CN204448159U - For the separate type air intake spiral case of outstanding rod flour mill - Google Patents

Abstract

The utility model discloses a detached air inlet volute for a hanging stick mill, which comprises an air inlet volute body, and the air inlet volute body includes an air inlet volute placed coaxially with the suspension stick mill base, etc. A volute case with a radius arc structure, a support is provided under the volute case; a plurality of flexible flexible parts that form an angle with the axis of the volute case are evenly arranged on the inner wall of the volute case. An air guide pipe, the flexible air guide pipe communicates with the hanger mill base through bolts. The utility model has the advantage that the volute casing is connected with the frame of the suspension roller mill through bolts through a plurality of flexible air ducts evenly distributed on the circumference, so that the gap between the volute casing and the frame of the suspension roller mill is Forming a soft connection, the volute casing is not affected by the vibration of the body, and the volute casing will not be damaged, prolonging the service life of the volute casing.

Description

Separate air inlet volute for stick mill

technical field

The utility model relates to a hanging stick mill, in particular to a separate air inlet volute used for a hanging stick mill.

Background technique

Suspension roller mill is widely used in the grinding of mineral materials such as metallurgy, building materials, chemicals, mines, etc. The suspension roller mill is a grinding body composed of a grinding roller and a grinding ring to crush and grind the materials entering the grinding zone. When working, the main shaft of the suspension roller mill rotates, driving the grinding roller to revolve around the grinding ring, and at the same time, the grinding roller conducts self-propagation. The grinding roller is affected by the centrifugal force and the reaction force when extruding the material, which leads to the incomplete balance of the superposition of the forces everywhere, causing the machine body to vibrate. The existing air inlet volute base forms a hard connection with the body of the suspension roller mill through bolts. When the suspension roller mill is working, the vibration of the body is transmitted to the air inlet volute. Long-term vibration will cause the air inlet volute to Cracks appear in the casing, and the inlet volute casing is damaged.

Contents of the invention

The purpose of the utility model is to provide a separate air inlet volute for a hanging stick mill that can overcome cracks in the volute shell caused by vibration.

In order to achieve the above object, the utility model can take the following technical solutions:

The separate air inlet volute for the hanging stick mill of the utility model includes the air inlet volute body, and the air inlet volute body includes an equal-radius circle placed coaxially with the hanging stick mill base. A volute case with an arc structure, a bracket is provided under the volute case; a plurality of flexible wind guides that form an angle with the axis of the volute case are evenly arranged on the inner wall of the volute case tube, and the flexible air guide tube communicates with the hanger mill base through bolts.

The cross-section of the volute casing is a quadrilateral structure, the width is the same from the air inlet to the rear, and the height gradually decreases.

The four corners of the cross-section of the volute casing are all right angles or rounded corners, or the upper two corners may be rounded corners, and the lower two corners may be right angles.

The utility model has the advantage that the volute casing is connected with the frame of the suspension roller mill through bolts through a plurality of flexible air ducts evenly distributed on the circumference, so that the gap between the volute casing and the frame of the suspension roller mill is Forming a soft connection, the volute casing is not affected by the vibration of the body, and the volute casing will not be damaged, prolonging the service life of the volute casing.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a sectional view along the line A-A of Fig. 1 .

Detailed ways

As shown in Figures 1-3, the separate air inlet volute for the hanging stick mill described in the utility model includes the air inlet volute body, and the air inlet volute body includes the The volute casing 2 of the equal-radius circular arc structure placed coaxially on the seat 1, the base 1 of the suspension stick mill is a regular polygonal structure (the figure is a regular octagonal structure, and it can also be a regular quadrilateral, regular pentagon, Regular hexagonal or regular heptagonal structure), a bracket 3 is provided under the volute case 2; eight flexible air guides that form an angle with the axis of the volute case are evenly arranged on the inner wall of the volute case 2 The pipe 4 and the flexible air guide pipe 4 communicate with the suspension stick mill base 1 through connecting bolts 5 . The cross section of the volute case 2 is a quadrilateral structure, with the same width from the air inlet to the rear, and the height gradually decreases (the height of the air inlet of the volute case 2 is the highest, and the height of the tail is the lowest); the cross section of the volute case 1 All four corners are right-angled or rounded; or the upper two corners are rounded and the lower two are right-angled.

In the utility model, the volute case 2 and the suspension stick mill base 1 adopt a separate structure, that is, the volute case 2 and the base 1 are separated and coaxially installed, and the volute case 2 and the base 2 pass through The flexible air guide pipes 4 evenly distributed on the circumference are connected. This soft connection can isolate the vibration of the body from being transmitted to the volute casing 2, so that the volute casing 2 is not affected by the vibration of the body and prolongs the life of the volute casing 2. service life.

Claims (4)

1. A separate air inlet volute for a stick mill, including an air inlet volute body, characterized in that: the air inlet volute body includes the same A volute casing (2) with an equal-radius circular arc structure placed on the shaft, a bracket (3) is provided under the volute casing (2); and it is evenly arranged on the inner wall of the volute casing (2) There are a plurality of flexible air guide pipes (4) forming an angle with the axis of the volute casing, and the flexible air guide pipes (4) are connected to the hanger mill base (1) through bolts (5) connected. 2. The separated air inlet volute for hanging stick mill according to claim 1, characterized in that: the cross section of the volute casing (2) is a quadrilateral structure, and the width from the air inlet to the rear is Same, the height gradually decreases. 3. The separated air inlet volute for the suspension stick mill according to claim 2, characterized in that: the four corners of the cross section of the volute housing (1) are all right angles or rounded. 4. The separated air inlet volute for hanging stick mill according to claim 2, characterized in that: the upper two corners of the cross section of the volute housing (1) are rounded, and the lower two corners are rounded. angle is a right angle.