CN204729726U - A kind of pilot type diaphragm electromagnetic switch valve - Google Patents

A kind of pilot type diaphragm electromagnetic switch valve Download PDF

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Publication number
CN204729726U
CN204729726U CN201520278675.2U CN201520278675U CN204729726U CN 204729726 U CN204729726 U CN 204729726U CN 201520278675 U CN201520278675 U CN 201520278675U CN 204729726 U CN204729726 U CN 204729726U
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CN
China
Prior art keywords
core assembly
dynamic core
electromagnetic switch
plunger tube
main valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201520278675.2U
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Chinese (zh)
Inventor
李晓辉
杨曙东
杜广杰
全伟才
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HUST Wuxi Research Institute
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HUST Wuxi Research Institute
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Priority to CN201520278675.2U priority Critical patent/CN204729726U/en
Application granted granted Critical
Publication of CN204729726U publication Critical patent/CN204729726U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of pilot type diaphragm electromagnetic switch valve, it comprises valve body, main valve plug, dynamic core assembly, plunger tube, diaphragm and coil assembly, the two ends of described valve body are provided with liquid entering hole and liquid outlet, described main valve plug is arranged on described valve body by valve gap, the center of described main valve plug offers pilot hole, and described main valve plug is provided with for cut off into, the diaphragm of liquid outlet, described dynamic core assembly is arranged at the top of described main valve plug, described plunger tube is placed on outside described dynamic core assembly, described coil assembly is arranged at described plunger tube outward also with nut check, Returnning spring is provided with between described dynamic core assembly and described plunger tube, the bottom surface of described dynamic core assembly offers holding cavity, pilot hole black box is provided with in described holding cavity, described liquid entering hole place is provided with filter screen.Above-mentioned electromagnetic switch valve can impurity effectively in filter medium pipeline, has the advantages that structure is simple, easy to maintenance, reliability is high.

Description

A kind of pilot type diaphragm electromagnetic switch valve
Technical field
The utility model relates to a kind of electromagnetic switch valve, particularly relates to a kind of liquid-working-medium being applicable to impurity, can realize the pilot type diaphragm electromagnetic switch valve of pipeline break-make.
Background technique
Guide electromagnetic valve is a kind of relatively more conventional solenoid valve in hydraulic system.The on-off function of electromagnetic switch valve in pipeline mainly relies on the diaphragm on main valve plug to realize, and the sealing between diaphragm and valve directly affects the performance of whole valve.In actual conditions, the impurity in liquid medium very easily causes that stuck, the valve seal of main valve plug is tight or the damping hole of diaphragm blocks, and causes magnetic switch defective valve, thus affects the use of whole system.
Model utility content
The purpose of this utility model is to provide a kind of pilot type diaphragm electromagnetic switch valve, its feature having good airproof performance and be more suitable for impurity liquid medium, to solve the problems referred to above that in prior art, pilot type diaphragm electromagnetic switch valve exists.
For reaching this object, the utility model by the following technical solutions:
A kind of pilot type diaphragm electromagnetic switch valve, it comprises valve body, main valve plug, dynamic core assembly, plunger tube, diaphragm and coil assembly, the two ends of described valve body are provided with the liquid entering hole and liquid outlet that are connected, described main valve plug is arranged on described valve body by valve gap, the center of described main valve plug offers pilot hole, and described main valve plug is provided with for cut off into, the diaphragm of liquid outlet, described dynamic core assembly is arranged at the top of described main valve plug, described plunger tube is placed on outside described dynamic core assembly, described coil assembly is arranged at described plunger tube outward also with nut check, the Returnning spring for dynamic core assembly is provided with between described dynamic core assembly and described plunger tube, wherein, the position of the corresponding described pilot hole in bottom surface of described dynamic core assembly offers holding cavity, pilot hole black box is provided with in described holding cavity, described liquid entering hole place is provided with filter screen.
Especially, described pilot hole black box comprises and is arranged at Packing spring in described holding cavity and pilot hole sealing gasket from inside to outside.
Especially, seal ring is provided with between described valve body and described valve gap and between described valve gap and described plunger tube.
Especially, described filter screen is the long cone structure of one end open, and its opening end coordinates the internal diameter of liquid entering hole to arrange, and the opening end of described filter screen is arranged in liquid entering hole by back-up ring.
Especially, described filter screen is made up of stainless steel material.
The beneficial effects of the utility model are, the black box compared with prior art arranged between the dynamic core assembly bottom surface of described pilot type diaphragm electromagnetic switch valve and pilot hole, install filtrating equipment additional in described liquid entering hole simultaneously, valve is made not only to have more excellent sealing, and there is contamination resistance, require greatly to lower to the turbidity test of working medium, effectively improve reliability and the life-span of electromagnetic switch valve.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of the pilot type diaphragm electromagnetic switch valve that the utility model embodiment 1 provides;
Fig. 2 is the plan view of the pilot type diaphragm electromagnetic switch valve that the utility model embodiment 1 provides.
In figure:
1, valve body; 2, main valve plug; 3, dynamic core assembly; 4, plunger tube; 5, diaphragm; 6, coil assembly; 7, liquid entering hole; 8, liquid outlet; 9, valve gap; 10, pilot hole; 11, nut; 12, Returnning spring; 13, holding cavity; 14, Packing spring; 15, pilot hole sealing gasket; 16, filter screen; 17, back-up ring; 18, seal ring.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of pilot type diaphragm electromagnetic switch valve comprises valve body 1, main valve plug 2, dynamic core assembly 3, plunger tube 4, diaphragm 5 and coil assembly 6, the two ends of described valve body 1 are provided with the liquid entering hole 7 and liquid outlet 8 that are connected, described main valve plug 2 is arranged on described valve body 1 by valve gap 9, the corresponding fluid passage in center of described main valve plug 2 offers pilot hole 10, and the diaphragm 5 described main valve plug 2 is provided with for cutting off liquid entering hole 7 and liquid outlet 8, described dynamic core assembly 3 is arranged at the top of described main valve plug 2, described plunger tube 4 is placed on outside described dynamic core assembly 3, described coil assembly 6 is arranged at outside described plunger tube 4 and also locks with nut 11, the Returnning spring 12 for dynamic core assembly 3 is provided with between described dynamic core assembly 3 and described plunger tube 4, described dynamic core assembly 3 moves up and down along the endoporus of described plunger tube 4, the position of the corresponding described pilot hole 10 in bottom surface of described dynamic core assembly 3 offers holding cavity 13, Packing spring 14 and pilot hole sealing gasket 15 is disposed with from inside to outside in described holding cavity 13, to increase the sealing at poppet port place.
Described liquid entering hole 7 place is provided with filter screen 16, effectively can filter out the impurity in working medium.Described filter screen 16 is made up of stainless steel, and it is the long cone structure of one end open, and its opening end coordinates the internal diameter of liquid entering hole 7 to arrange, and the opening end of described filter screen 16 is arranged in liquid entering hole 7 by back-up ring 17.
Seal ring 18 is provided with between described valve body 1 and described valve gap 9 and between described valve gap 9 and described plunger tube 4.To increase the sealing of electromagnetic switch valve.
During work, pilot hole 10 on main valve plug 2 is opened by dynamic core assembly 3, valve body 1 upper cavity pressure is declined rapidly, pressure reduction is formed between main valve upper and lower cavity, the pressure difference of medium is relied on to promote diaphragm 5, main valve plug 2 move, valve open, now flowing medium enters valve body 1 after filter screen 16 impurity screening, is flowed out by outlet; When pilot hole 10 is closed by dynamic core assembly 3, flowing medium, rapidly from diaphragm 5 aperture 7, enters valve body 1 epicoele, makes valve body 1 upper and lower cavity pressure equal, dynamic core assembly 3 and main valve plug 2 under the effect of Returnning spring 12, throttle down.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model does not limit by above-mentioned example; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various change and change, and these changes and change all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (5)

1. a pilot type diaphragm electromagnetic switch valve, it comprises valve body, main valve plug, dynamic core assembly, plunger tube, diaphragm and coil assembly, the two ends of described valve body are provided with the liquid entering hole and liquid outlet that are connected, described main valve plug is arranged on described valve body by valve gap, the center of described main valve plug offers pilot hole, and described main valve plug is provided with for cut off into, the diaphragm of liquid outlet, described dynamic core assembly is arranged at the top of described main valve plug, described plunger tube is placed on outside described dynamic core assembly, described coil assembly is arranged at described plunger tube outward also with nut check, the Returnning spring for dynamic core assembly is provided with between described dynamic core assembly and described plunger tube, it is characterized in that, the position of the corresponding described pilot hole in bottom surface of described dynamic core assembly offers holding cavity, pilot hole black box is provided with in described holding cavity, described liquid entering hole place is provided with filter screen.
2. pilot type diaphragm electromagnetic switch valve according to claim 1, is characterized in that, described pilot hole black box comprises and is arranged at Packing spring in described holding cavity and pilot hole sealing gasket from inside to outside.
3. pilot type diaphragm electromagnetic switch valve according to claim 1 and 2, is characterized in that, is provided with seal ring between described valve body and described valve gap and between described valve gap and described plunger tube.
4. pilot type diaphragm electromagnetic switch valve according to claim 1, is characterized in that, described filter screen is the long cone structure of one end open, and its opening end coordinates the internal diameter of liquid entering hole to arrange, and the opening end of described filter screen is arranged in liquid entering hole by back-up ring.
5. the pilot type diaphragm electromagnetic switch valve according to claim 1 or 4, is characterized in that, described filter screen is made up of stainless steel material.
CN201520278675.2U 2015-04-30 2015-04-30 A kind of pilot type diaphragm electromagnetic switch valve Withdrawn - After Issue CN204729726U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520278675.2U CN204729726U (en) 2015-04-30 2015-04-30 A kind of pilot type diaphragm electromagnetic switch valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520278675.2U CN204729726U (en) 2015-04-30 2015-04-30 A kind of pilot type diaphragm electromagnetic switch valve

Publications (1)

Publication Number Publication Date
CN204729726U true CN204729726U (en) 2015-10-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520278675.2U Withdrawn - After Issue CN204729726U (en) 2015-04-30 2015-04-30 A kind of pilot type diaphragm electromagnetic switch valve

Country Status (1)

Country Link
CN (1) CN204729726U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819334A (en) * 2015-04-30 2015-08-05 华中科技大学无锡研究院 Pilot type membrane electromagnetic switch valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819334A (en) * 2015-04-30 2015-08-05 华中科技大学无锡研究院 Pilot type membrane electromagnetic switch valve
CN104819334B (en) * 2015-04-30 2018-01-05 华中科技大学无锡研究院 A kind of pilot type diaphragm electromagnetic switch valve

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20151028

Effective date of abandoning: 20180105

AV01 Patent right actively abandoned