CN212536293U - Electromagnet for industrial hydraulic valve with moving iron ejection structure - Google Patents

Abstract

The electromagnet for the industrial hydraulic valve with the moving iron ejection structure comprises a magnet yoke, a coil positioned in the magnet yoke, a guide sleeve positioned in the coil, a static iron core and a moving iron core, wherein a tapered hole is formed in the end surface, close to the moving iron core, of the static iron core, a tapered end matched with the tapered hole is arranged at the end part, close to the static iron core, of the moving iron core, the large-diameter end of the tapered end radially outwards forms a shoulder part, and when the moving iron core and the static iron core are combined, the tapered end enters the tapered hole; when the movable iron core and the static iron core are attracted, the shoulder of the movable iron core is propped against the inner end surface of the static iron core, which is outward of the conical hole; two annular bosses are arranged on the inner wall of the guide sleeve, the height of the annular bosses protruding in the radial direction of the inner wall of the guide sleeve is 0.07-0.15mm, and the annular bosses enable the movable iron core to have a gap with the inner wall of the guide sleeve except the annular bosses. The electromagnet is stable in operation and small in vibration.

Description

Electromagnet for industrial hydraulic valve with moving iron ejection structure

Technical Field

The utility model relates to an electro-magnet, in particular to move ejecting structure of iron electromagnet for industrial hydraulic valve belongs to electro-magnet technical field.

Background

The electromagnet for the hydraulic valve is a power element of an industrial valve reversing unit, a moving iron in the power unit is a key component in a driving unit, the electromagnet structure for the hydraulic valve with a common structure is a push rod and armature (moving iron core) structure, the push rod and the armature are fixedly connected by threads or riveted by partial length, Teflon cloth is adopted for magnetic isolation guide, the moving iron and a static iron adopt a plane attraction structure, and after the push rod and a valve core of an electromagnetic valve are matched and connected with an electromagnetic iron coil to be electrified, the moving iron generates kinetic energy to push the electromagnet of the valve core to complete the action. The prior electrified magnet adopts the structure, has the following problems of small attraction force of the product and unstable operation, and can form resistance to the armature when the Teflon cloth is used for a long time to move forwards or backwards.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that exists on present electro-magnet, provide an move ejecting structure industry of iron electro-magnet for hydraulic valve.

In order to realize the purpose of the utility model, the following technical proposal is adopted: the electromagnet for the industrial hydraulic valve with the moving iron ejection structure comprises a magnet yoke, a coil positioned in the magnet yoke, a guide sleeve positioned in the coil, a static iron core and a moving iron core, wherein the moving iron core is arranged in the guide sleeve in a sliding manner, a push rod is fixedly connected with the moving iron core, a tapered hole is formed in the end face, close to the moving iron core, of the static iron core, the end part, close to the static iron core, of the moving iron core is a tapered end matched with the tapered hole, the diameter of the tapered large-diameter end is smaller than the maximum diameter of the moving iron core, the tapered large-diameter end radially outwards forms a shoulder part, and when the moving iron core and the static iron core are; when the movable iron core and the static iron core are attracted, the shoulder of the movable iron core is propped against the inner end surface of the static iron core, which is outward of the conical hole; two annular bosses are arranged on the inner wall of the guide sleeve, the height of the annular bosses protruding in the radial direction of the inner wall of the guide sleeve is 0.07-0.15mm, and the annular bosses enable the movable iron core to have a gap with the inner wall of the guide sleeve except the annular bosses.

Further, the method comprises the following steps of; the push rod and the movable iron core are fixedly connected together through riveting of the through rod.

This electro-magnet moves iron core and push rod through-rod riveting and becomes an organic whole structure, and the operation is stable, and hydraulic system shakes for a short time, and the direction separates the clearance that magnetic unit adopted the inner ring boss structure to form, has avoided using the problem that Teflon cloth exists, moves the cooperation of the quiet iron core of iron core and adopts the cooperation of awl end, has increased the magnetic pole area when the actuation, and the suction of production is big.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic view showing the annular boss after enlargement.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a magnetic yoke; 2: a coil; 3: a guide sleeve; 4: a stationary iron core; 5: a movable iron core; 6: a push rod; 7: a tapered end; 8: an annular boss; 9: a gap.

As shown in the attached drawing, the electromagnet for the industrial hydraulic valve with the moving iron ejection structure comprises a magnetic yoke 1, a coil 2 positioned in the magnetic yoke, a guide sleeve 3 positioned in the coil, a static iron core 4 and a moving iron core 5, wherein the moving iron core 5 is arranged in the guide sleeve 3 in a sliding manner, two annular bosses 8 are arranged on the inner wall of the guide sleeve, the radial protruding height of each annular boss on the inner wall of the guide sleeve is 0.07-0.15mm, the protruding height is important, the effect is poor when the annular boss is higher or lower, the annular boss makes a gap between the moving iron core and the inner wall of the guide sleeve except the annular boss, the annular boss 8 plays a role in guiding the moving iron core, and the formed gap has a magnetic isolation effect.

Push rod 6 with move 5 fixed connection of iron core, the push rod with move the iron core and pass through the pole riveting fixed connection together, quiet iron core be close to and begin to have the bell mouth on the terminal surface that moves the iron core, the tip that moves the iron core and be close to quiet iron core is the taper end 7 that suits with the bell mouth, the diameter of the big footpath end of taper end is less than the maximum diameter on moving the iron core, the radial outside shoulder that forms of toper big footpath end, when moving iron core and quiet iron core wicking, the shoulder top that moves the iron core is on the outside interior terminal surface in toper aperture of quiet iron core, during the taper end gets into the bell mouth, be the actuation state in figure 1, the taper end is located the bell mouth.

The working principle of the electromagnet is the same as that of the traditional electromagnet.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims (2)

1. Move indisputable ejecting structure electromagnet for industrial hydraulic valve, including yoke, the coil that is arranged in the yoke, be arranged in the guide pin bushing of coil, quiet iron core, move the iron core and slide and set up in the guide pin bushing, the push rod with move iron core fixed connection, its characterized in that: the end surface of the static iron core, which is close to the movable iron core, is provided with a tapered hole, the end part of the movable iron core, which is close to the static iron core, is a tapered end which is adaptive to the tapered hole, the diameter of the large-diameter end of the tapered end is smaller than the maximum diameter of the movable iron core, the large-diameter end of the tapered end forms a shoulder part outwards in the radial direction, when the movable iron core and the static iron core are attracted, the tapered end enters the tapered hole, and the shoulder part of the movable iron core is propped against the inward end surface of the tapered; two annular bosses are arranged on the inner wall of the guide sleeve, the height of the annular bosses protruding in the radial direction of the inner wall of the guide sleeve is 0.07-0.15mm, and the annular bosses enable the movable iron core to have a gap with the inner wall of the guide sleeve except the annular bosses.

2. The electromagnet for the moving iron ejection structure industrial hydraulic valve according to claim 1, wherein: the push rod and the movable iron core are fixedly connected together through riveting of the through rod.

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