Split access door system of large tower mill

Abstract

The utility model discloses a split access door system of a large tower mill. The split access door system is characterized in that barrel hinge plates are mounted on two sides of a barrel door frame; the access door comprises a left door plate, a right door plate and a cover plate, the left door plate and the right door plate are symmetrically distributed, door hinge plates are mounted on one sides of the left door plate and the right door plate, and two sides of the cover plate are fixedly connected with the left door plate and the right door plate through mounting holes respectively; the pin shaft is installed on the barrel hinge plate through the thrust self-aligning roller bearing, and the door hinge plate is installed on the outer side of the pin shaft. An original whole access door is divided into three parts, a left door plate and a right door plate are hinged to a barrel door frame through pin shafts respectively, two thrust self-aligning roller bearings penetrate into each pin shaft, and in the opening and closing process of the access door, the thrust self-aligning roller bearings play a role in reducing friction and reducing resistance transition; the split access door effectively reduces the weight of a single access door and the friction torque of a cantilever, so that the difficulty in the opening and closing process of the access door of the large tower mill is reduced, the difficulty intensity of workers is reduced, and the safety in the equipment overhaul process is improved.

Description

Technical Field

[0001] The utility model is a large-scale tower mill split-type maintenance door system, belonging to the technical field of tower mills. Background Art

[0002] In the field of fine grinding and ultrafine grinding, the grinding efficiency of tower mills is much higher than that of ordinary ball mills. The tower mill equipment consists of a vertically mounted cylinder, an inspection door, a spiral agitator and a power system. The power system drives the spiral agitator to move at high speed in the cylinder, thereby driving the medium and material in the cylinder to move together. The material is ground by the grinding, friction, and shearing between the material and the medium. Faced with the increasingly serious depletion of mineral resources, the increasing number of polymetallic ores, the increasingly fine embedded particle size, and the increasing output and energy consumption, the trend of large-scale and even super-large-scale development of mining equipment is becoming more and more obvious. The large-scale development of mining equipment can meet the low-cost investment and high-efficiency energy-saving integration concept of the mineral processing system grinding process.

[0003] At present, the inspection doors of large tower mills in mines adopt a single-side hinge structure. Since the weight of the entire inspection door of a large tower mill is often more than 20 tons, the heavy weight and single-cantilever inspection door structure lead to a significant increase in the opening and closing torque of the single cantilever. In addition to causing the inspection door to sink and deform, the wear and high resistance of the trunnion plate during the opening and closing process, high labor intensity, and high equipment configuration, the cantilever inspection door of a large tower mill also has certain safety hazards.

[0004] A search of CN201610705736.8, a large vertical stirred mill automatic door opening and closing system, found a door opening and closing structure with a hinged connection and a supporting hydraulic system to overcome the strong resistance and inertia of a large tower mill door opening on one side. CN202320334639.8, a vertical stirred mill door opening and closing auxiliary device, found a guide wheel and track structure to overcome the deformation and friction resistance of a single-sided door opening.

[0005] None of the above patent designs fundamentally solves the defects and safety hazards existing in the single-sided hinge switch structure of the maintenance door of the large tower mill. Utility Model Content

[0006] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0007] Large tower mill split-type inspection door system, including:

[0008] Cylinder door frame, with cylinder hinge plates installed on both sides of the cylinder door frame;

[0009] The inspection door includes a left door panel, a right door panel, and a cover panel with mounting holes on the edge areas. The left and right door panels are symmetrically distributed, and hinge plates are installed on one side of the left and right door panels. The cover panel is assembled on the left and right door panels and the cylindrical door frame by bolts;

[0010] The pin shaft is installed on the cylinder hinge plate through a thrust spherical roller bearing, and the door hinge plate is installed on the outside of the pin shaft.

[0011] Preferably, the cylindrical hinge plate comprises two plate bodies arranged one above the other, and bearing grooves are installed on opposite sides of the two plate bodies for installing thrust spherical roller bearings.

[0012] Preferably, a first sealing hose is installed between the left door panel, the right door panel and the cylindrical door frame, a second sealing hose is installed between the cover plate and the cylindrical door frame, and a third sealing hose is installed between the cover plate and the left door panel, the right door panel.

[0013] Preferably, a sealing rubber hose 4 is installed around the inspection opening of the cylinder door frame.

[0014] Preferably, threaded holes are provided on the left door panel and the right door panel;

[0015] The inspection door system also includes a door lifting system, which includes a door lifting cylinder. The door lifting cylinder is threadedly installed in the threaded hole, and the piston end of the door lifting cylinder is used to abut on the cylinder door frame.

[0016] Preferably, the top door system is provided with four groups, which are respectively installed at the top and bottom of the left door panel and the right door panel close to one end.

[0017] Preferably, guide rods are provided at the upper and lower parts of the middle portion of the cylindrical door frame, and the cover plate is slidably fitted on the guide rods;

[0018] An oil supply pump equipped with an oil tank is installed on the cylinder door frame. The oil supply pump is installed with a quick-connect joint through a hose. An oil nozzle is provided on the door-lift cylinder. The quick-connect joint is connected to the oil nozzle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The double-leaf inspection door system divides the original inspection door into three parts, namely the left door panel, the right door panel and the cover panel. The left and right inspection doors are hinged by the pin shaft and the cylindrical door frame respectively. Two thrust spherical roller bearings are inserted into each pin shaft. During the opening and closing process of the inspection door, the thrust spherical roller bearings play a transitional role in reducing friction and lowering resistance. The double-leaf inspection door effectively reduces the weight of a single inspection door and the cantilever friction torque, thereby reducing the difficulty of opening and closing the inspection door of a large tower mill, reducing the difficulty and intensity of workers, and improving the safety of the equipment maintenance process.

[0021] Due to the reduction of friction resistance during the opening and closing process of the double-leaf inspection door, a high-configuration hydraulic inspection door opening structure is no longer required. Only a simple low-tonnage top door system is needed to complete the opening and closing process of the inspection door, which greatly reduces the design and manufacturing costs of the equipment and is conducive to cost control.

[0022] Sealing hoses primarily seal the gap between the access door and the cylinder, preventing material leakage during equipment operation. The biparting access door divides the original door into three sections, re-arranging the sealing hoses. This new hose arrangement effectively seals the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is the main view of the overall structure of the utility model.

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0026] Figure 4 This is a distribution diagram of the sealing hose of the utility model.

[0027] Figure 5 This is a diagram of the internal structure of the cylindrical door frame of the present utility model.

[0028] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0029] Figure 7 This is another distribution diagram of the sealing hose of the present utility model.

[0030] Figure 8 This is a schematic diagram of the overall structure of the utility model provided with a guide rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] Examples, such as Figures 1 to 3 As shown in the figure, the large tower mill split-type inspection door system includes:

[0034] The cylindrical door frame 1 has cylindrical hinge plates 11 installed on both sides of the cylindrical door frame 1;

[0035] The inspection door 2 includes a left door panel 21, a right door panel 22, and a cover panel 23. The left door panel 21 and the right door panel 22 are symmetrically distributed. Door hinge plates 24 are installed on one side of the left door panel 21 and the right door panel 22. The cover panel 23 is assembled on the left door panel 21, the right door panel 22, and the cylindrical door frame 1 by bolts;

[0036] The pin shaft 3 is mounted on the cylinder hinge plate 11 through a thrust spherical roller bearing 31 , and the door hinge plate 24 is mounted on the outside of the pin shaft 3 .

[0037] Among them, such as Figure 2 and Figure 3 As shown, the cylindrical hinge plate 11 includes two plates arranged one above the other, and bearing grooves are installed on opposite sides of the two plates for installing thrust spherical roller bearings 31.

[0038] Among them, such as Figure 1 、 2 As shown in Figures 4 and 7, the left door panel 21, the right door panel 22, the cover plate 23, and the edge area of ​​the cylindrical door frame 1 are all provided with mounting holes for installing high-strength bolts. The high-strength bolts are used to connect and fix the inspection door 2 and the cylindrical door frame 1.

[0039] In the above embodiment, if Figure 5 、 6 As shown, threaded holes are provided in the left and right door panels 21, 22. The inspection door system also includes a door-lifting system 8, which includes a door-lifting cylinder threadedly mounted in threaded holes 81. The piston end of the door-lifting cylinder is designed to abut against the cylindrical door frame 1. The door-lifting cylinder is equipped with an oil nozzle 82. By supplying oil to the door-lifting cylinder, the piston end abuts against the cylindrical door frame 1, thereby opening the left and right door panels 21, 22. It is important to note that before this operation, the bolts on the left and right door panels 21, 22, and the cover plate 23 must be removed.

[0040] There are four groups of the top door systems 8 , which are respectively installed at the top and bottom of the left door panel 21 and the right door panel 22 close to one end.

[0041] In the above embodiment, if Figure 4 As shown, a sealing hose 1 4 is installed between the left door panel 21, the right door panel 22 and the cylindrical door frame 1, a sealing hose 2 5 is installed between the cover panel 23 and the cylindrical door frame 1, and a sealing hose 3 6 is installed between the cover panel 23 and the left door panel 21, the right door panel 22. Alternatively, as Figure 7As shown, a sealing hose 97 is installed around the inspection opening of the cylindrical door frame 1. The sealing hose achieves a seal between the inspection door 2 and the cylindrical door frame 1. Compared with the original single-leaf door sealing, the wear of the hose is greatly reduced, especially on the side close to the pin shaft 3.

[0042] In the above embodiment, if Figure 8 As shown, guide rods 12 are provided at the upper and lower parts of the middle portion of the cylindrical door frame 1, and a cover plate 23 is slidably fitted on the guide rods 12. After the bolts are released, the left door panel 21 and the right door panel 22 can be opened by supplying oil through the oil supply pump 13. When the left door panel 21 and the right door panel 22 are opened, the cover plate 23 can be opened directly along the guide rods 12. The length of the guide rods 12 is limited, and it only needs to meet the distance between the cover plate 23 and the cylindrical door frame 1 to accommodate the distance between the left door panel 21 and the right door panel 22 and the cover plate 23. In this way, the specifications of the guide rods 12 can be reduced.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. Large tower mill split-type inspection door system, characterized by include: A cylindrical door frame (1), with cylindrical hinge plates (11) installed on both sides of the cylindrical door frame (1); An inspection door (2), the inspection door (2) comprises a left door panel (21), a right door panel (22) and a cover panel (23), the left door panel (21) and the right door panel (22) being symmetrically distributed, a door hinge panel (24) being installed on one side of the left door panel (21) and the right door panel (22), and the cover panel (23) being assembled on the left door panel (21), the right door panel (22) and the cylindrical door frame (1) by means of bolts; The pin shaft (3) is mounted on the cylinder hinge plate (11) via a thrust spherical roller bearing (31), and the door hinge plate (24) is mounted on the outside of the pin shaft (3).

2. The large tower mill double-leaf inspection door system according to claim 1 is characterized in that: The cylindrical hinge plate (11) comprises two plate bodies arranged one above the other, and bearing grooves are installed on opposite sides of the two plate bodies for installing thrust spherical roller bearings (31).

3. The large tower mill split-type inspection door system according to claim 1 is characterized in that: A sealing rubber tube (4) is installed between the left door panel (21), the right door panel (22) and the cylindrical door frame (1), a sealing rubber tube (5) is installed between the cover panel (23) and the cylindrical door frame (1), and a sealing rubber tube (6) is installed between the cover panel (23) and the left door panel (21), the right door panel (22).

4. The large tower mill split-type inspection door system according to claim 1 is characterized in that: A sealing rubber hose (7) is installed on the periphery of the inspection opening of the cylinder door frame (1).

5. The large tower mill split-type inspection door system according to claim 1 is characterized in that: The left door panel (21) and the right door panel (22) are provided with threaded holes; The inspection door system further comprises a door lifting system (8), which comprises a door lifting cylinder. The door lifting cylinder is threadedly mounted in a threaded hole (81), and the piston end of the door lifting cylinder is used to abut against the cylindrical door frame (1).

6. The large tower mill split-type inspection door system according to claim 5, characterized in that: The top door system (8) is provided with four groups, which are respectively installed on the top and bottom of the left door panel (21) and the right door panel (22) close to one end.

7. The large tower mill double-leaf inspection door system according to claim 1 is characterized in that: The edge areas of the left door panel (21), the right door panel (22), the cover panel (23) and the cylindrical door frame (1) are all provided with mounting holes, and the mounting holes are used for mounting high-strength bolts.

8. The large tower mill double-leaf inspection door system according to claim 5, characterized in that: Guide rods (12) are provided at the upper and lower parts of the middle of the cylindrical door frame (1), and the cover plate (23) is slidably fitted on the guide rods (12).

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