CN203656208U

CN203656208U - Pilot pressure-differential type low-energy-consumption large-flow electromagnetic valve

Info

Publication number: CN203656208U
Application number: CN201320848568.XU
Authority: CN
Inventors: 杨新葵; 莫智锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-06-18
Anticipated expiration: 2023-12-20

Abstract

The utility model discloses a pilot pressure-differential type low-energy-consumption large-flow electromagnetic valve. The pilot pressure-differential type low-energy-consumption large-flow electromagnetic valve is characterized in that a pilot valve seat is arranged in a sleeve, and a pilot hole is formed in the pilot valve seat; the rear end of a main valve spool extends into the pilot seat, and the rear end face of the main valve spool and the bottom end face of the pilot valve seat form a working gap therebetween; a main valve spool spring is arranged between the main valve spool and the pilot valve seat; a pilot seal is arranged between moving iron and the rear end face of the pilot valve seat. The pilot pressure-differential type low-energy-consumption large-flow electromagnetic valve has the advantages that electric power is greatly lowered, an electromagnetic coil is greatly shortened, the coil size is only 30% of that in the prior art, material consumption is greatly reduced, and manufacturing cost is lowered; working stroke clearance of the main valve spool between the main valve spool and the pilot valve seat is unlimited and can be made long enough to meet requirements on mass flow which can reach more than four times of that of an electromagnetic valve of the same type; the electromagnetic valve is downsized, convenient to mount and use and especially suitable for occasions with requirement on compactness.

Description

The differential low energy consumption and large flow solenoid valve of guide

Technical field

The utility model relates to a kind of solenoid valve.

Background technique

Solenoid valve is often operated in the working environment of pressurized gas, play the effect of connecting or ending, present stage, relying on the guide electromagnetic valve of electromagnetic action is the most practical structure, because all needing electromagnetic force, pilot hole, main valve plug and valve port open, so electromagnetic force need greatly, the shortcoming causing be mainly reflected in energy consumption excessive on.The Typical Representative of another low power consumption is exactly the solenoid valve as 201120340952.x, and the solenoid valve of this type is due to too complicated on project organization, and it is reasonable not that the shortcoming causing is mainly reflected in, and increases in manufacture cost and manufacture difficulty.

In order to overcome above-mentioned shortcoming, the applicant has researched and developed the solenoid valve that the patent No. is 201220307496.3, and this solenoid valve major advantage is energy efficient, and volume is little, is convenient to install.

But in actual use, the solenoid valve that the patent No. is 201220307496.3 also exposes defect: the aperture of valve is little, can not adapt to the needs of large flow.Concrete reason is (referring to 201220307496.3 patent documentation): the shift motion of spool is iron and determines the gap between iron.And that this gap can not be designed is larger, otherwise the volume of battery coil will be the increase of how much levels, so the aperture of valve is just restricted.

Summary of the invention

The purpose of this utility model is to provide the differential low energy consumption and large flow solenoid valve of a kind of guide to make up the deficiency of prior art.

The technical solution of the utility model is: the differential low energy consumption magnetic valve of guide, comprise import, outlet, valve seat, sleeve pipe and main valve plug, sleeve pipe has electromagnetic coil outward, in sleeve pipe, there is iron and determine iron, in main valve plug, there is through hole, between valve seat and main valve plug, have valve port and sealing valve port, between main valve plug and sleeve pipe, have main valve plug sealing, it is characterized in that: in sleeve pipe, be provided with guide's valve seat, in guide's valve seat, have pilot hole; Main valve plug rear end extend in guide's valve seat, between main valve plug ear end face and guide's valve seat bottom end, forms the working clearance; Between main valve plug and guide's valve seat, there is main valve plug spring; Between moving iron and pilot valve base rear end face, there is guide to seal, in guide's valve seat, have sealing.

Good effect of the present utility model is: on the basis of all advantages that has 201220307496.3 patents, the shift motion of main valve plug can be done to obtain to long enough, meet the needs of large flow, can reach solenoid valve of the same type as more than 4 of 201220307496.3 flows times.Volume reduces, and is convenient to install and use, and is particularly suitable for requiring compact occasion.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment in the time of closed condition.

Fig. 2 is the structural representation of the utility model embodiment in the time of opening state.

Embodiment

In the drawings, 1 is import, and 2 is valve seat, and 3 is outlet, 4 is sealing valve port, and 5 is main valve plug, and 6 is main valve plug sealing, and 7 is main valve plug spring, 8 is sealing, and 9 is air gap, and 10 is pilot hole, and 11 is moving iron, 12 is iron core spring, and 13 for to determine iron, and 14 is through hole, 15 is electromagnetic coil, and 16 is guide's sealing, and 17 is guide's valve seat, 18 is sleeve pipe, and 19 is the working clearance, and 20 is valve port.

When valve is static:

Electromagnetic coil 15 not electric, main valve plug 5 is pushed to valve port 20 under the working medium pressure acting in conjunction of main valve plug spring 7, iron core spring 12, import 1, sealing valve port 4 seals up valve port 20, now exports 3 owing to there is no the pressure of working medium, in low-pressure state.

Now, solenoid valve is in closed condition, in import 1 to not having working medium to flow between outlet 3.

Dynamically time:

Electromagnetic coil 15 obtains electric, and produces electromagnetic force, and the thrust that moving iron 11 is overcome to moving iron spring 12 is attracted to determines iron 13, and moving iron 11 and air gap 9 distances of determining between iron 13 change into zero.Solenoid valve in the past, this air gap 9 is exactly the shift motion of main valve plug 5, but in the present embodiment, above-mentioned both without any contact.

Now be installed on guide on moving iron 11 and seal 16 servo-actuated iron 11 and move, and step in step sleeve 18 on guide's valve seat 17 props up, and can not move.So pilot hole 10 is opened.

After pilot hole 10 is opened, the space in sleeve pipe 18 is communicated with by pilot hole 10, through hole 14 and outlet 2, those sleeve pipe 18 internal pressures and the consistent low-pressure state that is in together of outlet 3 pressure.

Now, higher than the pressure in sleeve pipe 18, just there is pressure reduction at the two ends of main valve plug sealing 6 in the pressure of import 1, the pressure of gas will promote main valve plug 5 and overcome the thrust of main valve plug spring 7, move to moving iron 11 directions, the sealing valve port 4 on main valve plug 5 leaves valve port 20 thereupon, and valve port 20 is opened.

Now, solenoid valve, in opening state, has working medium to flow between import 1 exports 3.

Can find out, the aperture of valve port 20 is relevant with the formation that main valve plug 5 moves, and in the present embodiment, when main valve plug 5 moves to terminal, the end face bottom end of guide's valve seat 17 of just fitting, that is to say thereafter, and main valve plug 5 strokes equal the axial length of working clearance 19.According to actual needs, the axial length in design work gap 19 that can be artificial, but, without the parameter that increases electromagnetic coil 15, this is also creationary embodiment of the present utility model.

In the time of needs shut electromagnetic valve, only need be to electromagnetic coil 15 power-off, all parts can reset (main valve plug 5 resets under the effect of main valve plug spring 7).

The effect of sealing 8 is to prevent gas circuit short circuit.

Claims

1. the differential low energy consumption and large flow solenoid valve of guide, comprise import, outlet, valve seat, sleeve pipe and main valve plug, sleeve pipe has electromagnetic coil outward, in sleeve pipe, there is iron and determine iron, in main valve plug, there is through hole, between valve seat and main valve plug, have valve port and sealing valve port, between main valve plug and sleeve pipe, have main valve plug sealing, it is characterized in that: in sleeve pipe, be provided with guide's valve seat, in guide's valve seat, have pilot hole; Main valve plug rear end extend in guide's valve seat, between main valve plug ear end face and guide's valve seat bottom end, forms the working clearance; Between main valve plug and guide's valve seat, there is main valve plug spring; Between moving iron and pilot valve base rear end face, there is guide to seal, in guide's valve seat, have sealing.