Grinding roller of rolling mill

Abstract

The utility model discloses a grinding roller of a rolling mill, which comprises at least two grinding roller brackets which are stacked up and down, the middle part of each grinding roller bracket is provided with a mounting through hole, the peripheral surface of each grinding roller bracket is provided with a plurality of layers of grinding roller mounting grooves, each grinding roller bracket is also provided with a grinding roller rotating shaft, the grinding roller rotating shaft is sleeved with a grinding roller, and the grinding roller is in clearance fit with the grinding roller rotating shaft. The number of the grinding roller rotating shafts installed on the upper-layer grinding roller support is smaller than that of the grinding roller rotating shafts installed on the lower-layer grinding roller support, and the outer diameter of the grinding rollers on the upper-layer grinding roller support is larger than that of the grinding rollers on the lower-layer grinding roller support; the number of the grinding rollers on the upper-layer grinding roller bracket is smaller than that of the grinding rollers on the lower-layer grinding roller bracket, so that the number of stored materials to be roughly ground can be effectively increased; and the outer diameter of the grinding rollers on the upper-layer grinding roller bracket is larger than that of the grinding rollers on the lower-layer grinding roller bracket, so that the coarse crushing capacity of the grinding rollers on the upper-layer grinding roller bracket can be effectively increased, and the crushing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a grinding roller of a roller mill. Background Art

[0002] In the prior art, when the roller mill is working, the material falls into the raceway of the grinding ring under the action of centrifugal force, is impacted, rolled and ground by the grinding roller, and becomes powder after continuous processing. The production capacity of the grinding roller for coarse grinding in the prior art is low, and the parameters such as the gap of the grinding roller cannot be adjusted. The gap between the grinding roller and the grinding roller shaft cannot be adjusted according to different grinding requirements, which affects the production efficiency. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a roller mill roller which can effectively improve the coarse powder crushing efficiency and has higher production efficiency.

[0004] The technical scheme of the utility model is: a roller-pressed grinding roller, comprising at least two grinding roller brackets stacked up and down, a mounting through hole being provided in the middle of the grinding roller bracket, the mounting through hole being sleeved on the driving shaft, a multi-layer grinding roller mounting groove surrounding the grinding roller bracket being provided on the outer peripheral surface of the grinding roller bracket, a grinding roller rotating shaft penetrating into each layer of grinding roller mounting grooves from top to bottom being also installed on the grinding roller bracket, a grinding roller being outer-sheathed on the grinding roller rotating shaft, the grinding roller and the grinding roller rotating shaft being clearance-matched, the number of the grinding roller rotating shafts installed on the upper grinding roller bracket being less than the number of the grinding roller rotating shafts installed on the lower grinding roller bracket, and the outer diameter of the grinding roller on the upper grinding roller bracket being greater than the outer diameter of the grinding roller on the lower grinding roller bracket.

[0005] As a preferred technical solution, the grinding roller shafts on the upper layer and the grinding roller shafts on the lower layer are staggered with each other.

[0006] As a preferred technical solution, an upper grinding roller mounting groove and a lower grinding roller mounting groove are provided on the grinding roller bracket, an upper mounting through hole connected to the upper grinding roller mounting groove is provided on the upper portion of the grinding roller bracket, a lower mounting through hole connected to the lower grinding roller mounting groove is provided on the lower portion of the grinding roller bracket, a middle mounting through hole connected to both the upper grinding roller mounting groove and the lower grinding roller mounting groove is provided on the middle portion of the grinding roller bracket, the grinding roller rotating shaft passes through the upper mounting through hole, the middle mounting through hole and the lower mounting through hole, and the grinding roller rotating shaft and the grinding roller bracket are provided with an installation limiting mechanism.

[0007] As a preferred technical solution, the installation limit mechanism includes an upper mounting sleeve sleeved in the upper mounting through hole, a limit ring is provided at the upper end of the upper mounting sleeve, the outer diameter of the limit ring is larger than the inner diameter of the upper mounting through hole, an elastic retaining ring is provided between the lower part of the upper mounting sleeve and the upper wall of the upper grinding roller mounting groove, the installation limit mechanism also includes a middle mounting sleeve, a limit ring is provided at the upper end of the middle mounting sleeve, the outer diameter of the limit ring is larger than the inner diameter of the middle mounting through hole, an elastic retaining ring is provided between the lower part of the middle mounting sleeve and the upper wall of the lower grinding roller mounting groove, the installation limit mechanism also includes a lower mounting sleeve, a limit ring is provided at the upper end of the lower mounting sleeve, the outer diameter of the limit ring is larger than the inner diameter of the lower mounting through hole; a lower limit ring is provided on the inner hole wall of the lower mounting sleeve, and the lower end of the grinding roller rotating shaft abuts against the lower limit ring.

[0008] As a preferred technical solution, a multi-layer adjustment sleeve is sleeved between the grinding roller and the grinding roller shaft, a gap is provided between the adjustment sleeve and the grinding roller shaft, and the outer peripheral surface of the adjustment sleeve is tightly attached to the wall of the center hole of the grinding roller.

[0009] As a preferred technical solution, the grinding roller shaft outer shell is provided with a shaft sleeve located in the grinding roller mounting groove, the shaft sleeve is tightly attached to the outer circumferential surface of the grinding roller shaft, and a grinding roller gap is provided between the grinding roller and the shaft sleeve.

[0010] As a preferred technical solution, a lower limit ring is provided on the inner hole wall of the lower mounting sleeve, and the lower end of the grinding roller shaft abuts against the lower limit ring.

[0011] As a preferred technical solution, the gap between the grinding roller and the grinding roller shaft in the upper grinding roller mounting groove on the same grinding roller bracket is larger than the gap between the grinding roller and the grinding roller shaft in the lower grinding roller mounting groove.

[0012] As a preferred technical solution, the raceway of the grinding ring corresponding to the grinding roller installed in the upper grinding roller installation groove is located outside the raceway of the grinding ring corresponding to the grinding roller installed in the lower grinding roller installation groove.

[0013] Due to the adoption of the above technical solution, a roller-pressed grinding roller comprises at least two roller brackets stacked up and down, a mounting through hole is provided in the middle of the roller bracket, the mounting through hole is sleeved on the driving shaft, a multi-layer roller mounting groove surrounding the roller bracket is provided on the outer peripheral surface of the roller bracket, a roller rotating shaft is also installed on the roller bracket, which penetrates into each layer of roller mounting grooves from top to bottom, a roller is outer-sheathed on the roller rotating shaft, the roller is clearance-matched with the roller and the roller rotating shaft, the number of the roller rotating shafts installed on the upper roller bracket is less than that on the lower roller bracket, and the number of the roller rotating shafts installed on the upper roller bracket is less than that on the lower roller bracket. The number of grinding roller shafts installed on the grinding roller brackets of the upper layer, the outer diameter of the grinding roller on the upper grinding roller bracket is greater than the outer diameter of the grinding roller on the lower grinding roller bracket; the number of grinding rollers on the upper grinding roller bracket is less than the number of grinding rollers on the lower grinding roller bracket, which can effectively increase the amount of materials to be coarsely ground stored; and the outer diameter of the grinding roller on the upper grinding roller bracket is greater than the outer diameter of the grinding roller on the lower grinding roller bracket, which can effectively increase the production capacity of the grinding roller on the upper grinding roller bracket for coarse crushing, thereby improving the crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following is a brief introduction to the drawings required for use in the embodiments or descriptions of the prior art. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of point I in the middle;

[0017] Figure 3 It is a schematic diagram of the installation position of the adjusting sleeve in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the installation position of the rotating shaft sleeve in the embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the positional relationship between the grinding roller and the raceway on the grinding ring in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1 to Figure 2As shown, a roller-pressed grinding roller comprises at least two grinding roller brackets 1 stacked up and down, a mounting through hole 2 is provided in the middle of the grinding roller bracket 1, the mounting through hole 2 is sleeved on the driving shaft 3, a multi-layer grinding roller mounting groove 4 surrounding the grinding roller bracket 1 is provided on the outer peripheral surface of the grinding roller bracket 1, a grinding roller rotating shaft 5 is also installed on the grinding roller bracket 1 and penetrates into each layer of grinding roller mounting grooves 4 from top to bottom, a grinding roller 6 is outer-coated on the grinding roller rotating shaft 5, the grinding roller 6 and the grinding roller rotating shaft 5 are clearance-matched, the number of the grinding roller rotating shafts 5 installed on the upper grinding roller bracket 1 is less than the number of the grinding roller rotating shafts 5 installed on the lower grinding roller bracket 1, and the outer diameter of the grinding roller 6 on the upper grinding roller bracket 1 is greater than the outer diameter of the grinding roller 6 on the lower grinding roller bracket 1. The number of grinding rollers on the upper grinding roller bracket is smaller than that on the lower grinding roller bracket, which can effectively increase the amount of materials to be coarsely ground; and the outer diameter of the grinding roller on the upper grinding roller bracket is larger than that on the lower grinding roller bracket, which can effectively increase the capacity of the grinding roller on the upper grinding roller bracket for coarse grinding, thereby improving the grinding efficiency.

[0021] In order to further improve the crushing efficiency, the grinding roller shaft 5 on the upper layer and the grinding roller shaft 5 on the lower layer are staggered with each other.

[0022] like Figure 1 to Figure 2 As shown, one of the grinding roller brackets 1 is provided with an upper grinding roller mounting groove and a lower grinding roller mounting groove, an upper mounting through hole 7 communicating with the upper grinding roller mounting groove is provided at the upper portion of the grinding roller bracket 1, a lower mounting through hole 8 communicating with the lower grinding roller mounting groove is provided at the lower portion of the grinding roller bracket 1, a middle mounting through hole 9 communicating with both the upper grinding roller mounting groove and the lower grinding roller mounting groove is provided at the middle portion of the grinding roller bracket 1, the grinding roller rotating shaft 5 penetrates the upper mounting through hole 7, the middle mounting through hole 9 and the lower mounting through hole 8, and the grinding roller rotating shaft 5 and the grinding roller bracket 1 are provided with an installation limiting mechanism. A grinding roller is installed in one of the grinding roller mounting grooves on each grinding roller rotating shaft, and the grinding roller is installed on the grinding roller bracket through the installation limiting mechanism, which has a compact and reliable structure.

[0023] like Figure 1 to Figure 2As shown, the installation limiting mechanism includes an upper installation sleeve 10 sleeved in the upper installation through hole 7, a limiting ring 11 is provided at the upper end of the upper installation sleeve 10, the outer diameter of the limiting ring 11 is larger than the inner diameter of the upper installation through hole 7, an elastic retaining ring 12 is provided between the lower part of the upper installation sleeve 10 and the upper wall of the upper grinding roller installation groove, the installation limiting mechanism also includes a middle installation sleeve 13, a limiting ring 11 is provided at the upper end of the middle installation sleeve 13, the outer diameter of the limiting ring 11 is larger than the inner diameter of the middle installation through hole 9, an elastic retaining ring 12 is provided between the lower part of the middle installation sleeve 13 and the upper wall of the lower grinding roller installation groove, and the installation limiting mechanism also includes a lower installation sleeve 14, a limiting ring 11 is provided at the upper end of the lower installation sleeve 14, the outer diameter of the limiting ring 11 is larger than the inner diameter of the lower installation through hole 8. The inner hole wall of the lower installation sleeve 14 is provided with a lower limiting ring 19, and the lower end of the grinding roller shaft is against the lower limiting ring 19. The limiting ring 11 has a limiting effect, limiting the downward movement of the upper mounting sleeve, the lower mounting sleeve and the middle mounting sleeve, and limiting the upward movement of the upper mounting sleeve, the lower mounting sleeve and the middle mounting sleeve through the elastic retaining ring 12. The inner hole wall of the lower mounting sleeve 14 is provided with a lower limiting ring 19, and the lower end of the grinding roller shaft abuts against the lower limiting ring 19, which limits the grinding roller shaft, ensures the reliability of the installation and facilitates the replacement and maintenance of the grinding roller and the grinding roller shaft.

[0024] like Figure 3 As shown, in order to adjust the gap size between the grinding roller shaft and the grinding roller, a multi-layer adjusting sleeve 15 is sleeved between the grinding roller 6 and the grinding roller shaft 5, a gap 16 is provided between the adjusting sleeve 15 and the grinding roller shaft 5, and the outer peripheral surface of the adjusting sleeve 15 is tightly attached to the wall of the center hole of the grinding roller 6.

[0025] like Figure 4 As shown, in order to adjust the gap size between the grinding roller shaft and the grinding roller, as another embodiment, the grinding roller shaft 5 is outer-coated with a shaft sleeve 17 located in the grinding roller mounting groove 4, the shaft sleeve 17 is tightly attached to the outer circumferential surface of the grinding roller shaft 5, and a grinding roller gap 18 is provided between the grinding roller 6 and the shaft sleeve 17.

[0026] In order to make the crushing more complete and efficient, Figure 4 As shown, the gap between the grinding roller 6 and the grinding roller shaft 5 in the upper grinding roller installation groove on the same grinding roller bracket 1 is larger than the gap between the grinding roller 6 and the grinding roller shaft 5 in the lower grinding roller installation groove. Figure 5 As shown, the raceway 21 of the grinding ring 20 corresponding to the grinding roller 6 installed in the upper grinding roller installation groove is located outside the raceway 21 of the grinding ring 20 corresponding to the grinding roller 6 installed in the lower grinding roller installation groove.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A roller grinding roller, characterized in that: The invention comprises at least two grinding roller supports stacked up and down, a mounting through hole is provided in the middle part of the grinding roller supports, the mounting through hole is sleeved on the driving shaft, a multi-layer grinding roller mounting groove surrounding the grinding roller supports is provided on the outer peripheral surface of the grinding roller supports, a grinding roller shaft is also installed on the grinding roller supports and penetrates into each layer of grinding roller mounting grooves from top to bottom, a grinding roller is outer-circumscribed on the grinding roller shaft, the grinding roller and the grinding roller shaft are clearance-matched, the number of the grinding roller shafts installed on the upper grinding roller supports is less than the number of the grinding roller shafts installed on the lower grinding roller supports, and the outer diameter of the grinding roller on the upper grinding roller supports is greater than the outer diameter of the grinding roller on the lower grinding roller supports.

2. The roller grinding roller according to claim 1, characterized in that: The grinding roller shafts of the upper layer and the grinding roller shafts of the lower layer are staggered with each other.

3. The roller grinding roller according to claim 1, characterized in that: An upper grinding roller mounting groove and a lower grinding roller mounting groove are provided on one of the grinding roller brackets; an upper mounting through hole communicating with the upper grinding roller mounting groove is provided on the upper portion of the grinding roller bracket; a lower mounting through hole communicating with the lower grinding roller mounting groove is provided on the lower portion of the grinding roller bracket; a middle mounting through hole communicating with both the upper grinding roller mounting groove and the lower grinding roller mounting groove is provided on the middle portion of the grinding roller bracket; the grinding roller rotating shaft penetrates into the upper mounting through hole, the middle mounting through hole and the lower mounting through hole; and the grinding roller rotating shaft and the grinding roller bracket are provided with an installation limiting mechanism.

4. The roller grinding roller according to claim 3, characterized in that: The installation limit mechanism comprises an upper mounting sleeve sleeved in the upper mounting through hole, a limiting ring is provided at the upper end of the upper mounting sleeve, the outer diameter of the limiting ring is larger than the inner diameter of the upper mounting through hole, an elastic retaining ring is provided between the lower part of the upper mounting sleeve and the upper wall of the upper grinding roller mounting groove, the installation limit mechanism also comprises a middle mounting sleeve, a limiting ring is provided at the upper end of the middle mounting sleeve, the outer diameter of the limiting ring is larger than the inner diameter of the middle mounting through hole, an elastic retaining ring is provided between the lower part of the middle mounting sleeve and the upper wall of the lower grinding roller mounting groove, the installation limit mechanism also comprises a lower mounting sleeve, a limiting ring is provided at the upper end of the lower mounting sleeve, the outer diameter of the limiting ring is larger than the inner diameter of the lower mounting through hole; a lower limiting ring is provided on the inner hole wall of the lower mounting sleeve, and the lower end of the grinding roller rotating shaft abuts against the lower limiting ring.

5. The roller grinding roller according to claim 4, characterized in that A multi-layer adjusting sleeve is sleeved between the grinding roller and the grinding roller rotating shaft, a gap is arranged between the adjusting sleeve and the grinding roller rotating shaft, and the outer peripheral surface of the adjusting sleeve is closely attached to the wall of the central hole of the grinding roller.

6. The roller grinding roller according to claim 4, characterized in that The grinding roller shaft is outer-mounted with a shaft sleeve located in the grinding roller installation groove, the shaft sleeve is tightly attached to the outer circumferential surface of the grinding roller shaft, and a grinding roller gap is provided between the grinding roller and the shaft sleeve.

7. The roller grinding roller according to any one of claims 1 to 6, characterized in that On the same grinding roller bracket, the gap between the grinding roller and the grinding roller rotating shaft in the upper grinding roller installation groove is larger than the gap between the grinding roller and the grinding roller rotating shaft in the lower grinding roller installation groove.

8. The roller grinding roller according to any one of claims 3 to 6, characterized in that The raceway of the grinding ring corresponding to the grinding roller installed in the upper grinding roller installation groove is located outside the raceway of the grinding ring corresponding to the grinding roller installed in the lower grinding roller installation groove.

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