CN-224221470-U - Sand mill rod pin and mounting structure thereof

CN224221470UCN 224221470 UCN224221470 UCN 224221470UCN-224221470-U

Abstract

The utility model relates to the field of grinding equipment and discloses a rod pin of a sand mill and an installation structure thereof, wherein the rod pin comprises a ceramic outer sleeve and a metal core rod arranged in the ceramic outer sleeve; the ceramic outer sleeve is of a tubular structure with one sealed end, a metal liner tube is lined in an inner cavity of the ceramic outer sleeve, 2 symmetrically arranged convex columns are arranged on the inner wall of the metal liner tube close to the opening end of the ceramic outer sleeve, a stud for installation is arranged at one end of the metal core rod, a spring is fixedly arranged at the other end of the metal core rod, and 2J-shaped clamping grooves matched with the convex columns in a central symmetry mode are formed in the outer wall of the metal core rod along the length direction of the metal core rod. According to the ceramic outer sleeve disclosed by the utility model, the locking structure is formed by the convex columns and the J-shaped clamping grooves, and the elastic force is provided by the springs to realize the anti-loosening of the ceramic outer sleeve, so that the ceramic outer sleeve is convenient to assemble and disassemble, the fastener is not required to be assembled and disassembled, and the replacement efficiency of the ceramic outer sleeve is improved.

Inventors

ZHOU WENJIE
ZHOU AIFANG
LI XIAOHE

Assignees

湖南奥诚电子科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250529

Claims (8)

1. The rod pin of the sand mill comprises a ceramic outer sleeve and a metal core rod arranged in the ceramic outer sleeve, and is characterized in that: The ceramic outer sleeve is of a tubular structure with one sealed end, a metal liner tube is lined in the inner cavity of the ceramic outer sleeve, and 2 symmetrically arranged convex columns are arranged on the inner wall of the metal liner tube close to the opening end of the ceramic outer sleeve; One end of the metal core rod is provided with a stud for installation, the other end of the metal core rod is fixedly provided with a spring, and the outer wall of the metal core rod is provided with 2J-shaped clamping grooves which are symmetrical in center and matched with the convex columns along the length direction of the metal core rod.
2. The rod pin of the sand mill of claim 1, wherein the clamping groove comprises a guide vertical groove, a horizontal transverse groove and a limiting hook groove, two ends of the horizontal transverse groove are respectively communicated with the guide vertical groove and the limiting hook groove, and the limiting hook groove and the guide vertical groove are arranged on the same side of the horizontal transverse groove.
3. The sander stick pin of claim 1, wherein the length of the metal core pin shaft is less than the depth of the inner bore of the ceramic outer sleeve.
4. The sander rod pin of claim 1, wherein the end of the metal core rod remote from the stud has a blind hole, and the spring is fixedly mounted in the blind hole.
5. The sand mill rod pin according to claim 1, wherein 2 wrench grooves are further formed in the metal core rod, and the 2 wrench grooves are perpendicular to the 2 clamping grooves.
6. A mounting structure of a rod pin of a sand mill comprises a rotor and the rod pin mounted on the rotor, and is characterized in that the rod pin adopts any one of the rod pins according to claims 2 to 5, and a stud of a metal core rod of the rod pin is mounted in a screw hole of the rotor.
7. The mounting structure of a rod pin of a sand mill according to claim 6, wherein an annular groove communicated with the screw hole is further formed outside the screw hole of the rotor, the inner diameter of the annular groove is equal to the outer diameter of the ceramic outer sleeve, and the depth of the annular groove is larger than the length of the limit hook groove.
8. The sand mill rod pin mounting structure according to claim 7, wherein a sealing groove is formed in a region, located in the annular groove, of the outer wall of the ceramic outer sleeve, and a sealing ring is mounted in the sealing groove.

Description

Sand mill rod pin and mounting structure thereof Technical Field The utility model relates to the field of grinding equipment, in particular to a rod pin of a sand mill and an installation structure of the rod pin. Background The sand mill belongs to wet superfine grinding equipment, is developed from a ball mill, and is widely applied to pigment dispersion and grinding in the ink production process. The sand mill can be divided into disc type, rod pin type, rod disc type (namely convex block type) and the like according to the structural shape of the stirring shaft, wherein the rod pin type sand mill is superfine dispersion and nanoscale grinding equipment suitable for water-based and solvent-based materials, and the structure and the mounting mode of the rod pin have a vital effect on the use effect of the sand mill. The existing rod pin consisting of the ceramic outer sleeve and the metal core rod can only replace and wear or destroy the ceramic outer sleeve, so that the replacement cost can be reduced, but the fastener needs to be disassembled and assembled during replacement, so that the problem of troublesome operation exists. For example, the application number CN202221348419.2 discloses a rod pin of a sand mill and a sand mill, a ceramic sheath of the sand mill is fixed on a metal rod pin through a fastener, and the fastener needs to be disassembled and assembled when the ceramic sheath is replaced. Based on the application, the application provides the sand mill rod pin which is reliable in installation and can realize quick replacement of the ceramic outer sleeve without disassembling and assembling a fastener, and the installation structure thereof, so as to solve the problems. Disclosure of utility model The utility model aims to solve the technical problems existing in the prior art. Therefore, the utility model provides the sand mill rod pin and the installation structure thereof, which are reliable in installation and can realize quick replacement of the ceramic outer sleeve without disassembling and assembling a fastener. The technical scheme adopted for solving the technical problems is as follows: The first aspect provides a sand mill rod pin, which comprises a ceramic outer sleeve and a metal core rod arranged in the ceramic outer sleeve, wherein the ceramic outer sleeve is of a tubular structure with one end sealed, a metal liner tube is lined in an inner cavity of the ceramic outer sleeve, 2 symmetrically arranged convex columns are arranged at the inner wall of the metal liner tube close to the opening end of the ceramic outer sleeve, a stud for installation is arranged at one end of the metal core rod, a spring is fixedly arranged at the other end of the metal core rod, and 2J-shaped clamping grooves matched with the convex columns in a central symmetry mode are formed in the outer wall of the metal core rod along the length direction of the metal core rod. In some optional embodiments, the clamping groove comprises a guide vertical groove, a horizontal transverse groove and a limiting hook groove, wherein two ends of the horizontal transverse groove are respectively communicated with the guide vertical groove and the limiting hook groove, and the limiting hook groove and the guide vertical groove are arranged on the same side of the horizontal transverse groove. In some alternative embodiments, the length of the metal core rod stem is less than the depth of the inner bore of the ceramic outer jacket. In some alternative embodiments, a blind hole is formed in the end, away from the stud, of the metal core rod, and the spring is fixedly mounted in the blind hole. In some optional embodiments, the metal core bar is further provided with 2 wrench grooves, and the 2 wrench grooves are perpendicular to the 2 clamping grooves. In a second aspect, a mounting structure of a rod pin of a sand mill is provided, including a rotor and a rod pin mounted on the rotor, where the rod pin is a rod pin as described in the foregoing embodiment, and a stud of a metal core rod of the rod pin is mounted in a screw hole of the rotor. In some alternative embodiments, an annular groove communicated with the screw hole is further arranged outside the screw hole of the rotor, the inner diameter of the annular groove is equal to the outer diameter of the ceramic outer sleeve, and the depth of the annular groove is larger than the length of the limit hook groove. In some alternative embodiments, a sealing groove is arranged in the area of the outer wall of the ceramic outer sleeve, which is positioned in the annular groove, and a sealing ring is arranged in the sealing groove. Compared with the prior art, the utility model has the beneficial effects that: According to the ceramic outer sleeve disclosed by the utility model, the locking structure is formed by the convex columns and the J-shaped clamping grooves, and the elastic force is provided by the springs to realize the anti-loosening of the ceramic outer sle