CN101818818A - Valve core component of pilot valve and stepped direct-acting electromagnetic valve - Google Patents
Valve core component of pilot valve and stepped direct-acting electromagnetic valve Download PDFInfo
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- CN101818818A CN101818818A CN 201010171410 CN201010171410A CN101818818A CN 101818818 A CN101818818 A CN 101818818A CN 201010171410 CN201010171410 CN 201010171410 CN 201010171410 A CN201010171410 A CN 201010171410A CN 101818818 A CN101818818 A CN 101818818A
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- valve
- spool
- sealing
- pilot valve
- core assembly
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- 239000008358 core component Substances 0.000 title abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 91
- 238000013016 damping Methods 0.000 claims abstract description 16
- 230000000994 depressogenic effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The invention provides a valve core component of a pilot valve, which is arranged in the inner hole of a valve body; the valve body is provided with a main flow valve port; the valve core component of the pilot valve comprises the valve core of the pilot valve and a sealing element; the valve core is provided with a damping hole; and the sealing element is arranged between the valve body and the valve core and is provided with a sealing plane for sealing the main flow valve port. According to another aspect of the invention, the invention also provides a stepped direct-acting electromagnetic valve which comprises the valve core component of the pilot valve. The invention improves the sealing effect of the electromagnetic valve, has low processing requirements, low cost and reasonable structure, improves the installing efficiency, reduces the rejection rate of the electromagnetic valve, improves the quality, and stabilizes the performance.
Description
Technical field
The present invention relates to the solenoid valve field, more specifically, relate to a kind of mangetic core assembly and step direct-acting type electromagnetic valve of pilot valve.
Background technique
As shown in Figure 1, the spool 1 of pilot valve cooperates with major flow valve port 21 and moving iron core 35 assemblies respectively as the core component of step direct-acting type electromagnetic valve, and the internal leakage, the maximum that directly influence valve body 2 are opened solenoid valve Key Performance Indicators such as valve pressure reduction.As shown in Figure 3, the spool 1 of pilot valve mainly comprises: little valve port 11, spool slide guide section 12, damping hole 13, cylndrical surface 14, sealing cone 15.As shown in Figure 2, valve body 2 mainly comprises: major flow valve port 21, valve body slide guide section 25, wherein, major flow valve port 21 comprises end face 211, the sealing inner conical surface 213 of major flow valve port.The spool 1 of pilot valve and the sealing of valve body 2 are that the sealing cone 15 by the spool of pilot valve is pressed on the sealing inner conical surface 213 of valve body and realizes, are the line contact between two conical seal (contact) faces, promptly seal by the intersection line between face and the face.
Be subjected to the influence of present technology, manufacturing mechanism, during valve body fine finishing, the concentricity of the concentricity of main flow port 21, valve body slide guide section 25, the valve core sealed cover of pilot valve, spool slide guide section, difficult control such as roughness, the spool 1 of pilot valve is relatively poor with the sealing effect of valve body 2, thereby cause solenoid valve internal leakage, open defectives such as valve performance difference, finally cause scrappage height, poor quality, the unstable properties of solenoid valve.
Summary of the invention
The present invention aim to provide a kind of low to processing request, improve installation efficiency, reduce cost, the mangetic core assembly of pilot valve rational in infrastructure, to solve the problems referred to above of prior art.
According to an aspect of the present invention, provide a kind of mangetic core assembly of pilot valve, it is arranged in the endoporus of valve body, and valve body has the major flow valve port, and the mangetic core assembly of pilot valve comprises the spool and the Sealing of pilot valve; Spool has damping hole; Sealing is arranged between valve body and the spool and Sealing has the sealing plane that seals the major flow valve port.
Further, Sealing has the sealing plane of the end face of sealing major flow valve port.
Further, Sealing adopts resinae or rubber-like flexible material to make.
Further, the top of spool has the spool slide guide section of being convenient to be installed in the endoporus, and spool is provided with the annular groove that is positioned at spool slide guide section below, and Sealing has the annular lug that matches with annular groove.
Further, the bottom of spool also is provided with the locating flange of supporting sealing member bottom surface.
Further, spool also is provided with the depressed part of the damping hole of the endoporus that is communicated with valve body and spool.
Further, depressed part is a groove.
Further, depressed part is the hole.
Further, the axis normal of the axis in hole and spool.
According to another aspect of the present invention, also provide a kind of step direct-acting type electromagnetic valve, it comprises the mangetic core assembly of foregoing pilot valve.
Because the present invention adopts the Sealing between the spool (abbreviation spool) be arranged on valve body and pilot valve, Sealing has certain elasticity as independent parts, its no longer with the spool formula structure that becomes one, no longer with spool itself as Sealing.It requires very low to the coaxality of valve body and valve core chamber, thus can overcome because each several part concentricity in the valve body, reasons such as roughness, valve body and spool fiting effect are bad and sealing effect generation is poor, the solenoid valve internal leakage, open defective such as valve performance difference.
Secondly, Sealing has certain elasticity, so the stuck phenomenon of Sealing can never occur.And Sealing has the sealing plane of sealing major flow valve port, has increased sealing area, has strengthened sealing effect, and internal leakage is almost nil.
For the main flow port diameter that guarantees valve body does not reduce, simultaneously spool slide guide section external diameter does not increase, and can vacate free air space to damping hole, and the present invention has designed depressed part and damping hole connects at spool slide guide pars infrasegmentalis.This structure has made full use of narrow space under the situation that does not increase body size, make the valve core structure of pilot valve compact more, reasonable.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the assembly structure of the step direct-acting type electromagnetic valve of prior art;
Fig. 2 has schematically shown the structure of valve body of the step direct-acting type electromagnetic valve of prior art;
Fig. 3 has schematically shown the structure of spool of pilot valve of the step direct-acting type electromagnetic valve of prior art;
Fig. 4 is according to the assembly structure of the step direct-acting type electromagnetic valve of the embodiment of the invention;
Fig. 5 has schematically shown according to the spool of the pilot valve of the embodiment of the invention and the assembly structure of Sealing;
Fig. 6 a has schematically shown first kind of structure according to the spool of the pilot valve of the embodiment of the invention;
Fig. 6 b has schematically shown second kind of structure according to the spool of the pilot valve of the embodiment of the invention;
Fig. 6 c has schematically shown the third structure according to the spool of the pilot valve of the embodiment of the invention; And
Fig. 7 has schematically shown the structure according to the Sealing of the embodiment of the invention.
Label declaration: the end face 211 of spool 1, valve body 2, electromagnetic coil 3, Sealing 4, little valve port 11, spool slide guide section 12, damping hole 13, cylndrical surface 14, sealing cone 15, locating flange 16, depressed part 17, wall body 18, annular groove 19, major flow valve port 21, major flow valve port, sealing inner conical surface 213, valve body slide guide section 25, suction port 27, suction port place spring 29, static iron core 31, iron core spring 33, moving iron core 35, annular lug 41, interior matching hole 43, sealing plane 45
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
As shown in Figure 4, the mangetic core assembly according to a kind of pilot valve of the embodiment of the invention is arranged in the endoporus 23 of valve body 2, and valve body 2 has major flow valve port 21, and the mangetic core assembly of pilot valve comprises the spool 1 and Sealing 4 of pilot valve; As shown in Figure 5, spool 1 has damping hole 13.
The spool of the present invention and the existing spool main distinction structurally have: spool 1 is provided with Sealing 4.Sealing 4 is arranged between valve body 2 and the spool 1, and for example, spool 1 is provided with the structure of holding Sealing 4, perhaps is provided with the structure that is connected with Sealing 4, and perhaps Sealing 4 adopts other modes to be arranged between valve body 2 and the spool 1.
Below the concrete structure of Sealing 4, have more descriptions.
In addition, the spool of the present invention and the existing spool main distinction structurally also have: the bottom of spool 1 is unlike the taper of as shown in Figure 3 existing spool 1, the bottom of spool 1 can be straight tubular (shown in Fig. 6 a), the bottom of spool 1 can also be tubaeform (as shown in Figure 4), so that to Sealing 4 location, certainly, the bottom of straight-cylindrical spool 1 can become tubaeform by reaming.
Because the present invention adopts the Sealing 4 between the spool (abbreviation spool) be arranged on valve body and pilot valve, Sealing 4 has certain elasticity as independent parts, its no longer with the spool formula structure that becomes one, no longer with spool itself as Sealing.This sealing means requires very low to the coaxality of valve body and spool, so can overcome because the interior each several part concentricity of valve body, reasons such as roughness, valve body and spool fiting effect are bad and sealing effect that produce is poor, the solenoid valve internal leakage, open defective such as valve performance difference.In addition, Sealing 4 is installed as independent parts, can reduce the production time of solenoid valve, reduces cost.
Further, shown in Fig. 6 a, the top of spool 1 has the spool slide guide section of being convenient to be installed in the endoporus 23 12, and spool 1 is provided with the annular groove 19 that is positioned at spool slide guide section 12 belows, as shown in Figure 7, Sealing 4 has the annular lug 41 that matches with annular groove 19.By this set, make Sealing 4 compact with cooperating of spool 1, stable.The Sealing 4 of this moment be a seal ring, and its bottom surface is a sealing plane 45, can seal the end face 211 of major flow valve port 21, and like this, sealing surface is the plane, and the area of contact of the linear sealing that forms during more in the past cone seal is wanted greatly, good sealing effect.Sealing 4 adopts flexible materials such as resinae or rubber, and for example teflon and/or nylon and/or rubber elastomeric material are made, and like this, can strengthen sealing effect, make and can not produce the gap between spool 1 and the valve body 2, and internal leakage is almost nil.And Sealing has certain elasticity, so the stuck phenomenon of Sealing can never occur, defectives such as valve performance difference can not occur holding.Certainly, spool 1 can not be provided with annular groove 19, and Sealing 4 can directly be enclosed within on the spool 1, also can realize sealing, does not only have the fit system of front stable.
Further, as shown in Figure 4, the bottom of spool 1 also is provided with the locating flange 16 of supporting sealing member 4 bottom surfaces.Locating flange 16 can be annular, and it is tubaeform that the bottom of spool 1 is formed, to form support slot.Locating flange 16 also can also can play similar effect for part annular or a bit of chimb, and like this, both supporting sealing member 4, can position Sealing 4 again, prevented that Sealing 4 from coming off from spool 1, guaranteed the stability of sealing.Certainly, the bottom of spool 1 can also be straight tubular (shown in Fig. 6 a), and reaming can be carried out to the wall body 18 of spool 1 by reaming in the bottom of straight-cylindrical spool 1, and it is tubaeform that the bottom of spool 1 is become, to realize the effect of above-mentioned location and support.
Further, shown in Fig. 6 a, 6b, 6c, spool 1 also is provided with the endoporus 23 of connection valve body and the depressed part 17 of the damping hole 13 of spool.Depressed part 17 is arranged on the bottom of damping hole 13, communicates with the outer surface of spool 1.For the main flow port diameter that guarantees valve body does not reduce, simultaneously spool slide guide section external diameter does not increase, and can vacate free air space to damping hole, and the present invention has designed depressed part 17 and damping hole 13 connects at spool slide guide pars infrasegmentalis.This structure has made full use of narrow space under the situation that does not increase body size, make the valve core structure of pilot valve compact more, reasonable.Shown in Fig. 6 a, depressed part 17 is a groove, for example is the circular groove around spool 1, and like this, the structure of spool 1 is symmetry substantially, helps the work of spool 1.Depressed part 17 can not be a circular groove also, for example is the recess shown in Fig. 6 b, and like this, shorten process time.As for the shape of groove or recess, various suitable forms can adopt.
Further, shown in Fig. 6 c, depressed part 17 is the hole, for example is blind hole, and it can be various angles with the axis of spool 1.The hole processes more convenient.Further, the axis normal of the axis in hole and spool 1, depressed part 17 is the cross-drilled hole that intersects vertically with damping hole 1, like this, the shared volume of depressed part 17 is less, to the each side of spool 1, and intensity etc. for example, influence lessly, and add the man-hour perforating apparatus and locate easily, process more convenient.
As shown in Figure 4, according to an aspect of the present invention, also provide a kind of step direct-acting type electromagnetic valve, it comprises the mangetic core assembly of foregoing pilot valve, and valve body 2 is connected with electromagnetic coil 3.This step direct-acting type electromagnetic valve has the advantage of the mangetic core assembly of foregoing pilot valve, reduces scrappage, raising quality, the stable performance of solenoid valve.Certainly, the mangetic core assembly of pilot valve of the present invention not only can be used for step direct-acting type electromagnetic valve, can also be used for the solenoid valve of other correlation types, and the solenoid valve of these types also can have the mangetic core assembly of foregoing pilot valve.
During solenoid valve work: electromagnetic coil 3 energisings, the moving iron core 35 of static iron core 31 adhesives of solenoid valve inside up moves, little valve port 11 is opened, the pressure on spool top shed by 11 moments of little valve port, and the pressure of spool bottom or high pressure, by spool pressure difference up and down, spool 1 is lifted, main flow port 21 is opened.
During closed electromagnetic valve: electromagnetic coil 3 outages, moving iron core 35 breaks away from static iron core 31 and moves down, little valve port 11 is closed, the high-pressure medium of spool bottom passes through damping hole 13 again by depressed part 17, enters spool top, make the upper and lower pressure balance of spool, under the effect of gravity, suction port place spring 29, iron core spring 33 elastic force, spool 1 moves down, and main flow port 21 is closed.
From above description, as can be seen, the above embodiments of the present invention have realized following technique effect: the present invention improves the sealing effect of solenoid valve, low to processing request, improved installation efficiency, cost is low, rational in infrastructure, reduced solenoid valve scrappage, improved quality, stability performance.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the mangetic core assembly of a pilot valve is arranged in the endoporus (23) of valve body (2), and described valve body (2) has major flow valve port (21), it is characterized in that,
The mangetic core assembly of described pilot valve comprises the spool (1) and Sealing (4) of pilot valve;
Described spool (1) has damping hole (13);
Described Sealing (4) is arranged between described valve body (2) and the described spool (1) and described Sealing (4) has the sealing plane (45) that seals described major flow valve port (21).
2. the mangetic core assembly of pilot valve according to claim 1 is characterized in that, described Sealing (4) has the sealing plane of the end face (211) of the described major flow valve port of sealing (21).
3. the mangetic core assembly of pilot valve according to claim 2 is characterized in that, described Sealing (4) adopts resinae or rubber-like flexible material to make.
4. the mangetic core assembly of pilot valve according to claim 3, it is characterized in that, the top of described spool (1) has the spool slide guide section of being convenient to be installed in the described endoporus (23) (12), described spool (1) is provided with the annular groove (19) that is positioned at described spool slide guide section (12) below, and described Sealing (4) has the annular lug (41) that matches with described annular groove (19).
5. the mangetic core assembly of pilot valve according to claim 4 is characterized in that, the bottom of described spool (1) also is provided with the locating flange (16) that supports described Sealing (4) bottom surface.
6. the mangetic core assembly of pilot valve according to claim 4 is characterized in that, described spool (1) also is provided with the endoporus (23) of the described valve body of connection and the depressed part (17) of the damping hole (13) of described spool.
7. the mangetic core assembly of pilot valve according to claim 6 is characterized in that, described depressed part (17) is a groove.
8. the mangetic core assembly of pilot valve according to claim 6 is characterized in that, described depressed part (17) is the hole.
9. the mangetic core assembly of pilot valve according to claim 8 is characterized in that, the axis normal of the axis in described hole and described spool (1).
10. a step direct-acting type electromagnetic valve is characterized in that, comprises the mangetic core assembly according to each described pilot valve in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171410 CN101818818A (en) | 2010-04-26 | 2010-04-26 | Valve core component of pilot valve and stepped direct-acting electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171410 CN101818818A (en) | 2010-04-26 | 2010-04-26 | Valve core component of pilot valve and stepped direct-acting electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN101818818A true CN101818818A (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010171410 Pending CN101818818A (en) | 2010-04-26 | 2010-04-26 | Valve core component of pilot valve and stepped direct-acting electromagnetic valve |
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| CN (1) | CN101818818A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465388A (en) * | 2014-09-10 | 2016-04-06 | 浙江三花股份有限公司 | Valve body structure and electronic expansion valve |
| CN105526368A (en) * | 2016-03-01 | 2016-04-27 | 王德民 | Piston type valve element and pilot valve with same |
| CN112066013A (en) * | 2020-08-27 | 2020-12-11 | 杨新超 | Self-buffering shockproof valve |
| WO2023143180A1 (en) * | 2022-01-27 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Stop valve and refrigeration system having same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927368U (en) * | 1982-08-14 | 1984-02-20 | 末永 博敏 | fluid sealing device |
| JPH06168819A (en) * | 1992-11-30 | 1994-06-14 | Toto Ltd | Solenoid |
| CN2177138Y (en) * | 1993-10-05 | 1994-09-14 | 天津大学 | Guide stop valve |
| JP2001235051A (en) * | 2000-02-23 | 2001-08-31 | Techno Excel Co Ltd | Electromagnetic feed water valve |
| DE202005013233U1 (en) * | 2005-08-22 | 2005-10-27 | Bürkert Werke GmbH & Co. KG | Magnetic valve system for fluid engineering application, has expanding end which holds pilot valve operated by mobile core, in one system operation, where body is fastened to piston of pilot valve |
| CN101122343A (en) * | 2006-08-07 | 2008-02-13 | 株式会社不二工机 | Pilot type control valve |
| JP2008064254A (en) * | 2006-09-08 | 2008-03-21 | Inax Corp | Pilot type flow control valve |
| CN201202859Y (en) * | 2008-05-08 | 2009-03-04 | 王元清 | Main valve seal structure of high pressure leading safety valve |
-
2010
- 2010-04-26 CN CN 201010171410 patent/CN101818818A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927368U (en) * | 1982-08-14 | 1984-02-20 | 末永 博敏 | fluid sealing device |
| JPH06168819A (en) * | 1992-11-30 | 1994-06-14 | Toto Ltd | Solenoid |
| CN2177138Y (en) * | 1993-10-05 | 1994-09-14 | 天津大学 | Guide stop valve |
| JP2001235051A (en) * | 2000-02-23 | 2001-08-31 | Techno Excel Co Ltd | Electromagnetic feed water valve |
| DE202005013233U1 (en) * | 2005-08-22 | 2005-10-27 | Bürkert Werke GmbH & Co. KG | Magnetic valve system for fluid engineering application, has expanding end which holds pilot valve operated by mobile core, in one system operation, where body is fastened to piston of pilot valve |
| CN101122343A (en) * | 2006-08-07 | 2008-02-13 | 株式会社不二工机 | Pilot type control valve |
| JP2008064254A (en) * | 2006-09-08 | 2008-03-21 | Inax Corp | Pilot type flow control valve |
| CN201202859Y (en) * | 2008-05-08 | 2009-03-04 | 王元清 | Main valve seal structure of high pressure leading safety valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465388A (en) * | 2014-09-10 | 2016-04-06 | 浙江三花股份有限公司 | Valve body structure and electronic expansion valve |
| CN105465388B (en) * | 2014-09-10 | 2020-06-02 | 浙江三花智能控制股份有限公司 | Body structure and electronic expansion valve |
| CN105526368A (en) * | 2016-03-01 | 2016-04-27 | 王德民 | Piston type valve element and pilot valve with same |
| CN112066013A (en) * | 2020-08-27 | 2020-12-11 | 杨新超 | Self-buffering shockproof valve |
| CN112066013B (en) * | 2020-08-27 | 2022-08-26 | 山东齐芯智控科技有限公司 | Self-buffering shockproof valve |
| WO2023143180A1 (en) * | 2022-01-27 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Stop valve and refrigeration system having same |
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Application publication date: 20100901 |