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CN-121972294-A - High magnetic field constant temperature type vertical ring magnetic separator

CN121972294ACN 121972294 ACN121972294 ACN 121972294ACN-121972294-A

Abstract

The invention relates to the technical field of mineral separation equipment, in particular to a high-magnetic-field constant-temperature type vertical ring magnetic separator which comprises a frame, an upper iron yoke, an excitation winding and a lower iron yoke, wherein a cooling box body is sleeved outside the lower iron yoke, the excitation winding is completely immersed in a cooling medium in the cooling box body, the excitation winding is formed by stacking a plurality of wire cakes in sequence along the axial direction, the wire cakes are fastened into a whole through a plurality of groups of binding assemblies distributed in the circumferential direction in a serial-parallel or serial-parallel combined mode, the wire cakes comprise a plurality of groups of mutually sleeved coil packages, the coil packages in the same group of wire cakes are connected in series, and a spacing assembly is arranged between every two adjacent coil packages. The silicon steel plate equidistant components provide fixed gaps for adjacent coil packages, the gaps form circulation channels for cooling media, the cooling media can flow in the gaps, heat generated on the surfaces of the coil packages can be directly taken away, and heat accumulation in the coil packages is avoided.

Inventors

  • WANG GUOZHOU
  • WANG CHAODONG
  • SUN LEI

Assignees

  • 潍坊国特矿山设备有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (9)

  1. 1. A high magnetic field constant temperature type vertical ring magnetic separator comprises a frame (1), an upper iron yoke (8), an excitation winding (11) and a lower iron yoke (12), wherein a swivel (5) is arranged at the top of the frame (1), the upper iron yoke (8) and the lower iron yoke (12) are respectively arranged at the inner side and the outer side of the swivel (5), the high magnetic field constant temperature type vertical ring magnetic separator is characterized in that a cooling box body (3) is sleeved outside the lower iron yoke (12), the excitation winding (11) is completely immersed in a cooling medium in the cooling box body (3), a medium inlet (2) is arranged at one side of the bottom of the cooling box body (3), a medium outlet (10) is arranged at one side of the top of the cooling box body (3), the medium outlet (10) and the medium inlet (2) are jointly connected into a circulating cooling system, the excitation winding (11) is formed by sequentially stacking a plurality of wire cakes (14) along the axial direction, the wire cakes (14) are connected in series, parallel or serial-parallel combination, the wire cakes (14) are fastened through a plurality of bundling assemblies (13) which are distributed in a plurality of groups, the wire cakes (14) are mutually connected in series, and the wire cakes (15) are sleeved together in a series, and each wire (15) are arranged between adjacent wire assemblies (15), forming interlayer cooling channels and optimizing magnetic field distribution.
  2. 2. The high-magnetic-field constant-temperature vertical ring magnetic separator according to claim 1, wherein the bundling assembly (13) comprises a pressing plate (16) and a bottom plate (18), the pressing plate (16) is attached to the upper end face of the uppermost wire cake (14), the bottom plate (18) is attached to the lower end face of the lowermost wire cake (14), and the bottom plate (18) is fixedly connected with the pressing plate (16) through two groups of studs (17).
  3. 3. The high-magnetic-field constant-temperature type vertical ring magnetic separator according to claim 2, wherein the spacing component is of a split type design and comprises a plurality of groups of silicon steel plates (20) which are in one-to-one correspondence with the bundling components (13), the silicon steel plates (20) are arranged between each two adjacent coil packs (15), and two ends of each silicon steel plate (20) are respectively spliced with the pressing plate (16) and the bottom plate (18).
  4. 4. The high-magnetic-field constant-temperature type vertical ring magnetic separator as claimed in claim 3, wherein the silicon steel plate (20) at the bent angle of the coil pack (15) is arc-shaped.
  5. 5. The high-magnetic-field constant-temperature type standing ring magnetic separator as set forth in claim 2, wherein the spacing assembly is integrally designed and comprises an annular base (23), a plurality of groups of vertical plates (24) which are distributed at intervals are integrally arranged on the upper end face of the base (23) along the length direction and the width direction, an arc-shaped plate (25) is integrally arranged on the upper end face of a bent angle of the base (23), the vertical plates (24) and the arc-shaped plate (25) are both spliced with the pressing plate (16), and the base (23) is spliced with the bottom plate (18).
  6. 6. The high-magnetic-field constant-temperature type standing ring magnetic separator as claimed in claim 2, wherein a plurality of groups of flow channels (19) are arranged on the lower end surface of the bottom plate (18).
  7. 7. The high-magnetic-field constant-temperature vertical ring magnetic separator as claimed in claim 1, wherein insulating division bars are arranged between adjacent wire cakes (14).
  8. 8. The high-magnetic-field constant-temperature vertical ring magnetic separator according to claim 7, wherein the insulating division bars comprise a first division bar (27) and a second division bar (28), the first division bars (27) are provided with a plurality of groups, the first division bars (27) are arranged at two ends of a wire cake (14) in the length direction, the second division bars (28) are provided with a plurality of groups, and the second division bars (28) are arranged at two sides of the wire cake (14) in the width direction.
  9. 9. The high-magnetic-field constant-temperature type vertical ring magnetic separator according to claim 8, wherein a plurality of groups of second parting strips (28) are obliquely arranged, and an included angle alpha between the second parting strips (28) and a main flow direction of cooling medium is 45 degrees to 60 degrees.

Description

High magnetic field constant temperature type vertical ring magnetic separator Technical Field The invention relates to the technical field of mineral separation equipment, in particular to a high-magnetic-field constant-temperature type vertical ring magnetic separator. Background The vertical ring high gradient magnetic separator is one of the core equipments for wet separation of weak magnetic ore and purification of non-metal ore, and its working principle is that strong magnetic field is produced by exciting winding, closed magnetic circuit is formed by upper and lower yokes, magnetic medium is filled in the swivel between the yokes and winding, the lower part of the swivel is immersed in ore pulp, the magnetized magnetic medium adsorbs magnetic ore particles, after rotating to upper part along with swivel, the ore particles are washed down to collecting box by high pressure washing water, and sorting operation is completed. In actual industrial production, in order to improve separation efficiency and separation precision, a vertical ring magnetic separator generally adopts a high magnetic field design. At present, the magnetic field intensity of the high-gradient vertical ring magnetic separator is mostly within 18000GS, if the magnetic field intensity is further improved to 20000GS or above, the heat inside the winding is quickly accumulated due to the current thermal effect, and the coil burning is extremely easy to occur. In order to avoid the problems, the existing vertical ring magnetic separator usually adopts a mode of stopping the machine periodically for cooling, and restarting the equipment after the temperature of the exciting winding is reduced to a safe range. However, the intermittent operation mode interrupts the continuous production flow, remarkably reduces the production efficiency, and is difficult to meet the requirements of industrial production on continuity and stability. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a high-magnetic-field constant-temperature type standing ring magnetic separator, which aims to realize the overall high-efficiency constant-temperature heat dissipation of an excitation winding, avoid frequent shutdown of equipment due to overheating and ensure continuous and stable operation under the working condition of a high magnetic field. The high-magnetic-field constant-temperature type vertical ring magnetic separator comprises a frame, an upper iron yoke, an exciting winding and a lower iron yoke, wherein a rotating ring is arranged at the top of the frame, the upper iron yoke and the lower iron yoke are respectively arranged on the inner side and the outer side of the rotating ring, a cooling box body is sleeved outside the lower iron yoke, the exciting winding is completely immersed in cooling medium in the cooling box body, a medium inlet is arranged on one side of the bottom of the cooling box body, a medium outlet is arranged on one side of the top of the cooling box body, the medium outlet and the medium inlet are jointly connected into a circulating cooling system, the exciting winding is formed by stacking a plurality of wire cakes in sequence along the axial direction, a plurality of wire cakes are connected in series, parallel or combined in series-parallel, the wire cakes are fastened into a whole through a plurality of groups of binding assemblies distributed in the circumferential direction, the wire cakes comprise a plurality of groups of mutually sleeved coil packages, the coil packages in the same group of wire cakes are connected in series, and a spacing assembly made of silicon steel is arranged between the adjacent coil packages. Preferably, the bundling assembly comprises a pressing plate and a bottom plate, wherein the pressing plate is attached to the upper end face of the uppermost layer of wire cake, the bottom plate is attached to the lower end face of the lowermost layer of wire cake, and the bottom plate is fixedly connected with the pressing plate through two groups of studs. Preferably, the interval assembly is of a split type design and comprises a plurality of groups of silicon steel plates corresponding to the bundling assemblies one by one, the silicon steel plates are arranged between each two adjacent coil packs, and two ends of each silicon steel plate are respectively spliced with the pressing plate and the bottom plate. Preferably, the silicon steel plate at the bending angle of the coil is arc-shaped. Preferably, the spacing component is of an integrated design and comprises an annular base, a plurality of groups of vertical plates which are distributed at intervals are integrally arranged on the upper end face of the base along the length direction and the width direction, an arc-shaped plate is integrally arranged on the upper end face of the bent corner of the base, the vertical plates and the arc-shaped plate are both inserted with the pressing plate, and the bas