Novel flap valve opening and closing device and operation method thereof

Abstract

The invention relates to a novel flap valve opening and closing device and an operation method thereof. The novel flap valve opening and closing device mainly comprises an inclined rod, a telescopic rod, a hinge bolt, a spring, a mechanical latch, a flexible material layer, a force sensor, a control port and the like; the flap valve opening and closing device is a rod system which is mainly controlled by the telescopic rod and the inclined rod, the telescopic rod is divided into five stages from small to large according to the rod diameter of the telescopic rod, and each telescopic stage is adjusted by one stage corresponding to the opening degree of a flap valve; and the telescopic rod is of a detachable structure, one end of the telescopic rod is connected with a flap valve body throughthe hinge bolt I, and the corresponding other end of the telescopic rod is connected with the inclined rod through the hinge bolt II. The novel flap valve opening and closing device is simple in structure and novel in conception, it can be guaranteed that the flap valve can be smoothly and timely opened when a pump station is started, the opening degree of the flap valve can be adjusted accordingto the flow during operation of the pump station and is kept stable after adjustment, it can be guaranteed that the flap valve is timely closed through the dead weight of the flap valve when the pumpstation is shut down, and impact force is reduced to a great extent.

Description

technical field [0001] The invention relates to a novel opening and closing device for a flap door, in particular to a novel opening and closing device for a flap door and an operation method thereof, belonging to the field of hydraulic engineering machinery. Background technique [0002] The flap valve is a cut-off device mainly used at the outlet of the pump station. It is closed when the unit is shut down to block the water flow and prevent the water flow from entering the pump unit and causing the unit to reverse. At present, there are many types of flap valves, but the specific technology is not perfect, and there are two main problems: one is that the head loss at the outlet of the water pump is large, and when the pump station is running, the opening angle of the flap door is not correct. It will be very large, and the water blocking will cause a large loss; second, when the pump unit is shut down, the flap door will be closed quickly under the combined action of its ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the prior art. In view of the above-mentioned solution to the problem that the flap door is not very open when the pump station is running, the water blocking will cause a large loss and when the water pump unit is shut down, the flap door will be affected by other factors. Under the combined action of its own gravity and the water pressure outside the door, it closes quickly, which will generate a large impact force on the pump body and cause extremely adverse effects on the structure of the flap door itself and other buildings connected to the pump. It provides a new type of valve. The flap door opening and closing device and its operation method can not only ensure that the flap door can be opened smoothly and in time when the pump station is turned on; the flap door opening can be adjusted according to the flow rate and remain stable during operation; It can ensure that the flap door is closed in time by gravity and greatly reduces the impact force

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