CN-116241680-B - Electromagnetic valve

CN116241680BCN 116241680 BCN116241680 BCN 116241680BCN-116241680-B

Abstract

The invention discloses an electromagnetic valve which comprises a valve seat, a diaphragm, an electromagnet and a sealing medium, wherein the valve seat is provided with a water inlet, a valve cavity and a water outlet which are sequentially communicated, the diaphragm is arranged in the valve cavity, the electromagnet comprises an electromagnetic main body and a movable iron core, the electromagnetic main body is arranged on the valve seat, the electromagnetic main body is provided with a movable cavity which extends along a first direction, the movable cavity is communicated with the valve cavity, the movable iron core is accommodated in the movable cavity and is provided with a gap with the inner wall of the movable cavity, the movable iron core can move along the first direction, the sealing medium is filled in the movable cavity, and the sealing medium is mutually insoluble with liquid. The inside packing of activity chamber of electromagnetic main part has sealing medium, and at the in-process that the solenoid valve used, sealing medium can avoid the liquid that carries in the pipeline to get into the clearance between activity chamber and the movable iron core, and then avoids the foreign matter granule in the liquid to get into between activity chamber and the movable iron core to effectively reduce the possibility that movable iron core card was dead.

Inventors

LI JIANQUAN
ZHANG CHENG
LIU ZIGUANG

Assignees

箭牌家居集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230302

Claims (8)

1. The solenoid valve is applied to in the pipeline of carrying liquid, its characterized in that, the solenoid valve includes: The valve seat is provided with a water inlet, a valve cavity and a water outlet which are sequentially communicated; a diaphragm mounted in the valve chamber; The electromagnet comprises an electromagnetic main body and a movable iron core, the electromagnetic main body is arranged on the valve seat, the electromagnetic main body is provided with a movable cavity extending along a first direction, and the movable cavity is communicated with the valve cavity; the movable iron core is accommodated in the movable cavity and has a gap with the inner side wall of the movable cavity, and the movable iron core can move along the first direction, so that the diaphragm opens the valve cavity to be communicated with the water inlet and the water outlet, or closes the valve cavity to isolate the water inlet and the water outlet; the sealing medium is positioned in the movable cavity and fills the gap between the movable iron core and the inner side wall of the movable cavity, the sealing medium is not mutually dissolved with the liquid, the sealing medium is in a liquid state, and the sealing medium is also filled between the movable iron core and the bottom wall of the movable cavity.
2. The solenoid valve of claim 1 wherein said sealing medium is oil.
3. The electromagnetic valve according to claim 1, wherein the plunger has a through hole through which the sealing medium flows.
4. A solenoid valve according to claim 3 wherein said plunger further has a receiving cavity extending in said first direction, said through-hole extending from an inner wall of said receiving cavity to an outer surface of said plunger, an axis of said receiving cavity coinciding with an axis of said plunger, said through-hole being provided in plurality, a plurality of said through-holes being provided uniformly in a circumferential direction of said plunger.
5. A solenoid valve according to claim 3 wherein said plunger has a receiving cavity extending in said first direction, an axis of said receiving cavity coinciding with an axis of said plunger, said through hole extending in a second direction perpendicular to said first direction, an edge of said through hole being flush with a bottom wall of said receiving cavity in an axial section of said plunger.
6. A solenoid valve according to claim 3 wherein said through bore extends from an end of said plunger adjacent said bottom wall of said movable chamber to a side wall of said plunger.
7. The solenoid valve of claim 1 wherein the viscosity of said sealing medium is 1 to 10 times the viscosity of water.
8. The solenoid valve of claim 1 wherein said electromagnet is positioned above said valve seat and said sealing medium has a density less than said liquid; Or, the electromagnet is positioned below the valve seat, and the density of the sealing medium is greater than that of the liquid.

Description

Electromagnetic valve Technical Field The invention relates to the technical field of valve devices, in particular to an electromagnetic valve. Background The solenoid valve is a commonly used valve device, and the switching principle is that the coil of electromagnetic main part is on and can produce the magnetic field, and the magnetic field disappears, and the coil break-make electric energy through control electromagnetic main part can drive the movable iron core and follow valve inner chamber axial motion, realizes the switching of pressure release hole, and the solenoid valve can be applied to in the liquid, and when the pressure release hole was closed, the diaphragm can compress tightly the export under the hydraulic pressure effect, realizes closing the valve, and when the pressure release hole was opened, the water of diaphragm one side can lead away through the pressure release hole, produces short-time low pressure, and the hydraulic pressure of diaphragm opposite side pushes the diaphragm open, realizes opening the valve. But the solenoid valve works in liquid, probably exists impurity or takes place the incrustation scale to precipitate in the liquid and produce foreign matter granule, because the clearance between the inner chamber lateral wall of electromagnetic main part and the lateral wall of moving the iron core is less, when the inner chamber of liquid infiltration electromagnetic main part, the foreign matter granule easily blocks into the inner chamber wall of electromagnetic main part and moves between the iron core, leads to moving the iron core card to die. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the electromagnetic valve, the movable cavity of the electromagnetic main body is filled with the sealing medium, and in the use process of the electromagnetic valve, the sealing medium can prevent liquid conveyed in a pipeline from entering a gap between the movable cavity and the movable iron core, and further prevent foreign particles in the liquid from entering the gap between the movable cavity and the movable iron core, so that the possibility of blocking the movable iron core is effectively reduced. The electromagnetic valve comprises a valve seat, a diaphragm, an electromagnet, a sealing medium and a sealing medium, wherein the valve seat is provided with a water inlet, a valve cavity and a water outlet which are sequentially communicated, the diaphragm is arranged in the valve cavity, the electromagnet comprises an electromagnetic main body and a movable iron core, the electromagnetic main body is arranged on the valve seat, the electromagnetic main body is provided with a movable cavity which extends along a first direction, the movable cavity is communicated with the valve cavity, the movable iron core is accommodated in the movable cavity and is provided with a gap with the inner side wall of the movable cavity, the movable iron core can move along the first direction, so that the diaphragm can open the valve cavity to be communicated with the water inlet and the water outlet, or close the valve cavity to isolate the water inlet and the water outlet, and the sealing medium is positioned in the movable cavity and fills the gap between the movable iron core and the inner side wall of the movable cavity and is mutually insoluble with the liquid. The electromagnetic valve provided by the embodiment of the invention has the advantages that the movable cavity of the electromagnetic main body is filled with the sealing medium which is not compatible with the liquid, and the sealing medium can prevent the liquid conveyed in the pipeline from entering the gap between the movable cavity and the movable iron core in the use process of the electromagnetic valve, so that foreign particles in the liquid are prevented from entering the gap between the movable cavity and the movable iron core, and the possibility of blocking the movable iron core is effectively reduced. In some embodiments of the invention, the sealing medium is in a liquid form. In some embodiments of the invention, the sealing medium is oil. In some embodiments of the invention, the plunger has a through hole through which the sealing medium flows. In some embodiments of the present invention, the moving core further has a receiving cavity extending in the first direction, the through hole extends from an inner wall of the receiving cavity to an outer surface of the moving core, an axis of the receiving cavity coincides with an axis of the moving core, the through hole is provided in plurality, and the plurality of through holes are uniformly provided in a circumferential direction of the moving core. In some embodiments of the invention, the moving core has a receiving cavity extending in the first direction, an axis of the receiving cavity coincides with an axis of the moving core, the through hole extend