CN220600403U - Built-in air interchanger for closed box - Google Patents
Built-in air interchanger for closed box Download PDFInfo
- Publication number
- CN220600403U CN220600403U CN202322240494.8U CN202322240494U CN220600403U CN 220600403 U CN220600403 U CN 220600403U CN 202322240494 U CN202322240494 U CN 202322240494U CN 220600403 U CN220600403 U CN 220600403U
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- ventilation pipe
- ventilation
- gear box
- built
- pipe
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- 238000009423 ventilation Methods 0.000 claims abstract description 93
- 239000010687 lubricating oil Substances 0.000 claims abstract description 16
- 238000005452 bending Methods 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 abstract description 7
- 239000000839 emulsion Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model discloses a built-in air interchanger for a closed box body, which comprises a gear box, wherein lubricating oil is injected into the gear box, an air interchanger body is arranged on the inner side wall of a shell of the gear box, the lower part of the air interchanger body penetrates through a hole site on a gear box bottom plate and then extends downwards to form an air interchanger, and the air interchanger is communicated with the outside air. The ventilation device body comprises a mounting plate, a ventilation pipe and a ventilation pipe, wherein the mounting plate is connected with the side wall of the gear box shell, the ventilation pipe is fixedly mounted on one side of the ventilation pipe near the front part of the box body, a mounting hole is formed in the other side of the mounting plate, one end of the ventilation pipe penetrates through the mounting hole, and the other end of the ventilation pipe is connected with the ventilation pipe. The utility model can effectively prevent oil leakage at part of the connecting surface or the sealing part of the box body, and can prevent oil emulsion caused by water-oil mixing after liquefying high-temperature gas, thereby influencing the service life of parts such as gear pairs, rolling bearings and the like.
Description
Technical Field
The utility model relates to a ventilation device, in particular to a built-in ventilation device for a closed box body, and belongs to the technical field of marine engineering machinery.
Background
In many construction machinery, a closed housing is often used. For the marine industry, gearboxes in deck machinery are more common. The gear box is internally provided with a gear pair, a rolling bearing and the like which are matched at high and low speeds, so that the high-speed input of a motor or a hydraulic motor is decelerated, and the effect of low-speed output is achieved, and therefore, the gear box is also called a reduction box. In order to lubricate gears in a gearbox and reduce wear of parts such as gear pairs and rolling bearings, a volume of about 1/3 of liquid lubricating oil is usually filled into the gearbox. In many gearbox designs, there is a lack of ventilation means to provide ventilation to the interior and exterior of the gearbox to achieve pressure equalization. A few gearboxes are also provided with ventilation cap devices, but are all arranged in the outer space of the box body.
In the prior art, a part of gear boxes are not provided with a ventilation device in design, after the gear boxes run for a long time, the inside of the closed box body is rubbed with each other due to the gear pair, lubricating oil and the like, the temperature and the pressure of the inside of the closed box body rise along with the friction, and the problems of oil leakage of the box body and the like are easy to occur; the pressure unbalance between the inside and the outside of airtight box has the potential safety hazard, and reduces the life of equipment easily. When the ventilation device is absent, water is formed after hot air of the box body is not timely discharged and liquefied along with temperature change of the box body, emulsion reaction is easy to occur between the water and lubricating oil in the box body, cleanliness of the lubricating oil is reduced, lubricating effect of the lubricating oil is reduced along with quality of the lubricating oil, abrasion of a gear pair and a rolling bearing during operation of a gear box is accelerated, service life of parts in the box body is influenced, and cost, resources and other various losses are brought.
While another part of the gearbox is designed with a ventilation cap arrangement, typically fitted outside the cover of the gearbox. Because of gravity, the foreign matters easily fall into the box from top to bottom, the lubricating oil brings the foreign matters into the meshing surface of the gear pair, the smoothness of the tooth surface is damaged, the mechanical property of the tooth surface is reduced, the transmission stability is affected, the tooth surface is easily subjected to failure such as pitting, gluing, abrasion and the like, and the service life is shortened. Furthermore, foreign matters in the lubricating oil enter between the rolling bodies and the inner ring and the outer ring of the rolling bearing, friction is increased, the bearing rotates poorly, pits are formed in the inner ring and the outer ring and the rolling bodies, pitting or other forms of failure are caused, and the service life is influenced. Meanwhile, as the ventilation cap device is arranged outside the box body, the ventilation cap device occupies space and affects the beauty of the product.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the built-in ventilation device for the closed box body, which has reasonable structure, is convenient to use and can meet the use requirement.
The utility model adopts the following technical scheme for solving the technical problems: the built-in air interchanger for the airtight box body comprises a gear box, lubricating oil is injected into the gear box, an air interchanger body is arranged on the inner side wall of a shell of the gear box, the lower part of the air interchanger body penetrates through a hole site on a bottom plate of the gear box and then extends downwards to form an air ventilating part, and the air ventilating part is communicated with the outside air. The ventilation device body comprises a mounting plate, a ventilation pipe and a ventilation pipe, wherein the mounting plate is connected with the side wall of the gear box shell, the ventilation pipe is fixedly mounted on one side of the ventilation pipe near the front part of the box body, a mounting hole is formed in the other side of the mounting plate, one end of the ventilation pipe penetrates through the mounting hole, and the other end of the ventilation pipe is connected with the ventilation pipe.
Furthermore, the mounting plate is transversely arranged, one side edge is welded and fixed with the inner side wall of the gear box shell, and the other side edge is provided with a mounting plate bending part extending towards the inside of the gear box, so that the cross section of the mounting plate is L-shaped.
Further, the ventilation pipe comprises a catheter and a ventilation pipe bending part at the top end of the catheter, and the catheter and the ventilation pipe bending part are integrally formed; the guide pipe is vertically fixed in the mounting plate, the bottom of the guide pipe is immersed in lubricating oil liquid of the gear box and penetrates through the bottom plate of the box body, the inner cavity of the pipe is guaranteed to be communicated with the air outside the box body, the bending part is arc-shaped, one end of the bending part is connected with the guide pipe, and the other end of the bending part extends downwards and is inserted into the ventilation pipe;
furthermore, the pipe diameter of the ventilation pipe is smaller than that of the ventilation pipe, so that the ventilation pipe can penetrate into the ventilation pipe, a gap capable of circulating gas exists between the ventilation pipe and the pipe wall of the ventilation pipe, and the gap is 1 mm-5 mm. The ventilation pipe extends into the position of 1/2 of the height of the ventilation pipe, penetrates through the bottom plate of the gear box and can be communicated with air outside the box.
Furthermore, the outer walls of the ventilation pipe and the ventilation pipe are provided with corrosion-resistant antirust layers so as to ensure the long-term requirement in a high-humidity working environment. The rust-proof layer is a stainless steel layer or a galvanized layer.
Further, the vent pipe comprises a cylindrical outer wall, one end of the length direction of the cylindrical outer wall is opened, the other end of the cylindrical outer wall is welded and fixed on the mounting plate, and a notch for draining liquid is arranged at the joint of the cylindrical outer wall and the mounting plate, so that condensed water is discharged out of the vent pipe, and liquid accumulation in the vent pipe is prevented.
Further, for convenient operation and replacement, a glass viewing window is provided on the gear box.
Compared with the prior art, the technical scheme provided by the utility model has the following advantages:
the utility model realizes ventilation function through the built-in ventilation device, mainly exchanges cold and hot air inside and outside the gear box body, and balances the atmospheric pressure inside and outside the gear box body. Because the temperature of the gearbox during operation rises for the inside air expansion of box, pressure rises, adopt this set breather can guarantee that the inside and outside pressure of box is the same, effectively prevent the oil leak of the part junction surface or the sealed department of box, can prevent simultaneously that the inside hot air of box from rust the gear. Meanwhile, the set of ventilation device timely discharges hot air in the box body out of the box body, so that the phenomenon that oil is emulsified due to mixing of water and oil after liquefaction of high-temperature gas is effectively prevented, and the service lives of parts such as a gear pair, a rolling bearing and the like are influenced.
The built-in air interchanger has the advantages of simple structure, simple and convenient installation, and convenient and quick disassembly and assembly during the later repair or part replacement of equipment. And the welding work in the installation is carried out at the stage of the steel structure, the welding is carried out after the box body is assembled, the situation that foreign matters such as welding slag and the like do not fall into the box body is guaranteed, and the cleanliness of lubricating oil in the box body is guaranteed from the aspect of the structure.
The built-in ventilation device is arranged in the box body, so that the spatial arrangement of equipment is optimized, and meanwhile, the appearance of the product is more in line with aesthetic experience. Meanwhile, the utility model adopts the design of downward exhaust, and can effectively prevent foreign matters from falling into the box body from top to bottom. Therefore, the lubricating oil can be prevented from bringing foreign matters into parts such as the gear pair, the rolling bearing and the like, and the service life of the equipment is effectively prolonged.
Drawings
Fig. 1 is a schematic view of the ventilation device according to the present utility model.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a front view of the ventilator of the present utility model.
Fig. 4 is a side view of the ventilation device of the present utility model.
Fig. 5 is a plan view of the ventilator of the present utility model.
Fig. 6 is a perspective view of the present utility model.
Description of the drawings: 1-ventilation tube, 2-ventilation tube, 3-mounting plate and 4-ventilation device body
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings:
the embodiment provides a built-in ventilation device for a closed box body, the structure of which is shown in fig. 1-6, and the built-in ventilation device comprises a ventilation device body 4, wherein the structure of the built-in ventilation device mainly comprises ventilation 1, a ventilation pipe 2 and a mounting plate 3. Because the device is built-in and needs to be arranged in the airtight box body, one part of the device needs to be soaked in lubricating oil and is in a wet working environment for a long time, the device needs to be subjected to corresponding rust-proof measures, such as stainless steel or galvanization treatment. The requirements of the ventilation pipe and the ventilation pipe are the same, and the stainless steel pipe is adopted to achieve the best effect.
Wherein, stainless steel pipe passes the round hole of mounting panel to fix on the mounting panel through welding form.
One end of the ventilation pipe is sleeved outside the stainless steel pipe, and the other end of the ventilation pipe is fixed on the mounting plate in a welding mode.
The ventilator itself is installed as a kit. When the ventilation device is integrally installed, the stainless steel pipe at the lower part of the ventilation device passes through the bottom plate of the gear box, smoothly accesses external air and then is welded on the bottom plate of the box body. And then welding one protruding side of the mounting plate on a side plate of the box body.
Thus, the whole set of built-in ventilation device realizes the necessary positioning of equipment, and the installation is completed, thereby meeting the installation requirement.
The power input part (electric motor or hydraulic motor) of the equipment is connected with the closed box body by adopting a flange and is fastened by bolts. The generated high-speed input is converted into low-speed output after being decelerated by gear pairs at all levels, so that the effect of decelerating mechanical equipment is achieved. In the working process, due to various factors such as friction and the like, hot air generated in the box body is discharged to the outside of the box body from the bottom of the box body through a pipeline on the built-in ventilation device designed at the time, and the atmospheric pressure in the box body and the outside of the box body is balanced along with the discharge of the hot air.
The built-in ventilation device designed in this way can completely realize the use requirement of users on the ventilation device.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the specific embodiments described above, and that the above specific embodiments and descriptions are provided for further illustration of the principles of the present utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the claims and their equivalents.
Claims (9)
1. A built-in breather for airtight box, its characterized in that: the gear box is internally filled with lubricating oil, the inner side wall of the shell of the gear box is provided with a ventilation device body, the lower part of the ventilation device body penetrates through a hole site on a gear box bottom plate and then extends downwards to form a ventilation part, and the ventilation part is communicated with the outside air; the ventilation device body comprises a mounting plate, a ventilation pipe and a ventilation pipe, wherein the mounting plate is connected with the side wall of the gear box shell, the ventilation pipe is fixedly mounted on one side of the ventilation pipe near the front part of the box body, a mounting hole is formed in the other side of the mounting plate, one end of the ventilation pipe penetrates through the mounting hole, and the other end of the ventilation pipe is connected with the ventilation pipe.
2. The built-in ventilator for a closed casing according to claim 1, wherein: the mounting plate is transversely arranged, one side edge is fixedly welded with the inner side wall of the gear box shell, and the other side edge is provided with a mounting plate bending part extending towards the inside of the gear box, so that the cross section of the mounting plate is L-shaped.
3. The built-in ventilator for a closed casing according to claim 1, wherein: the ventilation pipe comprises a catheter and a ventilation pipe bending part at the top end of the catheter, and the catheter and the ventilation pipe bending part are integrally formed; the guide pipe is vertically fixed in the mounting plate, and the bottom of the guide pipe is immersed in lubricating oil liquid of the gear box; the bending part is arc-shaped, one end of the bending part is connected with the catheter, and the other end of the bending part extends downwards and is inserted into the ventilation pipe.
4. A built-in ventilator for a closed casing according to claim 3, wherein: the ventilation pipe extends into the position of 1/2 of the height of the ventilation pipe and penetrates through the bottom plate of the gear box, so that the inner cavity of the ventilation pipe is communicated with the air outside the box.
5. The built-in ventilator for a closed casing according to claim 1, wherein: the vent pipe comprises a cylindrical outer wall, one end of the cylindrical outer wall in the length direction is open, the other end of the cylindrical outer wall is welded and fixed on the mounting plate, and a notch for draining liquid is formed at the joint of the cylindrical outer wall and the mounting plate.
6. The built-in ventilator for a closed casing according to claim 5, wherein: the pipe diameter of the ventilation pipe is smaller than that of the ventilation pipe, so that the ventilation pipe can penetrate into the ventilation pipe, and a gap capable of circulating gas exists between the pipe walls of the ventilation pipe and the ventilation pipe.
7. The built-in ventilator for a closed casing according to claim 6, wherein: the gap is 1 mm-5 mm.
8. The built-in ventilator for a closed casing according to claim 1, wherein: the outer walls of the ventilation pipe and the ventilation pipe are respectively provided with a corrosion-resistant rust-proof layer, and the rust-proof layers are stainless steel layers or galvanized layers.
9. The built-in ventilator for a closed casing according to claim 1, wherein: and a glass observation window is arranged on the gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322240494.8U CN220600403U (en) | 2023-08-18 | 2023-08-18 | Built-in air interchanger for closed box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322240494.8U CN220600403U (en) | 2023-08-18 | 2023-08-18 | Built-in air interchanger for closed box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220600403U true CN220600403U (en) | 2024-03-15 |
Family
ID=90182047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322240494.8U Active CN220600403U (en) | 2023-08-18 | 2023-08-18 | Built-in air interchanger for closed box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220600403U (en) |
-
2023
- 2023-08-18 CN CN202322240494.8U patent/CN220600403U/en active Active
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