CN210423901U

CN210423901U - Novel explosion-proof electromagnetic valve

Info

Publication number: CN210423901U
Application number: CN201920806751.0U
Authority: CN
Inventors: 张一帆
Original assignee: Zhuozhou Youvalve Automation Equipment Co Ltd
Current assignee: Zhuozhou Youvalve Automation Equipment Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-28
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a novel explosion-proof electromagnetic valve, which comprises a valve body, wherein the middle part of the valve body is provided with a baffle plate which divides the interior of the valve body into an inlet cavity and an outlet cavity; a protective shell is arranged above the valve body, a static iron core is arranged at the top of the protective shell, a coil is wound on the static iron core, the lower end of the static iron core is fixedly connected with the upper end of a reset spring, the lower end of the reset spring is fixedly connected with the upper end of a valve core, a first through hole for the valve core to pass through is formed in a top plate of the valve body, a first sealing ring in sliding fit with the outer edge of the valve core is arranged in the first through hole, and an overflowing hole matched with the lower end of the valve core is formed in a partition plate; when the utility model discloses a dog plays the effect in the below in discharge orifice that the shutoff was crossed when the valve was in the closed condition, and the condition of avoiding reset spring compression to lead to sealing not tight takes place on the unable direct action of medium pressure in the oral cavity case.

Description

Novel explosion-proof electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field especially relates to a novel explosion-proof solenoid valve.

Background

The electromagnetic valve is a common valve component for controlling the on-off of a pipeline, the on-off of the valve is controlled mainly through the power-on state of the electromagnet, when the electromagnet is powered on, the valve core in the valve body is attracted to move towards the electromagnet, the valve is opened when the valve path is smooth, when the electromagnet is powered off, the attraction force on the valve core is lost, and the valve core is reset under the action of the reset spring to block the valve path, so that the valve is closed.

When the existing electromagnetic valve is in a closed state, a medium in a valve cavity can generate certain pressure on a valve core, and when the medium pressure is overlarge, the elasticity of a spring cannot keep the valve core stable, so that the sealing function of the valve core on a valve circuit is invalid, the medium is leaked, and the function of the valve is invalid.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel explosion-proof solenoid valve solves the technical problem who mentions in the above-mentioned background art.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a novel explosion-proof electromagnetic valve, which comprises a valve body, wherein a clapboard is arranged in the middle of the valve body, and divides the interior of the valve body into an inlet cavity and an outlet cavity;

a protective shell is arranged above the valve body, a static iron core is arranged at the top of the protective shell, a coil is wound on the outer side of the static iron core, the lower end of the static iron core is fixedly connected with the upper end of a return spring, the lower end of the return spring is fixedly connected with the upper end of a valve core, a first through hole for the valve core to pass through is formed in a top plate of the valve body, a first sealing ring in sliding fit with the outer edge of the valve core is arranged in the first through hole, and an overflowing hole matched with the lower end of the valve core is formed in the partition plate;

the below of valve body is provided with the cushion chamber, the below of cushion chamber is provided with adjust cylinder, adjust cylinder's telescopic link runs through the cushion chamber and extends to the inside in import chamber, the confession has been seted up to the bottom plate in cushion chamber the second through-hole that adjust cylinder's telescopic link passed, be provided with in the second through-hole with adjust cylinder's telescopic link sliding fit's second sealing washer, the confession has been seted up to the bottom plate of valve body the third through-hole that adjust cylinder's telescopic link passed, just the third through-hole with reserve between the perisporium of adjust cylinder's telescopic link and have certain clearance, adjust cylinder's telescopic link's tip is provided with the dog, the diameter of dog is greater than the discharge orifice with the internal diameter of third through-hole.

Furthermore, the lower end of the valve core is in a circular truncated cone shape, and the overflowing hole is provided with a circular truncated cone hole matched with the lower end of the valve core.

Further, the outside cover of dog is equipped with the third sealing washer, the below of baffle is provided with first spacing boss, first spacing boss seted up with the first spacing hole of the outer fringe looks adaptation of third sealing washer, the top of the bottom plate of valve body is provided with the spacing boss of second, the spacing boss of second seted up with the spacing hole of second of the outer fringe looks adaptation of third sealing washer.

Furthermore, the buffer cavity is communicated with the outlet cavity through a return pipe, and a micro pump is arranged on the return pipe.

Compared with the prior art, the utility model discloses a beneficial technological effect:

when the valve of the utility model is in a closed state, the adjusting cylinder extends to enable the stop block to abut against the inside of the first limiting hole, on one hand, the stop block plays a role in blocking the overflowing hole below the overflowing hole, and the medium pressure in the inlet cavity can not directly act on the valve core, so that the situation that the sealing is not tight due to the compression of the reset spring is avoided; on the other hand, after the valve is closed, the medium can enter the buffer cavity through the third through hole, so that the phenomenon that the medium is accumulated in the valve body under the action of fluid inertia to generate large pressure to damage the valve body after the valve is closed is avoided, and the effect of buffering the pressure of the valve cavity is achieved.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

Fig. 1 is a schematic structural view of the valve of the present invention when opened;

fig. 2 is a schematic structural view of the valve of the present invention when closed;

description of reference numerals: 1. a valve body; 2. a partition plate; 3. an inlet chamber; 4. an outlet chamber; 5. a protective shell; 6. A static core; 7. a coil; 8. a return spring; 9. a valve core; 10. a first seal ring; 11. an overflowing hole; 12. a buffer chamber; 13. an adjusting cylinder; 14. a second seal ring; 15. a third through hole; 16. a stopper; 17. A third seal ring; 18. a first limit boss; 19. a first limit hole; 20. a second limit boss; 21. A second limiting hole; 22. a return pipe; 23. a micro pump.

Detailed Description

As shown in fig. 1-2, a novel explosion-proof electromagnetic valve comprises a valve body 1, wherein a partition plate 2 is installed in the middle of the valve body 1, and the partition plate 2 divides the interior of the valve body 1 into an upper inlet cavity 3 and a lower outlet cavity 4.

Protecting crust 5 is installed to the top of valve body 1, the top fixed mounting of protecting crust 5 has static iron core 6, the winding of the outer aid of static iron core 6 has coil 7, coil 7 and external power electric connection. The lower end of the static iron core 6 is fixedly connected with the upper end of a return spring 8, and the lower end of the return spring 8 is fixedly connected with the upper end of a valve core 9. A first through hole for the valve core 9 to pass through is formed in a top plate of the valve body 1, and a first sealing ring 10 in sliding fit with the outer edge of the valve core 9 is arranged in the first through hole. The partition plate 2 is provided with an overflowing hole 11 matched with the lower end of the valve core 9, in this embodiment, the lower end of the valve core 9 is specifically set to be in a circular truncated cone shape, and the overflowing hole 11 is provided with a circular truncated cone hole matched with the lower end of the valve core.

The lower part of the valve body 1 is provided with a buffer cavity 12, the lower part of the buffer cavity 12 is provided with an adjusting cylinder 13, and an expansion rod of the adjusting cylinder 13 penetrates through the buffer cavity 12 and extends to the inside of the inlet cavity 3. A second through hole for the telescopic rod of the adjusting cylinder 13 to pass through is formed in the bottom plate of the buffer cavity 12, and a second sealing ring 14 in sliding fit with the telescopic rod of the adjusting cylinder 13 is arranged in the second through hole. The bottom plate of the valve body 1 is provided with a third through hole 15 for the telescopic rod of the adjusting cylinder 13 to pass through, and a certain gap is reserved between the third through hole 15 and the peripheral wall of the telescopic rod of the adjusting cylinder 13, so that a medium can conveniently enter the buffer cavity through the third through hole 15.

The end part of the telescopic rod of the adjusting cylinder 13 is provided with a stop block 16, and the diameter of the stop block 16 is larger than the inner diameters of the overflowing hole 11 and the third through hole 15. The outside cover of dog 16 is equipped with third sealing washer 17, the below of baffle 2 is provided with first spacing boss 18, first spacing boss 18 seted up with the first spacing hole 19 of the outer fringe looks adaptation of third sealing washer 17, the top of the bottom plate of valve body 1 is provided with the spacing boss 20 of second, the spacing boss 20 of second seted up with the spacing hole 21 of the second of the outer fringe looks adaptation of third sealing washer 17.

The buffer cavity 12 is communicated with the outlet cavity 4 through a return pipe 22, and the return pipe 22 is provided with a micro pump 2.

As shown in figure 1, the valve is in an open state, and the coil is electrified to fix the iron core with magnetism, so that the valve core is attracted to move upwards, the overflowing hole is unblocked, and the medium flows into the outlet cavity from the inlet cavity. Meanwhile, the adjusting cylinder is in a contraction state, and the stop block is positioned in the second limiting hole to prevent the medium from entering the buffer cavity.

As shown in fig. 2, the valve is in a closed state, at this time, the coil is powered off, the iron core loses magnetism, and no longer generates an attraction effect on the valve core, and the lower end of the valve core enters the flow through hole under the action of the return spring so as to block the flow through hole, so that the medium is prevented from flowing into the outlet cavity from the inlet cavity. Meanwhile, the extension of the air cylinder is adjusted, so that the stop block is abutted against the inside of the first limiting hole, on one hand, the stop block plays a role in blocking the overflowing hole below the overflowing hole, the medium pressure in the inlet cavity cannot directly act on the valve core, and the situation that the sealing is not tight due to the compression of the reset spring is avoided; on the other hand, after the valve is closed, the medium can enter the buffer cavity through the third through hole, so that the phenomenon that the medium is accumulated in the valve body under the action of fluid inertia to generate large pressure to damage the valve body after the valve is closed is avoided, and the effect of buffering the pressure of the valve cavity is achieved.

When the valve is opened again, the coil is electrified, the adjusting cylinder is reset and contracted, and meanwhile, the micro pump is in an opening state, so that the medium accumulated in the buffer cavity is discharged into the outlet cavity through the return pipe.

Additionally, the utility model discloses still be provided with the controller, the power, the adjust the actuating cylinder and the micropump of coil all with controller electric connection, programmable logic controller is specifically chooseed for use to the controller to reach the control of coordinating in unison to each electrical component. The control program of the controller controls the related execution element to perform the corresponding action command, which is a mature and conventional technical means in the field, and the specific principle and the circuit connection relationship thereof are not described in detail in this specification.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a novel explosion-proof solenoid valve which characterized in that: the valve comprises a valve body (1), wherein a partition plate (2) is arranged in the middle of the valve body (1), and the partition plate (2) divides the interior of the valve body (1) into an inlet cavity (3) and an outlet cavity (4);

a protective shell (5) is arranged above the valve body (1), a static iron core (6) is arranged at the top of the protective shell (5), a coil (7) is wound on the static iron core (6), the lower end of the static iron core (6) is fixedly connected with the upper end of a return spring (8), the lower end of the return spring (8) is fixedly connected with the upper end of a valve core (9), a first through hole for the valve core (9) to pass through is formed in a top plate of the valve body (1), a first sealing ring (10) in sliding fit with the outer edge of the valve core (9) is arranged in the first through hole, and an overflowing hole (11) matched with the lower end of the valve core (9) is formed in the partition plate (2);

the below of valve body (1) is provided with cushion chamber (12), the below of cushion chamber (12) is provided with adjust cylinder (13), the telescopic link of adjust cylinder (13) runs through cushion chamber (12) and extend to the inside of import chamber (3), the confession has been seted up to the bottom plate of cushion chamber (12) the second through-hole that the telescopic link of adjust cylinder (13) passed, be provided with in the second through-hole with telescopic link sliding fit's of adjust cylinder (13) second sealing washer (14), the confession has been seted up to the bottom plate of valve body (1) third through-hole (15) that the telescopic link of adjust cylinder (13) passed, just third through-hole (15) with it has certain clearance to reserve between the perisporium of the telescopic link of adjust cylinder (13), the tip of the telescopic link of adjust cylinder (13) is provided with dog (16), the diameter of dog (16) is greater than through-hole (11) with the internal diameter of third through-hole (15) .

2. The novel explosion-proof solenoid valve of claim 1, wherein: the lower end of the valve core (9) is in a circular truncated cone shape, and the overflowing hole (11) is provided with a circular truncated cone hole matched with the lower end of the valve core.

3. The novel explosion-proof solenoid valve of claim 1, wherein: the outside cover of dog (16) is equipped with third sealing washer (17), the below of baffle (2) is provided with first spacing boss (18), first spacing boss (18) seted up with first spacing hole (19) of the outer fringe looks adaptation of third sealing washer (17), the top of the bottom plate of valve body (1) is provided with the spacing boss of second (20), the spacing boss of second (20) seted up with the spacing hole of second (21) of the outer fringe looks adaptation of third sealing washer (17).

4. The novel explosion-proof solenoid valve of claim 1, wherein: the buffer cavity (12) is communicated with the outlet cavity (4) through a return pipe (22), and a micro pump (23) is arranged on the return pipe (22).