CN202992339U

CN202992339U - Anti-locking electromagnetic valve

Info

Publication number: CN202992339U
Application number: CN 201220678146
Authority: CN
Inventors: 文刚
Original assignee: CHENGDU TE EN DA TECHNOLOGY Co Ltd
Current assignee: Chengdu Tnda Gas Equipment Co ltd
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2013-06-12
Anticipated expiration: 2022-12-11

Abstract

The utility model discloses an anti-locking electromagnetic valve which comprises a valve body, an actuating mechanism, a piston component and a valve cap, wherein an electromagnetic coil is mounted on an iron core casing and fixed inside an actuating mechanism casing mounting groove by a cover plate; one end of the iron core casing penetrates through the actuating mechanism casing mounting groove and is assembled together with the actuating mechanism casing by bolts; a movable iron core and a static iron core are mounted inside the iron core casing, the movable iron core can move horizontally inside the iron core casing, a chamfer is arranged at the end surface, which penetrates through the static iron core, of the iron core rod of the movable iron core; an actuating mechanism is fixedly mounted on the flange upper cover sleeve of the piston component, a piston shaft lower end provided with a ring-shaped groove is movably mounted inside the flange upper cover sleeve, and the ring-shaped groove is provided with the chamfer matched with the chamfer on the iron core rod. Due to the mutually matched effect of the chamfer at one end of the iron core rod of the movable iron core of the anti-locking electromagnetic valve and the chamfer arranged on the ring-shaped groove, the problem of electromagnetic valve locking can be solved.

Description

Anti-jamming solenoid valve

Technical field

The utility model relates to a kind of solenoid valve, relates in particular to a kind of actuator and the solenoid valve of stuck problem can not occur.

Background technique

Solenoid valve is the industry equipment with Electromagnetic Control, be mainly used in adjusting industrial control system medium direction, flow, speed and other parameter, solenoid valve can coordinate different circuit to realize the control of expecting, and precision and the flexibility controlled can both guarantee.at present, gas pipeline, solenoid valve all is installed on gas-fired boiler and gas water-heater, the electromagnetic force that gas electromagnetic valve of the prior art produces with electromagnetic coil is usually opened or the blocking-up fuel gas path, the right angle mode that on gas pipeline, the iron core of the actuator of solenoid valve commonly used and the annular groove on piston assembly adopt is combined together, when solenoid valve leaks air problem, need outage with closed electromagnetic valve, the right angle mode that adopts due to the iron core of actuator and the annular groove on piston assembly is combined together, stuck phenomenon can appear, be difficult to shut electromagnetic valve fast under emergency, this brings potential safety hazard with regard to the life of giving the people.

The model utility content

For above-mentioned deficiency of the prior art, the solenoid valve that the utility model provides has solved problem stuck between the rear actuator of outage and piston assembly.

In order to reach the foregoing invention purpose, the technical solution adopted in the utility model is: a kind of anti-jamming solenoid valve is provided, and it comprises valve body, actuator, piston assembly and valve gap, and described valve body and valve gap are screwed and link together;

Described actuator comprises actuator's shell, iron core shell, moving iron core, coil housing, electromagnetic coil, static iron core cover plate, explosion-proof bolt, iron core bar and wire, described wire is connected with electromagnetic coil, and wire is arranged in the L shaped mounting groove of actuator's shell by explosion-proof bolt; Described electromagnetic coil is arranged on the iron core shell after being wound in coil housing, and is fixed in actuator's shell mounting groove with cover plate; The mounting groove that one end of described iron core shell passes actuator's shell is fixedly installed togather with screw and actuator's shell; Described moving iron core and static iron core are arranged in the iron core shell, and moving iron core can move left and right in the iron core shell, and the end face that the iron core bar of described moving iron core passes that end of static iron core is provided with chamfering;

Described actuator is fixedly mounted on the flange upper cover sleeve of piston assembly, is movably installed with a piston shaft lower end that is provided with annular groove in described flange upper cover sleeve, and described annular groove is provided with the chamfering that matches with chamfering on the iron core bar.

Further, described actuator is that the mode that is threaded is installed together with the flange upper cover sleeve of piston assembly.

Further, described actuator is arranged on the flange upper cover sleeve of piston assembly by the iron core shell.

Further, be provided with seal ring between the end face a of the end face b of described iron core shell and flange upper cover sleeve.

Further, be provided with seal ring between cover plate and actuator's shell and between cover plate and iron core shell.

In sum, the beneficial effects of the utility model are:

1, on iron core bar one end of moving iron core and piston shaft lower end, annular groove is provided with the chamfering that cooperatively interacts, when gas leakage occurring and need shut electromagnetic valve, the power supply of opening actuating mechanism, piston assembly is owing to there is no actuator to its thrust that makes progress, the gravity of self adds power to the right of chamfering end face that the restoring force of epicone spring can be given the iron core bar, iron core bar and moving iron core are moved right and withdraw from annular groove, piston shaft lower end and piston move down under the restoring force effect of gravity and cone spring fast, shut electromagnetic valve, thereby solved because of the stuck security incident problem that occurs between actuator and piston shaft lower end.

2, electromagnetic coil is arranged in the cavity of actuator's shell after being arranged in coil housing, this shell can play shielding action to magnetic field, avoided the magnetic field of electromagnetic coil generation to outward leakage, needed electromagnetic force when the solenoid valve normal operation so both was provided has been avoided again the normal operation of electric equipment to external world to produce and has been disturbed.

Description of drawings

Fig. 1 is the structural representation of anti-jamming solenoid valve;

Fig. 2 is the structure for amplifying schematic diagram of actuator.

Wherein, 1, valve body; 2, actuator; 21, L shaped mounting groove; 22, actuator's shell; 23, iron core shell; 24, moving iron core; 241, iron core bar; 25, coil housing; 26, electromagnetic coil; 27, cover plate; 28, static iron core; 29, explosion-proof bolt; 3, piston assembly; 31, flange upper cover sleeve; 32, annular groove; 33, piston shaft lower end; 34, cone spring; 35, piston; 4, valve gap.

Embodiment

Below in conjunction with the structural representation of anti-jamming solenoid valve and the structure for amplifying schematic diagram of actuator, the utility model is described:

As shown in Figure 1, this anti-jamming solenoid valve comprises valve body 1, actuator 2, piston assembly 3 and valve gap 4, and described valve body 1 and valve gap 4 are screwed and link together;

As shown in Figure 2, described actuator 2 comprises actuator's shell 22, iron core shell 23, moving iron core 24, coil housing 25, electromagnetic coil 26, static iron core 28, cover plate 27, explosion-proof bolt 29, iron core bar 241 and wire, described wire is connected with electromagnetic coil 26, and wire is arranged in the L shaped mounting groove 21 of actuator's shell 22 by explosion-proof bolt 29; Described electromagnetic coil 26 is wound on coil housing 25 and is arranged on iron core shell 23 after interior, and is fixed on cover plate 27 in the mounting groove of actuator's shell 22; The mounting groove that one end of described iron core shell 23 passes actuator's shell 22 is fixedly installed togather with screw and actuator's shell 22; Described moving iron core 24 and quiet iron 28 are arranged in iron core shell 23, and moving iron core 24 can move left and right in iron core shell 23, and the end face that the iron core bar 241 of described moving iron core 24 passes static iron core 2 those ends is provided with chamfering; Be provided with seal ring between cover plate 27 and actuator's shell 22 and between cover plate 27 and iron core shell 23.What wherein actuator's shell 22 adopted is that carbon structural steel is made, thereby can play shielding action to magnetic field.

As shown in Figure 1, described actuator 2 is fixedly mounted on the flange upper cover sleeve 31 of piston assembly 3, be movably installed with a piston shaft lower end that is provided with annular groove 32 33 in described flange upper cover sleeve 31, described annular groove 32 is provided with the chamfering that matches with chamfering on iron core bar 241; Described actuator 2 is that the mode that is threaded is installed together with the flange upper cover sleeve 31 of piston assembly 3; Described actuator 2 is arranged on the flange upper cover sleeve 31 of piston assembly 3 by iron core shell 23; Be provided with seal ring between the end face a of the end face b of described iron core shell 23 and flange upper cover sleeve 31.

During this anti-jamming electromagnetic valve work, the power supply of actuator 2 is on state always, the electromagnetic force that electromagnetic coil 26 produces is to moving 24 1 active forces left of iron core, moving iron core promotes the iron core bar and is moved to the left, the iron core bar 241 that makes an end be positioned at annular groove 32 makes progress to 3 one of piston assemblys and component left, the restoring force of the power that piston shaft lower end 33 makes progress and compressed cone spring 34 acts on piston 35 simultaneously, add the power that upper handle makes progress, make piston 35 break away from valve body 1, thereby make solenoid valve be in opening state; When gas leakage occurring and need shut electromagnetic valve, the power supply of opening actuating mechanism 2, piston assembly 3 is owing to there is no actuator 2 to its thrust that makes progress, the restoring force of the gravity of himself and cone spring 34 is to thrust to the right of chamfering end face of iron core bar 241, iron core bar 241 and moving iron core 24 are moved right and withdraw from

annular groove

32,35 quick closedown solenoid valves under the restoring force effect of gravity and cone spring 34 of piston shaft lower end 33 and piston.

This anti-jamming solenoid valve also has an advantage: if need to realize switching on the pass valve, with the moving iron core in this electromagnetic valve actuating gear and the location swap of static iron core, size to moving iron core and static iron core slightly makes an amendment, just can realize energising pass valve and cut off the power supply closing the conversion of valve, save a large amount of designs and cost of production.

The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also carry out some improvement to the utility model, these improvement also fall in the protection domain of the utility model claim.

Claims

1. an anti-jamming solenoid valve, comprise valve body (1), actuator (2), piston assembly (3) and valve gap (4), and described valve body (1) and valve gap (4) are screwed and link together; It is characterized in that:

Described actuator (2) comprises actuator's shell (22), iron core shell (23), moving iron core (24), coil housing (25), electromagnetic coil (26), static iron core (28), cover plate (27), explosion-proof bolt (29), iron core bar (241) and wire, described wire is connected with electromagnetic coil (26), and wire is arranged in the L shaped mounting groove (21) of actuator's shell (22) by explosion-proof bolt (29); Described electromagnetic coil (26) is arranged on iron core shell (23) after being wound in coil housing (25), and is fixed in the mounting groove of actuator's shell (22) with cover plate (27); The mounting groove that one end of described iron core shell (23) passes actuator's shell (22) is fixedly installed togather with screw and actuator's shell (22); Described moving iron core (24) and static iron core (28) are arranged in iron core shell (23), moving iron core (24) can move left and right in iron core shell (23), and the end face that the iron core bar (241) of described moving iron core (24) passes that end of static iron core (28) is provided with chamfering;

Described actuator (2) is fixedly mounted on the flange upper cover sleeve (31) of piston assembly (3), be movably installed with a piston shaft lower end (33) that is provided with annular groove (32) in described flange upper cover sleeve (31), described annular groove (32) is provided with the chamfering that matches with the upper chamfering of iron core bar (241).

2. anti-jamming solenoid valve according to claim 1, it is characterized in that: described actuator (2) is that the mode that is threaded is installed together with the flange upper cover sleeve (31) of piston assembly (3).

3. anti-jamming solenoid valve according to claim 2, it is characterized in that: described actuator (2) is arranged on the flange upper cover sleeve (31) of piston assembly (3) by iron core shell (23).

4. the described anti-jamming solenoid valve of any one according to claim 1-3, is characterized in that: be provided with seal ring between the end face a of the end face b of described iron core shell (23) and flange upper cover sleeve (31).

5. anti-jamming solenoid valve according to claim 4, is characterized in that: be provided with seal ring between cover plate (27) and actuator's shell (22) and between cover plate (27) and iron core shell (23).