CN217313679U - High-efficient pay-off spiller device of milling machine - Google Patents

Abstract

The utility model discloses a high-efficiency feeding shovel blade device for a pulverizer, which comprises a shovelling mechanism for throwing materials to a grinding area formed between a grinding roller and a grinding ring. The shovel plate, the shovel seat is installed on the shovel frame that rotates synchronously with the grinding roller through the plate structure connected by bolts, the front end of the shovel plate is low and the rear end is high, the upper plate body of the shovel plate in the grinding area is backward The bottom is bent at an angle so that the inclination angle of the upper plate body is smaller than the inclination angle of the middle and lower plate bodies where the scraper plate is outside the grinding area; the bolted plate structure includes a radially and vertically arranged installation plate I and a Plate II, Mounting Plate I is installed on the blade holder, Mounting Plate II is installed on the blade holder and is located on the front or rear side of Mounting Plate I, and the Mounting Plate I and Mounting Plate II are connected by evenly distributed bolt assemblies . The blade mechanism of the utility model has the advantages of strong impact resistance and large area for balanced feeding, which improves the working stability and production efficiency of the pulverizer.

Description

High-efficiency feeding blade device of mill

technical field

The utility model relates to the internal structure of a pulverizer, in particular to a high-efficiency feeding blade device for a pulverizer.

Background technique

Pulverizers are widely used in mining, chemical, construction, metallurgy and other industries and the grinding of various dry powder materials.

The working principle of the pulverizer is as follows: the material is uniformly and continuously fed into the grinding chamber of the main machine, and the shovel repeatedly scoops up the material and adds it to the grinding area formed between the grinding roller and the grinding ring for grinding. It can be seen that the blade plays an extremely important role in the abrasive process.

The prior art shovels are installed obliquely, and each grinding roller is provided with a corresponding shovel, which is used to shovel and throw the material to form a material flow in the grinding area. However, the existing problem is that the material flow is thrown into the grinding area. The grinding area is too concentrated and unbalanced, which affects the grinding efficiency of the grinding rollers, resulting in low production efficiency; and the blade is installed on the blade holder through the blade holder, and a set of bolt assemblies are used to fasten the blade holder and the blade. If the shovel and blade are hit by obstacles during operation, the bolt assembly is easily broken by shearing force, causing damage to the blade and requiring shutdown for maintenance, which greatly affects the normal operation of the grinding machine and delays the operation process.

In order to solve the problem of low production efficiency of the blade in the prior art, the utility model patent with the authorization announcement number CN205731446U discloses a "multilayer blade for Raymond mill", the technical solution is to set the blade structure There are at least two shovel plates. The shovel blade lifts and throws the material to the grinding area through two or more shovel plates. Because the throwing distribution is more uniform, the working efficiency of the grinding roller and the grinding ring can be greatly improved. .

However, due to the increased number of layers in the blade structure of "Multilayer Blade for Raymond Mill", the structure is complicated and the body is enlarged, which not only increases the production cost, but also occupies the space of the grinding chamber.

Utility model content

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a high-efficiency feeding blade device for a pulverizer that can run stably and has high working efficiency.

A high-efficiency feeding blade device for a pulverizer capable of solving the above-mentioned technical problems, its technical solution includes a shovel mechanism for throwing materials to a grinding area formed between a grinding roller and a grinding ring, and the shovel mechanism includes a shovel mounted on the shovel. The shovel plate on the blade holder, the blade holder is installed on the shovel blade frame that rotates synchronously with the grinding roller through the plate structure connected by bolts, the front end of the shovel plate is low and the rear end is high, the differences are:

1. The upper plate body of the scraper plate in the grinding zone is bent backward and downward at an angle so that the inclination angle of the upper plate body is smaller than the inclination angle of the middle and lower plate body of the scraper plate outside the grinding zone.

2. The bolted plate structure includes a radially and vertically arranged mounting plate I and a mounting plate II, the mounting plate I is mounted on the blade holder, and the mounting plate II is mounted on the blade holder and provided On the front or rear side of the mounting plate I, the mounting plate I and the mounting plate II are connected by evenly distributed bolt assemblies.

Further, the upper plate body is located in the lower part of the grinding zone.

Conventionally, inner and outer protection strips are respectively provided on the inner and outer parts of the middle and lower plate bodies.

The beneficial effects of the present utility model:

1. In the structure of the high-efficiency feeding blade device of the pulverizer of the present invention, since the inclination angle of the upper plate body of the shovel plate is smaller than the inclination angle of the middle and lower plate bodies, the shovel plate not only has the function of throwing materials, but also has the function of connecting. The material can be thrown at the upper and lower parts of the grinding area (balanced feeding), which increases the area of the grinding roller to grind the material and further improves the work efficiency.

2. The structure of the shovel mechanism of the utility model is particularly simple, which can be modified on the shovel plate of the prior art, and the cost is low and the effect is remarkable.

3. In the structure of the utility model, the blade mechanism is installed on the blade frame through the plate structure connected by bolts, which improves the mechanical performance of the blade mechanism, and changes the force of the bolt assembly fixing the blade mechanism from shearing to The tensile force greatly improves the bearing capacity of the bolt assembly, that is, the impact resistance of the blade mechanism.

Description of drawings

FIG. 1 is an axonometric view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of FIG. 1 .

Fig. 3 is a top view of Fig. 2 (with the grinding roller device removed).

FIG. 4 is an isometric view of the blade holder in the embodiment of FIG. 1 .

FIG. 5 is a front view of the blade mechanism in the embodiment of FIG. 1 .

FIG. 6 is a top view of FIG. 5 .

FIG. 7 is a side view of FIG. 5 .

Drawing number identification: 1, grinding roller; 2, grinding ring; 3, scraper plate; 3-1, upper plate body; 3-2, middle and lower plate body; 4, inner guard strip; 5, outer guard Strip; 6. Blade seat; 7. Bolted plate structure; 8. Blade holder; 9. Mounting plate I; 10. Mounting plate II; 11. Plum blossom frame; 12. Main engine spindle; 13. Grinding roller assembly.

Detailed ways

The technical solutions of the present utility model will be further described below with reference to the embodiments shown in the accompanying drawings.

The high-efficiency feeding shovel blade device of the pulverizer of the utility model comprises a shovel plate 3 arranged between the front and rear grinding rollers 1, and the grinding rollers 1 revolving on the grinding roller assembly 13 are rolled on the grinding rollers in a self-rotating manner. On the ring 2, a grinding zone is formed between each grinding roller 1 and the grinding ring 2. The grinding roller assembly 13 is mounted on the main shaft 12 of the main machine through a plum blossom frame 11, and the plum blossom frame 11 is connected to the main shaft of the main engine. The blade frame 8 is connected, the lower part of the blade frame 8 is located in the grinding chamber below the grinding zone, the blade plate 3 is inclined on the blade base 6, the front end is low and the rear end is high, the blade base 6. The plate structure 7 connected by bolts is installed at the bottom of the blade frame 8, and each scraper plate 3 in operation scoops up and throws the materials in the grinding chamber to the grinding area for crushing, as shown in Figure 1, Figure 2, Figure 6 3. As shown in Figure 4, the arrow in Figure 3 shows the direction in which the shovel plate 3 throws the material to the grinding area.

The scraper plate 3 includes an upper plate body 3-1 in the grinding area and a middle and lower plate body 3-2 outside the grinding area. The wedge between the rings 2 (the rear end is small and the front end is large), the rear end of the middle and lower plate body 3-2 is connected to the front end of the upper plate body 3-1, and the front end of the middle and lower plate body 3-2 (in the grinding Indoor) width is greater than the width of its rear end, the outer edge of the middle and lower plate body 3-2 is provided with an outer protection strip 5, and the inner edge of the middle and lower plate body 3-2 is provided with an inner protection strip 4, such as Figure 5, Figure 6, Figure 7.

After the upper plate body 3-1 is bent backward and downward at an angle, the inclination angle of the upper plate body 3-1 (the angle A with the horizontal plane) is smaller than the inclination angle of the middle and lower plate Angle B), the rear end of the upper plate body 3-1 after the inclination angle is reduced is aligned at the lower position of the grinding roller 1, as shown in Fig. 5 and Fig. 7 .

However, in the prior art, the upper plate body 3-1 and the middle and lower plate body 3-2 of the scraper plate 3 are at the same inclination angle, that is, the inclination angle of the upper plate body 3-1 is equal to the middle and lower plate body 3-2. 2 tilt angle.

The bolted plate structure 7 includes a radially and vertically arranged mounting plate I9 and a mounting plate II10, the mounting plate I9 is welded to the bottom of the blade holder 8, and the mounting plate II10 is welded to the blade holder 6. The inner side of the mounting plate I9 is on the rear side of the mounting plate I9, and the mounting plate I9 and the mounting plate II10 are connected by evenly distributed bolt assemblies; Driven by the shovel, the material is shoveled forward and fed backward to the grinding area. The bolts in each bolt assembly bear the tensile force in the tangential direction of the circumference, as shown in Figure 1, Figure 2, and Figure 3.

In the prior art, the bolted plate structure 7 is arranged perpendicular to the radial direction, and the bolts in each bolt assembly bear the shear force in the circumferential tangential direction. It can be known from the principle of structural mechanics that the tensile force of the bolts is far greater than that of the bolts. It is far greater than its shearing force, so the impact strength of the bolt plate assembly in the present invention is far greater than that of the traditional bolt plate assembly in the prior art.

The utility model changes the inclination angle of the upper plate body 3-1 of the scraper plate 3 in the prior art, so that the unmilled material thrown to the upper part between the grinding roller 1 and the grinding ring 2 falls by the upper plate. The body 3-1 is taken over and sent to the lower part between the grinding roller 1 and the grinding ring 2 for re-grinding, and the purpose of improving the work efficiency is achieved by increasing the material area of the grinding zone; by changing the bolts in the prior art The plate group structure greatly improves the impact resistance of the shovel mechanism, so that the shovel mechanism is not easily damaged when encountering obstacles, which effectively improves the working stability of the shovel mechanism, reduces the maintenance time, and improves the grinding machine. work efficiency.

Claims (3)

1. High-efficient pay-off spiller device of milling machine includes and throws the shovel material mechanism of sending to the district of milling that forms between grinding roller (1) and grinding ring (2), shovel material mechanism is including installing shovel flitch (3) on shovel blade holder (6), install on shovel blade holder (8) with grinding roller (1) synchronous pivoted shovel blade holder (8) through bolted connection's plate structure (7), the low rear end height of front end of shovel flitch (3), its characterized in that: the upper plate body (3-1) of the shoveling plate (3) in the grinding area is bent backwards and downwards by an angle, so that the inclination angle of the upper plate body (3-1) is smaller than that of the middle and lower plate body (3-2) of the shoveling plate (3) outside the grinding area; bolted connection's plate structure (7) are including radial and vertical mounting panel I (9) and mounting panel II (10) that set up, on mounting panel I (9) installation scraper knife rest (8), mounting panel II (10) are installed and are just located the front side or the rear side of mounting panel I (9) on scraper knife seat (6), are connected through the bolt assembly of equipartition between mounting panel I (9) and mounting panel II (10).

2. The efficient feeding scraper device for flour mills according to claim 1, characterized in that: the upper plate body (3-1) is arranged at the lower part of the grinding area.

3. The efficient feeding scraper device for flour mills according to claim 1 or 2, characterized in that: the inner side and the outer side of the middle-lower plate body (3-2) are respectively provided with an inner material protection batten (4) and an outer material protection batten (5).

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