Vacuum breaker valve

Abstract

The utility model relates to the field of vacuum breaking, in particular to a vacuum breaking valve which comprises a valve body, a valve sleeve, a valve core and a valve cover. During use, the valve body is mounted on a pipeline, when negative pressure is generated in the pipeline, the pressure difference enables the valve rod to slide in the mounting groove, in the process, the valve plate compresses the spring, meanwhile, the valve plate is away from the valve hole, the valve hole is opened, then external air sequentially penetrates through the through hole, the valve hole and the air hole to enter the pipeline, and the vacuum effect is damaged. Along with air entering, the pressure in the pipeline rises, after the pressure is balanced, the valve element automatically resets under the action of elastic restoring force of the spring till the valve plate is tightly attached to the bottom of the mounting groove to block and seal the valve hole, at the moment, outside air does not enter the pipeline any more, and meanwhile it is guaranteed that water leakage is avoided. The spring is adopted to drive the valve plate to move and close, safe and effective work of the vacuum breaking valve is guaranteed, installation conditions are improved, the vacuum breaking valve does not need to be limited to a vertical installation state, and actual installation and use are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum destruction, especially a vacuum destruction valve. BACKGROUND

[0002] The vacuum destruction valve can be widely applied to various pipeline systems that are easy to produce vacuum, such as fire fighting, swimming pool, green land sprinkling irrigation, water supply and drainage, dock, power plant, metallurgy, shipbuilding and the like, and can timely suck in air to protect the pipeline system when negative pressure is formed in the pipeline, and can automatically open to destroy the vacuum effect and prevent the pipeline and other equipment from being deflated, concave and cracked and the like when the negative pressure or vacuum gradually increases due to the operation or stop of the pipeline system, so as to protect the safety of the equipment. SUMMARY

[0003] In view of the above background technology, the utility model provides a vacuum destruction valve.

[0004] The utility model discloses the following technical scheme:

[0005] A vacuum destruction valve, characterized in that the vacuum destruction valve comprises:

[0006] A valve body, an upper end face of the valve body is provided with a valve cavity, and a through hole penetrates the bottom of the valve cavity;

[0007] A valve sleeve, an upper end face of the valve sleeve is provided with a mounting groove, a valve hole penetrates the bottom of the mounting groove, the valve sleeve is placed in the valve cavity, and the valve hole corresponds to the through hole;

[0008] A valve core, the valve core comprises a valve plate and a valve rod arranged at an upper end face of the valve plate, the valve plate is placed in the mounting groove, and the valve plate is lifted in the mounting groove, the diameter of the valve plate is greater than the diameter of the valve hole, and the valve plate is used for plugging the valve hole;

[0009] A spring, the spring is sleeved on the outer side of the valve rod;

[0010] A valve cover, an upper end face of the valve cover is provided with a mounting hole and a plurality of air permeation holes, the air permeation holes are arranged away from the mounting hole, when the valve cover is installed at the opening of the mounting groove, the valve rod is inserted into the mounting hole, and the valve cover extrudes the spring.

[0011] As a further improvement, a plurality of guide ribs are arranged on the wall of the mounting groove, the guide ribs are vertically arranged, and the circumferential side surface of the valve plate is lifted along the surface of the guide ribs.

[0012] As a further improvement, the through hole is provided with a push rod, the push rod is threadedly connected with the through hole, and an air inlet hole is formed through an upper end face of the push rod, the push rod pushes the valve plate after descending through the valve hole.

[0013] As can be seen from the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages: when in use, the valve body is mounted on the pipeline, the upper end of the valve body is placed in the pipeline, when negative pressure is generated in the pipeline, the atmospheric pressure acts on the valve core due to the pressure difference between the inside of the pipeline and the atmospheric pressure, the valve rod slides in the mounting groove, in the process, the valve plate further compresses the spring, at the same time, the valve plate is away from the valve hole, the valve hole is opened, and then external air enters the pipeline in sequence through the through hole, the valve hole and the air permeable hole, the vacuum effect is destroyed, the pipeline and other equipment are prevented from being deformed, concave, cracked and the like. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0015] Figure 2 It is a three-dimensional structure schematic view of the valve body.

[0016] Figure 3 It is a three-dimensional structure schematic view of the valve sleeve, the valve core, the spring and the valve cover.

[0017] Figure 4 It is an exploded structure schematic view of the valve sleeve and the valve core.

[0018] Figure 5 It is an exploded structure schematic view of the valve sleeve, the valve core and the spring.

[0019] Figure 6 It is an exploded structure schematic view of the valve sleeve, the valve core, the spring and the valve cover.

[0020] Figure 7 It is a cross-sectional schematic view when the utility model is closed.

[0021] Figure 8 It is a cross-sectional schematic view when the utility model is opened.

[0022] Figure 9 It is an exploded structure schematic view of the push rod and the valve body.

[0023] Figure 10A schematic view of the sectional structure of the push rod and the valve body. DETAILED DESCRIPTION

[0024] The specific embodiment of the present application is described below with reference to the accompanying drawings.

[0025] As shown in the accompanying Figure 1 , a vacuum breaking valve comprises a valve body 1, a valve sleeve 2, a valve core 3, a spring 4 and a valve cover 5.

[0026] As shown in the accompanying Figures 2 to 8 , the upper end face of the valve body 1 is provided with a valve cavity 11, the valve sleeve 2 is built-in the valve cavity 11, the upper end face of the valve sleeve 2 is provided with a mounting groove 21, the mounting groove 21 is provided with a valve hole 22 penetrating the groove bottom, and the valve hole 22 corresponds to the through hole 12 penetrating the cavity bottom of the valve cavity 11. The valve core 3 is arranged in the mounting groove 21, the valve core 3 comprises a valve plate 31 and a valve rod 32 arranged on the upper end face of the valve plate 31, the valve plate 31 is arranged to lift in the mounting groove 21, and the diameter of the valve plate 31 is larger than the diameter of the valve hole 22, and the valve rod 32 is sleeved with the spring 4 on the outside. In addition, the mounting groove 21 is provided with the valve cover 5 at the slot opening, the upper end face of the valve cover 5 is provided with a mounting hole 51 and a plurality of air permeable holes 52, and the air permeable holes 52 are arranged away from the mounting hole 51. When the valve cover 5 is installed at the slot opening of the mounting groove 21, the valve rod 32 is inserted into the mounting hole 51, and the valve cover 5 extrudes the spring 4, so that the valve plate 31 blocks the valve hole 22. In use, the valve body 1 is installed on the pipeline, and the upper end of the valve body 1 is arranged in the pipeline, when negative pressure is generated in the pipeline, due to the pressure difference between the inside of the pipeline and the atmospheric pressure, the atmospheric pressure acts on the valve core 3, so that the valve rod 32 slides in the mounting groove 21, in the process, the valve plate 31 further compresses the spring 4, at the same time, the valve plate 31 moves away from the valve hole 22, and the valve hole 22 is opened, and then the external air enters the pipeline in sequence through the through hole 12, the valve hole 22 and the air permeable hole 52, the vacuum effect is broken, so that the pipeline and other equipment are not prone to phenomena such as collapse, concave crack and the like. With the entry of air, the pressure in the pipeline rises, and after pressure balance, the valve core 3 is automatically reset under the elastic restoring force of the spring 4, until the valve plate 31 tightly adheres to the groove bottom of the mounting groove 21, and blocks and seals the valve hole 22, at this time, the external air no longer enters the pipeline, and at the same time, water leakage is ensured. The valve sleeve 2 and the valve body 1 are sealed by the sealing ring 6, so as to avoid the risk of water leakage.

[0027] In addition, as shown in the accompanying Figure 4 and Figure 5As shown, the installation groove 21 is provided with a plurality of guide ribs 23 on the groove wall, the guide ribs 23 are vertically arranged, and the valve plate 31 is lifted along the surface of the guide ribs 23 on the circumferential side, on the one hand, the guide ribs 23 play a guiding role on the valve plate 31, avoiding the valve plate 31 from being skewed during lifting, affecting the sealing of the valve hole 22, on the other hand, the valve plate 31 and the groove wall of the installation groove 21 have a gap, ensuring smooth air intake.

[0028] It is worth mentioning that, as shown in the accompanying drawings Figure 9 and Figure 10 As shown, the through hole 12 is provided with a push rod 6, the push rod 6 is threadedly connected with the through hole 12, and the upper end surface of the push rod 6 penetrates the air inlet hole 61. When the valve body 1 is installed on the pipeline, the push rod 6 is exposed, so that the person can rotate the push rod 6, so that the push rod 6 can be lowered to push the valve plate 31 through the valve hole 22, and the vacuum breaking valve is manually opened.

[0029] In summary, in use, the valve body 1 is installed on the pipeline, the upper end of the valve body 1 is placed in the pipeline, when negative pressure is generated in the pipeline, due to the pressure difference between the inside of the pipeline and the atmospheric pressure, the atmospheric pressure acts on the valve core 3, the valve rod 32 is located in the installation groove 21 and slides, in the process, the valve plate 31 further compresses the spring 4, at the same time, the valve plate 31 is away from the valve hole 22, the valve hole 22 is opened, and then the external air enters the pipeline in sequence through the through hole 12, the valve hole 22 and the air permeable hole 52, the vacuum effect is broken, so that the pipeline and other equipment are not prone to phenomena such as collapse, concave crack and the like. With the entry of air, the pressure in the pipeline rises, and after pressure balance, the valve core 3 is automatically reset under the elastic restoring force of the spring 4, until the valve plate 31 is tightly attached to the groove bottom of the installation groove 21, blocking and sealing the valve hole 22, at this time, the external air no longer enters the pipeline, and at the same time, water leakage is ensured. The spring 4 is used to drive the valve plate 31 to move and close, ensuring safe and effective work of the vacuum breaking valve, and improving the installation condition, so that the vacuum breaking valve is not limited to the vertical installation state, and the actual installation and use are facilitated.

[0030] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed to infringe the protection scope of the present application.

Claims

1. A vacuum break valve characterized by, The vacuum breaking valve comprises: a valve body, an upper end face of which is provided with a valve cavity, a through hole being formed in a bottom of the valve cavity; a valve sleeve, an upper end face of which is provided with a mounting groove, a valve hole being formed in a bottom of the mounting groove, the valve sleeve being placed in the valve cavity, and the valve hole corresponding to the through hole; a valve core, comprising a valve plate and a valve rod provided at an upper end face of the valve plate, the valve plate being placed in the mounting groove, and the valve plate being lifted in the mounting groove, a diameter of the valve plate being larger than that of the valve hole, and the valve plate being used to block the valve hole; a spring, being sleeved on an outer side of the valve rod; a valve cover, an upper end face of which is provided with a mounting hole and a plurality of air permeation holes, the air permeation holes being arranged away from the mounting hole, the valve rod being inserted into the mounting hole when the valve cover is mounted at a slot of the mounting groove, and the valve cover pressing the spring.

2. A vacuum break valve as claimed in claim 1, characterized in that: a plurality of guide ribs are provided on a wall of the mounting groove, the guide ribs being vertically arranged, and a circumferential side of the valve plate being lifted against a surface of the guide ribs.

3. A vacuum break valve as defined in claim 1, wherein: a push rod is provided in the through hole, the push rod being threadedly connected with the through hole, and an upper end face of the push rod being provided with an air inlet hole, the push rod pushing the valve plate after descending through the valve hole.

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