Three-way electromagnetic valve with sealing film

Abstract

The utility model discloses a three-way electromagnetic valve with a sealing film, which relates to the technical field of electromagnetic valves and comprises an electromagnetic component, a sealing component and a valve head component, the sealing film is mounted between the electromagnetic component and a valve head, so that the electromagnetic component and the valve head are sealed, and liquid passing through the valve head cannot enter the electromagnetic component. According to the utility model, the inside of the electromagnetic component is prevented from being corroded and rusted, liquid leakage, liquid waste and environment pollution caused by the sealing performance of the shell of the electromagnetic component are avoided, the service life of the product is prolonged, liquid is saved, and the environment is kept clean.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a three-way electromagnetic valve with a sealing film. Background Art

[0002] As a component of automation equipment, the solenoid valve has seen a sharp increase in usage in recent years. The response time of the solenoid valve can be as short as a few milliseconds, and even the pilot solenoid valve can be controlled within tens of milliseconds. Because it is self-contained, it is more sensitive than other automatic control valves. A properly designed solenoid valve coil has very low power consumption and is an energy-saving product. It can also automatically maintain the valve position by simply triggering the action, and does not consume any power at ordinary times. The solenoid valve has a small size, which saves space, is light and beautiful, and has a simple structure and low price. It is easier to install and maintain than other types of actuators such as control valves.

[0003] However, the solenoid valves in the prior art, especially the three-way solenoid valves, are not sealed internally. Specifically, the solenoid assembly and the valve assembly of the solenoid valve are not sealed. This may cause various problems: 1. The liquid passing through the solenoid valve may flow into the solenoid assembly; 2. It may easily cause liquid leakage in the solenoid assembly of the solenoid valve; these problems may cause corrosion and rust inside the solenoid assembly of the solenoid valve, resulting in waste of liquid and environmental pollution, etc., resulting in a reduced service life of the solenoid valve, and problems such as improper switching or switch failure. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a three-way solenoid valve with a sealing film, which solves the problems of rust and corrosion inside the solenoid valve, short service life, waste of liquid and environmental pollution mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a three-way solenoid valve with a sealing film, including an electromagnetic component, a sealing component, and a valve head component, characterized in that: the electromagnetic component includes a yoke, a yoke upper cover, a coil component, a fixed iron core, a spring, a movable iron core, a shell, and a shell back cover; the sealing component includes a sealing plug, a sealing plug positioning piece, a sealing film, and a sealing film positioning piece; the valve head assembly includes an upper valve head, a lower valve head, a sealing ring, and a screw; the shell is sleeved on the yoke, the coil component is inserted into the yoke, the fixed iron core is inserted into the coil component and fixedly connected to the yoke at one end, and a circular groove is provided at the other end; the spring is inserted into the circular groove at the other end of the fixed iron core shaped groove, one end of the movable iron core is inserted into the coil assembly and is in contact with the spring, and the other end is provided with a threaded hole, the yoke upper cover is fixedly connected to the yoke, one end of the sealing plug positioning piece is provided with a thread and is fixedly connected to the other end of the movable iron core, and the other end is fixedly connected to the sealing plug, the sealing film is in a circular ring shape, inserted into the sealing film positioning piece, the inner ring is fixedly connected to the sealing plug positioning piece, and the outer ring is provided with a protrusion, the sealing film positioning piece is installed between the lower valve head and the yoke upper cover, the upper valve head is fixedly connected to the lower valve head, a sealing ring is provided in the middle, the lower valve head is provided with a groove on one side of the sealing film positioning piece, and the upper valve head and the lower valve head are provided with through holes at the four corners, and are fixed to the yoke upper cover by screws passing through the through holes.

[0008] Preferably, two grooves are provided in the middle of the sealing plug positioning piece.

[0009] Preferably, the inner ring of the sealing film is provided with two layers, which are installed in two grooves in the middle of the sealing plug positioning piece.

[0010] Preferably, the sealing film positioning piece is annular in shape, and a protrusion is provided on the outer edge.

[0011] Preferably, a No. 1 inlet and a No. 2 inlet are provided in the upper valve head.

[0012] Preferably, three inlets and outlets are provided in the lower valve head.

[0013] Preferably, a cavity is provided between the upper valve head and the lower valve head, and the plug is arranged in the cavity.

[0014] Preferably, the sealing film and the sealing plug are made of rubber or silicone.

[0015] Preferably, the outer ring protrusion of the sealing film and the outer edge protrusion of the sealing film positioning piece are installed in the groove of the lower valve head.

[0016] Preferably, the coil assembly comprises a bobbin, a coil and an electrical conductor.

[0017] (III) Beneficial effects.

[0018] The utility model provides a three-way solenoid valve with a sealing film, which has the following beneficial effects:

[0019] A sealing film is installed between the electromagnetic component and the valve head to seal the two parts. The liquid passing through the valve head will not enter the electromagnetic component, causing corrosion and rust inside the electromagnetic component, and will not cause liquid leakage due to sealing problems of the outer shell of the electromagnetic component, causing liquid waste and environmental pollution. The service life of the product is improved, liquid is saved and the environment is kept clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the decomposition of the utility model.

[0021] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0022] In the figure: 1. electromagnetic assembly; 11. yoke; 12. yoke upper cover; 13. coil assembly; 131. bobbin; 132. coil; 133. electric wire; 14. fixed iron core; 15. spring; 16. movable iron core; 17. shell; 18. shell back cover; 2. sealing assembly; 21. sealing plug; 22. sealing plug positioning piece; 23. sealing film; 24. sealing film positioning piece; 3. valve head assembly; 31. upper valve head; 311. inlet and outlet No. 1; 312. inlet and outlet No. 2; 32. lower valve head; 321. inlet and outlet No. 3; 33. sealing ring; 34. screw; 35. cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 2 The working principle of the utility model is as follows: an electrically conductive external power supply is connected to the coil. When the solenoid valve is not energized, the sealing plug blocks the No. 1 inlet and outlet due to the elastic force of the spring, and the No. 2 inlet and outlet are connected with the No. 3 inlet and outlet; when the solenoid valve is energized, the coil will generate electromagnetic force, and the movable iron core of the solenoid valve overcomes the spring force and moves downward due to the electromagnetic force, and the sealing plug opens the No. 1 inlet and outlet and blocks the No. 3 inlet and outlet, and the No. 1 inlet and outlet are connected with the No. 2 inlet and outlet.

[0025] The utility model provides a three-way solenoid valve with a sealing film, comprising an electromagnetic component, a sealing component, and a valve head component. The electromagnetic component comprises a yoke, a yoke upper cover, a coil component, a fixed iron core, a spring, a movable iron core, an outer shell, and an outer shell back cover. The sealing component comprises a sealing plug, a sealing plug positioning piece, a sealing film, and a sealing film positioning piece. The valve head component comprises an upper valve head, a lower valve head, a sealing ring, and a screw. The outer shell is sleeved on the yoke, the coil component is inserted into the yoke, the fixed iron core is inserted into the coil component and fixedly connected to the yoke at one end, and a circular groove is provided at the other end. The spring is inserted into the circular groove at the other end of the fixed iron core, and the movable iron core is inserted into the circular groove at the other end of the fixed iron core. One end of the coil assembly is in contact with the spring, and the other end is provided with a threaded hole. The yoke upper cover is fixedly connected to the yoke. One end of the sealing plug positioning piece is provided with a thread and fixedly connected to the other end of the movable iron core, and the other end is fixedly connected to the sealing plug. The sealing film is in a circular ring shape and is inserted into the sealing film positioning piece. The inner ring is fixedly connected to the sealing plug positioning piece, and the outer ring is provided with a protrusion. The sealing film positioning piece is installed between the lower valve head and the yoke upper cover. The upper valve head is fixedly connected to the lower valve head, and a sealing ring is provided in the middle. The lower valve head is provided with a groove on one side of the sealing film positioning piece, and the upper valve head and the lower valve head are provided with through holes at the four corners, which are fixed to the yoke upper cover by screws passing through the through holes.

[0026] The sealing plug positioning piece is provided with two grooves in the middle, and the sealing film inner ring is provided with two layers, which are installed in the two grooves in the middle of the sealing plug positioning piece, so that the sealing film inner ring and the sealing plug positioning piece are in a sealed connection. The sealing film positioning piece is annular in shape, and a protrusion is provided on the outer edge. The outer ring protrusion of the sealing film and the outer edge protrusion of the sealing film positioning piece are installed in the groove of the lower valve head and are sealed.

[0027] Inlet No. 1 and inlet No. 2 are provided in the upper valve head, inlet No. 3 is provided in the lower valve head, a cavity is provided between the upper valve head and the lower valve head, a plug is provided in the cavity, and the plug drives the plug to make reciprocating linear motion in the cavity through the movement of the sealing plug positioning piece, so that two of the three inlets and outlets are always kept in a connected state.

[0028] The sealing film and the sealing plug are made of rubber or silicone. The material of the sealing film is rubber or silicone and has a certain elasticity. When the utility model is not powered on, the sealing film is in a normal state. When powered on, the sealing film is in a stretched state, but it will not destroy the sealing between the sealing film and the sealing plug positioning piece, nor will it destroy the sealing between the lower valve head and the sealing film positioning piece. Similarly, the material of the sealing plug is also rubber or silicone. When the power is off, when the sealing plug blocks the No. 1 inlet and outlet, the contact part will be slightly deformed so that the No. 1 inlet and outlet can be in a sealed and blocked state. When the power is on, when the sealing plug blocks the No. 3 inlet and outlet, the contact part will be slightly deformed so that the No. 3 inlet and outlet can be in a sealed and blocked state.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way solenoid valve with a sealing film, comprising a solenoid assembly (1), a sealing assembly (2), and a valve head assembly (3), characterized in that: The electromagnetic assembly (1) comprises a yoke (11), a yoke upper cover (12), a coil assembly (13), a fixed iron core (14), a spring (15), a movable iron core (16), a housing (17), and a housing back cover (18); the sealing assembly (2) comprises a sealing plug (21), a sealing plug positioning member (22), a sealing film (23), and a sealing film positioning member (24); the valve head assembly (3) comprises an upper valve head (31), a lower valve head (32), a sealing ring (33), and a screw (34); the housing (17) is sleeved on the yoke (11); the coil assembly (13) is inserted into the yoke (11); the fixed iron core (14) is inserted into the coil assembly (13) and fixedly connected to the yoke (11) at one end; a circular groove is provided at the other end; the spring (15) is inserted into the circular groove at the other end of the fixed iron core (14); the movable iron core (16) is inserted into the coil assembly (13) and fixedly connected to the yoke (11) at one end; and a circular groove is provided at the other end. ) one end is in contact with the spring (15), and the other end is provided with a threaded hole, the yoke iron upper cover (12) is fixedly connected to the yoke iron (11), one end of the sealing plug positioning piece (22) is provided with a thread and is fixedly connected to the other end of the movable iron core (16), and the other end is fixedly connected to the sealing plug (21), the sealing film (23) is in an annular shape and is inserted into the sealing film positioning piece (24), the inner ring is fixedly connected to the sealing plug positioning piece (22), and the outer ring is provided with a protrusion, the sealing film positioning piece (24) is installed between the lower valve head (32) and the yoke iron upper cover (12), the upper valve head (31) is fixedly connected to the lower valve head (32), and a sealing ring (33) is provided in the middle, the lower valve head (32) is provided with a groove on one side of the sealing film positioning piece (24), the upper valve head (31) and the lower valve head (32) are provided with through holes at four corners, and are fixed to the yoke iron upper cover (12) by screws (34) passing through the through holes.

2. A three-way solenoid valve with a sealing film according to claim 1, characterized in that: Two grooves are provided in the middle of the sealing plug positioning piece (22).

3. A three-way solenoid valve with a sealing film according to claim 2, characterized in that: The sealing film (23) has two layers on its inner ring and is installed in two grooves in the middle of the sealing plug positioning piece (22).

4. A three-way solenoid valve with a sealing film according to claim 1, characterized in that: The sealing film positioning piece (24) is annular in shape, and a protrusion is provided on the outer edge.

5. The three-way solenoid valve with a sealing film according to claim 1, characterized in that: The upper valve head (31) is provided with a first inlet and outlet (311) and a second inlet and outlet (312).

6. A three-way solenoid valve with a sealing film according to claim 1, characterized in that: The lower valve head (32) is provided with a third inlet and outlet (321).

7. The three-way solenoid valve with a sealing film according to claim 1, characterized in that: A cavity (35) is provided between the upper valve head (31) and the lower valve head (32), and the plug (21) is arranged in the cavity (35).

8. The three-way solenoid valve with a sealing film according to claim 1, characterized in that: The sealing film (23) and the sealing plug (21) are made of rubber or silicone.

9. The three-way solenoid valve with a sealing film according to claim 4, characterized in that: The outer ring protrusion of the sealing film (23) and the outer edge protrusion of the sealing film positioning piece (24) are installed in the groove of the lower valve head (32).

10. The three-way solenoid valve with a sealing film according to claim 1, characterized in that: The coil assembly (13) comprises a bobbin (131), a coil (132) and an electric conductor (133).

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