CN108579887B - Roller press roller assembly structure of non-ridgeline block roller surface - Google Patents

Abstract

The invention belongs to the field of pressure rollers, and in particular relates to an assembly structure of a roller press with a non-ridge segmented roller surface, comprising a roller shaft and a plurality of detachable segmented roller surfaces; the roller shaft includes a cylindrical shaft center, a set Annular blocking blocks at both ends of the cylindrical axis and a plurality of special-shaped projections distributed radially along the surface of the axis; the lower end of the segmented roller surface is provided with a special-shaped groove matching the special-shaped projections ; The segmented roller surface is fixed on the axis; a plurality of the segmented roller surfaces form a circumferential surface. 1. The assembly structure of the new type of non-ridged and segmented roller surface of the roller press is simple in structure, which makes it easy to disassemble and assemble during the overall maintenance of the roller surface of the roller press, and saves a lot of manpower and material resources; 2. When the roller surface is partially worn Partial replacement is possible, which greatly reduces maintenance costs; 3. The new structure shortens the average maintenance time of 3 days to 0.5 days, saving maintenance costs, improving the operation efficiency of the equipment, and the promotion effect is obvious.

Description

Roller assembly structure of roller press with non-ridged and segmented roller surface

technical field

The invention belongs to the field of pressing rollers, and in particular relates to an assembly structure of pressing rollers of a rolling machine with non-ridged and segmented roller surfaces.

Background technique

Since the late 1980s, when the design and manufacturing technology of roller presses from German KHD Company was introduced into China, after more than 20 years of development, its technical reliability and power-saving advantages have been recognized and accepted by the majority of users. The roller press can replace the ball mill pre-grinding system with high energy consumption and low efficiency, and can reduce steel consumption and noise. It is suitable for the construction of new plants and can also be used for technical transformation of old plants, increasing the output of the ball mill system by 30-50%.

The working principle of the roller press is that two rollers rotate in opposite directions, and under the action of the extrusion force F of the hydraulic cylinder, the materials passing through them are extruded into denser flat sheets. The material passing between the two pressing rollers is subjected to a pressing force of about 100 MPa in the pressure zone, which makes the granular material crushed and produces a large number of cracks. Therefore, the roller of the roller press is the core component of the normal operation of the roller press. A lot of work has been done at home and abroad for the research on the wear-resistant technology of the roller surface of the roller press, including the integral casting type, the overall surfacing type, the surfacing inserting type, the carbide stud type, the block type and the hard Methods such as alloy sintering formula are the research results of different periods. However, for a long time, when the pressure roller of the roller press is seriously worn and needs to be repaired, the integral or sleeved roller sleeves need to remove the reducer, frame, bearings, etc. in sequence, so that the pressure roller or roller sleeve can be taken out and carried out. It is very inconvenient to repair or replace the roller sleeve by surfacing welding. In addition, the quality of integral forging is difficult to guarantee, and the manufacturing cost of large-diameter pressure rollers or roller sleeves is relatively high.

The invention patent with the authorized notification number CN2364968Y discloses a block-assembled pressing roller of a roller press, in which a plurality of roller surface blocks are arranged on the axial surface of the roller shaft. The roller shaft is a polygonal cylinder, and the roller surface block is a fan-shaped block. The roller shaft and the fan-shaped block on the roller surface are assembled by a double-wedge clamping device to form a block-assembled pressing roller. The block form of the pressure roller of this structure is polygonal, and the roller surface matched with it is fan-shaped. During actual work, when the material pressure is all loaded on a single roller surface, the fixed structure between the roller surface and the roller shaft is not reliable. .

Contents of the invention

The object of the present invention is to overcome the defects in the prior art, and provide an assembly structure of rollers for a roller press with a non-ridged segmented roller surface.

In order to achieve the above object, the present invention adopts the following technical solutions:

A roller press roller assembly structure with a non-ridge segmented roller surface, including a roller shaft and a plurality of detachable segmented roller surfaces; the roller shaft includes a cylindrical shaft center, arranged on the cylindrical Ring-shaped blocking blocks at both ends of the shaft center and a plurality of special-shaped protrusions distributed radially along the surface of the shaft center; the lower end of the segmented roller surface is provided with a special-shaped groove matching the special-shaped protrusions; the The segmented roller surface is fixed on the shaft center; a plurality of the segmented roller surfaces form a circumferential surface.

The contact ends of the adjacent segmented roller surfaces may be helical or involute to complete the staggered arrangement of the segmented roller surfaces on the axis.

The blocking block is a shoulder or an end baffle of the roller shaft.

The end baffle and the special-shaped protrusion on the shaft are fixed by bolts.

The special-shaped protrusions can be one or more combinations of trapezoidal blocks, square blocks or inverted trapezoidal blocks.

The block roller surface and the shaft center are fixed by locking bolts or glue.

Compared with prior art, the beneficial effect of the present invention is:

The advantages and positive effects of the present invention are: 1. The assembly structure of the pressure roller of the new type of non-ridgeline segmented roller surface of the roller press is simple in structure, which makes the roller surface of the roller press easy to disassemble and assemble during the overall maintenance, and saves a lot of manpower Material resources; 2. When the roller surface is partially worn, it can be partially replaced, which greatly reduces the maintenance cost; 3. The new structure shortens the average maintenance time of 3 days to 0.5 days, which saves the maintenance cost and improves the operation efficiency of the equipment. The promotion effect is obvious.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the roller shaft of the present invention;

Fig. 2 is the overall assembly schematic diagram of the present invention;

Fig. 3 is a schematic diagram of the segmented roll surface of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Figure 1-3 shows a rolling press roller assembly structure with a non-ridge segmented roll surface, including a roll shaft 1 and a plurality of detachable segmented roll surfaces 2; the roll shaft includes a cylindrical shaft center 11. Annular blocking blocks arranged at both ends of the cylindrical axis and a plurality of special-shaped projections distributed radially along the surface of the axis; the special-shaped projections can be directly processed on the roller center, or the roller center can be used It is realized by way of slotting. The special-shaped protrusions 21 may be one or a combination of trapezoidal blocks, square blocks or inverted trapezoidal blocks. The block roller surface and the shaft center are fixed by locking bolts 22 or glue.

The lower end of the block roller surface is provided with a special-shaped groove matching the special-shaped protrusion; the block roller surface is fixed on the axis; multiple pieces of the block roller surface form a circle noodle. The blocking block is the shoulder 13 of the roller shaft or the end baffle 3 . The end baffle and the special-shaped projection on the shaft are fixed by bolts 31 . The end baffle 3 can adopt a whole steel plate blanking structure, and can be realized in a block structure. The contact surface between the end baffle plate 3 and the segmented roller surface 2 can adopt a planar contact structure, and can also be realized by means of arc surface contact or inclined surface combination contact between protrusions and grooves. The roll core 11 and the segmented roll surface 2 fit together through special-shaped protrusions and special-shaped grooves, and are radially fixed by locking bolts 22 or glue. The axial fixation of the segmented roll surface 2 is mainly through the shaft shoulder 13 and The end baffle 3 is completed, and it can also be realized by means of two shoulders or two end baffles.

The contact ends of the adjacent segmented roller surfaces can be helical or involute to complete the staggered arrangement of the segmented roller surfaces on the axis, so as to achieve the effect of multiple roller surfaces bearing load, so that a single The force on the roller surface is reduced, and the fixing is more reliable and convenient. The roller surface is made of composite nodular cast iron material inlaid with hard alloy studs to increase the wear resistance of the roller surface. Inlaid hard alloy, high chromium cast iron, nodular cast iron, high-quality alloy steel surfacing and other methods can also be used.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (4)

1. The roller press roller assembly structure of the non-ridgeline block roller surface is characterized by comprising a roller shaft and a plurality of detachable block roller surfaces; the roll shaft comprises a cylindrical shaft center, annular blocking blocks arranged at two ends of the cylindrical shaft center and a plurality of special-shaped protrusions distributed along the radial direction of the shaft center surface; the lower end of the blocking roller surface is provided with a special-shaped groove matched with the special-shaped protrusion; the blocking roller surface is fixed on the shaft center; a plurality of the block roller surfaces form a circumferential surface;

the contact ends of the adjacent segmented roller surfaces are spiral lines or involute lines so as to finish staggered arrangement of the segmented roller surfaces on the axle center;

the blocking block is a shaft shoulder or an end baffle of the roll shaft.

2. The roll press roll assembly structure of the non-ridgeline block roll surface of claim 1 wherein the end shield is bolted to the profiled boss on the hub.

3. The roll press roller assembly structure of the non-ridgeline block roll surface of claim 1, wherein the shaped protrusions are one or more combinations of trapezoidal blocks, square blocks or inverted trapezoidal blocks.

4. The roll press roller assembly structure of the non-ridgeline block roll surface of claim 1, wherein the block roll surface and the shaft center are fixed by a locking bolt or glue.

Images