A convenient vertical mill slag discharge port sealing device and sealing method

Abstract

The present invention discloses a convenient vertical mill slag discharge port sealing device and sealing method, including a slag discharge pipe, a buffer box connected to the slag discharge pipe and a conveying mechanism, an adjustment cylinder is penetrated and slidably installed on the left side of the top of the buffer box, and an adjustment plate is fixedly installed on the front of the adjustment cylinder and located above the buffer box. The present invention relates to the technical field of vertical mill discharge sealing. The convenient vertical mill slag discharge port sealing device and sealing method utilizes the buffer box to temporarily carry the slag. As the slag is discharged, the driving motor drives the spiral feed shaft to rotate, so that the slag can submerge the slag discharge pipe, thereby achieving sealing of the slag discharge pipe. In this case, when the slag rises to contact the bottom of the adjustment tube, the spiral feed shaft will convey the slag to the telescopic sleeve, and then convey it to the external soil slag bucket elevator through the conveying mechanism, and then send it back to the vertical mill for re-grinding.

Description

Technical Field

[0001] The invention relates to the technical field of vertical mill discharge sealing, and in particular to a convenient vertical mill discharge port sealing device and a sealing method. Background Art

[0002] Vertical mill is an ideal large-scale grinding equipment, widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries. It integrates crushing, drying, grinding, grading and conveying, with high production efficiency, and can grind block, granular and powdered raw materials into required powdered materials. After the rolled materials are thrown out from the grinding disc, the finer particles and powdered materials are brought into the powder concentrator on the upper part of the mill by the wind at the nozzle ring, and the larger particles fall from the nozzle ring into the slag discharge port, and are sent to the slag discharge bucket elevator through the air lock and conveying device, and then sent back to the mill for re-grinding.

[0003] The slag outlet air lock and conveying devices currently mainly adopt the form of vibrating feeder or heavy hammer air lock valve + belt conveyor. These structures generally have defects such as high failure rate, large maintenance workload, heavy wear and tear, and large air leakage. The air leakage leads to increased power consumption per unit product.

[0004] For example, a vertical mill slag spitting air locking device with application number 201720190673.7 measures the material weight by a weighing roller group, thereby controlling the running speed of the variable frequency speed regulation belt conveyor, and relies on the natural formation of a material column in the process of material falling to lock the air, thereby solving the above-mentioned problem. However, this method is complicated to operate, and relies on the weighing of a weighing sensor as a variable frequency speed regulation control instruction, and uses a distributed control system for speed control. The addition of the system not only increases the design cost, but also greatly increases the difficulty of maintenance, and at the same time cannot ensure that the slag discharge port is completely and effectively sealed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a convenient sealing device and sealing method for a slag discharge port of a vertical mill, which solves the problem that the conventional slag discharge port air locking method cannot achieve effective and thorough sealing.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a convenient vertical mill slag discharge port sealing device, comprising a slag discharge pipe, a buffer box connected to the slag discharge pipe and a conveying mechanism, an adjusting cylinder is penetrated and slidably installed on the left side of the top of the buffer box, an adjusting plate is fixedly installed on the front of the adjusting cylinder and located above the buffer box, and an adjusting limit assembly adapted to the adjusting plate is fixedly connected to the top of the buffer box, a spiral feed shaft is rotatably installed inside the adjusting cylinder, the top end of the spiral feed shaft penetrates the adjusting cylinder and extends to the top of the adjusting cylinder, and the front and rear sides of the top of the buffer box and located on the outer periphery of the adjusting cylinder are provided. A bracket is fixedly connected by bolts, and a driving motor is fixedly installed on the top of the bracket, wherein the bracket includes four vertical poles and a mounting plate, the four vertical poles are respectively fixedly installed at the four corners of the bottom of the mounting plate, and the bottom of the vertical poles is fixedly connected to the top of the buffer box by bolts, the driving motor is fixedly installed on the top of the mounting plate, and a round hole is also opened on the top of the mounting plate, the bottom end of the output end of the driving motor is fixedly connected to the top of the spiral feed shaft through a coupling, the left side of the adjusting cylinder is connected to the telescopic sleeve, and the end of the telescopic sleeve away from the adjusting cylinder is fixed to the top of the conveying mechanism and is connected to the interior of the conveying mechanism.

[0009] By adopting the above technical solution, a buffer box is used to temporarily carry the slag. As the slag is discharged, the driving motor drives the spiral feed shaft to rotate so that the slag can submerge the slag discharge pipe, thereby achieving sealing of the slag discharge pipe. In this case, when the slag rises to contact the bottom of the adjusting cylinder, the spiral feed shaft will transport the slag to the telescopic sleeve, and then transport it to the external soil slag bucket elevator through the conveying mechanism, and then send it back to the vertical mill for re-grinding.

[0010] The present invention is further configured as follows: the adjustment limit assembly includes a threaded column and an auxiliary rod, the bottom ends of the threaded column and the auxiliary rod are fixedly installed on the top of the buffer box, and the top ends of the threaded column and the auxiliary rod penetrate the adjustment plate and extend to the top of the adjustment plate, and the outer surface of the threaded column and the upper and lower sides of the adjustment plate are threadedly connected with fastening nuts.

[0011] By adopting the above technical solution and utilizing the setting of the threaded column and two fastening nuts, the position of the adjusting plate on the threaded column can be adjusted after loosening the two fastening nuts, and after the adjustment, the adjusting plate can be stably clamped and limited by tightening the two fastening nuts, thereby making the height of the adjusting cylinder in the buffer box adjustable, which is more convenient to use.

[0012] The present invention is further configured as follows: the telescopic sleeve includes a guide tube, a transfer tube is sleeved and slidably installed on the outer periphery of the guide tube, a first limiting ring is sleeved and fixedly connected on the outer periphery of the guide tube and located inside the transfer tube, a mounting sleeve is sleeved and slidably installed on the outer periphery of the transfer tube, a second limiting ring is fixedly connected on the outer periphery of the transfer tube and located inside the mounting sleeve, the guide tube is connected to and fixedly installed on the left side of the adjusting tube, and the mounting sleeve is connected to and fixedly installed on the top of the conveying mechanism.

[0013] By adopting the above technical solution and utilizing the coordinated arrangement of the guide tube, the transfer tube and the installation sleeve, the telescopic sleeve has a telescopic function, so that when the adjusting tube drives the guide tube to move up and down and maintain stability, the slag in the adjusting tube can be effectively transported to the conveying mechanism.

[0014] The present invention is further configured as follows: the buffer box comprises a front half box body and a rear half box body, the front half box body and the rear half box body are fixedly connected by bolts and nuts, and the tops of opposite sides of the front half box body and the rear half box body are provided with a first semicircular groove and a second semicircular groove adapted to the adjusting cylinder and the slag discharge pipe from left to right.

[0015] The present invention is further configured as follows: transparent observation windows are provided on both sides of the front face of the front half box, supporting feet are fixedly connected around the bottom of the front half box and the rear half box, and two adjacent supporting feet at the bottom of the front half box and the rear half box are fixedly connected by bolts and nuts.

[0016] The present invention is further configured as follows: the bottoms of the front half box and the rear half box are both connected with material guiding semi-cylinders, and the bottoms of the outer circumferences of the two material guiding semi-cylinders are threadedly connected with sealing covers.

[0017] The present invention also discloses a sealing method for a portable vertical mill slag discharge port sealing device, which specifically comprises the following steps:

[0018] Step 1: Material guiding: The slag generated during the vertical mill grinding process is transported to the buffer box through the slag discharge pipe, and continues to accumulate and rise in the buffer box;

[0019] Step 2: Sealing adjustment: Observe the accumulated height of the slag inside the buffer box through the transparent observation window. After the slag rises and covers the slag discharge pipe, start the drive motor, which drives the spiral feed shaft to rotate, so that the slag remains relatively horizontal in the buffer box. Then loosen the two fastening nuts, adjust the height of the adjustment plate up and down, and adjust the height of the adjustment cylinder inside the buffer box. When it moves to a certain height above the bottom of the slag discharge pipe, tighten the two fastening nuts to fix the position of the adjustment cylinder.

[0020] Step 3, slag discharge: As the slag accumulates and rises, the slag contacts the bottom of the regulating cylinder. At this time, the slag rises in the regulating cylinder as the spiral feeding shaft rotates, and is transported to the conveying mechanism through the telescopic sleeve, and the conveying mechanism transports the slag;

[0021] Step 4: Clearing: When it is necessary to discharge the slag inside the buffer box, open the sealing cover and discharge the slag inside the buffer box.

[0022] (III) Beneficial effects

[0023] The present invention provides a convenient vertical mill slag discharge port sealing device and sealing method, which has the following beneficial effects:

[0024] (1) The convenient vertical mill slag discharge port sealing device and sealing method utilize a buffer box to temporarily carry the slag. As the slag is discharged, the driving motor drives the spiral feed shaft to rotate so that the slag can submerge the slag discharge pipe, thereby achieving sealing of the slag discharge pipe. In this case, when the slag rises to contact the bottom of the regulating cylinder, the spiral feed shaft will transport the slag to the telescopic sleeve, and then transport it to the external soil slag bucket elevator through the conveying mechanism, and then send it back to the vertical mill for re-grinding.

[0025] (2) The convenient vertical mill slag discharge port sealing device and sealing method utilize the setting of a threaded column and two fastening nuts. After loosening the two fastening nuts, the position of the adjustment plate on the threaded column can be adjusted. After the adjustment, the adjustment plate can be stably clamped and limited by tightening the two fastening nuts, thereby making the height of the adjustment cylinder in the buffer box adjustable, which is more convenient to use.

[0026] (3) The convenient vertical mill slag discharge port sealing device and sealing method utilize the coordinated arrangement of the guide tube, the transfer tube and the installation sleeve to enable the telescopic sleeve to have a telescopic function, so that when the adjusting tube drives the guide tube to move up and down and maintain stability, the slag in the adjusting tube can be effectively transported to the conveying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the external structure of the front half of the box body of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal structure of the rear half box of the present invention;

[0031] Figure 5It is a structural schematic diagram of the telescopic sleeve of the present invention;

[0032] In the figure, 1. slag discharge pipe; 2. buffer box; 3. conveying mechanism; 4. adjusting cylinder; 5. adjusting plate; 6. adjusting limit assembly; 7. spiral feed shaft; 8. bracket; 9. driving motor; 10. telescopic sleeve; 11. threaded column; 12. auxiliary rod; 13. fastening nut; 14. guide tube; 15. transfer tube; 16. mounting sleeve; 17. front half box; 18. rear half box; 19. first semicircular notch; 20. second semicircular notch; 21. transparent observation window; 22. supporting foot; 23. guide semi-cylinder; 24. sealing cover. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-5 The embodiment of the present invention provides a technical solution: a convenient vertical mill discharge port sealing device, comprising a discharge pipe 1, a buffer box 2 connected to the discharge pipe 1 and a conveying mechanism 3, wherein the conveying mechanism 3 is as shown in the attached Figure 2 As shown, it is made of a sealed box structure with a built-in conveyor belt, which is a conventional technical means in vertical mill processing and will not be described in detail in this article.

[0035] As a preferred solution, Figure 1 As shown, the buffer box 2 includes a front half box body 17 and a rear half box body 18, and a plurality of ear plates are fixedly connected to the top of the front half box body 17 and the rear half box body 18, and the two fitting ear plates are fixedly connected by bolts and nuts, and supporting feet 22 are fixedly connected around the bottom of the front half box body 17 and the rear half box body 18, and two adjacent supporting feet 22 at the bottom of the front half box body 17 and the rear half box body 18 are fixedly connected by bolts and nuts, thereby ensuring the tightness of the connection between the front half box body 17 and the rear half box body 18.

[0036] As a preferred solution, an adjustment cylinder 4 is slidably installed on the left side of the top of the buffer box 2, as described in detail in the attached Figure 3 and attached Figure 4 As shown, the tops of the opposite sides of the front half box 17 and the rear half box 18 are provided with a first semicircular notch 19 and a second semicircular notch 20 adapted to the adjusting cylinder 4 and the slag discharge pipe 1 from left to right, wherein the two first semicircular notches 19 constitute a circular hole adapted to the adjusting cylinder 4, and the two second semicircular notches 20 constitute a circular hole adapted to the slag discharge pipe 1.

[0037] As a preferred solution, an adjustment plate 5 is fixedly installed on the front of the adjustment cylinder 4 and above the buffer box 2, and an adjustment limit assembly 6 adapted to the adjustment plate 5 is fixedly connected to the top of the front half box 17. As a detailed description, as shown in the attached Figure 1 and attached Figure 3 As shown, the adjustment limit assembly 6 includes a threaded column 11 and an auxiliary rod 12, the bottom ends of the threaded column 11 and the auxiliary rod 12 are fixedly mounted on the top of the front half box 17, and the top ends of the threaded column 11 and the auxiliary rod 12 pass through the adjustment plate 5 and extend to the top of the adjustment plate 5, and the outer surface of the threaded column 11 and the upper and lower sides of the adjustment plate 5 are threadedly connected with fastening nuts 13.

[0038] As a detailed description, by adjusting the position of the fastening nut 13 , the height of the adjustment plate 5 on the threaded column 11 can be adjusted, thereby achieving convenient adjustment of the height of the adjustment tube 4 .

[0039] As a preferred solution, a spiral feed shaft 7 is rotatably installed inside the adjusting cylinder 4, and the top of the spiral feed shaft 7 passes through the adjusting cylinder 4 and extends to the top of the adjusting cylinder 4. The front and rear sides of the top of the buffer box 2 and the outer periphery of the adjusting cylinder 4 are fixedly connected with a bracket 8 by bolts, and a driving motor 9 is fixedly installed on the top of the bracket 8. Figure 1 and attached Figure 2 As shown, the two rear uprights in the bracket 8 are fixedly installed on the top of the rear half box 18 by bolts, and the two front uprights in the bracket 8 are fixedly installed on the top of the front half box 17 by bolts. After the drive motor 9 is fixedly installed on the mounting plate of the bracket 8, the output shaft of the drive motor 9 passes through the circular hole, and the bottom end of the output end of the drive motor 9 is fixedly connected to the top end of the spiral feed shaft 7 through a coupling.

[0040] In order to realize the conveying of the slag in the adjusting cylinder 4 , a telescopic sleeve 10 is connected to the left side of the adjusting cylinder 4 , and one end of the telescopic sleeve 10 away from the adjusting cylinder 4 is fixed to the top of the conveying mechanism 3 and communicated with the inside of the conveying mechanism 3 .

[0041] As detailed in the attached Figure 1 and attached Figure 5 As shown, the telescopic sleeve 10 includes a guide tube 14, a transfer tube 15 is sleeved and slidably installed on the outer periphery of the guide tube 14, a mounting sleeve 16 is sleeved and slidably installed on the outer periphery of the transfer tube 15, the guide tube 14 is connected to and fixedly installed on the left side of the adjustment tube 4, and the mounting sleeve 16 is connected to and fixedly installed on the top of the conveying mechanism 3.

[0042] In order to realize convenient understanding of the height of the slag inside the buffer box 2 , transparent observation windows 21 are provided on both the left and right sides of the front side of the front half box body 17 .

[0043] In order to ensure that all slag materials in the buffer box 2 can be discharged when needed, the bottoms of the front half box 17 and the rear half box 18 are both connected with material guiding semi-cylinders 23, and the bottoms of the outer circumferences of the two material guiding semi-cylinders 23 are threadedly connected with sealing covers 24.

[0044] The above-mentioned sealing method of a convenient vertical mill slag discharge port sealing device specifically comprises the following steps:

[0045] Step 1: Material guiding: The slag generated during the vertical mill grinding process is transported to the buffer box 2 through the slag discharge pipe 1, and continuously accumulates and rises in the buffer box 2;

[0046] Step 2, seal adjustment: observe the cumulative height of the slag inside the buffer box 2 through the transparent observation window 21. After the slag rises and submerges the slag discharge pipe 1, start the drive motor 9, which drives the spiral feed shaft 7 to rotate, so that the slag remains relatively horizontal in the buffer box 2. Then loosen the two fastening nuts 13, adjust the height of the adjustment plate 5 up and down, and adjust the height of the adjustment tube 4 inside the buffer box 2. When it moves to a certain height above the bottom of the slag discharge pipe 1, tighten the two fastening nuts 13 to fix the position of the adjustment tube 4.

[0047] Step 3, slag discharge: As the slag material accumulates and rises, the slag material contacts the bottom of the regulating cylinder 4. At this time, the slag material rises in the regulating cylinder 4 as the spiral feeding shaft 7 rotates, and is transported to the conveying mechanism 3 through the telescopic sleeve 10. The conveying mechanism 3 transports the slag material;

[0048] Step 4: Clearing: When it is necessary to discharge the slag in the buffer box 2 , open the sealing cover 24 to discharge the slag in the buffer box 2 .

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable vertical mill discharge port sealing device, comprising a discharge pipe (1), a buffer box (2) connected to the discharge pipe (1), and a conveying mechanism (3), characterized in that: An adjusting cylinder (4) is penetrated and slidably installed on the left side of the top of the buffer box (2); an adjusting plate (5) is fixedly installed on the front of the adjusting cylinder (4) and located above the buffer box (2); and an adjusting limit assembly (6) adapted to the adjusting plate (5) is fixedly connected to the top of the buffer box (2); a spiral feed shaft (7) is rotatably installed inside the adjusting cylinder (4); the top end of the spiral feed shaft (7) penetrates the adjusting cylinder (4) and extends to the top of the adjusting cylinder (4); a bracket (8) is fixedly connected by bolts on the front and rear sides of the top of the buffer box (2) and located on the outer periphery of the adjusting cylinder (4); a driving motor (9) is fixedly installed on the top of the bracket (8); the bottom end of the output end of the driving motor (9) is fixedly connected to the top end of the spiral feed shaft (7) through a coupling; a telescopic sleeve (10) is connected to the left side of the adjusting cylinder (4); and the end of the telescopic sleeve (10) away from the adjusting cylinder (4) is fixed to the top of the conveying mechanism (3) and is connected to the inside of the conveying mechanism (3); The adjustment limit assembly (6) comprises a threaded column (11) and an auxiliary rod (12), the bottom ends of the threaded column (11) and the auxiliary rod (12) are fixedly mounted on the top of the buffer box (2), and the top ends of the threaded column (11) and the auxiliary rod (12) penetrate the adjustment plate (5) and extend to the top of the adjustment plate (5), and the outer surface of the threaded column (11) and the upper and lower sides of the adjustment plate (5) are threadedly connected with fastening nuts (13); The telescopic sleeve (10) comprises a guide tube (14), a transfer tube (15) is sleeved and slidably mounted on the outer circumference of the guide tube (14), and a mounting sleeve (16) is sleeved and slidably mounted on the outer circumference of the transfer tube (15); The guide tube (14) is connected to and fixedly mounted on the left side of the adjustment cylinder (4), and the mounting sleeve (16) is connected to and fixedly mounted on the top of the conveying mechanism (3); The buffer box (2) comprises a front half box body (17) and a rear half box body (18), wherein the front half box body (17) and the rear half box body (18) are fixedly connected by bolts and nuts, and the tops of opposite sides of the front half box body (17) and the rear half box body (18) are provided with a first semicircular notch (19) and a second semicircular notch (20) adapted to the regulating cylinder (4) and the slag discharge pipe (1) in sequence from left to right.

2. A portable vertical mill slag discharge port sealing device according to claim 1, characterized in that: Transparent observation windows (21) are provided on both left and right sides of the front face of the front half box (17), and supporting feet (22) are fixedly connected around the bottoms of the front half box (17) and the rear half box (18), and two adjacent supporting feet (22) at the bottoms of the front half box (17) and the rear half box (18) are fixedly connected by bolts and nuts.

3. The portable vertical mill slag discharge port sealing device according to claim 1, characterized in that: The bottoms of the front half box (17) and the rear half box (18) are both connected to a material guiding semi-cylinder (23), and the bottoms of the outer circumferences of the two material guiding semi-cylinders (23) are threadedly connected to sealing covers (24).

4. The portable vertical mill slag discharge port sealing device according to claim 2, characterized in that: The sealing method of the portable vertical mill slag discharge port sealing device specifically comprises the following steps: Step 1: Material guiding: the slag generated during the grinding process of the vertical mill is transported to the buffer box (2) through the slag discharge pipe (1), and continuously accumulates and rises in the buffer box (2); Step 2: Sealing adjustment: Observe the accumulated height of the slag inside the buffer box (2) through the transparent observation window (21). After the slag rises and submerges the slag discharge pipe (1), start the drive motor (9). The drive motor (9) drives the spiral feed shaft (7) to rotate so that the slag remains relatively horizontal in the buffer box (2). Then, loosen the two fastening nuts (13) and adjust the height of the adjustment plate (5) up and down to adjust the height of the adjustment tube (4) inside the buffer box (2). When the adjustment tube (4) moves to a certain height above the bottom of the slag discharge pipe (1), tighten the two fastening nuts (13) to fix the position of the adjustment tube (4). Step 3, slag discharge: As the slag material accumulates and rises, the slag material contacts the bottom of the regulating cylinder (4). At this time, the slag material rises in the regulating cylinder (4) as the spiral conveying shaft (7) rotates, and is conveyed to the conveying mechanism (3) through the telescopic sleeve (10). The conveying mechanism (3) conveys the slag material. Step 4: clearing the material: when it is necessary to discharge the slag material inside the buffer box (2), open the sealing cover (24) and discharge the slag material inside the buffer box (2).

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