Novel stop valve sealing structure
A sealing structure, globe valve technology, applied in shaft seals, lift valves, valve details, etc., can solve the problems of poor sealing effect, easy leakage of O-rings, time-consuming and laborious, etc., to solve the problem of distortion, improve sealing performance, improve The effect of safety features
Pending Publication Date: 2018-09-14
WUHU SANHUA AUTOMATION COMPONENTS
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- Abstract
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Problems solved by technology
At present, the valve stem of the stop valve is easy to pop out during use; when the air conditioner is running, the O-ring is in direct contact with the refrigerant, and the O-ring is prone to leakage due to temperature and pressure changes; the valve stem is driven by threads, and the O-ring and the valve stem Rotating and moving up and down together, the O-ring twists seriously, resulting in leakage and poor sealing effect; and after the valve stem is fully opened, the valve cap needs to be reinstalled and tightened with a wrench for secondary sealing, which is time-consuming and laborious
Method used
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Embodiment Construction
[0012] The present invention will be further described below in conjunction with accompanying drawing:
[0013] Such as figure 1 As shown, the present invention includes a valve body 5 in which a valve stem 2 is arranged. Between the valve body 5 and the valve stem 2, a gasket 3 and an O-ring 4 are sequentially arranged from top to bottom. A protrusion 7 is provided on the valve body on the top of the gasket 3 . The O-ring 4 is made of rubber material. A valve seat 6 is provided near the bottom of the valve body 5 , and a valve cap 1 is provided on the top of the valve body 5 . Bonnet 1 has the effect of dustproof and waterproof. The valve cap 1 is made of thermoplastic resin material. When working, turn the valve stem 2 clockwise, the valve stem 2 and the valve seat 6 will close, and cut off the circulation of the internal medium; turn the valve stem 2 counterclockwise, the valve stem 2 and the valve seat 6 will open, and open the circulation of the internal medium, when...
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The invention discloses a novel stop valve sealing structure, and relates to the technical field of air conditioner stop valves. The novel stop valve sealing structure comprises a valve body; a valverod is arranged in the valve body; a gasket and an O-shaped ring are arranged between the valve rod and the valve body in sequence from top to bottom; a valve base is arranged on the valve body near the bottom; and a valve cap is arranged at the top of the valve body. The novel stop valve sealing structure thoroughly solves the ejection problem of the valve rod; when the valve rod is fully opened,the valve rod and the valve body form an upper seal to stop the O-shaped ring from contacting with a refrigerant in a system, so that the sealing performance and the service life of the O-shaped ringare improved; and when the valve rod is fully opened, the valve rod and the valve body perform secondary sealing to replace secondary sealing through a valve cap and a valve body of a traditional product, so that the sealing torque is low, the valve cap can be tightened by a hand, and both time and labors are saved.
Description
technical field [0001] The invention relates to the technical field of an air conditioner stop valve, in particular to a novel sealing structure of a stop valve. Background technique [0002] Globe valves are used in air conditioning systems and are installed at the connection between indoor and outdoor units. The stop valve can close the internal passage of the valve by operating the valve stem, and the stop valve can be used as an inspection valve for vacuuming, adding refrigerant and maintenance. At present, the valve stem of the stop valve is easy to pop out during use; when the air conditioner is running, the O-ring is in direct contact with the refrigerant, and the O-ring is prone to leakage due to temperature and pressure changes; the valve stem is driven by threads, and the O-ring and the valve stem Rotating together and moving up and down, the O-ring twists seriously, causing leakage and poor sealing effect; and after the valve stem is fully opened, the valve cap n...
Claims
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IPC IPC(8): F16K1/00F16K1/32F16K41/04
CPCF16K1/00F16K1/32F16K41/04
Inventor 江桂红蔡荣生陈玉富丁永均
Owner WUHU SANHUA AUTOMATION COMPONENTS