Cement fineness negative pressure screen analysis equipment

Abstract

The utility model relates to the field of cement screen analysis, and discloses cement fineness negative pressure screen analysis equipment which comprises a frame body and a screw conveying pipe used for conveying cement ash, the frame body is communicated with the screw conveying pipe through an inlet, and the frame body produces negative pressure through an air compressor and extracts the cement ash at the output end of the screw conveying pipe. Efficient conveying of cement ash can be achieved through connection of the frame body and the screw conveying pipe, negative pressure is produced through the air compressor, the cement ash can be effectively extracted from the output end of the screw conveying pipe, the continuity and stability of the screen analysis process are ensured, the screen analysis efficiency is improved through the design, manual intervention is reduced, and the screening efficiency is improved. Meanwhile, due to the maintenance of the negative pressure in the frame body, the cement ash can be more uniformly distributed when entering the detection device, and conditions are provided for accurately detecting the fineness of the cement ash.

Description

Technical Field

[0001] The utility model relates to the field of cement screening, in particular to a negative pressure screening device for cement fineness. Background Art

[0002] Cement fineness negative pressure screening equipment is a special instrument used to detect cement fineness. Its background technology is mainly based on the demand for strict control of cement quality in the modern cement industry, as well as the continuous optimization and upgrading of cement fineness detection methods. With the rapid development of the cement industry, the requirements for cement quality are also increasing. Cement fineness, as one of the important indicators of cement quality, has a direct impact on the performance and use of cement.

[0003] The negative pressure screening equipment for cement fineness is designed and manufactured based on the negative pressure screening principle. Its working principle is to generate negative pressure through a vacuum cleaner to keep the screen seat in a certain negative pressure state. Under this state, the cement particles to be tested are in a fluid state under the action of the airflow ejected from the rotating air nozzle and move with the airflow. Among them, fine particles with a particle size smaller than the screen mesh aperture are driven by the airflow to pass through the screen and be collected, while coarse particles with a particle size larger than the screen mesh aperture remain in the screen, thereby achieving the purpose of screening; in actual applications, the distribution of cement particles is often uneven. When the particles are unevenly distributed, the particle density and fluidity on the screen will be affected, thereby affecting the efficiency and accuracy of screening. For example, if the particles on the screen are too densely stacked, the screening resistance will increase and the screening efficiency will be reduced; and if the particle fluidity is poor, the screening will be incomplete, affecting the test results. Utility Model Content

[0004] The utility model provides a cement fineness negative pressure screening device, which overcomes the shortcomings described in the background technology.

[0005] The technical solution adopted by the utility model to solve its technical problem is:

[0006] A negative pressure screening device for cement fineness, comprising a frame and a screw conveying pipe for conveying cement ash, wherein the frame is connected to the screw conveying pipe through an inlet, and the frame creates negative pressure through an air compressor and extracts cement ash from an output end of the screw conveying pipe;

[0007] A detection device for detecting the fineness of cement ash is provided inside, and the inlet and the air compressor are both connected to the detection device. When there is negative pressure inside the frame, the cement ash enters the detection device through the inlet;

[0008] Two filter screens are arranged between the inlet and the screw conveying pipe. All the filter screens are fixed on the output shaft of a motor through the same fixing part. During operation, the filter screens overlap with the inlet.

[0009] A preferred technical solution: The outer diameter of the filter is larger than the outer diameter of the inlet. When the filter is adjusted by the motor and rotated to the same axis as the inlet, the filter covers all surfaces of the inlet port.

[0010] A preferred technical solution: A plurality of rubber protrusions are regularly distributed on the surface of the frame near the motor, and the rubber protrusions are arranged equidistantly from the edge of the frame to the motor. The rubber protrusions protrude from the surface of the frame, and when the filter passes through the rubber protrusions, it will abut against the rubber protrusions.

[0011] Compared with the prior art, this technical solution has the following advantages:

[0012] In the present invention, efficient transmission of cement ash can be achieved through the connection between the frame and the screw conveying pipe. By using an air compressor to create negative pressure, cement ash can be effectively extracted from the output end of the screw conveying pipe, ensuring the continuity and stability of the screening process. This design not only improves the screening efficiency, but also reduces manual intervention and labor intensity. At the same time, due to the maintenance of negative pressure in the frame, the cement ash can be more evenly distributed when entering the detection device, providing conditions for accurately detecting the fineness of cement ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the filter and rubber bumps.

[0016] In the figure: frame 1, inlet 11, detection device 12, air compressor 13, motor 14, filter 141;

[0017] Screw conveying pipe 2, drop bucket 21;

[0018] Rubber Bump 101. DETAILED DESCRIPTION

[0019] A negative pressure screening device for cement fineness comprises a frame 1 and a screw conveying pipe 2 for conveying cement ash. The frame 1 is connected to the screw conveying pipe 2 through an inlet 11. The frame 1 creates negative pressure through an air compressor 13 and extracts cement ash from the output end of the screw conveying pipe 2. The design of the negative pressure screening device for cement fineness realizes efficient transmission of cement ash through the connection between the frame 1 and the screw conveying pipe 2. The negative pressure created by the air compressor 13 can effectively extract cement ash from the output end of the screw conveying pipe 2, thereby ensuring the continuity and stability of the screening process. This design not only improves the screening efficiency, but also reduces manual intervention and labor intensity. At the same time, due to the maintenance of negative pressure in the frame 1, the cement ash can be more evenly distributed when entering the detection device 12, thereby providing conditions for accurately detecting the fineness of cement ash.

[0020] The setting of the detection device 12 enables the equipment to monitor the fineness of cement ash in real time, which is of great significance for controlling the quality of cement. The connection between the inlet 11, the air compressor 13 and the detection device 12 ensures that the cement ash smoothly enters the detection device 12 under the action of negative pressure, thereby realizing the accurate measurement of the fineness of cement ash. This automated detection method greatly improves the accuracy and repeatability of the detection, helps to timely discover and adjust problems in the production process, and ensures the quality of cement products. The frame 1 is provided with a detection device 12 for detecting the fineness of cement ash. The inlet 11 and the air compressor 13 are both connected to the detection device 12. When there is negative pressure in the frame 1, the cement ash enters the detection device 12 through the inlet 11; two filters 141 are provided between the inlet 11 and the screw conveying pipe 2, and all the filters 141 are fixed to the output shaft of a motor 14 through the same fixing member. During operation, the filter 141 overlaps with the inlet 11;

[0021] The design and application of the filter 141 provide an additional filtering level for the screening process. The outer diameter of the filter 141 is larger than the outer diameter of the inlet 11, so that the filter can completely cover all surfaces of the inlet 11 when adjusting the rotation, thereby ensuring that the cement ash is fully filtered before entering the detection device and preventing the mixing of oversized particles. This design not only realizes automatic control, but also through the precise adjustment of the motor 14, the filter 141 can be accurately aligned with the inlet 11, ensuring the stability and consistency of the screening process. In addition, the rotation of the filter driven by the motor also facilitates the maintenance and cleaning of the equipment.

[0022] Moreover, the outer diameter of the filter 141 is larger than the outer diameter of the inlet 11. When the filter 141 is adjusted and rotated to the same axis as the inlet 11 by the motor 14, the filter 141 covers all surfaces of the inlet 11. At the same time, a plurality of rubber convex points 101 are regularly distributed on the surface of the frame 1 near the motor 14. The rubber convex points 101 are arranged equidistantly from the edge of the frame 1 to the motor 14. The rubber convex points 101 protrude from the surface of the frame 1. When the filter 141 passes through the rubber convex points 101, it will abut against the rubber convex points 101.

[0023] The design of the rubber bump 101 is innovative. Its main function is to generate vibration when the filter 141 passes by, helping to shake off the lumps of cement dust stuck on the filter. This is mainly to ensure continuity and uniformity during the practice. Since the rubber bump 101 has good elasticity and wear resistance, it can maintain its shape and function during long-term vibration, while reducing the wear on the filter 141 and extending the service life of the filter 141.

[0024] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A negative pressure screening device for cement fineness, characterized in that: The invention comprises a frame (1) and a screw conveying pipe (2) for conveying cement ash. The frame (1) is connected to the screw conveying pipe (2) through an inlet (11). The frame (1) creates negative pressure through an air compressor (13) and extracts cement ash from the output end of the screw conveying pipe (2). A detection device (12) for detecting the fineness of cement ash is provided therein, and the inlet (11) and the air compressor (13) are both connected to the detection device (12). When the frame (1) is under negative pressure, the cement ash enters the detection device (12) through the inlet (11); Two filter screens (141) are provided between the inlet (11) and the screw conveying pipe (2). All the filter screens (141) are fixed to an output shaft of a motor (14) via a same fixing member. During operation, the filter screens (141) overlap with the inlet (11).

2. A cement fineness negative pressure screening device according to claim 1, characterized in that: The outer diameter of the filter screen (141) is greater than the outer diameter of the inlet (11). When the filter screen (141) is adjusted by the motor (14) and rotated to have the same axis as the inlet (11), the filter screen (141) covers all surfaces of the inlet (11).

3. A cement fineness negative pressure screening device according to claim 2, characterized in that: A plurality of rubber protrusions (101) are regularly distributed on the surface of the frame (1) near the motor (14); the rubber protrusions (101) are arranged at equal distances from the edge of the frame (1) to the motor (14); the rubber protrusions (101) protrude from the surface of the frame (1); and when the filter (141) passes through the rubber protrusions (101), it will abut against the rubber protrusions (101).

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