Special leakage-free valve for dry chlorine
A special valve, non-leakage technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of short service life, poor sealing, etc., and achieve the goal of improving service life, long service life and ensuring reliability Effect
Inactive Publication Date: 2010-06-23
江苏江华阀业有限公司
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Problems solved by technology
[0004] The present invention aims to solve the problems existing in the prior art, such as poor sealing performance and short service life after long-term use, and provides a new special valve for non-leakage dry chlorine
Method used
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Embodiment Construction
[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings: the non-leakage dry chlorine special valve as shown in Figure 1 consists of a valve body 2, a valve seat 7, a valve disc 3, a flange nut 8, a valve stem 9, and a packing gland nut. 6. It is composed of valve cover 10, hand wheel 1 and so on. The valve disc 3 and the valve stem 9 are integrally forged. Double sealing surfaces 4 composed of conical surfaces and planes are processed on the valve disc 3 . The included angle of the cone surface of the double sealing structure is 60-80 degrees, and the included angle of the plane is 5-15 degrees. A horseshoe-shaped and dovetail-shaped groove 5 is processed on the valve seat, and polytetrafluoroethylene resin is pressed into the groove and molded to form a whole after sintering, so that the resin and the metal matrix are organically integrated. The flange nut 8 of the valve and the nut 6 of the packing gland are equ...
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Abstract
The invention discloses a special leakage-free valve for dry chlorine, which aims at overcoming the weaknesses of the prior art, and comprises a valve body, a valve seat, a valve clack, a valve cover and a valve rod, wherein the end part of the valve clack is provided with a dual-sealing structure. The sealing structure is collectively formed by conical surfaces and planes, wherein the angle of the conical surfaces is 60 to 80 degrees, and the angle of the planes is 5 to 15 degrees. The special leakage-free valve for the dry chlorine is further characterized in that a U-shaped groove and a dovetail groove are arranged on the valve seat, and the grooves are fulfilled with fluoroplastics and are integrated with a metal base body into a whole; a nut is provided with a plastic sleeve with the inner surface being coated with rust-proof grease; the valve cover is connected with the valve body through a mortice in a sealing way; and the valve body is made of the corrosion-resistant alloy steel material. The special leakage-free valve for the dry chlorine has the advantages of better sealability, longer service life, better safety, no maintenance, no leakage, safety and reliability.
Description
technical field [0001] The invention relates to a valve, in particular to a special valve for a chlorine gas delivery pipeline, which belongs to the field of special medium delivery pipeline valves in the chemical industry. Background technique [0002] In the past, chlorine valves in the chlor-alkali chemical industry were usually ordinary valves. Ordinary valves do not have special characteristics in terms of materials and structures. Under strong corrosion, toxic and harmful process conditions, they often have poor sealing performance, easy leakage, easy perforation of the shell, and short service life, which cannot meet the long-term and effective transportation of toxic media. special requirements. Once chlorine gas leaks out, it will bring serious consequences to the surrounding environment and personal safety. [0003] In recent years, according to the special requirements for the transportation of toxic and easily leaking media, and in view of some defects in the u...
Claims
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Login to View More IPC IPC(8): F16K1/36F16K1/42F16K27/00F16K27/12
Inventor 陈善俊
Owner 江苏江华阀业有限公司