CN215568238U

CN215568238U - Breather valve

Info

Publication number: CN215568238U
Application number: CN202120991761.3U
Authority: CN
Inventors: 叶海游; 叶茂; 林微琴; 周谦; 王天贵; 刘海锋; 王西峰
Original assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Current assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-01-18
Anticipated expiration: 2031-05-06

Abstract

A breather valve comprises a valve body, a top cover, a breathing valve component and a breathing valve component, wherein a main channel, a breathing channel and a breathing channel are arranged in the valve body, the main channel is communicated with the breathing channel through a breathing valve port, mounting ports are arranged above the breathing valve port and the breathing valve port, the top cover covers the mounting ports, guide pipes are arranged on the breathing valve port and the breathing valve port of the top cover, the breathing valve component seals the breathing valve port and is positioned in the breathing channel, the breathing valve component seals the breathing valve port and is positioned in the main channel, the breathing valve component and the breathing valve component have the same structure and comprise a valve disc and a central rod which are coaxially fixed, the central rod is inserted into the guide pipes and forms sliding fit, an accelerating spring which is positioned above the central rod is arranged in the guide pipes, the upper end of the accelerating spring is fixed with the position of the guide pipes, and a gap is reserved between the lower end of the accelerating spring and the central rod, the acceleration of the falling of the valve disc can be improved, the valve disc is closed more quickly, and the differential pressure floating amount after balance adjustment can be reduced.

Description

Breather valve

Technical Field

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

Background

The breather valve is a valve which can ensure that the storage tank space is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere when the pressure exceeds or is lower than the pressure range. The function of the device is to prevent the storage tank from being damaged due to overpressure or vacuum, and simultaneously, the evaporation loss of the stored liquid can be reduced.

Under the working condition of large pressure difference of the existing breather valve, the speed of the valve is low when the valve is breathed and closed, excessive convection is easy to occur, and small pressure difference still exists after balance adjustment, namely the balance error value is overlarge.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a breather valve:

a breather valve comprises a valve body, a top cover, an exhalation valve piece and an inhalation valve piece, wherein a main channel, an exhalation channel and an inhalation channel are arranged in the valve body, the main channel is communicated with the exhaling channel through an exhaling valve port, the main channel is communicated with the inhaling channel through an inhaling valve port, mounting ports are arranged above the exhalation valve port and the inhalation valve port, the mounting ports are covered by the top cover, the top cover is provided with guide pipes at the exhalation valve port and the inhalation valve port, the exhalation valve piece seals the exhalation valve port and is positioned in the exhalation channel, the inhalation valve member closes the inhalation valve port and is positioned in the main channel, the exhalation valve member and the inhalation valve member have the same structure and both comprise a valve disc and a central rod which are coaxially fixed, the central rod is inserted into the guide tube and forms sliding fit, an accelerating spring positioned above the central rod is arranged in the guide tube, the upper end of the accelerating spring is fixed with the position of the guide tube, and a gap is reserved between the lower end of the accelerating spring and the central rod.

Preferably, the both ends of stand pipe are penetrating, and top threaded connection has the screw, accelerating spring's upper end is fixed in the bottom of screw, the fixed mounting of accelerating spring of being convenient for.

Preferably, the exhalation valve port and the inhalation valve port are both provided with sealing components, each sealing component comprises a rubber top ring and a ring cover, each rubber top ring comprises a fastening portion of an outer ring and a top convex portion located on the ring, the two rubber top rings are respectively located above the exhalation valve port and the inhalation valve port, the two ring covers are in threaded fit with the tops of the exhalation valve port and the inhalation valve port and respectively press the fastening portions of the two rubber top rings, the top convex portions of the two rubber top rings respectively penetrate out of the inner sides of the two ring covers, the top convex portions are used for closing the valve disc in a propping mode, the sealing effect is improved, and the rubber top rings are convenient to replace to ensure a long-term good sealing function.

Preferably, the automatic breathing valve further comprises a base, the base is in threaded fit with the lower end of the valve body, the base is provided with a through cavity, the main channel is fixedly provided with a pressing rod penetrating into the through cavity, a self-locking plug piece is arranged in the through cavity and comprises a self-locking spring and an I-shaped sliding plug, the middle section of the sliding plug is in sliding fit with a sleeve fixedly arranged in the through cavity, the self-locking spring is sleeved on the middle section of the sliding plug, the lower end of the self-locking spring is abutted against and matched with the upper end of the sleeve, the pressing rod penetrates into a plugging port arranged in the through cavity and abuts against the upper end of the sliding plug, the sliding plug can abut against and is sealed by the separating base and the valve body, the valve body and the self-locking spring are required to be replaced when the valve body, the valve body and the valve body are failed or damaged to cause the work of incapable of breathing, the base does not need to be detached, the sliding plug is enabled to move upwards in the separating process of the valve body until the sliding plug is sealed and plugged in the separating process, realize the auto-lock and seal, reduce and leak and run off.

Preferably, the top of the sliding plug is provided with a groove, the bottom surface of the pressure lever is a spherical surface, and the pressure lever is inserted into the groove to abut against the sliding plug, so that the pressure lever is convenient to abut against and reduce abrasion.

The utility model has the following beneficial effects: the exhalation is the same with the suction theory of operation, it makes the valve disc shift up so that exhalation valve port or suction valve port open all to have pressure differential in the valve disc both sides, the balance adjustment in-process, will fall back until recovering the encapsulated situation under the action of gravity, when pressure differential is great, the distance that the valve disc can shift up is also great, well core rod will lean on and compression spring, can restrict flow, also can improve the acceleration that the valve disc falls back simultaneously, seal more fast, can reduce the pressure differential floating volume after the balance adjustment.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a schematic view of the installation of the exhalation valve piece or the inhalation valve piece of the embodiment.

Fig. 3 is a schematic view of the base mounting of the embodiment.

FIG. 4 is a schematic diagram of the self-locking plug of the embodiment.

1. A valve body; 2. a top cover; 3. an exhalation valve piece; 4. a suction valve member; 5. a main channel; 6. an exhalation path; 7. A suction channel; 8. an exhalation valve port; 9. a suction valve port; 10. an installation port; 11. a guide tube; 12. a valve disc; 13. a center pole; 14. an acceleration spring; 15. a screw; 16. a rubber top ring; 17. a ring cover; 18. a fastening section; 19. a top convex portion; 20. a base; 21. a cavity is communicated; 22. a pressure lever; 23. a self-locking plug member; 24. a self-locking spring; 25. a sliding plug; 26. a sleeve; 27. plugging the opening; 28. a groove; 29. and (4) a spherical surface.

Detailed Description

The present invention will be further described with reference to the accompanying drawings 1-4 and the embodiments.

A breather valve comprises a valve body 1, a top cover 2, a base 20, a breathing-out valve member 3 and a breathing-in valve member 4, wherein a main channel 5, a breathing-out channel 6 and a breathing-in channel 7 are arranged in the valve body 1, the main channel 5 is communicated with the breathing-out channel 6 through a breathing-out valve port 8, the main channel 5 is communicated with the breathing-in channel 7 through a breathing-in valve port 9, the base 20 is in threaded fit with the lower end of the valve body 1, the base 20 is provided with a through cavity 21, the main channel 5 is fixedly provided with a pressure rod 22 penetrating into the through cavity 21, mounting ports 10 are respectively arranged above the breathing-out valve port 8 and the breathing-in valve port 9, the top cover 2 covers the mounting ports 10, the top cover 2 is provided with guide pipes 11 on the breathing-out valve port 8 and the breathing-in valve port 9, the breathing-out valve member 3 seals the breathing-out valve port 8 and is positioned in the breathing-in channel 6, the breathing-in valve member 4 seals the breathing-in valve port 9 and is positioned in the main channel 5, the breathing-out valve port 8 and the breathing-in valve port 9 are both provided with sealing components, exhalation valve member 3 is the same with inhaling valve member 4's structure and all includes coaxial fixed valve disc 12 and central rod 13, and central rod 13 inserts in the stand pipe 11 and constitutes the cooperation of sliding, and the both ends of stand pipe 11 are penetrating, and top threaded connection has screw 15, is equipped with the accelerating spring 14 that is located central rod 13 top in the stand pipe 11, and the bottom and the lower extreme at screw 15 leave the clearance with central rod 13 at the upper end of accelerating spring 14.

The sealing assembly comprises rubber top rings 16 and ring covers 17, each rubber top ring 16 comprises a fastening part 18 of an outer ring and a top convex part 19 of the outer ring, the two rubber top rings 16 are respectively positioned above the exhalation valve port 8 and the inhalation valve port 9, the two ring covers 17 are in threaded fit with the fastening parts 18 of the two rubber top rings respectively above the exhalation valve port 8 and the inhalation valve port 9, the top convex parts 19 of the two rubber top rings 16 respectively penetrate out of the inner sides of the two ring covers 17, the top convex parts 19 are used for abutting against and sealing the valve disc 12, the sealing effect is improved, and the rubber top rings 16 are convenient to replace to ensure a long-term good sealing function.

Lead to being equipped with in the chamber 21 from the locking plug member 23, from the locking plug member 23 including the sliding plug 25 of auto-lock spring 24 and I-shaped, the middle section of sliding plug 25 is slided and is cooperated in the sleeve pipe 26 that leads to chamber 21 internal fixation and be equipped with, the middle section of sliding plug 25 is located to auto-lock spring 24 cover, and the lower extreme of auto-lock spring 24 and the cooperation is leaned on in the upper end top of sleeve pipe 26, depression bar 22 penetrates the shutoff mouth 27 that leads to chamber 21 and be equipped with and the upper end of roof pressure sliding plug 25, can make the sliding plug 25 top lean on closed shutoff mouth 27 through separation base 20 and valve body 1.

The working principle is as follows: the mounting structure is shown in fig. 1, the base 20 is mounted on container equipment such as a required storage tank, a lower sliding plug 25 penetrates through a pressure rod 22 in the valve body 1, a blocking port 27 is in a long-term open state, the exhalation and inhalation working principles in the valve body 1 are the same, pressure difference exists on two sides of the valve disc 12, the valve disc 12 moves upwards to open an exhalation valve port 8 or an inhalation valve port 9, in the balance adjustment process, the valve disc falls back under the action of gravity until the valve disc returns to a closed state, when the pressure difference is large, the distance that the valve disc 12 moves upwards is large, the central rod 13 abuts against and compresses a spring, the flow can be limited, the acceleration of the valve disc 12 falling back can be improved, the valve disc is closed quickly, and the pressure difference floating amount (balance error value) after the balance adjustment can be reduced. The base 20 mainly has the effect that loss can be reduced in the replacement or maintenance process, the valve piece 4 needs to be replaced when the valve piece 3 is inhaled or the valve body 1 fails or is damaged to cause the work of unable breathing, the base 20 does not need to be detached, the compression bar 22 moves upwards in the separation process of the valve body 1, the sliding plug 25 also moves upwards under the action of the self-locking spring 24 until the sliding plug 25 seals the plugging port 27, self-locking sealing is realized, and leakage loss is reduced.

It should be understood that the above-described embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And such obvious changes and modifications which are within the spirit of the utility model are deemed to be covered by the present invention.

Claims

1. A breather valve, characterized in that: the exhaust valve comprises a valve body (1), a top cover (2), an exhaust valve (3) and an intake valve (4), wherein a main channel (5), an exhaust channel (6) and an intake channel (7) are arranged in the valve body (1), the main channel (5) is communicated with the exhaust channel (6) through an exhaust valve port (8), the main channel (5) is communicated with the intake channel (7) through an intake valve port (9), mounting ports (10) are respectively arranged above the exhaust valve port (8) and the intake valve port (9), the top cover (2) covers the mounting ports (10), guide pipes (11) are respectively arranged on the exhaust valve port (8) and the intake valve port (9) of the top cover (2), the exhaust valve (3) seals the exhaust valve port (8) and is positioned in the exhaust channel (6), the intake valve (4) seals the intake valve port (9) and is positioned in the main channel (5), exhalation valve member (3) are the same with the structure of inhaling valve member (4) and all include coaxial fixed valve disc (12) and central rod (13), central rod (13) insert in stand pipe (11) and constitute the cooperation of sliding, be equipped with accelerating spring (14) that are located central rod (13) top in stand pipe (11), the upper end of accelerating spring (14) is fixed mutually with the position of stand pipe (11) and the lower extreme leaves the clearance with central rod (13).

2. A respiratory valve as claimed in claim 1, wherein: the two ends of the guide pipe (11) are through, the top of the guide pipe is in threaded connection with a screw (15), and the upper end of the accelerating spring (14) is fixed to the bottom of the screw (15).

3. A respiratory valve as claimed in claim 1, wherein: the exhaust valve port (8) and the suction valve port (9) are respectively provided with a sealing assembly, the sealing assembly comprises a rubber top ring (16) and a ring cover (17), the rubber top ring (16) comprises a fastening part (18) of an outer ring and a top convex part (19) of the ring, the two rubber top rings (16) are respectively positioned above the exhaust valve port (8) and the suction valve port (9), the two ring covers (17) are in threaded fit above the exhaust valve port (8) and the suction valve port (9) and respectively press the fastening parts (18) of the two rubber top rings (16), the top convex parts (19) of the two rubber top rings (16) respectively penetrate out upwards from the inner sides of the two ring covers (17), and the top convex parts (19) are used for abutting against and closing the valve disc (12).

4. A respiratory valve as claimed in claim 1, wherein: the valve also comprises a base (20), the base (20) is in threaded fit with the lower end of the valve body (1), the base (20) is provided with a through cavity (21), and the main channel (5) is fixedly provided with a pressure lever (22) penetrating into the through cavity (21), a self-locking plug part (23) is arranged in the through cavity (21), the self-locking plug part (23) comprises a self-locking spring (24) and an I-shaped sliding plug (25), the middle section of the sliding plug (25) is in sliding fit with a sleeve (26) fixedly arranged in the through cavity (21), the self-locking spring (24) is sleeved on the middle section of the sliding plug (25), and the lower end of the self-locking spring (24) is in abutting fit with the upper end of the sleeve (26), the pressure lever (22) penetrates through a plugging opening (27) arranged on the through cavity (21) and pushes against the upper end of the sliding plug (25), the sliding plug (25) can be abutted against the closed plugging opening (27) by separating the base (20) and the valve body (1).

5. A breathing valve according to claim 4, characterised in that: the top of the sliding plug (25) is provided with a groove (28), the bottom surface of the pressure lever (22) is a spherical surface (29), and the pressure lever (22) is inserted into the groove (28) to abut against the sliding plug (25).