Proportional throttle valve

A technology of proportional throttle valve and valve piston, which is applied to valve devices, valve details, fluid pressure actuators, etc., to achieve the effect of saving components and structural space

Inactive Publication Date: 2012-05-02
HYDAC FLUITECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The system described above thus has a large number of valves requiring corresponding installation space

Method used

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  • Proportional throttle valve
  • Proportional throttle valve

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Embodiment Construction

[0013] A proportional throttle valve 1 , which is directly controlled in its basic design, is shown in longitudinal section in the drawing. A magnet system 14 is arranged in the magnet system housing, wherein an armature 16 can be actuated by means of a direct current coil 15 . The magnet system 14 is designed as a pushable, path-controlled proportional magnet system, wherein, in the energized state of the direct current coil 15 , the armature 16 and the actuating element 17 operatively connected thereto point downwards in the direction of the fluid inlet 4 sports.

[0014] The actuating element 17 is operatively connected to the valve piston 2 which forms the throttling function. In the de-energized state of the DC coil 15 , the armature 16 , not shown in detail, the actuating element 17 and the valve piston 2 are moved by a spring 18 in the direction of the travel stop 6 . This corresponds to the closed state of the proportional throttle valve and the closed state between ...

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PUM

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Abstract

The invention relates to a proportional throttle valve comprising a valve piston (2) which is displaceably guided in the longitudinal direction in a valve housing (3) having a fluid inlet (4) and a fluid outlet (5) and is pretensioned by an energy accumulator, in particular in the form of a pressure spring, against a stroke stop (6) defining the closure position. The invention is characterized in that a pressure limiting valve (7) is integrated in the proportional throttle valve (1), wherein said pressure limiting valve allows to influence the fluid pressure on the rear side (8) of the valve piston (2) in order to allow the piston to move away from the stroke stop (6) in opposition to the pretensioning force when a predefinable pressure is exceeded at the fluid inlet (4).

Description

technical field [0001] The invention relates to a proportional throttle valve with a valve piston which is guided displaceably in the longitudinal direction in a valve housing with a fluid inlet and a fluid outlet and is guided by an energy store, in particular in the form of a compression spring. The energy store is preloaded against a travel stop that defines the closed position. Background technique [0002] Proportional throttle valves are often used if the height of the fluid flow through the valve should be varied steplessly depending on the applied magnetic flux of the coil controlling the valve piston. Considering the configuration as a slide valve, the opening cross-section depends on the piston position. If current is applied to the coil, a magnetic force proportional to the magnetic flux is generated, whereby the valve piston can be moved into the open position. In this case, a spring arranged on the back of the valve piston is usually tensioned, the spring forc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06B66F9/22F15B13/01
CPCF16K31/0668B66F9/22F15B13/0442F15B13/015Y10T137/7766Y10T137/7782Y10T137/7765
Inventor M·比尔P·布鲁克
Owner HYDAC FLUITECHNIK GMBH
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