Realization device for small-size coil assembly with uniform magnetic field

Abstract

The utility model discloses an implementation device for a small-size coil group with a uniform magnetic field, which can provide a large-area uniform magnetic field by adjusting the magnetic field intensity, greatly reduces the equipment size and improves the convenience of material magnetic detection. According to the technical scheme, the implementation device for the small-size coil assembly with the uniform magnetic field comprises four coils, every two coils form a group, the coils are arranged at intervals, the four coils obtain the magnetic field with the same axial direction after being electrified, the four coils are connected together through lead screws and sliding rods, and the lead screws are connected with the sliding rods through the lead screws and the sliding rods. The distance between the two coils is adjusted by driving the lead screw to rotate, the coils are sleeved with shielding covers, the two sides of each shielding cover are provided with an inlet and an outlet respectively, the inlets and the outlets penetrate through the space between the two coils, and a detection position is arranged in the middle of the two coils between the inlets and the outlets. The detected magnetic material is placed at the detection position for magnetic detection; the device can be widely applied to the field of magnetic force detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of realization device of uniform magnetic field small size coil group, belong to magnetic detection technical field. BACKGROUND

[0002] In some material magnetic detection process, generally utilize the design concept of Helmholtz coil, form highly uniform magnetic field in specific area, but the uniform magnetic field area is generally very small, to meet the test of product, need to make the equipment that generates magnetic field larger, to provide larger area uniform magnetic field, which leads to detection equipment is huge, bring great inconvenience to material magnetic detection. UTILITARY MODEL CONTENT

[0003] The utility model overcomes the insufficient of prior art, provides a kind of realization device of uniform magnetic field small size coil group, by adjusting magnetic field intensity, can provide larger area uniform magnetic field, equipment size is greatly reduced, improve the convenience of material magnetic detection.

[0004] In order to solve the above technical problems, the utility model adopts the technical scheme of: a kind of realization device of uniform magnetic field small size coil group, including four coils, the coil is a group of two, interval arrangement each other, four the coil is energized to obtain the magnetic field of axial direction consistent, four the coil is connected together by screw rod and slide bar between, the interval between two groups of coils is adjusted by driving screw rod rotation, the outside of the coil is equipped with shield cover, the two sides of the shield cover are respectively provided with inlet and outlet, the inlet and outlet are arranged through the space between two groups of coils, and detection position is provided in the middle of two groups of coils between inlet and outlet, and the magnetic material to be detected is placed in detection position and is subjected to magnetic detection.

[0005] Further, the coil includes annular coil body and winding group wound around the outer edge of the coil body, the outer edge of the coil body is provided with annular groove, and the winding group is matched and arranged in the groove.

[0006] Further, the screw rod and the slide bar are arranged along the axial direction of the coil body, and the connection rotation direction of the two groups of coils and the screw rod is opposite.

[0007] Further, the screw rod is driven by motor through end connection.

[0008] Further, a plurality of magnetic force sensors are arranged around the detection position, and the magnetic force sensors are used to monitor the magnetic field intensity of the detection position.

[0009] The utility model discloses a detection position is arranged between two groups of coils, and the detection position is through the coil and shield cover, and the magnetic material of being detected is convenient for the in and out, and the magnetic field intensity at the detection position in the middle of coil is kept uniform and stable by adjusting the interval distance between two groups of coils, and the utility model discloses the magnetic field superposition of four coils greatly improves the area of the uniform magnetic field region at the detection position, and compared with the past, the volume of magnetic field equipment is greatly reduced, and the two groups of coils are driven to move towards each other or away from each other by motor drive screw rod, and the magnetic field uniform and stable of detection position is further stabilized. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model makes further explanation in combination with the drawings.

[0011] Figure 1 It is the structure schematic diagram of the utility model.

[0012] Figure 2 It is the whole structure schematic diagram of the utility model.

[0013] Figure 3 It is the side cross section structure schematic diagram of the utility model.

[0014] Figure 4 It is the overhead cross section structure schematic diagram of the utility model.

[0015] In the drawing: 1 is the coil, 2 is the screw rod, 3 is the shield cover. DETAILED DESCRIPTION

[0016] The utility model makes further explanation in combination with the specific embodiment.

[0017] For example, Figure 1 , Figure 2 and Figure 3As shown, the utility model discloses a realization device of uniform magnetic field small size coil group, including four coils 1, the coil 1 is a group two by two, is spaced apart each other in vertical direction, and the interval space between two groups of coils 1 is as the detection space of magnetic material, four the coil 1 obtains the magnetic field of axial direction consistency after being electrified, according to actual demand, the required magnetic field intensity and direction are obtained through the size and direction of adjusting access current, four the coil 1 between is connected together through lead screw 2 and slide bar, and the coil 1 includes annular coil body and winding group that is wound around coil body outer edge, the outer edge of coil body is provided with annular groove, and the winding group is matched and set in the recess, the lead screw 2 and slide bar are all along the axial direction of coil body and set, and the connecting rotation direction of two groups of coils 1 and lead screw 2 is opposite, the lead screw 2 is driven through end connection motor (not shown in the drawing motor), the outside of coil 1 is equipped with shield 3, shield 3 places external magnetic field interference detection, the two sides of shield 3 are provided with inlet and outlet respectively, the inlet and outlet are set through the space between two groups of coils, and the detection position is set in the middle of two groups of coils between inlet and outlet, and the magnetic material to be detected is placed in the detection position and carries out magnetic detection, a plurality of magnetic force sensors are set around the detection position, and the magnetic force sensor is used for monitoring the magnetic field intensity of detection position, the interval between two groups of coils 1 is adjusted by driving lead screw 2 to rotate, and the magnetic field intensity of detection position is corrected and adjusted, so that the magnetic field of detection position remains uniform and stable.

[0018] The utility model sets up detection position in the space between two groups of coils 1, and the detection position penetrates coil 1 and shield 3, which facilitates the entry and exit of the magnetic material to be detected, and the magnetic field intensity at the detection position in the middle of coil 1 remains uniform and stable by adjusting the interval distance between two groups of coils 1, facilitating detection.

[0019] The utility model adopts the magnetic field superposition of four coils 1, which greatly improves the area of the uniform magnetic field region at the detection position, greatly reduces the volume of the magnetic field equipment compared to the past, and further stabilizes the uniform and stable magnetic field of the detection position by driving the lead screw to drive two groups of coils to move towards each other or away from each other.

[0020] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. An apparatus for implementing a small-size coil set of a uniform magnetic field, characterized by, The application relates to a magnetic field detection device, which comprises four coils (1), the coils (1) are arranged in two groups and are spaced apart from each other, the four coils (1) generate axial magnetic fields after being electrified, the four coils (1) are connected together through lead screws (2) and slide rods, the interval between the two groups of coils (1) is adjusted by driving the lead screws (2) to rotate, the coils (1) are sleeved with shielding covers (3), the two sides of the shielding covers (3) are respectively provided with inlets and outlets, the inlets and outlets penetrate the space between the two groups of coils, and the middle parts of the two groups of coils between the inlets and the outlets are provided with detection positions, and the magnetic materials to be detected are placed on the detection positions for magnetic detection.

2. The realization of a small-size coil set of uniform magnetic field according to claim 1, characterized in that, The coil (1) comprises a ring-shaped coil body and a winding group which is wound around the outer edge of the coil body, a ring-shaped groove is arranged on the outer edge of the coil body, and the winding group is arranged in the groove.

3. The realization of a small-size coil set of uniform magnetic field according to claim 2, characterized in that, The lead screws (2) and the slide rods are arranged along the axial direction of the coil body, and the two groups of coils (1) are connected to the lead screws (2) in opposite rotating directions.

4. A device for implementing a small-size coil set of a uniform magnetic field according to claim 2 or 3, characterized in that, The lead screws (2) are driven by motors through end connections.

5. The device for implementing a small-size coil set of a uniform magnetic field according to claim 1, characterized in that, A plurality of magnetic force sensors are arranged around the detection position, and the magnetic force sensors are used for monitoring the magnetic field intensity of the detection position.

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