CN211398507U - Ventilation device and gear box - Google Patents

Abstract

The application discloses ventilative device and gear box relates to gear drive's technical field. The utility model provides a ventilative device includes the shell body, ventilative stopper and blast pipe, and the shell body has first inner chamber, be equipped with on the shell body with communicating first air inlet and first gas outlet of first inner chamber, ventilative stopper is located first inner chamber, ventilative stopper has the second inner chamber, be equipped with on the ventilative stopper with communicating second air inlet of second inner chamber and second gas outlet, the blast pipe is connected in first gas outlet, and communicate with each other with first inner chamber. Therefore, the outer shell is covered outside the ventilating plug, and gas inside and outside the gear box is exchanged through the exhaust pipe, so that pollutants can be prevented from directly entering the gear box through the ventilating plug to pollute the internal environment of the gear box, and the problems of leakage, failure and the like of the gear box are avoided. In addition, the outer shell covers outside the vent plug, so that the vent plug can be prevented from being damaged due to collision.

Description

Ventilation device and gear box

Technical Field

The application relates to the technical field of gear transmission equipment, in particular to a ventilating device and a gear box.

Background

In a plurality of industries such as building materials, metallurgy, mines, tower cranes and the like, gear boxes are widely applied, and the gear boxes are often required to be connected with ventilating plugs, so that the box is kept in gas communication with the inside and the outside, and the gear boxes are used for avoiding overhigh internal gas pressure.

However, in the actual operation process, the ventilation plug passes through air, water, dust and other pollutants, so that the internal environment of the gearbox is polluted, and the problems of leakage, failure and the like of the gearbox are caused.

For example, when the gear box is in the environment of many dusts in the pit, shut down when the gear box, the gear box cools off, inside atmospheric pressure diminishes and can cause the suck-back phenomenon, get into a large amount of dusts and dust easily, pollutants such as powdered ore, dust or dust can get into the gear box through ventilative stopper, when the gear box during operation, pollutants such as powdered ore, dust or dust and ventilative stopper contact, can directly get into the gear box through ventilative stopper, lead to ventilative stopper jam or box inside lubricating oil to mix into pollutants such as a large amount of powdered ore, dust or dust, thereby pollute the internal environment of gear box.

When the gear box is positioned in the cooling tower, the humidity of air is high due to the damp heat of the actual environment in the cooling tower, and pollutants such as water and the like enter the gear box through the ventilation plug, so that water enters the gear box, and the internal environment of the gear box is polluted; when the gear box is in open-air environment such as tower crane, harbour machinery, changeable rainwater weather can make pollutants such as water can get into the gear box through ventilative stopper, leads to the inside water of gear box to pollute the internal environment of gear box.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a ventilative device and gear box, it can prevent that the internal environment of pollutant entering gear box through ventilative stopper pollutes the gear box.

The embodiment of the application is realized as follows:

the utility model provides a ventilative device includes shell body, ventilative stopper and blast pipe, the shell body has first inner chamber, be equipped with on the shell body with communicating first air inlet and first gas outlet of first inner chamber, ventilative stopper is located in the first inner chamber, ventilative stopper has the second inner chamber, be equipped with on the ventilative stopper with communicating second air inlet and second gas outlet of second inner chamber, the blast pipe connect in first gas outlet, and with first inner chamber communicates with each other.

In an embodiment, an installation groove is formed in the inner wall of the outer shell, a partition plate is arranged in the installation groove, the partition plate divides the first inner cavity into a first cavity and a second cavity, the first air inlet is communicated with the first cavity, and the first air outlet is communicated with the second cavity; the isolating plate is provided with a connecting hole, and the ventilation plug is fixed on the isolating plate through the connecting hole.

In one embodiment, the inner wall of the connecting hole is provided with a first internal thread; the vent plug is of a tubular structure, and a first external thread matched with the first internal thread is arranged on the outer wall of the vent plug.

In an embodiment, the second air outlet is disposed in the first cavity, and the second air inlet is disposed in the second cavity.

In one embodiment, the axis of the first air inlet is perpendicular to the axis of the first air outlet; the axis of the second air inlet is vertical to the axis of the second air outlet; the axis of the second air inlet and the axis of the first air inlet are arranged in parallel or in superposition, and the opening directions of the first air inlet and the second air inlet are arranged in the same direction.

In one embodiment, the exhaust pipe comprises a joint and a pipe body, wherein the joint is detachably connected to the first air outlet; the pipe body is detachably connected to the joint; the tube body is provided with a third air inlet and a third air outlet, and a bending part is arranged between the third air inlet and the third air outlet.

In an embodiment, an axis of the third air inlet is perpendicular to an axis of the third air outlet, and the opening directions of the first air outlet and the third air inlet are arranged in the same direction.

In one embodiment, the outer housing includes a first housing and a second housing that are connected in an up-and-down fit manner.

A gearbox comprises a gearbox shell and a ventilating device, wherein the gearbox shell is provided with a third inner cavity, and a mounting hole communicated with the third inner cavity is formed in the gearbox shell; the ventilating device is arranged in the mounting hole and is the ventilating device.

In one embodiment, one end of the exhaust pipe is connected to the outer casing, and the other end of the exhaust pipe is fixed to the casing or fixed outside the casing.

Compared with the prior art, the beneficial effect of this application is: this application establishes outside ventilative stopper through the shell body cover to through the inside and outside gas of blast pipe exchange gear case, thereby can prevent that the pollutant from directly getting into the gear case through ventilative stopper and polluting the internal environment of gear case, avoid the gear case to leak, the appearance of inefficacy scheduling problem.

In addition, the outer shell covers outside the vent plug, so that the vent plug can be prevented from being damaged due to collision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a gearbox according to an embodiment of the present application;

FIG. 2 is an enlarged view of section A of FIG. 1 of the present application;

FIG. 3 is a schematic structural diagram of a gearbox according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a venting device according to an embodiment of the present application;

fig. 5 is an exploded view of a venting device according to an embodiment of the present application.

Icon: 100-a gearbox; 1-a box shell; 11-mounting holes; 12-a third lumen; 5-a ventilation device; 2-an outer shell; 21-a first air inlet; 22-a first air outlet; 23-a first lumen; 23 a-a first cavity; 23 b-a second cavity; 24-a mounting groove; 24 a-a second internal thread; 25-a separator plate; 251-a connection hole; 251 a-first internal thread; 25 a-a second external thread; 26-a first convex column; 26 a-a third external thread; 27-a first housing; 28-a second housing; 29-a second post; 29 a-fourth external thread; 3-a gas-permeable plug; 31-a second air inlet; 32-a second air outlet; 33-a second lumen; 34-a first fastening flange; 3 a-a first external thread; 4-an exhaust pipe; 41-a linker; 411-fourth lumen; 411 a-third internal thread; 412-a second fastening flange; 42-a tube body; 421-a third air inlet; 422-a third air outlet; 423-bending part; 9-cooling tower.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.

Please refer to fig. 1, which is a schematic structural diagram of a gearbox 100 according to an embodiment of the present application. Please refer to fig. 2, which is an enlarged view of a portion a of fig. 1 of the present application. A gearbox 100 comprises a box shell 1 and a ventilation device 5, wherein the box shell 1 is provided with a third inner cavity 12, and a mounting hole 11 communicated with the third inner cavity 12 is formed in the box shell 1; the ventilation device 5 is installed in the installation hole 11.

The ventilation device 5 comprises an outer shell 2, a ventilation plug 3 and an exhaust pipe 4, wherein the outer shell 2 is provided with a first inner cavity 23, the outer shell 2 is provided with a first air inlet 21 and a first air outlet 22 which are communicated with the first inner cavity 23, the ventilation plug 3 is arranged in the first inner cavity 23, one end of the exhaust pipe 4 is connected to the first air outlet 22 and communicated with the first inner cavity 23, and one end of the exhaust pipe is fixed on the box shell 1.

Wherein, the end opening that blast pipe 4 is fixed in on case shell 1 sets up for vertical downwards, perhaps sets up towards ground.

This embodiment can be applied to tower crane and harbour machinery's open-air operational environment, through the setting of shell body 2 and blast pipe 4 to can avoid pollutants such as rainwater directly to get into third inner chamber 12 through ventilative stopper 3, prevent that gear box 100 is inside to intake and pollute gear box 100's internal environment.

This embodiment can be applied to many dust environment such as mine, through the setting of shell body 2 and blast pipe 4 to can reduce pollutant contact such as ventilative stopper 3 and powdered ore, dust or dust, thereby can avoid the pollutant directly to get into third inner chamber 12 through ventilative stopper 3, avoid ventilative stopper 3 to block up or the inside lubricating oil of box sneaks into a large amount of pollutants, thereby pollute the internal environment of gear box 100. In addition, the relatively slender exhaust tube 4 reduces the chance of contaminants entering the third interior chamber 12 when the gearbox 100 is shut down, the gearbox 100 cools, and internal air pressure becomes less, which can cause suck-back.

Therefore, the outer shell 2 is covered outside the ventilation plug 3 in the embodiment, and the gas inside and outside the gear box 100 is exchanged through the exhaust pipe 4, so that the internal environment of the gear box 100 can be prevented from being polluted by the pollutants directly entering the gear box 100 through the ventilation plug 3, and the problems of leakage, failure and the like of the gear box 100 are avoided. In addition, the outer shell 2 covers the vent plug 3, so that the vent plug 3 can be prevented from being damaged due to collision.

Please refer to fig. 3, which is a schematic structural diagram of a gearbox 100 according to an embodiment of the present application. This embodiment can be applied to the cooling tower 9. The gear box 100 is arranged in the cooling tower 9, one end of the exhaust pipe 4 is connected to the outer shell 2, and the other end of the exhaust pipe extends out of the cooling tower 9, is fixed outside the box shell 1 and is positioned in the outer space of the cooling tower 9.

In the embodiment, one end of the exhaust pipe 4 is fixed outside the cabinet 1, and may be fixed on the ground or on a wall, may be fixed on an outer wall of the cooling tower 9, or may be fixed on other equipment except the cooling tower 9.

In one embodiment, the end opening of the exhaust pipe 4 fixed outside the cabinet 1 is disposed vertically downward or toward the ground.

The internal environment of cooling tower 9 is wet and hot comparatively, and the external environment of cooling tower 9 is comparatively dry, and the setting of shell body 2 and blast pipe 4 is passed through to this embodiment, through the length of extension blast pipe 4 for gear box 100's third inner chamber 12 (please refer to fig. 2) communicates with each other with the external dry environment of cooling tower 9, thereby can avoid pollutants such as water directly to get into third inner chamber 12 through ventilative stopper 3, prevents that gear box 100 is inside to intake and pollutes gear box 100's internal environment.

Fig. 4 is a cross-sectional view of an air-permeable device 5 according to an embodiment of the present disclosure. The vent plug 3 is provided with a second inner cavity 33, and a second air inlet 31 and a second air outlet 32 which are communicated with the second inner cavity 33 are arranged on the vent plug 3.

An installation groove 24 is formed in the inner wall of the outer shell 2, a partition plate 25 is fixedly arranged in the installation groove 24, the partition plate 25 divides the first inner cavity 23 into a first cavity 23a and a second cavity 23b, the first air inlet 21 is communicated with the first cavity 23a, and the first air outlet 22 is communicated with the second cavity 23 b; the partition plate 25 is provided with a connecting hole 251, and the vent plug 3 is detachably fixed to the partition plate 25 through the connecting hole 251. The second outlet port 32 is disposed in the first cavity 23a, and the second inlet port 31 is disposed in the second cavity 23 b.

The outer shape of the outer shell 2 may be a cuboid, a cylinder, a circular truncated cone, or the like, the first inner cavity 23 may be a cuboid, a cylinder, a circular truncated cone, or the like, and the outer shape of the corresponding partition plate 25 may be a cuboid, a cylinder, or the like.

In an operation process, when the gear box 100 works, a pressure difference is formed between high-temperature gas inside the gear box 100 and normal-temperature gas outside, the high-temperature gas can enter the first cavity 23a through the first air inlet at a high speed under the driving of pressure, and is blocked by the partition plate 25 to enter the second inner cavity 33 of the vent plug 3 only from the second air inlet, then enter the second cavity 23b through the second air outlet, and then is discharged out of the gear box 100 from the exhaust pipe 4 through the first air outlet.

When the gear box 100 works, when lubricating oil is sprayed outwards due to severe oil stirring inside the gear box 100, the lubricating oil enters the first cavity 23a through the first air inlet hole, and the lubricating oil can flow back to the third inner cavity 12 of the box shell 1 again due to the arrangement of the first cavity 23a and the partition plate 25, so that oil leakage of the air-permeable device 5 can be avoided.

To facilitate the air flow, the axis of the second air inlet 31 is arranged parallel to or coincident with the axis of the first air inlet 21. The opening directions of the first air inlet 21 and the second air inlet 31 are set in the same direction. In this embodiment, the axis of the second intake port 31 and the axis of the first intake port 21 are located on the same straight line.

The axis of the second air inlet 31 is perpendicular to the axis of the second air outlet 32, so that the gas entering the purge plug 3 can turn all the way into the second cavity 23b under the guidance of the purge plug 3. In this embodiment, the second air inlet 31 comprises a plurality of strip-shaped holes distributed in a circumferential array around the axis of the purge plug 3.

The axis of the first air inlet 21 is perpendicular to the axis of the first air outlet 22, and the axis of the first air outlet 22 is parallel to or coincident with the axis of the second air outlet 32, so that the gas can flow to the exhaust pipe 4.

Fig. 5 is an exploded view of the ventilation device 5 according to an embodiment of the present disclosure. The outer case 2 includes a first case 27 and a second case 28 which are coupled to each other in an up-and-down manner. The mounting groove 24 and the partition plate 25 are provided on the second housing 28. To facilitate the installation of the purge plug 3, the first housing 27 and the second housing 28 may be detachably connected by a snap connection, a screw connection, a bolt connection, or the like.

In another embodiment, a sealing ring may be disposed between the first housing 27 and the second housing 28 for sealing.

The outer shape of the outer housing 2 and the first inner cavity 23 are both cylindrical, and the partition plate 25 is of an annular structure. The outer wall of the isolation plate 25 is provided with a second external thread 25a, the inner wall of the mounting groove 24 is provided with a second internal thread 24a matched with the second external thread 25a, and the isolation plate 25 can be detachably connected with the outer shell 2 through the second external thread 25a and the second internal thread 24 a.

The ventilation plug 3 is of a tubular structure, the connecting hole 251 is a round hole, and a first internal thread 251a is arranged on the inner wall of the connecting hole 251; the outer wall of the vent plug 3 is provided with a first external thread 3a matched with the first internal thread 251 a. The purge plug 3 is detachably fixed to the partition plate 25 through the connection hole 251. The purge plug 3 may be detachably coupled with the partition plate 25 by the first external thread 3a and the first internal thread 251 a.

The exhaust pipe 4 includes a joint 41 and a pipe body 42, the joint 41 being detachably connected to the first air outlet 22; the pipe body 42 is detachably connected to the joint 41. The joint 41 may be made of metal or plastic, and the tube body 42 may be a hard tube or a telescopic tube made of rubber.

A first convex column 26 is arranged on the outer wall of the outer shell 2 and at the position of the first air outlet 22, a third external thread 26a is arranged on the first convex column 26, the joint 41 is a cylindrical structure with two open ends and is provided with a fourth inner cavity 411, and a third internal thread 411a matched with the third external thread 26a is arranged on the inner surface of the fourth inner cavity 411. The connection of the joint 41 and the pipe body 42 includes a plug-in connection, a snap connection or a threaded connection.

A second fastening flange 412 is provided on the outer wall of the joint 41, and the second fastening flange 412 has a bolt head shape for fastening the joint 41 when the joint 41 is fixed to the outer case 2. The second fastening flange 412 may be in the shape of a hexagonal prism or a quadrangular prism, etc.

The tube body 42 has a third air inlet 421 and a third air outlet 422, and after the tube body 42 is inserted into the fourth inner cavity 411, the third air inlet 421 can be communicated with the first air outlet 22. The pipe body 42 has a bending portion 423 between the third air inlet 421 and the third air outlet 422, so that the air can rotate a certain angle when flowing in the pipe body 42, and the chance that the pollutants directly enter the gear box 100 through the vent plug 3 is reduced. The bent portion 423 may be rounded.

In this embodiment, the opening of the third air outlet 422 faces the ground, i.e., vertically downward. The opening of the third air inlet 421 is disposed toward the first air outlet 22, i.e., laterally. The axis of the third air inlet 421 and the axis of the third air outlet 422 are vertically arranged, the opening direction of the first air outlet 22 is in butt joint with the opening direction of the third air inlet 421, and the axis of the third air inlet 421 and the axis of the first air outlet 22 are positioned on the same straight line.

A second convex pillar 29 is disposed on the outer wall of the outer casing 2 and at the first air inlet 21, a fourth external thread 29a is disposed on the second convex pillar 29, and a fourth internal thread matching with the fourth external thread 29a is disposed on the inner wall of the mounting hole 11 (see fig. 2) of the gear box 100.

A first fastening flange 34 is provided on the outer wall of the purge plug 3, and the first fastening flange 34 has a bolt head shape and is used to screw the purge plug 3 when the purge plug 3 is fixed to the partition plate 25. The first fastening flange 34 may be in the shape of a hexagonal prism or a quadrangular prism, etc. The first fastening flange 34 is provided above the first external thread 3 a.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An air-permeable device, comprising:

the outer shell is provided with a first inner cavity, a first air inlet and a first air outlet which are communicated with the first inner cavity;

the ventilation plug is provided with a second inner cavity, a second air inlet and a second air outlet which are communicated with the second inner cavity; and

the exhaust pipe is connected with the first air outlet and communicated with the first inner cavity;

wherein, the ventilation plug is arranged in the first inner cavity.

2. The ventilation device according to claim 1, wherein an installation groove is formed on the inner wall of the outer shell, a partition plate is arranged in the installation groove, the partition plate divides the first inner cavity into a first cavity and a second cavity, the first air inlet is communicated with the first cavity, and the first air outlet is communicated with the second cavity;

the isolating plate is provided with a connecting hole, and the ventilation plug is fixed on the isolating plate through the connecting hole.

3. The ventilation device according to claim 2, wherein the inner wall of the connecting hole is provided with a first internal thread;

the vent plug is of a tubular structure, and a first external thread matched with the first internal thread is arranged on the outer wall of the vent plug.

4. The venting device of claim 3, wherein the second air outlet is disposed in the first cavity and the second air inlet is disposed in the second cavity.

5. The venting device of claim 4 wherein the axis of the first air inlet is disposed perpendicular to the axis of the first air outlet;

the axis of the second air inlet is vertical to the axis of the second air outlet;

the axis of the second air inlet and the axis of the first air inlet are arranged in parallel or in superposition, and the opening directions of the first air inlet and the second air inlet are arranged in the same direction.

6. The venting device of claim 1, wherein the exhaust tube comprises:

a joint detachably connected to the first air outlet; and

a pipe body detachably connected to the joint;

the tube body is provided with a third air inlet and a third air outlet, and a bending part is arranged between the third air inlet and the third air outlet.

7. The ventilation apparatus as claimed in claim 6, wherein the axis of the third air inlet is perpendicular to the axis of the third air outlet, and the opening directions of the first air outlet and the third air inlet are arranged in the same direction.

8. The venting device of any one of claims 1 to 7, wherein the outer housing comprises a first housing and a second housing that are cooperatively connected one above the other.

9. A gearbox, comprising:

the box shell is provided with a third inner cavity and a mounting hole communicated with the third inner cavity; and

the ventilating device, which is installed in the installation hole, is the ventilating device of any one of claims 1 to 8.

10. A gearbox according to claim 9 in which the exhaust duct is connected at one end to the outer casing and is fixed at one end to the casing or is fixed outside the casing.

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