CN203476867U

CN203476867U - Three-position four-way combination solenoid valve

Info

Publication number: CN203476867U
Application number: CN201320236458.8U
Authority: CN
Inventors: 杨又初
Original assignee: Shanghai Fengshen Refrigeration Controls Co Ltd
Current assignee: Shanghai Fengshen Refrigeration Controls Co ltd
Priority date: 2013-05-03
Filing date: 2013-05-03
Publication date: 2014-03-12
Anticipated expiration: 2023-05-03

Abstract

This utility model discloses a three-position four-way combination solenoid valve, comprising a valve body adopting a close sealing structure. All parts of the valve body adopts a split-type combination structure, and two sides of the valve body are provided with a load reduction port and a load addition port. The load reduction port and the load addition port are connected to a piston rod. The other two sides of the valve body are respectively provided with an oil inlet and an oil outlet. A coil one and a coil four are positioned on the two sides of the oil inlet, and the coil two and the coil three are positioned on the two sides of the oil outlet. Valve elements in the oil inlet and the oil outlet are direct-acting valve elements. By adopting the direct-acting valve body, the three-position four-way combination solenoid valve thoroughly improves the traditional slide valve structure, the valve element assembly is driven to operate by an electromagnet to achieve controlling the three-position four-way direction to change. Because the valve employs the specific close sealing structure, the three-position four-way combination solenoid valve has advantages of reliable and sealing motions, block prevention, high durability and low failure rates.

Description

3-position 4-way multifunctional electromagnetic valves

Technical field

The utility model relates to solenoid valve, relates in particular to a kind of 3-position 4-way multifunctional electromagnetic valves.

Background technique

Three position four-way electromagnetic valve is the conversion element between hydraulic control system and electrical apparatus control system, and it utilizes the suction of two ends electromagnet to realize the motion of spool, thereby changes the break-make of oil circuit, and then realizes the commutation of executive component.Three position four-way electromagnetic valve both domestic and external is sliding valve structure form.The general structure of three position four-way electromagnetic valve mainly comprises valve body, spool, setting sleeve, centralizing spring, back-up ring, push rod, ring, armature, guide pin bushing and electromagnetic coil and fastening piece at present.The spool of valve inner can be realized the conversion of left position, meta, three positions, right position.When spool during in meta as seen from the figure each hydraulic fluid port each do not communicate,

When spool in left when position as seen from the figure oil circuit can enter A mouth by P mouth and go out, B mouth communicates with T mouth simultaneously.When spool in right when position oil circuit can enter B mouth by P mouth and go out, A mouth communicates with T mouth simultaneously.

Working principle: have airtight chamber in three position four-way electromagnetic valve, at diverse location, have through hole, different oil pipes is led in each hole, in the middle of chamber, it is spool, two sides is two blocks of electromagnet, which side the magnet coil energising spool of which face will attracted to, by controlling the movement of spool, block or spill different oil drainage holes, and oil inlet hole is often opened, hydraulic oil will enter different oil exit pipes, then by oily pressure, promote the piston of oil cylinder, piston drives again piston rod, piston rod driving mechanical device action.By controlling the electric current of electromagnet, just controlled mechanical motion like this.

The three position four-way electromagnetic valve of current employing sliding valve structure form in use ubiquity: have energising not commutate; Have a power failure and do not reset; Leak three kinds.

Failure cause: coil may be burnt or connect insecure; Spool blocks; Spring damages, seal ring breakage etc.

Model utility content

The utility model embodiment technical problem to be solved is, provides a kind of and has that function is controlled in 3-position 4-way commutation, sealing is reliable, anti-sticking is durable, the 3-position 4-way multifunctional electromagnetic valves of failure rate is low.

Described 3-position 4-way multifunctional electromagnetic valves, comprise valve body, the both sides of described valve body are equipped with respectively off-load mouth and increment of load mouth, described off-load mouth and increment of load mouth are for being connected with piston cylinder, the not outer both sides of described valve body are respectively arranged with filler opening and drain tap, described filler opening both sides are respectively arranged with coil one and coil four, the both sides of described drain tap are respectively arranged with coil two and coil three, spool in described filler opening and drain tap is direct-acting type spool, when coil two, coil four obtains electric, coil one, coil three dead electricity, filler opening is communicated with off-load mouth, drain tap is communicated with increment of load mouth, piston is to left movement,

When coil two, coil four dead electricity, coil one, coil three obtain electric, and filler opening is communicated with increment of load mouth, and off-load mouth is communicated with drain tap, and piston moves right;

After nitrogen test run is shut down, coil two, coil four dead electricity, coil one, coil three obtain electric, and filler opening is communicated with increment of load mouth, and off-load mouth is communicated with drain tap, and piston is got back to the right;

When coil one, coil two, coil three, coil four dead electricity, all pipelines are all closed, and keep static pressure state.

Described valve body adopts cut-off type sealing configuration.

The each several part of described valve body adopts Split assembled linkage structure.

Implement the utility model embodiment, there is following beneficial effect:

The utility model embodiment adopts direct-acting type valve body, thoroughly improved conventional spool valves structural type, mangetic core assembly directly drives work by electromagnet, realize 3-position 4-way commutation and control function, because this valve has adopted unique cut-off type sealing means, therefore there is action, sealing reliably, the features such as anti-sticking is durable, failure rate is low.

Accompanying drawing explanation

Fig. 1 is that the utility model is for 3-position 4-way multifunctional electromagnetic valves example structure schematic diagram.

Embodiment

For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.

The utility model embodiment 3-position 4-way multifunctional electromagnetic valves, as shown in Figure 1, comprise the valve body 1 that adopts cut-off type sealing configuration, the each several part of valve body 1 adopts Split assembled linkage structure, the both sides of valve body 1 are equipped with respectively off-load mouth 2 and increment of load mouth 3, described off-load mouth 2 and increment of load mouth 3 are for being connected with piston cylinder 10, the not outer both sides of described valve body 1 are respectively arranged with filler opening 4 and drain tap 5, filler opening 4 both sides are respectively arranged with coil 1 and coil 46, the both sides of drain tap 5 are respectively arranged with coil 27 and coil 38, spool in filler opening 4 and drain tap 5 is direct-acting type spool, when coil 27, coil 46 obtains electric, coil 1, coil 38 dead electricity, filler opening 4 is communicated with off-load mouth 3, drain tap 5 is communicated with increment of load mouth 3, piston is to left movement,

When coil 27, coil 46 dead electricity, coil 1, coil 38 obtain electric, and filler opening 4 is communicated with increment of load mouth 3, and off-load mouth 3 is communicated with drain tap 5, and piston moves right;

After nitrogen test run is shut down, coil 27, coil 46 dead electricity, coil 1, coil 38 obtain electric, and filler opening 4 is communicated with increment of load mouth 3, and off-load mouth 3 is communicated with drain tap 5, and piston 11 is got back to the right;

When coil 1, coil 27, coil 38, coil 49 dead electricity, all pipelines are all closed, and keep static pressure state.

Above disclosed is only a kind of preferred embodiment of the utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.

Claims

1. a 3-position 4-way multifunctional electromagnetic valves, comprise valve body (1), it is characterized in that, the both sides of described valve body (1) are equipped with respectively off-load mouth (2) and increment of load mouth (3), described off-load mouth (2) and increment of load mouth (3) are for being connected with piston cylinder, the not outer both sides of described valve body (1) are respectively arranged with filler opening (4) and drain tap (5), described filler opening (4) both sides are respectively arranged with coil one (9) and coil four (6), the both sides of described drain tap (5) are respectively arranged with coil two (7) and coil three (8), spool in described filler opening (4) and drain tap (5) is direct-acting type spool, when coil two (7), coil four (6) obtains electric, coil one (9), coil three (8) dead electricity, filler opening (4) is communicated with off-load mouth (3), drain tap (5) is communicated with increment of load mouth (3), piston is to left movement,

When coil two (7), coil four (6) dead electricity, coil one (5), coil three (8) obtain electric, and filler opening (4) is communicated with increment of load mouth (3), and off-load mouth (3) is communicated with drain tap (5), and piston moves right;

When coil one (9), coil two (7), coil three (8), coil four (6) dead electricity, all pipelines are all closed, and keep static pressure state.

2. 3-position 4-way multifunctional electromagnetic valves according to claim 1, is characterized in that, described valve body (1) adopts cut-off type sealing configuration.

3. 3-position 4-way multifunctional electromagnetic valves according to claim 1 and 2, is characterized in that, the each several part of described valve body (1) adopts Split assembled linkage structure.