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Pilot valve structure

A pilot valve and pilot technology, applied in valve details, multi-port valves, valve devices, etc., can solve the problems of difficulty in reducing the size of switching valves and three-position switching valves, and achieve the effect of reducing size.

Pending Publication Date: 2020-07-17
WEISHIXI (ZHEJIANG) FLUID TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned three-position switching valves all have a defect that the piston and return spring arranged along the length of the switching valve body will make it difficult to reduce the size of the switching valve in length, especially when the installation space is limited, the three-position switching valve is due to Too long to fit in this space

Method used

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] Refer below Figure 1 to Figure 13 A dual pilot spool valve of some embodiments of the present invention is described.

[0037] figure 1 The double-pilot spool valve in this embodiment is given. The spool valve is a double-pilot spool valve having one pilot valve part 200, which has a main valve body part 100 and pilot valve parts 200 on both sides. In the embodiment, the main valve body part 100 has a valve structure as a five-port valve, which is a three...

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Abstract

The invention provides a pilot valve structure. The pilot valve structure comprises a pilot valve part (200) and a solenoid valve part (300) used for controlling a work state of the pilot valve part (200), since a piston component with a resetting function is used in a three-position electromagnetic slide valve, functions of a conventional piston and a restoring spring are integrated on the pistoncomponent, switching of valve core positions of three slide valves of a conventional three-position valve can be realized just by cooperation of the piston component and a pilot flow path, moreover,compared with a conventional pilot structure, a pilot structure provided by the embodiment is not changed obviously in size, so that size is reduced greatly in a slide valve length direction. Beneficial effects of concrete implementation means can be seen in an embodiment part.

Description

technical field [0001] The invention relates to a slide valve which uses a valve core sliding in a valve hole to open and close flow passages between multiple ports, in particular to a pilot valve structure. Background technique [0002] The known three-position switching valve is constructed in such a way that pistons are respectively arranged at both ends of a spool spool freely slidably accommodated in a valve hole, and the spring force of a return spring acts on the spool, If the pilot fluid pressure acts on one piston through one pilot valve, the slide valve moves in one direction and switches to the first switching position, and if the pilot fluid pressure acts on the other piston through the other pilot valve above, the above-mentioned spool valve moves in the opposite direction and switches to the second switching position. If the pilot valves on both sides are closed and the pistons on both sides are released from the action of the pilot fluid pressure, the above-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/065F16K31/122F16K31/06
CPCF16K11/0655F16K31/0603F16K31/122
Inventor 陆定华王庆灏
Owner WEISHIXI (ZHEJIANG) FLUID TECH CO LTD