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CN-116273496-B - Centrifuge screw assembly and centrifuge thereof

CN116273496BCN 116273496 BCN116273496 BCN 116273496BCN-116273496-B

Abstract

The invention belongs to the field of horizontal spiral centrifuges, and in particular relates to a centrifuge spiral assembly and a centrifuge thereof, which comprise a spiral core tube, spiral blades and BD plates, wherein the spiral blades and the BD plates are spirally arranged on the outer wall of the spiral core tube, the front end of the spiral core tube is provided with a conical tube, the BD plates are arranged on the outer wall of the conical tube, and the radial width of the BD plates is gradually reduced from a first end to a second end, so that the distance between the outer wall of the BD plates and the inner wall of a rotary drum is gradually increased from the first end to the second end. The BD plate has the beneficial effects that due to the adoption of the structure, the distance between the outer wall of the BD plate and the inner wall of the rotary drum gradually increases from the first end to the second end, so that solid particles at the first end are more dense, the water content of a solid phase is further reduced, and meanwhile, the concentration of the solid particles at the second end is also reduced, thereby avoiding excessive abrasion of the second end.

Inventors

  • LIU JIANZONG
  • JI DAPENG
  • SHAN WEIWEI
  • LI ZHIWEN
  • PAN JIULIANG
  • ZHOU LINGFENG

Assignees

  • 绿水股份有限公司

Dates

Publication Date
20260505
Application Date
20230303

Claims (7)

  1. 1. The utility model provides a centrifuge spiral subassembly, includes spiral core pipe (2), spiral blade (3) and BD board (1) of being the heliciform and arranging on spiral core pipe (2) outer wall, the front end of spiral core pipe (2) has conical tube (4), BD board (1) set up on conical tube (4) outer wall, a serial communication port, the BD board is C shape structure, BD board (1) radially width diminishes gradually from its first end (100) to second end (101) for BD board outer wall (103) and rotary drum inner wall's interval increases gradually from first end (100) to second end (101); the BD plate (1) is provided with a first blocking end head (104) at a first end (100), the BD plate (1) is provided with a second blocking end head (105) at a second end (101), and the first blocking end head (104) and the second blocking end head (105) are respectively connected with the side surfaces of the spiral blades (3); The outer diameter of the rear end of the conical tube (4) is larger than that of the spiral core tube main body, so that the rear end of the conical tube (4) protrudes out of the outer wall of the spiral core tube main body to form a boss structure (400), and the BD plate (1) is arranged on the outer wall of the boss structure (400).
  2. 2. A centrifuge screw assembly according to claim 1, characterized in that the BD plate inner wall (102) of the BD plate (1) is an arc surface with a uniform curvature.
  3. 3. A centrifuge screw assembly according to claim 1, characterized in that the BD plate (1) exhibits an equidistant spiral in a radial cross-section of its BD plate outer wall (103).
  4. 4. The centrifuge screw assembly of claim 1 wherein the first occlusion tip (104) projects from the front side of the BD plate body.
  5. 5. A centrifuge screw assembly according to claim 1, wherein the second stopper tip (105) is provided protruding from the rear side of the BD plate body.
  6. 6. The centrifuge screw assembly of claim 1 wherein the outer wall of the boss structure (400) has a uniform outer diameter.
  7. 7. A centrifuge comprising a centrifuge screw assembly according to any one of claims 1 to 6.

Description

Centrifuge screw assembly and centrifuge thereof Technical Field The invention belongs to the field of horizontal spiral centrifuges, and particularly relates to a spiral assembly of a centrifuge and the centrifuge thereof. Background The spiral component of the horizontal spiral centrifuge generally comprises a spiral core tube, a BD plate, a spiral blade and other structures, the main body of the spiral core tube is of a tubular structure with uniform and consistent outer diameter, the front end of the spiral core tube, namely one end of a solid phase outlet, is provided with a conical tube, the outer diameter of the rear end of the conical tube is consistent with the outer diameter of the main body of the spiral core tube, the BD plate is welded on the outer wall of the conical tube, and a cavity between the outer wall of the spiral core tube and the inner wall of a rotary drum is divided into a drying area and a sedimentation area, and the patent CN201565362U can be referred to specifically. The problem of the prior art is that the BD plate is generally perpendicular to the axis of the spiral core tube, and the spiral blades are spirally arranged along the outer wall of the spiral core tube, so that the distance between the BD plate and the nearest spiral blade on one side of the sedimentation zone is uneven, and the distance between the BD plate and the spiral blade is gradually increased from one end to the other end, wherein the larger distance between the BD plate and the spiral blade is defined as a first end, the other end is defined as a second end, and in the case that the distance between the outer wall of the BD plate and the inner wall of the rotating drum is uniform, the larger distance between the BD plate and the spiral blade is, the loose solid particles are easy to pass through the BD plate, the solid phase water content is increased, and the abrasion to the BD plate is larger when the solid particles are relatively dense at the place where the distance between the BD plate and the spiral blade is smaller. In addition, in order to ensure that dense solid particles can continuously pass between the outer wall of the BD plate and the inner wall of the drum (so that moisture cannot easily pass), the applicant wishes to thicken the BD plate in the axial direction, but the thickening of the BD plate affects the unbalance amount of the conical tube, resulting in a reduction in the service life of the conical tube. Disclosure of Invention In order to make up for the defects of the prior art, the invention provides a centrifuge spiral component and a centrifuge technical scheme thereof. The utility model provides a centrifuge spiral subassembly, includes spiral core pipe, is helical blade and BD board of heliciform on spiral core pipe outer wall, spiral core pipe's front end has the circular cone pipe, the BD board sets up on circular cone pipe outer wall, the BD board diminishes gradually from its first end to the second end in radial width for BD board outer wall and rotary drum inner wall's interval from first end to the second end grow gradually. Further, the inner wall of the BD plate is an arc surface with uniform curvature. Further, the BD plate has an outer wall exhibiting an equidistant spiral in a radial cross section. Further, the first end of BD board sets up first shutoff end, the second end of BD board sets up the second shutoff end, first shutoff end and second shutoff end link to each other with helical blade's side respectively. Further, the first plugging end is arranged in a protruding mode from the front side of the BD plate main body. Further, the second blocking end is arranged in a protruding mode from the rear side of the BD plate main body. Further, the outer diameter of the rear end of the conical tube is larger than that of the spiral core tube main body, so that the rear end of the conical tube protrudes out of the outer wall of the spiral core tube main body to form a boss structure. Further, the BD plate is arranged on the outer wall of the boss structure. Further, the outer diameter of the outer wall of the boss structure is uniform. The present invention also provides a centrifuge comprising a centrifuge screw assembly as described above. Compared with the prior art, the invention has the beneficial effects that: 1) Because the BD plate adopts the structure, the distance between the outer wall of the BD plate and the inner wall of the rotary drum gradually increases from the first end to the second end, so that solid particles at the first end are more dense, the water content of the solid phase is further reduced, and the concentration of the solid particles at the second end is also reduced, thereby avoiding excessive abrasion of the second end; 2) The boss structure protruding out of the outer wall of the spiral core pipe main body is arranged, the structure of the conical pipe is reinforced in the mode, the influence on the unbalance of the conical pipe after