Self-adaptive dust removal knife gate valve
A flapper valve, self-adaptive technology, applied in the direction of sliding valves, valve devices, engine components, etc., can solve problems such as easy jamming, dust leakage of flapper valves, serious wear of sealing strips, etc., and achieve enhanced sealing and dust removal effects Prevent and improve the effect of easy wear
Pending Publication Date: 2020-04-17
HUAQIAO UNIVERSITY
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Problems solved by technology
[0006] However, this sealing method makes the friction between the sealing strip and the plugboard very large, and it is easy to get stuck during the switch process, and the wear of the sealing strip is also very serious. After the sealing strip is severely worn, the plugboard valve will leak dust. Replace the seal
Method used
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Embodiment Construction
[0018] In order to better understand the technical solutions of the present invention, the embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.
[0019] refer to figure 1 Shown, a kind of self-adaptive dust-removing plug-in valve comprises: plug-in board 1, loading plate 3 and top cover plate 5; The middle of described plug-in board 1 and loading board 3 is provided with triple dedusting structure 2 arranged in sequence;
[0020] The up and down sides of described loading plate 3 are provided with guide rail 6, and described guide rail 6 upper and lower gaps are greater than the thickness 0.5mm of loading plate 3, and like this loading plate 3 has just had certain movable space on up-down direction; A spring device 4 is pre-tightened at a certain angle between the loading plate 3 and the top cover plate 5; the inserting plate 1 is connected to the valve stem, and the end of the valve stem is provided wit...
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The invention provides a self-adaptive dust removal knife gate valve comprising a gate plate, a loading plate and a top cover plate. Three dust removal structures are sequentially arranged between thegate plate and the loading plate. The upper side and the lower side of the loading plate are provided with guide rails. The vertical gap of the guide rails is larger than the thickness of the loadingplate. A spring device which is pre-tightened at a certain angle is arranged between the loading plate and the top cover plate. The gate plate is connected with a valve rod. The tail end of the valverod is provided with a hand wheel driving the gate plate to horizontally move. When the gate plate moves to a closing position, the loading plate makes contact with the upper guide rail, the spring device is in the loose state, and the three dust removal structures do not deform; when the gate plate horizontally moves from the closing position, the three dust removal structures drive the loadingplate to horizontally move in the same direction, the spring device is compressed, generated elastic reset force drives the loading plate to make contact with the lower guide rail, the three dust removal structures bear press force and then deform, and the three dust removal structures are in tight contact with the gate plate. The self-adaptive dust removal knife gate valve solves the problem thatthe gate plate is not smooth and gets stuck in the opening and closing process on the premise of keeping the original dust-proof effect.
Description
technical field [0001] The invention relates to the field of plug-in valves, in particular to designing a dust-collecting plug-in valve for desulfurization pipelines. Background technique [0002] The flapper valve is a relatively commonly used valve. The valve stem drives the valve plate to move to realize opening and closing. The valve plate is sealed and connected with the valve cavity through a sealing device. During the movement of the valve plate, there is friction between the valve plate and the sealing device. After long-term use, the sealing device is easily damaged, resulting in poor sealing reliability, and it is easy to cause the dust in the valve cavity to leak out of the valve body, affecting the site environment. . [0003] In addition, when the flapper valve is closed, the valve plate is located in the valve cavity, and dust will be deposited on the valve plate; when the flapper valve is opened, the dust on the valve plate will easily move out of the valve c...
Claims
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IPC IPC(8): F16K3/30B08B1/02B08B1/00B08B1/20
CPCF16K3/30B08B1/20B08B1/165B08B1/143
Inventor 游俊华林继铭杨天成程林
Owner HUAQIAO UNIVERSITY