CN214743685U

CN214743685U - Pilot-operated type electromagnetic valve

Info

Publication number: CN214743685U
Application number: CN202120581653.9U
Authority: CN
Inventors: 游伟
Original assignee: Guangdong Yingsui Fire Technology Co ltd
Current assignee: Guangdong Yingsui Fire Technology Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-16
Anticipated expiration: 2031-03-22

Abstract

The utility model relates to the technical field of valves, and discloses a pilot-operated solenoid valve.A valve body is connected with a valve cover to form a valve cavity, a valve port for communicating a liquid inlet channel with a liquid outlet channel is arranged on the valve cavity, a main valve core capable of plugging the valve port comprises a valve plate, an outer wrapping film and an elastic outer edge film connected on the valve cavity, a liquid inlet hole is arranged on the elastic outer edge film, and a first elastic piece is supported between the valve cavity and the outer wrapping film; the valve body is provided with a first pilot channel communicated with the liquid outlet channel, and the valve cover is provided with a second pilot channel communicated with the first pilot channel and a third pilot channel used for communicating the second pilot channel with the valve cavity; the electromagnetic control assembly is arranged on the valve cover, a movable iron core of the electromagnetic control assembly is connected with the pilot valve core, the manual handle is connected with the movable iron core, and the electromagnetic control assembly and the manual handle can enable the pilot valve core to be separated or conduct the second pilot channel and the third pilot channel; the utility model discloses can realize electronic and manual opening and close, simple structure, main valve core processing are simple and the leakproofness is good.

Description

Pilot-operated type electromagnetic valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a guide's formula solenoid valve.

Background

At present, most of high-pressure electromagnetic valves applied to the market are pilot-operated electromagnetic valves, and the purpose of the high-pressure electromagnetic valves is to reduce the opening force of the electromagnetic valves; and when the power supply fails or the electromagnetic assembly of the electromagnetic valve fails, the valve cannot be manually opened, which brings great trouble to practical working application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can be electronic with manual opening and close, simple structure, main valve core processing are simple and the leakproofness is good, the pilot-operated formula solenoid valve that operational reliability is high.

In order to achieve the above object, the present invention provides a pilot-operated solenoid valve, comprising a valve body, a valve cover, a main valve element, a first elastic member, an electromagnetic control assembly and a manual handle, wherein a liquid inlet channel and a liquid outlet channel are respectively arranged at two ends of the valve body, the valve body is connected with the valve cover to form a valve cavity, a valve port for communicating the liquid inlet channel with the liquid outlet channel is arranged on the valve cavity, the main valve element comprises a valve plate facing the valve port, an outer wrapping film covering the valve plate, and an outer edge film extending around the outer wrapping film, a liquid inlet hole for communicating the valve cavity with the liquid inlet channel is arranged on the outer edge film, the outer wrapping film and the elastic outer edge film are made of rubber, the outer edge of the outer edge film is connected to the valve cavity, two ends of the first elastic member respectively abut against the top of the valve cavity and the outer wrapping film, the main valve core can seal and block the valve port; the valve body is provided with a first pilot channel communicated with the liquid outlet channel, the valve cover is provided with a second pilot channel communicated with the first pilot channel and a third pilot channel used for communicating the second pilot channel with the valve cavity, and the first pilot channel, the second pilot channel and the third pilot channel form a pilot flow channel; the electromagnetic control assembly is arranged on the valve cover, and a movable iron core of the electromagnetic control assembly is connected with the pilot valve core and drives the pilot valve core to separate or conduct the second pilot channel and the third pilot channel through the movable iron core; the manual handle is arranged on the valve cover, is connected with the movable iron core and can drive the movable iron core to move so as to drive the pilot valve core to separate or conduct the second pilot channel and the third pilot channel.

As a preferred scheme of the present invention, the manual handle includes a knob and an eccentric shifting block, a rotating shaft is connected between the knob and the eccentric shifting block, and an axis of the eccentric shifting block and an axis of the rotating shaft are not on the same straight line; the movable iron core is provided with a matching groove matched with the eccentric shifting block, and the movable iron core is jacked up or dropped down by the eccentric shifting block.

As the utility model discloses preferred scheme, first elastic component is the spring, the spring is the toper structure, the little head end of spring with the valve pocket is connected, the big head end of spring with main valve core connects.

As the preferred scheme of the utility model, outer envelope with outer fringe diaphragm integrated into one piece.

As the utility model discloses preferred scheme, the outward flange of outer fringe diaphragm presss from both sides tightly the valve body with between the fitting surface of valve gap.

As the utility model discloses preferred scheme, the valve body with be equipped with sealed waterline on the contact surface of outer fringe diaphragm.

As the utility model discloses preferred scheme, the valve gap with be equipped with sealed waterline on the contact surface of outer fringe diaphragm.

As the preferred scheme of the utility model, be equipped with on the outer fringe diaphragm and be used for the intercommunication first guide's passageway with the liquid hole of crossing of second guide's passageway.

As the utility model discloses preferred scheme, solenoid electric components include coil winding, quiet iron core and move the iron core, quiet iron core is fixed coil winding's inner chamber, it sets up to move the iron core activity the inner chamber of coil winding, move the iron core with be equipped with the second elastic component between the quiet iron core, the pilot valve case sets up move the bottom of iron core.

As a preferred embodiment of the present invention, the second elastic member is a spring.

The embodiment of the utility model provides a pilot-operated solenoid valve compares with prior art, and its beneficial effect lies in:

the utility model can move the movable iron core by electrifying the electromagnetic control assembly or rotating the manual handle, thereby driving the pilot valve core to move to lead the pilot flow channel to be conducted, leading the liquid in the valve cavity to flow out to the liquid outlet channel through the pilot flow channel, greatly reducing the pressure in the valve cavity due to the liquid flowing out in the valve cavity, and leading the liquid inlet channel to be more than the pressure of the valve cavity at the moment, and leading the liquid in the liquid inlet channel to prop open the main valve core to lead the liquid inlet channel to be communicated with the liquid outlet channel; the movable iron core can be moved by powering off the electromagnetic control assembly or rotating the manual handle, so that the pilot valve core is driven to move to cut off the pilot flow channel, the valve port of the main valve core is closed under the action of the first elastic piece, the liquid inlet channel is communicated with the valve cavity through the liquid inlet hole, and liquid cannot jack the main valve core due to the fact that the elasticity and the hydraulic pressure of the valve cavity on the first elastic piece are larger than the pressure of the liquid inlet channel; in addition, the main valve core wraps the valve plate in a rubber coating mode, so that the valve port can be effectively sealed, the sealing effect is reliable, and the processing is convenient and simple; it is visible, the utility model discloses can realize electronic and manual opening and close, simple structure, main valve core processing are simple and guarantee that the leakproofness is good, and operational reliability is high.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of a pilot-operated solenoid valve provided by the present invention;

in the figure, 1 is a valve body; 11 is a liquid inlet channel; 12 is a liquid outlet channel; 13 is a valve cavity; 14 is a valve port; 15 is a first pilot channel; 2 is a valve cover; 21 is a second pilot channel; 22 is a third pilot channel; 3 is a main valve core; 31 is a first elastic member; 32 is a liquid inlet hole; 4 is a pilot valve core; 5 is an electromagnetic control component; 51 is a coil; 52 is a static iron core; 53 is a movable iron core; 531 is a mating groove; 54 is a second elastic member; 6 is a manual handle; 61 is a knob; and 62 is an eccentric shifting block.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the pilot-operated electromagnetic valve according to the preferred embodiment of the present invention includes a valve body 1, a valve cover 2, a main valve element 3, a pilot valve element 4, a first elastic member 31, an electromagnetic control assembly 5, and a manual handle 6, wherein a liquid inlet channel 11 and a liquid outlet channel 12 are respectively disposed at two ends of the valve body 1, the valve body 1 is connected with the valve cover 2 to form a valve cavity 13, a valve port 14 for communicating the liquid inlet channel 11 with the liquid outlet channel 12 is disposed on the valve cavity 13, the main valve element 3 includes a valve plate facing the valve port 14, an outer covering film covering the valve plate, and an outer edge membrane extending around the outer covering film, a liquid inlet hole 32 for communicating the valve cavity with the liquid inlet channel is disposed on the outer edge membrane, the material of the outer covering film and the material of the outer edge membrane are both rubber, and the outer edge of the outer edge membrane is connected to the valve cavity 13, two ends of the first elastic element 31 respectively abut against the top of the valve cavity 13 and the top of the outer envelope, and the outer envelope valve plate coated on the main valve element 3 can seal and block the valve port 14;

a first pilot channel 15 communicated with the liquid outlet channel 12 is arranged on the valve body 1, a second pilot channel 21 communicated with the first pilot channel 15 and a third pilot channel 22 used for communicating the second pilot channel 21 with the valve cavity 13 are arranged on the valve cover 2, and the first pilot channel 15, the second pilot channel 21 and the third pilot channel 22 form a pilot flow channel;

the electromagnetic control assembly 5 is arranged on the valve cover 2, and a movable iron core 53 of the electromagnetic control assembly 5 is connected with the pilot valve core 4 and drives the pilot valve core 4 to partition or conduct the second pilot channel 21 and the third pilot channel 22 through the movable iron core 53;

the manual handle 6 is arranged on the valve cover 2, and the manual handle 6 is connected with the movable iron core 53 and can drive the movable iron core 53 to move so as to drive the pilot valve core 4 to cut off or conduct the second pilot channel 21 and the third pilot channel 22.

The utility model discloses can move movable iron core 53 through electrifying electromagnetic control assembly 5 or rotating manual handle 6 to drive the pilot valve core 4 to move and make the pilot flow channel switch on, make the liquid in the valve pocket 13 flow out to liquid outlet channel 12 through the pilot flow channel, because the liquid outflow in the valve pocket 13 makes the pressure in the valve pocket 13 reduce greatly, the pressure of inlet channel 11 is greater than the pressure of valve pocket 13 this moment, the liquid in the inlet channel 11 backs up main valve core 3, makes inlet channel 11 and liquid outlet channel 12 communicate; the movable iron core 53 can be moved by powering off the electromagnetic control assembly 5 or rotating the manual handle 6, so that the pilot valve core 4 is driven to move to block the pilot flow channel, the valve port 14 is closed by the main valve core 3 under the action of the first elastic piece 31, the liquid inlet channel 11 is communicated with the valve cavity 13 through the liquid inlet hole 32, and liquid cannot jack the main valve core 3 due to the fact that the elasticity of the valve cavity 13 on the first elastic piece 31 plus the hydraulic pressure is greater than the pressure of the liquid inlet channel 11; in addition, the main valve core 3 is wrapped on the valve plate in a rubber-coating mode, so that the valve port 14 can be effectively sealed, the sealing effect is reliable, and the processing is convenient and simple; it is visible, the utility model discloses can realize electronic and manual opening and close, simple structure, main valve core processing are simple and guarantee that the leakproofness is good, and operational reliability is high.

Illustratively, the manual handle 6 comprises a knob 61 and an eccentric shifting block 62, a rotating shaft is connected between the knob 61 and the eccentric shifting block 62, and the axis of the eccentric shifting block 62 is not in the same straight line with the axis of the rotating shaft; the movable iron core 53 is provided with a matching groove 531 matched with the eccentric shifting block 62, the movable iron core 53 can be jacked up or dropped down by the eccentric shifting block 62, manual opening and closing of the pilot-operated electromagnetic valve can be achieved, and the situation that the pilot-operated electromagnetic valve cannot be opened and closed electrically due to accidents is avoided.

Illustratively, the first elastic element 31 is a spring, the spring is in a conical structure, a small head end of the spring is connected with the valve cavity 13, a large head end of the spring is connected with the main valve element 3, and the spring in the conical structure can better adapt to changes of pressure and space, so that the control precision of the pilot-operated solenoid valve is further improved.

Illustratively, the outer envelope is integrally formed with the outer rim membrane, ensuring the tightness of main valve element 3.

To ensure the tightness of the valve chamber 13, the outer edge of the peripheral membrane is clamped between the mating surfaces of the valve body 1 and the valve cover 2. In this embodiment, the outer edge diaphragm is provided with a liquid passing hole for communicating the first pilot passage 15 and the second pilot passage 21, and the sealing property between the first pilot passage 15 and the second pilot passage 21 can be ensured.

Illustratively, a sealing waterline is arranged on the contact surface of the valve body 1 and the outer edge diaphragm, and a sealing waterline is arranged on the contact surface of the valve cover 2 and the outer edge diaphragm, so that the sealing effect of the pilot electromagnetic valve can be improved.

Illustratively, the electromagnetic control assembly 5 includes a coil winding 51, a stationary iron core 52 and the movable iron core 53, the stationary iron core 52 is fixed in an inner cavity formed by the coil winding 51, the movable iron core 53 is movably disposed in the inner cavity formed by the coil winding 51, a second elastic member 54 is disposed between the movable iron core 53 and the stationary iron core 52, the pilot valve element 4 is disposed at the bottom of the movable iron core 53, and the second elastic member 54 is preferably a spring; when the coil 51 is energized, the stationary iron core 52 has magnetic force to attract the movable iron core 53 to move upwards and compress the second elastic member 54, so that the pilot flow channel is conducted; when the coil 51 is powered off, the movable iron core 53 moves downwards under the action of the elastic force of the second elastic piece 54, so that the pilot valve core 4 cuts off the pilot flow channel; high working reliability is ensured.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A pilot-operated electromagnetic valve is characterized by comprising a valve body, a valve cover, a main valve core, a pilot valve core, a first elastic piece, an electromagnetic control assembly and a manual handle, wherein a liquid inlet channel and a liquid outlet channel are respectively arranged at two ends of the valve body, the valve body is connected with the valve cover to form a valve cavity, a valve port for communicating the liquid inlet channel with the liquid outlet channel is arranged on the valve cavity, the main valve core comprises a valve plate facing the valve port, an outer wrapping film wrapping the valve plate and an outer edge membrane extending on the periphery of the outer wrapping film, a liquid inlet hole for communicating the valve cavity with the liquid inlet channel is arranged on the outer edge membrane, the outer wrapping film and the outer edge membrane are both made of rubber, the outer edge of the outer edge membrane is connected to the valve cavity, two ends of the first elastic piece respectively abut against the tops of the valve cavity and the outer wrapping film, the main valve core can seal and block the valve port;

the valve body is provided with a first pilot channel communicated with the liquid outlet channel, the valve cover is provided with a second pilot channel communicated with the first pilot channel and a third pilot channel used for communicating the second pilot channel with the valve cavity, and the first pilot channel, the second pilot channel and the third pilot channel form a pilot flow channel;

the electromagnetic control assembly is arranged on the valve cover, and a movable iron core of the electromagnetic control assembly is connected with the pilot valve core and drives the pilot valve core to separate or conduct the second pilot channel and the third pilot channel through the movable iron core;

the manual handle is arranged on the valve cover, is connected with the movable iron core and can drive the movable iron core to move so as to drive the pilot valve core to separate or conduct the second pilot channel and the third pilot channel.

2. The pilot-operated solenoid valve according to claim 1, wherein the manual handle comprises a knob and an eccentric shifting block, a rotating shaft is connected between the knob and the eccentric shifting block, and the axis of the eccentric shifting block and the axis of the rotating shaft are not on the same straight line; the movable iron core is provided with a matching groove matched with the eccentric shifting block, and the movable iron core is jacked up or dropped down by the eccentric shifting block.

3. The pilot operated solenoid valve of claim 1 wherein said first resilient member is a spring, said spring being of a conical configuration, a small head end of said spring being connected to said valve chamber and a large head end of said spring being connected to said main poppet.

4. The pilot operated solenoid valve of claim 1 wherein said outer envelope is integrally formed with said peripheral diaphragm.

5. The pilot operated solenoid valve as set forth in claim 1 wherein an outer edge of said peripheral diaphragm is clamped between mating surfaces of said valve body and said valve cover.

6. The pilot operated solenoid valve of claim 5 wherein a seal water line is provided on the interface of said valve body and said peripheral diaphragm.

7. The pilot operated solenoid valve of claim 5 wherein a sealing waterline is provided on the interface of the valve cover and the peripheral diaphragm.

8. The pilot-operated solenoid valve according to claim 1, wherein the outer edge diaphragm is provided with a liquid passing hole for communicating the first pilot passage and the second pilot passage.

9. The pilot-operated electromagnetic valve according to claim 1, wherein the electromagnetic control assembly includes a coil winding, a stationary core and the movable core, the stationary core is fixed in the inner cavity of the coil winding, the movable core is movably disposed in the inner cavity of the coil winding, a second elastic member is disposed between the movable core and the stationary core, and the pilot valve core is disposed at the bottom of the movable core.

10. The pilot operated solenoid valve as claimed in claim 9, wherein said second resilient member is a spring.