Expansion type anti-leakage ventilation device for reduction gearbox

Abstract

The utility model relates to an expansion type anti-leakage ventilation device for a reduction gearbox, which is arranged at a ventilation hole of the reduction gearbox, is used for adsorbing and separating high-pressure oil gas foam discharged by the reduction gearbox, and is characterized by structurally comprising an expansion kettle main body with a double filtering treatment function, a connecting pipe is arranged at an air inlet in the lower portion of the expansion kettle body, the expansion kettle body is connected with an air hole of a reduction gearbox in a sealed mode through the connecting pipe, a vent pipe is arranged at an air outlet in the upper portion of the expansion kettle body, and a respirator is installed at the top of the vent pipe. A first partition plate used for buffering, shunting and pressure reducing and a second partition plate used for separating oil and gas are arranged in the expansion pot body at preset intervals from bottom to top. The oil foam separation device is reasonable and simple in structural design, and oil foam in high-pressure gas when lubricating oil of the reduction gearbox works is effectively separated, so that the purposes of oil leakage prevention and pollution prevention are achieved.

Description

Technical Field

[0001] The utility model relates to an expansion type reduction box anti-leakage and ventilation device, belonging to the technical field of reduction boxes. Background Art

[0002] The reduction box is the most common device in mechanical transmission. It reduces the speed and increases the torque through the gear transmission inside the reduction box. After a long period of operation, the reduction box will generate high temperature, which will cause the internal pressure of the reduction box to increase. The reduction box is usually equipped with air holes. The air holes can adjust the internal and external air pressure balance to allow high temperature and high pressure gas to be discharged, thereby effectively reducing the temperature inside the reduction box.

[0003] Ordinary air vents are usually made of a copper tube or a plastic tube, which will take out the oil and gas foam inside the gearbox when the gearbox is vented. At this time, the discharged oil foam will first pollute the equipment and the environment; secondly, after combining with the dust in the environment, the oil will block the breather of the gearbox, so that the air vents lose their important functions of maintaining the gearbox pressure, enhancing lubrication, reducing movement resistance and preventing high temperature. In severe cases, the internal pressure of the gearbox will be too high, damaging the gearbox oil seal, and causing the oil to leak directly, causing large-scale pollution. Utility Model Content

[0004] The utility model aims to solve the various problems mentioned above, and further provides an expansion type reduction gearbox anti-leakage and ventilation device, which separates the oil foam in the high-pressure oil and gas by increasing the buffer space and isolating and adsorbing, thereby achieving the purpose of preventing oil leakage and clogging.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] An expansion type reduction gearbox anti-leakage ventilation device is arranged at the ventilation hole of the reduction gearbox to absorb and separate the high-pressure oil and gas foam discharged from the reduction gearbox. The special feature is that its structure includes an expansion pot body with a dual filtering and processing function, a connecting pipe is arranged at the lower air inlet of the expansion pot body, and is sealed and connected to the ventilation hole of the reduction gearbox through the connecting pipe, and a ventilation pipe is arranged at the upper exhaust port of the expansion pot body, and a respirator is installed on the top of the ventilation pipe;

[0007] A first baffle plate for buffering, diverting and reducing pressure and a second baffle plate for separating oil and gas are arranged at predetermined intervals from bottom to top inside the expansion pot body.

[0008] Furthermore, the main body of the expansion pot is a cylindrical structure.

[0009] Furthermore, the first partition is configured as a strip-shaped partition with a predetermined thickness, and its structure includes a plurality of strip-shaped blocks formed at intervals on a circular plate body, and a guide channel formed between adjacent strip-shaped blocks.

[0010] Furthermore, the strip blocks are designed to be vertical or inclined with a certain inclination angle, or a combination of vertical and inclined shapes.

[0011] Furthermore, the second partition is configured as a mesh partition with a predetermined thickness, and the mesh size is set according to actual needs.

[0012] Furthermore, the inner wall of the expansion pot body is covered with oil-absorbing cotton.

[0013] The utility model is an expansion type anti-leakage and ventilation device for a reduction gearbox, which is suitable for the ventilation holes of the motor reduction gearbox of large equipment and large vehicles. By setting an expansion pot and a dual-processing function partition inside it, the buffer space is increased on the one hand, and the isolation, adsorption and separation effect is achieved on the other hand. The structural design of the utility model is reasonable and simple, and it can effectively separate the oil foam in the high-pressure gas when the reduction gearbox lubricating oil is working, thereby achieving the purpose of preventing oil leakage and pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : A schematic structural diagram of an anti-leakage and ventilation device for an expansion type reduction gearbox according to the first embodiment;

[0015] Figure 2 : The first design form of the strip block of the strip partition;

[0016] Figure 3 : The second design form of the strip block of the strip partition;

[0017] Figure 4 : The third design form of the strip blocks of the strip partitions. DETAILED DESCRIPTION

[0018] The utility model is described in detail below with reference to the accompanying drawings.

[0019] Embodiment 1

[0020] The present embodiment relates to an expansion type reducer anti-leakage and ventilation device, which is arranged at the ventilation hole of the reducer of large equipment to adsorb and separate the high-pressure oil and gas foam discharged from the reducer, thereby effectively maintaining the internal pressure of the reducer, while achieving the important functions of enhancing the lubrication effect, reducing movement resistance and preventing high temperature.

[0021] The present embodiment is an expansion type reduction gearbox anti-leakage ventilation device, which comprises an expansion pot body 2, the lower part of which is connected to the exhaust end of the reduction gearbox via a connecting pipe 1, and an air permeable pipe 5 is arranged at the upper end of the expansion pot body 2, and a respirator 6 is provided at the end of the air permeable pipe 5. The expansion pot body 2 is a cylindrical structure, and its diameter is significantly larger than the connecting pipe 1, the air permeable pipe 5 and the respirator 6. The connecting pipe 1 is threadedly connected to the exhaust end of the reduction gearbox, and the diameter of the connecting pipe 1 is larger than the diameter of the air permeable pipe 5. A circular first partition 3 and a second partition 4 are arranged in sequence from bottom to top along the direction of the gas inside the expansion pot body 2. The first partition 3 is arranged below the second partition 4, and is a strip partition, and its structure comprises a plate body with a predetermined thickness, and a plurality of strip blocks 31 are formed on the plate body at intervals, and a guide channel 32 for buffering and diversion is formed between adjacent strip blocks, and the strip blocks 31 can be designed to be vertical or inclined with a certain inclination angle, or a combination of vertical and inclined shapes. The second partition 4 is a mesh partition used to absorb oil to achieve oil-gas separation. In order to further achieve the oil-gas separation effect inside the expansion pot body 2, the inner wall of the expansion pot body 2 is also covered with oil-absorbing cotton in this embodiment.

[0022] The utility model is an expansion type reduction box anti-leakage ventilation device, and its working principle is as follows:

[0023] During operation, the high-pressure gas with foam enters the expansion pot body 2 from the inside of the reduction box through the connecting pipe 1. At this time, the high-pressure foam gas first passes through the strip partition 3 for buffering, diversion and pressure reduction, and then continues to enter the mesh partition 4 upward. The main function of the mesh partition 4 is to absorb oil and separate oil and gas. After the high-pressure gas with foam is double-treated in the expansion pot body 2, there is basically no oil foam in the gas entering the breathable pipe 5 upward, so that the gas passing through the respirator 6 will no longer carry oil foam. This fundamentally eliminates the disadvantages of oil leakage from the old-fashioned breather holes and even blockage of the respirator.

Claims

1. An expansion type reduction gearbox anti-leakage ventilation device, arranged at the ventilation hole of the reduction gearbox, for adsorbing and separating the high-pressure oil and gas foam discharged from the reduction gearbox, characterized in that its structure includes an expansion pot body with a dual filtering and processing function, a connecting pipe is arranged at the lower air inlet of the expansion pot body, and is sealed and connected to the ventilation hole of the reduction gearbox through the connecting pipe, a ventilation pipe is arranged at the upper exhaust port of the expansion pot body, and a respirator is installed on the top of the ventilation pipe; A first baffle plate for buffering, diverting and reducing pressure and a second baffle plate for separating oil and gas are arranged at predetermined intervals from bottom to top inside the expansion pot body.

2. The anti-leakage and ventilation device of an expansion type reduction gearbox according to claim 1, characterized in that: The main body of the expansion pot is a cylindrical structure.

3. The anti-leakage and ventilation device of an expansion type reduction gearbox according to claim 1, characterized in that: The first partition is configured as a strip partition with a predetermined thickness, and its structure includes a plurality of strip blocks formed at intervals on a circular plate body, and a guide channel formed between adjacent strip blocks.

4. The anti-leakage and ventilation device of an expansion type reduction gearbox as claimed in claim 3, characterized in that: The strip blocks are designed to be vertical or inclined with a certain inclination angle, or a combination of vertical and inclined shapes.

5. The anti-leakage and ventilation device of an expansion type reduction gearbox according to claim 1, characterized in that: The second partition is configured as a mesh partition with a predetermined thickness, and the mesh size is set according to actual needs.

6. The anti-leakage and ventilation device of an expansion type reduction gearbox according to claim 1, characterized in that: The inner wall of the expansion pot body is covered with oil-absorbing cotton.

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