Proportional valve

Abstract

The invention provides a proportional valve. A core pipe penetrates the centre of an upper end base, the lower end of the core pipe is provided with a first baffle, an inner magnetic core is arranged between the first baffle and the upper end base, a shell is arranged on the lower portion of the upper end base, an outer magnetic core is arranged on the upper portion of the inner side of the shell, a second baffle is arranged at the lower end of the shell, and a lower end base is arranged at the lower end of the second baffle; a first cavity is formed in the middle of the lower end base, an inlet and an outlet communicated with the first cavity are formed in the lower end base, and a moving rod is arranged in the core pipe; a third baffle is arranged on the moving rod in the core pipe, the position, above the third baffle, of the moving rod is sleeved with a compression spring, an adjusting part is arranged on the upper portion of the compression spring, and the adjusting part is screwed on the inner side of the core pipe; a closing part is arranged at the lower end of the moving rod, and a third sealing part is arranged at the lower end of the closing part; the position, above the closing part, of the moving part is provided with an elastic membrane; the position, above the elastic membrane, of the moving rod is provided with a coil, and the coil is located between the inner magnetic core and the outer magnetic core. The proportional valve is simple in design and compact in structure; compared with an existing proportional valve, the proportional valve has the beneficial effects that the size is reduced, the flow is ensured, the response is rapid, and sealing performance is good.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a proportional valve. Background technique [0002] Proportional valves are variable flow valves that can output a continuous flow range. In a proportional valve, the valve opening amount may be proportional to the solenoid current in the associated valve solenoid. Thus, a proportional valve can provide a regulated fluid flow that varies from zero flow to the maximum flow of the valve. [0003] Most of the existing proportional valves have many problems in the actual use process, which have a great impact on the entire production process, and generally have disadvantages such as complex structure, large volume, small flow rate, slow response, poor sealing, and large pressure drop. It affects production efficiency, wastes resources, and greatly increases production costs. Contents of the invention [0004] The invention proposes a proportional valve, which solves the problems ...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a proportional valve, which solves the problems of complex structure, large volume, small flow rate, slow response and poor sealing performance of the proportional valve in the prior art.

Images