Electromagnetic valve for high pressure

Abstract

The utility model provides an electromagnetic valve for high pressure. The electromagnetic valve comprises an electromagnetic valve body, a valve body, an upper cover, a sealing gasket and a lower cover, the upper cover is fixed on the lower cover, the sealing gasket is arranged between the upper cover and the lower cover, the valve body penetrates through the electromagnetic valve body, the electromagnetic valve body is arranged in the lower cover, and the upper cover comprises an air port; the valve body comprises fixed iron, movable iron and a connecting rod; the fixed iron is fixed at the upper end of the lower cover, the movable iron is movably arranged at the lower end of the lower cover, and a reset spring is arranged between the movable iron and the fixed iron; one end of the connecting rod is fixed on the moving iron, and the other end of the connecting rod penetrates through the fixed iron and is connected with the sealing gasket; the electromagnetic valve provided by the utility model is a normally open electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to a high-pressure exhaust electromagnetic valve of a kitchen pressure cooker, in particular to a high-pressure electromagnetic valve. Background Art

[0002] The solenoid valves of rice cookers and electric pressure cookers are usually used to control the discharge of water vapor and the release of pressure. The solenoid valve is a switch device composed of an electromagnet and a valve, and the opening and closing of the valve is controlled according to the on and off of the electromagnet. In rice cookers and electric pressure cookers, the solenoid valve is usually driven by a heating control circuit. After power is turned on, the electromagnet generates a magnetic field, causing the valve to open and close, thereby controlling the discharge of water vapor and the release of pressure.

[0003] Currently, the solenoid valves on the market are all normally closed structures. When there is no power or an accidental power outage, they will be closed and cannot open automatically, which means that the air pressure in the pot cannot be released, and the pressure difference between the inside and outside will cause the lid to be unable to be opened. Utility Model Content

[0004] The main technical problem to be solved by the utility model is that the electromagnetic valve cannot open automatically in case of accidental power failure, so a electromagnetic valve for high pressure is provided.

[0005] In order to solve the above technical problems, the utility model provides a solenoid valve for high pressure, comprising a solenoid valve body, a valve body, an upper cover, a sealing gasket and a lower cover; the upper cover is fixed on the lower cover, the sealing gasket is arranged between the upper cover and the lower cover, the valve body passes through the solenoid valve body, the solenoid valve body is arranged in the lower cover, and the upper cover includes an air port;

[0006] The valve body includes a fixed iron, a moving iron and a connecting rod; the fixed iron is fixed to the upper end of the lower cover, the moving iron is movably arranged at the lower end of the lower cover, and a return spring is arranged between the moving iron and the fixed iron;

[0007] One end of the connecting rod is fixed on the moving iron, and the other end of the connecting rod passes through the fixed iron and is connected to the sealing gasket.

[0008] In a preferred embodiment, the lower cover is provided with an air path connected to the air port of the upper cover; the sealing gasket is used to open or block the connection between the air path and the air port.

[0009] In a preferred embodiment, the connecting rod is made of non-magnetic plastic material.

[0010] In a preferred embodiment, the upper cover and the lower cover are fixed by screws.

[0011] In a preferred embodiment, the lower cover includes a fixed frame, and the solenoid valve body is fixed in the fixed frame;

[0012] The fixed frame comprises a channel, and the valve body is arranged in the channel.

[0013] In a preferred embodiment, the fixed iron is fixed on the fixed frame, and the fixed iron is located at the upper end of the channel.

[0014] In a preferred embodiment, the fixed iron and the fixed frame are integrally formed by injection molding.

[0015] In a preferred embodiment, the moving iron is movably disposed at the lower end of the channel, and the lower end of the channel has a space for the moving iron to move up and down.

[0016] In a preferred embodiment, two ends of the return spring are respectively fixed on the moving iron and the fixed iron.

[0017] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0018] By setting fixed iron and moving iron up and down, and connecting the moving iron with the sealing gasket through a connecting rod, when the power is on, the moving iron moves downward away from the fixed iron under the action of electromagnetic force, driving the sealing gasket downward to block the air port, which is the closed state; when the power is off, the reset spring is used to reset, and the moving iron moves close to the fixed iron under the action of the reset spring, driving the sealing gasket upward to open the air port, which is the open state. When the power is off, the solenoid valve is in the normally open state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a main cross-sectional view of a solenoid valve in the prior art;

[0020] Figure 2 This is an exploded view of the solenoid valve in the preferred embodiment of the utility model;

[0021] Figure 3 It is a main sectional view of the solenoid valve in the preferred embodiment of the utility model.

[0022] Explanation of the reference numerals: 1. solenoid valve body; 2. valve body; 21. fixed iron; 22. moving iron; 23. connecting rod; 24. return spring; 3. upper cover; 31. air port; 4. sealing gasket; 5. lower cover; 51. fixed frame; 52. channel; 6. screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0026] like Figure 1 A common solenoid valve includes a solenoid valve body 101, a valve body, an upper cover, a sealing gasket 104 and a lower cover. The valve body includes a fixed iron 102 and a moving iron 103. The moving iron 103 is arranged above the fixed iron 102. When the solenoid valve body 101 is energized to generate electromagnetic force, the moving iron 103 moves away from the fixed iron 102 under the action of the magnetic force, and at the same time drives the sealing gasket 104 to open to release the pressure in the pot. If the power is off, the moving iron 103 will move closer to the fixed iron 102 under the action of the reset spring 105, and at the same time drive the sealing gasket 104 to close. This is the normally closed state. The normally closed structure will not be able to open automatically in the event of an accidental power outage, and the air pressure in the pot cannot be released, making the pressure difference between the inside and the outside make it difficult to open the pot lid.

[0027] refer to Figure 2-Figure 3 This embodiment provides a solenoid valve for high pressure, which changes the normally closed solenoid valve into a normally open solenoid valve to solve the problem that the gas pressure in the pot cannot be released in the event of an unexpected power outage.

[0028] The solenoid valve provided in this embodiment includes a solenoid valve body 1, a valve body 2, an upper cover 3, a sealing gasket 4 and a lower cover 5; the upper cover 3 is fixed on the lower cover 5, and the upper cover 3 and the lower cover 5 are fixed by screws 6. The sealing gasket 4 is arranged between the upper cover 3 and the lower cover 5, the valve body 2 passes through the solenoid valve body 1, the solenoid valve body 1 is arranged in the lower cover 5, and the upper cover 3 includes an air port 31. The valve body 2 includes a fixed iron 21, a moving iron 22 and a connecting rod 23; the fixed iron 21 is fixed to the upper end of the lower cover 5, the moving iron 22 is movably arranged at the lower end of the lower cover 5, and a reset spring 24 is arranged between the moving iron 22 and the fixed iron 21; one end of the connecting rod 23 is fixed to the moving iron 22, and the other end of the connecting rod 23 passes through the fixed iron 21 and is connected to the sealing gasket 4.

[0029] The lower cover 5 is provided with an air path, which is connected to the air port 31 of the upper cover 3; the sealing gasket 4 is used to open or block the connection between the air path and the air port 31. The air path of the lower cover 5 is connected to the inside of the pressure cooker, and the pressure inside the cooker is released through the sealing gasket 4, which facilitates the pressure relief and opening of the cover.

[0030] The lower cover 5 includes a fixed frame 51 , and the solenoid valve body 1 is fixed in the fixed frame 51 ; the fixed frame 51 includes a channel 52 , and the valve body 2 is arranged in the channel 52 . The solenoid valve body 1 is arranged around the circumference of the channel 52 .

[0031] The fixed iron 21 is fixed on the fixed frame 51 and is located at the upper end of the channel 52. The fixed iron 21 and the fixed frame 51 are integrally formed by injection molding. The moving iron 22 is movably disposed at the lower end of the channel 52, and the lower end of the channel 52 has a space for the moving iron 22 to move up and down.

[0032] The two ends of the return spring 24 are respectively fixed on the moving iron 22 and the fixed iron 21. The elastic force of the return spring 24 is used to pull the moving iron 22, and the moving iron 22 is maintained at a certain distance from the fixed iron 21 in the absence of electromagnetic force. Under this maintenance, the moving iron 22 lifts the sealing gasket 4 through the connecting rod 23, so that the air port 31 is connected with the air path. At this time, the solenoid valve is in a normally open state.

[0033] The connecting rod 23 is made of non-magnetic plastic material, and is riveted together with the moving iron 22 to form a whole. The non-magnetic connecting rod 23 is connected to the sealing gasket 4 through the fixed iron 21 to avoid magnetic field interference and reduce the suction force, thereby increasing the stability and reliability of the solenoid valve. Without changing the appearance and volume, the normally open type is improved to the normally closed type.

[0034] By setting a fixed iron 21 and a moving iron 22 up and down, and connecting the moving iron 22 to the sealing gasket 4 through a connecting rod 23, when the power is on, the moving iron 22 moves downward away from the fixed iron 21 under the action of the electromagnetic force, driving the sealing gasket 4 to block the air port 31 downward, and this is the closed state; when the power is off, the reset spring 24 is used to reset the moving iron 22, and the moving iron 22 moves close to the fixed iron 21 under the action of the reset spring 24, driving the sealing gasket 4 to open the air port 31 upward, and this is the open state. When the power is off, the solenoid valve is in a normally open state.

[0035] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A solenoid valve for high pressure, characterized in that: It includes a solenoid valve body, a valve body, an upper cover, a sealing gasket and a lower cover; the upper cover is fixed on the lower cover, the sealing gasket is arranged between the upper cover and the lower cover, the valve body passes through the solenoid valve body, the solenoid valve body is arranged in the lower cover, and the upper cover includes an air port; The valve body includes a fixed iron, a moving iron and a connecting rod; the fixed iron is fixed to the upper end of the lower cover, the moving iron is movably arranged at the lower end of the lower cover, and a return spring is arranged between the moving iron and the fixed iron; One end of the connecting rod is fixed on the moving iron, and the other end of the connecting rod passes through the fixed iron and is connected to the sealing gasket.

2. A solenoid valve for high pressure according to claim 1, characterized in that: The lower cover is provided with an air path which is communicated with the air port of the upper cover; the sealing gasket is used to open or block the communication between the air path and the air port.

3. A solenoid valve for high pressure according to claim 1, characterized in that: The connecting rod is made of non-magnetic plastic material.

4. A solenoid valve for high pressure according to claim 1, characterized in that: The upper cover and the lower cover are fixed by screws.

5. A solenoid valve for high pressure according to claim 1, characterized in that: The lower cover comprises a fixed frame, and the solenoid valve body is fixed in the fixed frame; The fixed frame comprises a channel, and the valve body is arranged in the channel.

6. A solenoid valve for high pressure according to claim 5, characterized in that: The fixed iron is fixed on the fixed frame, and the fixed iron is located at the upper end of the channel.

7. A solenoid valve for high pressure according to claim 6, characterized in that: The fixed iron and the fixed frame are integrally formed by injection molding.

8. A solenoid valve for high pressure according to claim 5, characterized in that: The moving iron is movably arranged at the lower end of the channel, and the lower end of the channel has a space for the moving iron to move up and down.

9. A solenoid valve for high pressure according to claim 1, characterized in that: Two ends of the return spring are respectively fixed on the moving iron and the fixed iron.

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