CN214579026U

CN214579026U - Pilot-operated speed-adjustable electromagnetic safety valve

Info

Publication number: CN214579026U
Application number: CN202120226086.5U
Authority: CN
Inventors: 陈国麒
Original assignee: Zhangjiagang Leikang Precision Machinery Co ltd
Current assignee: Zhangjiagang Leikang Precision Machinery Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-11-02
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a pilot-operated formula speed adjustable electromagnetism safety valve, including valve body, valve gap and case, the upper end of valve gap is provided with the coil pack, one side fixedly connected with control mechanism of coil pack, the inside of coil pack is provided with separates the magnetism subassembly, the lower extreme fixed mounting who separates the magnetism subassembly has the iron core spring, the lower extreme fixed mounting of iron core spring has the iron core subassembly, be provided with the sealing washer between valve gap and the coil pack, the lower surface of valve gap is provided with the case through diaphragm spring. The sealing washer that sets up between valve gap and the coil pack can effectually prevent to take place to soften when high temperature, and guide's formula electromagnetism safety valve is at the during operation, along with coil pack's continuous circular telegram, coil pack can produce the heat, and the heat can spread on the sealing washer of coil pack and the contact department of valve body internal perisporium, and the sealing washer is difficult for taking place to soften, still can keep good sealed effect, the better demand that satisfies production work.

Description

Pilot-operated speed-adjustable electromagnetic safety valve

Technical Field

The utility model belongs to the technical field of the relief valve, concretely relates to guide's formula speed adjustable electromagnetism relief valve.

Background

The safety valve is a special valve which is in a normally closed state under the action of external force, when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of a system, the safety valve belongs to the class of automatic valves, is mainly used for boilers, pressure containers and pipelines, controls the pressure to be not more than the specified value, plays an important role in protecting the personal safety and the equipment operation, can be used only by pressure tests, is a special branch of a valve family, has the particularity that the safety valve only plays a role of opening and closing unlike other valves, more importantly plays a role in protecting the safety of the equipment, along with the rapid development of economic construction in China, equipment project engineering with pressure control is more and more, and in view of the requirement of equipment pressure relief, the safety valve plays a vital role of a pilot type electromagnetic valve in protecting the equipment, when the power is off, under the action of spring force and gravity of the main valve core, the valve rod is reset, the pilot hole is closed, the main valve core moves downwards, the main valve port is closed, the pressure of the upper cavity of the electromagnetic valve is increased, the fluid pressure pressurizes the main valve core, and the sealing is better.

The prior pilot operated safety valve technology has the following problems: the existing pilot-operated electromagnetic safety valve is continuously electrified with a coil assembly, the coil assembly generates heat, the heat can be diffused to a sealing ring at the contact position of the coil assembly and the inner peripheral wall of a valve body, so that the sealing ring is softened and cannot play a sealing effect, in addition, in the electrified state of the coil assembly, a medium flows into a chamber for accommodating the coil assembly, so that the pressure p of the chamber is increased, and V, n and R are unchanged, and the following conditions are known according to the conditions that pV is equal to nrT (p is pressure, V is volume, n is mole number, and R is an ideal gas constant): the temperature T is increased, the normal work of the coil assembly can be influenced by the overhigh temperature T, even the coil assembly is caused to explode spontaneously, because a medium flows into the valve body from the pilot hole, pressure difference is formed at two ends of the pilot hole, namely, the pressure difference is formed around the main valve, and the main valve is driven to move up and down, so that the valve is opened and closed, the normal opening and closing of the main valve can be ensured only by the requirement of light quality and sensitive reaction on the main valve, the structures of the auxiliary air passages of most electromagnetic safety valves are complex, and the pilot type electromagnetic valve is troublesome to manufacture, so the manufacturing cost is higher, the production efficiency is lower, the adjustment is inconvenient when the pilot type electromagnetic valve is used, and the work production requirement cannot be accurately met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pilot-operated speed adjustable electromagnetism relief valve, along with coil pack's continuous circular telegram with current pilot-operated electromagnetism relief valve that proposes in solving above-mentioned background art, coil pack can produce the heat, its heat can spread on the sealing washer of coil pack and the contact department of valve body internal perisporium, cause the sealing washer to soften and can not play sealed effect, and, under the coil pack circular telegram state, there is the medium to flow in and to lead to this cavity pressure p to rise and V is unchangeable, n is unchangeable, R is unchangeable, according to pV become nrT (p is pressure, V is the volume, n is the mole number, R is ideal gas constant) and can know: the temperature T is increased, the normal work of the coil assembly can be influenced by the overhigh temperature T, even the coil assembly is caused to explode spontaneously, because a medium flows into the valve body from the pilot hole, pressure difference is formed at two ends of the pilot hole, namely, the pressure difference is formed around the main valve, and the main valve is driven to move up and down, so that the valve is opened and closed, the normal opening and closing of the main valve can be ensured only by the requirement of light quality and sensitive reaction on the main valve, the structures of the auxiliary air passages of most electromagnetic safety valves are complex, and the pilot type electromagnetic valve is troublesome to manufacture, so the manufacturing cost is higher, the production efficiency is lower, and the pilot type electromagnetic valve is inconvenient to adjust when in use and cannot accurately meet the work production requirement.

In order to achieve the above object, the utility model provides a following technical scheme: a pilot-operated electromagnetic safety valve with adjustable speed comprises a valve body, a valve cover and a valve core, wherein one end of the valve body is provided with a first sleeve, the other end of the valve body is provided with a second sleeve, a liquid inlet pipe is arranged inside the first sleeve, a liquid outlet pipe is arranged inside the second sleeve, one side of the surface of the valve body is provided with an adjusting mechanism, the other side of the surface of the valve body is fixedly provided with the valve cover, the upper end of the valve cover is provided with a coil assembly, one side of the coil assembly is fixedly connected with a control mechanism, a magnetic isolation assembly is arranged inside the coil assembly, the lower end of the magnetic isolation assembly is fixedly provided with an iron core assembly, the lower end of the iron core assembly is fixedly provided with a sealing ring between the valve cover and the coil assembly, the lower surface of the valve cover is provided with the valve core through a diaphragm spring, a telescopic rod is arranged inside the adjusting mechanism, and one end of the telescopic rod is fixedly arranged on the inner wall of the adjusting mechanism, the other end is connected with the adjusting rod in a sliding way.

Preferably, the valve cover is fixedly installed on the surface of the valve body through a fixing bolt, and a diaphragm is arranged between the valve cover and the valve body.

Preferably, the adjusting rod is arranged between the liquid inlet pipe and the liquid outlet pipe, and one end of the adjusting rod, which is far away from the telescopic rod, is abutted to the valve core.

Preferably, the valve core is embedded in the valve body, and one end of the valve core abuts against the first sleeve and the other end abuts against the second sleeve.

Preferably, the sealing ring is made of high-temperature resistant materials.

Preferably, the upper end of the valve body is communicated with the inside of the coil assembly.

Compared with the prior art, the utility model provides a guide's formula speed adjustable electromagnetism relief valve possesses following beneficial effect: the utility model discloses the sealing washer that sets up between valve gap and the coil pack can effectively prevent to take place to soften when high temperature, leading formula electromagnetism safety valve is at work, along with the continuous circular telegram of coil pack, coil pack can produce the heat, the heat can spread on the coil pack and the sealing washer of the contact department of the internal perisporium of valve body, the sealing washer is difficult to take place to soften, still can keep good sealed effect, the valve body is linked together with coil pack, valve gap and the diaphragm that the surface of cooperation valve body set up, can better protection electromagnetism safety valve, can not influence the normal work of coil pack when the high temperature, and can prevent the danger that coil pack from taking place the spontaneous explosion, when the setting circular telegram of case, mention by the electromagnetic force case, the pilot valve mouth is opened, the solenoid valve upper chamber passes through pilot hole release at this moment, form high low pressure differential around the case, under the effect of pressure differential, the valve core is pushed by fluid pressure to move upwards to open the valve port, the adjusting mechanism can control the adjusting rod to move through the telescopic rod, and the size of the valve port of the electromagnetic valve can be better controlled, so that the size of the pilot valve port of the electromagnetic valve is accurately controlled, when the electromagnetic valve is closed, the adjusting mechanism controls the adjusting rod to abut against the valve core, the valve core moves downwards, and the main valve port is closed; the pressure of the upper cavity of the electromagnetic valve rises, the fluid pressure pressurizes the main valve core, the sealing is better, the structure is simpler, the manufacturing and the assembling are more convenient, the cost is low, the production efficiency is high, and the requirement for production work can be better met.

Drawings

The accompanying drawings 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, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural view of a pilot-operated speed-adjustable electromagnetic safety valve provided by the present invention;

fig. 2 is a schematic structural diagram of the solenoid valve according to the present invention when the solenoid valve is opened;

in the figure: 1. a valve body; 2. a liquid inlet pipe; 3. a first sleeve; 4. fixing the bolt; 5. a control mechanism; 6. a magnetic isolation assembly; 7. an iron core spring; 8. a coil assembly; 9. an iron core assembly; 10. a seal ring; 11. a diaphragm spring; 12. a valve cover; 13. a membrane; 14. a liquid outlet pipe; 15. a second sleeve; 16. a valve core; 17. an adjustment mechanism; 18. a telescopic rod; 19. and adjusting the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a pilot-operated speed-adjustable electromagnetic safety valve, which comprises:

a pilot-operated electromagnetic safety valve with adjustable speed comprises a valve body 1, a valve cover 12 and a valve core 16, wherein one end of the valve body 1 is provided with a first sleeve 3, the other end of the valve body is provided with a second sleeve 15, a liquid inlet pipe 2 is arranged inside the first sleeve 3, a liquid outlet pipe 14 is arranged inside the second sleeve 15, one side of the surface of the valve body 1 is provided with an adjusting mechanism 17, the other side of the surface of the valve body 1 is fixedly provided with the valve cover 12, the upper end of the valve cover 12 is provided with a coil assembly 8, one side of the coil assembly 8 is fixedly connected with a control mechanism 5, the valve body 1 automatically adjusts the opening, closing and size of flow according to needs through the control mechanism 5 and the adjusting mechanism 17, the inside of the coil assembly 8 is provided with a magnetic isolation assembly 6, the lower end of the magnetic isolation assembly 6 is fixedly provided with an iron core spring 7, the lower end of the iron core spring 7 is fixedly provided with an iron core assembly 9, and a sealing ring 10 is arranged between the valve cover 12 and the coil assembly 8, the sealing ring 10 arranged between the valve cover 12 and the coil component 8 can effectively prevent the softening at high temperature, when the pilot-operated electromagnetic safety valve works, along with the continuous electrification of the coil component 8, the coil component 8 can generate heat which can be diffused to the sealing ring 10 at the contact part of the coil component 8 and the inner peripheral wall of the valve body 1, the sealing ring 10 is not easy to soften and can still keep good sealing effect, the lower surface of the valve cover 12 is provided with a valve core 16 through a diaphragm spring 11, an expansion rod 18 is arranged inside an adjusting mechanism 17, one end of the expansion rod 18 is fixedly arranged on the inner wall of the adjusting mechanism 17, the other end is in sliding connection with an adjusting rod 19, when the valve is electrified, the valve core 16 is lifted by means of electromagnetic force, the pilot valve opening is opened, at the moment, the upper cavity of the electromagnetic valve forms low and high pressure difference around the valve core 16 through a pilot hole, under the action of the pressure difference, the fluid pressure pushes the valve core 16 to move upwards to open, the adjusting mechanism 17 can control the adjusting rod 19 to move through the telescopic rod 18, and can better control the size of the valve port of the electromagnetic valve, so that the size of the pilot valve port of the electromagnetic valve is accurately controlled, when the pilot valve port is closed, the adjusting mechanism 17 controls the adjusting rod 19 to abut against the valve core 16, the valve core 16 moves downwards, and the main valve port is closed; the pressure of the upper cavity of the electromagnetic valve is increased, the fluid pressure pressurizes the valve core 16, the sealing is better, the structure is simpler, the manufacturing and the assembling are more convenient, the cost is low, the production efficiency is high, and the requirement of production work can be better met.

Valve gap 12 passes through fixing bolt 4 fixed mounting on the surface of valve body 1, be provided with diaphragm 13 between valve gap 12 and the valve body 1, it sets up between feed liquor pipe 2 and drain pipe 14 to adjust pole 19, and one end butt case 16 keeping away from telescopic link 18, the inside at valve body 1 is installed in 16 embeddings of case, and the first sleeve 3 of one end butt of case 16, other end butt second sleeve 15, sealing washer 10 is high temperature resistant material, the upper end and the coil pack 8 of valve body 1 are inside to be linked together, valve body 1 is linked together with coil pack 8, valve gap 12 and diaphragm 13 of the surface setting of cooperation valve body 1, protection electromagnetic safety valve that can be better, can not influence coil pack 8's normal work when the high temperature, and can prevent that coil pack 8 from taking place the danger of auto-explosion.

The utility model discloses a theory of operation and use flow: the valve body 1 automatically adjusts the opening, closing and size of flow according to needs through the control mechanism 5 and the adjusting mechanism 17, the sealing ring 10 arranged between the valve cover 12 and the coil assembly 8 can effectively prevent softening at high temperature, the pilot-operated electromagnetic safety valve can generate heat along with the continuous power-on of the coil assembly 8 when in work, the heat can be diffused to the sealing ring 10 at the contact part of the coil assembly 8 and the inner peripheral wall of the valve body 1, the sealing ring 10 is not easy to soften and can still keep good sealing effect, the valve body 1 is communicated with the coil assembly 8, the valve cover 12 and the diaphragm 13 arranged on the surface of the valve body 1 are matched, the electromagnetic safety valve can be better protected, the normal work of the coil assembly 8 can not be influenced when the temperature is too high, the self-explosion danger of the coil assembly 8 can be prevented, the valve core 16 is arranged, and the valve core 16 is lifted by the electromagnetic force when in power-on, when the pilot valve port is opened, the upper cavity of the electromagnetic valve is relieved by the pilot hole, a low-high pressure difference is formed around the valve core 16, under the action of the pressure difference, the valve core 16 is pushed by fluid pressure to move upwards to open the valve port, the adjusting mechanism 17 can control the adjusting rod 19 to move through the telescopic rod 18, the size of the valve port of the electromagnetic valve can be better controlled, so that the size of the pilot valve port of the electromagnetic valve is accurately controlled, when the pilot valve port is closed, the adjusting mechanism 17 controls the adjusting rod 19 to abut against the valve core 16, the valve core 16 moves downwards, and the main valve port is closed; the pressure of the upper cavity of the electromagnetic valve is increased, the fluid pressure pressurizes the valve core 16, the sealing is better, the structure is simpler, the manufacturing and the assembling are more convenient, the cost is low, the production efficiency is high, and the requirement of production work can be better met.

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

Claims

1. The utility model provides a pilot-operated speed adjustable electromagnetic safety valve, includes valve body (1), valve gap (12) and case (16), its characterized in that: the one end of valve body (1) is provided with first sleeve (3), and the other end is provided with second sleeve (15), the inside of first sleeve (3) is provided with feed liquor pipe (2), the inside of second sleeve (15) is provided with drain pipe (14), surface one side of valve body (1) is provided with adjustment mechanism (17), opposite side fixed mounting has valve gap (12), the upper end of valve gap (12) is provided with coil pack (8), one side fixed connection of coil pack (8) has control mechanism (5), the inside of coil pack (8) is provided with separates magnetism subassembly (6), the lower extreme fixed mounting that separates magnetism subassembly (6) has iron core spring (7), the lower extreme fixed mounting of iron core spring (7) has iron core subassembly (9), be provided with sealing washer (10) between valve gap (12) and coil subassembly (8), the lower surface of the valve cover (12) is provided with a valve core (16) through a diaphragm spring (11), an expansion rod (18) is arranged inside the adjusting mechanism (17), one end of the expansion rod (18) is fixedly arranged on the inner wall of the adjusting mechanism (17), and the other end of the expansion rod is connected with an adjusting rod (19) in a sliding mode.

2. The pilot-operated speed-regulated electromagnetic safety valve according to claim 1, wherein: the valve cover (12) is fixedly installed on the surface of the valve body (1) through a fixing bolt (4), and a diaphragm (13) is arranged between the valve cover (12) and the valve body (1).

3. The pilot-operated speed-regulated electromagnetic safety valve according to claim 1, wherein: the adjusting rod (19) is arranged between the liquid inlet pipe (2) and the liquid outlet pipe (14), and one end of the adjusting rod, which is far away from the telescopic rod (18), is abutted to the valve core (16).

4. The pilot-operated speed-regulated electromagnetic safety valve according to claim 1, wherein: the valve core (16) is embedded in the valve body (1), one end of the valve core (16) is abutted to the first sleeve (3), and the other end of the valve core (16) is abutted to the second sleeve (15).

5. The pilot-operated speed-regulated electromagnetic safety valve according to claim 1, wherein: the sealing ring (10) is made of high-temperature resistant material.

6. The pilot-operated speed-regulated electromagnetic safety valve according to claim 1, wherein: the upper end of the valve body (1) is communicated with the interior of the coil assembly (8).