An oil tank breather device suitable for large inclination or up-down mining working conditions of a coal mining machine

Abstract

The application discloses an oil tank air-breathing device suitable for large-dip-angle or up-and-down mining working conditions of a coal mining machine, relates to the field of the oil tank air-breathing device of the coal mining machine, and comprises a tank body, a cover plate is arranged on the tank body, an air-breathing mechanism is arranged on the cover plate, and the air-breathing mechanism comprises an O-shaped rope arranged on the cover plate. In the application, gas in the oil tank enters a hose through an air inlet on the cover plate and then flows out from an air filter, so that an exhaust path adaptable to oil distribution change is formed, the gas is smoothly exhausted, the pressure balance between the inside and the outside of the hydraulic tank body is ensured, the hose and the first joint and the second joint at the exhaust port can prevent hydraulic oil from leaking out of the exhaust port, the stable operation of the hydraulic system is ensured, and the waste of the hydraulic oil is reduced. Compared with the traditional oil tank air-breathing device of the coal mining machine, the device has a wide application range and high applicability, can meet harsh working conditions of the coal mining machine in large-dip-angle or up-and-down mining, and is easy to maintain, convenient to install and low in cost.

Description

Technical Field

[0001] This application relates to the field of oil tank ventilation for coal mining machines, and in particular to an oil tank ventilation device suitable for coal mining machines operating at steep inclination angles or in elevation. Background Technology

[0002] The hydraulic system of a coal mining machine is a core component of the machine, responsible for controlling key functions such as the height adjustment system and braking system. The hydraulic oil tank is an important part of the hydraulic system, mainly responsible for storing hydraulic oil, dissipating heat, settling impurities, separating air from the oil, and ensuring the stable operation of the hydraulic system.

[0003] Existing venting devices (commonly used venting devices only have an air filter installed at the exhaust port) are mainly suitable for horizontal or shallow working face conditions. However, in underground coal mines with steep inclination angles (working face inclination > 35°) or inclining mining (±10° or more), the hydraulic oil tank tilts continuously with the coal mining machine, resulting in severely uneven distribution of hydraulic oil within the tank. This causes the exhaust port to often be below the upper oil level, leading to hydraulic oil leakage or spraying from the vent plug, resulting in hydraulic oil loss and severely impacting the continuous operating efficiency of the coal mining machine. Therefore, there is an urgent need for a hydraulic oil tank venting device suitable for coal mining machines operating under steep inclination angles or inclining mining conditions. Utility Model Content

[0004] To address the issues of blockage and oil leakage at the hydraulic oil tank vent of a coal mining machine under steep incline or steep mining conditions, this application provides an oil tank venting device suitable for such conditions.

[0005] The oil tank venting device provided in this application, which is suitable for coal mining machine with large inclination angle or steep mining conditions, adopts the following technical solution: an oil tank venting device suitable for coal mining machine with large inclination angle or steep mining conditions, includes a box body, the box body is provided with a cover plate, and the cover plate is provided with a venting mechanism.

[0006] The ventilation mechanism includes an O-ring rope on the cover plate, a first connector on the cover plate, a hose connected to the first connector, an air filter detachably installed on the housing, a second connector installed at the other end of the hose and communicating with the air filter and fixed on the air filter, a sealing gasket on the air filter, and the sealing gasket on the air filter forming a ventilation device.

[0007] By adopting the above technical solution, the stable operation of the hydraulic system is ensured and the waste of hydraulic oil is reduced. Compared with the traditional method of hydraulic oil tank venting device for coal mining machines, this device has a wide range of applications and strong applicability. It can meet the harsh working conditions of coal mining machines such as large inclination angle or pitch mining, and is easy to maintain, convenient to install, and low in cost.

[0008] Preferably, the cover plate has multiple air inlets.

[0009] By adopting the above technical solution, and by setting air inlets at different positions to adapt to the working conditions where the hydraulic oil tank of the coal mining machine is at different inclination angles, the air inlets are always located above the surface of the hydraulic oil, thus achieving the effect of air permeability.

[0010] Preferably, the hose is made of polytetrafluoroethylene or a material that is insoluble in hydraulic oil.

[0011] By adopting the above technical solution, and using a hose made of polytetrafluoroethylene (PTFE) material that is insoluble in hydraulic oil, its service life can be improved.

[0012] Preferably, the air filter is connected to a second connector of the hose via an internal threaded hole.

[0013] By adopting the above technical solution and setting a second connector, an auxiliary installation function can be achieved.

[0014] Preferably, the hose and the air inlet are connected.

[0015] By adopting the above technical solution, the hose and the air inlet are connected, allowing gas to flow.

[0016] Preferably, the air filter has a base plate at its bottom that contacts it, and corresponding side plates are fixedly installed on both sides of the base plate. Corresponding mounting plates are fixedly installed on both side plates, and corresponding mounting holes are opened on both mounting plates. Corresponding fastening bolts are screwed into both mounting holes, and both fastening bolts are threaded to the housing.

[0017] By adopting the above technical solution and setting up an installation plate, an auxiliary installation function can be achieved.

[0018] Preferably, the base plate has an installation groove, on which a rectangular plate is fixedly installed. A connecting block is fixedly installed at the bottom of the air filter in the installation groove. A clamping plate is slidably installed in the installation groove. Two sliding columns are symmetrically fixedly installed on one side of the clamping plate. One end of each of the two sliding columns passes through one side of the base plate and is fixedly installed with the same pull rod. A fixing plate is fixedly installed in the installation groove. The two sliding columns slide through the fixing plate. Corresponding springs are fixedly installed on the sides of the clamping plate and the fixing plate that are close to each other. A reinforcing groove is provided on one side of the connecting block. A reinforcing block is slidably installed in the reinforcing groove and is fixedly installed with the clamping plate.

[0019] By adopting the above technical solution, the base plate and side plates can be fixedly installed by tightening bolts. When the air filter needs to be disassembled, the pull rod is pulled outward. The pull rod moves and drives the two sliding columns to move outward, which in turn moves the clamping plate and compresses the spring. As the clamping plate moves, the reinforcing block is disengaged from the reinforcing groove, and the positioning installation of the connecting block can be released. Furthermore, the positioning installation of the air filter can also be released. Disassembly and assembly can be carried out by pulling, which facilitates the disassembly and replacement of the air filter in the future. Therefore, the convenience and flexibility of use can be further improved.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application employs a flexible hose and similar device, whereby gas inside the oil tank enters the hose through the air inlet on the cover plate and then flows out through the air filter, forming an exhaust path that adapts to changes in oil distribution. This ensures smooth gas discharge, balances the pressure inside and outside the hydraulic tank, and prevents hydraulic oil from leaking out of the exhaust port via the hose, thereby ensuring stable operation of the hydraulic system and reducing hydraulic oil waste. Compared to traditional coal mining machine hydraulic tank venting devices, this device has a wider range of applications and stronger applicability, meeting the harsh working conditions of coal mining machines such as steep inclination or pitch mining. It is also easy to maintain, convenient to install, and has a lower cost.

[0022] 2. In this application, with the cooperation of the housing, etc., when the coal mining machine is inclined at a large angle of 35° to the right, there is space in the upper right of the oil tank. Gas enters the hose through the air inlet on the right side of the cover plate. The hose is made of polytetrafluoroethylene, a material that is insoluble in hydraulic oil. Then the gas flows out of the air filter through the hose and is released to the outside. The air filter needs to have a threaded hole inside to connect the hose connector, so as to avoid the air filter (exhaust port) from being blocked and leaking oil. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an oil tank venting device applicable to coal mining machine operations with large inclination angles or steep mining conditions, according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating the air filter support structure, which is a key feature of this application.

[0025] Figure 3 This is a schematic diagram illustrating the cover plate structure, representing a key embodiment of this application.

[0026] Figure 4 This is a schematic diagram illustrating the main disassembly and assembly structure of the embodiments of this application;

[0027] Figure 5This is a partial unfolded schematic diagram illustrating the main disassembly and assembly structure in the embodiments of this application;

[0028] Reference numerals: 1. O-ring; 2. First connector; 3. Hose; 4. Cover plate; 5. Sealing gasket; 6. Air filter; 7. Second connector; 8. Housing; 9. Base plate; 10. Side plate; 11. Mounting plate; 12. Mounting hole; 13. Fastening bolt; 14. Air inlet; 15. Mounting groove; 16. Rectangular plate; 17. Connecting block; 18. Clamping plate; 19. Spring; 20. Fixing plate; 21. Sliding column; 22. Tie rod; 23. Reinforcing groove; 24. Reinforcing block. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 , Figure 3 and Figure 5 This application will be described in further detail.

[0030] This application discloses an oil tank venting device suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition.

[0031] Reference Figure 1-3 A fuel tank venting device suitable for coal mining machine with large inclination angle or steep mining conditions includes a tank body 8, a cover plate 4 on the tank body 8, a venting mechanism on the cover plate 4, and a disassembly and assembly mechanism on the venting mechanism.

[0032] The ventilation mechanism includes an O-ring 1 mounted on a cover plate 4, a first connector 2 on the cover plate 4, a hose 3 connected to the first connector 2, an air filter 6 detachably mounted on the housing 8, a second connector 7 mounted on the other end of the hose 3 and connected to the air filter 6 and fixed to the air filter 6, a sealing gasket 5 on the air filter 6, and the sealing gasket 5 mounted on the air filter 6 to form a ventilation device, multiple air inlets 14 on the cover plate 4, the hose 3 being made of polytetrafluoroethylene material insoluble in hydraulic oil, the air filter 6 being connected to the second connector 7 of the hose 3 through an internal threaded hole, and the hose 3 and the air inlets 14 being connected in a continuous manner.

[0033] During use, the gas in the oil tank enters the hose 3 through the air inlet 14 on the cover plate 4, and then flows out from the air filter 6, forming an exhaust path that can adapt to changes in oil distribution, ensuring smooth gas discharge, balancing the pressure inside and outside the hydraulic tank 8, and the hose 3, the first connector 2, and the second connector 7 at the exhaust port can prevent hydraulic oil from leaking out of the exhaust port, thereby ensuring stable operation of the hydraulic system and reducing hydraulic oil waste. Compared with the traditional coal mining machine hydraulic oil tank venting device, this device has a wide range of applications and strong applicability, can meet the harsh working conditions of coal mining machines such as large inclination angle or pitch mining, and is easy to maintain, convenient to install, and low in cost.

[0034] When the existing coal mining machine is inclined at a large angle of 35° to the right, there is space in the upper right of the oil tank 8. Gas enters the hose 3 through the air inlet on the right side of the cover plate 4. The hose 3 is made of polytetrafluoroethylene, a material that is insoluble in hydraulic oil. Then the gas flows out of the air filter 6 through the hose 3 and is released to the outside. The air filter 6 needs to have a threaded hole inside to connect to the hose 3 connector, so as to avoid the air filter 6 (exhaust port) from being blocked and leaking oil.

[0035] Reference Figure 4-5 The disassembly and assembly mechanism includes a base plate 9 located at the bottom of the air filter 6 and in contact with it. A corresponding side plate 10 is fixedly installed on both sides of the base plate 9. A corresponding mounting plate 11 is fixedly installed on each of the two side plates 10. A corresponding mounting hole 12 is opened on each of the two mounting plates 11. A corresponding fastening bolt 13 is screwed into each of the two mounting holes 12. The two fastening bolts 13 are threaded to the housing 8.

[0036] The base plate 9 has an installation groove 15, on which a rectangular plate 16 is fixedly installed. A connecting block 17 is fixedly installed at the bottom of the air filter 6 inside the installation groove 15. A clamping plate 18 is slidably installed inside the installation groove 15. Two sliding columns 21 are symmetrically fixedly installed on one side of the clamping plate 18. One end of each sliding column 21 passes through one side of the base plate 9 and is fixedly installed with the same pull rod 22. A fixing plate 20 is fixedly installed inside the installation groove 15. The two sliding columns 21 slide through the fixing plate 20. A corresponding spring 19 is fixedly installed on the side of the clamping plate 18 and the fixing plate 20 that are close to each other. A reinforcing groove 23 is provided on one side of the connecting block 17. A reinforcing block 24 is slidably installed inside the reinforcing groove 23 and is fixedly installed with the clamping plate 18.

[0037] In use, the base plate 9 and side plate 10 can be fixed by tightening the bolts 13. When the air filter 6 needs to be disassembled, the pull rod 22 is pulled outward. The pull rod 22 moves and drives the two sliding columns 21 to move outward, and the clamping plate 18 also moves and compresses the spring 19. As the clamping plate 18 moves, the reinforcing block 24 is disengaged from the reinforcing groove 23, and the positioning installation of the connecting block 17 can be released. Furthermore, the positioning installation of the air filter 6 can also be released. Disassembly and assembly can be carried out by pulling, which facilitates the disassembly and replacement of the air filter 6 in the future. Therefore, the convenience and flexibility of use can be further improved.

[0038] The implementation principle of the oil tank venting device applicable to the steep inclination or pitching mining conditions of coal mining machines in this application embodiment is as follows: During use, the gas in the oil tank enters the hose 3 through the air inlet 14 on the cover plate 4, and then flows out from the air filter 6, forming an exhaust path that can adapt to changes in oil distribution, ensuring smooth gas discharge, balancing the pressure inside and outside the hydraulic tank 8, and the hose 3, the first connector 2, and the second connector 7 at the exhaust port can prevent hydraulic oil from leaking out from the exhaust port, thereby ensuring stable operation of the hydraulic system and reducing hydraulic oil waste. Compared with the traditional coal mining machine hydraulic oil tank venting device, this device has a wide range of applications and strong applicability, can meet the harsh working conditions of coal mining machines such as steep inclination or pitching mining, and is easy to maintain, convenient to install, and low in cost.

[0039] When the existing coal mining machine is inclined at a large angle of 35° to the right, there is space in the upper right of the oil tank 8. Gas enters the hose 3 through the air inlet on the right side of the cover plate 4. The hose 3 is made of polytetrafluoroethylene, a material that is insoluble in hydraulic oil. Then the gas flows out of the air filter 6 through the hose 3 and is released to the outside. The air filter 6 needs to have a threaded hole inside to connect to the hose 3 connector, so as to avoid the air filter 6 (exhaust port) from being blocked and leaking oil.

[0040] The coal mining machine's advancing direction forms a 10° clockwise inclination angle to the left with the horizontal plane. At this time, the oil in the tank is at a 10° counterclockwise inclination angle to the left with the advancing direction of the coal mining machine. There is space in the upper left of the oil tank 8. Gas enters the hose 3 through the air inlet 14 on the left side of the cover plate 4. Then, the gas enters the air filter 6 through the hose 3 and is released to the outside, thereby achieving a pressure balance between the inside and outside of the tank 8.

[0041] In different working conditions such as steep incline or steep elevation mining, the coal mining machine can select the optimal threaded hole position on the cover plate 4 to connect the hose 3 connector. Depending on the working conditions, it can choose whether or not to connect the exhaust pipe and select the optimal air inlet 14. The cover plate 4 is symmetrically designed, which can connect the hose 3 connector and effectively allow air to enter. This ventilation device can solve the problems of oil tank blockage, oil leakage and pressure imbalance inside and outside the tank 8 caused by the oil level being higher than the air filter 6 under steep incline or steep elevation mining conditions.

[0042] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A venting device for an oil tank suitable for steep incline or steep mining operations of a coal mining machine, comprising a housing (8), characterized in that: The box (8) is provided with a cover plate (4), and the cover plate (4) is provided with a ventilation mechanism; The ventilation mechanism includes an O-ring (1) set on the cover plate (4), a first connector (2) on the cover plate (4), a hose (3) connected to the first connector (2), an air filter (6) detachably installed on the housing (8), a second connector (7) installed at the other end of the hose (3) and communicating with the air filter (6), and fixed on the air filter (6), a sealing gasket (5) on the air filter (6), and the sealing gasket (5) on the air filter (6) forming a ventilation device.

2. The oil tank venting device according to claim 1, suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition, is characterized in that: The cover plate (4) has multiple air inlets (14).

3. The oil tank venting device according to claim 1, suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition, is characterized in that: The hose (3) is made of polytetrafluoroethylene, a material that is insoluble in hydraulic oil.

4. The oil tank venting device according to claim 1, suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition, is characterized in that: The air filter (6) is connected to the second connector (7) of the hose (3) through an internal threaded hole.

5. The oil tank venting device according to claim 1, suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition, is characterized in that: The hose (3) and the air inlet (14) are connected.

6. The oil tank venting device according to claim 1, suitable for coal mining machines operating at steep inclination angles or in a steep-slope mining condition, is characterized in that: The air filter (6) has a bottom plate (9) in contact with it. The bottom plate (9) has corresponding side plates (10) fixedly installed on both sides. The two side plates (10) have corresponding mounting plates (11) fixedly installed on them. The two mounting plates (11) have corresponding mounting holes (12). The two mounting holes (12) are screwed with corresponding fastening bolts (13). The two fastening bolts (13) are threaded to the housing (8).

7. A venting device for an oil tank suitable for steep incline or steep mining conditions of a coal mining machine, as described in claim 6, is characterized in that: The base plate (9) has an installation groove (15), on which a rectangular plate (16) is fixedly installed. A connecting block (17) is fixedly installed at the bottom of the air filter (6) within the installation groove (15). A clamping plate (18) is slidably installed within the installation groove (15). Two sliding columns (21) are symmetrically fixedly installed on one side of the clamping plate (18). One end of each sliding column (21) penetrates one side of the base plate (9) and is fixedly installed with a [missing information - likely a type of bracket or bracket]. A pull rod (22) is provided. A fixing plate (20) is fixedly installed in the mounting groove (15). Two sliding columns (21) slide through the fixing plate (20). A corresponding spring (19) is fixedly installed on the side of the clamping plate (18) and the fixing plate (20) that are close to each other. A reinforcing groove (23) is provided on one side of the connecting block (17). A reinforcing block (24) is slidably installed in the reinforcing groove (23). The reinforcing block (24) is fixedly installed with the clamping plate (18).

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