CN212899961U - Gas injection vacuum breaking valve - Google Patents

Abstract

The utility model discloses a gas injection vacuum destruction valve, which comprises a valve body, the fixed inlet port of having seted up of valve body lower extreme, the inside fixedly connected with fixed plate of inlet port, fixed plate middle part fixedly connected with second fixing base, the fixed through-hole of having seted up in fixing base middle part, second fixing base upper end fixedly connected with spring, spring upper end fixedly connected with valve clack, the fixed circular through-hole of having seted up in valve body upper end, two dead levers of the inside fixedly connected with in valve body upper end, the first fixing base of one end fixedly connected with of valve body is kept away from to two dead levers, first fixing base middle part fixedly connected with guide bar, the guide bar lower extreme passes inside the through-hole. The utility model discloses a gas injection vacuum destruction valve guarantees the inside good leakproofness of valve body, makes sealed effect better, makes valve clack and valve body upper end contact position accurate, and the device stable performance, safe and reliable is worth promoting.

Description

Gas injection vacuum breaking valve

Technical Field

The utility model relates to the technical field of valving, especially, relate to a gas injection vacuum damage valve.

Background

The vacuum breaker valve is widely applied to various systems which are easy to generate vacuum, such as fire fighting, swimming pools, green land sprinkling irrigation, water supply and drainage, docks, power plants, metallurgy, shipbuilding and the like, the air is timely sucked to protect the system when the system forms negative pressure, and when the pipeline or the container generates negative pressure or the vacuum is gradually increased due to the operation or the stop of the system, the vacuum breaker valve can be automatically opened to break the vacuum effect, so that the pipeline and other equipment cannot be shriveled or dented, and the like, thereby protecting the safety of the equipment.

The common vacuum breaker valve is characterized in that a vacuum floating ball is arranged in a valve body, the floating ball is a glass floating ball, the top end of the floating ball is provided with a convex point, a valve cover is provided with an air outlet, the air outlet is opened and closed by the convex point at the top end of the floating ball, air in a pipeline system can be discharged by the exhaust valve with the structure, however, the convex point and the air outlet are often dislocated and insensitive to exhaust, water overflow is caused, the use effect is unsatisfactory, the vacuum of the pipeline cannot be broken, the pipeline is inconvenient, the service life of the pipeline is greatly reduced, and therefore the vacuum breaker valve which is good in exhaust effect, simple in structure, convenient to maintain and capable of prolonging the.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a gas injection vacuum breaking valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a gas injection vacuum breaking valve comprises a valve body, wherein a gas inlet hole is fixedly formed in the lower end of the valve body, a fixed plate is fixedly connected inside the gas inlet hole, a second fixed seat is fixedly connected in the middle of the fixed plate, a through hole is fixedly formed in the middle of the fixed seat, a spring is fixedly connected to the upper end of the second fixed seat, a valve clack is fixedly connected to the upper end of the spring, a circular through hole is fixedly formed in the upper end of the valve body, two fixed rods are fixedly connected in the upper end of the valve body, a first fixed seat is fixedly connected to one end, away from the valve body, of the two fixed rods, a guide rod is fixedly connected in the middle of the first fixed seat, the lower end of the guide rod penetrates through the through hole, the valve clack is slidably sleeved on the outer wall, and a filtering ventilation net is fixedly arranged between the upper end of the valve cover and the rain cover.

As a further description of the above technical solution:

a plurality of second ventholes are fixedly formed in the side portion of the fixing plate, and anti-blocking filter screens are fixedly arranged in the second ventholes.

As a further description of the above technical solution:

the valve body is fixedly connected with the valve cover through a second fastening bolt, and a fixing nut is connected to the lower end of the second fastening bolt in a threaded mode.

As a further description of the above technical solution:

a plurality of first vent holes are fixedly formed in the side wall of the valve frame.

As a further description of the above technical solution:

rain-proof lid upper end is fixed and is provided with a plurality of first fastening bolt.

As a further description of the above technical solution:

the valve body is fixedly provided with a valve body sealing ring at the contact part with the valve clack, and the valve clack sealing ring is fixedly arranged at the upper end of the valve clack.

As a further description of the above technical solution:

the valve body (3) bottom is fixed and is provided with annular sealing gasket (18), a plurality of mounting holes (25) have all been fixed to annular sealing gasket (18) and valve body (3) bottom side.

The utility model discloses following beneficial effect has:

the utility model provides a pair of gas injection vacuum break valve adopts the mode that valve clack and valve body upper end export combine closely, guarantees the inside good leakproofness of valve body, and valve clack and valve body contact surface all are equipped with the sealing washer, and a contact surface installation sealing washer, sealed effect is better, and the contact surface impact force that receives in frequent collision is also less, prolongs the life of sealing washer.

The setting of dead lever, fixing base and guide bar can play and carry out spacing effect to the valve clack, avoids the valve clack skew, makes the valve clack motion route accurate, and is accurate with valve body upper end contact position, can also fix the spring of valve body below, convenient and practical.

The anti-blocking filter screen can filter impurities in liquid, prevents the impurities from entering the valve body and causing damage to the valve body, prolongs the service life of the exhaust valve, and can filter the impurities in the outside air through the filter ventilation screen, prevent the impurities from entering the valve body and exhaust the air.

Drawings

FIG. 1 is a front cross-sectional view of a gas injection vacuum break valve according to the present invention;

FIG. 2 is a schematic view of a fixing plate of the gas injection vacuum breaker of the present invention;

FIG. 3 is an enlarged view of FIG. 1-A in accordance with the present invention;

fig. 4 is a structural diagram of the annular sealing gasket of the gas injection vacuum breaker valve according to the present invention.

Illustration of the drawings:

1. an air inlet; 2. a fixing plate; 3. a valve body; 4. fixing a nut; 5. a valve cover; 6. a valve frame; 7. a first vent hole; 8. a rain cover; 9. a filtering ventilation net; 10. a first fastening bolt; 11. a first fixed seat; 12. fixing the rod; 13. a second fastening bolt; 14. a valve flap; 15. a guide bar; 16. a spring; 17. a second fixed seat; 18. an annular seal; 19. a through hole; 20. a blocking-proof filter screen; 21. a second vent hole; 22. a circular through hole; 23. a valve body sealing ring; 24. a valve clack sealing ring; 25. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a gas injection vacuum breaking valve comprises a valve body 3, wherein the lower end of the valve body 3 is fixedly provided with a gas inlet 1, the inside of the gas inlet 1 is fixedly connected with a fixed plate 2, the middle part of the fixed plate 2 is fixedly connected with a second fixed seat 17, the middle part of the fixed seat is fixedly provided with a through hole 19, the upper end of the second fixed seat 17 is fixedly connected with a spring 16, the upper end of the spring 16 is fixedly connected with a valve clack 14, the upper end of the valve body 3 is fixedly provided with a circular through hole 22, the inside of the upper end of the valve body 3 is fixedly connected with two fixed rods 12, one end of the two fixed rods 12 far away from the valve body 3 is fixedly connected with a first fixed seat 11, the middle part of the first fixed seat 11 is fixedly connected with a guide rod 15, the lower end of the guide rod 15 passes through the through hole 19, the, a filtering ventilation net 9 is fixedly arranged between the upper end of the valve cover 5 and the rain cover 8.

A plurality of second ventilation holes 21 have been seted up to 2 lateral parts of fixed plate, the filter screen 20 is prevented blockking up by the inside fixed being provided with of a plurality of second ventilation holes 21, valve body 3 passes through second fastening bolt 13 fixed connection with valve gap 5, second fastening bolt 13 lower extreme threaded connection has fixation nut 4, 6 lateral walls of valve frame are fixed and have been seted up a plurality of first ventilation holes 7, rain-proof 8 upper ends of lid are fixed and are provided with a plurality of first fastening bolt 10, valve body 3 is being provided with valve body sealing washer 23 with the fixed valve clack sealing washer that is provided with in 14 contact departments of valve clack, the fixed valve clack.

The working principle is as follows: when the device is used, the valve body 3 is arranged at the corresponding position of the pipeline through the mounting hole 25, when a pump is stopped or water is drained quickly, vacuum is generated in the pipeline, the atmospheric pressure outside the valve body 3 is higher than the internal pressure of the pipeline, external air enters through the first vent hole 7, is filtered by the filtering air passing net 9 and then enters the upper end of the valve body 3 through the circular through hole 22 to act on the valve clack 14, the valve clack 14 is pressurized to compress the spring 16 at the lower end, the spring 16 contracts, the valve clack 14 moves downwards, the air enters the valve body 3 and then enters the pipeline through the air inlet hole 1, the vacuum effect is damaged, the pipeline and other equipment are prevented from generating phenomena such as shriveling, concave cracking and the like, the safety of the equipment is protected, the fixing rod 12, the fixing seat and the guide rod 15 can limit the valve clack 14 to avoid the deviation of the valve clack 14, the contact position with the upper end of the valve, prevent that impurity from getting into 3 insides of valve body and causing the harm to valve body 3, reduce discharge valve's life, annular sealing gasket 18 makes valve body 3 installation gas tightness better, can also play the cushioning effect between valve body 3 and pipeline, the device stable performance, safe and reliable is worth promoting.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (7)

1. A gas injection vacuum break valve, includes valve body (3), its characterized in that: the lower end of the valve body (3) is fixedly provided with an air inlet hole (1), a fixed plate (2) is fixedly connected inside the air inlet hole (1), the middle part of the fixed plate (2) is fixedly connected with a second fixed seat (17), the middle part of the fixed seat is fixedly provided with a through hole (19), the upper end of the second fixed seat (17) is fixedly connected with a spring (16), the upper end of the spring (16) is fixedly connected with a valve flap (14), the upper end of the valve body (3) is fixedly provided with a circular through hole (22), the upper end of the valve body (3) is fixedly connected with two fixed rods (12), one end of each fixed rod (12) far away from the valve body (3) is fixedly connected with a first fixed seat (11), the middle part of the first fixed seat (11) is fixedly connected with a guide rod (15), the lower end of the guide rod (15) penetrates through, valve body (3) upper end fixedly connected with valve gap (5), valve gap (5) up end fixedly connected with valve frame (6), valve frame (6) upper end fixedly connected with rain-proof lid (8), fixed filtration ventilation net (9) that is provided with between valve gap (5) upper end and rain-proof lid (8).

2. A gas injection vacuum break valve according to claim 1, wherein: a plurality of second ventilation holes (21) are fixedly formed in the side portion of the fixing plate (2), and anti-blocking filter screens (20) are fixedly arranged in the second ventilation holes (21).

3. A gas injection vacuum break valve according to claim 1, wherein: the valve body (3) is fixedly connected with the valve cover (5) through a second fastening bolt (13), and a fixing nut (4) is connected to the lower end of the second fastening bolt (13) in a threaded mode.

4. A gas injection vacuum break valve according to claim 1, wherein: a plurality of first vent holes (7) are fixedly formed in the side wall of the valve frame (6).

5. A gas injection vacuum break valve according to claim 1, wherein: a plurality of first fastening bolts (10) are fixedly arranged at the upper end of the rain cover (8).

6. A gas injection vacuum break valve according to claim 1, wherein: the valve body (3) is fixedly provided with a valve body sealing ring (23) at the contact part with the valve clack (14), and the upper end of the valve clack (14) is fixedly provided with a valve clack sealing ring (24).

7. A gas injection vacuum break valve according to claim 1, wherein: the valve body (3) bottom is fixed and is provided with annular sealing gasket (18), a plurality of mounting holes (25) have all been fixed to annular sealing gasket (18) and valve body (3) bottom side.

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