CN214093159U

CN214093159U - Duplex electromagnetic valve

Info

Publication number: CN214093159U
Application number: CN202022516795.5U
Authority: CN
Inventors: 刘华玲
Original assignee: Changzhou Hengli Pneumatic Technology Co ltd
Current assignee: Changzhou Hengli Pneumatic Technology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-08-31
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a pair solenoid valve, which comprises a valve body, air inlet and the choke orifice that have mutual intercommunication on the valve body, the valve body installs the valves on the position that corresponds the choke orifice, the valves is including moving the iron core subassembly, quiet iron core subassembly and solenoid, solenoid installs in the quiet iron core subassembly outside, it sets up in quiet iron core subassembly to move the activity of iron core subassembly, move the iron core subassembly including moving the iron core, the lower extreme fixed mounting who moves the iron core has lower end cap, lower end cap and choke orifice movable contact with close or open the choke orifice, the upper end movable mounting who moves the iron core has last end cap, it is equipped with the core spring that will go up the end cap and be connected with lower end cap to move in the iron core, it is provided with the reset spring who is connected with quiet iron core subassembly to move the iron core outside. In this way, the utility model discloses pair solenoid valve can improve the product durability, satisfies different operational environment's demand, simple structure, safe and reliable.

Description

Duplex electromagnetic valve

Technical Field

The utility model relates to a solenoid valve field especially relates to a pair solenoid valve.

Background

The two-linkage electromagnetic valve is arranged in a high-speed rail door mechanism system and is used for controlling a high-speed rail door opening and closing operation and is connected with a two-position three-way electromagnetic valve. Therefore, the requirement on the duplex electromagnetic valve is high, and the existing duplex electromagnetic valve cannot meet the use requirement of severe environment.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides a pair solenoid valve, can improve the product durability, satisfies different operational environment's demand, simple structure, safe and reliable.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a pair solenoid valve, includes the valve body, air inlet and the valve mouth hole that have mutual intercommunication on the valve body, the valve body installs the valves on the position that corresponds the valve mouth hole, the valves is including moving iron core assembly, quiet iron core assembly and solenoid, solenoid installs in the quiet iron core assembly outside, it sets up in quiet iron core assembly to move the activity of iron core assembly, move the iron core assembly including moving the iron core, the lower extreme fixed mounting who moves the iron core has lower end cap, lower end cap and valve mouth hole movable contact with close or open the valve mouth hole, the upper end movable mounting who moves the iron core has last end cap, be equipped with the core spring that will go up the end cap and be connected with lower end cap in moving the iron core, it is provided with the reset spring who is connected with quiet iron core assembly to move the iron core outside.

In a preferred embodiment of the present invention, the movable iron core has an upper mounting hole at its upper end, the upper plug is movably mounted in the upper mounting hole, and the lower end of the upper plug is connected to the core spring.

In a preferred embodiment of the present invention, the lower end of the plunger has a lower mounting hole, the lower plug is press-fitted into the lower mounting hole by interference fit, and the upper end of the lower plug is connected to the core spring.

In a preferred embodiment of the present invention, the return spring is a straight spring, and the upper plug and the lower plug are made of rubber with high temperature resistance and low temperature resistance.

In a preferred embodiment of the present invention, the static iron core assembly includes a magnetic isolation tube sleeved outside the movable iron core, the static iron core is installed at the upper end of the magnetic isolation tube, the static iron core has an air outlet, when the electromagnetic coil is powered off, the air outlet is communicated with the solenoid valve working port by plugging the air nozzle hole by the plug, the electromagnetic coil is powered on, and the movable iron core assembly moves up to communicate the air nozzle hole with the solenoid valve working port by the plug and the air outlet sealing contact air nozzle hole.

In a preferred embodiment of the present invention, the upper end of the return spring is connected to a magnetism isolating pipe, and the lower end of the magnetism isolating pipe is threadedly mounted in a mounting groove of the valve body.

In a preferred embodiment of the present invention, an acoustic sheet is installed at an upper end of the exhaust port.

In a preferred embodiment of the present invention, the magnetism isolating pipe and the static iron core are integrally formed by welding, and an O-ring is disposed between the magnetism isolating pipe and the mounting groove.

In a preferred embodiment of the present invention, the electromagnetic coil is sleeved outside the magnetism isolating pipe, a saddle-shaped gasket is arranged on the upper end of the electromagnetic coil, and a locking nut for pressing the electromagnetic coil on the magnetism isolating pipe is arranged on the upper end of the electromagnetic coil.

In a preferred embodiment of the present invention, the valve body has an air passage therein for communicating the air inlet with the air nozzle hole, and the end of the air passage is provided with a ball expansion plug.

The utility model has the advantages that: the utility model discloses pair solenoid valve can improve the product durability, satisfies different operational environment's demand, simple structure, safe and reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is a schematic structural view of a preferred embodiment of the dual solenoid valve of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

the parts in the drawings are numbered as follows: 1. the valve comprises a valve body, 11, an air inlet, 12, an air nozzle hole, 13, an air passage, 14, a ball expansion plug, 15, a mounting groove, 2, a valve group, 21, a movable iron core assembly, 211, a movable iron core, 212, a lower plug, 213, an upper plug, 214, a core spring, 215, a return spring, 216, an upper mounting hole, 217, a lower mounting hole, 22, a static iron core assembly, 221, a magnetic isolation pipe, 222, a static iron core, 223, an air outlet, 224, a silencing sheet, 225, an O-shaped ring, 23, an electromagnetic coil, 24, a saddle-shaped gasket, 25 and a locking nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 3, a duplex solenoid valve includes a valve body 1, the valve body 1 has an air inlet 11 and two air nozzle holes 12 communicated with each other, the valve body 1 is provided with a valve group 2 on a position corresponding to the air nozzle hole 12, the valve group 2 includes a movable iron core assembly 21, a stationary iron core assembly 22 and an electromagnetic coil 23, the electromagnetic coil 23 is installed outside the stationary iron core assembly 22, the movable iron core assembly 21 is movably disposed in the stationary iron core assembly 22, the movable iron core assembly 21 includes a movable iron core 211, a lower plug 212 is fixedly installed at a lower end of the movable iron core 211, the lower plug 212 is in movable contact with the air nozzle hole 12 and closes or opens the air nozzle hole 12, an upper plug 213 is movably installed at an upper end of the movable iron core 211, a core spring 214 connecting the upper plug 212 and the lower plug 213 is disposed in the movable iron core 211, and a return spring 215 connected with the stationary iron core assembly 22 is disposed outside the movable iron core 211.

In addition, the movable iron core 211 has an upper mounting hole 216 at an upper end thereof, the upper plug 213 is movably mounted in the upper mounting hole 216, and a lower end of the upper plug 213 is connected to the core spring 214.

The lower end of the movable iron core 211 is provided with a lower mounting hole 217, the lower plug 212 is press-fitted into the lower mounting hole 217 with interference, and the upper end of the lower plug 212 is connected to the core spring 214.

In addition, the reset spring 215 is a straight spring, the electromagnetic valve can normally work within a voltage fluctuation range of +/-30%, and the release voltage of the electromagnetic valve is not less than 5% of the rated voltage in a thermal environment, so that the requirements on the precision and the service life of the spring are higher, the electromagnetic valve reset spring is made of the straight spring, the structural force value precision of the straight spring is easy to guarantee, and the electric performance consistency of the product is better. The upper plug 213 and the lower plug 212 are made of high temperature and low temperature resistant rubber, and the upper plug 213 and the lower plug 212 are core parts of the electromagnetic valve, so the material requirement of the sealing element is particularly important, and not only the reliability of the performance of the normal temperature product is ensured, but also the reliability of the performance of the product in a high and low temperature alternating environment is met. The working state of the electromagnetic valve is a long-time electrifying state, and the normal electrifying can cause the coil to generate heat so that the electromagnetic valve is in a hot state, which can also easily accelerate the aging of the rubber sealing piece. The project product is used for a door control system of a high-speed rail train, and has wide operation region range and large temperature span of a short-time operation environment in view of the operation characteristics of the high-speed rail train. The performance of the electromagnetic valve is still reliable and stable under the condition of alternating high and low temperature performance, so that the requirement on the material of a sealing piece used by a product is extremely high, and the electromagnetic valve is required to be improved rubber which can be used in high-temperature and low-temperature environments. The currently used rubber part is specially made of rubber A980 with high and low temperature performance conditions, and the verified performance meets the use conditions of products.

In addition, the static iron core assembly 22 comprises a magnetism isolating pipe 221 sleeved outside the movable iron core 211, the upper end of the magnetism isolating pipe 221 is provided with a static iron core 222, an air outlet 223 is arranged in the static iron core 222, the plug 212 plugs the air nozzle hole 12 when the electromagnetic coil 23 is powered off so that the air outlet 223 is communicated with the working port of the electromagnetic valve, the electromagnetic coil 23 is powered on, and the plug 213 and the air outlet 223 on the upper portion of the movable iron core assembly 21 are in sealing contact with the air nozzle hole 12 so that the air nozzle hole 12 is communicated with the working port of the electromagnetic valve.

In addition, the upper end of the return spring 215 is connected with the magnetism isolating pipe 221, and the lower end of the magnetism isolating pipe 221 is installed in the installation groove 15 of the valve body 1 through threads.

Further, an muffling sheet 224 is attached to an upper end of the exhaust port 223.

Further, the magnetism isolating pipe 221 and the stationary core 222 are integrally formed by welding, and an O-ring 225 is provided between the magnetism isolating pipe 221 and the mounting groove 15. The magnetism isolating pipe 221 and the static iron core 222 are pressed, welded and designed to be welded in a double-pass mode, sealing performance, torsion resistance and tensile resistance can be guaranteed to be more than 800Kgf, and the use requirements are far higher, so that the product has high reliability.

In addition, the electromagnetic coil 23 is sleeved outside the magnetism isolating pipe 221, a saddle-shaped gasket 24 is arranged at the upper end of the electromagnetic coil 23, and a locking nut 25 for pressing the electromagnetic coil 23 on the magnetism isolating pipe 221 is installed at the upper end of the electromagnetic coil 23.

In addition, an air passage 13 for communicating the air inlet 11 with the air nozzle hole 12 is arranged in the valve body 1, and a ball expansion plug 14 is arranged at the tail end of the air passage 13. The ball expansion plug 14 plugging process is safe and reliable, and the pressure resistance can reach more than 40MPa

The utility model discloses the concrete theory of operation of pair solenoid valve as follows: the group valves of the duplex electromagnetic valve can work independently and simultaneously. Power-off state of the electromagnetic coil 23: the movable iron core assembly 22 seals the lower plug 212 and the air nozzle hole 12 by the acting force of the return spring 215, the air inlet 11 is sealed at the lower plug 212, and the working port of the electromagnetic valve is communicated with the air outlet 223. The solenoid 24 is energized: the electromagnetic attraction generated by the electrification of the electromagnetic coil 24 overcomes the reset spring force, so that the movable iron core component 21 and the static iron core component 22 are attracted together, at the moment, the lower plug 212 of the movable iron core opens the air nozzle hole 12, the upper plug 213 of the movable iron core and the air outlet 223 are sealed and stopped, and the air inlet 11 is communicated with the working port of the electromagnetic valve. The operation of the electromagnetic valve is the cycle action process of power failure and power on.

Be different from prior art, the utility model discloses duplex solenoid valve, service temperature are at-50 ~70 ℃ scope, and it is big to satisfy high and cold high-speed railway train region environmental condition span, to the characteristic demand that product fail safe nature requires highly.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The utility model provides a duplex solenoid valve, includes the valve body, air inlet and the gas nozzle hole that have mutual intercommunication on the valve body, a serial communication port, the valve body installs the valves on the position that corresponds the gas nozzle hole, the valves is including moving iron core assembly, quiet iron core assembly and solenoid, solenoid installs in the quiet iron core assembly outside, it sets up in quiet iron core assembly to move the activity of iron core assembly, move the iron core assembly including moving the iron core, the lower extreme fixed mounting who moves the iron core has lower end cap, lower end cap and gas nozzle hole movable contact with close or open the gas nozzle hole, the upper end movable mounting who moves the iron core has last end cap, be equipped with the core spring that will go up the end cap and be connected with lower end cap in moving the iron core, it is provided with the reset spring who is connected with quiet iron core assembly to move the iron core outside.

2. The duplex solenoid valve as recited in claim 1, wherein the plunger has an upper mounting hole at an upper end thereof, the upper plug is movably mounted in the upper mounting hole, and a lower end thereof is connected to the core spring.

3. The dual electromagnetic valve according to claim 2, wherein the lower end of the plunger has a lower mounting hole, the lower plug is pressed into the lower mounting hole by interference fit, and the upper end of the lower plug is connected to the core spring.

4. The dual solenoid valve as claimed in claim 3, wherein the return spring is a straight spring, and the upper and lower plugs are made of rubber having high and low temperature resistance.

5. A duplex electromagnetic valve according to any one of claims 1 to 4, wherein the stationary iron core assembly comprises a magnetism isolating pipe sleeved outside the movable iron core, a stationary iron core is mounted at the upper end of the magnetism isolating pipe, an exhaust port is arranged in the stationary iron core, the electromagnetic coil is powered on, the electromagnetic coil is powered off, the air nozzle hole is blocked by a plug so that the exhaust port is communicated with the working port of the electromagnetic valve, and the movable iron core assembly moves upwards, the plug is in sealing contact with the exhaust port so that the air nozzle hole is communicated with the working port of the electromagnetic valve.

6. The duplex solenoid valve as recited in claim 5, wherein the upper end of the return spring is connected with a magnetism isolating pipe, and the lower end of the magnetism isolating pipe is installed in an installation groove on the valve body in a threaded manner.

7. The twin solenoid valve as defined in claim 6 wherein an muffling sheet is attached to an upper end of the exhaust port.

8. The duplex solenoid valve according to claim 7, wherein the magnetism isolating pipe and the static iron core are integrally formed by welding, and an O-shaped ring is arranged between the magnetism isolating pipe and the installation groove.

9. The duplex solenoid valve as recited in claim 8, wherein the electromagnetic coil is sleeved outside the magnetism isolating pipe, a saddle-shaped gasket is arranged at the upper end of the electromagnetic coil, and a locking nut for pressing the electromagnetic coil on the magnetism isolating pipe is arranged at the upper end of the electromagnetic coil.

10. The dual electromagnetic valve according to claim 9, wherein the valve body has an air passage therein for communicating the air inlet with the air nozzle hole, and the end of the air passage is provided with a ball-expansion plug.