Powder selecting device of cement grinding mill

Abstract

The utility model discloses a cement grinding mill powder selecting device which is characterized in that a crushing box body is arranged at the top of a powder selecting machine body through a supporting plate, a driving motor and a feeding pipe are fixed to the top of the crushing box body, a filter screen is arranged in the crushing box body, materials can fall onto the filter screen through the feeding pipe, and a horizontal shaft is installed on one side of the lower portion of a connecting shaft through a buffering assembly; a connecting shaft is rotatably mounted on the connecting shaft, a horizontal shaft is rotatably mounted on the connecting shaft, a pressing roller abutting against the filter screen is rotatably mounted on the horizontal shaft, a driving motor is started to drive the connecting shaft to rotate, then the pressing roller is driven by the horizontal shaft to do circular motion, the pressing roller can rotate around the horizontal shaft while moving, and bulk materials on the filter screen are pressed and dispersed; the pressing roller is stressed to move upwards to cross the lump materials to press and scatter the lump materials, the situation that the pressing roller cannot cross the lump materials and is damaged is avoided, and the pressed and scattered fine materials meeting the requirement can pass through the filter screen and fall into the powder concentrator body through the discharging pipe. Therefore, blockage of the cement powder concentrator can be avoided, normal operation of the cement powder concentrator is ensured, and powder concentration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production and processing, in particular to a cement grinding and powder selection device. Background Art

[0002] Cement mill powder classifier is an indispensable equipment in the cement production process. It can realize the dispersion and classification of materials and has a remarkable powder selection effect. It is the preferred equipment to improve the product quality of the grinding system after the implementation of the new cement standard.

[0003] However, when the existing cement powder classifier is used, cement materials are usually added directly into the cement powder classifier for powder selection. However, there are block materials in the cement materials, and most cement powder classifiers do not have filtering and grinding functions. If the block materials are directly added to the powder classifier, the cement powder classifier will be blocked, affecting the normal operation and powder selection efficiency of the cement powder classifier. Utility Model Content

[0004] The purpose of the present application is to provide a cement grinding powder selection device to solve the problem that the existing cement powder selection machine is unable to filter and grind block materials, thereby causing blockage of the cement powder selection machine and affecting the normal operation and powder selection efficiency of the cement powder selection machine.

[0005] In order to solve the above technical problems, the present application provides a cement grinding and powder selection device, comprising:

[0006] A powder selector body is supported and fixed by supporting legs, a crushing box is arranged on the top of the powder selector body through a supporting plate, a driving motor and a feeding pipe are fixed on the top of the crushing box, a filter is arranged in the crushing box, a connecting shaft located in the crushing box is fixed at one end of the output shaft of the driving motor, a horizontal shaft is installed on one side of the lower part of the connecting shaft through a buffer assembly, a pressure roller that contacts the filter is rotatably installed on the horizontal shaft, and a discharge pipe connected to the powder selector body is arranged at the bottom of the crushing box.

[0007] On the basis of the above embodiments, as a preferred implementation manner, the buffer assembly includes a T-shaped mounting groove arranged on one side of the lower part of the connecting shaft and a limit block located in the T-shaped mounting groove and matching the T-shaped mounting groove, a vertical buffer spring is fixed between the limit block and the T-shaped mounting groove, and the horizontal axis is fixedly connected to the limit block.

[0008] On the basis of the above embodiment, as a preferred implementation manner, a vibrator is further provided on the bottom side of the filter screen.

[0009] It should be explained in detail in the scheme that the crushing box is also provided with an arc-shaped grinding net located below the filter net, and the mesh of the arc-shaped grinding net is smaller than the mesh of the filter net;

[0010] Correspondingly, the lower end of the connecting shaft passes through the filter screen and is fixed with a grinding body located in the arc-shaped grinding screen.

[0011] It should be further explained that the inner bottom of the crushing box is also provided with an inclined material guide plate located below the arc-shaped grinding mesh and corresponding to the feed pipe.

[0012] On the basis of the above embodiment, as a preferred implementation manner, the number of the feeding pipes is two, and the two feeding pipes are respectively arranged on both sides of the driving motor.

[0013] Compared with the prior art, the utility model provides a cement mill powder selection device, comprising a powder selection machine body supported and fixed by supporting legs, a crushing box body is arranged on the top of the powder selection machine body through a supporting plate, a driving motor and a feeding pipe are fixed on the top of the crushing box body, a filter screen is arranged in the crushing box body, when in use, the material can enter the filter screen in the crushing box body through the feeding pipe, a connecting shaft located in the crushing box body is fixed at one end of the output shaft of the driving motor, a horizontal shaft is installed on one side of the lower part of the connecting shaft through a buffer assembly, and a filter screen connected to the filter screen is rotatably installed on the horizontal shaft The conflicting rollers can start the driving motor to drive the connecting shaft to rotate, and then drive the rollers to make circular motion through the horizontal axis. While the rollers are moving, they can rotate around the horizontal axis to achieve the crushing and dispersion of the block materials on the filter screen. The setting of the buffer component can achieve that when the block materials are large, the rollers are forced to move upward to pass over the block materials to crush them, avoiding the rollers from being damaged by not being able to pass over the block materials. The bottom of the crushing box is provided with a discharge pipe connected to the powder classifier body. After crushing, the fine materials that meet the requirements can pass through the filter screen and the discharge pipe to fall into the powder classifier body for powder selection. This can avoid the blockage of the cement powder classifier, ensure the normal operation of the cement powder classifier and improve the powder selection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0015] Figure 1 A schematic diagram of the structure of a cement grinding and powder selection device provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of the internal structure of a crushing box provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of a T-shaped mounting groove structure of a crushing box provided in an embodiment of the present application;

[0018] In the figure: 1. Support legs; 2. Powder selector body; 3. Support plate; 4. Crushing box; 5. Driving motor; 6. Feed pipe; 7. Filter screen; 8. Connecting shaft; 9. Horizontal shaft; 10. Pressing roller; 11. Feeding pipe; 12. T-shaped mounting groove; 13. Limiting block; 14. Buffer spring; 15. Vibrator; 16. Arc-shaped grinding screen; 17. Grinding body; 18. Inclined guide plate. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0020] The core of this application is to provide a cement grinding powder selection device, which solves the problem that the existing cement powder selection machine cannot filter and grind block materials, thereby causing blockage of the cement powder selection machine and affecting the normal operation and powder selection efficiency of the cement powder selection machine.

[0021] Figure 1 This is a schematic diagram of the structure of a cement grinding and powder selection device provided in an embodiment of the present application. Figure 2 A schematic diagram of the internal structure of a crushing box provided in an embodiment of the present application, Figure 3 A schematic diagram of a T-shaped mounting groove structure of a crushing box provided in an embodiment of the present application is shown in FIG. Figures 1 to 3 shown.

[0022] Example 1

[0023] A cement mill powder selection device comprises a powder selection machine body 2, the powder selection machine body 2 is supported and fixed by a supporting leg 1 at the bottom, the structure and working principle of the powder selection machine body 2 can be referred to the prior art, a crushing box 4 is arranged on the top of the powder selection machine body 2 through a supporting plate 3, and in actual design, the supporting plate 3 and the crushing box 4 can be arranged as an integrated molding structure. A driving motor 5 and a feeding pipe 6 are fixed on the top of the crushing box 4, and a filter screen 7 is arranged in the crushing box 4. The material can fall onto the filter screen 7 through the feeding pipe 6. A connecting shaft 8 is fixed at one end of the output shaft of the driving motor 5. After installation, the connecting shaft 8 is located in the crushing box 4. A horizontal shaft 9 is installed on one side of the lower part of the connecting shaft 8 through a buffer assembly. A pressure roller 10 is rotatably installed on the horizontal shaft 9. After installation, the pressure roller 10 conflicts with the filter screen 7. Starting the driving motor 5 can drive the connecting shaft 8 to rotate, and then drive the horizontal shaft 9 and the pressure roller 10 to make a circular motion on the plane where the filter screen 7 is located. In this process, the pressure roller 10 also rotates around the horizontal shaft 9, so as to realize the crushing and dispersion of the block material on the filter screen 7. A feeding pipe 11 connected to the powder selection machine body 2 is arranged at the bottom of the crushing box 4. The material that meets the requirements after crushing can pass through the mesh of the filter screen 7, and finally enter the powder selection machine body 2 through the feeding pipe 11 for powder selection. The buffer assembly can be set to move the roller 10 upward to pass over the block when the roller 10 encounters a large resistance, and at the same time, the block is compressed and dispersed by the gravity of the roller 10, so as to avoid the block being too large and the roller 10 being unable to pass over and causing damage to the roller 10. Of course, when the size of the block is within the normal range (smaller than the distance between the roller 10 and the filter screen 7), the buffer assembly will not act.

[0024] Example 2

[0025] On the basis of Example 1, a cement grinding and powder selection device, in order to achieve upward buffering of the pressure roller 10, preferably, the buffer assembly includes a T-shaped mounting groove 12 arranged on one side of the lower part of the connecting shaft 8 and a limit block 13 located in the T-shaped mounting groove 12, the limit block 13 matches the T-shaped mounting groove 12, and a vertical buffer spring 14 is fixed between the limit block 13 and the T-shaped mounting groove 12, the horizontal shaft 9 is fixedly connected to the limit block 13, when the pressure roller 10 is subjected to an upward force, the buffer spring 14 shortens to move the pressure roller 10 upward, increasing the distance between the pressure roller 10 and the filter screen 7, thereby allowing the pressure roller 10 to smoothly pass over the block material while crushing the block material, and this cycle is repeated many times to completely crush the block material, and then it can automatically reset under the action of the buffer spring 14, of course, when the size of the block material is within the normal range (smaller than the distance between the pressure roller 10 and the filter screen 7), the buffer spring 14 will not be in a compressed state.

[0026] On the basis of Example 2, a cement grinding and powder selection device, in order to achieve the filtering effect of the filter screen 7, preferably, a vibrator 15 is also provided on the bottom side of the filter screen 7. In actual use, a cover body can be installed on the vibrator 15, and after installation, the filter screen 7 has a corresponding vibration space.

[0027] On the basis of Example 1, a cement grinding powder selection device is provided. In order to further crush the block material and improve the powder selection effect and efficiency, preferably, an arc-shaped grinding net 16 located below the filter net 7 is also provided in the crushing box 4, and the mesh of the arc-shaped grinding net 16 is smaller than the mesh of the filter net 7; correspondingly, the lower end of the connecting shaft 8 passes through the filter net 7 and is fixed with a grinding body 17 located in the arc-shaped grinding net 16. When the driving motor 5 is started, the grinding body 17 can also be driven to rotate, and the material falling into the arc-shaped grinding net 16 is ground again to make the material particle size smaller. After grinding, the material that meets the requirements passes through the mesh of the arc-shaped grinding net 16 and enters the powder selection machine body 2 through the discharge pipe 11.

[0028] In the present embodiment, a cement grinding powder selection device is provided. In order to achieve smooth material discharge, preferably, an inclined guide plate 18 is provided at the inner bottom of the crushing box 4, which is located below the arc-shaped grinding mesh 16 and corresponds to the discharge pipe 11. The fine materials that meet the requirements after grinding can all enter the powder selection machine body 2 through the discharge pipe 11 under the guidance of the inclined guide plate 18.

[0029] Based on any of the above embodiments, a cement grinding and powder selection device can have two feed pipes 6, and the two feed pipes 6 are arranged on both sides of the driving motor 5. Feeding through the two feed pipes 6 can improve the material crushing effect.

[0030] The utility model provides a cement mill powder selection device, comprising a powder selection machine body 2 supported and fixed by a support leg 1, a crushing box 4 is arranged on the top of the powder selection machine body 2 through a support plate 3, a driving motor 5 and a feed pipe 6 are fixed on the top of the crushing box 4, a filter screen 7 is arranged in the crushing box 4, when in use, the material can enter the filter screen 7 in the crushing box 4 through the feed pipe 6, a connecting shaft 8 located in the crushing box 4 is fixed at one end of the output shaft of the driving motor 5, a horizontal shaft 9 is installed on one side of the lower part of the connecting shaft 8 through a buffer assembly, and a pressure device 9 is rotatably installed on the horizontal shaft 9 to contact with the filter screen 7. The roller 10 is driven by the driving motor 5, and the connecting shaft 8 is driven to rotate through the horizontal shaft 9, and the roller 10 is driven to make a circular motion through the horizontal shaft 9. The roller 10 can rotate around the horizontal shaft 9 while moving, so as to realize the crushing and dispersing of the block materials on the filter screen 7. The setting of the buffer component can realize that when the block materials are large, the roller 10 is forced to move upward to pass over the block materials to crush them, so as to avoid the roller 10 from being damaged because it cannot pass over the block materials. The bottom of the crushing box 4 is provided with a discharge pipe 11 connected to the powder classifier body 2. After crushing, the fine materials that meet the requirements can pass through the filter screen 7 and the discharge pipe 11 to fall into the powder classifier body 2 for powder selection operation. In this way, the blockage of the cement powder classifier can be avoided, and the normal operation of the cement powder classifier and the powder selection efficiency can be improved.

[0031] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope of the present application is indicated by the claims.

[0032] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A cement grinding and separation device, characterized in that: include: A powder selector body (2) is supported and fixed by support legs (1), a crushing box (4) is arranged on the top of the powder selector body (2) through a support plate (3), a driving motor (5) and a feeding pipe (6) are fixed on the top of the crushing box (4), a filter screen (7) is arranged in the crushing box (4), a connecting shaft (8) located in the crushing box (4) is fixed at one end of the output shaft of the driving motor (5), a horizontal shaft (9) is installed on one side of the lower part of the connecting shaft (8) through a buffer assembly, a pressure roller (10) is rotatably installed on the horizontal shaft (9) and contacts the filter screen (7), and a feeding pipe (11) connected to the powder selector body (2) is arranged at the bottom of the crushing box (4).

2. The cement grinding and separation device according to claim 1, characterized in that: The buffer assembly comprises a T-shaped mounting groove (12) arranged on one side of the lower part of the connecting shaft (8) and a limit block (13) located in the T-shaped mounting groove (12) and matching with the T-shaped mounting groove (12); a buffer spring (14) in a vertical direction is fixed between the limit block (13) and the T-shaped mounting groove (12); and the horizontal shaft (9) is fixedly connected to the limit block (13).

3. The cement grinding and separation device according to claim 2, characterized in that: A vibrator (15) is also provided on the bottom side of the filter screen (7).

4. The cement grinding and separation device according to claim 1, characterized in that: The crushing box (4) is also provided with an arc-shaped grinding net (16) located below the filter net (7), and the mesh size of the arc-shaped grinding net (16) is smaller than the mesh size of the filter net (7); Correspondingly, the lower end of the connecting shaft (8) passes through the filter screen (7) and is fixed with a grinding body (17) located in the arc-shaped grinding screen (16).

5. The cement grinding and separation device according to claim 4, characterized in that: The inner bottom of the crushing box (4) is also provided with an inclined material guide plate (18) located below the arc-shaped grinding net (16) and corresponding to the material discharge pipe (11).

6. The cement grinding and separation device according to any one of claims 1 to 5, characterized in that: There are two feeding pipes (6), and the two feeding pipes (6) are arranged on both sides of the driving motor (5).

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