Cement grinding device with screening structure

Abstract

The cement grinding device with the screening structure comprises a box body, a grinding assembly and a screening assembly, two vibration motors are symmetrically installed on the left side of the surface of the outer side of the box body, a feeding port and the grinding assembly are installed on the surface of the upper side of the box body, and elastic supporting legs are installed on the surface of the lower side of the box body. A screening assembly is installed on the surface of the outer side of the box body, a first screen mesh and a second screen mesh are installed in the box body, and a discharging assembly is installed in the box body. According to the cement raw material screening device, the angle and position of the screening baffle can be rapidly and flexibly adjusted, materials are more effectively layered and screened in the screening box, and therefore the screening efficiency is remarkably improved, cement raw materials can be fully ground through the box body and the grinding roller assembly in the box body, and a good foundation is provided for follow-up screening.

Description

Technical Field

[0001] The utility model belongs to the field of grinding equipment, and particularly relates to a cement grinding device with a screening structure. Background Technique

[0002] A cement grinding device is a device used to grind cement clinker and other cement admixtures into fine powder. The current cement grinding device has many disadvantages without a screening structure. First of all, due to the lack of a screening structure, the particle size distribution of the ground cement particles is uneven, with large particles and small particles mixed, resulting in unstable product quality. The conventional countermeasure is to increase the grinding time or improve the grinding intensity, but this will lead to a significant increase in energy consumption. At the same time, over-grinding may cause the material to agglomerate, which will instead reduce the grinding efficiency. Secondly, the lack of a screening structure makes it impossible to separate the materials that do not meet the particle size requirements in a timely manner, thus affecting the progress of subsequent processes and reducing the overall production efficiency. The reason for this is the lack of an effective separation mechanism. To solve this problem, manual sampling inspection is often used, but this method is not only time-consuming and laborious, but also the representativeness of sampling is limited, and it is difficult to comprehensively and accurately reflect the product quality;

[0003] Since there is no screening structure in the actual use of the cement grinding device, the particle size distribution of the ground cement finished product is disorderly. Some particles may be too large, affecting the hydration reaction and strength development of the cement. This is because of the lack of a screening structure. And the lack of a screening structure will not only cause the above problems, but also may be too small, not only causing waste of energy, but also may cause problems such as excessive shrinkage during the use of the cement. Therefore, a new structure needs to be proposed to solve the above technical problems. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a cement grinding device with a screening structure to solve the problems put forward in the above background technique.

[0005] The present utility model is realized through the following technical solutions: A cement grinding device with a screening structure, comprising: a box body, a grinding assembly, and a screening assembly. Two vibration motors are symmetrically installed on the left side of the outer surface of the box body. The upper surface of the box body is provided with a feed inlet and a grinding assembly. The lower surface of the box body is provided with elastic support legs. The screening assembly is installed on the outer surface of the box body. A first screen and a second screen are installed inside the box body. An outlet assembly is installed inside the box body. The outlet assembly includes: an outlet baffle, an outlet pipe, an outlet cylinder, and an auger member. The lower surface of the outlet baffle is provided with an outlet pipe, and the outlet pipe is connected to the outlet cylinder. An auger member is installed inside the outlet cylinder. The grinding assembly includes: a motor, a rotating shaft, and a grinding roller assembly. The output shaft of the motor is installed with a rotating shaft through a coupling. The outer surface of the rotating shaft is installed with a grinding roller assembly through a mounting rod. The screening assembly includes: a screening box and a screening baffle. The screening box is installed on the outer surface of the box body. The screening baffle is hinged inside the screening box through an electric push rod.

[0006] As a preferred embodiment, an elastic support leg is respectively installed at each of the four corners of the lower surface of the box body. Two feed inlets are symmetrically installed on the upper surface of the box body. The motor is installed at the center position of the upper surface of the box body. The output shaft of the motor penetrates through the upper surface of the box body. The rotating shaft is rotatably arranged inside the box body through the motor.

[0007] As a preferred embodiment, the grinding roller assembly includes: a mounting plate, a grinding roller body, and a scraper. The mounting plate has a U-shaped structure. The left inner wall and the right inner wall inside the mounting plate are rotatably installed with a grinding roller body. The upper surface inside the mounting plate is provided with a scraper. The side surface of the scraper away from the mounting plate abuts against the outer surface of the grinding roller body.

[0008] As a preferred embodiment, four grinding roller assemblies are symmetrically installed on the outer surface of the rotating shaft through two mounting rods respectively. A first screen is installed below the upper two grinding roller assemblies, and a second screen is installed below the lower two grinding roller assemblies. The diameter of the mesh holes of the first screen is larger than the diameter of the mesh holes of the second screen. The outlet baffle is installed below the second screen. When in use, the grinding roller assembly inside the box body can fully grind the cement raw materials, providing a good foundation for subsequent screening. At the same time, the two vibration motors symmetrically installed on the left side of the outer surface can drive the box body to vibrate, enabling the materials to be better dispersed and flow inside the box body, improving the screening effect of the first screen and the second screen.

[0009] As a preferred embodiment, a discharge pipe is installed at the center position of the lower side surface of the discharge baffle. One end of the discharge pipe away from the discharge baffle is connected to the upper side of the outer surface of the discharge cylinder. A screw conveyor is rotatably installed inside the discharge cylinder by a motor. The lower side right edge of the outer surface of the discharge cylinder is designed to be open.

[0010] As a preferred embodiment, a blanking plate is installed obliquely at an angle of 25 degrees with the left side higher than the right side below the first sieve. The right end of the blanking plate penetrates through the right side surface of the box body and is designed to be open. The right end of the blanking plate is arranged inside the screening box. A screening baffle is hinged to the right inner wall of the screening box. An electric push rod is hinged between the lower side surface of the screening baffle and the right inner wall of the screening box. A discharge pipe is installed on the lower side surface of the screening box. When in use, by hinging the screening baffle with the electric push rod, the angle and position of the screening baffle can be quickly and flexibly adjusted, enabling the materials to be more effectively stratified and screened inside the screening box, thereby significantly improving the screening efficiency.

[0011] As a preferred embodiment, a through hole is provided on the right side surface of the box body, and the left end of the through hole abuts against the screening baffle.

[0012] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows: By providing a screening assembly, the screening assembly includes a screening box and a screening baffle. The screening box is installed on the outer surface of the box body, and the screening baffle is hinged inside the screening box by an electric push rod. When in use, by hinging the screening baffle with the electric push rod, the angle of the screening baffle can be quickly and flexibly adjusted, enabling the materials to be more effectively stratified and screened inside the screening box, thereby significantly improving the screening efficiency.

[0013] By providing a box body, two vibration motors are symmetrically installed on the left side of the outer surface of the box body. A feed inlet and a grinding assembly are installed on the upper side surface of the box body. Elastic support legs are installed on the lower side surface of the box body. A screening assembly is installed on the outer surface of the box body. A first sieve and a second sieve are installed inside the box body. A discharge assembly is installed inside the box body. The discharge assembly includes a discharge baffle, a discharge pipe, a discharge cylinder, and a screw conveyor. When in use, the grinding roller assembly inside the box body can fully grind the cement raw materials, providing a good foundation for subsequent screening. At the same time, the two vibration motors symmetrically installed on the left side of the outer surface can drive the box body to vibrate, enabling the materials to be better dispersed and flow inside the box body, improving the screening effect of the first sieve and the second sieve. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of a cement grinding device with a screening structure according to the present invention.

[0016] Figure 2 It is a schematic diagram of the grinding roller assembly of a cement grinding device with a screening structure according to the present invention.

[0017] Figure 3 It is a schematic diagram of the screening assembly of a cement grinding device with a screening structure according to the present invention.

[0018] In the figure, 100 - box body, 110 - elastic support legs, 130 - feed inlet, 140 - vibration motor;

[0019] 200 - motor, 210 - rotating shaft, 220 - grinding roller assembly, 221 - mounting part, 222 - mounting rod, 223 - grinding roller body, 224 - scraper, 230 - first sieve, 240 - second sieve, 250 - blanking plate;

[0020] 300 - screening assembly, 310 - screening box, 320 - discharge pipe, 330 - electric push rod, 340 - screening baffle; 400 - discharge baffle, 410 - discharge cylinder, 420 - auger part. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1 to 3, the present utility model provides a technical solution: a cement grinding device with a screening structure, including: a box body 100, a grinding assembly, and a screening assembly 300. On the left side of the outer surface of the box body 100, two vibration motors 140 are symmetrically installed. On the upper surface of the box body 100, a feed inlet 130 and a grinding assembly are installed. On the lower surface of the box body 100, elastic support legs 110 are installed. On the outer surface of the box body 100, a screening assembly 300 is installed. Inside the box body 100, a first screen 230 and a second screen 240 are installed. Inside the box body 100, a discharge assembly is installed. The discharge assembly includes: a discharge baffle 400, a discharge pipe, a discharge cylinder 410, and a screw conveyor member 420. On the lower surface of the discharge baffle 400, a discharge pipe is installed. The discharge pipe is connected to the discharge cylinder 410. Inside the discharge cylinder 410, a screw conveyor member 420 is installed. The grinding assembly includes: a motor 200, a rotating shaft 210, and a grinding roller assembly 220. The output shaft of the motor 200 is installed with the rotating shaft 210 through a coupling. On the outer surface of the rotating shaft 210, a grinding roller assembly 220 is installed through a mounting rod 222. The screening assembly 300 includes: a screening box 310 and a screening baffle 340. On the outer surface of the box body 100, a screening box 310 is installed. Inside the screening box 310, a screening baffle 340 is hinged through an electric push rod 330.

[0023] Please refer to Figures 1 to 3 , as the first embodiment of the present utility model: at the four corners of the lower surface of the box body 100, an elastic support leg 110 is respectively installed. On the upper surface of the box body 100, two feed inlets 130 are symmetrically installed. At the central position of the upper surface of the box body 100, a motor 200 is installed. The output shaft of the motor 200 penetrates through the upper surface of the box body 100. The rotating shaft 210 is rotationally arranged inside the box body 100 through the motor 200;

[0024] The grinding roller assembly 220 includes: a mounting plate 221, a grinding roller body 223, and a scraper 224. The mounting plate 221 has a U-shaped structure. The left inner wall and the right inner wall inside the mounting plate 221 are rotationally installed with the grinding roller body 223. On the upper surface inside the mounting plate 221, a scraper 224 is installed. The side surface of the scraper 224 away from the mounting plate 221 abuts against the outer surface of the grinding roller body 223;

[0025] On the outer surface of the rotating shaft 210, four grinding roller assemblies 220 are symmetrically installed through two mounting rods 222 respectively. A first screen 230 is installed below the upper two grinding roller assemblies 220. A second screen 240 is installed below the lower two grinding roller assemblies 220. The diameter of the mesh holes of the first screen 230 is larger than the diameter of the mesh holes of the second screen 240. Below the second screen 240, a discharge baffle 400 is installed;

[0026] During use, the user first puts the pre-treated small cement blocks into the interior of the box body 100 through the feed inlet 130. At this time, the small cement blocks will fall onto the upper surface of the first sieve 230. At this time, the user can start the motor 200, so that the output shaft of the motor 200 drives the rotating shaft 210 to rotate, thereby driving the mounting plate 221 and the grinding roller body 223 to rotate and grind on the upper surface of the first sieve 230. At this time, the small cement blocks on the upper surface of the first sieve 230 are ground by the grinding roller body 223. At this time, the cement powder ground to a diameter suitable for the mesh holes of the first sieve 230 will fall onto the surface of the blanking plate 250. When starting the motor 200, the vibration motor 140 on the outer surface of the box body 100 can also be started at the same time, so that the first sieve 230 and the second sieve 240 vibrate, facilitating the blanking of the cement powder on the upper surface of the first sieve 230. When the cement powder falls onto the surface of the blanking plate 250, the user can select whether to screen the cement powder falling through the first sieve 230 through the screening assembly 300. If not, it will enter the surface of the second sieve 240 through the screening assembly 300 at this time, and then grind the cement powder on the surface of the second sieve 240 according to the same working principle as above, and then make it fall onto the surface of the discharge baffle 400. Then the user can open the valve on the outer surface of the discharge pipe, and the powder enters the interior of the discharge cylinder 410, and then start the auger member 420 to discharge the cement powder through the auger member 420. The user can set a collection device at the opening on the lower side of the outer surface of the discharge cylinder 410. Since the grinding roller assembly 220 inside the box body 100 can fully grind the cement raw materials, providing a good basis for subsequent screening, and at the same time, the two vibration motors 140 symmetrically installed on the left side of the outer surface can drive the box body 100 to vibrate, enabling the materials to be better dispersed and flow inside the box body 100, improving the screening effect of the first sieve 230 and the second sieve 240.

[0027] Please refer to Figures 1 to 3 As the second embodiment of the present invention: a discharge pipe is installed at the center position of the lower surface of the discharge baffle 400. One end of the discharge pipe away from the discharge baffle 400 is connected to the upper side of the outer surface of the discharge cylinder 410. An auger member 420 is rotatably installed inside the discharge cylinder 410 through the motor 200, and the right edge of the lower side of the outer surface of the discharge cylinder 410 is designed to be open;

[0028] The blanking plate 250 is installed obliquely at 25 degrees with the left side higher than the right side below the first sieve 230. The right end of the blanking plate 250 penetrates through the right side surface of the box body 100 and is designed to be open. The right end of the blanking plate 250 is arranged inside the screening box 310. A screening baffle 340 is hinged on the right inner wall of the screening box 310. An electric push rod 330 is hinged between the lower surface of the screening baffle 340 and the right inner wall of the screening box 310. A discharge pipe 320 is installed on the lower surface of the screening box 310;

[0029] A through hole is formed in the right side surface of the box body 100, and the left end of the through hole abuts against the screening baffle 340;

[0030] During use, when the first sieve 230 screens the cement powder onto the upper surface of the blanking plate 250, the cement powder on the upper surface of the blanking plate 250 falls into the interior of the screening box 310 due to gravity. When the user needs the cement powder with the mesh diameter of the first sieve 230, the user retracts the telescopic rod of the electric push rod 330 inside the screening box 310 at this time, so that the screening baffle 340 hinged to the electric push rod 330 hinges inward. At this time, the cement powder on the upper surface of the blanking plate 250 will fall to the bottom inside the screening box 310, and then the discharge pipe 320 is opened to discharge the cement powder screened by the first sieve 230. If the user needs the cement powder with the mesh diameter of the second sieve 240, the user does not start the electric push rod 330 at this time, so that the screening baffle 340 is in its original position. At this time, the powder on the upper surface of the blanking plate 250 will fall onto the upper surface of the screening baffle 340, and then the cement powder on the upper surface of the screening baffle 340 will also fall onto the upper surface of the second sieve 240 through the through hole of the box body 100 due to gravity. Then, according to the operation steps of the previous embodiment, the cement powder on the surface of the second sieve 240 can be ground and collected. Since the screening baffle 340 is hinged by the electric push rod 330, the angle of the screening baffle 340 can be adjusted quickly and flexibly, so that the material can be more effectively stratified and screened in the screening box 310, thereby significantly improving the screening efficiency (the diameters of the meshes of the first sieve 230 and the second sieve 240 are not limited to the above sizes, and the user can select according to actual needs).

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cement grinding device with a screening structure, comprising: A box body (100), a grinding assembly, and a screening assembly (300), characterized in that two vibration motors (140) are symmetrically installed on the left side of the outer surface of the box body (100), a feed inlet (130) and a grinding assembly are installed on the upper surface of the box body (100), elastic support legs (110) are installed on the lower surface of the box body (100), and a screening assembly is installed on the outer surface of the box body (100); A screen one (230) and a screen two (240) are installed inside the box body (100), and a discharge assembly is installed inside the box body (100). The discharge assembly includes: a discharge baffle (400), a discharge pipe, a discharge cylinder (410), and an auger member (420). A discharge pipe is installed on the lower surface of the discharge baffle (400), and the discharge pipe is connected to the discharge cylinder (410). An auger member (420) is installed inside the discharge cylinder (410); The grinding assembly includes: a motor (200), a rotating shaft (210), and a grinding roller assembly (220). The output shaft of the motor (200) is installed with a rotating shaft (210) through a coupling. The grinding roller assembly (220) is installed on the outer surface of the rotating shaft (210) through a mounting rod (222). The screening assembly includes: a screening box (310) and a screening baffle (340). The screening box (310) is installed on the outer surface of the box body (100), and the screening baffle (340) is hinged inside the screening box (310) through an electric push rod (330).

2. The cement grinding device with a screening structure according to claim 1, characterized in that: One elastic support leg (110) is installed at each of the four corners of the lower surface of the box body (100), two feed inlets (130) are symmetrically installed on the upper surface of the box body (100), a motor (200) is installed at the center position of the upper surface of the box body (100), the output shaft of the motor (200) penetrates through the upper surface of the box body (100), and the rotating shaft (210) is rotatably arranged inside the box body (100) through the motor (200).

3. The cement grinding device with a screening structure according to claim 2, wherein: The grinding roller assembly (220) includes: a mounting plate (221), a grinding roller body (223), and a scraper (224). The mounting plate (221) has a U-shaped structure. The left inner wall and the right inner wall inside the mounting plate (221) are rotatably installed with the grinding roller body (223), and the upper surface inside the mounting plate (221) is installed with a scraper (224). The side surface of the scraper (224) away from the mounting plate (221) abuts against the outer surface of the grinding roller body (223).

4. The cement grinding device with a screening structure according to claim 3, characterized in that: Four grinding roller assemblies (220) are symmetrically installed on the outer surface of the rotating shaft (210) through two mounting rods (222) respectively. A first sieve (230) is installed below the two upper grinding roller assemblies (220), and a second sieve (240) is installed below the two lower grinding roller assemblies (220). The diameter of the mesh holes of the first sieve (230) is larger than that of the second sieve (240). A discharge baffle (400) is installed below the second sieve (240).

5. The cement grinding device with a screening structure according to claim 4, characterized in that: A discharge pipe is installed at the center position of the lower surface of the discharge baffle (400). One end of the discharge pipe away from the discharge baffle (400) is connected to the upper side of the outer surface of the discharge cylinder (410). A screw conveyor member (420) is rotatably installed in the discharge cylinder (410) through a motor (200). The lower right edge of the outer surface of the discharge cylinder (410) is designed to be open.

6. The cement grinding device with a screening structure according to claim 5, characterized in that: A feeding plate (250) is installed obliquely at an angle of 25 degrees with the left side higher and the right side lower below the first sieve (230). The right end of the feeding plate (250) penetrates through the right surface of the box body (100) and is designed to be open. The right end of the feeding plate (250) is arranged inside the screening box (310). A screening baffle (340) is hinged to the right inner wall inside the screening box (310). An electric push rod (330) is hinged between the lower surface of the screening baffle (340) and the right inner wall of the screening box (310). A discharge pipe (320) is installed on the lower surface of the screening box (310).

7. The cement grinding device with a screening structure according to claim 6, characterized in that: A through hole is provided on the right surface of the box body (100), and the through hole abuts against the left end of the screening baffle (340).

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