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CN-122007014-A - Drop shaft lattice screen structure that blocks up is prevented to entry slope formula

CN122007014ACN 122007014 ACN122007014 ACN 122007014ACN-122007014-A

Abstract

The invention provides an inlet inclined anti-blocking drop shaft grid screen structure which comprises a plurality of main grid bars and a plurality of connecting grid bars which are transversely connected with the main grid bars. The elevation of the top surface of the main grid bar is higher than that of the top surface of the connecting grid bar, so that the surface of the grid screen forms a one-way diversion screen channel only projected by the main grid bar. The main grid bars are sequentially divided into an inclined section and a horizontal section along the ore unloading direction, and the lower end of the inclined section is in smooth transition connection with the horizontal section. The main grid bars are divided into fixed grid bars and movable grid bars which are arranged at intervals, and each movable grid bar is respectively positioned between every two adjacent fixed grid bars. The device also comprises an adjusting component, wherein the adjusting component is triggered by the mode that ore rolls off to strike the screening surface of the grid screen and is used for driving the movable grid bars to move relatively between two adjacent fixed grid bars along the length direction of the connecting grid bars, so that the device is suitable for adjusting the open pore clear distance between the adjacent main grid bars. The gravity flow guiding, dynamic disturbance and reaming design effectively solve the problems of blockage, difficult cleaning and difficult maintenance of the drop shaft grid screen Yi Ka.

Inventors

  • CHEN ZINAN
  • XU WENQIANG
  • ZHANG HOUYUAN
  • Tu Youle
  • ZHOU JIE

Assignees

  • 安徽铜冠（庐江）矿业有限公司

Dates

Publication Date
20260512
Application Date
20260311

Claims (10)

  1. 1. The drop shaft grid screen structure with the inclined inlet and the anti-blocking function is characterized by comprising a plurality of main grids and a plurality of connecting grids (5) which are transversely connected with the main grids, wherein the top surface elevation of the main grids is higher than that of the connecting grids (5), so that a one-way diversion screen channel which is only protruded by the main grids is formed on the surface of the grid screen, the main grids are sequentially divided into an inclined section (1) and a horizontal section (2) along the ore unloading direction, the lower end of the inclined section (1) is in smooth transition connection with the horizontal section (2), the main grids are divided into fixed grids (3) and movable grids (4) which are arranged at intervals, each movable grid (4) is respectively positioned between every two adjacent fixed grids (3), and the drop shaft grid screen structure further comprises an adjusting component which is used for driving the movable grids (4) to relatively move along the length direction of the connecting grids (5) in a mode that ore rolls down to impact the grid screen surface, and the adjusting the net distance between the adjacent fixed grids is suitable for adjusting the adjacent main grids.
  2. 2. The inlet inclined anti-blocking drop shaft grid screen structure according to claim 1, wherein the distance adjusting assembly comprises a sliding block (11) arranged on the top side of the connecting grid (5), a sliding groove (13) matched with the sliding block (11) is formed in the bottom of the movable grid (4), the extending direction of a groove body of the sliding groove (13) is parallel to the length direction of the connecting grid (5), a sliding rod (14) is arranged in the sliding groove (13), the sliding block (11) is sleeved on the outer side of the sliding rod (14) in a sliding manner, first springs are sleeved on the outer sides of two ends of the sliding rod (14), and two ends of each first spring are respectively connected with the corresponding outer wall of the sliding block (11) and the corresponding groove wall of the sliding groove (13).
  3. 3. The inlet inclined anti-blocking drop shaft grid structure according to claim 2, wherein a butt joint groove (28) is formed in the bottom side of the sliding block (11), a butt joint block (27) in plug-in fit with the butt joint groove (28) is arranged on the top side of the connecting grid (5), a second inserting rod (9) perpendicular to the top side of the connecting grid (5) is arranged on the bottom side of the butt joint block (27), a second inserting hole (10) for the second inserting rod (9) to penetrate is formed in the connecting grid (5), a second nut (12) in extrusion fit with the bottom side of the connecting grid (5) is sleeved at the bottom end of the second inserting rod (9) in a threaded manner, and the drop shaft grid structure further comprises a self-locking assembly for automatically locking the relative position of the butt joint block (27) in the butt joint groove (28) and an unlocking assembly for unlocking the self-locking assembly butt joint block (27) in the butt joint groove (28).
  4. 4. A drop shaft grid screen structure with inclined inlet and blocking prevention as claimed in claim 3, wherein the self-locking assembly comprises clamping beads (24) elastically arranged on the side wall of the butt joint groove (28), and clamping holes (25) matched with the clamping beads (24) are formed on the outer side wall of the butt joint block (27).
  5. 5. The inlet inclined anti-blocking drop shaft grid screen structure according to claim 4, wherein a containing groove (26) for containing the clamping beads (24) is formed in the side wall of the butt joint groove (28), and a second spring is arranged between one end, away from the clamping holes (25), of the clamping beads (24) and the corresponding groove wall of the containing groove (26).
  6. 6. The inlet inclined anti-blocking drop shaft grid structure according to claim 4, wherein the unlocking component comprises an operating rod (15) concentrically inserted inside a second inserting rod (9), the bottom end of the operating rod (15) penetrates to the outside of the bottom side of the second inserting rod (9), a transmission rod (18) is inserted at the top end of the operating rod (15), a spiral groove (16) is axially formed in the inner side of the operating rod (15), a lug (17) in sliding fit with the groove (16) is arranged on the outer wall of the transmission rod (18), the top end of the operating rod (15) stretches into the inner side of a butt joint block (27) and is fixedly connected with a bevel block (19), the top side of the bevel block (19) is connected with the corresponding side wall of the butt joint block (27) through a telescopic rod (20), a vertical plate (21) is fixedly arranged in the butt joint block (27), a push rod (22) parallel to the connecting grid (5) is slidably inserted on the vertical plate (21), one end of the push rod (22) is in extrusion fit with the bevel block (19), the other end of the push rod (23) is connected with a top plate (23), the top plate (23) can stretch into a corresponding side wall of the butt joint block (25) in a clamping hole (25), and the corresponding side wall of the top plate (23) is respectively provided with a third side wall of the third side wall.
  7. 7. A drop shaft grid screen structure with an inclined inlet and blocking prevention as claimed in claim 1, wherein a first inserting rod (6) perpendicular to the top side of the connecting grid (5) is arranged at the bottom of the fixed grid (3), a first inserting hole (7) for the first inserting rod (6) to penetrate is formed in the connecting grid (5), and a first nut (8) in extrusion fit with the bottom side of the connecting grid (5) is sleeved at the bottom end of the first inserting rod (6) in a threaded manner.
  8. 8. An inlet inclined anti-blocking drop shaft grid screen structure as claimed in claim 1, wherein the cross section of the main grid bars is of an inverted trapezoid structure or a T-shaped structure, so that unidirectional diversion screen channels formed between adjacent main grid bars are reamed in a shape of small upper part and large lower part on a vertical cross section.
  9. 9. An inlet inclined anti-clogging drop well screen structure as claimed in claim 1, wherein a standard open cell clear distance d between adjacent two of said main bars is defined, the actual open cell clear distance of adjacent main bars being varied randomly or alternately within d±a, where a is 5% -15% of the standard open cell clear distance d.
  10. 10. An inlet inclined anti-blocking drop shaft grid screen structure as claimed in claim 1, wherein the high end of the inclined section (1) is arranged at a car arrester, one end of the horizontal section (2) away from the inclined section (1) is arranged at a drop shaft ring foundation, and an elastic buffer cushion is arranged between the grid screen and the drop shaft ring foundation.

Description

Drop shaft lattice screen structure that blocks up is prevented to entry slope formula Technical Field The invention relates to the technical field of mine material screening, in particular to an inlet inclined anti-blocking drop shaft grid screen structure. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. In the wellhead of a mine drop shaft, a grid screen is a key facility for controlling the lump size of the down-put ore and preventing the drop shaft from being blocked by oversized lumps. In the related art, a common grid is mostly welded into a uniform grid structure by horizontally arranged square steel or I-steel. However, such conventional structures are often horizontally arranged as a whole and the pitch between the bars is equal, so that a stable arch bridge is easily formed on the screen surface by the large-sized ore in a regular shape, which leads to blockage, and the side walls of the conventional square steel sections are vertical, the top surfaces of the vertical and horizontal bars are usually flush, the ore is extremely easy to clamp at the cross-point, the friction force is large, the cleaning is extremely difficult, in addition, the conventional grid is of a rigid welded structure, and the pitch of the bars is fixed. When the ore is blocked, the ore can be forcedly broken by manpower or machinery, and the ore can not be actively discharged through deformation or movement of the ore. In order to solve the problems, the invention provides an inlet-inclined anti-blocking drop shaft grid screen structure. Disclosure of Invention The invention mainly aims to provide an inlet inclined anti-blocking drop shaft grid screen structure which has anti-blocking and self-cleaning functions and is convenient for modularized maintenance. The technical scheme includes that the drop shaft grid structure with the inclined inlet capable of preventing blockage is achieved by the fact that the drop shaft grid structure is arranged at a drop shaft wellhead in a covering mode and comprises a plurality of main grids and a plurality of connecting grids transversely connected with the main grids, the elevation of the top surface of the main grids is higher than that of the top surface of the connecting grids, the surface of a grid is enabled to form a one-way diversion screen channel protruding only by the main grids, the main grids are sequentially divided into inclined sections and horizontal sections along the ore unloading direction, the lower ends of the inclined sections are in smooth transition connection with the horizontal sections, the main grids are divided into fixed grids and movable grids which are arranged at intervals, each movable grid is located between every two adjacent fixed grids, and the adjusting assembly is triggered and used for driving the movable grids to relatively move between the two adjacent fixed grids along the length direction of the connecting grids in a mode that ore rolls down to impact the grid surface of the grid, so that the net distance between the adjacent main grids is adjusted. Further, the distance adjusting assembly comprises a sliding block arranged on the top side of the connecting grid, a sliding groove matched with the sliding block is formed in the bottom of the movable grid, the extending direction of a groove body of the sliding groove is parallel to the length direction of the connecting grid, a sliding rod is arranged in the sliding groove, the sliding block is sleeved on the outer side of the sliding rod in a sliding manner, first springs are sleeved on the outer sides of two ends of the sliding rod respectively, and two ends of each first spring are respectively connected with the corresponding outer wall of the sliding block and the corresponding groove wall of the sliding groove. Furthermore, the slider bottom side has offered the butt joint groove, and the connection grid top side is provided with the butt joint piece with butt joint groove grafting complex, and the butt joint piece bottom side is provided with the second inserted bar of perpendicular to connection grid top side, has offered the second jack that supplies the second inserted bar to run through on the connection grid, and second inserted bar bottom screw thread cup joints the second nut with connection grid bottom side extrusion complex, still includes the locking component that is used for automatic locking butt joint piece in the butt joint groove relative position and is used for releasing the locking state of locking component butt joint piece in the butt joint groove. Still further, the auto-lock subassembly includes the card pearl that elasticity set up on the butt joint groove lateral wall, offered on the butt joint piece lateral wall with card pearl complex card hole. Furthermore, a containing groove for containing the clamping beads is formed in the side wall of the butt joint gro