Pilot type active belt position monitoring safety valve

An active and pilot-operated technology, applied in safety valves, fluid pressure actuators, balance valves, etc., can solve problems such as poor safety valve action stability, complex system loop requirements, safety production accidents, etc., to ensure stability, The effect of stable and reliable switching action and good temperature compensation performance
CN103644336AActive Publication Date: 2014-03-19TAIZHONG GRP YUCI HYDRAULIC IND
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TAIZHONG GRP YUCI HYDRAULIC IND
Publication Date
2014-03-19

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Abstract

The invention relates to a valve, and in particular relates to a pilot type active belt position monitoring safety valve. The pilot type active belt position monitoring safety valve comprises an electromagnetic directional valve (21), a main valve (20) and a check valve, wherein the main valve (20) comprises a valve sleeve (2) with a stepped hollow inner part, an outlet A is formed in the right end of the valve sleeve (2), a port B communicated with an oil inlet is formed in the circumference of the right end of the valve sleeve (2), and a lantern ring (4) is installed in the left end of the valve sleeve (2); a valve core (3) with a boss in the middle is installed in the valve sleeve (2), linear sealing is formed between the outer conical surface of the right end of the valve core (3) and an inner conical hole in the right end of the valve sleeve (2) to separate a port A from the port B, the right end of the valve core (3) extends into the lantern ring (4) in a matching way, the boss in the middle of the valve core (3) is matched with the inner wall of a large hole in the left end of the valve sleeve (2), and the cylindrical surface on the right side of the boss of the valve core (3) is matched with the inner hole in the middle of the valve sleeve (2) is a sealing way. The pilot type active belt position monitoring safety valve is reasonable to design and simple in structure.
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Description

technical field

[0001] The invention relates to a valve, in particular to a pilot active safety valve with position monitoring. Background technique

[0002] On the injection molding machine, the existing safety valve has poor operation stability and complex system circuit requirements, which easily lead to safety production accidents. Therefore, it is necessary to develop a new type of safety valve. Contents of the invention

[0003] The purpose of the present invention is to provide a novel pilot-operated active safety valve with position monitoring.

[0004] The present invention is realized by adopting the following technical solutions:

[0005] A pilot-operated active safety valve with position monitoring, including an electromagnetic reversing valve, a main valve and a check valve.

[0006] The main valve includes a step-shaped hollow valve sleeve inside, the outlet on the right end of the valve sleeve is port A, and the circumference of the right end of the valve ...

Claims

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