Air corrosion resistant flat gate valve
A flat gate valve and gate valve technology, applied in sliding valves, valve details, valve devices, etc., can solve problems such as gate and valve stem corrosion, gate valve closure is not strict, leakage of liquid and other problems, to prevent air erosion, reliable sealing, The effect of resisting erosion
Inactive Publication Date: 2017-09-19
JIANGSU HENGXIN PETROCHEM MACHINERY
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Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides an anti-cavitation slab gate valve, which has the advantages of anti-air corrosion, etc., and solves the problem that the gate valve and the valve stem are corroded due to long-term contact with the air, causing the gate valve to be closed tightly and leaking. Liquid, which shortens the service life of the valve stem and gate, reduces production efficiency, and affects normal operations and production problems
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] see figure 1 , the present invention provides a technical solution: a cavitation-proof slab gate valve, including a hand wheel 1, the outer surface of the hand wheel 1 is sleeved with a plastic sleeve, the top of the hand wheel 1 is fixedly installed with a hexagonal bolt 2, and the top of the hand wheel 1 The bottom is fixedly installed with flange 3, the bottom of flange 3 is fixedly installed with bearing column 4, the outside of bearing column 4 is ...
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The invention relates to the technical field of valve manufacturing and in particular discloses an air corrosion resistant flat gate valve which comprises a hand wheel. The air corrosion resistant flat gate valve is characterized in that a hexagon bolt is fixedly mounted at the top of the hand wheel; a flange is fixedly mounted at the bottom of the hand wheel; a bearing column is fixedly mounted at the bottom of the flange; a gate valve adjusting device is fixedly mounted on the outer side of the bearing column; a rubber sealing ring is fixedly mounted at the bottom of the gate valve adjusting device; an accommodation box is fixedly mounted at the bottom of the rubber sealing ring; a galvanized shell is fixedly mounted on the outer surface of the accommodation box; a valve rod is fixedly mounted at the bottom of the bearing column; a shaft sleeve which is positioned at the top wall of the inner cavity of the accommodation box is fixedly mounted on the outer surface of the valve rod; and a screw nut base positioned in the inner cavity of the accommodation box is connected with the bottom end of the valve rod in a sleeved manner. The air corrosion resistant flat gate valve is reliable in sealing property, air can be effectively preventing from entering the box, and corrosion of the air to the interior of the flat gate valve is effectively prevented.
Description
technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to a cavitation-proof slab gate valve. Background technique [0002] Slab gate valve is a kind of sliding valve whose closing parts are parallel gates. It is an opening and closing device widely used in gathering and transportation pipelines. It can conveniently control the flow rate and cut-off of liquid. During the process, the wellhead is connected to the pipeline through the gate, and the flow rate and opening and closing are controlled through the gate. The closing member can be a single gate or a double gate with a stretching mechanism in between. The pressure of the gate against the valve seat The tightening force is controlled by the medium pressure acting on the floating gate or floating valve seat. [0003] At present, the existing slab gate valves on the market, because of long-term contact with air, corrode the valve stem and gate plate, resulting in lax clo...
Claims
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IPC IPC(8): F16K3/02F16K3/314F16K3/30F16K31/60
CPCF16K3/0227F16K3/30F16K3/314F16K31/60
Inventor 袁志国薛山薛友恒蒋林
Owner JIANGSU HENGXIN PETROCHEM MACHINERY