CN211838177U - Extrusion roller sleeve for preparing fine-grained materials - Google Patents

Abstract

The utility model relates to a squeeze roll roller shell technical field specifically is a squeeze roll roller shell of preparation fine particle size material, including roller shell main part, wear-resisting rack and wear-resisting ring, roller shell main part excircle is equipped with wear-resisting rack along the axis direction, is equipped with wear-resisting ring along the circumferencial direction. The roller sleeve adopts a staggered form of a longitudinal wear-resistant rack and annular wear-resistant pieces perpendicular to the longitudinal direction along the circumference, a grid type wear-resistant structure consisting of the wear-resistant rack and the wear-resistant rings is formed on the surface of the roller sleeve of the squeeze roller, a plurality of closed shear zones in small areas are formed, the crushing effect on materials is greatly improved, the obtained product is small in granularity, the grain size reaches about 50% of that of a stud roller sleeve product, and the wear-resistant rack structure is independently adopted by about 75%. The upper ends of the wear-resistant rack and the wear-resistant ring are semicircular, no edges and corners exist, the wear-resistant rack and the wear-resistant ring are not easy to collapse, the service lives of the wear-resistant rack and the wear-resistant ring are prolonged, the wear resistance of the roller sleeve is obviously improved, the replacement period is shortened, the production efficiency is improved, and the economic benefit is good.

Description

A squeeze roller sleeve for preparing fine-grained materials

technical field

The utility model relates to the technical field of squeeze roller sleeves, in particular to a squeeze roller sleeve for preparing fine-grained materials.

Background technique

Roller presses are widely used in metallurgy, chemical industry, mining, and coal industries, and have many advantages such as energy saving, consumption reduction, and high degree of automation. They are used in powder production lines for grading and dispersing, which can improve the production efficiency of subsequent ball mills. The working principle of the roller press is that the material is fed from the top of the two rollers of the roller press, and is continuously brought between the extrusion rollers that rotate synchronously in the opposite direction. The fine material is discharged from the lower part or both ends of the squeeze roller. The core component of the roller press is the extrusion roller, and the roller sleeve of the extrusion roller is in direct contact with the material. During the whole working process, the roller sleeve is subjected to high stress abrasive wear, and the poor wear resistance of the roller sleeve seriously affects the refinement of the material. normal production. At present, there are three commonly used roller sleeve structures: composite casting roller sleeve, surfacing roller sleeve and stud roller sleeve. The preparation method of the composite casting roll sleeve is complicated. If the roll sleeve is damaged, it can only be replaced with a new one, which is a serious waste of resources. The surfacing roll sleeve can be repaired and used many times, but due to the different parts and degrees of damage to the roll sleeve, one damage is It needs to be stopped for repair, which takes a lot of time and has low production efficiency; the stud roller sleeve has the best wear resistance and is widely used in the material grinding industry. The shear zone of the roller facing the extruded ore is only about 50% of the lower half of the stud, the utilization rate is low, the granularity of the produced material is poor, and the stud will break and fall off after a period of use, causing the roller The particle size index of the pressed product decreases, the service life of the squeeze roller is short, and the economic benefit is poor.

The Chinese patent with application number 201820286003.X discloses a roller press extrusion roller (application date is March 1, 2018), and grooves are evenly distributed along the axis of the extrusion roller on the outer circumference of the extrusion roller base, A wear-resistant rack is embedded in the groove, which increases the fine-grain content of the material after rolling and prolongs the service life of the roller surface. However, this technical solution has the following shortcomings: ①A continuous shear band is formed by using wear-resistant racks instead of studs, but when the material enters the gap between the wear-resistant racks, it will move to both ends of the squeeze roller, Since there is no obstruction, the material can only be continuously discharged from both ends of the extrusion roller, and the particle size of the obtained material is not small enough; ② Since only a layer of self-generated material pads formed between the wear-resistant rack and the gap between the racks is used When the material is crushed, the crushing effect on the material is limited. In addition to affecting the particle size of the obtained material, it will also cause the roller sleeve to wear quickly, be replaced frequently, and the production efficiency is low; ③ The upper end of the wear-resistant rack is in the shape of a right angle, and the material enters the extrusion After the roll, it is easy to cause it to collapse and reduce the service life.

How to solve the above problems is the urgent task of the staff in the technical field.

Utility model content

The purpose of this utility model is to provide a squeeze roller sleeve for preparing fine-grained materials, and solve the following technical problems: 1. There are only studs or longitudinal wear-resistant racks on the main body of the roller sleeve, and the final prepared material product has a coarse particle size level, and The output rate is low; ②The wear resistance of the roller sleeve is poor, so it needs to be replaced frequently, and the production efficiency is low;

The utility model adopts the following technical solutions:

An extrusion roller sleeve for preparing fine-grained materials includes a roller sleeve main body, a wear-resistant rack and a wear-resistant ring. A wear ring is provided in the circumferential direction.

The main body of the roller sleeve includes a base body, a groove I, a groove II, a shaft hole and a keyway. The center is provided with a shaft hole, and the edge of the shaft hole is provided with a keyway. The groove I, the shaft hole and the keyway pass through the main body of the roller sleeve along the axis direction. The width of the groove I and the groove II are the same, and the depth of the groove I is greater than that of the groove Depth of groove II.

The wear-resistant rack includes a rack body and a groove III. The cross-section of the wear-resistant rack in the vertical length direction is similar to a rectangle, and the upper part is semi-circular. The wear-resistant rack is uniformly provided with grooves III along the length direction. The cross section of the groove III in the vertical length direction is in the shape of a rectangle, the bottom edge of which is a convex arc, and the radius of the arc is R.

The lower part of the wear-resistant rack is embedded in the groove I, the upper part is exposed outside the main body of the roller sleeve, and the wear-resistant rack and the groove I are fixed by gluing or interference fit.

The wear-resistant ring is a semi-circular ring, the inner radius of the semi-circular ring is r, the thickness of the wear-resistant ring is equal to the width of the wear-resistant rack, and the outer edge of the wear-resistant ring is semicircular.

The radius R of the arc of the groove III is equal to the value of the inner radius r of the wear ring.

A wear-resistant ring is embedded in the groove II and groove III, and the two wear-resistant rings are formed into a ring by brazing. heights are equal.

The thickness of the wear-resistant rack is 20mm-40mm, the thickness of the wear-resistant ring is 20mm-40mm, and the thickness of the wear-resistant rack of the same extrusion roller sleeve is equal to the thickness of the wear-resistant ring.

The height of the wear-resistant rack exposed from the main body of the roller sleeve is 5mm-12mm.

The utility model has the following beneficial technical effects:

1. The roller sleeve is connected by a longitudinal wear-resistant rack and an annular wear-resistant sheet perpendicular to the longitudinal direction along the circumference. A mesh-type wear-resistant structure composed of a wear-resistant rack and a wear-resistant ring is formed on the surface of the extrusion roller sleeve. The closed shear belts in multiple small areas greatly improve the crushing effect of the material, and the obtained product has a fine particle size, and the particle size reaches about 50% of the stud roller sleeve product, which is about 75% of the wear-resistant rack structure alone. .

2. The upper end of the wear-resistant rack and wear-resistant ring is semicircular, without edges and corners, and is not easy to collapse, which prolongs the service life of the wear-resistant rack and wear-resistant ring.

3. Due to the effective increase of the wear-resistant area, the wear resistance of the roller sleeve is greatly improved, the replacement cycle is reduced, the service life of the roller sleeve is extended by more than 3 times, the production efficiency is improved, and the economic benefit is good.

Description of drawings

Fig. 1 is a front view of a squeeze roller sleeve for preparing fine-grained materials according to the present invention;

Fig. 2 is the left side view of Fig. 1;

Fig. 3 is the sectional view of A-A surface in Fig. 1;

Fig. 4 is the sectional view of B-B surface in Fig. 1;

Fig. 5 is the sectional view of C-C plane in Fig. 1;

Figure 6 is a front view of the main body of the roller sleeve;

Fig. 7 is the left side view of Fig. 6;

Fig. 8 is the sectional view of D-D plane in Fig. 6;

Figure 9 is a front view of the wear-resistant rack;

Figure 10 is a cross-sectional view of the E-E plane in Figure 9;

Fig. 11 is a partial enlarged view at A in Fig. 10;

Figure 12 is a front view of the wear plate;

FIG. 13 is a left side view of FIG. 12 .

Description of reference numerals: 1. Main body of roller sleeve; 1-1, Base body; 1-2, Groove I; 1-3, Groove II; 1-4, Shaft hole; 1-5, Keyway; 2, Wear-resistant Rack; 2-1, main body of rack; 2-2, groove III; 3, wear ring.

Detailed ways

The technical solutions of the present utility model will be described in further detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

As shown in Figures 1 to 13, a squeeze roller sleeve for preparing fine-grained materials includes a sleeve body 1, a wear-resistant rack 2 and a wear-resistant ring 3. The outer circumference of the sleeve body 1 is provided with a line along the axis direction. The wear-resistant rack 2 and the outer circumference of the roller sleeve main body 1 are provided with a wear-resistant ring 3 along the circumferential direction.

The main body 1 of the roller sleeve includes a base body 1-1, a groove I1-2, a groove II1-3, a shaft hole 1-4 and a keyway 1-5. The outer circle of the base body 1-1 is uniformly provided with grooves I1-2 along the axis direction. , the outer circle of the base body 1-1 is evenly provided with grooves II1-3 along the circumferential direction, the center of the base body 1-1 is provided with a shaft hole 1-4, the edge of the shaft hole 1-4 is provided with a key groove 1-5, and the grooves I1-2 , The shaft hole 1-4 and the keyway 1-5 run through the main body 1 of the roller sleeve along the axis direction, the groove I1-2 and the groove II1-3 have the same width, the depth of the groove I1-2 is greater than the depth of the groove II1-3, The roll body can be made of alloy steel, which has good strength and toughness.

The wear-resistant rack 2 includes a rack main body 2-1 and a groove III 2-2. The cross-section of the wear-resistant rack 2 in the vertical length direction is similar to a rectangle, and its upper part is semicircular, without edges and corners, and is not easy to collapse. The service life of the wear-resistant rack; the wear-resistant rack 2 is uniformly provided with grooves III2-2 along the length direction, the cross section of the groove III2-2 in the vertical length direction is rectangular, and its bottom edge is a convex arc. The radius of the arc is R; the wear-resistant rack can be made of hard alloy and other wear-resistant materials, which can effectively improve the wear resistance of the roller sleeve.

The lower part of the wear-resistant rack 2 is embedded in the groove I1-2, and the upper part is exposed outside the main body 1 of the roller sleeve. The wear-resistant rack 2 and the groove I1-2 are fixed by glue or interference fit; After installing the wear-resistant rack 2, install the wear-resistant ring 3.

The wear-resistant ring 3 is a semi-circular ring, and the inner radius of the semi-circle is r; the thickness of the wear-resistant ring 3 is equal to the width of the wear-resistant rack 2, and the outer edge of the wear-resistant ring 3 is semi-circular without edges and corners. It is not easy to collapse and prolongs the service life of the wear-resistant ring 3; the radius R of the arc of the groove III2-2 is equal to the value of the inner circle radius r of the wear-resistant ring 3, which can ensure that the groove II1-3 and the groove III2- The bottom of the annular groove formed by 2 is on the same circumference, which is convenient for installing the wear-resistant ring 3. The wear-resistant ring 3 can be made of wear-resistant materials such as hard alloy, which can effectively improve the wear resistance of the roller sleeve.

Wear-resistant ring 3 is embedded in groove II1-3 and groove III2-2. The two wear-resistant rings 3 form a ring by brazing. Wear-resistant ring 3 exposes the height of the main body 1 of the roller sleeve and the wear-resistant rack. 2. The height of the exposed roll cover body 1 is equal.

The thickness of the wear-resistant rack 2 is 20mm-40mm, the thickness of the wear-resistant ring 3 is 20-40mm, and the thickness of the wear-resistant rack 2 of the same extrusion roller sleeve is equal to the thickness of the wear-resistant ring 3 .

The roller sleeve is in the form of a longitudinal wear-resistant rack and an annular wear-resistant sheet that is perpendicular to the longitudinal direction along the circumference. A mesh-type wear-resistant structure composed of a wear-resistant rack 2 and a wear-resistant ring 3 is formed on the surface of the extrusion roller sleeve. Multiple closed shear belts in small areas greatly improve the crushing effect of materials, and the obtained products have fine particle size.

The height of the wear-resistant rack 2 exposed from the main body 1 of the roller sleeve is 5mm-12mm, which is convenient for the crushing of materials.

Due to the closed shear belts of multiple small areas, the wear-resistant area is effectively increased, the wear resistance of the roller sleeve is greatly improved, the replacement cycle is reduced, the service cycle of the roller sleeve is extended by more than 3 times, and the production efficiency is improved. Economic benefits are good.

The keyway 1-5 is used to install the key to connect the roller sleeve with the roller shaft of the squeeze roller.

The above-mentioned embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, Substitution, combination and simplification are all included within the protection scope of the present invention.

Claims (3)

1. The utility model provides a preparation fine particle size material's squeeze roll roller shell which characterized in that: the roller sleeve comprises a roller sleeve main body (1), a wear-resistant rack (2) and a wear-resistant ring (3), wherein the wear-resistant rack (2) is arranged on the excircle of the roller sleeve main body (1) along the axis direction, and the wear-resistant ring (3) is arranged on the excircle of the roller sleeve main body (1) along the circumferential direction;

the roller sleeve main body (1) comprises a base body (1-1), a groove I (1-2), a groove II (1-3), a shaft hole (1-4) and a key groove (1-5), the excircle of the base body (1-1) is uniformly provided with grooves I (1-2) along the axis direction, the excircle of the base body (1-1) is uniformly provided with grooves II (1-3) along the circumferential direction, the center of the base body (1-1) is provided with a shaft hole (1-4), the edge of the shaft hole (1-4) is provided with a key groove (1-5), the groove I (1-2), the shaft hole (1-4) and the key groove (1-5) penetrate through the roller sleeve main body (1) along the axis direction, the width of the groove I (1-2) is the same as that of the groove II (1-3), and the depth of the groove I (1-2) is greater than that of the groove II (1-3);

the wear-resistant rack (2) comprises a rack main body (2-1) and grooves III (2-2), the cross section of the wear-resistant rack (2) in the vertical length direction is rectangular-like, the upper part of the wear-resistant rack is semicircular, the grooves III (2-2) are uniformly arranged in the wear-resistant rack (2) in the length direction, the cross section of the grooves III (2-2) in the vertical length direction is rectangular-like, the bottom edge of the grooves is in a raised arc shape, and the radius of the arc is R;

the lower part of the wear-resistant rack (2) is embedded in the groove I (1-2), the upper part of the wear-resistant rack is exposed out of the roller sleeve main body (1), and the wear-resistant rack (2) and the groove I (1-2) are fixed by gluing or interference fit;

the wear-resistant ring (3) is in a semicircular shape, the radius of the inner circle of the semicircular ring is r, the thickness of the wear-resistant ring (3) is equal to the width of the wear-resistant rack (2), and the outer edge of the circular ring of the wear-resistant ring (3) is semicircular;

the radius R of the arc of the groove III (2-2) is equal to the value of the radius R of the inner circle of the wear-resistant ring (3);

wear-resisting rings (3) are embedded into the grooves II (1-3) and the grooves III (2-2), the two wear-resisting rings (3) form a circular ring in a brazing mode, and the height of the wear-resisting rings (3) exposed out of the roller sleeve main body (1) is equal to the height of the wear-resisting racks (2) exposed out of the roller sleeve main body (1).

2. The squeeze roll shell for preparing fine grained material according to claim 1 wherein: the thickness of the wear-resistant rack (2) is 20-40 mm, the thickness of the wear-resistant ring (3) is 20-40 mm, and the thickness of the wear-resistant rack (2) of the same extrusion roller sleeve is equal to that of the wear-resistant ring (3).

3. The squeeze roll shell for preparing fine grained material according to claim 1 wherein: the height of the wear-resistant rack (2) exposed out of the roller sleeve main body (1) is 5mm-12 mm.

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