A post-adjustable sub-orifice composite anti-hammer air valve group

An air valve and composite technology, applied in multi-way valves, balance valves, valve devices, etc., can solve problems such as large-diameter high-speed exhaust holes, corrosion of pipe walls, and single exhaust holes

Active Publication Date: 2019-01-18
ANHUI REDSTAR VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing ordinary air valve uses the same physical orifice as the high-speed exhaust port and the high-speed suction port, which cannot be selected independently; the traditional high-speed exhaust port is usually too large in diameter and cannot be adjusted and controlled, while the The caliber is relatively small, the air intake is obviously insufficient, and the risk of negative pressure is high; the trace exhaust orifice is single and small, and only one size is 1.6mm, (see the exhaust valve industry recommended standard CJ / T 217-2013), Unable to meet the needs of large pipe micro exhaust
[0003] When the empty pipe of the pipeline or container system is filled with water or liquid, the high-speed exhaust orifice will exhaust at high speed, and a certain gas pressure difference will be generated at the orifice. When the pressure difference reaches 2kPa ~ 30kPa, ordinary high-speed exhaust valve or composite The floating ball of the high-speed exhaust valve will be blown up by the high-speed airflow, blocking the large orifice of the high-speed exhaust, so that the high-speed exhaust valve will stop the high-speed exhaust in advance. The consequence is that most of the gas in the pipeline or container will not be discharged. The pipeline or container is not exhausted completely, cannot be completely filled with water or liquid, half liquid and half gas, which seriously affects the infusion efficiency of the pipeline or the liquid filling volume of the container, resulting in unstable pressure, alternating contact with liquid vapor, resulting in corrosion of the pipe wall and inaccurate measurement. Accuracy and other issues
[0004] The existing high-speed intake and exhaust valve products only have a single orifice, and the exhaust and intake bidirectional calibers are not only the same caliber, but also the same physical orifice, which cannot meet the two-way different intake and exhaust calibers and flow capacity requirements

Method used

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  • A post-adjustable sub-orifice composite anti-hammer air valve group
  • A post-adjustable sub-orifice composite anti-hammer air valve group
  • A post-adjustable sub-orifice composite anti-hammer air valve group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment one: if Figure 2a , 2b, 2c, when the system empty pipe is filled with liquid, the liquid column pushes the air in the pipe (system) to be discharged from the high-speed exhaust port of the air valve, the high-speed two-way intake and exhaust port 4 is open, and the second high-speed exhaust port 7 is also in the fully open position in the initial state. Observe the pointer of the pressure gauge 101 on the valve body. There is a water discharge port 102 on the side wall of the valve body 1. If it is found that the orifice pressure difference (that is, the pressure gauge reading) is lower than 30~35kPa, you can properly adjust the exhaust orifice regulating valve. Make it gradually increase, the increased orifice pressure difference is also the back pressure of the liquid column flow in the pipe (system), the greater the back pressure, the slower the liquid column flow, the appropriate liquid such as V=0.3m / s The flow velocity is the most ideal empty pipe wa...

Embodiment 2

[0046] Embodiment two: if Figure 2a , 2b , 2c, when suddenly stopping the pump or closing the valve or draining water (liquid), the liquid column at some positions in the pipe (system) may separate, and a vacuum (negative pressure) appears in the system. At this time, the external pressure is greater than The internal pressure and the external air pressure push the disc of the check valve, and together with the self-weight of the disc, press down the float disc of the main valve, the disc moves down, the suction port and the two-way intake and exhaust ports are opened, and the air passes through The second high-speed suction orifice and the first two-way orifice of the negative pressure suction valve enter quickly to minimize the negative pressure in the pipe to ensure the safety of pipe fittings and sealing interfaces.

Embodiment 3

[0047] Embodiment three: as Figure 2a , 2b , 2c, when the system pressure rises to close to atmospheric pressure but is still in the state of slight negative pressure (-0.1kPa~-5kPa), the spring force of the check valve in the suction orifice or the swing check valve The gravity of the valve disc just overcomes the resultant force of the internal and external pressure difference to close the orifice, stop a large amount of suction, and prevent high-speed exhaust. The valve only has high-speed suction capability under negative pressure but no high-speed exhaust capability under positive pressure (but because the seal is not tight, it still has a small amount of exhaust and small amount of suction after the check valve is closed), It can effectively inhale and break the vacuum, so as to meet some special requirements of the pipeline system. It is a new type of vacuum breaking and negative pressure protection equipment.

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PUM

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Abstract

The invention discloses a composite waterproof hammer air valve group with rear adjustment type separate orifices. The air valve group is installed on a liquid conveying pipe or a container system and comprises a high-speed air inlet and outlet valve, the negative pressure air suction second one-way orifice, a check valve, an outlet end rear air outlet adjustment valve, the second one-way air outlet orifice and a trace air outlet valve, wherein the trace air outlet valve is connected with a lateral boss drill hole of the high-speed air inlet and outlet valve through threads or a flange; the negative pressure air suction second one-way orifice and the check valve are connected to the right upper portion or upper portion of a valve cover above the high-speed air inlet and outlet valve; the high-speed medium-amount second one-way air outlet orifice and the air outlet adjustment valve are connected to the middle top or right upper portion of the valve over above the high-speed air inlet and outlet valve; and the second one-way air outlet orifice of the air valve group is adjusted and controlled by the air outlet adjustment valve. The air valve group can not only suck a large amount of air at high speed through the large orifice, but also exhaust a medium amount of air at high speed through the medium-sized orifice.

Description

technical field [0001] The invention relates to a post-adjustment type sub-orifice composite anti-hammer air valve group. Background technique [0002] The existing ordinary air valve uses the same physical orifice as the high-speed exhaust port and the high-speed suction port, which cannot be selected independently; the traditional high-speed exhaust port is usually too large in diameter and cannot be adjusted and controlled, while the The caliber is relatively small, the suction volume is obviously insufficient, and the risk of negative pressure is high; the trace exhaust orifice is single and small, only one size is 1.6mm, (see CJ / T 217-2013, the industry recommended standard for exhaust valves), Unable to meet the needs of large pipe trace exhaust. [0003] When the empty pipe of the pipeline or container system is filled with water or liquid, the high-speed exhaust orifice will exhaust at high speed, and a certain gas pressure difference will be generated at the orific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/22F16K11/04F16K17/12F16K17/20F16K47/02
CPCF16K11/04F16K17/12F16K17/20F16K31/22F16K47/02
Inventor 陈乙飞廖芝金陈银周
Owner ANHUI REDSTAR VALVE
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