Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1992-05-12
1994-02-15
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
25112903, 251251, 137271, 137797, F16K 3700
Patent
active
052858146
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a setting device for the manual setting of a valve according to the preamble of claim 1.
The setting device according to the invention is intended to be used with different kinds of valves, especially valves with a spring biased valve body. The invention aims to solve a special problem arising when arranging a number of relatively small valves, e.g. electrically controlled so-called pilot valves, in a valve battery. Then, the handle portions of the setting devices that are needed for the manual control of the respective valve, may either be made easily controlled by hand, in which case they must be given relatively large dimensions and consequently do not permit a compact arrangement of a number of valves close to one another, or be provided with a slot for a screw driver, in which case they may be made relatively small while at the same time requiring a free space axially relative to the handle portion for the application of the screw driver. In the above application, i.e. in connection with pilot valves, the setting devices are used for a manually controlled setting of the respective pilot valve, e.g. in connection with the initial adjustment or supervision of a pneumatic system with cylinders, valves etc. In normal operation of such a system, however, the pilot valves work under the control of electrical signals, wherein some other pneumatic component, e.g. a directional valve connected to an operating cylinder, is controlled in response thereto.
Thus, the underlying problem of the invention is to achieve a handle portion of a setting device having small dimensions and making simple control possible, e.g. by means of a thin, elongated object, such as a screw driver, also in very limited areas due to the compact arrangement of a number of valves close to one another.
This problem is solved by the principle design of the handle portion of the setting device disclosed in claim 1 with two wing portions extending in opposite directions circumferentially. The setting device may be easily rotated in the desired direction by applying a screw driver or the like against one of the wing portions, so that an axis portion of the setting device is rotated and the valve is hereby switched over. It is understood that manoeuvring of the setting device can be achieved very easily in this manner, even if the space around the handle portion is very limited. The screw driver does not have to be directed axially but may be oriented in different directions in view of the available space.
Further useful characteristics of the handle portion of the setting device according to the invention are specified in claims 2-8.
The invention makes a compact arrangement of valves possible, e.g. in a row with valves arranged in pairs with the handle portions of the setting devices facing each other in a relatively narrow space between the two valves in the respective pair.
The invention will be described in greater detail below with reference to the appended drawings.
FIG. 1 shows a valve battery with a number of connection plates for the compact mounting of a row of directional valves and associated, so-called pilot valves;
FIG. 2 shows a central section of two pilot valves placed close to one another (without cable connection) and provided with setting devices according to the invention;
FIGS. 3a and 3b show a pilot valve according to FIG. 2 in perspective views with the handle portion of the setting device in two different positions;
FIG. 3c shows the pilot valve in a perspective view from below;
FIGS. 4a and 4b show the setting device in two different perspective views; and
FIGS. 4c and 4d show the setting device in end views from the front side and from the back side, respectively.
In FIG. 1 a mounting plate is shown with a row of connection plates 1, 2, 3 mutually screwed together for the connection of a corresponding number of directional valves 4 (only one is shown in the figure) and associated, electrically controlled, so-called pilot valves 5a, 5b. The respective pilot valve is switched over by way of ele
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Merz Peter
Pettersson Hans
AB Mecman
Chambers A. Michael
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