CN213392927U

CN213392927U - Electromagnetic valve

Info

Publication number: CN213392927U
Application number: CN202021908369.XU
Authority: CN
Inventors: 韩金乾
Original assignee: Ningbo Lixun Pneumatic Co ltd
Current assignee: Ningbo Lixun Pneumatic Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-06-08
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a solenoid valve, which comprises a valve body and two valve components symmetrically arranged at two ends of the valve body; each valve component comprises a valve cover, a valve sleeve and a valve rod, wherein the valve cover is arranged on the valve body, a diaphragm is arranged between the valve cover and the valve body, and a pilot cavity is formed between the diaphragm and the valve cover; the valve sleeve is fixed in the valve body, a through hole penetrates through the valve sleeve, and a first channel connected with the through hole is formed in the valve sleeve; the valve rod is arranged in the through hole in a sliding mode, one end of the valve rod is fixed on the diaphragm, the other end of the valve rod penetrates through the through hole and is connected with the sealing gasket, the diaphragm is in open-close fit with the first port of the through hole, and the sealing gasket is in open-close fit with the second port of the through hole; the valve body is provided with an inlet, a first working port and a second working port, a pilot channel is also arranged in the valve body, and a pilot assembly is arranged on the valve cover; a spring is arranged between the two valve rods in a propping mode, and the spring always has the tendency that the sealing gasket closes the second port. The utility model has the advantages of convenient connection, simple and compact structure and rapid assembly.

Description

Electromagnetic valve

Technical Field

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

Background

The solenoid valve is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The existing oxygen generator is equipment for preparing oxygen, and the principle of the oxygen generator is that the nitrogen and the oxygen in the air are separated by utilizing an air separation technology, adopting the adsorption performance of a molecular sieve and taking a large-discharge oil-free compressor as power through a physical principle to finally obtain high-concentration oxygen; the oxygen supply device is mainly used for medical oxygen supply. At present, a plurality of electromagnetic valves are needed to be mutually cooperated to control gas in an oxygen generator, and the electromagnetic valves are basically single bodies, so that the connection is troublesome, the assembly is complicated, and the pipelines are relatively messy; and mainly adopt board-like installation for attach fitting or interface are less, need external joint just can satisfy the demand, and this makes to connect more troublesome, has also reduced sealing performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide one kind have simple structure compactness, assembly swiftly and the interface is many and connect convenient solenoid valve.

The utility model provides a technical scheme that its technical problem adopted is: a solenoid valve comprises a valve body and two valve components symmetrically arranged at two ends of the valve body; each valve component comprises a valve cover, a valve sleeve and a valve rod, the valve cover is arranged on the valve body, a diaphragm is arranged between the valve cover and the valve body in a pressing mode, and a pilot cavity is formed between the diaphragm and the valve cover; the valve sleeve is fixed in the valve body, a through hole penetrates through the valve sleeve, and a first channel connected with the through hole is formed in the valve sleeve; the valve rod is arranged in the through hole in a sliding mode, one end of the valve rod is fixed on the diaphragm, the other end of the valve rod penetrates through the through hole and is connected with the sealing gasket, the diaphragm is in open-close fit with the first port of the through hole, and the sealing gasket is in open-close fit with the second port of the through hole;

the valve body is provided with an inlet communicated with the first port, a first working port communicated with the first channel and a second working port communicated with the second port, the inlet and the pilot cavity are communicated with each other, and the valve cover is provided with a pilot assembly for switching on and off the pilot channel;

and a spring is abutted between the two valve rods and always has a tendency of closing the second port by the sealing gasket.

Furthermore, a groove is formed in the valve body, and a convex block which is in inserting fit with the groove is arranged on the valve sleeve; the valve sleeve is firmly connected and is prevented from rotating.

Furthermore, the inlet, the first working port and the second working port are all arranged on the same side face of the valve body; the connector has the advantages that more connectors are provided, the connection of pipelines is facilitated, and the connected pipelines are conveniently arranged.

Furthermore, one inlet is arranged, and the inlet is arranged in the middle of the valve body; the gas enters from the same inlet and respectively supplies gas to the two valve components, so that the structure is simplified and the installation is convenient.

Furthermore, the first working port and the second working port are respectively provided with two corresponding to the valve assembly.

Furthermore, one end of the valve sleeve extends along the axial direction to form a limiting convex edge, and the limiting convex edge is arranged between the valve body and the diaphragm in a pressing mode; the valve sleeve is convenient to connect, so that the valve sleeve is firmly connected.

Furthermore, a second channel communicated with the first port and the second working port is formed in the limiting convex edge.

Furthermore, a plurality of first O-shaped rings are sleeved between the valve body and the valve sleeve; the sealing performance is improved.

The utility model has the advantages that: two valve components are symmetrically arranged at two ends of the valve body, each valve component comprises a valve cover, a valve sleeve and a valve rod, the valve cover is arranged on the valve body, a diaphragm is arranged between the valve cover and the valve body in a pressing mode, and a guide cavity is formed between the diaphragm and the valve cover; a spring is arranged between the two valve rods in a propping manner, the spring always has the tendency of enabling the sealing gasket to close the second port, and the channel of the pilot channel is controlled by the pilot assembly on the valve cover, so that the charging and discharging of the pilot cavity are realized, the valve rods slide relative to the valve sleeve, the control on the gas flow direction is achieved, two relatively single electromagnetic valves work in a cooperative manner, and the two electromagnetic valves are arranged on the same valve body, so that the structure is more compact, the connection of an inlet and each working port is convenient, the connected pipelines are more tidy and ordered, and the assembly is more rapid and convenient; generally speaking, the utility model discloses possess simple structure compactness, convenient assembling, gas tightness height and be convenient for the connection of pipeline, made the advantage of more clean and tidy orderliness of pipeline.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a schematic structural diagram of the valve sleeve of the present invention.

Shown in the figure: 1-a valve body; 1.1-inlet; 1.2-a first working port; 1.3-a second working port; 1.4-pilot channel; 1.5-grooves; 2-a valve assembly; 21-valve cover; 22-a valve housing; 22.1-through holes; 22.2 — first channel; 22.3 — first port; 22.4 — second port; 22.5-bumps; 22.6-limit convex edge; 22.7-second channel; 23-a valve stem; 24-a membrane; 25-a pilot cavity; 26-a gasket; 27-a pilot assembly; 3-a spring; 4-a first O-ring; 5-sealing ring; 6-second O-ring.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1 to 4, a solenoid valve includes a valve body 1 and two valve components 2 symmetrically disposed at two ends of the valve body 1; each valve component 2 comprises a valve cover 21, a valve sleeve 22 and a valve rod 23, the valve cover 21 is covered on the valve body 1, a diaphragm 24 is pressed between the valve cover 21 and the valve body 1, and a pilot cavity 25 is formed between the diaphragm 24 and the valve cover 21; the valve sleeve 22 is fixed in the valve body 1, a through hole 22.1 penetrates through the valve sleeve 22, and a first channel 22.2 connected with the through hole 22.1 is formed in the valve sleeve 22; the valve rod 23 is arranged in the through hole 22.1 in a sliding mode, one end of the valve rod 23 is fixed on the diaphragm 24, the other end of the valve rod 23 penetrates through the through hole 22.1 and is connected with the sealing gasket 26, the diaphragm 24 is matched with the first port 22.3 of the through hole 22.1 in an opening and closing mode, and the sealing gasket 26 is matched with the second port 22.4 of the through hole 22.1 in an opening and closing mode;

the valve body 1 is provided with an inlet 1.1 respectively communicated with the first port 22.3, a first working port 1.2 respectively communicated with the first channel 22.2 and a second working port 1.3 respectively communicated with the second port 22.4, a pilot channel 1.4 communicated with the inlet 1.1 and the pilot cavity 25 is also arranged in the valve body 1, and the valve cover 21 is provided with a pilot assembly 27 for switching on and off the pilot channel 1.4;

specifically, the pilot assembly 27 is an electromagnetic directional valve, and the pilot assembly 27 is provided with a positive connector and a negative connector which are convenient to connect, so that the power of an internal electromagnetic coil is convenient to control.

A spring 3 is arranged between the two valve rods 23, and the spring 3 always has a tendency to make the sealing gasket 26 close the second port 22.4.

The valve body 1 is internally provided with a groove 1.5, and the valve sleeve 22 is provided with a convex block 22.5 which is in splicing fit with the groove 1.5.

The inlet 1.1, the first working port 1.2 and the second working port 1.3 are all arranged on the same side surface of the valve body 1; specifically, the side face is provided with a sealing ring 5 matched with the side face, so that the sealing property is improved; when the valve is installed, the side face is correspondingly connected with the bus plate (or the valve island), so that a connected pipeline is effectively simplified, and the arrangement is convenient.

One inlet 1.1 is arranged, and the inlet 1.1 is arranged in the middle of the valve body 1.

The first working port 1.2 and the second working port 1.3 are respectively provided with two corresponding to the valve component 2.

One end of the valve sleeve 22 extends along the axial direction to form a limiting convex edge 22.6, and the limiting convex edge 22.6 is arranged between the valve body 1 and the diaphragm 24 in a pressing mode.

The limiting convex edge 22.6 is provided with a second channel 22.7 which is communicated with the first port 22.3 and the second working port 1.3.

A plurality of first O-shaped rings 4 are sleeved between the valve body 1 and the valve sleeve 22; preferably, a second O-ring 6 is provided between the bonnet 21 and the valve body 1, and the second O-ring 6 is provided corresponding to the pilot channel 1.4, so that the air tightness of the pilot channel 1.4 is improved.

The utility model discloses a concrete theory of operation as follows: specifically, as will be described in detail with the valve assembly 2 on one side, normally, under the action of the spring 3, the sealing gasket 26 tightly closes the second port 22.4, the pilot assembly 27 is not in an energized state, the pilot channel 1.4 is kept closed, and the pilot cavity 25 is kept at normal pressure, so that the first port 22.3 is kept open, at this time, the inlet 1.1 is not communicated with the first working port 1.2 nor the second working port 1.3, and the first working port 1.2 is in a mutually communicated state with the second working port 1.3 through the first channel 22.2, the through hole 22.1, and the second channel 22.7; when the pilot assembly 27 is powered on, the pilot channel 1.4 is opened, the gas in the inlet 1.1 flows to the pilot cavity 25 through the pilot channel 1.4 first, so that the pressure in the pilot cavity 25 is increased, the diaphragm 24 is pressed to move to the first port 22.3 and close the first port, and meanwhile, the valve rod 23 also moves relatively, so that the sealing gasket 26 opens the second port 22.4, at the moment, the gas in the inlet 1.1 can flow to the first working port 1.2 through the second port 22.4, the through hole 22.1 and the first channel 22.2, and the second working port 1.3 is closed; accordingly, the valve assembly 2 on the other side has the same principle as described above, and thus, the description thereof is omitted.

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. A solenoid valve, characterized by: comprises a valve body (1) and two valve components (2) which are symmetrically arranged at two ends of the valve body (1);

each valve component (2) comprises a valve cover (21), a valve sleeve (22) and a valve rod (23), the valve cover (21) is arranged on the valve body (1) in a covering mode, a diaphragm (24) is arranged between the valve cover (21) and the valve body (1) in a pressing mode, and a pilot cavity (25) is formed between the diaphragm (24) and the valve cover (21); the valve sleeve (22) is fixed in the valve body (1), a through hole (22.1) penetrates through the valve sleeve (22), and a first channel (22.2) connected with the through hole (22.1) is formed in the valve sleeve (22); the valve rod (23) is arranged in the through hole (22.1) in a sliding mode, one end of the valve rod (23) is fixed to the diaphragm (24), the other end of the valve rod (23) penetrates through the through hole (22.1) and is connected with a sealing gasket (26), the diaphragm (24) is matched with a first port (22.3) of the through hole (22.1) in an opening and closing mode, and the sealing gasket (26) is matched with a second port (22.4) of the through hole (22.1) in an opening and closing mode;

an inlet (1.1) communicated with the first port (22.3), a first working port (1.2) communicated with the first channel (22.2) and a second working port (1.3) communicated with the second port (22.4) are arranged on the valve body (1), a pilot channel (1.4) communicated with the inlet (1.1) and the pilot cavity (25) is further arranged in the valve body (1), and a pilot assembly (27) for switching on and off the pilot channel (1.4) is arranged on the valve cover (21);

two the support is equipped with spring (3) between valve rod (23), spring (3) have all the time and make sealed pad (26) close second port (22.4) the trend.

2. A solenoid valve according to claim 1, wherein: a groove (1.5) is formed in the valve body (1), and a convex block (22.5) which is in splicing fit with the groove (1.5) is arranged on the valve sleeve (22).

3. A solenoid valve according to claim 1, wherein: the inlet (1.1), the first working port (1.2) and the second working port (1.3) are all arranged on the same side face of the valve body (1).

4. A solenoid valve according to claim 3, wherein: one inlet (1.1) is arranged, and the inlet (1.1) is arranged in the middle of the valve body (1).

5. A solenoid valve according to claim 3, wherein: the first working port (1.2) and the second working port (1.3) are respectively provided with two corresponding to the valve component (2).

6. A solenoid valve according to claim 1, wherein: one end of the valve sleeve (22) extends along the axial direction to form a limiting convex edge (22.6), and the limiting convex edge (22.6) is arranged between the valve body (1) and the diaphragm (24) in a pressing mode.

7. A solenoid valve according to claim 6 wherein: and a second channel (22.7) communicated with the first port (22.3) and the second working port (1.3) is formed in the limiting convex edge (22.6).

8. A solenoid valve according to claim 1, wherein: a plurality of first O-shaped rings (4) are sleeved between the valve body (1) and the valve sleeve (22).