Drum screen of pre-grinding system of cement grinding mill

Abstract

The utility model relates to the technical field of drum screens, in particular to a drum screen of a pre-grinding system of a cement grinding mill. According to the technical scheme, the device comprises a bottom plate, an electric push rod, a connecting plate and a supporting plate, fixing plates are installed on the two sides of the outer wall of the upper end of the bottom plate, a protective cover is installed on the outer wall of one side of each fixing plate, the connecting plate is installed on one side of the upper end of the inner wall of each protective cover, and a cover plate is arranged on the outer wall of the upper end of each connecting plate; electric push rods are installed on the outer walls of the two sides of the connecting plate, connecting blocks are installed on the outer walls of the lower ends of the electric push rods, supporting plates are rotatably installed in the connecting blocks, and brushes are installed on the outer walls of the upper ends of the supporting plates. And the material screening efficiency of the screening barrel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of drum screens, and specifically relates to a drum screen for a pre-grinding system of a cement mill. Background Technique

[0002] Pre-grinding in a cement mill is a pre-treatment process in the cement grinding process, aiming to pre-pulverize clinker and other raw materials through extrusion, crushing, etc. to improve their grindability and enhance the efficiency and energy-saving effect of subsequent grinding operations. The drum screen can screen and recycle the materials crushed by the roller press, so that the unqualified materials are sent back to the roller press for secondary crushing to ensure that the diameter of the materials meets the requirements.

[0003] In the prior art during use, although there are many benefits, there are still the following problems. It lacks a cleaning structure for the screen of the drum screen, resulting in some materials getting stuck in the mesh holes of the screen, affecting the screening efficiency of the screen for materials. Content of the Utility Model

[0004] The purpose of the utility model is to provide a drum screen for a pre-grinding system of a cement mill to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A drum screen for a pre-grinding system of a cement mill, including a bottom plate, an electric push rod, a connecting plate, and a support plate. Fixed plates are installed on both sides of the outer wall of the upper end of the bottom plate. A protective cover is installed on the outer wall of one side of the fixed plate. One side of the upper end of the inner wall of the protective cover is provided with a connecting plate. A cover plate is arranged on the outer wall of the upper end of the connecting plate. Electric push rods are installed on both outer walls of the connecting plate. A connecting block is installed on the outer wall of the lower end of the electric push rod. A support plate is rotatably installed inside the connecting block. A brush is installed on the outer wall of the upper end of the support plate.

[0006] When using the drum screen for a pre-grinding system of a cement mill in this technical solution, materials enter from the left end of the screen barrel, and an external power structure drives the screen barrel to rotate in a circle. The materials are screened through the screen barrel until the screened materials are discharged separately through the protective cover and the inside of the screen barrel. The electric push rod drives the connecting block to move vertically, and the motor body drives the support plate to rotate in a circle, so that the brush rotates to the lower end. The brush contacts the outer wall of the screen barrel, and can clean the materials inside the screen holes of the screen barrel. After the electric push rod drives the support plate to reset, the brush is fluctuated by the fluctuating rod, so as to clean the brush. And an external vacuum cleaner collects the falling dust through a suction pipe.

[0007] Preferably, a screen barrel is rotatably installed inside the fixed plate, and the screen barrel is located inside the protective cover. The screen barrel screens the materials.

[0008] Preferably, bolts are provided on both sides of the outer wall of the cover plate, and the cover plate is connected to the connecting plate by bolts. The cover plate maintains the connection stability with the connecting plate by bolts.

[0009] Preferably, the outer wall of the upper end of the cover plate is plugged with dust suction pipes that are equidistantly distributed and parallel, and the dust suction pipes are connected to the inside of the connecting plate. The dust suction pipes are connected to an external vacuum cleaner to vacuum the inside of the connecting plate.

[0010] Preferably, the support plate passes through the outer wall of one end of the connection block and is provided with a motor body, the motor body is connected to the outer wall of the connection block, and the motor body drives the support plate to rotate in a circle, thereby adjusting the use position of the brush.

[0011] Preferably, a sealing gasket is fixedly attached to the outer wall of the upper end of the support plate, and the sealing gasket is in contact with the outer wall of the lower end of the connecting plate. The sealing gasket ensures the sealing between the support plate and the connecting plate.

[0012] Preferably, the inner wall of the connecting plate is provided with equidistant and parallel wave rods, and the wave rods and the brushes are arranged in a cross shape. The wave rods move the brushes.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of cleaning the screen barrel by arranging a wave rod, an electric push rod and a brush, the material enters through the left end of the screen barrel, and the external power structure drives the screen barrel to rotate in a circle, the material is screened through the screen barrel, until the screened material is discharged through the protective cover and the inside of the screen barrel respectively, and the electric push rod drives the connecting block to move vertically, the motor body drives the support plate to rotate in a circle, so that the brush rotates to the lower end, the brush contacts the outer wall of the screen barrel, and can clean the material inside the screen hole of the screen barrel, maintain the relative cleanliness of the screen hole, and ensure the screening efficiency of the screen barrel for the material, after the electric push rod drives the support plate to reset, the brush is fluctuated by the wave rod, so as to clean the brush, and the external vacuum cleaner collects the fallen dust through the dust suction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the bottom plate structure of the utility model;

[0015] Figure 2 It is a partial enlarged schematic diagram of the connecting plate structure of the utility model;

[0016] Figure 3 It is a cross-sectional schematic diagram of the connecting plate structure of the utility model;

[0017] Figure 4 It is an enlarged schematic diagram of the support plate structure of the utility model.

[0018] In the figure: 1. Bottom plate; 11. Fixed plate; 12. Protective cover; 13. Sieve barrel; 14. Connecting plate; 15. Cover plate; 16. Dust suction pipe; 17. Fluctuating rod; 2. Electric push rod; 21. Connecting block; 22. Support plate; 23. Motor body; 24. Sealing gasket; 25. Brush. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4 , two embodiments provided by the present invention:

[0021] Embodiment 1: A drum screen of a pre-grinding system for a cement mill, including a bottom plate 1, an electric push rod 2, a connecting plate 14 and a support plate 22. Fixed plates 11 are installed on both sides of the outer wall of the upper end of the bottom plate 1. A protective cover 12 is installed on the outer wall of one side of the fixed plate 11. A connecting plate 14 is installed on one side of the upper end inner wall of the protective cover 12. A cover plate 15 is arranged on the outer wall of the upper end of the connecting plate 14. Electric push rods 2 are installed on the outer walls of both sides of the connecting plate 14. As is well known to those skilled in the art, the drum screen device of the present invention also needs to provide an electric push rod 2 and a motor body 23 to make it work normally. And as is well known to those skilled in the art, the provision of the electric push rod 2 and the motor body 23 is common, and they both belong to conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience. A connecting block 21 is installed on the outer wall of the lower end of the electric push rod 2. A support plate 22 is rotatably installed inside the connecting block 21. A brush 25 is installed on the outer wall of the upper end of the support plate 22.

[0022] A sieve barrel 13 is rotatably installed inside the fixed plate 11. The sieve barrel 13 is located inside the protective cover 12. The sieve barrel 13 screens the materials.

[0023] Bolts are arranged on the outer walls of both sides of the cover plate 15, and the cover plate 15 is connected to the connecting plate 14 through bolts. The cover plate 15 maintains the connection stability with the connecting plate 14 through bolts. The materials enter through the left end of the sieve barrel 13, and an external power structure drives the sieve barrel 13 to rotate in a circle. The materials are screened through the sieve barrel 13 until the screened materials are discharged separately through the inside of the protective cover 12 and the sieve barrel 13.

[0024] Embodiment 2: A drum screen of a cement mill pre-grinding system comprises a base plate 1, an electric push rod 2, a connecting plate 14 and a support plate 22, wherein fixed plates 11 are installed on both sides of the upper outer wall of the base plate 1, a protective cover 12 is installed on one side of the outer wall of one side of the fixed plate 11, a connecting plate 14 is installed on one side of the upper end of the inner wall of the protective cover 12, a cover plate 15 is provided on the upper outer wall of the connecting plate 14, electric push rods 2 are installed on the outer walls of both sides of the connecting plate 14, a connecting block 21 is installed on the outer wall of the lower end of the electric push rod 2, a support plate 22 is rotatably installed inside the connecting block 21, and a brush 25 is installed on the outer wall of the upper end of the support plate 22.

[0025] A screen barrel 13 is rotatably mounted inside the fixed plate 11, and the screen barrel 13 is located inside the protective cover 12. The screen barrel 13 screens the material.

[0026] Bolts are arranged on the outer walls of both sides of the cover plate 15, and the cover plate 15 is connected to the connecting plate 14 by bolts. The cover plate 15 maintains the connection stability with the connecting plate 14 by bolts.

[0027] The outer wall of the upper end of the cover plate 15 is plugged with dust suction pipes 16 that are equidistantly distributed and parallel, and the dust suction pipes 16 are connected to the inside of the connecting plate 14. The dust suction pipes 16 are connected to an external vacuum cleaner, so as to vacuum the inside of the connecting plate 14.

[0028] The support plate 22 passes through the outer wall of one end of the connection block 21 and is provided with a motor body 23, which is connected to the outer wall of the connection block 21. The motor body 23 drives the support plate 22 to rotate in a circle, thereby adjusting the use position of the brush 25.

[0029] A sealing gasket 24 is fixedly attached to the outer wall of the upper end of the support plate 22, and the sealing gasket 24 is in contact with the outer wall of the lower end of the connecting plate 14. The sealing gasket 24 ensures the sealing between the support plate 22 and the connecting plate 14.

[0030] The inner wall of the connecting plate 14 is provided with equidistantly parallel wave bars 17, and the wave bars 17 and the brushes 25 are arranged in a cross shape. The wave bars 17 move the brushes 25, and the materials enter through the left end of the screen barrel 13, and the external power structure drives the screen barrel 13 to rotate in a circle, and the materials are screened through the screen barrel 13 until the screened materials are respectively discharged through the protective cover 12 and the inner part of the screen barrel 13, and the electric push rod 2 drives the connecting block 21 to move vertically, and the motor body 23 drives the support plate 22 to rotate in a circle, so that the brushes 25 rotate to the lower end, and the brushes 25 contact the outer wall of the screen barrel 13, so as to clean the materials inside the screen holes of the screen barrel 13, maintain the relative cleanliness of the screen holes, and ensure the screening efficiency of the screen barrel 13 for the materials. After the electric push rod 2 drives the support plate 22 to reset, the brushes 25 are fluctuated by the wave bars 17, so as to clean the brushes 25, and the external vacuum cleaner collects the fallen dust through the dust suction pipe 16.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A drum screen of a cement mill pre-grinding system, comprising a bottom plate (1), an electric push rod (2), a connecting plate (14) and a supporting plate (22), characterized in that: A fixing plate (11) is installed on both sides of the outer wall of the upper end of the base plate (1), a protective cover (12) is installed on one side of the outer wall of the fixing plate (11), a connecting plate (14) is installed on one side of the upper end of the inner wall of the protective cover (12), a cover plate (15) is provided on the outer wall of the upper end of the connecting plate (14), an electric push rod (2) is installed on both sides of the outer wall of the connecting plate (14), a connecting block (21) is installed on the outer wall of the lower end of the electric push rod (2), a support plate (22) is rotatably installed inside the connecting block (21), and a brush (25) is installed on the outer wall of the upper end of the support plate (22).

2. The drum screen of the cement mill pre-grinding system according to claim 1, characterized in that: A sieve barrel (13) is rotatably mounted inside the fixed plate (11), and the sieve barrel (13) is located inside the protective cover (12).

3. The drum screen of the cement mill pre-grinding system according to claim 1, characterized in that: Bolts are provided on the outer walls of both sides of the cover plate (15), and the cover plate (15) is connected to the connecting plate (14) via the bolts.

4. The drum screen of the cement mill pre-grinding system according to claim 1, characterized in that: The outer wall of the upper end of the cover plate (15) is plugged and installed with dust suction pipes (16) that are equidistantly distributed in parallel, and the dust suction pipes (16) are connected to the inside of the connecting plate (14).

5. The drum screen of the cement mill pre-grinding system according to claim 4, characterized in that: The support plate (22) passes through the outer wall of one end of the connection block (21) and is provided with a motor body (23), and the motor body (23) is connected to the outer wall of the connection block (21).

6. The drum screen of the cement mill pre-grinding system according to claim 5, characterized in that: A sealing gasket (24) is fixedly attached to the outer wall of the upper end of the support plate (22), and the sealing gasket (24) is in contact with the outer wall of the lower end of the connecting plate (14).

7. The drum screen of the cement mill pre-grinding system according to claim 1, characterized in that: The inner wall of the connecting plate (14) is provided with equidistant and parallel wave rods (17), and the wave rods (17) and the brushes (25) are arranged in a cross shape.

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