一种两位三通电磁阀

Abstract

本实用新型涉及电磁阀技术领域，公开了一种两位三通电磁阀，包括上阀体、下阀体和阀芯，所述上阀体和下阀体之间分别设有上定位槽和下定位槽，所述上定位槽和下定位槽之间设有隔板，所述下阀体上设有活塞槽，所述活塞槽与隔板之间形成活塞腔，所述阀芯的活塞部与活塞腔垂直滑动配合，所述活塞部与下阀体之间设有弹簧，所述活塞部上设有活塞密封圈槽，所述活塞密封圈槽内设有活塞密封圈；本实用新型提供的一种两位三通电磁阀，解决了现有技术中阀杆密封圈安装难度大、阀体组装效率低以及阀体密封效果不好的问题。

Claims

1. A two-position three-way solenoid valve characterized by: The valve includes an upper valve body, a lower valve body, and a valve core. An upper positioning groove and a lower positioning groove are respectively provided between the upper valve body and the lower valve body. A partition is provided between the upper positioning groove and the lower positioning groove. A piston groove is provided on the lower valve body. A piston cavity is formed between the piston groove and the partition. The piston part of the valve core slides vertically with the piston cavity. A spring is provided between the piston part and the lower valve body. A piston sealing ring groove is provided on the piston part. A piston sealing ring is provided in the piston sealing ring groove. The upper outer periphery of the partition is provided with an upper annular step, and the lower outer periphery of the partition is provided with a lower annular step. An upper sealing ring is provided between the upper annular step and the upper positioning groove, and a lower sealing ring is provided between the lower annular step and the lower positioning groove. The valve stem portion of the valve core is vertically slidingly engaged with the partition. The partition is provided with a valve stem sealing groove, and a valve stem sealing ring is provided in the valve stem sealing groove.

2. A two-position three-way solenoid valve according to claim 1, characterized in that: An air intake sealing body is detachably fixedly installed at the upper end of the valve stem. The air intake sealing body is provided with an annular air intake sealing groove. An air intake sealing gasket is provided in the annular air intake sealing groove. An upper annular protrusion extending downward is provided in the air intake cavity of the upper valve body. When the valve core moves upward, the air intake sealing gasket and the upper annular protrusion abut against each other to seal, thereby sealing the upper end of the airflow channel located inside the valve core.

3. A two-position, three-way solenoid valve according to claim 2, characterized in that: The intake sealing body is threaded to the upper end of the valve core, the valve stem is provided with a first sealing step, the lower end of the intake sealing body is provided with a second sealing step, and an intake sealing body sealing ring is provided between the first sealing step and the second sealing step.

4. A two-position three-way solenoid valve according to claim 2, characterized in that: The end of the upper annular protrusion is provided with an upper annular inclined surface.

5. A two-position three-way solenoid valve according to claim 1, characterized in that: The lower end of the piston is provided with an annular vent sealing groove, and a vent sealing gasket is provided in the annular vent sealing groove. The lower valve body is provided with an upwardly extending lower annular protrusion. The valve core moves down, and the vent sealing gasket abuts against the lower annular protrusion to seal.

6. A two-position three-way solenoid valve according to claim 5, characterized in that: The lower annular protrusion has a lower annular inclined surface at its end.

7. A two-position three-way solenoid valve according to claim 5, characterized in that: The lower valve body is provided with a lower spring groove, which is coaxially arranged on the outside of the lower annular protrusion. The lower end of the piston part is provided with an upper spring groove, which is coaxially arranged on the outside of the annular air outlet sealing groove. The spring is arranged in the upper spring groove and the lower spring groove.

8. A two-position three-way solenoid valve according to claim 1, characterized in that: The upper valve body is connected to the pilot solenoid head via the pilot solenoid head mounting position. The upper valve body is provided with a first pilot channel and a second pilot channel. The two ends of the first pilot channel are respectively connected to the air source interface and the pilot solenoid head mounting position, and the two ends of the second pilot channel are respectively connected to the pilot solenoid head mounting position and the piston chamber.

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