Magnetic wear-resistant stationary blade for vertical mill powder concentrator

Abstract

The utility model belongs to the technical field of grinding and powder selecting equipment, and particularly relates to a magnetic wear-resistant stationary blade for a vertical mill powder selecting machine. The magnetic wear-resistant stationary blade for the vertical mill powder concentrator comprises an external supporting ring, a supporting frame and a blade base plate, the supporting frame is located on the external supporting ring and circumferentially arranged, the whole supporting frame is of a V-shaped structure, one side of the supporting frame is fixedly connected with the external supporting ring through a plurality of first bolts, and the other side of the supporting frame is fixedly connected with the blade base plate through a plurality of second bolts. A plurality of magnetic ceramic patches of rectangular structures are fixed to the two sides of the blade base plate through a binder, the magnetic ceramic patches are symmetrically arranged on the two sides of the blade base plate in a rectangular array mode, and the area of the magnetic ceramic patches on the blade base plate is 5 / 6 of the area of the blade base plate. The side, away from the multiple magnetic ceramic patches, of the blade base plate is fixedly connected with the other side of the V-shaped structure of the supporting frame through multiple second bolts.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding and classifying equipment, specifically relating to a magnetic wear-resistant stationary blade for a vertical mill classifier. Background Technology

[0002] Vertical mill classifiers are widely used in cement production lines, including raw material mills, cement mills, coal mills, and in the metallurgical industry, such as slag vertical mills and steel slag vertical mills.

[0003] The stationary blades of vertical mill classifiers are mostly made of wear-resistant steel plates, including Hardox 450, Hardox 500, and Hardox 550 wear-resistant plates, as well as wear-resistant welded plates. Stationary blades suffer significant wear during long-term use or when exposed to highly abrasive materials, greatly shortening their service life. Severely worn stationary blades require replacement. Currently, although the stationary blades are bolted to the support frame, their weight and the limited operating space inside the vertical mill classifier make replacement very difficult, often requiring complete disassembly, which significantly impacts production and maintenance. Utility Model Content

[0004] The technical problem this invention aims to solve is that the stationary blades in a vertical mill classifier need to be replaced after severe wear. However, due to their heavy weight and the small operating space inside the vertical mill classifier, replacement is very difficult and requires complete disassembly, which significantly impacts production and maintenance.

[0005] To solve the above-mentioned technical problems, the present invention provides a magnetic wear-resistant stationary blade for a vertical mill classifier, comprising an outer support ring, a support frame, and a blade base plate. The support frame is arranged circumferentially on the outer support ring and has an overall V-shaped structure. One side of the support frame is fixedly connected to the outer support ring by multiple first bolts. Multiple rectangular magnetic ceramic patches are fixed to both sides of the blade base plate by adhesive, and the multiple magnetic ceramic patches are arranged symmetrically in a rectangular array on both sides of the blade base plate. The area of ​​the multiple magnetic ceramic patches on the blade base plate is 5 / 6 of the area of ​​the blade base plate. The side of the blade base plate away from the multiple magnetic ceramic patches is fixedly connected to the other side of the V-shaped structure of the support frame by multiple second bolts.

[0006] Preferably, the blade base plate is made of Q235 carbon structural steel, and the blade base plate is either a V-shaped or a planar structure.

[0007] Preferably, the magnetic ceramic patch is one of alumina ceramic or silicon nitride ceramic, and the internal magnetic ceramic patch is provided with magnetic particles.

[0008] Preferably, the outer surface of the magnetic ceramic patch is smooth, and the inner surface is rough.

[0009] Through the above technical solution, the smooth outer surface of the magnetic ceramic patch is conducive to adsorbing and removing metal dust, etc., without affecting the normal use of the vertical mill classifier. The rough inner surface increases the contact area between the adhesive and the blade substrate plate, making the adhesion more firm.

[0010] Preferably, the adhesive is a high-temperature resistant adhesive.

[0011] Preferably, the other ends of the plurality of first bolts and the plurality of second bolts are fixedly connected by nuts and washers.

[0012] Preferably, the plurality of second bolts are arranged in two rows, and the two rows of the plurality of second bolts are staggered, and the blade base plate is provided with corresponding fixing holes at the plurality of second bolts.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] This vertical mill classifier uses magnetic wear-resistant stationary blades. Magnetic ceramic patches are used to protect both sides of the blade substrate. Because the ceramic patches themselves are hard and magnetic, iron powder and magnetic powder are adsorbed onto the patch surface during production, forming a protective layer. This greatly extends the lifespan of the magnetic ceramic patches, thereby extending the overall service life of the stationary blades. It eliminates the need for complete replacement of the stationary blades; only the worn magnetic ceramic patches need to be replaced. Replacement is convenient and quick, without affecting normal equipment production and maintenance. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the blade substrate plate for a magnetic wear-resistant stationary blade used in a vertical mill classifier according to this utility model.

[0016] Figure 2 This is a three-dimensional cross-sectional view of the blade substrate plate of a magnetic wear-resistant stationary blade for a vertical mill classifier according to this utility model.

[0017] Figure 3 This utility model provides a structural diagram and cross-sectional view of the support frame and blade base plate connection structure for a magnetic wear-resistant stationary blade used in a vertical mill classifier.

[0018] Figure 4 This is a schematic structural diagram of the mounting frame, support frame, and blade base plate connection for a magnetic wear-resistant stationary blade used in a vertical mill classifier according to this utility model.

[0019] As shown in the figure:

[0020] 1. External support ring; 2. Support frame; 3. Blade base plate; 4. Multiple first bolts; 5. Adhesive; 6. Magnetic ceramic patch; 7. Multiple second bolts; 8. Fixing hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1:

[0024] As per the instruction manual Figure 1-4 As shown, a magnetic wear-resistant stationary blade for a vertical mill classifier includes an outer support ring 1, a support frame 2, and a blade base plate 3. The blade base plate 3 is made of Q235 carbon structural steel and has either a V-shaped or planar structure. The support frame 2 is located on the outer support ring 1 in a circular arrangement and has an overall V-shaped structure. One side of the support frame 2 is fixedly connected to the outer support ring 1 by multiple first bolts 4. Multiple rectangular magnetic ceramic patches 6 are fixed to both sides of the blade base plate 3 by adhesive 5. The multiple magnetic ceramic patches 6 are arranged symmetrically in a rectangular array on both sides of the blade base plate 3. The magnetic ceramic patches 6 are either alumina ceramic or silicon nitride ceramic and have magnetic particles inside. The outer surface of the magnetic ceramic patch 6 is smooth and the inner surface is rough. The adhesive 5 is a high-temperature resistant adhesive 5.

[0025] In this utility model, the area of ​​multiple magnetic ceramic patches 6 on the blade substrate plate 3 is 5 / 6 of the blade substrate plate 3. The side of the blade substrate plate 3 away from the multiple magnetic ceramic patches 6 is fixedly connected to the other side of the support frame 2V structure by multiple second bolts 7. The multiple second bolts 7 are arranged in double rows, and the two rows of multiple second bolts 7 are staggered. The blade substrate plate 3 is provided with corresponding fixing holes 8 at the multiple second bolts 7. The other ends of the multiple first bolts 4 and the multiple second bolts 7 are fixedly connected by nuts and washers.

[0026] In specific implementation of this utility model, the support frame 2 is used to fix the blade base plate 3 by multiple second bolts 7, and the support frame 2 is fixedly connected to the external support ring 1 by multiple first bolts 4. During use, the magnetic ceramic patch 6 uses the magnetism generated by the internal magnetic particles to cause iron powder and magnetic powder materials to be adsorbed on the outer surface to form a protective layer, which greatly extends the life of the magnetic ceramic patch 6 and reduces metal impurities in the powder. At the same time, it can reduce the wear of metal impurities on the equipment in subsequent steps. When the blade base plate 3 is in use, the wear on its surface does not require the entire blade base plate 3 to be replaced. Only the magnetic ceramic patch 6 at the worn position needs to be replaced. The replacement is convenient and quick and does not affect the normal production and maintenance of the equipment.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A magnetic wear-resistant static vane for a vertical mill powder concentrator, comprising an external support ring, a support frame and a vane base plate, the support frame is arranged in a circle on the external support ring, and the support frame as a whole is in a V-shaped structure, one side of the support frame is fixedly connected with the external support ring through a plurality of first bolts, characterized in that: The two sides of the blade base plate are fixed with a plurality of rectangular structure magnetic ceramic patches through an adhesive, and a plurality of the magnetic ceramic patches are symmetrically arranged in a rectangular array on the two sides of the blade base plate, the area of the plurality of the magnetic ceramic patches on the blade base plate is 5 / 6 of the blade base plate, and the side of the blade base plate away from the plurality of the magnetic ceramic patches is fixedly connected with the other side of the support frame V-shaped structure through a plurality of second bolts. ​ 2. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The blade base plate is Q235 grade carbon structural steel, and the blade base plate is one of a V-shaped structure or a planar structure.

3. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The magnetic ceramic patch is one of an alumina ceramic or a silicon nitride ceramic, and the internal magnetic ceramic patch is provided with magnetic particles.

4. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The outer surface of the magnetic ceramic patch is a smooth surface, and the inner surface is a rough surface.

5. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The adhesive is a high-temperature resistant adhesive.

6. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The other end of the plurality of first bolts and the plurality of second bolts is fixedly connected through a nut and a washer.

7. A magnetic wear-resistant stationary vane for a classifier of a vertical mill according to claim 1, characterized in that: The plurality of second bolts are arranged in two rows, and the two rows of the plurality of second bolts are staggered, and the blade base plate is provided with corresponding fixing holes at the plurality of second bolts.

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