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CN-122006862-A - Wet milling device for hard alloy mixture

CN122006862ACN 122006862 ACN122006862 ACN 122006862ACN-122006862-A

Abstract

The invention relates to the technical field of wet grinding equipment and discloses a wet grinding device for hard alloy mixtures, which comprises a base, wherein an outer barrel body is arranged at the upper part of the base, an inner grinding barrel for wet grinding the hard alloy mixtures is arranged in the outer barrel body, an annular liquid injection seat for injecting liquid into the hard alloy mixtures in the inner grinding barrel is arranged on one side of the middle part of the outer wall of the outer barrel body, and an inlet and outlet auxiliary mechanism is used for carrying out auxiliary inlet and outlet treatment on the hard alloy mixtures in the inner grinding barrel. Through increasing and setting up multistage grinding mechanism, when carrying out wet milling processing to carbide mixture, this mechanism not only separates the internal grinding section of thick bamboo into coarse grind, correct grinding, homogenization syllogic structure through the current limiting screen cloth baffle, realizes the hierarchical grinding of mixture, and the spiral water conservancy diversion arch of coarse grinding section can increase the collision probability of mixture and major diameter grinding ball, ensures that coarse particle fully breaks, and the medium and small diameter grinding ball of correct grinding section then can accurate refinement granule, avoids excessively grinding.

Inventors

  • CHEN TIANXIAO
  • LUO JIANFEI
  • WU LIZHI
  • Xiao zhaofa
  • ZHOU XILING

Assignees

  • 赣州锐科合金材料有限公司

Dates

Publication Date
20260512
Application Date
20260416

Claims (10)

  1. 1. A wet grinding device for hard alloy mixture is characterized by comprising, The hard alloy grinding device comprises a base (1), wherein an outer barrel body (10) is arranged at the upper part of the base (1), an inner grinding cylinder (18) for carrying out wet grinding on the hard alloy mixture is arranged in the outer barrel body (10), and an annular liquid injection seat (15) for injecting the hard mixture in the inner grinding cylinder (18) is arranged on one side of the middle part of the outer wall of the outer barrel body (10); the feeding and discharging auxiliary mechanism is arranged on the outer barrel body (10) and is used for carrying out auxiliary feeding and discharging treatment on the hard alloy mixture in the inner grinding barrel (18); The multistage grinding mechanism is arranged in the inner grinding cylinder (18) and is used for carrying out multistage grinding treatment on the hard alloy mixture entering the inner grinding cylinder (18); the resonance treatment mechanism is arranged in the inner grinding cylinder (18) and is used for recycling resonance vibration generated in the wet grinding process of the hard alloy mixture; and the circulating homogenization mechanism is arranged on the base (1) and is used for circulating and homogenizing the hard alloy mixture in the wet grinding process.
  2. 2. The wet milling device of the hard alloy mixture according to claim 1, wherein the row entering auxiliary mechanism comprises a feeding end cover (2), the middle part of one end of the outer barrel body (10) is provided with the feeding end cover (2), the middle part of the other end of the outer barrel body (10) is provided with a discharging end cover (16), the top of the outer wall of the outer barrel body (10) is provided with a connecting frame (14), the rear side of the top end of the base (1) is provided with a rotating bracket (9), and the rotating bracket (9) is rotationally connected with the bottom of the rear end of the connecting frame (14).
  3. 3. The wet milling device of the hard alloy mixture according to claim 2, wherein the row entering auxiliary mechanism further comprises a driving part (7), the driving part (7) is arranged on the outer wall of the inner milling drum (18), a driver (13) for driving the inner milling drum (18) and the upper driving part (7) of the inner milling drum is arranged on one side of the middle of the top end of the connecting frame (14), a driving motor (11) is arranged on one side of the middle of the top end of the connecting frame (14), a speed reducer (12) is arranged in the middle of the top end of the connecting frame (14), the power output end of the driving motor (11) is connected with the power input end of the speed reducer (12), the power output end of the speed reducer (12) is connected with the power input end of the driver (13), hydraulic cylinders (5) are arranged on two sides of the base (1), and rod bodies of the hydraulic cylinders (5) are respectively connected with the positions corresponding to the connecting frame (14) in a rotating mode.
  4. 4. Wet milling device for cemented carbide mixture according to claim 1, characterized in that the multi-section milling mechanism comprises a current limiting screen baffle (19), two current limiting screen baffles (19) are arranged in the inner milling drum (18) at equal intervals, the two current limiting screen baffles (19) divide the inner part of the inner milling drum (18) into a rough milling section, a fine milling section and a homogenizing section from a feed inlet to a discharge outlet in sequence, a spiral diversion protrusion (17) is arranged on the inner wall of the rough milling section, and a plurality of large-diameter cemented carbide spheres (20) are arranged in the rough milling section.
  5. 5. The wet grinding device of cemented carbide mixture according to claim 4, wherein the multi-stage grinding mechanism further comprises a guide plate (22), a plurality of guide plates (22) are arranged in the homogenizing stage at equal intervals, a plurality of mesh guide grooves (21) are formed in the upper side surface and the lower side surface of the guide plates (22) in a staggered mode, and a plurality of medium-diameter cemented carbide spheres (26) and small-diameter cemented carbide spheres (27) are arranged in the fine grinding stage.
  6. 6. The wet milling device of the hard alloy mixture according to claim 5, wherein the multi-section milling mechanism further comprises a discontinuous calandria (23), the discontinuous calandria (23) is arranged at the edge of the inner wall of the inner milling cylinder (18) close to the homogenization section, a rotating shaft lever (25) is fixedly connected to the middle part of the inner side of the discontinuous calandria (23), and a turnover plugging seat (24) is rotatably connected to the rotating shaft lever (25).
  7. 7. The wet milling device of the hard alloy mixture according to claim 1, wherein the resonance treatment mechanism comprises an elastic resonance bushing (32), the elastic resonance bushing (32) is sequentially composed of a hard alloy wear-resistant sleeve (31), a spiral vibration conducting rib (30) and an elastic damping sleeve (28) from inside to outside, the hard alloy wear-resistant sleeve (31) is arranged in the inner milling barrel (18), and the inner wall of the hard alloy wear-resistant sleeve (31) is attached to the inner wall of the inner milling barrel (18).
  8. 8. The wet milling device of the hard alloy mixture according to claim 7, wherein a spiral vibration conducting rib (30) is arranged on the outer wall of the hard alloy wear-resistant sleeve (31), a plurality of conducting struts (29) are arranged on the spiral vibration conducting rib (30) at equal intervals, one ends of the conducting struts (29) are respectively connected with corresponding positions of the outer wall of the hard alloy wear-resistant sleeve (31), and an elastic damping sleeve (28) matched with the impact vibration frequency of the alloy sphere and the mixture is arranged on the outer side of the spiral vibration conducting rib (30).
  9. 9. The wet milling device of the hard alloy mixture according to claim 1, wherein the circulating homogenization mechanism comprises a static mixer (4), the middle of the top end of the base (1) is provided with the static mixer (4), the bottom of the static mixer (4) is provided with a supporting frame (6), one side of the top end of the static mixer (4) is provided with a feeding pipe (8), and the top of the feeding pipe (8) is communicated with the inside of the intermittent calandria (23).
  10. 10. Wet milling device for cemented carbide mixtures according to claim 9, characterized in that the circulating homogenization mechanism further comprises a discharge pipe (33), the discharge pipe (33) is arranged on one side of the middle part of the top end of the static mixer (4), and the discharge pipe (33) is communicated with the inside of the feed end cover (2) through a return pipe (3).

Description

Wet milling device for hard alloy mixture Technical Field The invention relates to the technical field of wet milling equipment, in particular to a wet milling device for a hard alloy mixture. Background Wet milling mixing is the most widely applied mixing process in the current hard alloy mixture industrial production, and has the core advantages of synchronously realizing three key targets of uniform powder dispersion, granularity refinement and oxidation control, and precisely matching the strict requirements of the hard alloy mixture on component uniformity, granularity stability and subsequent process suitability. In the wet grinding process, volatile liquid such as alcohol, acetone and the like is generally adopted as a dispersion medium, so that powder particles are uniformly suspended in the liquid, powder agglomerates are effectively broken through by virtue of the impact, grinding and stirring actions of a grinding medium, and the hard phase, the bonding phase and various additives are uniformly distributed on a microscopic scale. Compared with a dry grinding process, the wet grinding can effectively avoid the local enrichment phenomenon of powder due to electrostatic adsorption or mechanical force, radically reduce the defects of component segregation, internal pores, structural cracks and the like of the sintered alloy, and ensure the stability of the performance of the final product. However, the cemented carbide mixture itself has the characteristics of heterogeneous phases, large hardness differences of each phase and high sensitivity of performance to mixing quality, which puts higher demands on the structural design of wet milling equipment. The existing wet grinding machine mostly adopts a single cylindrical grinding cavity structure, and has obvious technical limitations in processing the mixture. On the one hand, the single grinding environment is difficult to meet the processing requirements of particles with different particle sizes, coarse particles are not fully crushed and fine particles are excessively ground, on the other hand, the slurry in the cylindrical cavity is easy to form a local retention area, uniform mixing of the whole cavity cannot be realized, obvious fluctuation exists in components and particle size distribution of discharged slurry, the stability of subsequent forming and sintering processes is directly influenced, and the mass production of high-performance hard alloy products is restricted. Therefore, a wet milling device for cemented carbide mixture is proposed by those skilled in the art to solve the above-mentioned technical problems. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a wet grinding device for a hard alloy mixture, which solves the problems that coarse particles are not fully crushed and fine particles are excessively ground easily caused by a single grinding environment. In order to achieve the aim, the invention is realized by the following technical scheme that the wet grinding device of the hard alloy mixture comprises, The upper part of the base is provided with an outer barrel body, an inner grinding cylinder for wet grinding of the hard alloy mixture is arranged in the outer barrel body, and one side of the middle part of the outer wall of the outer barrel body is provided with an annular liquid injection seat for injecting liquid into the hard mixture in the inner grinding cylinder; the feeding and discharging auxiliary mechanism is arranged on the outer barrel body and is used for carrying out auxiliary feeding and discharging treatment on the hard alloy mixture in the inner grinding barrel; the multi-section grinding mechanism is arranged in the inner grinding cylinder and is used for carrying out multi-section grinding treatment on the hard alloy mixture entering the inner grinding cylinder; The resonance treatment mechanism is arranged in the inner grinding cylinder and is used for recycling resonance vibration generated in the wet grinding process of the hard alloy mixture; and the circulating homogenization mechanism is arranged on the base and is used for circulating and homogenizing the hard alloy mixture in the wet grinding process. Preferably, the feeding auxiliary mechanism comprises a feeding end cover, the middle part of one end of the outer barrel body is provided with the feeding end cover, the middle part of the other end of the outer barrel body is provided with a discharging end cover, the top of the outer wall of the outer barrel body is provided with a connecting frame, the rear side of the top end of the base is provided with a rotating support, and the rotating support is rotationally connected with the bottom of the rear end of the connecting frame. Preferably, the row entering auxiliary mechanism further comprises a driving part, a driving part is arranged on the outer wall of the inner grinding cylinder, a driver for driving the inner grinding cylinder and the upper driving