CN219588232U - Electromagnetic valve for rail transit - Google Patents

Abstract

The utility model discloses a solenoid valve for track traffic, which comprises a valve body and a valve rod part arranged at the top of the valve body, wherein the valve rod part comprises an end cover and an installation box which is integrally formed with the end cover and is positioned at the top of the end cover, a static iron core is fixedly arranged at the top of the inner side of the installation box, a movable iron core which slides along the vertical reverse direction is arranged below the static iron core and is arranged in the installation box, a connecting rod which is coaxially distributed with the movable iron core is connected with the bottom of the movable iron core through threads, and a valve core is fixedly arranged at the bottom end of the connecting rod. The solenoid valve for track traffic is characterized in that a branch port is arranged at the water inlet end of the valve body, a water inlet port butted with the branch port is arranged between the static iron core and the movable iron core on the mounting box, and when the coil is powered off, the movable iron core can be directly acted by means of the conveyed fluid pressure, so that the valve core is tightly attached to the communication hole, and the leakage phenomenon caused by failure of the spring is avoided.

Description

Electromagnetic valve for rail transit

Technical Field

The utility model relates to the technical field of rail transit, in particular to an electromagnetic valve for rail transit.

Background

CN212718300U discloses a solenoid valve for rail transit, which comprises a fixing plate, the upper end fixedly connected with valve body of fixed plate, the equal fixedly connected with protective sleeve of the left and right sides end of valve body, the inner wall fixedly connected with baffle of valve body, the upper end fixedly connected with shell of valve body, the inside wall fixedly connected with coil of shell, fixedly connected with is located the inboard stand pipe of coil between the inner chamber upper and lower wall of shell. The electromagnetic valve for track traffic has the advantages of long service life, adjustability and the like, solves the problems that most of the existing electromagnetic valves have no special fixing structure, are supported and fixed by pipelines connected with the electromagnetic valve, have poor stability, easily cause interface breakage when a valve body or the pipelines vibrate, leak water or leak air, seriously affect the service life of the electromagnetic valve, and are closed when the electromagnetic valve is powered off, and cannot be connected with the pipelines, so that the electromagnetic valve is inconvenient to use.

The existing normally closed electromagnetic valve usually realizes resetting by means of a spring, after a period of use, the spring can cause poor elasticity due to self failure or corrosion of internal liquid, and then the tightness of a valve core is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the electromagnetic valve for the track traffic, which solves the problems that the existing normally closed electromagnetic valve is reset by means of a spring, and the spring can cause poor elasticity due to self failure or corrosion of internal liquid after being used for a period of time, so that the sealing property of a valve core is affected.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: an electromagnetic valve for rail transit comprises a valve body and a valve rod part arranged at the top of the valve body with a flange,

the valve rod part comprises an end cover and a mounting box which is integrally formed with the end cover and is positioned at the top of the end cover, a static iron core is fixedly arranged at the top of the inner side of the mounting box, a movable iron core which slides along the vertical reverse direction is arranged below the static iron core and is arranged in the mounting box, a connecting rod which is coaxially distributed with the movable iron core is connected with the movable iron core in a threaded manner, a valve core is fixedly arranged at the bottom end of the connecting rod, a coil is sleeved outside the movable iron core, a junction box which is electrically connected with the coil is arranged outside the mounting box, a branch port is arranged at the input end of the valve body in a threaded manner, a water inlet port which is in butt joint with the branch port is arranged on the outer wall of the mounting box between the static iron core and the movable iron core in a threaded manner, a plugging frame for plugging the water inlet port is arranged at the top of the movable iron core,

the inside of valve body is equipped with the intercommunicating pore with case looks adaptation.

Preferably, the valve core consists of a pressing plate and a rubber pad which are distributed up and down, and a gap is reserved between the outer edge of the pressing plate and the inner wall of the valve body.

Preferably, the connecting rod movably penetrates through the end cover, and a sealing sleeve which is in sliding fit with the outer wall of the connecting rod is embedded in the top thread of the end cover.

Preferably, the plugging frame is of an integrated structure and comprises a threaded part, two arc-shaped connecting plates and a baffle ring, wherein the threaded part is sequentially distributed from bottom to top, the arc-shaped connecting plates are symmetrically distributed in the center, and the baffle ring is matched with the water inlet.

Preferably, the branch port is connected with the water inlet port through a hose.

Advantageous effects

The utility model provides an electromagnetic valve for rail transit. Compared with the prior art, the method has the following beneficial effects:

this solenoid valve for track traffic sets up the branch road port through the end that intakes in the valve body to set up the port that intakes that interfaces with the branch road port between quiet iron core and moving the iron core on the mounting box, when the coil outage, can directly act on moving the iron core with the help of the fluid pressure of carrying, realize the inseparable laminating of case and intercommunicating pore, with this replaces traditional spring realization to reset, avoided leaking the phenomenon that arouses because of the spring inefficacy.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the valve body and the valve stem of the present utility model;

FIG. 3 is a schematic structural view of the plugging frame of the present utility model;

in the figure: 1. a valve body; 2. a valve stem portion; 3. an end cap; 4. a mounting box; 5. a stationary core; 6. a movable iron core; 7. a connecting rod; 8. a valve core; 9. a coil; 10. a junction box; 11. a branch port; 12. a water inlet port; 13. a plugging frame; 14. a communication hole; 15. a pressing plate; 16. a rubber pad; 17. sealing sleeve; 18. a threaded portion; 19. an arc-shaped connecting plate; 20. a baffle ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a solenoid valve for track traffic, including valve body 1 and flange mounting in the valve rod portion 2 at its top, valve rod portion 2 includes end cover 3 and with end cover 3 integrated into one piece and be located the installation box 4 at end cover 3 top, the inboard top fixed mounting of installation box 4 has quiet iron core 5, the below of quiet iron core 5 and be equipped with along vertical reverse gliding movable iron core 6 in installation box 4, movable iron core 6's bottom threaded connection has rather than coaxial distribution's connecting rod 7 and fixedly mounted with case 8 in connecting rod 7's bottom, movable iron core 6's outside cover is equipped with coil 9 and is equipped with the terminal box 10 with coil 9 electric connection in installation box 4's outside, branch road port 11 is installed to valve body 1 input screw thread, install the water inlet port 12 with branch road port 11 butt joint on the installation box 4 outer wall between quiet iron core 5 and movable iron core 6, movable iron core 6's top is installed and is supplied the shutoff frame 13 of water inlet port 12 shutoff, the inside of valve body 1 is equipped with the intercommunicating pore 14 with case 8 looks adaptation.

Based on the arrangement of the structure, the electromagnetic valve for track traffic consists of a valve body 1 and a valve rod part 2, wherein the valve body 1 is used for realizing the transportation of fluid, the valve rod part 2 is used for realizing the on-off of the valve body 1, in particular, in the working process, the electromagnetic valve is a normally closed electromagnetic valve, namely when a coil 9 is not electrified, at the moment, water is fed into the input end of the valve body 1, part of the water is sequentially fed between a static iron core 5 and a movable iron core 6 at the top of an installation box 4 through a branch port 11 and a water inlet port 12, the movable iron core 6 is pushed to move downwards, the movable iron core 6 drives the valve core 8 to cover a communication hole 14 through a connecting rod 7, thereby realizing the cutoff of the valve body 1, when the coil 9 is electrified, the movable iron core 6 moves upwards under the action of electromagnetic force, the distance between the movable iron core 6 and the static iron core 5 is reduced, the water in the valve body is refluxed from the water inlet 12 and the water inlet 12 is blocked by means of the blocking frame 13, the water inlet 12 is not filled at the moment, meanwhile, the movable iron core 6 drives the valve core 8 to ascend through the connecting rod 7, so that the valve core 8 is far away from the communication hole 14, and the through flow of the valve body 1 is realized, the electromagnetic valve for track traffic is provided with the branch port 11 at the water inlet end of the valve body 1, the water inlet 12 butted with the branch port 11 is arranged between the static iron core 5 and the movable iron core 6 on the mounting box 4, and when the coil 9 is powered off, the fluid pressure conveyed can directly act on the movable iron core 6, so that the close fitting of the valve core 8 and the communication hole 14 is realized, the traditional spring is replaced, the reset is realized, and the leakage flow phenomenon caused by the failure of the spring is avoided

Further, the valve core 8 is composed of a pressing plate 15 and a rubber pad 16 which are distributed up and down, and a gap is reserved between the outer edge of the pressing plate 15 and the inner wall of the valve body 1. When the valve core 8 covers the communication hole 14, namely, the valve body 1 is in a cut-off state, when the valve core 8 is far away from the communication hole 14, namely, the valve body 1 is in a through-flow state, the sealing performance of the valve core 8 covering the communication hole 14 can be ensured when cut-off is ensured through the rubber pad 16 arranged at the bottom of the pressing plate 15, a gap is reserved between the pressing plate 15 and the inner wall of the valve body 1, and in the cut-off state, fluid at the input end can act on the top of the pressing plate 15 through the gap, so that the sealing performance between the valve core 8 and the communication hole 14 is further ensured by means of fluid pressure.

Further, the connecting rod 7 movably penetrates through the end cover 3, and a sealing sleeve 17 which is in sliding fit with the outer wall of the connecting rod 7 is embedded in the top thread of the end cover 3. The connecting rod 7 is used as a connecting piece between the movable iron core 6 and the valve core 8, so that fluid can be prevented from entering the lower part of the movable iron core 6 at the penetrating part of the connecting rod 7 to influence the lifting of the movable iron core 6.

Further, the plugging frame 13 is of an integrated structure and consists of a threaded part 18, two arc-shaped connecting plates 19 and a baffle ring 20, wherein the threaded part 18 is distributed from bottom to top in sequence, the arc-shaped connecting plates 19 are distributed in a central symmetry mode, and the baffle ring 20 is matched with the water inlet port 12. The plugging frame 13 is used for plugging the water inlet 12 in the process of lifting the movable iron core 6 so as to eliminate the pressure acted on the top of the water inlet 12, so as to realize stable through flow of the valve body 1, specifically, the plugging frame 13 is in an annular structure, a threaded part 18 at the bottom of the plugging frame is used for realizing the installation operation on the top of the movable iron core 6, a baffle ring 20 at the top of the plugging frame is used for realizing the plugging of the water inlet 12, and two arc-shaped connecting plates 19 are used for realizing the connection of the threaded part 18 and the baffle ring 20.

Further, the branch port 11 is connected with the water inlet port 12 through a hose. Wherein, branch port 11 adopts the hose to realize the intercommunication with intake port 12, and the dismouting of being convenient for does not just influence the wiring of terminal box 10.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. An electromagnetic valve for rail transit is characterized in that: comprises a valve body (1) and a valve rod part (2) arranged at the top of the valve body;

the valve rod part (2) comprises an end cover (3) and a mounting box (4) which is integrally formed with the end cover (3) and is positioned at the top of the end cover (3), a static iron core (5) is fixedly arranged at the top of the inner side of the mounting box (4), a movable iron core (6) which slides along the vertical reverse direction is arranged below the static iron core (5) and is arranged on the mounting box (4), a connecting rod (7) coaxially distributed with the movable iron core (6) is connected with the movable iron core in a threaded manner, a valve core (8) is fixedly arranged at the bottom end of the connecting rod (7), a coil (9) is sleeved outside the movable iron core (6), a junction box (10) electrically connected with the coil (9) is arranged outside the mounting box (4), a branch port (11) is arranged at the input end of the valve body (1) in a threaded manner, a water inlet port (12) which is connected with the branch port (11) is connected with the outer wall of the mounting box (4) between the static iron core (5) and the movable iron core (6) in a threaded manner, and a blocking frame (13) for blocking the water inlet port (12) is arranged at the top of the movable iron core (6);

the valve body (1) is internally provided with a communication hole (14) matched with the valve core (8).

2. The electromagnetic valve for rail transit according to claim 1, wherein: the valve core (8) consists of a pressing plate (15) and a rubber pad (16) which are distributed up and down, and a gap is reserved between the outer edge of the pressing plate (15) and the inner wall of the valve body (1).

3. The electromagnetic valve for rail transit according to claim 1, wherein: the connecting rod (7) movably penetrates through the end cover (3) and is embedded with a sealing sleeve (17) which is in sliding fit with the outer wall of the connecting rod (7) at the top of the end cover (3) in a threaded manner.

4. The electromagnetic valve for rail transit according to claim 1, wherein: the plugging frame (13) is of an integrated structure and consists of a threaded part (18), two arc-shaped connecting plates (19) and a baffle ring (20), wherein the threaded part (18), the arc-shaped connecting plates (19) and the baffle ring (20) are symmetrically distributed at the center, and the baffle ring is matched with the water inlet port (12).

5. The electromagnetic valve for rail transit according to claim 1, wherein: the branch port (11) is connected with the water inlet port (12) through a hose.