CN220667966U

CN220667966U - Air breather valve

Info

Publication number: CN220667966U
Application number: CN202322276578.7U
Authority: CN
Inventors: 谢峰; 乔文海; 肖湘宁
Original assignee: Haifutaike Hydraulic Technology Shanghai Co ltd
Current assignee: Haifutaike Hydraulic Technology Shanghai Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-26
Anticipated expiration: 2033-08-23

Abstract

The application relates to an air breather valve, including the base, be connected with the casing on the base, be equipped with the breathing chamber in the casing, offered the air vent on the casing, casing one side is kept away from to the base is equipped with the connecting pipe with oil tank threaded connection, is equipped with the oil filter core that is arranged in the filtration air to drop in the connecting pipe, breathes the intracavity and is equipped with the dust filter core that is used for filtering the dust. When the temperature of oil in the oil tank reduces to reduce the air pressure in the oil tank, outside air enters into the breathing cavity through the vent, dust is filtered when the outside air passes through the dust filter element, the outside air continues to enter into the oil tank from the breathing cavity through the connecting pipe, the internal and external air pressure of the oil tank is balanced, the oil filter element in the connecting pipe can prevent the oil in the oil tank from being discharged along with gas, and the outside air passes through the breather valve to enter into the process of the oil tank, and the dust is filtered by the dust filter element. This application has the effect of avoiding the dust in the air to get into the oil tank through the breather valve.

Description

Air breather valve

Technical Field

The present application relates to the field of breather valves, and in particular to an air breather valve.

Background

When working, the engineering machinery is usually provided with various hydraulic devices, the hydraulic devices are matched with an oil tank to store oil, the hydraulic temperature in the oil tank is changed frequently, the air pressure in the oil tank is changed, in order to balance the air pressure inside and outside, the oil tank is basically provided with a breather valve,

aiming at the related technology, when the temperature of the oil in the oil tank is reduced, the air pressure in the oil tank is reduced, the difference between the internal pressure and the external pressure is formed, and when the external air enters the oil tank through the breather valve, dust is difficult to avoid entering the oil tank along with the air, so that the pollution of the oil is caused.

Disclosure of Invention

In order to avoid dust in the air from entering the oil tank through the breather valve, the present application provides an air breather valve.

The application provides an air breather valve adopts following technical scheme:

the utility model provides an air breather valve, includes the base, be connected with the casing on the base, be equipped with the breathing chamber in the casing, set up the air vent that is used for air business turn over to breathe the chamber on the casing, casing one side is kept away from to the base and is equipped with the connecting pipe, connecting pipe and breathing chamber intercommunication, connecting pipe and oil tank threaded connection are equipped with the oil filter core that is arranged in filtering oil in the air in the connecting pipe, breathe the intracavity and be equipped with the dust filter core that is used for filtering the dust, the dust filter core encircles the connecting pipe setting and dust filter core both ends respectively with casing and base butt.

Through adopting above-mentioned technical scheme, when the fluid temperature in the oil tank reduces and leads to the atmospheric pressure in the oil tank to reduce, the atmospheric pressure in the oil tank is less than external atmospheric pressure, external air enters into the breathing chamber through the air vent, the dust is filtered when external air passes through the dust filter core, external air continues to get into the oil tank inside from the breathing chamber through the connecting pipe, the inside and outside atmospheric pressure of balanced oil tank, the oil filter core in the connecting pipe can prevent the fluid in the oil tank along with gaseous discharge. In the process that outside air enters the oil tank through the breather valve, dust is filtered by the dust filter element, so that dust in the air is prevented from entering the oil tank through the breather valve, and the cleaning of oil in the oil tank is facilitated.

Optionally, the base is close to oil tank one end and is equipped with the sealing washer that is used for reinforcing sealing performance, and the sealing washer surrounds the connecting pipe setting, and sealing washer keeps away from base one end and oil tank butt.

Through adopting above-mentioned technical scheme, sealed pad adopts soft rubber material to make, has excellent sealing performance, and when the breather valve was installed on the oil tank, base and oil tank will seal the pad butt between the two and compress, help improving the leakproofness of connection, prevent the oil leak.

Optionally, the base is provided with a receiving groove matched with the dust filter element, the shell is provided with a clamping groove matched with the dust filter element, one end of the dust filter element, which is close to the base, is embedded in the receiving groove, and one side of the dust filter element, which is close to the shell, is embedded in the clamping groove.

Through adopting above-mentioned technical scheme, inlay respectively in accepting groove and joint inslot at dust filter core both ends, have spacing effect to the dust filter core, can prevent that the dust filter core from producing the displacement in breathing the intracavity, can increase the area of contact between dust filter core and base and dust filter core and the casing simultaneously, help improving the leakproofness between dust filter core and base and dust filter core and the casing, prevent that the air from getting into the breathing chamber from the gap of junction.

Optionally, the shell is screwed on the base.

Through adopting above-mentioned technical scheme, after the dust filter core is used one end time, because of the dust accumulation that its surface filtered out, can increase the damping that the air passed the dust filter core, influence the ability of breather valve balanced inside and outside atmospheric pressure. The shell adopts threaded connection's mode to dismantle and connects on the base, is convenient for regularly change the dust filter core, helps the long-term high-efficient use of breather valve.

Optionally, fixedly connected with is used for bearing oil filter core's support ring in the connecting pipe, support ring and oil filter core butt just are located oil filter core and keep away from casing one side, are equipped with the clamp ring that is used for the fixed oil filter core in the connecting pipe, and clamp ring and oil filter core butt just clamp ring set up in oil filter core and are close to casing one side, fixedly connected with connecting rod between clamp ring and the casing.

Through adopting above-mentioned technical scheme, after long-term use, a large amount of fluid of oil filter core surface accumulation influences its air passing efficiency, and then influences the atmospheric pressure adjustment ability of breather valve, and the oil filter core butt is between carrier ring and clamp ring, is connected through the connecting rod between clamp ring and the casing, and the clamp ring can be along with the casing together quick detach, can realize the quick replacement of oil filter core, and then keeps the atmospheric pressure balance ability of breather valve for a long time.

Optionally, the bearing ring is close to oil filter core one side fixedly connected with sealing strip, and the sealing strip head and the tail meet the setting, and the sealing groove with sealing strip looks adaptation has been seted up to the oil filter core, and the sealing strip inlays in the sealing groove.

Through adopting above-mentioned technical scheme, in the sealing strip embedding seal groove, help reinforcing sealing performance between support ring and the oil filter core, prevent that the air from passing in the gap between support ring and the oil filter core, improve the filtration ability of breather valve, prevent that the oil steam in the oil tank from volatilizing to in the air.

Optionally, fixedly connected with bearing net on the bearing ring, bearing net and oil filter core keep away from casing one end butt, fixedly connected with compresses tightly the net on the clamp ring, compresses tightly net and oil filter core and is close to casing one end butt.

Through adopting above-mentioned technical scheme, compress tightly both ends and oil filter core butt about two respectively with the bearing net, under the condition that does not influence the air and pass through, make oil filter core both ends atress more even, avoid oil filter core to appear great deformation and drop from the support ring after long-term use.

Optionally, a fitting groove for fitting finger insertion is formed in the outer surface of the shell.

Through adopting above-mentioned technical scheme, when changing dust filter core or oily filter core, need rotate the casing and make its and base separation, set up the cooperation groove, staff's finger inlays in the cooperation inslot, helps holding the casing more firmly, is convenient for with casing and base separation fast laborsaving.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the temperature of the oil in the oil tank is reduced to cause that the air pressure in the oil tank is smaller than the external atmospheric pressure, external air enters the breathing cavity through the air vent, dust is filtered when the external air passes through the dust filter element, and the external air continuously enters the oil tank from the breathing cavity through the connecting pipe, so that dust in the air is prevented from entering the oil tank through the breathing valve, and the cleanness of the oil in the oil tank is maintained;

2. after a period of use, the surface of oil filter core can gather a large amount of fluid, influences its air through efficiency and breather valve's atmospheric pressure adjustment ability, and oil filter core butt is between supporting ring and clamp ring, is connected through the connecting rod between clamp ring and the casing, and then makes the clamp ring can pull down together fast along with the casing, and the quick replacement of the oil filter core of being convenient for keeps the atmospheric pressure balance ability of breather valve for a long time.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of the internal structure of an embodiment of the present application.

Fig. 3 is an exploded schematic view of an embodiment of the present application.

Reference numerals illustrate: 1. a base; 11. a sealing gasket; 12. a receiving groove; 2. a housing; 21. a breathing chamber; 211. a vent; 22. a clamping groove; 23. a mating groove; 3. a connecting pipe; 4. an oil filter element; 41. sealing grooves; 5. a dust filter element; 6. a support ring; 61. a sealing strip; 62. a support net; 7. a clamp ring; 71. compacting the net; 8. and (5) connecting a rod.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses an air breather valve.

Referring to fig. 1 and 2, an air breather valve comprises a base 1, wherein the base 1 is a circular plate material and is attached to the surface of an oil tank, and a shell 2 is installed at one end, far away from the oil tank, of the base 1. The housing 2 is internally provided with a breathing cavity 21 for installing various components, and the breathing cavity 21 is directly communicated with the upper surface of the housing 2. The housing 2 is provided with a plurality of vents 211 for air to enter and exit the breathing chamber 21. One side of the base 1, which is far away from the shell 2, is fixedly connected with a connecting pipe 3, one end of the connecting pipe 3 is communicated with the breathing cavity 21, and the other end of the connecting pipe is in threaded connection with the oil tank. An oil filter element 4 is arranged in the connecting pipe 3 and used for filtering oil drops in air, and a dust filter element 5 is arranged in the breathing cavity 21 and used for filtering dust in air. The dust filter core 5 is wholly hollow cylindrical and surrounds the connecting pipe 3, and the dust filter core 5 is abutted between the shell 2 and the base 1. When the temperature of the oil in the oil tank decreases to reduce the air pressure in the oil tank, the air pressure in the oil tank is smaller than the external atmospheric pressure, and external air enters the breathing chamber 21 through the air vent 211. When the dust filter element 5 passes through, dust in the outside air is filtered, the outside air enters the oil tank from the breathing cavity 21 through the connecting pipe 3 to balance the internal and external air pressure of the oil tank, and the oil filter element 4 in the connecting pipe 3 can prevent oil in the oil tank from being discharged along with gas. In the process that external air enters the oil tank through the breather valve, dust is filtered by the dust filter element 5, so that the dust in the air is prevented from entering the oil tank through the breather valve, and the cleaning of oil in the oil tank is facilitated to be maintained.

Referring to fig. 2 and 3, a sealing gasket 11 is arranged at one end, close to the oil tank, of the base 1, the sealing gasket 11 is made of soft rubber materials, one end, far away from the base 1, of the sealing gasket 11 is abutted against the upper surface of the oil tank, the sealing gasket 11 is extruded by the base 1 and the oil tank, sealing performance between the base 1 and the oil tank is enhanced, and oil leakage is prevented.

Referring to fig. 2 and 3, a receiving groove 12 is formed in the base 1, and the shape and the size of the receiving groove 12 are matched with those of the dust filter element 5; the clamping groove 22 is formed in the shell 2, the shape and the size of the clamping groove 22 are matched with those of the dust filter element 5, two ends of the dust filter element 5 are respectively embedded in the bearing groove 12 and the clamping groove 22, the bearing groove 12 and the clamping groove 22 cooperate to limit the dust filter element 5, the dust filter element 5 is prevented from being displaced in the breathing cavity 21, meanwhile, the contact area between the dust filter element 5 and the base 1 and the contact area between the dust filter element 5 and the shell 2 are increased, the tightness between the dust filter element 5 and the base 1 and the tightness between the dust filter element 5 and the shell 2 are improved, and air is prevented from entering the breathing cavity 21 from a gap at a connecting part.

Referring to fig. 2 and 3, after the dust filter 5 is used for a certain period of time, the dust filtered out from the surface of the dust filter is accumulated, so that the damping of the air passing through the dust filter 5 is increased, and the capability of the breather valve for balancing the internal and external air pressures is affected. The shell 2 and the base 1 are connected in a threaded mode, the shell 2 can be rapidly detached from the base 1, the dust filter element 5 is convenient to replace regularly, and long-term efficient use of the breather valve is facilitated.

Referring to fig. 2 and 3, after long-term use, a large amount of oil accumulates on the surface of the oil filter element 4, which affects the air passing efficiency thereof and thus the air pressure regulating ability of the breather valve. The connecting pipe 3 is internally fixedly connected with a supporting ring 6, the supporting ring 6 is abutted with the oil filter core 4 and is positioned on one side, away from the shell 2, of the oil filter core 4, a compression ring 7 is arranged in the connecting pipe 3, and the compression ring 7 is abutted with the oil filter core 4 and is arranged on one side, close to the shell 2, of the oil filter core 4. The compression ring 7 is fixedly connected with the shell 2 through the connecting rod 8, the compression ring 7 can be quickly detached along with the shell 2, the quick replacement of the oil filter core 4 can be realized, and then the air pressure balance capacity of the breather valve is kept for a long time.

Referring to fig. 2 and 3, sealing strip 61 is fixedly connected with one side of support ring 6 close to oil filter core 4, sealing strip 61 end to end sets up and wholly is annular, and oil filter core 4 has seted up seal groove 41, and seal groove 41 shape size and sealing strip 61 looks adaptation, and sealing strip 61 inlays in seal groove 41, helps reinforcing support ring 6 and oil filter core 4 sealing performance, prevents that the air from passing in the gap between support ring 6 and the oil filter core 4, prevents that the oil steam in the oil tank from volatilizing to the air and causing danger.

Referring to fig. 2 and 3, a supporting net 62 is fixedly connected to one end of the supporting ring 6, which is close to the oil filter core 4, the supporting net 62 is abutted to one end, which is far away from the shell 2, of the oil filter core 4, a compressing net 71 is fixedly connected to one end, which is close to the oil filter core 4, of the compressing ring 7, and the compressing net 71 is abutted to one end, which is close to the shell 2, of the oil filter core 4. The pressing net 71 and the supporting net 62 are respectively abutted with the oil filter core 4 from the upper end and the lower end, so that the stress at the two ends of the oil filter core 4 is more uniform under the condition that the air passing is not influenced, and the oil filter core 4 is prevented from falling off from the supporting ring 6 due to larger deformation after long-term use.

Referring to fig. 2 and 3, when the dust filter element 5 or the oil filter element 4 is replaced, the casing 2 needs to be rotated to be separated from the base 1, and the matching groove 23 is formed on the outer surface of the casing 2, so that the casing 2 can be held more firmly by matching with the finger embedding of a worker, and the casing 2 can be separated from the base 1 quickly and easily.

The implementation principle of the air breather valve in the embodiment of the application is as follows: when the temperature of the oil in the oil tank decreases to reduce the air pressure in the oil tank, the air pressure in the oil tank is less than the external atmospheric pressure, and external air enters the breathing chamber 21 through the air vent 211. When the dust filter core 5 passes through, dust in the outside air is filtered, air enters the oil tank from the breathing cavity 21 through the connecting pipe 3, the air pressure inside and outside the oil tank is balanced, and the oil filter core 4 in the connecting pipe 3 can prevent oil in the oil tank from being discharged along with gas. In the process that external air enters the oil tank through the breather valve, dust is filtered by the dust filter element 5, so that the dust in the air is prevented from entering the oil tank through the breather valve, and the cleaning of oil in the oil tank is facilitated to be maintained.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An air breather valve, comprising a base (1), characterized in that: be connected with casing (2) on base (1), be equipped with breathing chamber (21) in casing (2), set up on casing (2) and be used for air business turn over breathing chamber (21) vent (211), casing (2) one side is kept away from to base (1) is equipped with connecting pipe (3), connecting pipe (3) and breathing chamber (21) intercommunication, connecting pipe (3) and oil tank threaded connection are equipped with in connecting pipe (3) and are used for filtering oil filter core (4) of oil drop in the air, be equipped with in breathing chamber (21) and be used for filtering dust filter core (5), dust filter core (5) encircle connecting pipe (3) setting and dust filter core (5) both ends respectively with casing (2) and base (1) butt.

2. An air breathing valve according to claim 1 wherein: the base (1) is close to oil tank one end and is equipped with sealed pad (11) that are used for reinforcing sealing performance, and sealed pad (11) encircle connecting pipe (3) and set up, and sealed pad (11) are kept away from base (1) one end and oil tank butt.

3. An air breathing valve according to claim 1 wherein: the dust filter is characterized in that a receiving groove (12) matched with the dust filter element (5) is formed in the base (1), a clamping groove (22) matched with the dust filter element (5) is formed in the shell (2), one end, close to the base (1), of the dust filter element (5) is embedded in the receiving groove (12), and one side, close to the shell (2), of the dust filter element (5) is embedded in the clamping groove (22).

4. An air breathing valve according to claim 1 wherein: the shell (2) is connected to the base (1) in a threaded manner.

5. An air breathing valve according to claim 1 wherein: fixedly connected with is used for bearing support ring (6) of oily filter core (4) in connecting pipe (3), support ring (6) and oily filter core (4) butt just are located oily filter core (4) and keep away from casing (2) one side, be equipped with in connecting pipe (3) and be used for fixed oily filter core (4) clamp ring (7), clamp ring (7) and oily filter core (4) butt and clamp ring (7) set up in oily filter core (4) are close to casing (2) one side, fixedly connected with connecting rod (8) between clamp ring (7) and casing (2).

6. An air breathing valve according to claim 5 wherein: the sealing groove (41) matched with the sealing strip (61) is formed in the oil filter element (4), and the sealing strip (61) is embedded in the sealing groove (41).

7. An air breathing valve according to claim 5 wherein: the bearing ring (6) is fixedly connected with a bearing net (62), the bearing net (62) is abutted against one end, far away from the shell (2), of the oil filter element (4), the compression ring (7) is fixedly connected with a compression net (71), and the compression net (71) is abutted against one end, close to the shell (2), of the oil filter element (4).

8. An air breathing valve according to claim 1 wherein: the outer surface of the shell (2) is provided with a matching groove (23) for matching finger embedding.