Slag micro-powder grading device

Abstract

The utility model relates to the technical field of superfine slag powder production equipment, and discloses a superfine slag powder grading device which comprises a shell, a sealing cover is connected to the top of the shell in a clamped mode, an air blower is fixedly installed on the top of the sealing cover, and a driving grading assembly is rotationally arranged in the shell. The driving grading assembly comprises an outer screen, an inner screen, an inner gear ring, a driven gear and a main gear column, the ash removal assembly is movably arranged on the outer screen and the inner screen and comprises an air supply pipe, a wall-following air pipe, a movable ring and a movable ball, air is supplied into the air supply pipe and the wall-following air pipe through an air blower, air flow blows mineral powder attached to the inner screen or the outer screen, and the dust removal effect is achieved. The wet mineral powder is blow-dried, airflow penetrates through the inner screen or the outer screen to blow the movable balls in the inner screen or the outer screen, the movable balls form a chattering effect in the corresponding movable rings to avoid blockage, the mineral powder is scraped off in cooperation with the wall-along air pipe, the mineral powder is screened out in the grading screening process, and shutdown maintenance is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of slag powder production equipment, specifically, it relates to a slag powder grading device. Background Technology

[0002] The slag powder grading device is a key piece of equipment used to classify slag powder according to particle size. Its core function is to separate slag powder that meets specific particle size requirements, ensuring that the product has a uniform particle size distribution and meeting the strict particle size requirements of different industrial applications (such as concrete admixtures, cement production, etc.).

[0003] The prior art discloses a slag powder grading device (CN213315271U), which includes a shell and a cover hinged to the top of the shell. A primary screen is fixedly mounted on a linkage rod inside the shell. The linkage rod passes through the bottom of the cover and is connected to the output shaft of a motor fixedly mounted on a bracket. A sealing sleeve fixed inside the cover is fitted over the linkage rod. A discharge port connected to the cover is fixedly installed on the side of the cover. The trapezoidal screen increases its contact area with the slag during rotation, expanding the screening area within a limited range. In addition, under the action of centrifugal force, most of the slag will be screened out along the trapezoidal sidewall, making the sorting efficiency faster. The swinging mechanism causes the primary and secondary screens to tilt and swing during the movement, causing the slag powder inside to slide violently, increasing the amount of powder movement and accelerating the screening speed.

[0004] Research revealed that existing technologies use a swing mechanism to tilt and swing the primary and secondary screens during operation. However, during slag grading, the sticky mineral powder adheres to the inner wall of the screen due to the influence of ambient humidity and temperature, causing screen blockage and requiring manual shutdown for maintenance. Furthermore, the grading accuracy of grading screens operating in the same direction and at the same speed is affected by the rotation speed, and the centrifugal force in the same direction also affects the mineral powder screening rate, which is not conducive to improving the efficiency of grading and screening.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A slag powder grading device, comprising

[0008] The outer casing has a cover that snaps onto its top, and a blower is fixedly mounted on the top of the cover.

[0009] A driving grading assembly is rotatably disposed within a housing. The driving grading assembly includes an outer screen, an inner screen, an inner gear ring, a driven gear, and a main gear post. The main gear post is engaged with the bottom of the inner screen. The inner gear ring is fixed to the bottom surface of the outer screen by bolts. The inner gear ring, driven gear, and main gear post are all rotatably disposed on the inner bottom surface of the housing. Three driven gears are provided, and the three driven gears are driven between the inner gear ring and the main gear post.

[0010] The dust removal assembly is movably mounted on the outer and inner screens. The dust removal assembly includes an air supply duct, a wall-mounted air duct, a movable ring, and a movable ball. The air supply duct is fixedly mounted inside the cover, and the wall-mounted air duct is fixedly mounted at the bottom of the protrusion. The blower is connected to the wall-mounted air duct through the air supply duct. Multiple movable rings and movable balls are provided, and multiple sets of movable rings and movable balls are provided inside both the outer and inner screens.

[0011] In a preferred embodiment of this utility model, a motor is fixedly mounted on the bottom of the outer shell by a bracket, the output end of the motor is connected to the bottom surface of the main gear column, and a drive cavity is opened on the inner bottom surface of the outer shell. The internal gear ring, the driven gear and the main gear column are all rotatably mounted in the drive cavity.

[0012] In a preferred embodiment of this utility model, the main gear column is rotatably disposed at the center of the drive cavity, the internal gear ring is rotatably disposed on the inner curved surface of the drive cavity, and three round shafts are arranged in an array on the bottom surface of the drive cavity, with the three driven gears respectively rotatably connected to one round shaft.

[0013] In a preferred embodiment of this utility model, a scraping brush is fixedly provided on the outer curved surface of the outer screen, the main gear column rotates through the bottom center of the outer screen, a locking block is fixedly provided on the top surface of the main gear column, and a corresponding locking groove is opened on the bottom surface of the inner screen, the locking groove engaging the locking block.

[0014] In a preferred embodiment of this utility model, the inner bottom surface of the inner screen is provided with a rotating groove, the bottom of the air supply pipe is rotatably connected in the rotating groove, the shape of the cross section between the outer screen and the inner screen is corresponding to the shape of the wall-mounted air pipe, and the bottom surface of the wall-mounted air pipe is provided with a plurality of protrusions for grinding slag.

[0015] In a preferred embodiment of this utility model, air holes are arrayed on one side of the wall-mounted air duct that is attached to the outer and inner screens, and the air holes are arranged corresponding to the movable ring.

[0016] In a preferred embodiment of this utility model, the outer screen and the inner screen have similar structures but different specifications. Both the outer screen and the inner screen have hollow cavities inside. Each hollow cavity is provided with a movable ring and a movable ball. The movable ring is sleeved inside the movable ball and is fixedly installed inside the hollow cavity.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By setting up a dust removal component, a blower is used to send air into the air supply duct and the wall-mounted air duct. The airflow passes through the inner or outer screen and blows the movable balls inside. The movement of the movable balls and the airflow creates a vibration effect in the corresponding movable rings to prevent blockage. At the same time, the airflow blows the mineral powder adhering to the inner and outer screens, drying the moist mineral powder. In conjunction with the wall-mounted air duct that is attached to the inner or outer screen wall, the mineral powder is scraped off and screened out during the grading and screening process, avoiding downtime for maintenance.

[0019] 2. By setting up a drive grading component, the characteristics of planetary gears are used to drive the inner and outer screens to rotate in both directions. The centrifugal forces generated in the two directions cause the mineral powder to be screened in different directions, avoiding disturbance from centrifugal forces in the same direction and improving the screening efficiency.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the drive cavity of this utility model;

[0024] Figure 3 This is a disassembled schematic diagram of the internal structure of this utility model;

[0025] Figure 4 This is a disassembly diagram of the main gear column and inner screen of this utility model;

[0026] Figure 5 The present utility model Figure 1 Enlarged diagram of point A inside.

[0027] In the diagram: 10. Outer shell; 11. Cover; 12. Blower; 13. Motor; 14. Wall scraper; 15. Discharge port; 16. Outer screen; 17. Inner screen; 18. Drive chamber; 19. Internal gear ring; 20. Driven gear; 21. Main gear column; 22. Slot; 23. Air supply duct; 24. Protrusion; 25. Wall-mounted air duct; 26. Air hole; 27. Rotary groove; 28. Locking block; 29. ​​Movable ring; 30. Movable ball. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] A slag powder grading device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, including

[0030] The outer casing 10 has a cover 11 that is snapped onto its top, and a blower 12 is fixedly mounted on the top of the cover 11.

[0031] The driving grading assembly is rotatably disposed within the housing 10. The driving grading assembly includes an outer screen 16, an inner screen 17, an inner gear ring 19, a driven gear 20, and a main gear column 21. The main gear column 21 is engaged with the bottom of the inner screen 17. The inner gear ring 19 is fixedly disposed on the bottom surface of the outer screen 16 by bolts. The inner gear ring 19, the driven gear 20, and the main gear column 21 are all rotatably disposed on the inner bottom surface of the housing 10. There are three driven gears 20, and the three driven gears 20 are driven between the inner gear ring 19 and the main gear column 21.

[0032] The dust removal assembly is movably mounted on the outer screen 16 and the inner screen 17. The dust removal assembly includes an air supply duct 23, a wall-mounted air duct 25, a movable ring 29, and a movable ball 30. The air supply duct 23 is fixedly mounted inside the cover 11, and the wall-mounted air duct 25 is fixedly mounted at the bottom of the protrusion 24. The blower 12 communicates with the wall-mounted air duct 25 through the air supply duct 23. Multiple movable rings 29 and movable balls 30 are provided. Multiple sets of movable rings 29 and movable balls 30 are provided inside both the outer screen 16 and the inner screen 17.

[0033] Specifically, during use, the slag powder is poured into the inner screen 17, and the cover 11 is tightened. After ensuring that the air supply pipe 23 is secured by the inner screen 17, the blower 12 is started. The blower 12 blows the airflow through the air supply pipe 23 and the wall-mounted air pipe 25 into the device. The airflow passes through the inner screen 17 and the outer screen 16 in sequence, blowing the movable balls 30 inside. The movable balls 30 collide with the airflow and create a vibration effect in the corresponding movable rings 29, preventing blockage. At the same time, the airflow blows the mineral powder adhering to the inner screen 17 and the outer screen 16, drying the moist mineral powder. The wall-mounted air pipe 25 scrapes the mineral powder off, separating the mineral powder during the grading and screening process, avoiding downtime for maintenance. During the process, the outer screen 16 and the inner screen 17 rotate in different directions under the drive of the grading component, realizing centrifugal force in different directions, thereby centrifugally screening the mineral powder in different directions, avoiding disturbance of centrifugal force in the same direction, and improving the screening efficiency.

[0034] like Figure 1 and Figure 2 As shown, a motor 13 is fixedly mounted on the bottom of the housing 10 by a bracket. The output end of the motor 13 is connected to the bottom surface of the main gear column 21. A drive cavity 18 is opened on the inner bottom surface of the housing 10. The internal gear ring 19, the driven gear 20 and the main gear column 21 are all rotatably mounted in the drive cavity 18.

[0035] like Figure 2 As shown, the main gear column 21 is rotatably disposed at the center of the drive cavity 18, the internal gear ring 19 is rotatably disposed on the inner curved surface of the drive cavity 18, and three round shafts are arranged in an array on the bottom surface of the drive cavity 18, with the three driven gears 20 respectively rotatably connected to one round shaft.

[0036] The working principle is as follows: the main gear column 21 consists of a cylinder and a gear ring. The gear ring is fixedly connected to the central curved surface of the cylinder. The output end of the motor 13 is connected to the bottom surface of the cylinder. The gear ring meshes with three driven gears 20 for transmission. When in use, the motor 13 drives the main gear column 21 to rotate. The three driven gears 20 mesh with the main gear column 21 to rotate around the corresponding circular shaft. The rotating three driven gears 20 mesh to drive the internal gear ring 19 to rotate. The internal gear ring 19 drives the connected outer screen 16 to rotate. The main gear column 21 drives the connected inner screen 17 to rotate. The outer screen 16 is located above the drive bottom cavity 18, and the inner screen 17 is located inside the outer screen 16.

[0037] like Figure 3 and Figure 4 As shown, a scraping brush 14 is fixedly installed on the outer curved surface of the outer screen 16, and the main gear column 21 rotates through the bottom center of the outer screen 16. A locking block 28 is fixedly installed on the top surface of the main gear column 21, and a corresponding slot 22 is opened on the bottom surface of the inner screen 17, which engages with the locking block 28.

[0038] like Figure 3 and Figure 4 As shown, the inner bottom surface of the inner screen 17 is provided with a rotating groove 27, and the bottom of the air supply pipe 23 is rotatably connected inside the rotating groove 27. The shape of the cross section between the outer screen 16 and the inner screen 17 is corresponding to the shape of the wall-mounted air pipe 25. Multiple protrusions 24 for grinding slag are provided on the bottom surface of the wall-mounted air pipe 25.

[0039] The working principle is as follows: the wall scraper 14 has a J-shaped structure, and the locking block 28 and the locking groove 22 are both cross-shaped structures. The locking block 28 and the locking groove 22 can facilitate the disassembly of the main gear column 21 and the inner screen 17. However, it should be noted that the mineral powder particles are small. Therefore, a sealing ring is provided between the drive bottom cavity 18 and the outer screen 16. Similarly, a sealing ring of a different specification is provided at the connection between the inner screen 17 and the outer screen 16. The sealing ring can prevent the mineral powder from penetrating into the gap. The shape of the wall scraper 14 fits the inner wall surface of the outer shell 10. When the outer screen 16 and the inner screen 17 rotate respectively, the wall scraper 14 rotates inside the outer shell 10 and scrapes off the mineral powder attached to the inner wall surface. At the same time, the outer screen 16 and the inner screen 17 rotate around the wall surface of the wall-mounted air duct 25. Meanwhile, the protrusion 24 fits the bottom surface of the outer screen 16 and the inner screen 17 to grind the mineral powder that cannot be screened due to its larger size.

[0040] like Figure 1 , Figure 3 and Figure 5 As shown, air holes 26 are arrayed on one side of the wall-mounted air duct 25 that is attached to the outer screen 16 and the inner screen 17, and the air holes 26 are set corresponding to the movable ring 29.

[0041] like Figure 1 and Figure 5 As shown, the outer screen 16 and the inner screen 17 have similar structures but different specifications. Both the outer screen 16 and the inner screen 17 have hollow cavities inside. Each hollow cavity is provided with a movable ring 29 and a movable ball 30. The movable ring 29 is sleeved inside the movable ball 30 and is fixedly installed inside the hollow cavity.

[0042] The working principle is as follows: the air hole 26 is located on the side of the outer screen 16 and the inner screen 17 that is in contact with the wall-mounted air duct 25. The airflow can be blown into the hollow cavity inside the outer screen 16 and the inner screen 17 through the air hole 26. The movable ball 30 is set inside the movable ring 29, which is fixed in the hollow cavity. When the airflow collides with the movable ball 30, the movable cavity 30 will vibrate the hollow cavity inside the movable ring 29, thereby shaking off the mineral powder that has been dried on the outer screen 16 and the inner screen 17.

[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A slag powder grading device, characterized in that, include The outer casing (10) has a cover (11) snapped onto its top, and a blower (12) is fixedly installed on the top of the cover (11). A drive grading assembly is rotatably disposed inside a housing (10). The drive grading assembly includes an outer screen (16), an inner screen (17), an inner gear ring (19), a driven gear (20), and a main gear column (21). The main gear column (21) is engaged with the bottom of the inner screen (17). The inner gear ring (19) is fixedly disposed on the bottom surface of the outer screen (16) by bolts. The inner gear ring (19), the driven gear (20), and the main gear column (21) are all rotatably disposed on the inner bottom surface of the housing (10). There are three driven gears (20), and the three driven gears (20) are driven between the inner gear ring (19) and the main gear column (21). The dust removal assembly is movably mounted on the outer screen (16) and the inner screen (17). The dust removal assembly includes an air supply pipe (23), a wall-mounted air duct (25), a movable ring (29), and a movable ball (30). The air supply pipe (23) is fixedly mounted inside the cover (11), and the wall-mounted air duct (25) is fixedly mounted at the bottom of the protrusion (24). The blower (12) is connected to the wall-mounted air duct (25) through the air supply pipe (23). Multiple movable rings (29) and movable balls (30) are provided. Multiple sets of movable rings (29) and movable balls (30) are provided inside the outer screen (16) and the inner screen (17).

2. The slag powder grading device according to claim 1, characterized in that, A motor (13) is fixedly mounted on the bottom of the outer shell (10) by a bracket. The output end of the motor (13) is connected to the bottom surface of the main gear column (21). A drive cavity (18) is opened on the inner bottom surface of the outer shell (10). The internal gear ring (19), the driven gear (20) and the main gear column (21) are all rotatably mounted in the drive cavity (18).

3. The slag powder grading device according to claim 2, characterized in that, The main gear column (21) is rotatably disposed at the center of the drive cavity (18), the internal gear ring (19) is rotatably disposed on the inner curved surface of the drive cavity (18), and the bottom surface of the drive cavity (18) is provided with three round shafts, and the three driven gears (20) are respectively rotatably connected to one round shaft.

4. The slag powder grading device according to claim 3, characterized in that, A scraping brush (14) is fixedly installed on the outer curved surface of the outer screen (16). The main gear column (21) rotates through the bottom center of the outer screen (16). A locking block (28) is fixedly installed on the top surface of the main gear column (21). A corresponding slot (22) is opened on the bottom surface of the inner screen (17) for the locking block (28). The slot (22) engages with the locking block (28).

5. A slag powder grading device according to claim 4, characterized in that, The inner bottom surface of the inner screen (17) is provided with a rotating groove (27), and the bottom of the air supply pipe (23) is rotatably connected in the rotating groove (27). The shape of the cross section between the outer screen (16) and the inner screen (17) is corresponding to the shape of the wall-mounted air pipe (25). The bottom surface of the wall-mounted air pipe (25) is provided with a plurality of protrusions (24) for grinding slag.

6. A slag powder grading device according to claim 5, characterized in that, The wall-mounted air duct (25) has air holes (26) arranged in an array on one side of the outer screen (16) and inner screen (17), and the air holes (26) are set corresponding to the movable ring (29).

7. A slag powder grading device according to claim 6, characterized in that, The outer screen (16) and the inner screen (17) have similar structures but different specifications. Both the outer screen (16) and the inner screen (17) have hollow cavities inside. Each hollow cavity is provided with a movable ring (29) and a movable ball (30). The movable ring (29) is sleeved inside the movable ball (30). The movable ring (29) is fixedly installed inside the hollow cavity.

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