CN214368089U

CN214368089U - Electromagnetic valve with manual emergency switch

Info

Publication number: CN214368089U
Application number: CN202021772987.6U
Authority: CN
Inventors: 蒙冬强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-10-08
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to a take manual emergency switch solenoid valve. The electromagnetic valve comprises a valve body, a piston with a central through hole, a movable iron core, a static iron core, a magnetism isolating pipe, a movable iron core connecting rod, a stud and a coil, wherein an A cavity and a C cavity are formed in the valve body through a baffle, a vertical B cavity is arranged at the upper ends of the A cavity and the C cavity, the piston is arranged in the B cavity and covers the upper end of the C cavity, the movable iron core is arranged at the upper end of the piston, the lower end of the magnetism isolating pipe is fixed with the B cavity, the static iron core is welded in the magnetism isolating pipe, the magnetism isolating pipe and the stud form two cavities through the static iron core, the two cavities are sealed through a sealing ring and the movable iron core connecting rod of the central through hole of the static iron core, the coil is arranged outside the magnetism isolating pipe, the lower end of the stud is in threaded connection with the upper end of the static iron core, a knob is connected on the stud in a screwed mode, a stud pin is inserted in the upper end of the knob, the movable iron core connecting rod penetrates through the stud pin, the stud, the static iron core and the spring and the movable iron core are fixed.

Description

Electromagnetic valve with manual emergency switch

Technical Field

The utility model relates to a solenoid valve.

Background

The electromagnetic valve is industrial equipment controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, is not limited to hydraulic pressure and pneumatic pressure, is commonly used for adjusting the direction, flow, speed and other parameters of a medium in an industrial control system, can be matched with different circuits to realize expected control, and can ensure the precision and flexibility of the control.

The existing common electromagnetic valve comprises a coil, a valve body, a piston, a movable iron core, a static iron core, a spring and a magnetism isolating pipe, the coil is arranged at the upper end of the valve body, three cavities, namely an A cavity, a B cavity and a C cavity, are arranged in the valve body, wherein the lower side of the valve body at the positions of the cavity A and the cavity C is a lower cavity, the upper side of the valve body is a cavity B, a baffle is fixed in the valve body between the cavity A and the cavity C to separate the A, C cavities, the upper end of the cavity C extends horizontally towards the baffle plate side to form a stop block, so that the piston can be supported by the baffle plate and the stop block, the magnetism isolating pipe is inserted at the upper end of the cavity B, the piston is in a step shape, a through hole penetrating the piston is arranged in the middle of the piston, the through hole forms a cavity D, the lower end of the movable iron core is provided with sealing rubber, and the movable iron core is arranged above the piston, the static iron core is welded in the magnetism isolating pipe, and the spring is placed between the movable iron core and the static iron core.

The working principle of the existing electromagnetic valve is as follows: when the coil is powered off, the movable iron core is under the action of the spring force, the lower end face of the movable iron core is attached to the upper end face of the piston, the sealing rubber on the lower end face of the movable iron core blocks the through hole of the piston, the piston is pressed down to enable the lower end face of the piston to seal the cavity C, the medium in the valve is left in the cavity A and the cavity B, the piston is in a closed state under the combined action of the spring force and the medium pressure in the cavity A, B, the medium in the cavity A cannot flow into the cavity C, when the coil is powered on, the coil generates a magnetic field in the magnetism isolating pipe assembly to enable the movable iron core and the static iron core to generate magnetic attraction, when the magnetic force generated by the attraction of the two is greater than the spring force and the pressure of the medium in the cavity A, B, the lower end face of the movable iron core is separated from the upper end face of the piston, the medium in the cavity A and the cavity B of the valve body flows downwards through the through hole D in the piston to flow into the cavity C of the valve, and simultaneously the pressure generated by the medium in the cavity C pushes the piston upwards to open the piston, the cavity B and the cavity C are communicated, the valve is opened, and the medium can flow from the cavity A to the cavity C.

At present, solenoid valve operating pressure grade is higher, the valve required magnetic force when opening is big more, the coil size that provides magnetic force is just big more, the event is used for the high pressure, solenoid valve often structure under the large-traffic environment is complicated, high in production cost, this type of solenoid valve is if just can't open or closed operation under the state that has a power failure simultaneously, this condition comparatively unchangeable and cause the condition of harm when just causing the use, the event still increases manual switch device on a lot of solenoid valves now, this type of solenoid valve of taking manual switch device increases handle control valve's switch on the valve body basically, just so cause the structure complicacy of valve body, the processing cost of valve body has been increased.

SUMMERY OF THE UTILITY MODEL

In view of the defect that current solenoid valve exists, the utility model aims to solve the technical problem that: the electromagnetic valve has the advantages of simple structure, small coil size, low production cost and physical energy conservation; the electromagnetic valve also needs to have the function of opening and closing by a flashlight.

In order to achieve the above object, according to one aspect of the present invention, the present invention is realized by the following technical measures: a solenoid valve with a manual emergency switch, comprising: the electromagnetic valve comprises a valve body, a piston with a central through hole, a movable iron core, a static iron core, a magnetism isolating pipe, a movable iron core connecting rod, a stud and a coil, wherein a horizontal cavity and a vertical cavity are arranged in the valve body, a baffle is arranged in the horizontal cavity to form a cavity A and a cavity C, the vertical cavity is a cavity B and is communicated with the horizontal cavity, the piston is arranged in the cavity B and covers an opening at the upper end of the cavity C, a central through hole is formed in the center of the piston, the movable iron core is arranged at the upper end of the piston and is used for sealing the central through hole of the piston, the lower end of the magnetism isolating pipe is fixed with the cavity B, the static iron core is welded in the magnetism isolating pipe, and a spring is arranged between the static iron core and the movable iron core, the coil is arranged on the outer side of the magnetism isolating pipe. The lower end of the stud is further in threaded connection with the upper end of the static iron core, a manual knob is in threaded connection with the stud, a stud pin is inserted into the upper end of the manual knob, and the movable iron core connecting rod penetrates through the stud pin, the stud, the static iron core and the spring and then is fixed with the movable iron core.

This take manual emergency switch solenoid valve has central through-hole through having quiet iron core design, when moving the iron core connecting rod and running through quiet iron core center through-hole sealing washer and sealing, can release the magnetic isolation outside the most pressure that the inside medium of magnetic isolation pipe was applyed to moving the iron core, reduce the medium to the pressure of moving the iron core, the coil only need provide less magnetic force like this makes iron core and quiet iron core actuation, the medium in valve body A chamber and the B chamber passes through-hole D on the piston and flows down, flow to the C chamber of valve, the pressure that the medium in the C chamber produced upwards backs up the piston open simultaneously, make B chamber and C chamber intercommunication, the valve is opened, the medium can flow to the C chamber from the A chamber.

Furthermore, the electromagnetic valve with the manual emergency switch also comprises a stud, a manual knob, a stud pin and a movable iron core connecting rod, the stud is hollow, the upper end of the stud is vertically provided with a moving groove, the manual knob is screwed on the stud and is positioned at the lower end of the moving groove, the screw pin is inserted in the moving groove, the movable iron core connecting rod passes through the screw pin, the screw bolt, the static iron core and the spring and then is fixed with the movable iron core, the design can lead the movable iron core connecting rod to draw the movable iron core to move upwards by using the manual knob when the coil of the electromagnetic valve is burnt out and can not work, thereby realizing the effect of opening the valve, thus, the structure of the valve body is simpler, the manufacturing cost of the valve body is greatly reduced, and the structure of the magnetism isolating pipe is improved, the valve can be easily opened by using a manual mode, and the condition that the high-pressure valve cannot be opened by a manual switch can be avoided.

Furthermore, a gasket is arranged below the stud, a sealing ring is arranged on a central through hole of the static iron core, the gasket is pressed when the stud is screwed with the upper end of the static iron core in a threaded manner, the gasket fixes the sealing ring on the central through hole of the static iron core, and the magnetic isolation tube and the stud are divided into an upper cavity and a lower cavity after the sealing ring is sealed with the movable iron core connecting rod. The design structure is more reasonable, and the sealing performance is better.

Furthermore, one end of the movable iron core connecting rod is fixedly connected with the movable iron core in the magnetism isolating pipe, the other end of the movable iron core connecting rod is arranged outside the magnetism isolating pipe, and the movable iron core can move up and down simultaneously when the movable iron core connecting rod penetrates through a sealing ring of a central through hole of the static iron core to seal. The design can release most of pressure applied to the movable iron core by the medium in the magnetism isolating pipe to the outside of the magnetism isolating pipe, and reduces the pressure of the medium to the movable iron core, so that the coil only needs to provide smaller magnetic force to attract the movable iron core and the static iron core. The movable iron core connecting rod outside the magnetic isolation pipe can be pulled by the manual device to move up and down, and the electromagnetic valve can be opened and closed manually.

Compared with the prior art, the utility model has the advantages of: the valve with high pressure and large flow is opened at low power, and meanwhile, the valve has the function of manual opening, is energy-saving and environment-friendly, and greatly reduces the electricity consumption.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic diagram of a solenoid valve with a manual emergency switch according to the present invention.

Fig. 2 is the valve body half-section structure schematic diagram of the utility model.

Description of reference numerals: 1. a valve body; 2. a piston; 3. a movable iron core; 4. a stationary iron core; 5. a magnetism isolating pipe; 6. a coil; 7. a cavity A; 8. a cavity B; 9. a cavity C; 10. a baffle plate; 11. a stop block; 12. a spring; 13. a stud; 14. a manual knob; 15. a stud pin; 16. a movable iron core connecting rod; 17. a moving groove; 18. a nut; 19. a gasket; 20. a piston central through hole; 21. a central through hole of the static iron core; 22. a gasket; 23. and (5) sealing rings.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", 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 simplicity of description, and do not indicate or imply that the device or element 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.

Example 1

Referring to fig. 1 and 2, the solenoid valve with a manual emergency switch provided in this embodiment includes a valve body 1, a piston 2, a movable iron core 3, a magnetism isolating pipe 5, a stud 13, a manual knob 14, a stud pin 15, a movable iron core connecting rod 16 and a coil 6, wherein the valve body 1 is horizontally and vertically provided with a cavity hole, a baffle 10 is fixed in the valve body 1 at the lower end of the vertical cavity hole, i.e. the B cavity 8, the baffle 10 divides the horizontal cavity hole into an a cavity 7 and a C cavity 9, a resisting block 11 horizontally extends leftwards from the right side of the upper end of the C cavity 9, a sealing rubber ring is fixed on the lower end surface of the piston 2 and is attached between the baffle 10 and the resisting block 11, so that the piston 2 seals the upper end of the C cavity 9, a central through hole is formed in the center of the piston 2, the magnetism isolating pipe 5 is a stepped pipe, a stationary iron core 4 is welded in the center of the magnetism isolating pipe 5, a sealing ring 23 is arranged above the central through hole 21 of the stationary iron core, a gasket 22 is arranged below the stud 13, the gasket 22 is pressed when the stud 13 is screwed with the upper end of the static iron core 4, the gasket 22 fixes a sealing ring 23, the sealing ring 23 is sealed with a movable iron core connecting rod 16 to divide the magnetism isolating pipe 5 and the stud 13 into an upper cavity and a lower cavity, the lower end of the magnetism isolating pipe 5 is screwed with the upper end of the cavity B8, the lower end of the static iron core 4 is pressed with the movable iron core 3 through a spring 12, the movable iron core 3 is arranged at the upper end of the piston 2, the lower end face of the movable iron core 3 is provided with sealing rubber for sealing a central through hole 20 of the piston, the movable iron core 3 is in clearance fit with the inner hole of the magnetism isolating pipe, the coil 6 is sleeved outside the magnetism isolating pipe 5, the lower end of the stud 13 is screwed with a nut 18, the lower end of the nut 18 is a gasket 19, the stud 13 is screwed with the upper end of the static iron core 4, the gasket 19 can fix the coil 6 through rotating the nut 18, the upper end of the stud 13 is provided with a vertical moving groove 17, the manual knob 14 is screwed on the stud 13 and is arranged at the lower end of the moving groove 17, the stud pin 15 penetrates through the moving groove 17, the movable iron core connecting rod 16 penetrates through the stud pin 15, the stud 13, the static iron core 4, the gasket 22, the sealing ring 23, the static iron core central through hole 21 and the spring 12 and then is fixed with the movable iron core 3, the movable iron core connecting rod 16 can follow the movable iron core 3 to move up and down simultaneously when the sealing ring 23 is used for sealing, and the sealing ring is arranged at the lower end of the magnetism isolating pipe 5 to seal the connecting position of the magnetism isolating pipe 5 and the valve body 1.

By adopting the electromagnetic valve with the structure, because the static iron core central through hole 21 is arranged on the static iron core 4, when the movable iron core connecting rod 16 passes through the sealing ring 23 of the static iron core central through hole 21 for sealing, one end of the movable iron core connecting rod 16 is fixed with the movable iron core 3 in the magnetism isolating pipe 5, and the other end is arranged outside the magnetism isolating pipe 5, most of the pressure of the medium in the magnetism isolating pipe 5 to the movable iron core 3 can be released to the outside of the magnetism isolating pipe 5, so that the pressure of the medium to the movable iron core 3 is reduced, the coil 6 only needs to provide small magnetic force to attract the movable iron core 3 and the static iron core 4, the medium in the A cavity 7 and the B cavity 8 flows downwards through the through hole D on the piston 2 and flows into the C cavity 9 of the valve, meanwhile, the pressure generated by the medium in the C cavity 9 pushes the piston 2 upwards, so that the B cavity 8 is communicated with the C cavity 9, the valve is opened, and the medium can flow from the A cavity 7 to the C cavity 9, thereby realizing the opening of high pressure with small magnetic force, The effect of large-traffic valve, when coil 6 burns out unable during operation, rotatable manual knob 14 jack-up stud 15, stud 15 jack-up moves iron core connecting rod 16 and is pulling and moving iron core 3 upward movement, realize the effect that the valve was opened, when needs manual shut-off valve, the manual knob of counter rotation 14, move iron core 3 and reset down under the effort of spring 12, move iron core connecting rod 16 and drive stud 15 simultaneously and follow and move iron core 3 and move down, realize manual shut-off valve. Due to the improvement of the structure of the magnetism isolating pipe assembly, the valve can be opened and closed easily in a manual mode, and the situation that the high-pressure valve cannot be opened by a manual switch can be avoided.

To sum up the solenoid valve produces magnetic force and is decided by the size of solenoid valve coil, and the solenoid valve that this embodiment provided can reduce the required coil size of solenoid valve by very big degree through the structural design to magnetism proof pipe subassembly, reduces the manufacturing cost of coil, reduces the required electric energy of valve that needs to open simultaneously, reduces the power cost of using by a wide margin, reaches the energy-conserving effect of physics.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various changes and modifications may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve with a manual emergency switch, comprising: the electromagnetic valve comprises a valve body, a piston with a central through hole, a movable iron core, a static iron core, a magnetism isolating pipe, a movable iron core connecting rod, a stud and a coil, wherein a horizontal cavity and a vertical cavity are arranged in the valve body, a baffle is arranged in the horizontal cavity to form a cavity A and a cavity C, the vertical cavity is a cavity B and is communicated with the horizontal cavity, the piston is arranged in the cavity B and covers an opening at the upper end of the cavity C, a central through hole is formed in the center of the piston, the movable iron core is arranged at the upper end of the piston and is used for sealing the central through hole of the piston, the lower end of the magnetism isolating pipe is fixed with the cavity B, the static iron core is welded in the magnetism isolating pipe, and a spring is arranged between the static iron core and the movable iron core, the coil is arranged on the outer side of the magnetism isolating pipe.

2. The electromagnetic valve with the manual emergency switch according to claim 1, further comprising a stud, a manual knob, a stud pin and a movable iron core connecting rod, wherein the stud is hollow, a moving groove is vertically formed in the middle upper end of the stud, the manual knob is screwed on the stud and located at the lower end of the moving groove, the stud pin is inserted into the moving groove, and the movable iron core connecting rod penetrates through the stud pin, the stationary iron core and the spring and then is fixed with the movable iron core.

3. The electromagnetic valve with the manual emergency switch according to claim 1, wherein a gasket is arranged below the stud, a sealing ring is arranged on a central through hole of the static iron core, the gasket is pressed when the stud is screwed with the upper end of the static iron core, the gasket fixes the sealing ring on the central through hole of the static iron core, and the magnetic isolation pipe and the stud are divided into an upper cavity and a lower cavity after the sealing ring is sealed with the connecting rod of the movable iron core.

4. The electromagnetic valve with the manual emergency switch according to claim 3, wherein one end of the movable iron core connecting rod is fixedly connected with the movable iron core in the magnetic isolation tube, and the other end of the movable iron core connecting rod is arranged outside the magnetic isolation tube, so that the movable iron core can move up and down simultaneously when the movable iron core connecting rod penetrates through a sealing ring of a central through hole of the static iron core for sealing.