Cement vertical mill equipment capable of improving grinding efficiency

Abstract

The utility model discloses cement vertical mill equipment capable of improving grinding efficiency, which comprises a mounting frame and a milling cylinder, the milling cylinder is fixedly arranged at the top of the mounting frame, and the utility model relates to the technical field of cement processing. According to the cement vertical mill equipment capable of improving the grinding efficiency, the arc-shaped baffle ring is arranged on the inner wall of the grinding cylinder, and the filtering ring plate matched with the grinding disc for use is arranged at the bottom of the arc-shaped baffle ring, so that the arc-shaped baffle ring is easy to carry out enclosure and guide blanking on clinker fragments; secondly, a transverse plate, a vertical plate, an ejector rod, an arc-shaped stop block and a mounting ring are arranged between the millstone and the filter ring plate, so that filter holes of the filter ring plate can be vibrated and flapped through the cooperation during rotation of the millstone, and the filter ring plate has the functions of ventilation, material overflow prevention and air inlet blockage prevention; and therefore, clinker fragments blocked in the filter holes can be beaten and vibrated off, high-efficiency ventilation of the filter ring plate is kept, and the winnowing efficiency is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cement processing, in particular to cement vertical grinding equipment with improved grinding efficiency. Background Art

[0002] In the process of preparing cement clinker into cement powder, a vertical mill is required. A vertical mill is a grinding device that integrates fine crushing, drying, grinding, powder selection, and conveying. The grinding process of the vertical mill is completed by a set of grinding devices (i.e., grinding rollers and grinding discs). The material is ground into powder between the grinding rollers and the grinding discs. The movement of the grinding device is driven by the rotation of the grinding discs, which in turn drives the grinding rollers. A large amount of coarse powder exists in the ground material. The powder is selected by the matching powder selector. The powder selection process is carried out through airflow sorting. During the airflow process, most of the coarse powder automatically falls onto the grinding disc by its own weight and is ground again. The rest is selected by the powder selector as finished products and sent to the finished product storage through the air separation dust collection and conveying system.

[0003] In order to facilitate the collection of powder after grinding in the prior art, an air inlet is opened between the inner wall of the equipment and the grinding disc so as to collect the powder by air separation. Although this setting can facilitate the collection of powder, it is inevitable that there are still some shortcomings in its actual use, such as the lack of a filter mechanism, so that clinker particles will bounce out of the air inlet and get stuck in the air inlet gap during the grinding process, resulting in clinker overflow and local obstruction of air intake, which affects the efficiency of air separation of powder. In order to avoid such problems, a cement vertical mill equipment with improved grinding efficiency is proposed to solve the existing problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a cement vertical mill equipment with improved grinding efficiency, which solves the problem that the air inlet of the device lacks a filter mechanism, resulting in overflowing clinker and clinker jamming at the air inlet, causing air inlet to be blocked and affecting the efficiency of air separation of powder.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A cement vertical mill device for improving grinding efficiency, comprising a mounting frame and a grinding drum, wherein the grinding drum is fixedly arranged on the top of the mounting frame, the bottom of the grinding drum is fixedly connected to a first motor through a bracket, the output shaft of the first motor is fixedly connected to a first rotating shaft through a coupling, and one end of the first rotating shaft extends to the interior of the grinding drum, and the end of the first rotating shaft extending to the interior of the grinding drum is fixedly connected to a grinding disc, and a plurality of air inlets are equidistantly provided around the outer surface of the grinding drum. An arc-shaped baffle ring is fixedly connected to the inner wall of the grinding cylinder and the top of the air inlet, and a filter ring plate used in conjunction with the grinding disc is fixedly connected to the bottom of the arc-shaped baffle ring. A horizontal plate is fixedly connected to one side of the grinding disc, and a vertical plate is slidably connected to the top of the horizontal plate. A top rod is fixedly connected to one side of the vertical plate. A mounting ring is fixedly connected between the two sides of the inner cavity of the grinding cylinder through a bracket, and a number of arc-shaped baffles used in conjunction with the ejector rod are fixedly arranged at equal intervals on the inner surface of the mounting ring. An air separation mechanism used in conjunction with the air inlet is provided on the top of the grinding cylinder.

[0006] Preferably, a sliding groove is provided on the top of the horizontal plate, a sliding block is slidably connected inside the sliding groove, and the top of the sliding block is fixedly connected to the bottom of the vertical plate, a return spring is fixedly connected between the sliding block and the sliding groove, and several return springs are provided, and a rotating sleeve is rotatably provided on the surface of the top rod.

[0007] Preferably, one side of the grinding cylinder is connected to a feed pipe, and the end of the feed pipe is centrally arranged inside the grinding cylinder, and a conical distribution plate used in conjunction with the feed pipe is fixedly arranged on the top of the grinding disc.

[0008] Preferably, a plurality of second motors are fixedly arranged at equal intervals around the surface of the grinding cylinder through a bracket, the output shaft of the second motor is fixedly connected to the second rotating shaft through a coupling, and one end of the second rotating shaft extends to the interior of the grinding cylinder, and the end of the second rotating shaft extending to the interior of the grinding cylinder is fixedly connected to a grinding roller used in conjunction with the grinding disc.

[0009] Preferably, the air separation mechanism includes a third motor, which is fixedly arranged on the top of the grinding cylinder through a bracket, and the output shaft of the third motor is fixedly connected to the third rotating shaft through a coupling, and one end of the third rotating shaft extends to the interior of the grinding cylinder, and the surface of the third rotating shaft is fixedly connected with a plurality of fan blades equidistantly around the interior of the grinding cylinder, and the top of the grinding cylinder is connected to a powder conveying pipe.

[0010] Preferably, an auxiliary ring is fixedly connected to the inner wall of the grinding cylinder, and the inner surface of the auxiliary ring is rotatably connected to the surface of the grinding disc through a bearing.

[0011] Beneficial effects

[0012] The utility model provides a cement vertical mill device for improving grinding efficiency. Compared with the existing technology, the utility model has the following beneficial effects: the utility model provides an arc-shaped retaining ring on the inner wall of the grinding cylinder, and provides a filter ring plate used in conjunction with the grinding disc at the bottom of the arc-shaped retaining ring, so that the arc-shaped retaining ring can easily enclose and guide the clinker fragments to be discharged, and the filter ring plate can both ventilate and enclose the problem of material overflow and blockage of the air inlet. Secondly, a horizontal plate, a vertical plate, a top rod, an arc-shaped retaining block and a mounting ring are provided between the grinding disc and the filter ring plate, so that during the rotation of the grinding disc, the filter holes of the filter ring plate can also be vibrated and beaten through the above-mentioned coordination, so as to knock and shake off the clinker fragments stuck in the filter holes, maintain high-efficiency ventilation of the filter ring plate, and avoid the reduction of air separation efficiency. Secondly, a conical material distribution plate is provided on the top of the grinding disc, so that the conical material distribution plate can easily disperse the fed clinker into the grinding range of the grinding roller quickly, thereby promoting the further improvement of the grinding efficiency of the grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the grinding cylinder structure of the utility model;

[0015] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle;

[0016] Figure 4 This is a top view of the internal structure of the grinding cylinder of the utility model;

[0017] Figure 5 This is a bottom view of the grinding disc and mounting ring structure of the utility model;

[0018] Figure 6 This is a top view of the mounting ring and riser structure of the present invention.

[0019] In the figure: 1. Mounting frame; 2. Grinding cylinder; 3. First motor; 4. First rotating shaft; 5. Grinding disc; 6. Air inlet; 7. Arc-shaped baffle ring; 8. Filter ring plate; 9. Horizontal plate; 10. Vertical plate; 11. Push rod; 12. Arc-shaped baffle block; 13. Air separation mechanism; 131. Third motor; 132. Third rotating shaft; 133. Fan blade; 134. Powder conveying pipe; 14. Chute; 15. Sliding block; 16. Return spring; 17. Rotating sleeve; 18. Conical distribution plate; 19. Feeding pipe; 20. Second motor; 21. Second rotating shaft; 22. Grinding roller; 23. Auxiliary ring; 24. Mounting ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-6 The utility model provides a technical solution: a cement vertical mill equipment for improving grinding efficiency, comprising a mounting frame 1 and a grinding drum 2, the grinding drum 2 being fixedly arranged on the top of the mounting frame 1, the bottom of the grinding drum 2 being fixedly connected to a first motor 3 via a bracket, the output shaft of the first motor 3 being fixedly connected to a first rotating shaft 4 via a coupling, and one end of the first rotating shaft 4 extending into the interior of the grinding drum 2, the end of the first rotating shaft 4 extending into the interior of the grinding drum 2 being fixedly connected to a grinding disc 5, a plurality of air inlets 6 being equidistantly opened around the outer surface of the grinding drum 2, and an air separation mechanism 13 used in conjunction with the air inlet 6 being provided on the top of the grinding drum 2;

[0022] The air separation mechanism 13 includes a third motor 131, which is fixed to the top of the grinding drum 2 via a bracket. The output shaft of the third motor 131 is fixedly connected to a third rotating shaft 132 via a coupling, and one end of the third rotating shaft 132 extends into the interior of the grinding drum 2. A plurality of fan blades 133 are fixedly connected to the surface of the third rotating shaft 132 and are located inside the grinding drum 2 and are equidistantly surrounded. A powder conveying pipe 134 is connected to the top of the grinding drum 2, and a feed pipe 19 is connected to one side of the grinding drum 2, and the end of the feed pipe 19 is centrally located inside the grinding drum 2.

[0023] A plurality of second motors 20 are fixedly arranged at equal intervals around the surface of the grinding cylinder 2 through a bracket. The output shaft of the second motor 20 is fixedly connected to the second rotating shaft 21 through a coupling, and one end of the second rotating shaft 21 extends to the interior of the grinding cylinder 2. The end of the second rotating shaft 21 extending to the interior of the grinding cylinder 2 is fixedly connected to a grinding roller 22 used in conjunction with the grinding disc 5.

[0024] Furthermore, in order to facilitate the enclosure of clinker fragments on the basis of ensuring high-efficiency ventilation, an arc-shaped baffle ring 7 is fixedly connected to the inner wall of the grinding cylinder 2 and at the top of the air inlet 6. The bottom of the arc-shaped baffle ring 7 is fixedly connected to a filter ring plate 8 used in conjunction with the grinding disc 5. A horizontal plate 9 is fixedly connected to one side of the grinding disc 5. A vertical plate 10 is slidably connected to the top of the horizontal plate 9. A top of the vertical plate 10 is fixedly connected to a push rod 11. A mounting ring 24 is fixedly connected between the two sides of the inner cavity of the grinding cylinder 2 through a bracket, and a plurality of arc-shaped stoppers 12 used in conjunction with the push rod 11 are fixedly arranged around the inner surface of the mounting ring 24 at equal intervals. A slide groove 14 is provided on the top of the horizontal plate 9. A sliding block 15 is slidably connected to the inside of the slide groove 14, and the top of the sliding block 15 is fixedly connected to the bottom of the vertical plate 10. A return spring 16 is fixedly connected between the sliding block 15 and the slide groove 14, and several return springs 16 are provided. A rotating sleeve 17 is provided on the surface of the push rod 11 for rotation.

[0025] In order to facilitate the rapid dispersion of the clinker into the grinding range of the grinding roller 22, a conical distribution plate 18 used in conjunction with the feed pipe 19 is fixedly provided on the top of the grinding disc 5.

[0026] In order to enhance the stability of the grinding disc 5 , an auxiliary ring 23 is fixedly connected to the inner wall of the grinding cylinder 2 , and the inner surface of the auxiliary ring 23 is rotatably connected to the surface of the grinding disc 5 through a bearing.

[0027] During use, the loose cement clinker is fed to the top of the grinding disc 5 through the feed pipe 19. When the clinker falls on the top of the grinding disc 5, it will be pre-collected by the conical distribution plate 18 and dispersed into the grinding range of the grinding roller 22 in a conical shape.

[0028] Then, the first motor 3, the second motor 20, and the third motor 131 are started. The first motor 3 starts to drive the first rotating shaft 4 to slowly rotate the grinding disc 5. The rotation of the grinding disc 5 drives the clinker to rotate. The second motor 20 starts to drive the second rotating shaft 21 to drive the grinding roller 22 to grind the rotating clinker. The third motor 131 starts to drive the third rotating shaft 132 to rotate the fan blades 133 at high speed. The rotation of the fan blades 133 draws air from the air inlet 6, and blows the wind and the mixed ground powder to the powder conveying pipe 134. The powder is then transferred to the next process through the powder conveying pipe 134.

[0029] The rotation of the grinding disc 5 drives the horizontal plate 9 to rotate at the same time, and the horizontal plate 9 drives the vertical plate 10 and the push rod 11 to rotate. The push rod 11 rotates and continuously squeezes and cooperates with the arc-shaped stopper 12 of the inner circle of the mounting ring 24. The push rod 11 is squeezed and reset by force, which can drive the vertical plate 10 to reciprocate and beat the filter holes of the filter ring plate 8, so that the clinker stuck inside the filter holes is hard-beaten and vibrated off.

Claims

1. A cement vertical mill for improving grinding efficiency, comprising a mounting frame (1) and a grinding cylinder (2), wherein the grinding cylinder (2) is fixedly arranged on the top of the mounting frame (1), and is characterized in that: The bottom of the grinding cylinder (2) is fixedly connected to a first motor (3) via a bracket, the output shaft of the first motor (3) is fixedly connected to a first rotating shaft (4) via a coupling, and one end of the first rotating shaft (4) extends into the interior of the grinding cylinder (2), and one end of the first rotating shaft (4) extending into the interior of the grinding cylinder (2) is fixedly connected to a grinding disc (5), a plurality of air inlets (6) are equidistantly provided around the outer surface of the grinding cylinder (2), an arc-shaped retaining ring (7) is fixedly connected to the inner wall of the grinding cylinder (2) and located at the top of the air inlet (6), and the bottom of the arc-shaped retaining ring (7) is fixedly connected to A filter ring plate (8) is provided for use with a grinding disc (5); a horizontal plate (9) is fixedly connected to one side of the grinding disc (5); a vertical plate (10) is slidably connected to the top of the horizontal plate (9); a top rod (11) is fixedly connected to one side of the vertical plate (10); a mounting ring (24) is fixedly connected between the two sides of the inner cavity of the grinding cylinder (2) via a bracket; and a plurality of arc-shaped stoppers (12) for use with the top rod (11) are fixedly arranged at equal intervals around the inner surface of the mounting ring (24); and a wind selection mechanism (13) for use with the air inlet (6) is provided on the top of the grinding cylinder (2).

2. The cement vertical mill for improving grinding efficiency according to claim 1, characterized in that: A sliding groove (14) is provided on the top of the horizontal plate (9), a sliding block (15) is slidably connected inside the sliding groove (14), and the top of the sliding block (15) is fixedly connected to the bottom of the vertical plate (10), a return spring (16) is fixedly connected between the sliding block (15) and the sliding groove (14), and a plurality of return springs (16) are provided, and a rotating sleeve (17) is rotatably provided on the surface of the top rod (11).

3. The cement vertical mill for improving grinding efficiency according to claim 1, characterized in that: One side of the grinding cylinder (2) is connected to a feed pipe (19), and the end of the feed pipe (19) is centrally arranged inside the grinding cylinder (2). A conical distribution plate (18) used in conjunction with the feed pipe (19) is fixedly arranged on the top of the grinding disc (5).

4. The cement vertical mill for improving grinding efficiency according to claim 1, characterized in that: A plurality of second motors (20) are fixedly arranged around the surface of the grinding cylinder (2) at equal intervals via a bracket, the output shaft of the second motor (20) is fixedly connected to a second rotating shaft (21) via a coupling, and one end of the second rotating shaft (21) extends into the interior of the grinding cylinder (2), and one end of the second rotating shaft (21) extending into the interior of the grinding cylinder (2) is fixedly connected to a grinding roller (22) used in conjunction with the grinding disc (5).

5. The cement vertical mill for improving grinding efficiency according to claim 1, characterized in that: The air separation mechanism (13) includes a third motor (131), which is fixedly arranged on the top of the grinding cylinder (2) through a bracket, and the output shaft of the third motor (131) is fixedly connected to the third rotating shaft (132) through a coupling, and one end of the third rotating shaft (132) extends to the inside of the grinding cylinder (2), and a plurality of fan blades (133) are fixedly connected to the surface of the third rotating shaft (132) and are located inside the grinding cylinder (2) at equal intervals, and the top of the grinding cylinder (2) is connected to a powder conveying pipe (134).

6. The cement vertical mill for improving grinding efficiency according to claim 1, characterized in that: An auxiliary ring (23) is fixedly connected to the inner wall of the grinding cylinder (2), and the inner surface of the auxiliary ring (23) is rotatably connected to the surface of the grinding disc (5) via a bearing.

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