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A two-way exhaust opening and closing valve

A technology of opening and closing valves and exhaust ports, which is applied to valve details, valve devices, multi-way valves, etc., can solve problems such as pipe bursts, inability to effectively eliminate gas hazards to pipelines, and inability to meet pipeline exhaust requirements, etc.

Active Publication Date: 2019-07-09
TIANJIN GUOWEI FEEDING & DRAINAGE EQUIP MENT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the opening and closing valve, the medium in the pipeline will inevitably contain gas and accumulate in the pipeline to form air bubbles. When the gas in the pipeline accumulates to form air pockets, it is easy to block the pipeline and affect the water supply efficiency
At the same time, when there is negative pressure in the pipeline, it is easy to form a vacuum in the pipeline and cause the pipe to explode. This requires an opening and closing valve with exhaust function to prevent the gas in the pipeline from causing harm to the pipeline.
However, there is only one exhaust device for the existing opening and closing valve, which cannot meet the exhaust requirements of the pipeline in different situations. Because the opening and closing valve needs to achieve a large amount of exhaust and continuous exhaust in order to meet the exhaust requirements of the pipeline, if only Exhaust device with a large amount of exhaust, when the pipeline is full of medium, the gas cannot be discharged through the large exhaust device, the gas in the pipeline will exist in the pipeline or flow downstream with the medium; if only a continuous exhaust device is installed, a large amount of gas in the pipeline will It cannot be discharged quickly, the gas will still exist in the pipeline or accumulate, and the harm of gas to the pipeline cannot be effectively eliminated

Method used

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  • A two-way exhaust opening and closing valve
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  • A two-way exhaust opening and closing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, a two-way exhaust opening and closing valve includes a valve body 2 with an inner cavity 1, and a first exhaust device 3 and a second exhaust device 4 communicating with the inner cavity 1 are provided on the valve body 2. One exhaust device 3 is used to realize a large amount of exhaust to the pipeline, and the second exhaust device 4 is used to realize continuous and slight exhaust to the pipeline. When the pipeline is filled with medium for the first time or when a large amount of air enters the pipeline due to maintenance, the gas can be discharged through the first exhaust device 3 to ensure the medium flows through the pipeline smoothly; when the pipeline is filled with medium, the gas precipitated from the medium can only be discharged from the second exhaust The gas device 4 is discharged to prevent the gas from flowing downstream with the medium, so as to prevent the gas accumulation from causing harm to the pipeline. Among them, the co...

Embodiment 2

[0040] This embodiment is basically similar to the structure of the two-way exhaust opening and closing valve in Embodiment 1, the difference is that: the emergency cover 7 and the emergency valve plate 8 are fixedly connected, and the emergency valve plate 8 is provided with a connecting column 10, which is connected Column 10 is interference fit or welded with the through hole 11 on the emergency cover 7, when normal exhaust, as Figure 5 As shown, the emergency valve plate 8 has a certain distance from the exhaust port 5, so that the gas in the pipeline can be discharged. When the leakage is emergency, by rotating the emergency cover 7, the emergency cover 7 drives the emergency valve plate 8 to approach and close the exhaust port 5 ,like Figure 6 As shown, the medium in the pipeline cannot flow out, realizing emergency leakage prevention. The fixedly connected emergency cover 7 and the emergency valve plate 8 can realize air replenishment when there is a negative pressur...

Embodiment 3

[0042] The structure of this embodiment is basically similar to that of Embodiment 1 or Embodiment 2, except that the structure of the leakage emergency device 6 is different. The leakage emergency device 6 in this embodiment includes a connecting sleeve 12 and an emergency sealing rod inside the connecting sleeve 12 13 and emergency bolt 14, the connecting sleeve 12 is fixed on the first exhaust device 3 and the second exhaust device 4, the hole on the connecting sleeve 12 is the exhaust port 5, and the emergency sealing rod 13 is arranged on the emergency bolt 14, with In order to realize the opening and closing of the exhaust port 5, the emergency bolt 14 is provided with an exhaust channel 9 and is threadedly connected with the inner wall of the connecting sleeve 12, such as Figure 10 As shown, when exhausting normally, the gas in the pipeline can be discharged from the exhaust port 5 through the exhaust passage 9, and when the leakage is emergency, by rotating the emergen...

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Abstract

The invention discloses a two-way exhaust opening and closing valve, and relates to the technical field of valves. The two-way exhaust opening and closing valve comprises a valve body provided with an inner cavity. A first exhaust device and a second exhaust device which are communicated with the inner cavity are arranged on the valve body. The first exhaust device is used for conducting large-amount exhausting on a pipeline. The second exhaust device is used for conducting continuous and small-amount exhausting on the pipeline. The two-way exhaust opening and closing valve can conduct large-amount exhausting and continuous and small-amount exhausting on the pipeline under different conditions, gathering of gas in the pipeline is reduced, and damage of gas to the pipeline is reduced.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a two-way exhaust opening and closing valve. Background technique [0002] The general opening and closing valve only has the on-off function of the medium. During the use of the opening and closing valve, the medium in the pipeline will inevitably contain gas and accumulate in the pipeline to form air bubbles. When the gas in the pipeline accumulates to form air pockets, it is easy to block the pipeline and affect the water supply efficiency. At the same time, when there is negative pressure in the pipeline, it is easy to form a vacuum in the pipeline and cause the pipe to burst. This requires an opening and closing valve with an exhaust function to prevent the gas in the pipeline from causing harm to the pipeline. However, there is only one exhaust device for the existing opening and closing valve, which cannot meet the exhaust requirements of the pipeline in different situatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/06F16K27/04
CPCF16K11/06F16K27/04
Inventor 刘永龚高石刘庆
Owner TIANJIN GUOWEI FEEDING & DRAINAGE EQUIP MENT MFG
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