active force of Compress Spring 12 can act on the sealing surface of valve body primary valve 32 completely, thus ensure that sealing gasket 13 is more tight with the laminating of valve body primary valve 32, effectively improve its sealing effect.
It should be noted that, in this programme, according to the designing requirement of supporting base 112, the supporting base 112 be socketed with above-mentioned Compress Spring 12 is cylindrical body, and namely its section shape is circular, and its principle and effect, referring to the specification of supporting base 112, do not repeat them here.
Fig. 5 is the structural representation of the piston of solenoid valve in the second embodiment, and for the clear difference showing this programme and the first embodiment contacts, in figure, identical components adopts same tag to refer to.As shown in the figure, elastic element can also select belleville spring 15, and adopt belleville spring 15 to have two benefits, first belleville spring 15 is thinner, and institute takes up space less, can be used in the occasion that sealing gasket 13 receiving cavity 111 is limited; Secondly, the elastic force of belleville spring 15 is comparatively large, can be used in the occasion that primary valve 32 impact force is larger.
Further, can offer pressure relief vent 115 at the side of supporting base 112, this pressure relief vent 115 is along the through piston only 11 of axial direction of piston 1.In the process that valve body primary valve 32 is constantly closed and opened, the medium of low-pressure cavity 31 is infiltrated in receiving cavity 111 by the space between sealing gasket 13 and receiving cavity 111 circumference.By the pressure relief vent 115 in this programme, effectively can enter the medium in space between sealing gasket 13 and piston only 11 by removal, eliminate because excessive medium accumulates the excess pressure caused, therefore, the effective working state of elastic element can be ensured, and then guarantee that the whole system of the program has reliable service behaviour.
Should be appreciated that the pressure relief vent 115 shown in figure is arranged along the axis of piston 1, in fact, this pressure relief vent 115 also can oblique setting and be not limited to shown in figure, as long as can meet basic pressure relief.
In addition, this piston only 11 also can have the first fixing boss seat 116 of fitting piston returning spring 6, and this first boss seat 116 is placed in the dorsal part of above-mentioned supporting base 112.Under the effect of piston revert spring 6, realize the action of piston 1, thus drive sealing gasket 13 abut with valve body primary valve 32 and be separated.Compared to existing technology, piston revert spring 6 is directly abutted with piston 1, this the first boss seat 116 is socketed with piston revert spring 6, more effectively fix the skew of limited piston returning spring 6, and then ensure that piston revert spring 6 acts on the power of piston 1 evenly, the motion in the axial direction of effective control piston 1.Therefore, so design, sealing gasket 13 and the accurate laminating of valve body primary valve 32 position can be guaranteed, improve its sealing effect.
Except above-mentioned piston 1, the utility model also provides a kind of solenoid valve with this piston 1, the valve seat 2 of this solenoid valve has the second fixing boss seat 26 of fitting piston returning spring 6, the shape of this second boss seat 26 and above-mentioned first boss seat 116 and act on identical.Other structures of this solenoid valve with reference to prior art, can repeat no more at this herein in addition.
Above piston provided by the utility model and solenoid valve are described in detail.Only set forth for object lesson of the present utility model herein, the explanation of above specific embodiment just understands method of the present utility model and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model feature, if can also make these improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. a solenoid valve, it is characterized in that, comprise the valve seat (2) being provided with valve pocket (29), described valve pocket (29) internal fixtion is provided with piston seat (28), the piston (1) coordinating slip is therein provided with in described piston seat (28), described piston (1) comprises piston only (11), be inlaid in the sealing gasket (13) of described piston only (11), limit the pad (14) of described sealing gasket (13) axial motion, described piston only (11) has the receiving cavity (111) that is held described sealing gasket (13), described receiving cavity arranges elastic element in (111), described elastic element offsets and is arranged between described piston only (111) and described sealing gasket (13).
2. solenoid valve according to claim 1, is characterized in that, the opening end of described receiving cavity (111) has limited step (113), and extends to form caulking part (114) from described step (113); After described pad (14) and described step (113) offset, described caulking part (114) bends towards described piston axis and compresses described pad (14).
3. solenoid valve according to claim 2, is characterized in that, the circumferential wall Spielpassung of described sealing gasket (13) and described receiving cavity (111).
4. solenoid valve according to claim 3, is characterized in that, described elastic element is Compress Spring (12).
5. solenoid valve according to claim 4, is characterized in that, the closed end of described receiving cavity (111) has limited support seat (112), and described elastic element and described supporting base (112) are socketed.
6. solenoid valve according to claim 5, is characterized in that, the central diameter of described Compress Spring (12) along the axis projection of described piston (1) at the sealing surface of primary valve.
7. solenoid valve according to claim 5, it is characterized in that, described piston only (111) has the first fixing boss seat (116) of fitting piston returning spring, and described first boss seat (116) is placed in the dorsal part of described supporting base (112); Described valve seat (2) has the second boss seat (26) coordinating described piston revert spring fixing.
8. solenoid valve according to claim 3, is characterized in that, described elastic element is belleville spring (15).
9. the solenoid valve according to any one of claim 1 to 8, is characterized in that, the side of described supporting base (112) offers the pressure relief vent (115) of axially through described piston only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516821.6U CN204042034U (en) | 2013-09-23 | 2014-09-10 | A kind of solenoid valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587756 | 2013-09-23 | ||
| CN201320587756.1 | 2013-09-23 | ||
| CN201420516821.6U CN204042034U (en) | 2013-09-23 | 2014-09-10 | A kind of solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042034U true CN204042034U (en) | 2014-12-24 |
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ID=52242702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420516821.6U Active CN204042034U (en) | 2013-09-23 | 2014-09-10 | A kind of solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439061A (en) * | 2015-08-11 | 2017-02-22 | 浙江三花制冷集团有限公司 | Piston component of solenoid valve, and piston and sealing plug of piston component |
-
2014
- 2014-09-10 CN CN201420516821.6U patent/CN204042034U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439061A (en) * | 2015-08-11 | 2017-02-22 | 浙江三花制冷集团有限公司 | Piston component of solenoid valve, and piston and sealing plug of piston component |
| CN106439061B (en) * | 2015-08-11 | 2019-08-27 | 浙江三花制冷集团有限公司 | Piston of electromagnetic valve component and its piston, sealing-plug |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170302 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220812 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |