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Solenoid-operated pilot type spool valve

A pilot type, pilot valve technology, applied in valve details, multi-port valves, valve devices, etc., can solve the problems of complicated design and processing, complex internal structure of the valve body, etc., to achieve simple internal structure, easy design and processing, and easy distribution. Effect

Active Publication Date: 2015-08-12
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, in the aforementioned conventional spool valve, it is necessary to provide a plurality of ports for input, output, and exhaust, recesses and holes for mounting various components, or holes for mounting to the manifold base. The pilot passage is further formed inside the valve body with a plurality of mounting holes. As a result, the internal structure of the valve body becomes complicated, and the design and processing are complicated.

Method used

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  • Solenoid-operated pilot type spool valve
  • Solenoid-operated pilot type spool valve
  • Solenoid-operated pilot type spool valve

Examples

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Effect test

Embodiment Construction

[0028] Figure 1-Figure 3 It is a figure which shows 1st Embodiment of the electromagnetic pilot type spool valve of this invention. The spool valve 1A according to the first embodiment is a single-pilot type spool valve having one pilot valve 4 , and includes a main valve portion 2 having a valve structure as a five-port valve, and one end side of the main valve portion 2 provided on the main valve portion 2 . of the pilot valve section 3.

[0029] Five ports P, A1, A2, R1, and R2 for input, output, and exhaust are formed in the valve body 10 of the main valve portion 2 described above. The arrangement of the five ports is such that the first and second output ports A1 and A2 are located on both sides of the central input port P, and the first and second exhaust ports R1 and R2 It is located on both outer sides of the first and second output ports A1 and A2. In addition, in the inside of the valve body 10, a circular valve hole 11 communicating with the five ports P, A1, A...

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Abstract

A pilot passage that is in communication with an input port at all times is formed inside a spool, the pilot passage and a second pressure receiving chamber on one side of a pilot piston are made to be in communication with each other at all times through a constantly open communication passage formed in a continuous portion between the spool and the pilot piston, the second pressure receiving chamber and a first pressure receiving chamber on the other side of the pilot piston are made to be in communication with each other through an opening / closing communication passage that is formed in a piston box and that is opened and closed with a pilot valve, and the pilot piston is driven and the spool is switched by turning the pilot valve on and off to supply / discharge pilot air to / from the first pressure receiving chamber.

Description

technical field [0001] The present invention relates to a solenoid-operated spool valve in which a spool is switched by a solenoid-operated pilot valve. Background technique [0002] A solenoid-operated spool valve that switches a spool by a solenoid-operated pilot valve is a known member, as disclosed in Patent Document 1, for example. Such spool valves include dual pilot spool valves with 2 pilot valves and single pilot spool valves with 1 pilot valve. [0003] Among them, the double-pilot type spool valve is a spool valve in which the two pilot valves are alternately turned on and off, and the pilot air is alternately acted on the pilot pistons provided at both ends of the spool. , the spool is reciprocated to switch the flow paths between the plurality of ports. [0004] On the other hand, the aforementioned single-pilot type spool valve is a spool valve in which pilot pistons having different diameters are arranged at one end and the other end of the spool, and the pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/42F16K11/04
CPCF16K11/065F16K11/04F16K31/423F16K11/07F16K11/0716Y10T137/86879Y10T137/7767Y10T137/86614F16K31/1223F15B13/0402
Inventor 宫添真司诸富洋一
Owner SMC CORP
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