Auxiliary opening device for milling door of ball mill

Abstract

The utility model relates to an auxiliary opening device for a milling door of a ball mill, which comprises a mounting bracket arranged outside a shell of the ball mill and positioned on the periphery of the milling door, the mounting bracket comprises a mounting plate, two butt joint frames and fastening nuts, and the two butt joint frames are respectively fixed at two ends of one side of the mounting plate; one side, far away from the mounting plate, of the butt joint frame sleeves the surface of the ball mill shell, is positioned on shell bolts on two sides of the mill door, and is fixed on the surface of the ball mill shell through fastening nuts matched with the shell bolts; a hydraulic cylinder used for ejecting the grinding door is arranged on the side, facing the grinding door, of the mounting plate through a fastener. In the milling door opening operation, inward thrust is applied to the milling door through the hydraulic cylinder until the milling door is jacked down, so that manual knocking and vibration opening with a sledge hammer are replaced, the labor intensity of workers in the milling door opening operation is reduced, and the probability of occurrence of personal injury accidents in the operation process is greatly reduced; and the mounting bracket can be quickly detached from the ball mill shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball mills in cement and other industrial enterprises, and particularly relates to an auxiliary opening device for a grinding door of a ball mill. Background Art

[0002] In cement and other industrial enterprises, ball mill is one of the most commonly used equipment, but ball mill needs regular maintenance, and maintenance usually requires opening the mill door.

[0003] However, there may be a tight seal design between the mill door and the casing to ensure that no material leakage occurs during the operation of the ball mill. This tight seal makes it difficult to open the mill door directly when it needs to be opened due to the friction and resistance of the seal.

[0004] Secondly, the grinding door may become stuck or slightly deformed at the connection with the housing due to long-term use or improper operation. In this case, it is difficult to open the grinding door directly by hand or with conventional tools.

[0005] Therefore, most companies still use a sledgehammer to vibrate and knock the grinding door manually. By knocking the grinding door with a hammer, the seal can be vibrated and loosened, reducing friction resistance, making it easier to open the grinding door. Moreover, hammering the grinding door can provide enough impact force to help overcome the resistance caused by sticking or deformation, so that the grinding door can be opened.

[0006] However, this type of operation places heavy workload on workers and the operation process is relatively dangerous. Utility Model Content

[0007] The utility model aims to provide an auxiliary opening device for a grinding door of a ball mill, so as to solve the above problems existing in the prior art.

[0008] The technical problem to be solved by the utility model is to provide

[0009] The technical solution of the utility model to solve the above technical problems is as follows:

[0010] An auxiliary opening device for a grinding door of a ball mill comprises a mounting bracket arranged outside the ball mill shell and located at the periphery of the grinding door, the mounting bracket comprises a mounting plate, a docking frame and a fastening nut, the docking frame is provided with two and respectively fixed at two ends of one side of the mounting plate, the docking frame is sleeved on the surface of the ball mill shell and on the shell bolts located on both sides of the grinding door on the side away from the mounting plate, and is fixed to the surface of the ball mill shell by the fastening nuts matching the shell bolts; a hydraulic cylinder for pushing down the grinding door is provided on the side of the mounting plate facing the grinding door through a fastener.

[0011] The beneficial effect of the utility model is that during the mill door opening operation, the docking frame is passed through the shell bolts on the surface of the ball mill shell and located on both sides of the mill door, and then the fastening nut is screwed into the shell bolts passing through one side wall of the docking frame, thereby completing the installation of the mounting bracket. After the hydraulic cylinder is installed through the fastener, the hydraulic cylinder applies an inward thrust to the mill door until the mill door is pushed down, thereby replacing manual knocking and vibration with a sledgehammer to open it, thereby effectively reducing the labor intensity of personnel during the mill door opening operation, and can greatly reduce the probability of personal injury accidents during the operation, and when the mill door is opened, the mounting bracket can also be quickly removed from the ball mill shell.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, a side of the docking frame close to the ball mill housing is an arc surface, and the arc is adapted to the surface of the ball mill housing.

[0014] Furthermore, the fastening nut is an octagonal prism-shaped nut, and a fastening hole is provided on each side wall of the fastening nut.

[0015] Further, the fastener includes a pull plate, a pull rod, a butt plate and a sliding lock, wherein a circular opening is provided at the center of the mounting plate for the fixed end of the hydraulic cylinder to pass through, the pull plate is sleeved on the movable end of the hydraulic cylinder and butts against the fixed end of the hydraulic cylinder, two pull rods are provided, the two pull rods are distributed on both sides of the hydraulic cylinder and welded to a side wall of the pull plate facing the mounting plate,

[0016] The abutment plate is welded to the side of the mounting plate away from the docking frame and completely closes the circular opening. The other end of the pull rod moves through the mounting plate and the abutment plate. The sliding lock is arranged on the side of the abutment plate away from the mounting plate to lock the pull rod.

[0017] Furthermore, the sliding lock comprises two sliding frames symmetrically welded on the side of the abutment plate away from the mounting plate, and also comprises two sliding bolts, which are arranged in opposite directions and move through the two sliding frames respectively, and the pull rod is provided with a locking hole matching the sliding bolts.

[0018] Furthermore, the sliding bolt is "L"-shaped, and magnetic blocks are installed on opposite sides of the two sliding bolts, and the opposite sides of the two magnetic blocks are at the same level. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model from a front perspective;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model from a rear-view perspective;

[0021] Figure 3 This is a schematic diagram of the fastening nut structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the pull plate and pull rod structure of the utility model;

[0023] Figure 5 This is an enlarged schematic diagram of the connection relationship between the pull rod, the sliding frame and the sliding bolt of the utility model;

[0024] Figure 6 This is a schematic diagram of the use of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Mounting bracket; 11. Mounting plate; 12. Docking frame; 13. Fastening nut; 14. Fastening hole; 2. Hydraulic cylinder; 3. Fastener; 31. Pull plate; 32. Pull rod; 321. Lock hole; 33. Butt plate; 34. Sliding frame; 35. Sliding bolt; 36. Magnetic block; 4. Ball mill housing; 5. Housing bolt; 6. Grinding door. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] See also Figure 1-6 , Embodiment 1 of the utility model, an auxiliary opening device for a grinding door of a ball mill, comprises a mounting bracket 1 arranged outside a ball mill housing 4 and located at the periphery of a grinding door 6, the mounting bracket 1 comprises a mounting plate 11, a docking frame 12 and a fastening nut 13, two docking frames 12 are provided and are respectively fixed at two ends of one side of the mounting plate 11, a side of the docking frame 12 away from the mounting plate 11 is sleeved on the surface of the ball mill housing 4 and located on housing bolts 5 on both sides of the grinding door 6, and is fixed to the surface of the ball mill housing 4 by fastening nuts 13 matching the housing bolts 5; a hydraulic cylinder 2 for pushing down the grinding door 6 is provided on the side of the mounting plate 11 facing the grinding door 6 through a fastener 3.

[0029] like Figure 6As shown, during the operation of opening the grinding door 6, the docking frame 12 is passed through the housing bolts 5 on the surface of the ball mill housing 4 and located on both sides of the grinding door 6, and then the fastening nut 13 is screwed into the housing bolts 5 passing through the side wall of the docking frame 12, thereby completing the installation of the mounting bracket 1. After the hydraulic cylinder 2 is installed through the fastener 3, the hydraulic cylinder 2 applies an inward thrust to the grinding door 6 until the grinding door 6 is pushed down, thereby replacing manual knocking and vibration with a sledgehammer to open it, thereby effectively reducing the labor intensity of personnel during the operation of opening the grinding door 6, and can greatly reduce the probability of personal injury accidents during the operation, and when the grinding door 6 is opened, the mounting bracket 1 can also be quickly removed from the ball mill housing 4.

[0030] Embodiment 2 of the present utility model is an auxiliary opening device for a ball mill door. Based on embodiment 1, a side of a docking frame 12 close to a ball mill housing 4 is an arc surface, and the arc is adapted to the surface of the ball mill housing 4.

[0031] The arc surface design on one side of the docking frame 12 can better fit the arc surface of the ball mill housing 4, so that the installation bracket 1 can be installed more stably.

[0032] Embodiment 3 of the present utility model is an auxiliary opening device for a ball mill door. Based on any one of embodiments 1 to 2, the fastening nut 13 is an octagonal prism nut, and a fastening hole 14 is provided on each side wall of the fastening nut 13 .

[0033] The octagonal prism-shaped nut is used and the fastening holes 14 are provided on each surface, so that the worker can more easily insert the lever into the fastening hole 14 and rotate the fastening nut 13 when the knob fastens the nut 13 .

[0034] Embodiment 4 of the present utility model is an auxiliary opening device for a grinding door of a ball mill. Based on any one of embodiments 1 to 3, the fastener 3 includes a pull plate 31, a pull rod 32, a stop plate 33 and a sliding lock.

[0035] Among them, a circular opening is opened at the center position of the mounting plate 11 for the fixed end of the hydraulic cylinder 2 to pass through, the pull plate 31 is sleeved on the movable end of the hydraulic cylinder 2 and rests on the fixed end of the hydraulic cylinder 2, and two pull rods 32 are provided. The two pull rods 32 are distributed on both sides of the hydraulic cylinder 2 and welded to the side wall of the pull plate 31 facing the mounting plate 11.

[0036] The butt plate 33 is welded to the side of the mounting plate 11 away from the docking frame 12 and completely closes the circular opening. The other end of the pull rod 32 moves through the mounting plate 11 and the butt plate 33. The sliding lock is arranged on the side of the butt plate 33 away from the mounting plate 11 to lock the pull rod 32.

[0037] When installing the hydraulic cylinder 2, insert the fixed end of the hydraulic cylinder 2 into the circular opening, and then pass the pull plate 31 through the movable end of the hydraulic cylinder 2 until it rests on the access surface between the movable end and the fixed end of the hydraulic cylinder 2. During this process, the pull rod 32 passes through the mounting plate 11 and the abutment plate 33, and finally the pull rod 32 is locked by sliding the lock, so that the hydraulic cylinder 2 can be quickly disassembled and assembled.

[0038] Embodiment 5 of the utility model is an auxiliary opening device for a ball mill door. Based on any one of embodiments 1 to 4, the sliding lock comprises two sliding frames 34 symmetrically welded on the side of the abutment plate 33 away from the mounting plate 11, and also comprises two sliding bolts 35. The two sliding bolts 35 are arranged in opposite directions and move through the two sliding frames 34 respectively. The pull rod 32 is provided with a lock hole 321 matching the sliding bolts 35.

[0039] A simple sliding bolt structure is used to lock the pull rod 32, which is easy and quick to operate.

[0040] Embodiment 6 of the present utility model is an auxiliary opening device for a ball mill door. Based on any one of embodiments 1 to 5, the sliding bolt 35 is "L"-shaped, and magnetic blocks 36 are installed on the opposite sides of the two sliding bolts 35, and the opposite sides of the two magnetic blocks 36 are at the same level.

[0041] By installing the magnetic blocks 36 and placing the two magnetic blocks 36 at the same level on opposite sides, the two magnetic blocks 36 can be made to repel each other, thereby preventing the sliding bolt 35 from automatically sliding out of the locking hole 321 of the pull rod 32 .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary opening device for a ball mill door, characterized in that: The invention comprises a mounting bracket (1) arranged outside a ball mill housing (4) and located outside a grinding door (6), the mounting bracket (1) comprising a mounting plate (11), a docking frame (12) and a fastening nut (13), two docking frames (12) are provided and are respectively fixed at two ends of one side of the mounting plate (11), the docking frame (12) is sleeved on the surface of the ball mill housing (4) and on housing bolts (5) located on both sides of the grinding door (6) on the side away from the mounting plate (11), and is fixed to the surface of the ball mill housing (4) by means of the fastening nuts (13) matching the housing bolts (5); the side of the mounting plate (11) facing the grinding door (6) is provided with a hydraulic cylinder (2) for pushing down the grinding door (6) through a fastener (3).

2. The auxiliary opening device for a ball mill door according to claim 1, characterized in that: The side of the docking frame (12) close to the ball mill housing (4) is an arc surface, and the arc is adapted to the surface of the ball mill housing (4).

3. The auxiliary opening device for a ball mill door according to claim 1, characterized in that: The fastening nut (13) is an octagonal prism-shaped nut, and a fastening hole (14) is provided on each side wall of the fastening nut (13).

4. The auxiliary opening device for a ball mill door according to claim 1, characterized in that: The fastener (3) comprises a pull plate (31), a pull rod (32), a stop plate (33) and a sliding lock. A circular opening is provided at the center of the mounting plate (11) for the fixed end of the hydraulic cylinder (2) to pass through; the pull plate (31) is sleeved on the movable end of the hydraulic cylinder (2) and abuts against the fixed end of the hydraulic cylinder (2); two pull rods (32) are provided, and the two pull rods (32) are distributed on both sides of the hydraulic cylinder (2) and welded to a side wall of the pull plate (31) facing the mounting plate (11). The abutment plate (33) is welded to the side of the mounting plate (11) away from the docking frame (12) and completely closes the circular opening; the other end of the pull rod (32) moves through the mounting plate (11) and the abutment plate (33); the sliding lock is arranged on the side of the abutment plate (33) away from the mounting plate (11) to lock the pull rod (32).

5. The auxiliary opening device for a ball mill door according to claim 4, characterized in that: The sliding lock comprises two sliding frames (34) symmetrically welded on the side of the abutment plate (33) away from the mounting plate (11), and also comprises two sliding bolts (35). The two sliding bolts (35) are arranged in opposite directions and move through the two sliding frames (34) respectively. The pull rod (32) is provided with a locking hole (321) matching the sliding bolts (35).

6. The auxiliary opening device for a ball mill door according to claim 5, characterized in that: The sliding bolt (35) is L-shaped, and a magnetic block (36) is installed on the opposite side of the two sliding bolts (35), and the opposite side of the two magnetic blocks (36) are at the same level.

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