Flow-adjustable electromagnetic valve

Abstract

The utility model discloses an electromagnetic valve with adjustable flow, which comprises a valve body, a movable iron core and a valve which are connected in a sliding manner are arranged in the valve body, one end of the valve extends into a flow channel of the valve body, the other end of the valve is connected with the movable iron core, a first electromagnetic coil is arranged on the periphery of the movable iron core, and fixing mechanisms are arranged on two sides of the movable iron core. The fixing mechanism comprises adjusting iron cores slidably connected with the valve body, second electromagnetic coils are arranged around the adjusting iron cores, adjusting grooves corresponding to the adjusting iron cores are formed in the two sides of the movable iron core, the ends of the adjusting iron cores extend into the adjusting grooves, and the adjusting grooves are formed in the axis direction of the movable iron core. A first spring is arranged between the movable iron core and the valve body, a second spring is arranged between the adjusting iron core and the valve body, and flow adjustment is achieved while the opening degree of the movable iron core under power failure is guaranteed through the adjusting iron core.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic valves, and more specifically relates to a flow-adjustable electromagnetic valve. Background Art

[0002] Solenoid valves are common industrial equipment and are basic automation components used to control fluids. However, most solenoid valves on the market are classified as normally closed or normally open. They are opened or closed after power is supplied, but continuous power supply is required to maintain the state. A Chinese patent with publication number CN217539633U discloses a flow regulating solenoid valve, which locks and fixes the movable iron core after power is supplied by a locking slide pin block, so that the movable iron core can be kept open when the power supply to the solenoid valve is stopped, thereby achieving energy saving.

[0003] However, the structure in the above patent can only put the solenoid valve in two states: open or closed, and cannot play its role in regulating flow. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a flow-adjustable electromagnetic valve, which can adjust the flow while ensuring the opening of the movable valve body.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flow-adjustable solenoid valve, comprising a valve body, a moving iron core and a valve in a sliding connection are arranged in the valve body, one end of the valve extends into the flow channel of the valve body, and the other end is connected to the moving iron core, a first electromagnetic coil is arranged around the moving iron core, and a fixing mechanism is arranged on both sides of the moving iron core, the fixing mechanism comprises an adjusting iron core in sliding connection with the valve body, a second electromagnetic coil is arranged around the adjusting iron core, and adjusting grooves corresponding to the adjusting iron core are arranged on both sides of the moving iron core, the end of the adjusting iron core extends into the adjusting groove, and a plurality of adjusting grooves are arranged along the axial direction of the moving iron core, a first spring is arranged between the moving iron core and the valve body, and a second spring is arranged between the adjusting iron core and the valve body.

[0006] Furthermore, the size of the adjustment groove is the same as the size of the end of the adjustment iron core, the adjustment grooves on the same side are arranged at intervals, and the adjustment grooves on both sides correspond to each other one by one.

[0007] Furthermore, the axial length of the adjustment groove is greater than the diameter of the adjustment core, the adjustment grooves on the same side are arranged at intervals, and the adjustment grooves on both sides are arranged alternately, wherein the adjustment groove above one side overlaps with the adjacent adjustment groove below the other side, and the overlapping distance is the same as the diameter of the adjustment core.

[0008] Furthermore, displacement sensors are provided on both the moving iron core and the adjusting iron core.

[0009] Furthermore, a sealing ring is provided on the valve body.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the moving iron core on the solenoid valve is in a normally closed state, and the adjusting iron core is in an extended state. When the moving iron core rises to a certain height, the adjusting iron core is extended into the adjusting slot to fix the moving iron core. At this time, the opening position of the moving iron core can still be maintained after the first electromagnetic coil is powered off. Moreover, since adjusting slots at different positions are provided, when the adjusting iron core is extended into adjusting slots at different positions, the opening of the valve can be changed to achieve flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the flow-adjustable solenoid valve in Embodiment 1 of the present utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the flow-adjustable solenoid valve in the second embodiment of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the first gear opening of the flow-adjustable solenoid valve in the second embodiment of the present utility model.

[0014] Figure numerals: valve body 1; moving iron core 2; valve 3; valve body flow channel 4; first electromagnetic coil 5; adjusting iron core 6; second electromagnetic coil 7; adjusting groove 8; first spring 9; second spring 10; sealing ring 11. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0017] Reference Figures 1 to 3 The utility model is further described.

[0018] Embodiment 1:

[0019] A flow-adjustable solenoid valve comprises a valve body 1, wherein a moving iron core 2 and a valve 3 in sliding connection are arranged in the valve body 1, one end of the valve 3 extends into a valve body flow channel 4, and the other end is connected to the moving iron core 2, a first electromagnetic coil 5 is arranged around the moving iron core 2, and fixing mechanisms are arranged on both sides of the moving iron core 2, the fixing mechanisms comprise an adjusting iron core 6 in sliding connection with the valve body 1, a second electromagnetic coil 7 is arranged around the adjusting iron core 6, adjusting grooves 8 corresponding to the adjusting iron core 6 are arranged on both sides of the moving iron core 2, the ends of the adjusting iron core 6 extend into the adjusting grooves 8, and a plurality of adjusting grooves 8 are arranged along the axial direction of the moving iron core 2, a first spring 9 is arranged between the moving iron core 2 and the valve body 1, and a second spring 10 is arranged between the adjusting iron core 6 and the valve body 1.

[0020] like Figure 1 As shown, in this example, preferably, the size of the adjustment slot 8 is the same as the size of the end of the adjustment core 6, the adjustment slots 8 on the same side are arranged at intervals, and the adjustment slots 8 on both sides correspond to each other one by one.

[0021] like Figure 1 As shown, the moving iron core 2 on the solenoid valve is in a normally closed state, and the adjusting iron core 6 is in an extended state. The second electromagnetic coil 7 is first energized to make the end of the adjusting iron core 6 extend from the adjusting slot 8, and then the first electromagnetic coil 5 is energized, and the moving iron core 2 rises. After rising to a certain height, the second electromagnetic coil 7 is powered off, and the adjusting iron core 6 re-extends into the adjusting slot 8 under the elastic force of the second spring 10 to fix the moving iron core 2. At this time, the opening position of the moving iron core 2 can be maintained after the first electromagnetic coil 5 is powered off, and since the adjusting slots 8 at different positions are set, when the adjusting iron core 6 extends into the adjusting slots 8 at different positions, the opening of the valve 3 can be changed to achieve flow regulation.

[0022] In this example, preferably, displacement sensors are provided on the moving iron core 2 and the adjusting iron core 6 to detect the displacement of the moving iron core 2 and the adjusting iron core 6 .

[0023] like Figure 1 As shown, in this example, preferably, a sealing ring 11 is provided on the valve body 1 .

[0024] Embodiment 2:

[0025] A flow-adjustable solenoid valve comprises a valve body 1, wherein a moving iron core 2 and a valve 3 in sliding connection are arranged in the valve body 1, one end of the valve 3 extends into a valve body flow channel 4, and the other end is connected to the moving iron core 2, a first electromagnetic coil 5 is arranged around the moving iron core 2, and fixing mechanisms are arranged on both sides of the moving iron core 2, the fixing mechanisms comprise an adjusting iron core 6 in sliding connection with the valve body 1, a second electromagnetic coil 7 is arranged around the adjusting iron core 6, adjusting grooves 8 corresponding to the adjusting iron core 6 are arranged on both sides of the moving iron core 2, the ends of the adjusting iron core 6 extend into the adjusting grooves 8, and a plurality of adjusting grooves 8 are arranged along the axial direction of the moving iron core 2, a first spring 9 is arranged between the moving iron core 2 and the valve body 1, and a second spring 10 is arranged between the adjusting iron core 6 and the valve body 1.

[0026] like Figure 2 As shown, in this example, preferably, the axial length of the adjustment slot 8 is greater than the diameter of the adjustment core 6, the adjustment slots 8 on the same side are arranged at intervals, and the adjustment slots 8 on both sides are arranged alternately, wherein the adjustment slot 8 on the upper side of one side overlaps with the adjacent adjustment slot 8 on the lower side of the other side, and the overlapping distance is the same as the diameter of the adjustment core 6.

[0027] like Figure 2 and Figure 3 As shown, the moving iron core 2 on the solenoid valve is in a normally closed state, the adjusting iron core 6 is in an extended state, and the adjusting iron core 6 on one side extends into the adjusting groove 8 on the corresponding side of the moving iron core 2 under the elastic force of the second spring 10, and the adjusting iron core 6 on the other side abuts against the surface of the moving iron core 2;

[0028] During adjustment, the first electromagnetic coil 5 is energized to make the core rise, and the end of the regulating core 6 extending into the regulating slot 8 slides in the regulating slot 8 until the regulating core 6 contacts the lower side of the regulating slot 8, and the valve 3 reaches the first gear opening. At this time, the regulating slot 8 on the other side is just aligned with the regulating core 6, and the regulating core 6 will extend into the regulating slot 8 under the elastic force of the second spring 10 and contact the upper side of the regulating slot 8. After the first electromagnetic coil 5 is powered off, the movable core 2 can be supported by the regulating core 6 on one side to keep the first gear opening.

[0029] When the second gear opening is required, the adjusting iron core 6 ( Figure 3 The left side) extends out of the adjustment slot 8 under the drive of the second electromagnetic coil 7, and the other side ( Figure 3 The adjusting iron core 6 for supporting is maintained, and the moving iron core 2 can continue to rise until the other side ( Figure 3 The adjusting core 6 on the right side contacts the lower side of the adjusting slot 8, and one side ( Figure 3The regulating iron core 6 extended outward from the left side re-extends into the regulating slot 8 to support the moving iron core 2. The two sides alternately support the moving iron core 2, and the valve 3 is opened or closed step by step to adjust the flow rate, and can also maintain the opening when the power is off.

[0030] The other technical features in this example are the same as those in Example 1.

[0031] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A flow adjustable solenoid valve, characterized in that: It includes a valve body, in which a moving iron core and a valve are provided in a sliding connection, one end of the valve extends into the flow channel of the valve body, and the other end is connected to the moving iron core, a first electromagnetic coil is provided around the moving iron core, and fixing mechanisms are provided on both sides of the moving iron core, the fixing mechanisms include an adjusting iron core slidably connected to the valve body, a second electromagnetic coil is provided around the adjusting iron core, and adjusting grooves corresponding to the adjusting iron core are provided on both sides of the moving iron core, the ends of the adjusting iron core extend into the adjusting grooves, and a plurality of adjusting grooves are provided along the axial direction of the moving iron core, a first spring is provided between the moving iron core and the valve body, and a second spring is provided between the adjusting iron core and the valve body.

2. The flow adjustable solenoid valve according to claim 1, characterized in that: The size of the adjustment slot is the same as the size of the end of the adjustment iron core, the adjustment slots on the same side are arranged at intervals, and the adjustment slots on both sides correspond to each other one by one.

3. The flow adjustable solenoid valve according to claim 1, characterized in that: The axial length of the adjustment groove is greater than the diameter of the adjustment core. The adjustment grooves on the same side are arranged at intervals, and the adjustment grooves on both sides are arranged alternately. There is an overlap between the upper adjustment groove on one side and the adjacent lower adjustment groove on the other side, and the overlap distance is the same as the diameter of the adjustment core.

4. The flow adjustable solenoid valve according to claim 1, characterized in that: The moving iron core and the adjusting iron core are both provided with displacement sensors.

5. The flow adjustable solenoid valve according to claim 1, characterized in that: A sealing ring is arranged on the valve body.

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