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CN-121972396-A - Fine screening device and method for fine iron powder

CN121972396ACN 121972396 ACN121972396 ACN 121972396ACN-121972396-A

Abstract

The invention discloses a fine screening device and a screening method for iron fine powder, which belong to the technical field of iron fine powder screening, wherein the fine screening device for iron fine powder comprises a blanking pipe, a screening mechanism is arranged at the bottom of the blanking pipe, a supporting mechanism for supporting and vibrating the screening mechanism is arranged below the blanking pipe, the screening mechanism is arranged at the top of the supporting mechanism and comprises a second screening component for screening materials and a first screening component for matching with the second screening component to screen the materials, the second screening component is arranged in the first screening component, and the first screening component comprises a limiting storage pipe; through the mutually supporting of multi-structure, make the user can carry out the fast adjustment to sieving mechanism's screening precision according to actual processing demand to make sieving mechanism can be better satisfy user diversified processing demand, promote user's use experience to sieving mechanism.

Inventors

  • GAO YIMING

Assignees

  • 莱芜金山矿产资源有限公司

Dates

Publication Date
20260505
Application Date
20260402

Claims (10)

  1. 1. The fine screening device for the fine iron powder comprises a blanking pipe and is characterized in that a screening mechanism is arranged at the bottom of the blanking pipe, a supporting mechanism used for supporting and vibrating the screening mechanism is arranged below the blanking pipe, the screening mechanism is arranged at the top of the supporting mechanism, the screening mechanism comprises a second screening component used for screening materials and a first screening component used for matching with the second screening component and screening the materials, and the second screening component is arranged inside the first screening component.
  2. 2. The fine iron fine screening device of claim 1, wherein the first screening assembly comprises a limiting storage pipe, an annular blocking plate for supporting and fixing the blanking pipe is fixedly connected to the upper surface of the limiting storage pipe, a plurality of first electromagnetic screening pieces for screening materials are annularly arranged in the limiting storage pipe, a plurality of first limiting protection pipes for supporting and protecting the first electromagnetic screening pieces are annularly arranged on the inner wall of the limiting storage pipe, the first limiting protection pipes are fixedly connected with the limiting storage pipe, and the first limiting protection pipes are fixedly connected with the first electromagnetic screening pieces.
  3. 3. The fine iron fine screening device according to claim 2, wherein the second screening assembly comprises a screening pipe, a plurality of discharging through holes for playing a slag discharging role are formed in an annular array at the bottom of the screening pipe, a plurality of groups of annular array-arranged screening through holes are vertically arranged at intervals at the top of the screening pipe, a plurality of filter screen plates for being matched with the screening through holes to play a screening role on materials are arranged on the side face of the screening pipe, the screening pore diameter of the filter screen plates arranged on the side face of the screening pipe is gradually increased from top to bottom, and a driving unit is arranged below the screening pipe.
  4. 4. The fine iron fine screening device according to claim 3, wherein the driving unit comprises a first limiting disc, a second limiting disc used for sealing the bottom opening end of the screening tube is arranged above the first limiting disc, the second limiting disc is fixedly connected with the screening tube, a driver used for driving the second limiting disc to rotate is fixedly connected to the middle of the upper surface of the first limiting disc, an adjustable blocking plug in sliding connection with the screening tube is arranged above the second limiting disc, and a height adjusting piece used for adjusting the height of the adjustable blocking plug is arranged on the upper surface of the second limiting disc.
  5. 5. The fine iron fine screening device of claim 4, wherein the upper surface of the first limiting disc is fixedly connected with a second limiting protection tube which is used for limiting the screening tube, the second limiting protection tube is rotationally connected with the screening tube, the top of the height adjusting piece is fixedly connected with the adjustable plugging plug, and the bottom of the height adjusting piece is fixedly connected with the second limiting disc.
  6. 6. The fine iron fine screening device according to claim 5, wherein the supporting mechanism comprises a limiting supporting plate, two ends of the lower surface of the limiting supporting plate are fixedly connected with a plurality of limiting side plates, a blanking through hole is formed in the middle of the upper surface of the limiting supporting plate, a third limiting plate used for supporting and fixing the first limiting disc is arranged in the blanking through hole, a plurality of second limiting plates used for supporting and fixing the third limiting plate are fixedly connected in the blanking through hole, a plurality of second electromagnetic screening pieces used for screening materials are arranged at intervals at two ends of the third limiting plate, one end of each second electromagnetic screening piece is fixedly connected with the corresponding third limiting plate, and the other end of each second electromagnetic screening piece is fixedly connected with the corresponding limiting supporting plate.
  7. 7. The fine iron fine screening device of claim 6, wherein a limiting supporting bottom plate is arranged below the limiting supporting plate, a first limiting plate used for supporting the limiting supporting plate by being matched with a limiting side plate is arranged above the limiting supporting bottom plate at intervals, the first limiting plate is fixedly connected with the limiting side plate, a plurality of limiting guide rods which are in sliding connection with the first limiting plate are fixedly connected to the two ends of the upper surface of the limiting supporting bottom plate, the limiting guide rods penetrate through the first limiting plate, a plurality of elastic vibration starting pieces used for elastically supporting the first limiting plate are further arranged at the two ends of the upper surface of the limiting supporting bottom plate, the top of each elastic vibration starting piece is fixedly connected with the first limiting plate, and the bottom of each elastic vibration starting piece is fixedly connected with the limiting supporting bottom plate.
  8. 8. The fine screening device for fine iron powder according to claim 7, wherein a plurality of first driving plates are fixedly connected to two ends of the upper surface of the limiting support base plate, a second driving plate used for being matched with the first driving plates to drive the limiting support plate to move in a direction away from the limiting support base plate is fixedly connected to the lower surface of the first limiting plate, and a plurality of elastic buffer plates used for playing a role in anti-collision buffering are fixedly connected to the upper surface of the first driving plate.
  9. 9. The fine iron fine screening device of claim 8, wherein two ends of the upper surface of the limiting support bottom plate are provided with elastic protection plates which are matched with the first limiting plates to protect the first driving plates, the tops of the elastic protection plates are fixedly connected with the first limiting plates, the bottoms of the elastic protection plates are fixedly connected with the limiting support bottom plate, inclined material guide plates which are used for guiding materials are symmetrically arranged below the third limiting plates, the inclined material guide plates are obliquely arranged, and the bottoms of the inclined material guide plates are fixedly connected with the limiting support bottom plate.
  10. 10. A screening method of the fine iron fine screening device according to any one of claims 1 to 9, characterized in that the method comprises the following steps: S1, controlling the height adjusting piece to extend or shrink according to screening requirements before use, and adjusting the height of the adjustable plugging plug through the length change of the height adjusting piece so as to adjust the screening precision of the screening device through the position change of the adjustable plugging plug; S2, when the material discharging device is used, the power supply of the first electromagnetic screening piece and the power supply of the second electromagnetic screening piece are connected, then the material discharging through hole is driven to rotate through the driver, meanwhile, the first driving plate and the second driving plate are controlled to be mutually exclusive, the screening mechanism is made to vertically reciprocate through the intermittent mutual exclusion of the first driving plate and the second driving plate, and then materials to be processed are thrown into the discharging pipe; S3, the materials fall into the screening pipe under the action of gravity, at the moment, the materials in the screening pipe pass through the filter screen plate to be discharged under the action of the centrifugal force, sundries with larger diameters are retained in the screening pipe, at the moment, the materials are magnetically attracted and fixed through the first electromagnetic screening piece, and impurities which cannot be adsorbed by the first electromagnetic screening piece continue to fall; S4, carrying out secondary magnetic attraction fixation on the residual materials through a second electromagnetic screening piece along with the further falling of the materials, realizing full screening of the materials through double magnetic attraction screening, discharging impurities after being guided by an inclined guide plate, and then disconnecting the power supplies of the first electromagnetic screening piece and the second electromagnetic screening piece, wherein the target materials are discharged after being guided by the inclined guide plate; S5, after the target material falls down, controlling the height adjusting piece to shrink so that the adjustable blocking plug moves downwards to the lower part of the discharge through hole, enabling the upper surface of the adjustable blocking plug to be flush with the bottom of the discharge through hole, enabling sundries with larger diameters retained in the screening pipe to pass through the discharge through hole to be discharged under the action of centrifugal force, and then enabling the fallen sundries to be discharged after being guided by the inclined guide plate.

Description

Fine screening device and method for fine iron powder Technical Field The invention belongs to the technical field of fine iron powder screening, and particularly relates to a fine iron powder screening device and a fine iron powder screening method. Background The iron concentrate is mineral powder prepared by crushing, grinding, ore dressing and the like of iron ore, is a main raw material of pellets, and the iron content of the iron concentrate directly influences the quality of the pellets, and is mainly distributed in Australia, brazil, india and the like, and a corresponding screening device is used when fine screening is carried out on the iron concentrate; the traditional screening device comprises a screening box, a vibrating motor, a discharge hole, a screen, a fixed plate, a base, a damping spring, a bracket, a rotating rod, a rotating block, a limiting hole, a cover plate, a feeding hopper, a distributing plate, a driving motor, a discharging groove, a material guiding plate, a rotating shaft and other structures, and has the advantages that materials can be uniformly dispersed in a main body mechanism; However, due to the lack of an adjusting structure, the traditional screening device cannot be adjusted according to the actual processing requirement by a user, so that the screening device has a single function, and cannot meet the diversified use requirements of the user, and improvement is urgently needed. Disclosure of Invention The invention aims to provide a fine screening device and a fine screening method for fine iron powder, which are used for solving the problems in the background technology. In order to achieve the purpose, the fine iron fine screening device comprises a blanking pipe, wherein a screening mechanism is arranged at the bottom of the blanking pipe, a supporting mechanism used for supporting and vibrating the screening mechanism is arranged below the blanking pipe, the screening mechanism is arranged at the top of the supporting mechanism, the screening mechanism comprises a second screening component used for screening materials and a first screening component used for matching with the second screening component to screen the materials, and the second screening component is arranged in the first screening component. According to a further scheme, the first screening assembly comprises a limiting storage pipe, an annular blocking plate used for supporting and fixing the blanking pipe is fixedly connected to the upper surface of the limiting storage pipe, a plurality of first electromagnetic screening pieces used for screening materials are annularly arranged in the limiting storage pipe in an array mode, a plurality of first limiting protection pipes used for supporting and protecting the first electromagnetic screening pieces are annularly arranged on the inner wall of the limiting storage pipe in an array mode, the first limiting protection pipes are fixedly connected with the limiting storage pipe, and the first limiting protection pipes are fixedly connected with the first electromagnetic screening pieces. As a still further scheme of the invention, the second screening component comprises a screening pipe, a plurality of discharging through holes for playing a role in deslagging are formed in an annular array at the bottom of the screening pipe, a plurality of groups of annular array-arranged screening through holes are vertically arranged at intervals at the top of the screening pipe, a plurality of filter screen plates for being matched with the screening through holes to play a role in screening materials are arranged on the side face of the screening pipe, the filter screen plates arranged on the side face of the screening pipe are gradually increased in screening pore diameter from top to bottom, and a driving unit is arranged below the screening pipe. As a still further scheme of the invention, the driving unit comprises a first limit disc, a second limit disc used for sealing the bottom opening end of the screening pipe is arranged above the first limit disc, the second limit disc is fixedly connected with the screening pipe, a driver used for driving the second limit disc to rotate is fixedly connected in the middle of the upper surface of the first limit disc, an adjustable sealing plug in sliding connection with the screening pipe is arranged above the second limit disc, and a height adjusting piece used for adjusting the height of the adjustable sealing plug is arranged on the upper surface of the second limit disc. As a still further proposal of the invention, the upper surface of the first limit disk is fixedly connected with a second limit protection pipe which is used for limiting the screening pipe, the second limit protection pipe is rotationally connected with the screening pipe, the top of the height adjusting piece is fixedly connected with the adjustable plugging plug, and the bottom of the height adjusting piece is fixedly connected with the s