CN218094144U - Novel speed reducer of leak protection oil is ventilated device - Google Patents
Novel speed reducer of leak protection oil is ventilated device Download PDFInfo
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- CN218094144U CN218094144U CN202222111219.1U CN202222111219U CN218094144U CN 218094144 U CN218094144 U CN 218094144U CN 202222111219 U CN202222111219 U CN 202222111219U CN 218094144 U CN218094144 U CN 218094144U
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Abstract
A novel speed reducer of leak protection oil is ventilated device, it includes: the oil-gas exhausting device comprises a mounting flange, a hole plate type short circuit and an expansion type shell, wherein the hole plate type short circuit, the zigzag labyrinth short circuit, the oil blocking short circuit and the central oil return short circuit are arranged inside the shell, a C-type air filter is further arranged on the upper portion of the shell, and oil carried in the exhausting process flows back to the speed reducer through the blocking of the short circuits and the filtering of the C-type air filter and finally flows back to the speed reducer through an oil return pipe. The utility model discloses a speed reducer ventilation unit utilizes the advantage that C type air cleaner is general, easily acquireed to compensate the not enough of conventional C type air cleaner's easy oil leak. The device is particularly suitable for the working condition that a speed reducer of a dynamic separator similar to a coal mill runs in a dust environment and sealed air is introduced. The speed reducer under the working condition can smoothly exhaust and effectively prevent lubricating oil from splashing or being discharged along with gas to pollute the environment.
Description
Technical Field
The utility model relates to a speed reducer ventilation technical field, concretely relates to novel speed reducer of leak protection oil ventilation device.
Background
In the running process of the speed reducer, the gear pair rotates at a high speed to stir lubricating oil, so that the lubricating oil level is changed in height fluctuation and the oil is splashed. After the lubricating oil is mixed with air, bubbles can be generated under the stirring of the gear pair, so that the volume of the lubricating oil is increased. Gear pair in the speed reducer can produce the heat when high-speed rotation, leads to lubricating oil temperature to rise, and gear pair stirs lubricating oil and also can lead to lubricating oil temperature to rise, makes the gas expansion in the speed reducer, and pressure rising when reaching a definite value with external atmospheric pressure difference, lubricating oil can spill from the faying face department of speed reducer box under the effect of pressure difference. To avoid this, a breather is generally attached to the reduction gear to balance the internal and external pressures of the reduction gear.
In the powder process system of the thermal power plant, the gear speed reducer which drives the rotor to rotate on the coal mill rotary separator needs to be communicated with sealing air with certain pressure and flow to isolate coal powder in the coal mill, so that the coal powder is prevented from entering the speed reducer which drives the rotor and polluting lubricating oil. Part of sealing wind inevitably breaks through the sealing of the speed reducer and enters the speed reducer, so that the internal pressure of the speed reducer is further increased. In this case, the conventional ventilation device cannot effectively isolate lubricating oil carried by gas during exhaust, so that the lubricating oil overflows or is discharged along with the gas, and the surrounding environment of the speed reducer is polluted.
SUMMERY OF THE UTILITY MODEL
For solving exist not enough among the prior art, the utility model aims to provide a novel speed reducer of leak protection oil is ventilated device.
The utility model adopts the following technical proposal:
the utility model provides a novel speed reducer of leak protection oil is ventilated device, it includes: the mounting flange is of a circular flange structure, a circular hole is formed in the center of the mounting flange, and the lower end of the hole plate type short circuit is inserted into the circular hole of the mounting flange and is welded with the hole plate type short circuit; the upper end of the orifice plate type short joint is in butt welding connection with the lower end of the zigzag labyrinth pipe, and the upper end of the zigzag labyrinth pipe is in welding connection with the lower end of the oil-blocking short joint; the volume-expanding type outer shell is sleeved on the outer sides of the zigzag labyrinth tube and the oil-blocking short circuit, the diameter of the outer shell is larger than the maximum diameter of the zigzag labyrinth tube and the oil-blocking short circuit, the lower side end of the outer shell is welded with the middle part of the zigzag labyrinth tube, the upper oil-accumulating plane of the outer shell is provided with a C-shaped air filter interface for connecting a C-shaped air filter, and the interface position is lower than the uppermost end of the volume-expanding type outer shell; the upper oil return plane of the expansion type shell is welded with the upper end of an upper oil return pipe, the other end of the upper oil return pipe penetrates through the lower oil return plane of the expansion type shell and the shell with the orifice plate type short circuit, and the tail end of the upper oil return pipe is welded with the central oil return short circuit; the lower oil return plane of the expansion type shell is welded with the upper end of the lower oil return pipe, the other end of the lower oil return pipe penetrates through the shell of the orifice plate type short circuit, and the tail end of the lower oil return pipe is welded with the central oil return short circuit; the upper end of the central oil return short circuit is welded at the center of a top plate of the orifice plate type short circuit, the lower end of the central oil return short circuit is connected with the upper end of the detachable main oil return pipe, and the tail end of the detachable main oil return pipe is immersed under lubricating oil liquid of the speed reducer.
As a preferred embodiment of the utility model, zigzag type labyrinth pipe is formed by the short joint assembly welding of a plurality of end to end's labyrinth.
As an embodiment of the present invention, a multi-layer filter net is further disposed in the C-shaped air filter interface of the expandable casing.
As a preferred embodiment of the utility model, C type air cleaner adopts threaded connection with dilatation formula shell.
As a preferred embodiment of the utility model, the top of C type air cleaner adopts butterfly nut to install double-deck shield.
As a preferred embodiment of the utility model, the inside cover external diameter of double-deck shield is less than the internal diameter of dilatation formula shell, and the overcoat internal diameter is greater than the external diameter of dilatation formula shell, and the inside cover is longer than the overcoat, and inside cover and overcoat and dilatation formula shell cooperation form tortuous route.
As a preferred embodiment of the invention, the C-shaped air filter is a JB/ZQ4522 standard component or a substitute product thereof.
As an embodiment of the present invention, the central oil return short circuit is connected to the detachable total oil return pipe through the straight pipe joint when welding.
As an preferred embodiment of the present invention, the lower end of the central oil return short circuit is closed and provided with a welded type straight pipe joint.
As a preferred embodiment of the present invention, the welded straight pipe joint is welded to the upper end of the removable main oil return pipe.
As a preferred embodiment of the present invention, the ventilating device is installed on the top end of the speed reducer through a mounting flange.
As a preferred embodiment of the utility model, the filter core of C type air cleaner (8) can block the oil drop that is greater than 40 microns, and the oil accessible filter core that is less than 40 microns.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a novel speed reducer of leak protection oil breather can mix lubricating oil when the gear pair in the speed reducer is high-speed to rotate, makes lubricating oil level take place the height fluctuation and fluid splashes, and lubricating oil level fluctuation can lead to partial lubricating oil to gush breather to outwards discharge along with gas. In the process, part of oil liquid flows back to the oil tank through the blocking of the orifice plate type short circuit and the zigzag type labyrinth pipe, and the orifice plate and the labyrinth structure of the device can effectively block splashed lubricating oil so that most of the splashed lubricating oil returns to the oil tank.
The device can effectively block splashed lubricating oil and oil drops carried by gas. The gas carries little oil to drip through the orifice plate formula short circuit of exhaust apparatus and the blockking of zigzag type labyrinth pipe, gets into the dilatation formula shell, because through-flow area increases, the gas flow rate slows down, makes the gas carry the ability decline of dripping, makes oil drip subside, and the filter core of filter screen and C type air cleaner department can further block that little oil drips and along with gas outgoing. The design of the double-layer anti-layer cover can isolate dust, and can form a tortuous path with the expansion type shell, so that airflow resistance is further provided, and oil drops are settled.
The novel structure of the device, such as the through hole plate type short circuit, the zigzag type labyrinth short pipe and the expansion type shell, is combined with the conventional air filter, the advantages of the conventional air filter, such as universality and easiness in acquisition, are utilized, and the defect of easiness in oil leakage of the conventional air filter is overcome. The device is particularly suitable for the working condition that a speed reducer of a dynamic separator similar to a coal mill runs in a high-temperature and high-pressure dust environment and sealed air is introduced. The speed reducer under the working condition can smoothly exhaust and balance the internal and external pressure of the speed reducer, and effectively block lubricating oil, so that the lubricating oil entering the ventilating device can flow back into the box body of the speed reducer, and the lubricating oil drops are prevented from being discharged along with gas to pollute the environment.
Drawings
Fig. 1 is a schematic structural view of a novel oil leakage prevention speed reducer ventilation device of the present invention;
FIG. 2 is a practical application example of the present invention in a dynamic separator reducer of a coal mill;
in the figure:
1-mounting flange, 2-hole plate type short circuit, 3-zigzag labyrinth tube, 4-lower oil return tube, 5-expansion type shell, 6-oil blocking short circuit, 7-double layer dust cap, 8-C type air filter, 9-filter screen, 10-upper oil return tube, 11-central oil return short circuit, 12-welding type straight-through tube joint and 13-detachable total oil return tube.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 is the utility model discloses a novel speed reducer of leak protection oil breather structure schematic diagram, fig. 2 is the utility model discloses an actual application example on coal pulverizer dynamic separator speed reducer, as shown in fig. 1, the utility model discloses a novel speed reducer of leak protection oil breather includes mounting flange 1, orifice plate formula short circuit 2 and dilatation formula shell 5.
The mounting flange 1 is a circular flange structure, a circular hole is formed in the center of the mounting flange, the lower end of the orifice plate type short circuit 2 is inserted into the circular hole of the mounting flange 1 and is in welded connection with the orifice plate type short circuit, the upper end of the orifice plate type short circuit 2 is in butt welded connection with the lower end of the zigzag labyrinth pipe 3, and the upper end of the zigzag labyrinth pipe 3 is in welded connection with the lower end of the oil-blocking short circuit 6.
Last oil return plane of dilatation formula shell 5 and the upper end welded connection who goes back oil pipe 10, go up the other end that returns oil pipe 10 and pass the lower oil return plane of dilatation formula shell 5 and the shell of orifice plate formula short circuit 2, its end and 11 welded connection of central oil return short circuit, the lower oil return plane of dilatation formula shell 5 and the upper end welded connection who returns oil pipe 4 down, the other end that returns oil pipe 4 down passes the shell of orifice plate formula short circuit 2, its end and 11 welded connection of central oil return short circuit.
The upper end of the central oil return short circuit 11 is welded at the center of a top plate of the orifice plate type short circuit 2, the lower end of the central oil return short circuit is connected with the upper end of the detachable main oil return pipe 13, and the tail end of the detachable main oil return pipe 13 is immersed under lubricating oil liquid of the speed reducer.
The zigzag labyrinth tube 3 is formed by assembling and welding a plurality of end-to-end labyrinth short joints. .
And a multi-layer filter screen 9 is also arranged in the C-shaped air filter interface of the expansion type shell 5.
C type air cleaner 8 and dilatation formula shell 5 adopt threaded connection, and double-deck shield 7 is installed to the top of C type air cleaner 8 adoption butterfly nut.
The outer diameter of the inner sleeve of the double-layer dustproof cover 7 is smaller than the inner diameter of the expandable shell 5, the inner diameter of the outer sleeve is larger than the outer diameter of the expandable shell 5, the inner sleeve is longer than the outer sleeve, and the inner sleeve, the outer sleeve and the expandable shell 5 are matched to form a tortuous path.
The C-type air filter 8 is a JB/ZQ4522 standard component or a substitute product thereof.
The central oil return short circuit 11 is connected with the detachable main oil return pipe 13 through the straight-through pipe joint 12 during welding, the lower end of the central oil return short circuit 11 is closed and provided with the welded straight-through pipe joint 12, and the welded straight-through pipe joint 12 is welded and connected with the upper end of the detachable main oil return pipe 13.
The ventilating device is installed at the top end of the speed reducer through an installation flange 1.
The use method of the novel oil leakage prevention speed reducer ventilating device comprises the following steps:
step 1), stirring lubricating oil when a gear pair in a speed reducer rotates at a high speed, so that the oil level of the lubricating oil fluctuates and the oil splashes, wherein part of the lubricating oil rushes into a ventilation device due to fluctuation of the oil level of the lubricating oil and is discharged outwards along with gas, and in the process, part of the oil flows back to an oil tank through blocking of a hole plate type short circuit 2 and a zigzag type labyrinth pipe 3 and blocking of an oil blocking short circuit 6, and part of the oil flows into a lower oil accumulation plane of an expansion type shell 5 along the pipe wall and then returns to the oil tank through a lower oil return pipe 4, a central oil return short circuit 11, a welded straight-through pipe joint 12 and a detachable total oil return pipe 13 after passing through a vent hole plate type short circuit 2 and a vent hole of the zigzag type labyrinth pipe 3 and blocking of the oil blocking short circuit 6;
step 2), when a gear pair in the speed reducer rotates at a high speed, heat is generated to cause the temperature of lubricating oil to rise, and the gear pair stirs the lubricating oil to cause the temperature of the lubricating oil to rise, so that gas in the speed reducer expands, the pressure rises, the expanded gas carries oil drops to pass through the orifice plate type short circuit 2 of the exhaust device and the blockage of the zigzag labyrinth pipe 3, and then the oil drops enter the volume-expanding type shell 5, the flow rate of the expanded gas is reduced due to the increase of the flow area, the capacity of the gas for carrying the oil drops is reduced, part of the oil drops are settled, and part of the oil drops are carried by airflow to pass through the filter screen 9 to the C-shaped air filter 8, a filter element is arranged in the C-shaped air filter 8, the oil drops which cannot pass through the filter element are prevented from settling on an upper oil accumulation platform of the volume-expanding type shell 5 and then enter the double-layer dust cover 7, the resistance is large due to the rapid expansion of the flow area of the gas in the double-layer dust cover 7, the flow rate is reduced, and the oil drops settle on the upper oil accumulation platform of the volume-expanding type shell 5 through a central short circuit 11 of the upper oil return pipe, and a welded oil tank 12, and a total oil return pipe joint 13 returns to the oil return pipe.
The filter element of the C-type air filter 8 can block oil drops larger than 40 microns, and oil smaller than 40 microns can pass through the filter element.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a novel speed reducer of leak protection oil breather can mix lubricating oil when the gear pair in the speed reducer is high-speed to rotate, makes lubricating oil level take place the height fluctuation and fluid splashes, and lubricating oil level fluctuation can lead to partial lubricating oil to gush breather to outwards discharge along with gas. In the process, part of oil liquid flows back to the oil tank through the blocking of the orifice plate type short circuit and the zigzag type labyrinth pipe, and the orifice plate and the labyrinth structure of the device can effectively block splashed lubricating oil so that most of the splashed lubricating oil returns to the oil tank.
The device can effectively block splashed lubricating oil and oil drops carried by gas. The gas carries little oil to drip through the orifice plate formula short circuit of exhaust apparatus and the blockking of zigzag type labyrinth pipe, gets into the dilatation formula shell, because through-flow area increases, the gas flow rate slows down, makes the gas carry the ability decline of dripping, makes oil drip subside, and the filter core of filter screen and C type air cleaner department can further block that little oil drips and along with gas outgoing. The design of the double-layer anti-layer cover can isolate dust, and can form a tortuous path with the expansion type shell, so that airflow resistance is further provided, and oil drops are settled.
The novel structure of the device, such as the through hole plate type short circuit, the zigzag type labyrinth short pipe and the expansion type shell, is combined with the conventional air filter, the advantages of the conventional air filter, such as universality and easiness in acquisition, are utilized, and the defect of easiness in oil leakage of the conventional air filter is overcome. The device is particularly suitable for the working conditions that a speed reducer similar to a dynamic separator of a coal mill runs in a high-temperature and high-pressure dust environment and sealed air is introduced. The speed reducer under the working condition can smoothly exhaust and balance the internal and external pressure of the speed reducer, and effectively block lubricating oil, so that the lubricating oil entering the ventilating device can flow back into the box body of the speed reducer, and the lubricating oil drops are prevented from being discharged along with gas to pollute the environment.
The applicant of the present invention has made detailed description and description on the implementation examples of the present invention with reference to the drawings, but those skilled in the art should understand that the above implementation examples are only the preferred embodiments of the present invention, and the detailed description is only for helping the reader to better understand the spirit of the present invention, and not for limiting the protection scope of the present invention, on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a novel speed reducer of leak protection oil is ventilated device, it includes: mounting flange (1), orifice plate formula short circuit (2) and dilatation formula shell (5), its characterized in that:
the mounting flange (1) is of a circular flange structure, a circular hole is formed in the center of the mounting flange, and the lower end of the orifice plate type short circuit (2) is inserted into the circular hole of the mounting flange (1) and is welded with the orifice plate type short circuit;
the upper end of the orifice plate type short joint (2) is in butt welding connection with the lower end of the zigzag labyrinth pipe (3), and the upper end of the zigzag labyrinth pipe (3) is in welding connection with the lower end of the oil-blocking short joint (6);
the expansion type shell (5) is sleeved on the outer sides of the zigzag labyrinth pipe (3) and the oil-blocking short circuit (6), the diameter of the shell is larger than the maximum diameter of the zigzag labyrinth pipe (3) and the oil-blocking short circuit (6), the lower side end of the shell is welded with the middle part of the zigzag labyrinth pipe (3), a C-shaped air filter interface is arranged on an oil accumulation plane on the upper part of the shell and used for being connected with a C-shaped air filter (8), and the interface position is lower than the uppermost end of the expansion type shell;
the upper oil return plane of the expansion type shell (5) is connected with the upper end of an upper oil return pipe (10) in a welding mode, the other end of the upper oil return pipe (10) penetrates through the lower oil return plane of the expansion type shell (5) and the shell of the orifice plate type short circuit (2), and the tail end of the upper oil return pipe is connected with the central oil return short circuit (11) in a welding mode;
the lower oil return plane of the expansion type shell (5) is welded with the upper end of the lower oil return pipe (4), the other end of the lower oil return pipe (4) penetrates through the shell of the orifice plate type short circuit (2), and the tail end of the lower oil return pipe is welded with the central oil return short circuit (11);
the upper end of the central oil return short circuit (11) is welded at the center of a top plate of the orifice plate type short circuit (2), the lower end of the central oil return short circuit is connected with the upper end of the detachable main oil return pipe (13), and the tail end of the detachable main oil return pipe (13) is immersed under lubricating oil liquid of the speed reducer.
2. The novel oil-leakage-preventing speed reducer ventilating device according to claim 1, characterized in that:
the zigzag labyrinth tube (3) is formed by assembling and welding a plurality of labyrinth short joints which are connected end to end.
3. The novel oil leakage prevention speed reducer ventilating device according to claim 1, characterized in that:
and a plurality of layers of filter screens (9) are also arranged in the C-shaped air filter interface of the expansion-type shell (5).
4. The novel oil leakage prevention speed reducer ventilating device according to claim 3, characterized in that:
the C-shaped air filter (8) is connected with the expansion type shell (5) by threads;
the top of the C-shaped air filter (8) is provided with a double-layer dustproof cover (7) by adopting a butterfly nut.
5. The novel oil-leakage-preventing speed reducer ventilating device according to claim 4, characterized in that:
the outer diameter of the inner sleeve of the double-layer dustproof cover (7) is smaller than the inner diameter of the expansion type shell (5), the inner diameter of the outer sleeve is larger than the outer diameter of the expansion type shell (5), the inner sleeve is longer than the outer sleeve, and the inner sleeve and the outer sleeve are matched with the expansion type shell (5) to form a tortuous path.
6. The novel oil-leakage-preventing speed reducer ventilating device according to claim 1, characterized in that:
the C-type air filter (8) is a JB/ZQ4522 standard component or a substitute product thereof.
7. The novel oil-leakage-preventing speed reducer ventilating device according to claim 1, characterized in that:
the central oil return short circuit (11) is connected with a detachable main oil return pipe (13) through a welded straight-through pipe joint (12);
the lower end of the central oil return short joint (11) is closed and is provided with a welded straight-through pipe joint (12);
the welded straight-through pipe joint (12) is welded and connected with the upper end of the detachable main oil return pipe (13).
8. The novel oil-leakage-preventing speed reducer ventilating device according to claim 1, characterized in that:
the ventilating device is installed at the top end of the speed reducer through an installation flange (1).
9. The novel oil leakage prevention speed reducer ventilating device according to claim 6, characterized in that:
the filter element of the C-shaped air filter (8) can block oil drops larger than 40 micrometers, and oil smaller than 40 micrometers can pass through the filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222111219.1U CN218094144U (en) | 2022-08-11 | 2022-08-11 | Novel speed reducer of leak protection oil is ventilated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222111219.1U CN218094144U (en) | 2022-08-11 | 2022-08-11 | Novel speed reducer of leak protection oil is ventilated device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218094144U true CN218094144U (en) | 2022-12-20 |
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ID=84444925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222111219.1U Active CN218094144U (en) | 2022-08-11 | 2022-08-11 | Novel speed reducer of leak protection oil is ventilated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218094144U (en) |
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2022
- 2022-08-11 CN CN202222111219.1U patent/CN218094144U/en active Active
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