Glass fiber reinforced plastic check valve
A technology of check valves and glass fiber reinforced plastics, which is applied in the direction of control valves, valve devices, and functional valve types, etc. It can solve the problems of backflow at the outlet, no anti-backflow parts at the outlet, troubles in production and life, etc., and achieve the effect of preventing backflow
Inactive Publication Date: 2012-02-01
DALIAN XINGDA GLASS FIBER REINFORCED PLASTIC
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Problems solved by technology
[0002] In water supply and drainage projects and sewage treatment projects, the water in the canal or the pond is often discharged through the outlet. Because there is no anti-counterflow component at the outlet, sometimes the outlet will have backflow, which will bring troubles to production and life.
Method used
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[0009] Such as figure 1 , figure 2 Shown: 1 is the tubular valve body of fiberglass material, and its section is square, and there is the protruding edge 2 on the outer periphery of valve body 1. On the upper side of one end of the valve body 1, there is a supporting platform 3 and a rotating shaft 4 is installed, through which an end blocking plate 5 made of glass fiber reinforced plastic is connected in rotation. There is a counterweight 6 under the outer side of the end blocking plate 5, and the counterweight 6 and the end blocking plate 5 are integrally structured. The end blocking plate 5 just blocks the port of the valve body 1 by its own weight. A sealing strip 7 is provided between the end blocking plate 5 and the end of the valve body 1 .
[0010] Such as image 3 Shown: 8 is the side wall of the pond, this FRP check valve is installed at the bottom of the side wall, the water 9 on the inside can be discharged through the inside through hole of the valve body 1, ...
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The invention discloses a glass fiber reinforced plastic check valve, which is provided with a tubular valve body, wherein a protuberant pyramid is arranged outside the valve body; an end head plug plate is rotatably connected with a rotating shaft above one end of the valve body; a counter weight is arranged below the outer side of the end head plug plate; the end head plug plate just plugs a port of the valve body by means of dead weight of the end head plug plate; and a sealing strip is arranged between the end head plug plate and an end head of the valve body. The glass fiber reinforced plastic check valve is arranged at the bottom of a side wall of a water channel or a pond, the end with the end head plug plate is positioned on the outer side, and water flow on the inner side has pressure on the end head plug plate, so that the end head plug plate can rotate to open a through hole on the inner side of the valve body to discharge water. If the water exists on the outer side, backward flow can possibly occur; and as the pressure on the outer side of the end head plug plate is larger than that on the inner side, with the dead weight of the end head plug plate, the through hole of the valve body can be plugged to prevent the backward flow.
Description
technical field [0001] The invention relates to a check valve, in particular to a glass fiber reinforced plastic check valve used to prevent backflow of rivers, rivers, tides and the like. Background technique [0002] In water supply and drainage projects and sewage treatment projects, the water in the canal or pond is often discharged through the discharge outlet. Because there is no anti-counterflow component at the discharge outlet, sometimes the discharge outlet will have backflow, which will bring troubles to production and life. Contents of the invention [0003] The object of the present invention is to provide a FRP check valve with simple structure, good anti-backflow effect and overcoming the backflow phenomenon, so as to overcome the deficiencies in the prior art. [0004] The FRP check valve of the present invention has a tubular valve body with a protruding edge on the outside of the valve body, and an end blocking plate is connected to the upper side of one ...
Claims
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Inventor 张少勇
Owner DALIAN XINGDA GLASS FIBER REINFORCED PLASTIC