Vacuum breaker valve special for pipeline

Abstract

The utility model relates to the field of vacuum breakers, in particular to a vacuum breaking valve special for a pipeline, which comprises a valve body. After the valve body is installed on a pipeline, when negative pressure is generated in the pipeline, the pressure difference enables the valve rod to slide in the valve hole, the limiting part compresses the spring in the process, meanwhile, the valve plate and the sealing gasket are far away from the valve hole, the vacuum breaking valve is opened, and then external air enters the pipeline through the air hole to break the vacuum effect. When air enters the pipeline, the valve element resets under the elastic action of the spring, the vacuum breaking valve is closed, outside air does not enter the pipeline at the moment, and meanwhile it is guaranteed that water leakage is avoided. The spring is adopted to drive the valve plate and the sealing gasket 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 in a vertical installation state, and actual installation and use are facilitated. And meanwhile, the anti-blocking device can be connected to a pipeline by adopting external threads or internal threads according to the use condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum breaker, especially a vacuum breaker valve specially used in pipeline. BACKGROUND

[0002] The vacuum breaker 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 break 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-mentioned background technology, the utility model provides a vacuum breaker valve specially used in pipeline.

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

[0005] A vacuum breaker valve specially used in pipeline, characterized in that the vacuum breaker valve comprises:

[0006] A valve body;

[0007] A valve core, the valve core comprises a valve plate, a valve rod and a limiting part, the valve rod is connected with the valve plate and the limiting part at both ends respectively, the width of the valve plate and the limiting part is greater than the diameter of the valve hole on the valve body, and a gas permeation hole is penetrated through the circumferential side surface of the valve rod;

[0008] A sealing gasket, the sealing gasket is of elastic material, and the sealing gasket is sleeved on the outer side of the valve rod;

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

[0010] Among the assembled valve core and valve body, the valve rod passes through the valve hole, the sealing gasket is located between the valve plate and the valve body, the spring is located between the limiting part and the valve body, the spring is in compression state, the valve plate compresses the sealing gasket on the surface of the valve body, and the sealing gasket is used for sealing the valve hole.

[0011] As a further improvement, the valve rod is adapted to the valve hole.

[0012] As a further improvement, the valve rod and the limiting part are detachably connected.

[0013] As a further improvement, the limiting part is provided with a threaded hole, and the valve rod is screwed with the threaded hole of the limiting part after passing through the valve hole.

[0014] As a further improvement, the limiting part is a regular hexagon in cross section.

[0015] As described above, compared with the prior art, the utility model has the following advantages: when in use, the valve body is installed on 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 pipeline interior and the atmospheric pressure, the valve rod slides in the valve hole, the limiting part further compresses the spring in the process, the valve plate and the sealing gasket are away from the valve hole, the air hole passes through the valve hole, and then the external air enters the pipeline through the air hole, the vacuum effect is destroyed, and the pipeline and other equipment are prevented from being deflated, concave, cracked and the like. With the air entering, the pressure in the pipeline is increased, and after the pressure is balanced, the valve core is automatically reset under the elastic restoring force of the spring, until the valve plate tightly adheres the sealing gasket to the surface of the valve body, the valve hole is sealed, at this time, the external air no longer enters the pipeline, and water leakage is prevented. The utility model adopts the spring to drive the valve plate and the sealing gasket to move and close, ensures the safe and effective work of the vacuum destruction valve, improves the installation condition, and makes the vacuum destruction valve not limited to the vertical installation state, facilitates the actual installation and use. Meanwhile, the installation direction of the valve core can be adjusted according to the use condition, the valve body can be connected to the pipeline through external threads or internal threads. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the valve body.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the valve core, the sealing gasket and the spring.

[0018] Figure 3 It is a schematic diagram of the exploded structure of the valve core, the sealing gasket and the spring.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the vacuum destruction valve when connected with the external threads of the pipeline.

[0020] Figure 5 It is a schematic diagram of the cross section of the vacuum destruction valve when closed when connected with the external threads of the pipeline.

[0021] Figure 6 It is a schematic diagram of the cross section of the vacuum destruction valve when opened when connected with the external threads of the pipeline.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the vacuum destruction valve when connected with the internal threads of the pipeline.

[0023] Figure 8A cross-sectional view of the vacuum breaking valve when closed for threaded connection inside a pipe.

[0024] Figure 9 A cross-sectional view of the vacuum breaking valve when opened for threaded connection inside a pipe. DETAILED DESCRIPTION

[0025] The specific embodiment of the present application is described below with reference to the accompanying drawings.

[0026] As shown in the accompanying Figure 1 and Figure 2 A vacuum breaking valve specially used in a pipe comprises a valve body 1, a valve core 2, a sealing gasket 3 and a spring 4.

[0027] As shown in the accompanying Figures 1 to 4 The valve core 2 comprises a valve plate 21, a valve rod 22 and a limiting part 24, the valve rod 22 is connected with the valve plate 21 and the limiting part 24 at both ends respectively, the width of the valve plate 21 and the limiting part 24 is greater than the diameter of the valve hole 11 on the valve body 1, the valve rod 22 is provided with a gas permeable hole 23 on the circumferential side, and the valve rod 22 is provided with the sealing gasket 3 and the spring 4 outside. In the assembled valve core 2 and valve body 1, the valve rod 22 passes through the valve hole 11, the sealing gasket 3 is located between the valve plate 21 and the valve body 1, the spring 4 is located between the limiting part 24 and the valve body 1, and the spring 4 is in a compressed state, the elastic recovery force of the spring 4 can make the valve plate 21 press the sealing gasket 3 tightly on the surface of the valve body 1, at this time, the sealing gasket 3 is used to seal the valve hole 11 to ensure no water leakage. The sealing gasket 3 is made of elastic material, specifically, the sealing gasket 3 can be made of rubber or silicone material, which has good elasticity and sealing performance. The limiting part 24 is used to block the spring 4 and ensure that the valve rod 22 does not fall off from the valve hole 11.

[0028] In use, the valve body 1 is mounted on the pipe, specifically as shown in the accompanying Figures 4 to 9As shown, the valve rod 22 and the limiting portion 24 are detachably connected. Specifically, the limiting portion 24 is provided with a threaded hole, and the valve rod 22 is threadedly connected with the threaded hole of the limiting portion 24 after passing through the valve hole 11. During assembly, the sealing gasket 3 is first sleeved on the outer side of the valve rod 22, so that the sealing gasket 3 covers the valve plate 21, then the valve rod 22 passes through the valve hole 11 of the valve body 1, and then the spring 4 is sleeved on the outer side of the valve rod 22, and finally the limiting portion 24 is screwed on the valve rod 22, thereby completing the assembly. At this time, the limiting portion 24 extrudes the spring 4 on the valve body 1, and due to the elasticity of the spring 4, the valve plate 21 presses the sealing gasket 3 against the surface of the valve body 1, thereby sealing the valve hole 11. The limiting portion 24 has a hexagonal cross section, which facilitates the rotation of the limiting portion 24 by a hexagonal wrench or the like, thereby quickly completing the connection between the limiting portion 24 and the valve rod 22.

[0029] It is worth mentioning that, as shown in the accompanying drawings, Figures 1 to 4 As shown, the valve rod 22 and the limiting portion 24 are detachably connected. Specifically, the limiting portion 24 is provided with a threaded hole, and the valve rod 22 is threadedly connected with the threaded hole of the limiting portion 24 after passing through the valve hole 11. During assembly, the sealing gasket 3 is first sleeved on the outer side of the valve rod 22, so that the sealing gasket 3 covers the valve plate 21, then the valve rod 22 passes through the valve hole 11 of the valve body 1, and then the spring 4 is sleeved on the outer side of the valve rod 22, and finally the limiting portion 24 is screwed on the valve rod 22, thereby completing the assembly. At this time, the limiting portion 24 extrudes the spring 4 on the valve body 1, and due to the elasticity of the spring 4, the valve plate 21 presses the sealing gasket 3 against the surface of the valve body 1, thereby sealing the valve hole 11. The limiting portion 24 has a hexagonal cross section, which facilitates the rotation of the limiting portion 24 by a hexagonal wrench or the like, thereby quickly completing the connection between the limiting portion 24 and the valve rod 22.

[0030] In summary, the utility model discloses when using, will valve body 1 install to pipeline, when pipeline produces negative pressure, because the pressure difference between pipeline interior and atmospheric pressure makes atmospheric pressure act on valve core 2, makes valve stem 22 be located in the sliding of valve hole 11, the process limit portion 24 further compression spring 4, simultaneously, valve plate 21 and sealing washer 3 are away from valve hole 11, make air hole 23 pass through valve hole 11, and then external air passes through air hole 23 and enters pipeline, destroys vacuum effect, makes pipeline and other equipment not to produce the phenomenon such as collapse, concave crack etc.. With air entering, pipeline pressure rises, until pressure balance after the elastic recovery force of spring 4 under the action of valve core 2 automatic reset, until valve plate 21 will sealing washer 3 adhere to valve body 1 surface, seal valve hole 11, at this time, external air does not enter pipeline, guaranteeing not leaking simultaneously. The utility model discloses spring 4 drive valve plate 21 and sealing washer 3 move, close, guarantee the safe and effective work of vacuum breaker, and improve the installation condition, make vacuum breaker not be limited to vertical installation state, facilitate actual installation use. Meanwhile can adjust the installation direction of valve core 2 according to the use condition, make valve body 1 can adopt outer thread or internal thread and connect to pipeline.

[0031] The above is merely a specific embodiment of the utility model, but the design concept of the utility model is not limited to this, and any non-essential change to the utility model using this concept should be considered as an infringement of the protection scope of the utility model.

Claims

1. A vacuum break valve dedicated for use in a pipe, characterized in that, The vacuum breaking valve comprises: a valve body; a valve core comprising a valve plate, a valve rod and a limiting part, the valve rod is connected with the valve plate and the limiting part at both ends respectively, the width of the valve plate and the limiting part is greater than the diameter of the valve hole on the valve body, and a gas permeable hole is formed through the circumferential side of the valve rod; a sealing gasket, which is made of elastic material, is sleeved on the outer side of the valve rod; a spring is sleeved on the outer side of the valve rod; wherein, in the assembled valve core and valve body, the valve rod passes through the valve hole, the sealing gasket is located between the valve plate and the valve body, the spring is located between the limiting part and the valve body, the spring is in a compressed state, the valve plate presses the sealing gasket against the surface of the valve body, and the sealing gasket is used for sealing the valve hole.

2. A vacuum break valve dedicated for use in a pipe as defined in claim 1, characterized in that: The valve rod is matched with the valve hole.

3. A vacuum break valve dedicated for use in a pipe as defined in claim 1, characterized in that: The valve rod and the limiting part are detachably connected.

4. A vacuum break valve dedicated for use in a pipe as defined in claim 3, characterized in that: A threaded hole is arranged on the limiting part, and the valve rod is threadedly connected with the threaded hole of the limiting part after passing through the valve hole.

5. A vacuum break valve dedicated for use in a pipe as defined in claim 4, characterized in that: The limiting part has a cross section in the shape of a regular hexagon.

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