CN211315118U

CN211315118U - Miniature electromagnetic valve

Info

Publication number: CN211315118U
Application number: CN201922161970.0U
Authority: CN
Inventors: 李学谦
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-21
Anticipated expiration: 2029-12-06

Abstract

A miniature electromagnetic valve comprises an electromagnetic driving member, a valve seat with a water inlet section and a water outlet section, and a diaphragm assembly, wherein the valve seat is provided with a cavity for accommodating the diaphragm assembly; an action pressure conversion hole is arranged on the side surface of the lower part of the coil framework of the electromagnetic driving component, the action pressure conversion hole communicates the upper cavity with the water outlet section, a ball plug is arranged at the outer end of the action pressure conversion hole, and a one-step formed ball plug sealing part which is used for sealing the ball plug and extends down from the plastic shell of the electromagnetic driving component is arranged at the outer end of the action pressure conversion hole. The utility model has the advantages of guarantee that stifled ball can not drop.

Description

Miniature electromagnetic valve

Technical Field

The utility model belongs to the technical field of the valve and specifically relates to a small miniature solenoid valve.

Background

In order to solve the problem that the overall size of the solenoid valve cannot be smaller under the condition of ensuring that the water yield is unchanged in the prior art, the applicant previously applied a chinese patent, which is shown in fig. 2, and includes an electromagnetic driving member 100, a valve seat 200 with a water inlet section 210 and a water outlet section 220, and a diaphragm assembly 300, wherein a cavity 230 for accommodating the diaphragm assembly 300 is arranged on the valve seat 200, the diaphragm assembly 300 is arranged in the cavity 230, the electromagnetic driving member 100 is arranged on the valve seat 200 corresponding to the cavity 230, and the electromagnetic driving member 100 controls the state of the diaphragm assembly 300 in the cavity 230, so as to control the conduction or the disconnection of the liquid flowing through the valve seat 200; an action pressure conversion hole 320 is formed in the side face of the lower portion of the coil framework 110 of the electromagnetic driving component 100, the action pressure conversion hole 320 is used for communicating the upper cavity with the water outlet section 220, a blocking ball 3210 is arranged at the outer end of the action pressure conversion hole 320, and when the miniature electromagnetic valve with the structure is used, the blocking ball 3210 is usually flushed out when the water pressure is too high, so that the effect of blocking the ball is lost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem, the utility model provides a guarantee miniature solenoid valve that stifled ball can not drop.

The technical scheme of the utility model is that: the electromagnetic driving component controls the state of the diaphragm component in the cavity, so that the liquid flowing through the valve seat is controlled to be switched on or off; be equipped with action pressure conversion hole on the coil skeleton lower part side of electromagnetic drive component, action pressure conversion hole will go up cavity and play water section intercommunication the outer end in action pressure conversion hole is equipped with a stifled ball the outer end in action pressure conversion hole is equipped with and is used for sealing stifled ball with the plastic casing of electromagnetic drive component extends the one shot forming's stifled ball sealing portion that gets off.

As an improvement of the present invention, the electromagnetic driving member includes a coil wound on the coil frame, and a magnetic conductive member, an iron core for controlling the membrane assembly is disposed in the central hole of the coil frame, a return spring is disposed on the iron core, the magnetic conductive member includes an upper end piece and a side piece, the side piece is close to or attached to the outer edge of the coil frame, and the upper end piece is close to or attached to the upper end surface of the coil frame and blocks the upper opening of the central hole; the plastic shell is arranged on the periphery of the electromagnetic driving component.

As an improvement to the present invention, the plastic housing is formed into an integral structure with the electromagnetic driving member by injection molding.

As an improvement to the present invention, the outside of the electromagnetic driving member is injection molded to form an integrated electromagnetic driving member, and then the integrated electromagnetic driving member is disposed in the plastic housing.

As right the utility model discloses an improvement, magnetic conduction spare still includes the second lateral plate of being connected with the top end piece, the second lateral plate with the lateral plate symmetry sets up.

As right the utility model discloses an it is right to improve the keeping away from of magnetic conduction piece the one end of upper end piece is equipped with the clevis be equipped with the groove on the lower part lateral wall of coil skeleton, the clevis is in the inslot.

As an improvement, the utility model is characterized in that the upper end sheet of the magnetic conduction piece is provided with a magnetic conduction block in the middle hole of the coil framework.

As an improvement of the utility model, the lower end of the iron core is provided with a rubber cap.

As right the utility model discloses an improvement, cavity and lower cavity are separated into with the cavity to the diaphragm subassembly, the cavity is including the section of intaking and go out the water section down, it connects the main valve mouth to go out the water section, pilot hole and action pressure conversion hole have been seted up on the diaphragm subassembly, the pilot hole will go up cavity and the section of intaking intercommunication, action pressure conversion hole will go up cavity and play water section intercommunication.

As an improvement of the utility model, the lower end of the plastic shell is provided with a connecting seat.

As right the utility model discloses an improvement, cavity and lower cavity are separated into with the cavity to the diaphragm subassembly, the cavity is including the section of intaking and go out the water section down, it connects the main valve mouth to go out the water section, the last pilot hole of having seted up of diaphragm subassembly, the pilot hole will go up cavity and the section of intaking intercommunication be equipped with action pressure conversion hole on the side of coil skeleton lower part, action pressure conversion hole will go up cavity and play water section intercommunication.

As an improvement to the present invention, the wire diameter of the coil is selected between 0.05mm-0.12mm, the number of turns of the coil is determined by a predetermined coil resistance value, and generally, the number of turns of the coil 12 can be selected between 1500 turns-4000 turns.

The utility model discloses owing to adopted the outer end in action pressure conversion hole is equipped with and is used for sealing stifled ball with the plastic casing of electromagnetic drive component extends the structure of the one shot forming's stifled ball sealing portion that gets off, just so can guarantee that stifled ball can not be by the hydraulic pressure rush out when high.

Drawings

Fig. 1 is a schematic view of a cross-sectional exploded structure of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of an embodiment in the prior art.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the utility model can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 discloses a micro electromagnetic valve, which includes an electromagnetic driving member 1, a valve seat 2 with a water inlet section 21 and a water outlet section 22, and a diaphragm assembly 3, wherein a cavity 23 for accommodating the diaphragm assembly 3 is disposed on the valve seat 2, the diaphragm assembly 3 is disposed in the cavity 23, the electromagnetic driving member 1 is disposed on the valve seat 2 corresponding to the cavity 23, and the electromagnetic driving member 1 controls a state of the diaphragm assembly 3 in the cavity 23, so as to control on/off of a liquid flowing through the valve seat 2; the electromagnetic driving component 1 is characterized in that an action pressure conversion hole 32 is formed in the side face of the lower portion of the coil framework 11 of the electromagnetic driving component 1, the upper cavity and the water outlet section 22 are communicated through the action pressure conversion hole 32, a ball blocking 321 is arranged at the outer end of the action pressure conversion hole 32, and a ball blocking sealing portion 322 which is used for sealing the ball blocking 321 and formed in one step and extends from the plastic shell 4 of the electromagnetic driving component 1 is arranged at the outer end of the action pressure conversion hole 32. The ball stopper 321 in this embodiment may be a steel ball.

As an improvement of the present invention, the electromagnetic driving member 1 includes a coil 12 wound on the coil frame 11, and a magnetic conductive member 13, an iron core 112 for controlling the membrane module 3 is disposed in the central hole of the coil frame 11, a return spring 113 is disposed on the iron core 112, the magnetic conductive member 13 includes an upper end piece and a side piece, the side piece is close to or attached to the outer edge of the coil frame, and the upper end piece is close to or attached to the upper end face of the coil frame 11 and blocks the upper opening of the central hole; the plastic housing 4 is provided at the periphery of the electromagnetic drive member 1.

For the combination of the plastic shell 4 and the magnetic driving member 1, there are two ways, one way is to form an integral structure by injection molding with the electromagnetic driving member 1 after the magnetic driving member 1 is combined. In another embodiment, the electromagnetic driving member 1 is first injection-molded on the outer surface thereof, all the components constituting the electromagnetic driving member 1 are integrally injection-molded, and then the integrated electromagnetic driving member is fixedly disposed in the plastic housing 4. Preferably, the wire diameter of the coil 12 is selected between 0.05mm and 0.12mm, the number of turns of the coil is determined by a predetermined coil resistance value, and generally, the number of turns of the coil 12 is selected between 1500 turns and 4000 turns.

Utility model discloses close coil 12, coil skeleton 11 and magnetic conduction piece 13 in the magnetic drive component 1 as far as, make its volume reduce, but do not reduce magnetic field, can drive iron core 112 as usual, then, establish a plastic casing 4 that the volume is as little as possible again in magnetic drive component 1 to make the solenoid valve wholly reduce, but its flow does not change, and can also normally drive the work of iron core, really realized the miniaturation to the solenoid valve.

Preferably, the diaphragm assembly 3 divides the cavity 23 into an upper cavity and a lower cavity, the lower cavity comprises a water inlet section 21 and a water outlet section 22, the water outlet section 22 is connected with the main valve port 24, the diaphragm assembly 3 is provided with a pilot hole 31, and the pilot hole 31 communicates the upper cavity with the water inlet section 21. In order to prevent the operation pressure conversion hole 32 from leaking water, a second O-ring 7 is provided between the connection seat of the coil bobbin 11 and the valve seat 2.

In this embodiment, under the action of the return spring 113, the lower end of the iron core 112 plugs the operation pressure conversion hole 32, at this time, the pilot hole 31 can introduce the water in the water inlet section 21 into the upper cavity, so that the pressure in the upper cavity is greater than that of the lower cavity, and the water path is cut off, when the water path needs to be conducted, the coil 12 is energized, the coil 12 generates a magnetic field, the iron core 112 is lifted upwards, the return spring 133 is compressed, and the operation pressure conversion hole 32 is released, at this time, the water in the upper cavity flows into the water outlet section 22 from the operation pressure conversion hole 32, the pressure in the upper cavity is reduced, under the action of the water inlet pressure, the diaphragm assembly 3 floats upwards, and the water inlet section 21 is communicated with the water outlet section 22 through the main valve 24, so that normal water.

Preferably, in order to facilitate the connection between the magnetic conducting piece 13 and the coil framework 11, a connection fork is arranged at one end of the magnetic conducting piece 13, which is far away from the upper end plate, a groove is formed in the side wall of the lower portion of the coil framework 11, and the connection fork is clamped in the groove, so that the injection molding of the shell is facilitated.

Preferably, a magnetic conduction block 117 is disposed in the central hole of the coil bobbin 11 and closely attached to the upper end plate of the magnetic conduction member 13, the magnetic conduction block 117 is added to better guide the magnetic field to the upper end of the iron core 112, so as to facilitate lifting the iron core 112, and in order to prevent water leakage, a first O-ring is disposed between the magnetic conduction block 117 and the inner wall of the coil bobbin 11.

Preferably, a rubber cap 118 is disposed at the lower end of the iron core 112, and in this embodiment, the rubber cap 118 is used for sealing the operation pressure conversion hole 32.

Preferably, in order to facilitate the connection between the plastic housing 4 and the valve seat 2, a connection seat may be provided at a lower end of the plastic housing 4. In order to facilitate connection with the pipe fitting, two quick connectors 6 can be respectively arranged at two ends of the valve seat 2, and each quick connector 6 comprises a connector, a head cover and a third O-shaped sealing ring.

In the present invention, the stroke distance between the inlet end of the operation pressure converting hole 32 and the lower end of the iron core 112 is selected between 0.4 and 3 mm, the shorter the stroke distance of the iron core 112 is, the smaller the electric energy consumed by the same becomes, but the sensitivity of the solenoid valve is affected if the stroke distance is too short, and therefore, the stroke distance is preferably selected between 0.4 and 3 mm.

It should be noted that the detailed explanation of the above embodiments is only for the purpose of explaining the present invention so as to better explain the present invention, but these descriptions should not be construed as limiting the present invention for any reason, and in particular, each feature described in different embodiments may be arbitrarily combined with each other to constitute other embodiments, and these features should be understood as being applicable to any one embodiment and not limited to only the described embodiments, except for the explicit contrary description.

Claims

1. A miniature electromagnetic valve comprises an electromagnetic driving component (1), a valve seat (2) with a water inlet section (21) and a water outlet section (22) and a membrane component (3), wherein a cavity (23) for accommodating the membrane component (3) is arranged on the valve seat (2), the membrane component (3) is arranged in the cavity (23), the electromagnetic driving component (1) is arranged on the valve seat (2) corresponding to the cavity (23), and the electromagnetic driving component (1) controls the state of the membrane component (3) in the cavity (23) so as to control the connection or disconnection of liquid flowing through the valve seat (2); be equipped with action pressure conversion hole (32) on the coil skeleton (11) lower part side of electromagnetic drive component (1), action pressure conversion hole (32) will go up cavity and play water section (22) intercommunication the outer end in action pressure conversion hole (32) is equipped with a stifled ball (321), its characterized in that: the outer end of the action pressure conversion hole (32) is provided with a ball blocking sealing part (322) which is used for sealing the ball blocking (321) and extends down from the plastic shell (4) of the electromagnetic driving component (1) in one-step forming.

2. The micro electromagnetic valve according to claim 1, wherein: the electromagnetic driving component (1) comprises a coil (12) wound on a coil frame (11) and a magnetic conduction piece (13), wherein an iron core (112) used for controlling the membrane component (3) is arranged in a middle hole (111) of the coil frame (11), a return spring (113) is arranged on the iron core (112), the magnetic conduction piece (13) comprises an upper end piece (131) and a side piece (132), the side piece (132) is close to or attached to an outer edge (114) of the coil frame (11), the upper end piece (131) is close to or attached to an upper end face (115) of the coil frame (11) and blocks an upper opening of the middle hole (111); the plastic shell (4) is arranged on the periphery of the electromagnetic driving component (1).

3. The micro electromagnetic valve according to claim 1 or 2, characterized in that: the plastic shell (4) and the electromagnetic driving component (1) form an integrated structure in an injection molding mode.

4. The micro electromagnetic valve according to claim 1 or 2, characterized in that: and (2) forming an integrated electromagnetic driving component by injection molding on the outer side of the electromagnetic driving component (1), and then arranging the integrated electromagnetic driving component in a plastic shell (4).

5. The micro electromagnetic valve according to claim 2, wherein: the magnetism-conducting part (13) further comprises a second side piece (133) connected with the upper end piece (131), and the second side piece (133) and the side piece (132) are symmetrically arranged.

6. The micro electromagnetic valve according to claim 2, wherein: one end of the magnetic conduction piece (13) far away from the upper end piece (131) is provided with a connection fork (134), the side wall of the lower part of the coil framework (11) is provided with a groove (116), and the connection fork (134) is clamped in the groove (116).

7. The micro electromagnetic valve according to claim 2, wherein: and a magnetic conduction block (117) is arranged in the middle hole (111) of the coil framework (11) and clings to the upper end sheet (131) of the magnetic conduction piece (13).

8. The micro electromagnetic valve according to claim 2, wherein: the wire diameter of the coil (12) is selected from 0.05mm-0.12mm, and the number of turns of the coil is determined by the preset resistance value of the coil.

9. The micro electromagnetic valve according to claim 1 or 2, characterized in that: the diaphragm component (3) divides the cavity (23) into an upper cavity and a lower cavity, the lower cavity comprises a water inlet section (21) and a water outlet section (22), the water outlet section (22) is connected with the main valve port (24), a pilot hole (31) is formed in the diaphragm component (3), and the upper cavity is communicated with the water inlet section (21) through the pilot hole (31).

10. The micro electromagnetic valve according to claim 2, wherein: the stroke distance between the inlet end of the action pressure conversion hole (32) and the lower end of the iron core (112) is selected between 0.4 and 3 millimeters.