Double-runner cone valve

Abstract

The invention relates to a double-runner cone valve mainly comprising a valve seat. An annular groove communicated with a lower part hole is arranged at the upper part of the valve seat, and the mouth part of the annular groove is designed to be a conical mouth with a narrowing lower part; an annular conical bulge, suitable for opening and closing the conical mouth of the valve seat, is arranged at the lower part of the valve seat; a valve cover is sheathed on a valve plate and is matched with the valve plate is a sliding way, a space for the valve plate to move upwards is arranged between the valve plate and the valve cover, and the valve cover is internally provided with a spring; and a screw rod penetrates through the valve cover, the valve plate and a central hole of an adjusting barrel so as to fix the valve cover, the valve plate and the central hole with the valve seat. The double-runner cone valve has the advantages that the sealing performance is good, the bearing pressure ishigh, the size is small, the area of the space is large, the flow of overflowing is large, and the like.

Description

technical field [0001] The invention relates to a double-channel cone valve. Background technique [0002] Pump valves are key components of reciprocating pumps. Pump valves mostly use automatic valves that are closed by spring force. Flat valves and cone valves are widely used in automatic valves. Common plate valves such as figure 2 According to the results, the flat valve is widely used to transport water at room temperature, low viscosity oil or medium similar to clean water. It has a simple structure and is easy to manufacture, but its sealing performance is not as good as that of the cone valve, and it is mostly used for pumps with low discharge pressure. Appropriately changing the structure of the flat valve can evolve into a ring valve. Such as image 3 As shown, the annular valve is mainly composed of a valve seat 1', a valve plate 2', a valve cover 3', a spring 4', a screw sleeve 5', a valve stem 6', and a nut 7'. The outer circle of the upper part of the val...

AI Technical Summary

Problems solved by technology

) If the valve plate is not closed in time, the backflow of high-pressure liquid will occur, which will affect the volume coefficient (volume efficiency) of the pump

[0005] 2. When the valve plate is at the hysteresis height position, the valve plate is closed under the action of reverse high pressure, which will inevitably produce greater vibration and noise

[0006] 3. The pump valve works under the condition of frequent opening and closing, and the frequency is very high. The kinetic energy formed by the closing speed of the pump valve and its mass will cause an impact at the moment when the valve plate is closed.

If the closing speed of the valve plate is constant, the greater the mass of the valve plate, the greater the impact energy will be, which will accelerate the damage of the pump valve over time.

[0007] 4. The increase in the size of the pump valve will inevitably increase the size of the pump body, various connectors, and fasteners, which will inevitably increase the manufacturing cost

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