Uniform air distribution wear-resistant device of powder concentrator frame

Abstract

The utility model discloses a uniform air distribution wear-resistant device of a powder concentrator frame, which comprises a powder concentrator frame and a uniform air distribution wear-resistant device, the powder concentrator frame comprises an inner layer frame and an outer layer frame, the inner layer frame is positioned on the inner side of the outer layer frame, and the inner layer frame and the outer layer frame are connected through the uniform air distribution wear-resistant device; the uniform air distribution wear-resisting device comprises a first uniform air distribution wear-resisting plate and a second uniform air distribution wear-resisting plate; the first uniform air distribution wear-resisting plate comprises a first base plate and a ceramic chip, and the bottom of the first base plate is of an upwards-bent arc-shaped structure; the second uniform air distribution wear-resisting plate comprises a second substrate and a ceramic chip; and the first uniform air distribution wear-resisting plate and the second uniform air distribution wear-resisting plate are uniformly arranged between the inner-layer frame and the outer-layer frame in a staggered manner. According to the uniform air distribution wear-resistant device, air at the air outlet of the powder concentrator can be uniform, turbulent flow cannot be generated, the powder selecting efficiency of the powder concentrator can be improved, the wear-resistant ceramic plate is long in service life and long in replacement period, and the operation rate of equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder classifiers, in particular to a uniform wind distribution and wear-resistant device for a powder classifier frame. Background Art

[0002] The uniform air distribution device (i.e., uniform air distribution plate) installed on the powder selector frame of the existing cement plant is a steel plate of two sizes, both of which are welded on the frame. The steel plate is made of Q235B material. However, during use, the uniform air distribution plate made of Q235B material is severely worn and has a short service life. Later, the uniform air distribution plate was replaced with wear-resistant materials such as Q345B. The service life of the uniform air distribution plate made of Q345B material still cannot meet the production needs. The uniform air distribution plate of the powder selector frame is easy to wear. When it needs to be repaired or replaced, the downtime is long and the replacement is troublesome, which affects the operation rate of the equipment. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a uniform air distribution and wear-resistant device for a powder classifier frame in view of the deficiencies of the above-mentioned prior art. The uniform air distribution and wear-resistant device for the powder classifier frame can make the wind at the air outlet of the powder classifier (which is also the outlet for qualified finished products) uniform without generating turbulence, thereby improving the powder selection efficiency of the powder classifier. The wear-resistant ceramic sheets have a long service life and a long replacement cycle, thereby improving the operation rate of the equipment.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] A uniform air distribution and wear-resistant device for a powder classifier frame, comprising a powder classifier frame and the uniform air distribution and wear-resistant device, wherein the powder classifier frame comprises an inner frame and an outer frame, wherein the inner frame is located inside the outer frame, and the inner frame and the outer frame are connected via the uniform air distribution and wear-resistant device;

[0006] The uniform wind distribution wear-resistant device comprises a first uniform wind distribution wear-resistant plate and a second uniform wind distribution wear-resistant plate;

[0007] The first uniform wind distribution wear-resistant plate comprises a first substrate and a ceramic sheet, the bottom of the first substrate is an upwardly curved arc structure, the outer surface of the first substrate is fixedly connected with the ceramic sheet, and the first uniform wind distribution wear-resistant plate is detachably connected to the inner frame and the outer frame through a connecting piece;

[0008] The second uniform wind distribution wear-resistant plate comprises a second substrate and a ceramic sheet, the second substrate is fixedly connected to the inner frame and the outer frame, and the outer surface of the second substrate is fixedly connected to the ceramic sheet;

[0009] The first uniform wind-dividing wear-resistant plate and the second uniform wind-dividing wear-resistant plate are alternately and uniformly arranged between the inner layer frame and the outer layer frame.

[0010] As a further improved technical solution of the utility model, the first substrate and the second substrate are both made of steel plates.

[0011] As a further improved technical solution of the utility model, a ceramic sheet is fixedly connected to the outer surface of the first substrate by ceramic glue.

[0012] As a further improved technical solution of the utility model, the first uniform wind distribution wear-resistant plate is connected to the inner frame and the outer frame by bolts.

[0013] As a further improved technical solution of the present invention, the second substrate is fixedly connected to the inner frame and the outer frame by welding.

[0014] As a further improved technical solution of the utility model, the outer surface of the second substrate is fixedly connected with a ceramic sheet by ceramic glue.

[0015] The beneficial effects of the utility model are:

[0016] In the first uniform air distribution wear-resistant plate, the first substrate is pasted with ceramic sheets with ceramic glue, and then connected to the frame with bolts (it can be replaced as a whole). In the second uniform air distribution wear-resistant plate, the second substrate is first welded to the frame, and then the ceramic sheets are pasted with ceramic glue. The first uniform air distribution wear-resistant plate is made into a spoon shape, that is, the bottom is an arc-shaped structure that bends upward, which is conducive to uniform air distribution. The second uniform air distribution wear-resistant plate is made into a straight shape and is shorter than the first uniform air distribution wear-resistant plate (the wear of the first uniform air distribution wear-resistant plate will be less than that of the second uniform air distribution wear-resistant plate). The first uniform air distribution wear-resistant plate and the second uniform air distribution wear-resistant plate in the frame are staggered and evenly arranged. The first uniform air distribution wear-resistant plate and the second uniform air distribution wear-resistant plate in the frame can make the wind at the outlet of the powder classifier (which is also the outlet for qualified finished products and the outlet of the upper shell) uniform without generating turbulence, which can improve the powder selection efficiency of the powder classifier and increase the hourly output of the powder classifier. Compared with the existing steel plates, the first substrate and the outer surface of the first substrate are pasted with wear-resistant ceramic sheets, which have a longer service life and a long replacement cycle, and can improve the operation rate of the equipment.

[0017] The first uniform wind distribution wear-resistant plate and the second uniform wind distribution wear-resistant plate of different lengths and shapes are currently used. The surface hardness of the wear-resistant ceramic plate can reach about HRC70. After more than one year of use, there is basically no wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the powder selecting machine of the utility model.

[0019] Figure 2 It is the front view of the powder selection machine frame of the utility model.

[0020] Figure 3 It is a top view of the powder selection machine frame of the utility model.

[0021] Figure 4 (a) is a schematic diagram of the structure of the first uniform wind distribution wear-resistant plate of the utility model.

[0022] Figure 4 (b) is a cross-sectional view of the first uniform wind distribution wear-resistant plate of the utility model.

[0023] Figure 5 (a) is a schematic diagram of the structure of the second uniform air distribution wear-resistant plate of the utility model.

[0024] Figure 5 (b) is a cross-sectional view of the second uniform wind distribution wear-resistant plate of the utility model. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0026] like Figure 1 As shown, the powder selector includes an upper shell 1, a frame 2, a lower shell 4, a coarse powder hopper 6, a coarse powder discharge pipe 7 and a guide vane assembly 5. The upper shell 1, the frame 2 and the lower shell 4 are fixedly connected in sequence. The guide vane assembly 5 is located inside the lower shell 4 and is bolted to the lower flange of the frame 2. The coarse powder hopper 6 is located below the guide vane assembly 5 and inside the lower shell 4. The coarse powder hopper 6 is connected to the inside of the lower shell 4 through a support pipe by welding, and the coarse powder discharge pipe 7 is connected to the bottom of the coarse powder hopper 6. Through the powder selection of the powder selector, qualified fine powder passes through the frame 2 of the powder selector and then goes out from the discharge port of the upper shell 1 (the flow direction of fine powder is as shown by the thick arrow in the upper shell 1), and unqualified coarse powder passes through the coarse powder hopper 6 and the coarse powder discharge pipe 7 of the powder selector and then goes to the vertical mill for re-grinding.

[0027] Based on the above-mentioned powder classifier, this embodiment provides a uniform air distribution and wear-resistant device on the frame 2 of a powder classifier, including a frame 2 and a uniform air distribution and wear-resistant device 3. The frame 2 includes an inner frame and an outer frame. The inner frame is located on the inner side of the outer frame. The inner frame and the outer frame are connected by the uniform air distribution and wear-resistant device 3.

[0028] like Figure 2 and Figure 3 As shown, the uniform wind distribution wear-resistant device 3 includes a first uniform wind distribution wear-resistant plate 8 and a second uniform wind distribution wear-resistant plate 9.

[0029] like Figure 4 As shown in (a) and (b), the first uniform wind distribution wear-resistant plate 8 includes a first substrate 13 and a ceramic sheet 11. The bottom of the first substrate 13 is an upward curved structure. The outer surface of the first substrate 13 is fixedly connected to the ceramic sheet 11. The first uniform wind distribution wear-resistant plate 8 is detachably connected to the inner frame and the outer frame through connecting parts.

[0030] In this embodiment, the outer surface of the first substrate 13 is fixedly connected with a ceramic sheet 11 by ceramic glue 12. The first uniform wind distribution wear-resistant plate 8 has a bolt hole on one side and is connected to the inner frame by bolts 10, and a bolt hole on the other side and is connected to the outer frame by bolts 10.

[0031] like Figure 5 As shown in (a) and (b), the second uniform wind distribution wear-resistant plate 9 includes a second substrate 14 and a ceramic sheet 11. One side of the second substrate 14 is welded and fixed to the inner frame, and the other side is welded and fixed to the outer frame. The outer surface of the second substrate 14 is fixedly connected to the ceramic sheet 11 by ceramic glue 12.

[0032] The first uniform wind distribution wear-resistant plates 8 and the second uniform wind distribution wear-resistant plates 9 are staggered and evenly arranged between the inner layer frame and the outer layer frame.

[0033] The first substrate 13 and the second substrate 14 are both made of steel plates.

[0034] In the first uniform wind-dividing wear-resistant plate 8, the first substrate 13 is glued to the ceramic sheet 11 with ceramic glue 12, and then connected to the frame 2 with bolts 10 (can be replaced as a whole). In the second uniform wind-dividing wear-resistant plate 9, the second substrate 14 is first welded to the frame 2, and then the ceramic sheet 11 is glued with ceramic glue 12. The first uniform wind-dividing wear-resistant plate 8 is made into a spoon shape, that is, the bottom is an arc-shaped structure that bends upward, which is conducive to uniform wind distribution. The second uniform wind-dividing wear-resistant plate 9 is made into a straight shape and is shorter than the first uniform wind-dividing wear-resistant plate 8 (the wear of the first uniform wind-dividing wear-resistant plate 8 will be less than that of the second uniform wind-dividing wear-resistant plate 9). The first uniform wind-dividing wear-resistant plate 8 and the second uniform wind-dividing wear-resistant plate 9 in the frame 2 are staggered and evenly arranged. The first uniform air distribution wear-resistant plate 8 and the second uniform air distribution wear-resistant plate 9 in the frame 2 can make the wind at the outlet of the powder classifier (which is also the outlet for qualified finished products, the outlet of the upper shell 1) uniform without generating turbulence, thereby improving the powder selection efficiency of the powder classifier and increasing the hourly output of the powder classifier. The wear-resistant ceramic sheet 11 has a long service life and a long replacement cycle, thereby improving the operation rate of the equipment.

[0035] Now, first uniform wind distribution wear-resistant plates 8 and second uniform wind distribution wear-resistant plates 9 of different lengths and shapes are used, wherein the surface hardness of the wear-resistant ceramic sheet 11 can reach about HRC70, and there is basically no wear after more than one year of use.

[0036] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A uniform air distribution and wear-resistant device for a powder classifier frame, comprising a frame and a uniform air distribution and wear-resistant device, wherein the frame comprises an inner frame and an outer frame, wherein the inner frame is located inside the outer frame, and the inner frame and the outer frame are connected by the uniform air distribution and wear-resistant device; Features: The uniform wind distribution wear-resistant device comprises a first uniform wind distribution wear-resistant plate and a second uniform wind distribution wear-resistant plate; The first uniform wind distribution wear-resistant plate comprises a first substrate and a ceramic sheet, the bottom of the first substrate is an upwardly curved arc structure, the outer surface of the first substrate is fixedly connected with the ceramic sheet, and the first uniform wind distribution wear-resistant plate is detachably connected to the inner frame and the outer frame through a connecting piece; The second uniform wind distribution wear-resistant plate comprises a second substrate and a ceramic sheet, the second substrate is fixedly connected to the inner frame and the outer frame, and the outer surface of the second substrate is fixedly connected to the ceramic sheet; The first uniform wind-dividing wear-resistant plate and the second uniform wind-dividing wear-resistant plate are alternately and uniformly arranged between the inner layer frame and the outer layer frame.

2. The uniform air distribution and wear-resistant device for the powder selector frame according to claim 1 is characterized in that: The first substrate and the second substrate are both made of steel plates.

3. The uniform air distribution and wear-resistant device for the powder classifier frame according to claim 1 is characterized in that: The outer surface of the first substrate is fixedly connected with a ceramic sheet by ceramic glue.

4. The uniform air distribution and wear-resistant device for the powder selector frame according to claim 3 is characterized in that: The first uniform wind distribution wear-resistant plate is connected to both the inner frame and the outer frame by bolts.

5. The uniform air distribution and wear-resistant device for the powder classifier frame according to claim 1 is characterized in that: The second substrate is fixedly connected to the inner frame and the outer frame by welding.

6. The uniform air distribution and wear-resistant device for the powder classifier frame according to claim 5 is characterized in that: The outer surface of the second substrate is fixedly connected with a ceramic sheet by ceramic glue.

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