Direct acting solenoid check valve

Abstract

The invention discloses a direct-acting electromagnetic one-way valve, which belongs to the one-way valve, and its structure includes an electromagnet coil, an electromagnet middle sleeve, an electromagnet push rod, a valve body, a transition push rod, a valve core, a valve sleeve and an end plug. A valve sleeve gland is arranged between the end plug and the valve sleeve, a valve core is arranged in the valve sleeve, a return spring is arranged in the cavity between the valve core and the valve sleeve gland, and an upper oil port and a lower oil port are arranged on the valve body. Oil port, the spool is provided with a damping hole, the first oil passage, and the second oil passage, and the damping hole is connected to the inner cavity on the left side of the spool, the inner cavity of the valve sleeve on the right side of the spool, the lower oil port and the inside of the middle sleeve of the electromagnet , the first oil passage communicates with the inner cavity of the valve core, and is blocked by a steel ball from the second oil passage, and the second oil passage communicates with the upper oil port. The right ends of the cores are connected, and the right side of the transition push rod is provided with an electromagnet push rod. The invention has the characteristics of simple processing, no leakage in the reverse direction, reduced cost, fast response speed of the valve core, no pressure loss in the reverse flow, and the like.

Description

technical field [0001] The invention relates to a one-way valve, in particular to a direct-acting electromagnetic one-way valve. Background technique [0002] At present, the commonly used electromagnetic one-way valve in the hydraulic industry is generally a pilot-operated structure. The pilot valve is a miniature one-way valve operated by a pull-type electromagnet. The hole diameter of the seat is extremely small, the shape and position tolerance requirements are very high, and special equipment is required for processing, so the processing cost is high, the anti-pollution ability is poor, and the valve core has a long response time. When flowing, it is necessary to overcome the return spring force of the valve core first, so there is a certain pressure loss when the oil flows in the reverse direction. Contents of the invention [0003] The technical task of the present invention is to provide a direct-acting electromagnetic one-way valve for the deficiencies in the abo...

AI Technical Summary

Problems solved by technology

[0002] At present, the electromagnetic check valve commonly used in the hydraulic industry is generally a pilot-operated structure. The pilot valve is a miniature check valve operated by a pull-type electromagnet. In this miniature check valve, the valve that is sealed with the cone surface of the cone valve The hole diameter of the seat is extremely small, the shape and position tolerance requirements are very high, and special equipment is required for processing, so the processing cost is high, the anti-pollution ability is poor, and the valve core has a long response time. When flowing, it is necessary to overcome the spring force of the spool return first, so there is a certain pressure loss when the oil flows in the opposite direction.

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