CN220302441U - Normally open two-position two-way electromagnetic valve - Google Patents
Normally open two-position two-way electromagnetic valve Download PDFInfo
- Publication number
- CN220302441U CN220302441U CN202322000522.9U CN202322000522U CN220302441U CN 220302441 U CN220302441 U CN 220302441U CN 202322000522 U CN202322000522 U CN 202322000522U CN 220302441 U CN220302441 U CN 220302441U
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- valve
- spring
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- valve core
- normally open
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- 238000007789 sealing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a normally open two-position two-way electromagnetic valve which comprises an electromagnet assembly and a valve body, wherein a valve core is arranged in the valve body, a push rod is arranged in the electromagnet assembly, a spring seat is arranged in the valve body, a spring is sleeved on the valve core, one end of the spring is arranged on the spring seat, the other end of the spring is arranged on a fixed sleeve, the fixed sleeve is arranged on the valve core, and a valve seat is arranged in the valve body at the front end of the valve core. The utility model has simple structure and reasonable design, the electromagnetic valve is changed from the traditional slide valve type to the cone valve type, the sealing mode is changed from the clearance sealing to the conical surface sealing and the O-shaped ring sealing, the zero leakage of high-pressure oil can be realized, and the electromagnetic valve is not influenced by the pressure of the system, so that the electromagnetic valve can be used for oil feeding and unloading in a hydraulic system, and has good pressure maintaining effect.
Description
Technical Field
The utility model relates to the technical field of electromagnetic valves, in particular to a normally open two-position two-way electromagnetic valve.
Background
The two-position two-way electromagnetic valve is widely applied to a hydraulic system of engineering machinery, and is a slide valve type common at home and abroad at present, and mainly comprises an electromagnet assembly 8, a valve core 1, a spring 2, a valve sleeve 3, a check ring 4, an O-shaped ring (1), an O-shaped ring (2) and an O-shaped ring (3) as shown in figure 4. The working principle is that when the electromagnet is not electrified, the valve core 1 is positioned at the right end under the action of the spring, and the port A and the port B are communicated, so that oil can be bidirectionally communicated; when the electromagnet is electrified, as shown in fig. 5, the valve core 1 moves leftwards against the spring force under the action of the push rod 9, and a closing state is formed between the port A and the port B to form a sealing belt d. Because the structure is a slide valve type, a certain gap is reserved between the sealing belt d between the valve core 1 and the valve sleeve 3, certain leakage can be generated under high pressure, and the higher the pressure is, the larger the leakage is, so that the ideal pressure maintaining effect cannot be realized although the basic functions of oil filling and unloading can be completed.
Disclosure of Invention
The utility model aims to solve the technical problems and provides a normally open two-position two-way electromagnetic valve which can play roles in oil feeding, unloading and pressure maintaining.
In order to achieve the technical purpose and meet the technical requirements, the utility model adopts the technical scheme that: the utility model provides a normally open two-position two-way solenoid valve, includes electro-magnet assembly, valve body, be provided with the case in the valve body, be provided with ejector pin, its characterized in that in the electro-magnet assembly: the valve is characterized in that a spring seat is arranged in the valve body, a spring is sleeved on the valve core, one end of the spring is arranged on the spring seat, the other end of the spring is arranged at a step of the fixed sleeve, the fixed sleeve is arranged on the valve core, and a valve seat is arranged in the valve body at the front end of the valve core.
Preferably: the inner diameter d1 of the valve seat is equal to the outer diameter d2 of the valve core.
Preferably: the surface of the front end of the valve core, which is matched with the valve seat orifice, is set as a conical surface.
Preferably: the valve core is in clearance fit with the valve body, and the outer circle of the valve core is sealed with the inner hole of the valve body through an O-shaped ring B.
Preferably: the end face of the valve body is sealed with the electromagnet assembly through an O-shaped ring A, and an O-shaped ring C and a check ring are arranged on the outer ring of the valve body.
Preferably: the fixed sleeve is in interference fit with the valve core.
Compared with the traditional structure, the utility model has the beneficial effects that: the electromagnetic valve is of a bidirectional normally open type, the traditional slide valve type is changed into a conical valve type, the sealing mode is changed into a conical surface type seal and an O-shaped ring type seal, high-pressure oil zero leakage can be realized, the electromagnetic valve is not influenced by the pressure of the system, the electromagnetic valve can be used for oil passing and unloading in a hydraulic system, and the electromagnetic valve has a good pressure maintaining effect and is widely applied to the hydraulic system of engineering machinery.
Drawings
FIG. 1 is a schematic diagram of a power loss state structure of the present utility model;
FIG. 2 is a schematic diagram of the power on state structure of the present utility model;
FIG. 3 is a hydraulic schematic of the present utility model;
FIG. 4 is a schematic diagram of a prior art spool valve type two-position two-way solenoid valve in a de-energized state;
FIG. 5 is a schematic diagram of the power-on state of a prior art spool valve type two-position two-way solenoid valve;
FIG. 6 is a hydraulic schematic diagram of a prior art spool valve type two-position two-way solenoid valve;
in the figure: 1. the valve comprises a valve body, a fixed sleeve, a spring seat, a valve core, a valve seat, a retainer ring, an electromagnet assembly, a push rod, a 10. O-shaped ring A, an 11. O-shaped ring B and a 12. O-shaped ring C.
Detailed Description
The present utility model will be further described below.
Referring to the drawings, a normally open two-position two-way solenoid valve comprises an electromagnet assembly 8 and a valve body 1, wherein an oil inlet port A and an oil inlet port B are formed in the valve body, a valve core 5 is arranged in the valve body 1, and a push rod 9 is arranged in the electromagnet assembly 8, and is characterized in that: the valve is characterized in that a spring seat 4 is arranged in the valve body 1, a spring 3 is sleeved on the valve core 5, one end of the spring 3 is arranged on the spring seat 4, the other end of the spring is arranged at a step of the fixed sleeve 2, the fixed sleeve 2 is arranged on the valve core 5, and a fixed valve seat 6 is arranged in the valve body 1 at the front end of the valve core 5.
In the preferred embodiment, the inner diameter d1 of the valve seat 6 is equal to the outer diameter d2 of the valve body 5.
In the preferred embodiment, the surface of the front end of the valve core 5 matched with the orifice of the valve seat 6 is a conical surface.
In the preferred embodiment, the valve core 5 is in clearance fit with the valve body 1, and the outer circle of the valve core 5 is sealed with the inner hole of the valve body 1 through an O-shaped ring B11.
In the preferred embodiment, the end face of the valve body 1 is sealed with the electromagnet assembly 8 through an O-shaped ring A10, and an O-shaped ring C12 and a retainer ring 7 are arranged on the outer ring of the valve body 1.
In the preferred embodiment, the fixed sleeve 2 and the valve core 5 are in interference fit.
In specific implementation, firstly, the O-shaped ring B11 is installed in the valve body 1, the spring seat 4 is pressed into the valve body 1 with smaller interference to fix the O-shaped ring B11, then the valve core 5 is installed in the valve body 1 in a clearance fit mode, the spring 3 is sleeved on the valve core 5, the fixed sleeve 2 is pressed into the valve core 5 with larger interference to reliably fix the spring and keep reasonable compression, and finally the valve seat 6 is pressed into the valve body 1 with smaller interference and is buckled, so that the valve seat 6 cannot be loosened under frequent impact of the valve core 5, the inner hole d1 of the valve seat 6 is equal to the outer circle d2 of the valve core 5, and the actual machining error is not more than 0.05 millimeter. When the electromagnet is powered off, under the action of spring force, the valve core 5 and the valve seat 6 are in an open state, and oil can be bidirectionally communicated between the port A and the port B in the figure 1, and at the moment, a hydraulic system can provide a power oil source for the oil cylinder or the motor and can discharge high-pressure oil of the oil cylinder or the motor; when the electromagnet is powered on, the ejector rod 9 moves leftwards against spring force, friction force and the like, the valve core 5 moves leftwards under the action of the ejector rod 9, so that the conical surface of the valve core 5 is attached to the orifice of the valve seat 6 to form conical surface sealing, the valve core 5 and the valve seat 6 are in a closed state, and the opening A and the opening B are disconnected, as shown in figure 2, no matter high-pressure oil comes from the opening A or the opening B, namely, no matter the opening A and the opening B are in a low-pressure or high-pressure state, the pressure of the valve core 5 in the valve body 1 is balanced, and the valve core 5 and the valve seat 6 can keep a stable closed state under the action of electromagnetic force. In the structure, the valve core 5 and the valve seat 6 are sealed by conical surfaces, the outer circle of the valve core 5 and the inner hole of the valve body 1 are sealed by O-shaped rings, and when the roundness of the valve core conical surface and the valve seat inner hole which are actually processed is within 0.005 mm, zero leakage can be realized from the port A to the port B, and the valve core is not influenced by the pressure of a system, so that the valve core has a good pressure maintaining effect in a hydraulic system.
The foregoing embodiments of the present utility model are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model, and all equivalent technical solutions are also included in the scope of the present utility model, which is defined by the claims.
Claims (6)
1. The utility model provides a normally open two-position two-way solenoid valve, includes electro-magnet assembly (8), valve body (1), be provided with case (5) in valve body (1), be provided with ejector pin (9), its characterized in that in electro-magnet assembly (8): the valve is characterized in that a spring seat (4) is arranged in the valve body (1), a spring (3) is sleeved on the valve core (5), one end of the spring (3) is arranged on the spring seat (4), the other end of the spring is arranged on the fixed sleeve (2), the fixed sleeve (2) is arranged on the valve core (5), and a valve seat (6) is arranged in the valve body (1) at the front end of the valve core (5).
2. The normally open two-position two-way solenoid valve according to claim 1, wherein: the inner diameter d1 of the valve seat (6) is equal to the outer diameter d2 of the valve core (5).
3. The normally open two-position two-way solenoid valve according to claim 1, wherein: the surface of the front end of the valve core (5) matched with the orifice of the valve seat (6) is a conical surface.
4. The normally open two-position two-way solenoid valve according to claim 1, wherein: the valve core (5) is in clearance fit with the valve body (1), and the outer circle of the valve core (5) is sealed with the inner hole of the valve body (1) through an O-shaped ring B (11).
5. The normally open two-position two-way solenoid valve according to claim 1, wherein: the end face of the valve body (1) is sealed with the electromagnet assembly (8) through an O-shaped ring A (10), and an O-shaped ring C (12) and a check ring (7) are arranged on the outer ring of the valve body (1).
6. The normally open two-position two-way solenoid valve according to claim 1, wherein: the fixed sleeve (2) and the valve core (5) are in interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000522.9U CN220302441U (en) | 2023-07-28 | 2023-07-28 | Normally open two-position two-way electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000522.9U CN220302441U (en) | 2023-07-28 | 2023-07-28 | Normally open two-position two-way electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302441U true CN220302441U (en) | 2024-01-05 |
Family
ID=89345019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322000522.9U Active CN220302441U (en) | 2023-07-28 | 2023-07-28 | Normally open two-position two-way electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302441U (en) |
-
2023
- 2023-07-28 CN CN202322000522.9U patent/CN220302441U/en active Active
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