CN212251398U

CN212251398U - Electromagnetic valve

Info

Publication number: CN212251398U
Application number: CN202020678938.XU
Authority: CN
Inventors: 张伟荣
Original assignee: Zhejiang New Sanrong Refrigeration Co ltd
Current assignee: Zhejiang New Sanrong Refrigeration Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-12-29
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses an electromagnetic valve, which comprises a valve body, a piston and a magnetism-dividing component, wherein a valve port is arranged in the valve body, a valve cavity is formed between the valve port and the valve body at the upper part of the valve port, the lower part of the piston is used for opening or sealing the valve port, a mounting groove is arranged at the periphery of the piston, a piston ring and an elastic part are arranged in the mounting groove, the piston ring is in airtight fit with the valve cavity under the elastic action of the elastic part, a pressure difference hole is arranged on the piston, the pressure difference hole penetrates through the two ends of the piston along the moving direction of the piston, a via hole penetrating through the two ends of the piston is arranged at the middle, add piston ring and line spring in the piston periphery, on the one hand, increase the leakproofness between piston and the valve body, on the other hand, can compensate piston diameter wearing and tearing, and then guarantee the open valve effect and the life of solenoid valve.

Description

Electromagnetic valve

Technical Field

The utility model relates to a technical field of solenoid valve, in particular to solenoid valve.

Background

Solenoid valves are industrial devices that are controlled electromagnetically and are used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. Piston solenoid valve need reach more than 100 ten thousand as the general life of a control executive component, piston motion more than 100 ten thousand often arouses piston wearing and tearing, the prior art mostly adopts the better piston cooperation valve body of wear resistance to realize airtight effect, this kind of cooperation mode is along with constantly using the piston, make the diameter of piston can wear and tear and diminish, can appear sealed clearance gradually between piston ring and the valve body, influence solenoid valve's performance, finally lead to whole solenoid valve to become invalid along with sealed clearance's expansion, this is because of the urgent need for designing a section of solenoid valve that can compensate piston diameter wearing and tearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a piston ring and line spring are add to solenoid valve in the piston periphery, on the one hand, increase the leakproofness between piston and the valve body, and on the other hand, but compensation piston diameter wearing and tearing, and then guarantee opening valve effect and life of solenoid valve.

The above technical purpose of the present invention can be achieved by the following technical solutions: a valve port is arranged in the valve body, a valve cavity is formed by the valve port and the valve body on the upper portion of the valve port, the lower portion of the piston is used for opening or sealing the valve port, a mounting groove is formed in the periphery of the piston, a piston ring and an elastic piece are mounted in the mounting groove, the piston ring is in sealed fit with the valve cavity under the elastic force of the elastic piece, a pressure difference hole is formed in the piston, the pressure difference hole penetrates through the two ends of the piston along the moving direction of the piston, a through hole penetrating through the two ends of the piston is formed in the middle of the piston, and the magnetism dividing assembly drives the piston to conduct motion in the valve cavity so as to control the valve.

The piston further comprises a first cylinder part, a second cylinder part and a third cylinder part which are sequentially arranged from top to bottom, the third cylinder part is matched with the valve cavity in a sliding mode, the diameter of the third cylinder part is larger than that of the first cylinder part, the diameter of the first cylinder part is larger than that of the second cylinder part, the differential pressure hole is located in the third cylinder part and located at two ends of the valve port, and through holes penetrating through two ends of the first cylinder part are formed in the first cylinder part.

Furthermore, the inner end of the piston ring is provided with a notch, and the elastic piece is arranged in the notch.

Further, the elastic member is a wire spring.

Further, a valve cover is installed on the valve body, an inner cavity is formed in the valve cover, and the inner cavity is communicated with the valve cavity.

Furthermore, the magnetism dividing assembly comprises a sleeve arranged on the valve cover, a magnetism dividing head part fixedly arranged on the upper portion of the sleeve and a magnetism dividing body part arranged in the sleeve in a sliding mode, a spring is arranged between the magnetism dividing head part and the magnetism dividing body part in an abutting mode, and the lower portion of the magnetism dividing body part is used for sealing the through hole.

Furthermore, the middle part of the sub-magnet part is provided with a placement hole penetrating through the upper end surface and the lower end surface of the sub-magnet part, the lower placement hole is internally provided with an elastic pad, a flat gasket and a diaphragm which are sequentially arranged from top to bottom, a support ring is arranged in the bottom placement hole, the diaphragm can slide up and down in the placement hole, the upper part of the piston can stretch into the upper part of the support ring and drive the diaphragm to move upwards, and the flat gasket is enabled to compress the elastic pad.

Further, the upper portion of piston is the thimble that external diameter from the bottom up reduces, the diaphragm is used for the conducting hole in the sealed thimble.

Furthermore, the sub-magnet part comprises an upper cylinder and a lower cylinder, the upper cylinder is matched with the inner wall of the sleeve, the diameter of the lower cylinder is smaller than that of the upper cylinder, and a through hole communicated with the middle placement hole is formed in the peripheral wall of the lower cylinder of the sub-magnet part.

Furthermore, the lower end of the piston is provided with a sealing ring which is in sealing fit with the valve port.

To sum up, the utility model discloses following beneficial effect has:

the utility model discloses a battery valve, the periphery of piston is seted up the mounting groove, and the piston ring is installed in the mounting groove with line spring, and the piston ring realizes airtight cooperation with the valve body inner wall under the spring action of line spring, on the one hand, increases the leakproofness between piston and the valve body, and on the other hand, can compensate piston diameter wearing and tearing, and then guarantee the open valve effect of solenoid valve; the piston is arranged into the structure of the first cylinder part, the second cylinder part and the third cylinder part, so that the contact area between a medium in the valve cavity and the piston can be increased, the valve opening effect is better, the lower part of the sealing ring is provided with the step, the sealing ring is conveniently riveted to the piston, and the firmness of the sealing ring and the piston is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of the utility model at A;

fig. 3 is a schematic view of a piston of the present invention.

In the figure: 1. a valve body; 11. a flow channel; 111. separating ribs; 112. fixing the ribs; 12. a valve cavity; 13. a connecting pipe; 14. a valve port; 2. a piston; 21. mounting grooves; 22. a piston ring; 221. a notch; 23. an elastic member; 24. a differential pressure orifice; 25. a seal ring; 251. a step; 26. a first tube section; 261. a through hole; 262. a thimble; 27. a second cylinder part; 28. a third cylinder part; 29. a via hole; 3. a valve cover; 31. a gasket; 4. a sleeve; 41. a shunt head part; 42. dividing the magnet part; 421. placing the hole; 422. a spring; 423. a spring pad; 424. a flat gasket; 425. a membrane; 426. a support ring; 427. a through hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "forward", "rearward", "surface", "side", "inner", "around", and the like, indicate positional or orientational relationships and are merely used for convenience in describing the invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

As shown in fig. 1-3, an electromagnetic valve, including valve body 1, piston 2 and branch magnetic assembly, valve body 1 is three way construction, including lateral runner 11 and fore-and-aft valve pocket 12, 1 upper portion threaded connection of valve body has valve gap 3, be equipped with sealed pad 31 between valve gap 3 and the valve body 1, valve pocket 12 communicates the inner chamber of valve gap 3, connecting pipe 13 has been welded respectively at runner 11's both ends, the utility model discloses in, the medium gets into from the connecting pipe 13 of right-hand member, flows out from the connecting pipe 13 of left end, vertically protruding being equipped with in runner 11 separates muscle 111, valve pocket 12 extends for the one end that separates muscle 111 has fixed muscle 112, it forms valve port 14 with the cooperation of fixed muscle 112 to separate muscle 111

The lower portion of the piston 2 is used for opening or sealing the valve port 14, an installation groove 21 is formed in the periphery of the piston 2, a piston ring 22 and an elastic element 23 are installed in the installation groove 21, the piston ring 22 is in sealing fit with the valve cavity 12 under the elastic force of the elastic element 23, a pressure difference hole 24 is formed in the piston 2, the pressure difference hole 24 penetrates through two ends of the piston 2 along the moving direction of the piston 2, a through hole 29 penetrating through two ends of the piston 2 is formed in the middle of the piston 2, and the magnetic dividing assembly drives the piston 2 to conduct motion in the valve cavity 12 to control the valve port 14 to be opened or closed.

The lower end of the piston 2 is provided with a sealing ring 25, the sealing ring 25 is in sealed fit with the valve port 14, when the sealing ring 25 seals the valve port 14, the electromagnetic valve is closed, a medium cannot flow from the connecting pipe 13 at the right end to the connecting pipe 13 at the left end, the middle parts of the piston 2 and the sealing ring 25 are provided with a through hole 29, and the through hole 29 penetrates through the thimble 262 and the sealing ring 25.

2 peripheries of piston are equipped with mounting groove 21, install piston ring 22 and elastic component 23 in the mounting groove 21, piston ring 22 realizes airtight cooperation with 1 inner wall of valve body under the elastic action of elastic component 23, the utility model discloses in elastic component 23 adopts the line spring, pressure differential hole 24 has been seted up on the piston 2, pressure differential hole 24 runs through 2 both ends of piston along 2 moving directions of piston.

Notch 221 has been seted up to piston ring 22's the inner, with the line spring card in notch 221, prevent that the line spring from taking place the displacement in mounting groove 21 and influencing piston ring 22's sealed effect, notch 221 is located piston ring 22's middle section, makes piston ring 22 atress even.

The piston 2 comprises a first cylinder part 26, a second cylinder part 27 and a third cylinder part 28 which are sequentially arranged from top to bottom, the third cylinder part 28 is matched with the valve cavity 12 in a sliding mode, the diameter of the third cylinder part 28 is larger than that of the first cylinder part 26, the diameter of the first cylinder part 26 is larger than that of the second cylinder part 27, the differential pressure hole 24 is positioned at the third cylinder part 28 and is positioned at two ends of the valve port 14, a through hole 261 penetrating through two ends of the first cylinder part is formed in the first cylinder part 26, a medium flows to the first cylinder part 26 from the differential pressure hole 24, and then the contact area of the medium and the piston 2 is increased, so that the valve opening effect of the piston 2 is better, and the performance of the electromagnetic valve is better.

Divide magnetic assembly including installing in sleeve pipe 4 on valve gap 3 upper portion, the upper portion fixed mounting of sleeve pipe 4 has branch magnetic head part 41, install branch magnetic body part 42 in the sleeve pipe 4, the utility model discloses in, divide magnetic body part 42 for integrated into one piece or connect last cylinder and lower cylinder as an organic whole, go up the cooperation that slides of the inner wall of cylinder and sleeve pipe 4, the diameter of lower cylinder is less than the diameter of last cylinder, divide magnetic body part 42 axial motion in sleeve pipe 4, divide magnetic body part 42 middle part to be equipped with the hole 421 of placing that runs through branch magnetic body part 42 upper and lower both ends, upper portion hole 421 of placing is formed with the mesa, goes up the mesa and has connect spring 422 with branch magnetic head part 41 between the butt, the lower part of sleeve pipe 4 extends to in the valve gap 3, and lower part hole 421 is formed with lower mesa, installs bullet pad 423 to down in the hole 421 of placing from last, The piston comprises a flat gasket 424 and a diaphragm 425, wherein the upper part of the piston 2 is provided with a thimble 262, the top of the thimble 262 is abutted against the diaphragm 425, so that a spring cushion 423 presses a lower table surface, the spring cushion 423 is arranged in a downward protruding mode and can generate elastic deformation, the diaphragm 425 can be made of plastic materials, the flat gasket 424 is used for protecting the diaphragm 425 and preventing the diaphragm 425 from deforming to influence the sealing performance of the thimble 262 and the diaphragm 425.

The peripheral wall of the sub-magnet member 42 is provided with a through hole 427 communicating with the middle placement hole 421, and the through hole 427 plays a role in balancing medium circulation.

The bottom of the sub-magnet part 42 is provided with a support ring 426, the support ring 426 is made of an elastic material and is clamped in the placement hole 421, on one hand, the support ring 426 is used for supporting the membrane 425 and preventing the membrane from falling from the lower placement hole 421, on the other hand, the support ring 426 is used for being in sealing fit with the periphery of the ejector pin 262, the outer diameter of the ejector pin 262 is reduced from bottom to top, and when the piston 2 moves upwards relative to the sub-magnet part 42, the periphery of the ejector pin 262 is convenient for being in sealing fit with the support.

The lower part of the sealing ring 25 is provided with a step 251, so that the sealing ring 25 is riveted to the piston 2 conveniently, and the firmness of the sealing ring 25 and the piston 2 is better.

The utility model discloses a basic operating principle does:

opening state of the electromagnetic valve: the magnetic head part 41 is electrified to generate suction force, so that the magnetic head part 42 moves upwards against the elastic force of the spring 422 and the gravity of the magnetic head part 42, the through hole 29 is opened, the flow rate of the medium in the valve cavity 12 above the third cylinder part 28 entering the valve cavity 12 below the third cylinder part 28 through the through hole 29 is larger than the flow rate of the medium flowing into the valve cavity 12 above the third cylinder part 28 from the right end connecting pipe 13, the valve cavity 12 above the third cylinder part 28 is in a low-pressure area, the valve cavity 12 below the third cylinder part 28 is in a high-pressure area due to the fact that the valve cavity 12 below the third cylinder part 28 is communicated with the right end connecting pipe 13, an upward pressure difference is generated, the medium entering the valve cavity 11 from the right end connecting pipe 13 acts on the lower bottom surfaces of the first cylinder part 21 and the third cylinder part 23, an upward thrust is generated, the piston 2 is jacked up under the action of the, the medium in the right connecting pipe 13 can enter the left connecting pipe 13 from the valve port 14.

Closing state of the electromagnetic valve: the magnetic dividing head part 41 is powered off, the magnetic dividing body part 42 moves downwards under the action of the elastic force of the spring 422 and the gravity of the spring 422 and pushes the piston 2 to move downwards along the valve cavity 12 until the valve port 14 is sealed by the sealing ring 25, at this time, the valve port 14 is closed, and the medium in the connecting pipe 13 at the right end cannot enter the connecting pipe 13 at the left end from the valve port 14.

The utility model discloses a piston, install in the valve body 1 of solenoid valve, the mounting groove 21 is seted up to the periphery of piston 2, and piston ring 22 and wire spring 422 are installed in mounting groove 21, and piston ring 22 realizes airtight cooperation with the inner wall of valve body 1 under the spring action of wire spring 422, on the one hand, increases the leakproofness between piston 2 and valve body 1, and on the other hand, can compensate piston 2 diameter wearing and tearing, and then guarantee the valve opening effect and the life of solenoid valve; the arrangement of the piston having the first, second, and third

cylindrical portions

26, 27, and 28 increases the contact area between the medium in the valve chamber 12 and the piston 2, thereby improving the valve opening effect.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. An electromagnetic valve, comprising a valve body (1), a piston (2) and a magnetism-dividing component, wherein a valve port (14) is arranged in the valve body (1), a valve cavity (12) is formed by the valve port (14) and the valve body (1) on the upper portion of the valve port (14), the lower portion of the piston (2) is used for opening or sealing the valve port (14), and the electromagnetic valve is characterized in that: the valve is characterized in that a mounting groove (21) is formed in the periphery of the piston (2), a piston ring (22) and an elastic piece (23) are mounted in the mounting groove (21), the piston ring (22) is in sealed fit with the valve cavity (12) under the elastic action of the elastic piece (23), a pressure difference hole (24) is formed in the piston (2), the pressure difference hole (24) penetrates through two ends of the piston (2) along the moving direction of the piston (2), a through hole (29) penetrating through two ends of the piston (2) is formed in the middle of the piston (2), and the magnetic dividing assembly drives the piston (2) to conduct guide movement in the valve cavity (12) so as to control the valve port (14) to be opened or closed.

2. A solenoid valve according to claim 1, wherein: the piston (2) comprises a first cylinder part (26), a second cylinder part (27) and a third cylinder part (28) which are sequentially arranged from top to bottom, the third cylinder part (28) is matched with the valve cavity (12) in a sliding mode, the diameter of the third cylinder part (28) is larger than that of the first cylinder part (26), the diameter of the first cylinder part (26) is larger than that of the second cylinder part (27), the differential pressure hole (24) is located in the third cylinder part (28) and located at two ends of the valve port (14), and a through hole (261) penetrating through two ends of the first cylinder part is formed in the first cylinder part (26).

3. A solenoid valve according to claim 1, wherein: the inner end of the piston ring (22) is provided with a notch (221), and the elastic piece (23) is arranged in the notch (221).

4. A solenoid valve according to any one of claims 1 to 3 wherein: the elastic piece (23) adopts a wire spring.

5. A solenoid valve according to claim 1, wherein: the valve cover (3) is installed on the valve body (1), an inner cavity is formed in the valve cover (3), and the inner cavity is communicated with the valve cavity (12).

6. A solenoid valve according to claim 5 wherein: the magnetic dividing component comprises a sleeve (4) arranged on the valve cover (3), a magnetic dividing head component (41) fixedly arranged on the upper portion of the sleeve (4) and a magnetic dividing body component (42) arranged in the sleeve (4) in a sliding mode, a spring (422) is arranged between the magnetic dividing head component (41) and the magnetic dividing body component (42) in a supporting mode, and the lower portion of the magnetic dividing body component (42) is used for sealing the through hole (29).

7. A solenoid valve according to claim 6 wherein: divide the middle part of magnet part (42) to offer and run through arrangement hole (421) of its upper and lower terminal surface, install in lower part arrangement hole (421) from last to down bullet pad (423), flat gasket (424) and diaphragm (425) that set gradually, be equipped with support ring (426) in bottom arrangement hole (421), diaphragm (425) can slide from top to bottom in arrangement hole (421), the upper portion of piston (2) can stretch into in the upper portion of support ring (426) and drive diaphragm (425) upward movement for flat gasket (424) compresses tightly bullet pad (423).

8. A solenoid valve according to claim 7, wherein: the upper portion of piston (2) is outside diameter from bottom to top shrink's thimble (262), diaphragm (425) are used for sealing conducting hole (29) in thimble (262).

9. A solenoid valve according to claim 7, wherein: the sub-magnet component (42) comprises an upper cylinder and a lower cylinder, the upper cylinder is matched with the inner wall of the sleeve (4), the diameter of the lower cylinder is smaller than that of the upper cylinder, and a through hole (427) communicated with the middle placement hole (421) is formed in the peripheral wall of the lower cylinder of the sub-magnet component (42).

10. A solenoid valve according to claim 1, wherein: and a sealing ring (25) which is in sealing fit with the valve port (14) is arranged at the lower end of the piston (2).