Secondary rolling and crushing equipment for cement production

Abstract

The utility model discloses secondary rolling and crushing equipment for cement production, which comprises a box body, a crushing cavity is arranged in the box body, a plurality of first crushing teeth are uniformly arranged on the inner wall of the crushing cavity, first rotating shafts are symmetrically arranged in the crushing cavity, and one end of each first rotating shaft penetrates through the side wall of the box body and is provided with a second motor. A crushing roller is arranged on the first rotating shaft, a plurality of second crushing teeth are evenly arranged on the surface of the crushing roller, a grinding cavity is formed in the position, below the crushing cavity, in the box body, a second rotating shaft is rotationally arranged on the surface of the bottom in the box body, and one end of the second rotating shaft penetrates through the surface of the bottom of the box body and is provided with a first motor; the cement raw material crushing device has the advantages that cement raw materials can be crushed for multiple times, the crushing effect is better, the screen can be cleaned, and the situation that the production efficiency is affected due to the fact that the screen is blocked is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and more specifically, to a secondary crushing and grinding equipment for cement production. Background Technology

[0002] Cement grinding process: Grinding systems can be divided into open-flow systems and closed-flow systems according to different grinding methods. In the grinding process, the material passes through the mill once and becomes the finished product, which is called open-flow. When the material exits the mill, it is sorted, and the fine particles are used as the finished product, while the coarse particles are returned to the mill for further grinding, which is called closed-flow. The advantages of open-flow systems are: simple process, fewer equipment, lower investment, and easy operation. Its disadvantages are: low crushing efficiency and high unit power consumption. The advantages of closed-flow systems are: it can greatly reduce over-grinding, increase mill output, reduce power consumption, and produce uniform product particle size. The fineness of the finished product can be changed by adjusting the parameters of the grading equipment. Its disadvantages are: complex process, larger investment, and existing cement grinding equipment has a single function, cannot grind cement uniformly, has poor grinding effect, and low grinding precision.

[0003] The existing public technology, CN210700355U, discloses a roller press for producing cement, including a support plate. Four support columns are symmetrically fixedly installed at the bottom of the support plate, and two side plates are symmetrically installed at the top. Two inclined baffles are movably inserted and snapped onto the inner walls of the two side plates. A pressure roller is rotatably installed between the two side plates and their inner walls. A motor fixing plate is fixedly installed on the outer wall of one of the side plates, and a motor is fixedly installed at the top of the motor fixing plate. The motor output end, near the pressure roller, passes through the corresponding side plate and is fixedly connected to one end of the pressure roller. A screen is placed at the top of the support plate. This roller press for producing cement uses an insert-and-click installation method to install the inclined baffles between the inner walls of the side plates, facilitating disassembly and effectively improving cleaning convenience. The screen also prevents fine particles from mixing into limestone powder, greatly improving the quality of the produced product.

[0004] While the aforementioned patent can prevent fine particles from mixing into limestone powder and greatly improve the quality of the produced products, it still has some shortcomings in its use. First, the patent only uses a grinding roller to crush the cement raw materials, which is not effective enough. Second, although the patent uses a screen to screen the crushed cement raw materials, it lacks a structure for cleaning the screen. The accumulation of cement raw materials on the screen can easily lead to screen blockage, affecting production efficiency. Currently, no effective solutions have been proposed to address the problems in the relevant technology. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a secondary crushing and grinding equipment for cement production. It has the advantages of being able to crush cement raw materials multiple times, resulting in better crushing effect, and being able to clean the screen to avoid screen blockage affecting production efficiency, thereby solving the problems mentioned in the background technology.

[0007] (II) Technical Solution

[0008] To achieve the above advantages, the specific technical solution adopted by this utility model is as follows:

[0009] A secondary crushing and grinding equipment for cement production includes a housing, a crushing chamber inside the housing, a plurality of first crushing teeth evenly arranged on the inner wall of the crushing chamber, a first rotating shaft symmetrically arranged inside the crushing chamber, a second motor mounted on one end of the first rotating shaft penetrating the side wall of the housing, a crushing roller mounted on the first rotating shaft, a plurality of second crushing teeth evenly arranged on the surface of the crushing roller, a grinding chamber located below the crushing chamber inside the housing, a second rotating shaft rotatably mounted on the bottom surface of the housing, a first motor mounted on one end of the second rotating shaft penetrating the bottom surface of the housing, and a grinding block mounted on the end of the second rotating shaft located inside the grinding chamber.

[0010] Furthermore, a screen is provided below the grinding chamber inside the box, the second rotating shaft passes through and is rotatably connected to the screen, and brush plates are symmetrically arranged on the second rotating shaft above the screen. The bottom surface of the brush plate is attached to the top surface of the screen and a cleaning brush is provided.

[0011] Furthermore, a feeding hopper is provided on the top surface of the box, a fixed cylinder is provided on the top surface of the feeding hopper, a feeding port is provided on the top surface of the fixed cylinder, a third rotating shaft is rotatably provided inside the fixed cylinder, a third motor is provided at one end of the third rotating shaft through the side wall of the fixed cylinder, an installation cylinder is provided on the third rotating shaft, and several material feeding plates are evenly provided on the surface of the installation cylinder close to the inner wall of the fixed cylinder.

[0012] Furthermore, a guide plate is inclinedly arranged on the bottom surface of the box, and a discharge port is provided on one side of the side wall of the box located on the guide plate, and a valve is provided on the discharge port.

[0013] Furthermore, a control panel is provided on the side wall of the enclosure.

[0014] Furthermore, the bottom surface of the box is provided with support legs, and multiple support legs are provided and the multiple support legs are evenly distributed at the four corners of the bottom surface of the box.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a secondary crushing and grinding equipment for cement production, which has the following beneficial effects:

[0017] (1) This utility model adopts a structure of crushing chamber, grinding chamber, crushing roller and grinding block. When it is necessary to crush cement raw materials, the second motor is started to drive the crushing roller to rotate. The crushing roller can perform preliminary crushing of the cement raw materials entering the box. The cement raw materials after preliminary crushing will fall into the grinding chamber. The first motor is started to drive the first rotating shaft to rotate, which in turn drives the grinding block to rotate. The grinding block can further crush the cement raw materials entering the grinding chamber, thus improving the crushing effect of cement raw materials.

[0018] (2) This utility model adopts a structure of brush plate and cleaning brush. The first rotating shaft drives the brush plate to rotate, which in turn drives the cleaning brush to rotate. The cleaning brush can continuously clean the screen surface, avoiding the cement raw material from clogging the screen and affecting the cement production efficiency. By adopting a structure of installation cylinder, fixing cylinder and feeding plate, the third motor is started to rotate, which drives the third rotating shaft to rotate, which in turn drives the installation cylinder to rotate. The rotation of the installation cylinder drives the feeding plate to rotate, which can control the feeding speed of cement raw material and avoid feeding too much material at one time, which will affect the crushing effect of cement raw material. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of a secondary crushing and grinding equipment for cement production proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of a secondary crushing and grinding equipment for cement production proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the material feeding plate proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the screen and brush plate proposed in this utility model.

[0024] In the picture:

[0025] 1. Housing; 2. Guide plate; 3. Second rotating shaft; 4. Screen; 5. Brush plate; 6. Grinding chamber; 7. Control panel; 8. Crushing chamber; 9. First crushing tooth; 10. Second crushing tooth; 11. Fixing cylinder; 12. Mounting cylinder; 13. Third rotating shaft; 14. Feeding plate; 15. Feed inlet; 16. Feed hopper; 17. First rotating shaft; 18. Grinding block; 19. Cleaning brush; 20. Discharge port; 21. Support leg; 22. First motor; 23. Third motor; 24. Second motor; 25. Crushing roller. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a secondary crushing and grinding equipment for cement production is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, a secondary crushing and grinding device for cement production according to an embodiment of the present invention includes a housing 1, a crushing chamber 8 is provided inside the housing 1, a plurality of first crushing teeth 9 are evenly arranged on the inner wall of the crushing chamber 8, a first rotating shaft 17 is symmetrically arranged inside the crushing chamber 8, a second motor 24 is provided through the side wall of the housing 1 at one end of the first rotating shaft 17, a crushing roller 25 is provided on the first rotating shaft 17, a plurality of second crushing teeth 10 are evenly arranged on the surface of the crushing roller 25, a grinding chamber 6 is provided inside the housing 1 below the crushing chamber 8, a second rotating shaft 3 is rotatably arranged on the bottom surface of the housing 1, and a first motor is provided through the bottom surface of the housing 1 at one end of the second rotating shaft 3. 22. The end of the second rotating shaft 3 is located in the grinding chamber 6 and a grinding block 18 is provided. The function of the crushing roller 25 and the grinding block 18 is that when it is necessary to crush the cement raw materials, the second motor 24 is started to rotate and drive the crushing roller 25 to rotate. The rotation of the crushing roller 25 can perform preliminary crushing of the cement raw materials entering the box 1. The cement raw materials after preliminary crushing will fall into the grinding chamber 6. The first motor 22 is started to rotate and drive the first rotating shaft 17 to rotate, which in turn drives the grinding block 18 to rotate. The rotation of the grinding block 18 can further crush the cement raw materials entering the grinding chamber 6, thereby improving the crushing effect of the cement raw materials.

[0029] In one embodiment, a screen 4 is provided inside the housing 1 below the grinding chamber 6. A second rotating shaft 3 passes through and is rotatably connected to the screen 4. A brush plate 5 is symmetrically arranged on the second rotating shaft 3 above the screen 4. A cleaning brush 19 is provided on the bottom surface of the brush plate 5 and attached to the top surface of the screen 4. The function of the cleaning brush 19 is to rotate the brush plate 5 by rotating the first rotating shaft 17, thereby rotating the cleaning brush 19. The cleaning brush 19 can continuously clean the surface of the screen 4 to prevent cement raw materials from clogging the screen 4.

[0030] In one embodiment, a feeding hopper 16 is provided on the top surface of the housing 1, a fixed cylinder 11 is provided on the top surface of the feeding hopper 16, a feeding port 15 is provided on the top surface of the fixed cylinder 11, a third rotating shaft 13 is rotatably provided inside the fixed cylinder 11, a third motor 23 is provided through the side wall of the fixed cylinder 11 at one end of the third rotating shaft 13, an installation cylinder 12 is provided on the third rotating shaft 13, and a plurality of material feeding plates 14 are evenly provided on the surface of the installation cylinder 12 close to the inner wall of the fixed cylinder 11. The function of the material feeding plates 14 is to drive the third rotating shaft 13 to rotate by starting the third motor 23, thereby driving the installation cylinder 12 to rotate. By driving the material feeding plates 14 to rotate by the rotation of the installation cylinder 12, the feeding speed of cement raw materials can be controlled, so as to avoid excessive feeding at one time, which would affect the crushing effect of cement raw materials.

[0031] In one embodiment, a guide plate 2 is inclinedly arranged on the bottom surface of the box 1, and a discharge port 20 is arranged on the side wall of the box 1 on one side of the guide plate 2. A valve is provided on the discharge port 20, and the function of the discharge port 20 is to facilitate the removal of the crushed cement raw materials.

[0032] In one embodiment, a control panel 7 is provided on the side wall of the housing 1. The control circuit of the control panel 7 can be implemented by simple programming by those skilled in the art, which is common knowledge in the art. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0033] In one embodiment, a support leg 21 is provided on the bottom surface of the box 1. Multiple support legs 21 are provided and are evenly distributed at the four corners of the bottom surface of the box 1. The function of the support leg 21 is to provide a certain support for the bottom surface of the box 1.

[0034] Working principle: In use, cement raw materials are first fed into the fixed cylinder 11 through the feed inlet 15. The third motor 23 is started, rotating the third shaft 13, which in turn rotates the mounting cylinder 12. The rotation of the mounting cylinder 12, in turn, rotates the feeding plate 14, controlling the feeding speed of the cement raw materials and preventing excessive feeding at once from affecting the crushing effect. When further crushing is required, the second motor 24 is started, rotating the crushing roller 25. The rotation of the crushing roller 25 provides initial crushing of the cement raw materials entering the housing 1. The pulverized cement raw material falls into the grinding chamber 6. The first motor 22 is started to rotate, which drives the first rotating shaft 17 to rotate, which in turn drives the grinding block 18 to rotate. The rotation of the grinding block 18 can further pulverize the cement raw material entering the grinding chamber 6, improving the pulverization effect of the cement raw material. The cement raw material after secondary pulverization falls onto the screen 4 for screening. The rotation of the first rotating shaft 17 drives the brush plate 5 to rotate, which in turn drives the cleaning brush 19 to rotate. The cleaning brush 19 can continuously clean the surface of the screen 4 to prevent the cement raw material from clogging the screen 4.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A secondary crushing and grinding equipment for cement production, comprising a housing (1), characterized in that, The box (1) is provided with a crushing chamber (8). The inner wall of the crushing chamber (8) is uniformly provided with a plurality of first crushing teeth (9). The crushing chamber (8) is symmetrically provided with a first rotating shaft (17). One end of the first rotating shaft (17) passes through the side wall of the box (1) and is provided with a second motor (24). The first rotating shaft (17) is provided with a crushing roller (25). The surface of the crushing roller (25) is uniformly provided with a plurality of second crushing teeth (10). The box (1) is provided with a grinding chamber (6) located below the crushing chamber (8). The bottom surface of the box (1) is rotatably provided with a second rotating shaft (3). One end of the second rotating shaft (3) passes through the bottom surface of the box (1) and is provided with a first motor (22). The end of the second rotating shaft (3) is located in the grinding chamber (6) and is provided with a grinding block (18).

2. The secondary crushing and grinding equipment for cement production according to claim 1, characterized in that, A screen (4) is provided inside the box (1) below the grinding chamber (6). The second rotating shaft (3) passes through and is rotatably connected to the screen (4). A brush plate (5) is symmetrically arranged on the second rotating shaft (3) above the screen (4). A cleaning brush (19) is provided on the bottom surface of the brush plate (5) in contact with the top surface of the screen (4).

3. The secondary crushing and grinding equipment for cement production according to claim 1, characterized in that, The top surface of the box (1) is provided with a feeding hopper (16), the top surface of the feeding hopper (16) is provided with a fixed cylinder (11), the top surface of the fixed cylinder (11) is provided with a feeding port (15), a third rotating shaft (13) is rotatably provided inside the fixed cylinder (11), one end of the third rotating shaft (13) passes through the side wall of the fixed cylinder (11) and a third motor (23) is provided, an mounting cylinder (12) is provided on the third rotating shaft (13), and a number of material feeding plates (14) are evenly provided on the surface of the mounting cylinder (12) close to the inner wall of the fixed cylinder (11).

4. The secondary crushing and grinding equipment for cement production according to claim 1, characterized in that, The bottom surface of the box (1) is inclined with a guide plate (2), and the side wall of the box (1) is provided with a discharge port (20) on one side of the guide plate (2), and a valve is provided on the discharge port (20).

5. The secondary crushing and grinding equipment for cement production according to claim 1, characterized in that, The control panel (7) is provided on the side wall of the enclosure (1).

6. The secondary crushing and grinding equipment for cement production according to claim 1, characterized in that, The bottom surface of the box (1) is provided with support legs (21), and multiple support legs (21) are provided and the multiple support legs (21) are evenly distributed at the four corners of the bottom surface of the box (1).

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