Roller press for producing cement

Abstract

The utility model discloses a roller press for producing cement, which relates to the field of cement production, and comprises a case, a pair of compression rollers is rotatably mounted in the case, a feed hopper is mounted at the top of the case, a discharge pipe is mounted at the bottom of the case, and the roller press further comprises a screening component; the screening assembly comprises a screening drum, the screening drum is fixedly installed in the position, below the pair of pressing rollers, of the machine box, a feeding opening is formed in the top of the screening drum, and a rotating plate is rotationally installed in the screening drum; the roller press comprises a machine box, a screen drum is arranged in the machine box, a discharging opening is formed in one side of the screen drum, a material returning box is fixedly installed on one side of the machine box, the machine box communicates with the material returning box through a discharging opening, and a discharging plate is installed in the machine box. The product quality is greatly reduced, and limestone particles which are not completely ground are difficult to grind again.

Description

Technical Field

[0001] This utility model relates to the field of cement production, specifically a roller press for cement production. Background Technology

[0002] Cement is a powdery hydraulic inorganic binder that forms a paste when mixed with water. It can harden in air or water and can firmly bind materials such as sand and stone together. Cement production requires a large amount of limestone as raw material. Because limestone has a large particle size and high hardness after mining, a roller press is needed to crush the limestone before cement production to ensure the quality of the cement produced.

[0003] However, existing cement roller presses do not have screening components, and the crushed limestone is collected directly. This results in incompletely crushed limestone particles being mixed into the limestone powder, which greatly reduces product quality and makes it difficult to crush the incompletely crushed limestone particles again. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a roller press for producing cement, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a roller press for producing cement, including a machine housing, a pair of pressure rollers rotatably installed inside the machine housing, a feed hopper installed on the top of the machine housing, a discharge pipe installed on the bottom of the machine housing, and a screening component;

[0006] The screening assembly includes a screen cylinder, which is fixedly installed in the housing below a pair of pressure rollers. The top of the screen cylinder has a feed inlet, and a rotating plate is rotatably installed inside the screen cylinder.

[0007] A discharge port is provided on one side of the screen cylinder, and a return box is fixedly installed on one side of the machine box. The machine box and the return box are connected through a discharge port. A discharge plate is installed inside the machine box. One end of the discharge plate is fixedly connected to the discharge port, and the other end is fixedly connected to the discharge port.

[0008] The recycling bin is equipped with a recycling assembly.

[0009] Preferably, the material return assembly includes a material transport box, a lifting plate is movably installed inside the material return box, one side of the bottom of the material transport box is hinged to the lifting plate, a movable block is fixedly installed at the other end of the material transport box, a groove is provided on the lifting plate, the movable block is movably installed in the groove, a spring is provided between the movable block and the groove, and a limiting rod for pressing down the material transport box is provided on the top of the material return box.

[0010] Preferably, a threaded rod is rotatably installed inside the return material box, and a first motor for driving the threaded rod to rotate is fixedly installed at the bottom of the return material box. One side of the lifting plate is screwed onto the threaded rod, and the lifting plate is slidably installed inside the return material box.

[0011] Preferably, the return material box and the top side wall of the machine box are both provided with interconnected return material ports.

[0012] Preferably, a pair of first guide plates are fixedly installed inside the housing above the pair of pressure rollers.

[0013] Preferably, a pair of second guide plates are fixedly installed inside the housing located below the pair of pressure rollers, and the bottom of the pair of second guide plates is fixedly connected to the feed inlet.

[0014] Beneficial effects

[0015] This utility model provides a roller press for cement production, which has the following advantages:

[0016] 1. The crushed limestone is screened by a screen cylinder. The fully crushed limestone falls to the bottom of the machine box after passing through the screen cylinder and can be discharged through the discharge pipe. Larger, incompletely crushed limestone particles remain in the screen cylinder, thus effectively preventing them from mixing with the fully crushed limestone powder and affecting product quality. The screen cylinder is equipped with a feed inlet, through which the crushed limestone can enter. The rotating plate moves the larger limestone particles remaining in the screen cylinder after screening. The screen cylinder is equipped with a discharge port and a discharge plate. When the larger limestone particles move to the discharge port under the action of the rotating plate, they can follow the discharge plate and enter the return box through the discharge port. The return assembly can transport the large limestone particles back to the top of the pair of crushing rollers for re-crushing, thus allowing the incompletely crushed limestone to be repeatedly crushed, further ensuring product quality.

[0017] 2. Large, incompletely crushed limestone particles flow along the feed plate into the conveyor box, which is equipped with a lifting plate. The lifting plate can lift the conveyor box up as well. With the installation of a limit rod, when the conveyor box rises to contact the limit rod, it continues to rise. The limit rod will exert downward pressure on the conveyor box. Under the pressure, the conveyor box tilts to the left. At this time, the limestone in the conveyor box can be fed into the machine box through the return port, and then fall again along the first guide plate between a pair of pressure rollers for further crushing. Attached Figure Description

[0018] Figure 1 This is a front view of the internal structure of this utility model;

[0019] Figure 2 for Figure 1 An enlarged diagram of A in the diagram.

[0020] In the diagram: 1. Chassis; 2. Pressure roller; 3. Screen cylinder; 4. Rotating plate; 5. Discharge port; 6. Return box; 7. Feeding plate; 8. Feeding port; 9. Lifting plate; 10. Transport box; 11. Groove; 12. Spring; 13. Movable block; 14. Threaded rod; 15. Limiting rod; 16. First motor; 17. Return port; 18. First guide plate; 19. Feed inlet; 20. Second guide plate. 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. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0022] Please see Figures 1-2 This utility model provides a technical solution: a roller press for producing cement, including a machine box 1, a pair of pressure rollers 2 rotatably installed inside the machine box 1, a feed hopper installed on the top of the machine box 1, a discharge pipe installed on the bottom of the machine box 1, and a screening component;

[0023] The screening assembly includes a screen cylinder 3, which is fixedly installed in a housing 1 below a pair of pressure rollers 2. The top of the screen cylinder 3 has a feed inlet 19, and a rotating plate 4 is rotatably installed inside the screen cylinder 3. A second motor that drives the rotating plate 4 to rotate is fixedly installed on the rear side wall of the housing 1.

[0024] A discharge port 5 is provided on one side of the screen cylinder 3, and a return box 6 is fixedly installed on one side of the machine box 1. The machine box 1 and the return box 6 are connected through the discharge port 8. A discharge plate 7 is installed inside the machine box 1. One end of the discharge plate 7 is fixedly connected to the discharge port 5, and the other end is fixedly connected to the discharge port 8.

[0025] The return material bin 6 is equipped with a return material assembly.

[0026] By installing a casing 1, limestone can be crushed within the casing 1. A pair of rotating pressure rollers 2 crush the limestone falling between them. A feed hopper allows the limestone to be crushed to be fed into the casing 1. A screen cylinder 3 screens the crushed limestone. Completely crushed limestone falls to the bottom of the casing 1 after passing through the screen cylinder 3 and is discharged through a discharge pipe. Large, incompletely crushed limestone particles remain in the screen cylinder 3, effectively preventing incompletely crushed limestone from mixing with the completely crushed limestone powder and affecting product quality. The system is equipped with a feed inlet 19, through which crushed limestone enters the screen cylinder 3. A rotating plate 4 is installed, which, when rotated, moves the larger limestone particles remaining in the screen cylinder 3 after screening. The system has a discharge port 8, a discharge outlet 5, and a discharge plate 7. When the larger limestone particles move to the discharge outlet 5 under the action of the rotating plate 4, they can follow the discharge plate 7 and pass through the discharge outlet 8 into the return box 6. With the installation of a return assembly, the large limestone particles can be transported back above the pair of crushing rollers for re-crushing. This allows for repeated crushing of incompletely crushed limestone, further ensuring product quality.

[0027] Furthermore, the return material assembly includes a material transport box 10, a lifting plate 9 is movably installed inside the material transport box 6, one side of the bottom of the material transport box 10 is hinged to the lifting plate 9, and a movable block 13 is fixedly installed at the other end of the material transport box 10. A groove 11 is provided on the lifting plate 9, and the movable block 13 is movably installed in the groove 11. A spring 12 is provided between the movable block 13 and the groove 11, and a limiting rod 15 for pressing down the material transport box 10 is provided on the top of the material transport box 6.

[0028] Large, incompletely crushed limestone particles, connected to a conveyor box 10, flow along the feed plate 7 into the conveyor box 10. A lifting plate 9 is installed, which, when raised, causes the conveyor box 10 to rise as well. A limit rod 15 is installed; when the conveyor box 10 rises to contact the limit rod 15, it continues to rise, and the limit rod 15 applies downward pressure to the conveyor box 10. Under this pressure, the conveyor box 10 tilts to the left. At this point, the limestone inside the conveyor box 10 can be fed into the machine casing 1 through the return port 17, and then fall again along the first guide plate 18 between a pair of pressure rollers 2 for further crushing.

[0029] Furthermore, a threaded rod 14 is rotatably installed inside the return box 6, and a first motor 16 for driving the threaded rod 14 to rotate is fixedly installed at the bottom of the return box 6. One side of the lifting plate 9 is screwed onto the threaded rod 14, and the lifting plate 9 is slidably installed inside the return box 6.

[0030] The first motor 16 is installed. When the first motor 16 is started, it drives the threaded rod 14 to rotate, which can drive the lifting plate 9 to rise and fall.

[0031] Furthermore, the return material box 6 and the top side wall of the machine box 1 are both provided with interconnected return material ports 17.

[0032] By providing a return port 17, it is convenient to send the limestone in the material box 10 back into the machine box 1 through the return port 17.

[0033] Furthermore, a pair of first guide plates 18 are fixedly installed inside the housing 1 above a pair of pressure rollers 2.

[0034] Limestone raw material entering the machine casing 1 can fall along the pair of first guide plates 18 to between a pair of pressure rollers 2.

[0035] Furthermore, a pair of second guide plates 20 are fixedly installed inside the housing 1 located below a pair of pressure rollers 2, and the bottom of the pair of second guide plates 20 is fixedly connected to the feed inlet 19.

[0036] With a pair of second guide plates 20 installed, the crushed limestone flows along the second guide plates 20 and enters the screen cylinder 3 through the feed inlet 19.

[0037] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0038] The working principle and usage process of this utility model are as follows: In use, the limestone to be crushed is fed into the machine casing 1 through the feed hopper, falling along a pair of first guide plates 18 between a pair of pressure rollers 2. Then, the third motor is started to drive the pair of pressure rollers 2 to rotate, thereby crushing the limestone. The crushed limestone enters the screen cylinder 3 through the feed inlet 19 for screening. The completely crushed limestone falls to the bottom of the machine casing 1 after passing through the screen cylinder 3 and can be discharged through the discharge pipe. Large, incompletely crushed limestone particles remain in the screen cylinder 3. The second motor is then started to drive... The rotating plate 4 rotates, thereby moving the limestone stored in the screen cylinder 3. When it moves to the discharge port 5, the limestone flows along the feeding plate 7 through the feeding port 8 into the conveying box 10. The first motor 16 is started to drive the threaded rod 14 to rotate, thereby driving the lifting plate 9 to rise, which in turn drives the conveying box 10 to rise until it continues to rise at the return port 17. The limiting rod 15 applies downward pressure to the conveying box 10, causing the conveying box 10 to tilt to the left, allowing the limestone in the conveying box 10 to re-enter the machine box 1 through the return port 17 for crushing.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller press for producing cement, comprising a housing (1), wherein a pair of pressure rollers (2) are rotatably mounted inside the housing (1), a feed hopper is installed on the top of the housing (1), and a discharge pipe is installed on the bottom of the housing (1), characterized in that, It also includes screening components; The screening assembly includes a screen cylinder (3), which is fixedly installed in the housing (1) below a pair of pressure rollers (2). The top of the screen cylinder (3) is provided with a feed inlet (19), and a rotating plate (4) is rotatably installed inside the screen cylinder (3). A discharge port (5) is provided on one side of the screen cylinder (3), and a return box (6) is fixedly installed on one side of the machine box (1). The machine box (1) and the return box (6) are connected through the discharge port (8). A discharge plate (7) is installed inside the machine box (1). One end of the discharge plate (7) is fixedly connected to the discharge port (5), and the other end is fixedly connected to the discharge port (8). The recycling bin (6) is equipped with a recycling assembly.

2. The roller press for producing cement according to claim 1, characterized in that, The return material assembly includes a material handling box (10), a lifting plate (9) is movably installed inside the material handling box (6), one side of the bottom of the material handling box (10) is hinged to the lifting plate (9), and a movable block (13) is fixedly installed at the other end of the material handling box (10). A groove (11) is provided on the lifting plate (9), and the movable block (13) is movably installed in the groove (11). A spring (12) is provided between the movable block (13) and the groove (11), and a limiting rod (15) for pressing down the material handling box (10) is provided on the top of the material handling box (6).

3. A roller press for producing cement according to claim 2, characterized in that, A threaded rod (14) is rotatably installed inside the return box (6). A first motor (16) for driving the threaded rod (14) to rotate is fixedly installed at the bottom of the return box (6). One side of the lifting plate (9) is screwed onto the threaded rod (14). The lifting plate (9) is slidably installed inside the return box (6).

4. A roller press for producing cement according to claim 1, characterized in that, The return material box (6) and the top side wall of the machine box (1) are both provided with interconnected return material ports (17).

5. A roller press for producing cement according to claim 1, characterized in that, A pair of first guide plates (18) are fixedly installed inside the housing (1) above the pair of pressure rollers (2).

6. A roller press for producing cement according to claim 1, characterized in that, A pair of second guide plates (20) are fixedly installed inside the housing (1) located below the pair of pressure rollers (2), and the bottom of the pair of second guide plates (20) is fixedly connected to the feed inlet (19).

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