Integral whole-through diameter ball valve

Abstract

The present invention provides an integral whole path ball valve which belongs to mechanical technique field and solves the problem that the existing flange type ball valve is small in flux and bad in safety. The integral whole path ball valve includes a valve body, a valve core, a valve spindle and a handle, the valve core is mounted in the valve body. The valve spindle passes through the valve body with inner end connected to the valve core and the outer end connected to the handle. The valve body is still disposed with a cylinder shape regulation valve seat which is connected to the valve body by screw and is abutted to the valve core. The valve body is an integral structure, and is disposed with a mounting hole on its top, the diameter of the mounting hole is larger than the outer diameter of the valve core, a press cover is disposed at the mounting hole and is connected to the valve body, and the valve spindle passes through the press cover. The integral whole path ball valve is simple in structure, low in cost, and can be adapted to various large flux pipe systems.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a ball valve, in particular to a full-bore ball valve with integral design. Background technique [0002] There are generally two types of ball valves: threaded ball valves and flanged ball valves. The threaded ball valve is small in size and easy to install, but it has the disadvantages of small flow rate and poor sealing performance. The flanged ball valve includes a combination of two bodies and three bodies. Although it does not have the problem of small flow, it is a ball valve composed of multiple bodies after all, which makes the sealing performance of the flanged ball valve and the valve body tightness. Strength cannot be guaranteed. [0003] For this reason, someone has designed a kind of integrated ball valve again on the basis of flange type ball valve, for example " stuffing bin integral ball valve " that Chinese Patent No. 02247903.1 provides. It includes a valve ...

AI Technical Summary

Problems solved by technology

However, due to this design principle, the valve core is installed at the port of the valve body during the assembly process, so that the outer diameter of the valve core must be smaller than the size of the valve body port.

At the same time, since the ball valve is a flanged ball valve, the specification and size of the flange are fixed, which inevitably makes the pore diameter of the valve core smaller, resulting in a smaller flow rate.

[0005] Obviously, the use of the above-mentioned ball valve will lead to changes in the fluid pressure of the pipeline system, and the ball valve is mainly used in high-pressure, high-temperature fluid pipeline systems, so the use of the ball valve will lead to problems such as poor safety

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