CN204911617U - Can dismantle roller skin unit and wear -resisting roller of high pressure roller mill quick assembly disassembly formula is structure - Google Patents

Abstract

The utility model discloses a can dismantle roller skin unit and wear -resisting roller of high pressure roller mill quick assembly disassembly formula is structure relates to the mining machinery field, can dismantle roller skin unit for one kind, roller skin unit comprises high -carbon super abrasion -resistant alloy layer of system and well carbon structure steel layer, roller skin unit is the secter pat, and the cross sectional shape is top, bottom cavity and the outside protrusion of both ends symmetry. Compared with the prior art, the utility model protects a wear -resisting roller of high pressure roller mill quick assembly disassembly formula be that quick assembly disassembly formula high abrasion roller system convenient, the stable performance is traded to the structure, effectively solved the problem that traditional roller skin working life is short, trade an inefficiency.

Description

Detachable roller skin unit and high-pressure roller mill quick disassembly wear-resistant roller system structure

technical field

The utility model belongs to the field of mining machinery manufacturing, in particular to the field of high-pressure roller mill manufacturing, and in particular to a fast dismountable wear-resistant roller system structure for a high-pressure roller mill.

Background technique

High-pressure roller mills are commonly used equipment in the field of stone and mineral processing. At present, the roller skins of high-pressure roller mills usually use cast manganese steel integral roller skins. The roller skin is a vulnerable part. Due to poor working conditions and severe wear, the replacement and maintenance frequency of the roller skin of the high pressure roller mill is relatively high. The traditional roller skin has a short working life and a high frequency of parts replacement and maintenance. When replacing parts, the entire roller system needs to be disassembled and assembled, resulting in low replacement efficiency and greatly reducing production efficiency.

Utility model content

One of the purposes of the utility model is to provide a detachable roller skin unit, which is convenient for replacement and stable in performance, and effectively solves the problems of short working life and low replacement efficiency of traditional roller skins.

The technical solution is: a detachable roll skin unit, a detachable roll skin unit, the roll skin unit is composed of a high-carbon super wear-resistant alloy layer and a medium-carbon structural steel layer; the roll skin unit is a fan-shaped block , the cross-sectional shape is hollow at the top and bottom, and both ends protrude outward symmetrically.

As a preference, the middle carbon structural steel layer is respectively provided with a roll skin positioning flange end face, a roll skin positioning roller threaded hole, a roll skin end face, a roll skin cone surface, and a roll skin positioning pressure ring threaded hole; The end face of the positioning flange and the end face of the roll skin are perpendicular to each other, and the tapered surface of the roll skin and the end face of the roll skin are on the same plane.

Preferably, the medium carbon structural steel layer is also provided with threaded holes for disassembly.

The second purpose of the utility model is to provide a fast dismountable wear-resistant roller system structure for a high-pressure roller mill.

The technical solution is: a fast dismountable wear-resistant roller system structure for a high-pressure roller mill, including a main shaft, a roller and a roller skin. The main shaft is provided with a main shaft shoulder. composition.

Preferably, there are more than two roll skin units, and the bottoms of both ends of the roll skins composed of detachable roll skin units protrude outward.

Preferably, the roll train structure further includes a pressure ring, and the pressure ring is connected to the raised upper surface of the roll skin.

Preferably, the roller is a cylindrical sleeve with flanges at both ends and a hollow cylinder inside, and the roller is respectively provided with a roller shoulder, a heating inner hole, a roller flange surface, a roller Through holes and roller threaded holes.

Preferably, the press ring is a hollow ring with a press ring through hole, a press ring threaded hole and a press ring tapered surface.

Preferably, the main shaft and the roller, and the roller and the detachable roller skin unit are connected by flat keys.

Preferably, the detachable roll skin unit is connected to the pressure ring through a hexagon head bolt, and the conical surface of the pressure ring is connected to the conical surface of the roll skin.

Compared with the prior art, the utility model has the beneficial effects of:

The roller of the utility model is hot-fitted on the main shaft through key connection and interference heat, and the positioning shoulder is machined on the roller, which is assembled and positioned with the corresponding step on the main shaft. The high wear-resistant alloy roller skin is positioned on the end flange of the roller through its end assembly, and the circumferential and axial positioning are provided by key connection and bolt connection respectively. The high-strength pressure ring is assembled to the roll skin through the tapered surface, and the screw axially tightens the pressure on the roll skin through the cone to provide radial positioning for the roll skin. When repairing and replacing parts, only the pressure ring and roller skin need to be disassembled to realize quick replacement and maintenance of the roller skin.

The utility model is extremely rapid in changing parts, and has a high working life. On the premise of solving the low efficiency of traditional roll skin replacement and maintenance, the use of high wear-resistant alloy roll skins greatly improves the working life of the roll skins, shortens downtime for parts replacement, and greatly improves production efficiency.

Description of drawings

Fig. 1 is the utility model main shaft schematic diagram;

Fig. 2 is a schematic diagram of the utility model roller;

Fig. 3 is a schematic cross-sectional view of the utility model roller;

Fig. 4 is the utility model roller skin schematic diagram;

Fig. 5 is a schematic cross-sectional view of the utility model roller skin;

Fig. 6 is a schematic diagram of the pressure ring of the utility model;

Fig. 7 is a schematic cross-sectional view of the pressure ring of the utility model;

Fig. 8 is an overall schematic diagram of the assembly of the roller skin and the main shaft of the utility model;

Fig. 9 is a schematic cross-sectional view of the assembly assembly of the roller skin and the main shaft of the present invention;

In the figure, 1 is a main shaft, 2 is a roller, 3 is a roller skin, 4 is a pressure ring, 5 is a hexagon head bolt, and 6 is a flat key.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Fig. 1-9, a quick dismountable wear-resistant roller system structure of a high-pressure roller mill includes a main shaft 1, a roller 2, a roller skin 3 and a pressure ring 4. The bottom of both ends of the roller skin 3 protrudes outwards, the roller skin 3 is detachable, and the roller skin 3 is composed of three roller skin units.

The main shaft 1 is provided with a main shaft shoulder 1a.

The material of the roller 2 is carbon structural steel, and the roller 2 is provided with a roller shoulder 2b. The appearance of the roller 2 is a cylindrical sleeve with flanges at both ends, and the inside is a hollow cylinder. Both the outer surface and the inner surface are machined mating surfaces, which are respectively used to assemble the high wear-resistant roller skin and the main shaft of the roller system. The flange is axially drilled to form an assembly relationship with the high wear-resistant roller skin to heat the inner hole 2a. The flange is provided with a roller flange surface 2c matched with the roller skin, and one end of the flange connected with the roller skin has a roller through hole 2e, and the other end has a roller threaded hole 2d.

Each roller skin unit is one-third fan-shaped, the radial section shape is hollow at the top and bottom, and both ends protrude outward symmetrically. The material of the radial outer layer is high-carbon super wear-resistant alloy, and the material of the inner layer is medium-carbon structural steel. The middle carbon structural steel layer is provided with a roller skin positioning flange end surface 3a, a roller skin positioning roller threaded hole 3b, a roller skin end surface 3c, a roller skin cone surface 3d and a roller skin positioning pressure ring threaded hole 3e. The roller skin positioning flange end face 3a and the roller skin end face 3c are perpendicular to each other, and the roller skin cone surface 3d and the roller skin end face 3c are on the same plane. The medium carbon structural steel layer is also provided with a threaded hole 3f for disassembly, which is used for installing eyebolts during disassembly. These holes and surfaces are formed by the following methods: the radially inner cylindrical surface of the medium carbon structural steel layer is machined with the mating surface, the keyway is used to implement the positioning with the roller 2, the tapped holes are tapped on the end surface of the medium carbon structural steel layer, and the roller The barrel end flange forms an assembly relationship. The tapered surface is also processed on the medium carbon structural steel layer, and the tapped hole is tapped on the large diameter side of the tapered surface, and the screw assembly method is used to form a taper fit with the high-strength pressure ring.

The pressure ring 4 is a hollow ring with a pressure ring through hole 4b, a pressure ring threaded hole 4c and a pressure ring tapered surface 4a. These holes and surfaces are formed by the following methods: the radial inner circumference of the tapered surface is used to form a fit with the roller skin cone surface; Additional tapped holes on the end face are used to install jack bolts to realize the function of jacking and dismounting. The pressure ring 4 adopts a high-strength pressure ring.

During installation, the roller 2 is assembled with the main shaft 1 by using the flat key 6, and the axial positioning is formed by assembling the roller shoulder 2b and the main shaft shoulder 1a. The roller skin unit uses a flat key 6, and the roller skin positioning flange end face 3a is positioned with the roller flange surface 2c, and the hexagonal head bolt 5 is screwed into the roller skin positioning roller threaded hole 3b through the roller through hole 2e, and the hexagonal The head bolt 5 is screwed into the threaded hole 2d of the roller, and bears against the end face 3c of the roller skin to complete the pre-positioning of the roller skin. The three roller skins are assembled in the same way to form a complete circle. The pressure ring 4 is guided into the cone surface 3d of the roll skin through the cone surface 4a of the pressure ring, screwed into the threaded hole 3e of the roll skin through the through hole 4b of the pressure ring with the hexagon head bolt 5, and the pressure ring is axially tightened with the hexagon head bolt 5, and the pressure ring The radial pressure is exerted on the roll skin by the taper surface of the pressure ring to realize the final positioning of the roll skin. The hex head bolt 5 is pre-screwed into the threaded hole 4c of the pressure ring, which is used to push and disassemble the pressure ring. After the three roller skin units are assembled, a complete circle is formed to realize the working function of the roller skin 3.

Under the premise of solving the problem of low efficiency in the maintenance work of the roller skin of the high-pressure roller mill, the utility model adopts a high wear-resistant alloy as the material of the roller skin, which greatly improves the working life of the roller skin, shortens the time of stopping the machine for replacement, and thus greatly improves the production efficiency.

Claims (10)

1. A detachable roll skin unit, characterized in that: the roll skin unit is composed of a high-carbon alloy layer and a medium-carbon structural steel layer; the roll skin unit is a fan-shaped block, and the cross-sectional shape is hollow at the top and bottom. Both ends protrude outward symmetrically. 2. The detachable roller skin unit according to claim 1, characterized in that: the middle carbon structural steel layer is respectively provided with a roller skin positioning flange end face, a roller skin positioning roller threaded hole, a roller skin end face, a roller The tapered surface of the leather and the threaded hole of the roller skin positioning pressure ring; the end surface of the positioning flange of the roller skin and the end surface of the roller skin are perpendicular to each other, and the cone surface of the roller skin and the end surface of the roller skin are on the same plane. 3. The detachable roll skin unit according to claim 2, characterized in that: the medium carbon structural steel layer is also provided with threaded holes for disassembly. 4. A fast dismountable wear-resistant roller system structure for a high-pressure roller mill, comprising a main shaft, a roller and a roll skin, the main shaft is provided with a main shaft shoulder, and it is characterized in that: the roll skin is defined by claims 1-3 A detachable roller skin unit according to any one of the claims. 5. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 4, characterized in that: there are more than two roller skin units, and the two roller skins composed of detachable roller skin units The bottom of the end protrudes outward. 6. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 5, characterized in that: the roller system structure also includes a pressure ring, and the pressure ring is connected to the protrusion of the roller skin On the surface. 7. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 4, characterized in that: the roller is a cylindrical sleeve with flanges at both ends and a hollow cylinder inside, The roller is respectively provided with a roller shoulder, a heating inner hole, a roller flange surface, a roller through hole and a roller threaded hole. 8. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 6, characterized in that: the pressure ring is a hollow circle with a pressure ring through hole, a pressure ring threaded hole and a pressure ring cone surface. ring. 9. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 4, characterized in that: the main shaft and the roller, and the roller and the detachable roller skin unit are connected by flat keys. 10. The fast dismountable wear-resistant roller system structure of the high-pressure roller mill according to claim 8, characterized in that: the detachable roller skin unit and the pressure ring are connected by hexagon head bolts, and the pressure ring The ring cone surface is connected with the roller skin cone surface.