CN220816675U

CN220816675U - Breather valve

Info

Publication number: CN220816675U
Application number: CN202322180296.7U
Authority: CN
Inventors: 沈亮; 张萌; 陈子昂
Original assignee: China National Heavy Duty Truck Group Ji'nan Special Vehicle Co ltd
Current assignee: China National Heavy Duty Truck Group Ji'nan Special Vehicle Co ltd
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2024-04-19
Anticipated expiration: 2033-08-14

Abstract

The utility model provides a breather valve, which relates to the field of breather valves, and adopts the following scheme: the novel air purifier comprises a shell, wherein a first air hole and a second air hole are formed in the shell, an air flow channel is formed in the shell, the air flow channel is communicated with the first air hole and the second air hole, and a filter screen is arranged in the air flow channel. The utility model can greatly reduce the impurity in the air from entering the container and greatly avoid the medium from being polluted.

Description

Breather valve

Technical Field

The utility model relates to the field of breather valves, in particular to a breather valve.

Background

Because differential mechanism, gearbox, transfer case or fuel tank often carry out the transceiver operation of medium, and medium volume change often causes the internal pressure change, and external environment's temperature also can cause the internal pressure change, in order to guarantee that the pressure in the container such as differential mechanism, gearbox, transfer case or fuel tank of vehicle is in safe range, often this kind of container installation with the trachea of atmospheric communication, through the inside pressure of trachea equilibrium container, the trachea needs to extend to the eminence of vehicle or far away, and the size is longer, influences whole car impression.

In order to solve the technical problem, in the prior art, a breather valve is generally arranged on a container such as a differential mechanism, a gearbox, a transfer case or a fuel tank of a vehicle, and the breather valve has the functions of discharging positive pressure and negative pressure, so that the container can be prevented from being damaged due to overpressure or vacuum, evaporation loss of internal fuel oil, lubricating grease and the like can be reduced, when the container bears certain positive pressure, the breather valve can be used for opening the positive pressure of discharging exhaled gas, and when the container bears negative pressure, the breather valve can be used for opening the negative pressure of discharging inhaled gas, so that the pressure in the container is ensured to be within a certain safety range.

Because the breather valve is directly communicated with the air, impurities in the air can enter the container through the breather valve, so that the pollution of mediums such as lubricating oil, fuel oil and the like is caused, the lubricating effect is seriously affected, and the serious abrasion of parts can be caused.

Disclosure of utility model

In order to solve the problem of medium pollution in the container caused by the arrangement of the breather valve in the prior art, the utility model provides the breather valve, which can greatly reduce the entry of impurities in the air into the container and greatly avoid the medium pollution.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the breather valve comprises a shell, wherein a first air hole and a second air hole are formed in the shell, an air flow channel is formed in the shell, the air flow channel is communicated with the first air hole and the second air hole, and a filter screen is arranged in the air flow channel. Can filter gas through the filter screen, intercept impurity in the filter screen, the very big impurity that reduces gets into in the container, the very big medium of avoiding is polluted.

Further, the air flow channel comprises a filtering channel and an emergency channel, both ends of the filtering channel and both ends of the emergency channel are respectively communicated with the first air hole and the second air hole, the filter screen is arranged in the filtering channel, and a bidirectional pressure valve assembly is arranged in the emergency channel. Through setting up emergent passageway and two-way pressure valve subassembly, can still guarantee breather valve gas circulation after the filter screen blocks up, guarantee breather valve's atmospheric pressure balance function.

Further, after the filter screen is blocked, the pressure difference between the inside of the container and the atmosphere is P1, and the opening pressure of the two-way pressure valve assembly is P2, wherein P1 is less than P2 and less than 0.2bar. The bidirectional pressure valve component is prevented from realizing gas conduction when the filter screen works normally, so that part of gas carries impurities into the container.

Further, the bidirectional pressure valve assembly comprises a through flow column, the through flow column is in interference fit with the emergency channel, two through flow grooves are symmetrically formed in the through flow column, the length direction of the through flow grooves is identical to that of the through flow column, pressure valves are arranged on the two through flow grooves, the pressure valves are of cambered surface structures, the pressure valves are made of elastic materials, and the opening directions of the two pressure valves are opposite. The two-way conduction of the two-way pressure valve group can be realized through the two pressure valves with opposite opening directions, so that the balance function of the breather valve is ensured.

Furthermore, the pressure valve is made of rubber.

Furthermore, the pressure valve and the through-flow column are of an integrated structure, and the pressure valve and the through-flow column are made of rubber materials.

Further, a sealing ring is arranged on the outer circumferential surface of the through-flow column. Gas is prevented from flowing through the clearance between the through-flow column and the emergency channel by the sealing ring.

Further, a connector tube is arranged on the shell, the connector tube is communicated with the first air hole, a first ventilation notch is formed in the connector tube, a shell cover is arranged on the connector tube, a second ventilation notch is formed in the shell cover and corresponds to the first ventilation notch, the first ventilation notch is formed in the lower portion of the connector tube, and the second ventilation notch is formed in the lower portion of the shell cover. Through setting up vent notch one and vent notch two in the lower part can reduce impurity entering, extension filter screen life.

Further, the interface tube is provided with a clamping groove, the length direction of the clamping groove is the same as that of the interface tube, a clamping block is correspondingly arranged on the inner side of the shell cover, and the clamping block is in interference fit with the clamping groove. The shell cover is convenient to install through the clamping block and the clamping groove, and meanwhile has a positioning function, and the ventilation notch II and the ventilation notch I are guaranteed to form an air passage correspondingly.

Further, a clamping ring is coaxially arranged on the outer circumferential surface of the interface tube. The shell cover is prevented from falling off by the clamping ring.

From the above technical scheme, the utility model has the following advantages:

The utility model provides a breather valve, which can filter gas through a filter screen, intercept impurities in the filter screen, greatly reduce the impurities from entering a container and greatly avoid medium pollution; the emergency channel and the bidirectional pressure valve assembly are arranged, so that the ventilation of the breather valve can be ensured after the filter screen is blocked, and the air pressure balance function of the breather valve is ensured; the two-way conduction of the two-way pressure valve group can be realized through the two pressure valves with opposite opening directions, so that the balance function of the breather valve is ensured; the sealing ring prevents gas from flowing through the gap between the through-flow column and the emergency channel; the first ventilation notch and the second ventilation notch are arranged at the lower part, so that the entry of impurities can be reduced, and the service life of the filter screen can be prolonged; the shell cover is convenient to install through the clamping block and the clamping groove, and meanwhile, the shell cover has a positioning function, and the ventilation notch II and the ventilation notch I are guaranteed to form an air passage correspondingly; the shell cover is prevented from falling off by the clamping ring.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a specific embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.

Fig. 3 is a schematic diagram of a third embodiment of the present utility model.

Fig. 4 is a schematic structural view of a bi-directional pressure valve assembly in accordance with an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a specific embodiment of the present utility model.

Fig. 6 is a schematic diagram of a second embodiment of the present utility model.

In the figure, 1, a shell; 11. a filtration channel; 12. an emergency channel; 13. an air hole II; 14. a fixing hole; 15. a clasp; 16. a first ventilation notch; 17. a clamping groove; 18. an air hole I; 2. a cover; 22. a second ventilation notch; 23. a clamping block; 3. a filter screen; 4. a bi-directional pressure valve assembly; 41. a pressure valve; 42. a seal ring; 43. a flow through groove; 5. and an air pipe.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1 to 3, the present embodiment provides a breather valve including a housing 1 and a housing cover 2; the shell 1 is provided with the first air hole 18 and the second air hole 13, the second air hole 13 is communicated with the air pipe 5 and can be communicated with the inside of the container, the inside of the shell 1 is provided with an air flow channel, the air flow channel is communicated with the first air hole 18 and the second air hole 13, a filter screen 3 is arranged in the air flow channel, gas can be filtered through the filter screen 3, impurities are intercepted in the filter screen 3, the impurities are greatly reduced from entering the container, and the medium is greatly prevented from being polluted; the shell 1 is provided with a connector tube which is communicated with the first air hole 18, the connector tube is provided with a first ventilation notch 16, the length direction of the first ventilation notch 16 is the same as the length direction of the connector tube, the connector tube is provided with a shell cover 2, the shell cover 2 is provided with a second ventilation notch 22, the second ventilation notch 22 corresponds to the first ventilation notch 16, when the shell cover 2 is arranged on the shell 1, the second ventilation notch 22 and the first ventilation notch 16 form an air passage to realize the communication of a breather valve and the atmosphere, the first ventilation notch 16 is arranged at the lower part of the connector tube, the second ventilation notch 22 is arranged at the lower part of the shell cover 2, and the entry of impurities can be reduced by arranging the first ventilation notch 16 and the second ventilation notch 22 at the lower part, so that the service life of the filter screen 3 is prolonged; in order to realize the installation of the shell cover 2, the interface tube is provided with a clamping groove 17, the length direction of the clamping groove 17 is the same as that of the interface tube, the inner side of the shell cover 2 is correspondingly provided with a clamping block 23, the clamping block 23 is in interference fit with the clamping groove 17, the shell cover 2 is conveniently installed through the clamping block 23 and the clamping groove 17, and meanwhile, the interface tube has a positioning function, and the ventilation notch II 22 and the ventilation notch I16 are ensured to correspondingly form an air passage to be communicated with the atmosphere; a clamping ring 15 is coaxially arranged on the outer circumferential surface of the interface tube, and the shell cover 2 is prevented from falling off by the clamping ring 15.

As shown in fig. 3, 5 and 6, as the filter screen 3 is arranged in the breather valve, impurities in the air can be intercepted, but as the filter screen 3 is used, the internal impurities are continuously increased, so that the resistance of the filter screen 3 to the air is increased, the air flow is seriously influenced, the function of balancing the air pressure of the breather valve is influenced, in order to avoid the adverse influence of the filter screen 3 after blocking, the air flow channel comprises a filter channel 11 and an emergency channel 12, both ends of the filter channel 11 and the emergency channel 12 are respectively communicated with the first air hole 18 and the second air hole 13, the filter screen 3 is arranged in the filter channel 11, and the emergency channel 12 is internally provided with a bidirectional pressure valve component 4; the emergency channel 12 and the bidirectional pressure valve assembly 4 are arranged, so that the ventilation of the breather valve can be ensured after the filter screen 3 is blocked, and the air pressure balance function of the breather valve is ensured; the pressure difference between the inside of the container and the atmosphere after the filter screen 3 is blocked is P1, the opening pressure of the bidirectional pressure valve assembly 4 is P2, P1 is less than P2 and less than 0.2bar, and through the arrangement of the pressure, the bidirectional pressure valve assembly 4 can be prevented from realizing gas conduction when the filter screen 3 works normally so that part of gas carries impurities into the container.

As shown in fig. 4, in order to ensure that the bi-directional flow of gas realizes the air pressure balance function of the breather valve, the bi-directional pressure valve assembly 4 in this embodiment may adopt the following specific structure: the bidirectional pressure valve assembly 4 comprises a through-flow column, the through-flow column is in interference fit with the emergency channel 12, two through-flow grooves 43 are symmetrically arranged on the through-flow column, the length direction of the through-flow grooves 43 is the same as that of the through-flow column, pressure valves 41 are arranged on the two through-flow grooves 43, the pressure valves 41 are of cambered surface structures, the pressure valves 41 are made of elastic materials, in the specific embodiment, the pressure valves 41 and the through-flow column are of integrated structures, the pressure valves 41 and the through-flow column are made of rubber materials, the opening directions of the two pressure valves 41 are opposite, when the pressure valves 41 are subjected to pressure from the opening direction, the pressure valves 41 are deformed and clung to the inner wall of the emergency channel 12, and when the pressure valves 41 are subjected to pressure from the back direction, gaps are generated between the deformation of the pressure valves 41 and the inner wall of the emergency channel 12 so that a gas path is conducted; the two-way conduction of the two-way pressure valve group can be realized through the two pressure valves 41 with opposite opening directions, so that the balance function of the breather valve is effectively ensured; in order to improve the tightness, a sealing ring 42 is arranged on the outer circumferential surface of the through-flow column, and gas is prevented from flowing through a gap between the through-flow column and the emergency channel 12 by the sealing ring 42.

As shown in fig. 1, in the present embodiment, in order to facilitate the installation of the present breather valve, the upper end of the housing 1 is provided with a fixing hole 14, which can be installed at a corresponding position by a bolt.

The working process of the breather valve is as follows:

As shown in fig. 5 and 6, when the pressure Pi in the container is greater than the atmospheric pressure Pe, the gas in the container is led to the atmosphere through the filter screen 3 in the filter channel 11, so as to prevent the pressure Pi in the container from increasing continuously to generate adverse effects, and as the filter screen 3 is blocked, the pressure difference P1 between the interior of the container and the atmosphere increases continuously, and reaches the opening pressure P2 of the bidirectional pressure valve assembly 4, at this time, one of the pressure valves 41 receives the back pressure to realize conduction, and the gas in the container is led to the atmosphere from the emergency channel 12, so that the decompression effect of the breathing valve is ensured; when the pressure Pi in the container is smaller than the atmospheric pressure Pe, the atmospheric gas is led to the container through the filter screen 3 in the filter channel 11, and as the filter screen 3 is blocked, the pressure difference P1 between the interior of the container and the atmosphere is increased continuously, and the opening pressure P2 of the two-way pressure valve assembly 4 is reached, at this time, the other pressure valve 41 receives the back pressure to realize conduction, and the atmospheric gas is led to the container from the emergency channel 12 to realize pressurization.

The breather valve can be installed on containers such as a differential mechanism, a gearbox, a transfer case or a fuel tank and the like for use.

From the above detailed description, it can be seen that the present utility model has the following advantages:

1. The gas can be filtered through the filter screen 3, impurities are intercepted in the filter screen 3, the impurities are greatly reduced from entering the container, and the medium is greatly prevented from being polluted;

2. The emergency channel 12 and the bidirectional pressure valve assembly 4 are arranged, so that the ventilation of the breather valve can be ensured after the filter screen 3 is blocked, and the air pressure balance function of the breather valve is ensured;

3. The two-way conduction of the two-way pressure valve group can be realized through the two pressure valves 41 with opposite opening directions, so that the balance function of the breather valve is ensured;

4. Gas is prevented from flowing through the clearance between the through-flow column and the emergency channel 12 by a seal ring 42;

5. The first ventilation notch 16 and the second ventilation notch 22 are arranged at the lower part, so that the entry of impurities can be reduced, and the service life of the filter screen 3 can be prolonged;

6. The shell cover 2 is conveniently installed through the clamping block 23 and the clamping groove 17, and the shell cover has a positioning function, so that the ventilation notch II 22 and the ventilation notch I16 form an air passage correspondingly;

7. the cover 2 is prevented from falling off by the snap ring 15.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a breather valve, including casing (1), its characterized in that is provided with gas pocket one (18) and gas pocket two (13) on casing (1), casing (1) inside is provided with the air current passageway, air current passageway and gas pocket one (18) and gas pocket two (13) intercommunication are provided with filter screen (3) in the air current passageway, the air current passageway includes filter channel (11) and emergency channel (12), filter channel (11) and emergency channel (12) both ends all communicate with gas pocket one (18) and gas pocket two (13) respectively, filter screen (3) set up in filter channel (11), be provided with bi-directional pressure valve assembly (4) in emergency channel (12).

2. A breather valve according to claim 1, characterized in that the opening pressure of the bi-directional pressure valve assembly (4) is greater than the pressure difference between the interior of the container and the atmosphere after the filter screen (3) has been plugged.

3. The breather valve of claim 2, wherein the bi-directional pressure valve assembly (4) comprises a through-flow column, the through-flow column is in interference fit with the emergency channel (12), two through-flow grooves (43) are symmetrically arranged on the through-flow column, the length direction of the through-flow grooves (43) is the same as the length direction of the through-flow column, pressure valves (41) are arranged on the two through-flow grooves (43), the pressure valves (41) are in cambered surface structures, the pressure valves (41) are made of elastic materials, and the opening directions of the two pressure valves (41) are opposite.

4. A breather valve according to claim 3, characterized in that the pressure valve (41) is made of rubber.

5. A breather valve according to claim 3, characterized in that the pressure valve (41) and the through-flow column are of an integrated structure, and the pressure valve (41) and the through-flow column are made of rubber.

6. The breather valve of claim 5, wherein a seal ring (42) is provided on an outer circumferential surface of the through-flow column.

7. The breather valve of claim 1, wherein the housing (1) is provided with a mouthpiece, the mouthpiece is communicated with the first air hole (18), the mouthpiece is provided with a first ventilation notch (16), the mouthpiece is provided with a housing cover (2), the housing cover (2) is provided with a second ventilation notch (22), the second ventilation notch (22) corresponds to the first ventilation notch (16), the first ventilation notch (16) is arranged at the lower part of the mouthpiece, and the second ventilation notch (22) is arranged at the lower part of the housing cover (2).

8. The breather valve of claim 7, wherein the interface tube is provided with a clamping groove (17), the length direction of the clamping groove (17) is the same as the length direction of the interface tube, and the inner side of the shell cover (2) is correspondingly provided with a clamping block (23), and the clamping block (23) is in interference fit with the clamping groove (17).

9. A breather valve according to claim 8, wherein the mouthpiece is provided with a snap ring (15) coaxially on the outer circumferential surface.