Non-rising stem locking soft sealing gate valve
A technology of soft-sealed and gate valves, which is applied in the direction of sliding valves, valve details, valve devices, etc., can solve the problems of poor anti-theft performance and the safety of soft-sealed gate valves with hidden rods, and achieve the effect of improving safety and economic benefits
Pending Publication Date: 2020-02-18
SHANXI LONGDA YUWEI FLUID CONTROL EQUIP CO LTD
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Problems solved by technology
[0007] The purpose of the present invention is to provide a soft-sealed gate valve with hidden rod locking, so as to solve the problem that the existing soft-sealed gate valve with dark rod can be operated by anyone at will, resulting in poor security and anti-theft performance of the soft-sealed gate valve with dark rod
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[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0050] This application provides a soft-sealed gate valve with concealed stem locking. On the basis of not changing the overall structure of the existing concealed stem soft-sealed gate valve, and without affecting the original working principle and performance, the valve stem is set in two sections. Therefore, an adjustable key fit is formed between the two sections of the valve stem. When the key fit exists, the two sections of the valve stem can rotate at the same time, thereby facilitating the operation of the gate valve to open and close; when the key fit disappears, the two sections of the valve stem are relatively independent , Improve the safety of the gate valve.
[0051] Such as Figure 2 to Figure 5 As shown, the concealed rod locking soft-sealed gate valve in this application includes a valve...
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The invention provides a non-rising stem locking soft sealing gate valve. The non-rising stem locking soft sealing gate valve comprises a flashboard and a valve rod. The valve rod comprises a bottom rod and a top rod in the length direction of the valve rod. The bottom rod is provided with a first containing region, an elastic part and a movable block are mounted in the first containing region, the top rod is provided with a second containing region, and the second containing region is used for containing the movable block. When the elastic part is in a first state, the top rod and the bottomrod are in a combined state, so that key fit is formed between the bottom rod and the top rod, and when torque is applied to the top rod, the torque is transmitted to the bottom rod through key fit. When the elastic part is in a second state, the top rod and the bottom rod are in a separated state, and key fit between the bottom rod and the top rod disappears. When key fit exists, the two sectionsof the valve rod can simultaneously rotate, and therefore the valve rod can be conveniently operated to achieve switching on and off of the gate valve. When key fit disappears, the two sections of the valve rod are relatively independent, the safety of the gate valve is improved, people without fixed duties are effectively prevented from operating the gate valve, and economic benefits of water supply enterprises are increased.
Description
technical field [0001] The invention relates to the field of fluid sealing devices, in particular to a soft-sealed gate valve with hidden rod locking. Background technique [0002] Soft-sealed gate valve is a general-purpose gate valve commonly used in water supply systems. It is mainly divided into two types: open-stem soft-sealed gate valve and hidden-stem soft-sealed gate valve. Among them, the main material of the soft-sealed gate valve is ductile iron, which not only reduces the weight by about 20%-30% compared with the traditional gray iron gate valve, but also has good physical and mechanical properties. Excellent impact resistance ensures that the gate valve is not prone to deformation and cracking, which greatly improves the service life of the soft-sealed gate valve. At the same time, the soft-sealed gate valve adopts ductile iron as the main material, which also makes it have the advantages of low cost, reliable performance, simple operation, convenient maintenan...
Claims
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IPC IPC(8): F16K3/02F16K31/50F16K35/06
CPCF16K3/0254F16K31/508F16K35/06
Inventor 温国庭张永清吕振堤
Owner SHANXI LONGDA YUWEI FLUID CONTROL EQUIP CO LTD