CS219722B1 - Four-way cock with rotation travelling inner cylinderical body - Google Patents

Description

The invention finds application in all sectors of the national economy.

SUMMARY OF THE INVENTION The present invention provides a four-way tap in which the distribution of the working medium is effected by a rotatably movable inner cylindrical body.

The essence of the invention is that the rotationally movable inner cylindrical body is provided with two symmetrical cutouts, on whose circumference dovetail grooves are provided for receiving ring-shaped sealing rings.

219722 219722

BACKGROUND OF THE INVENTION The present invention relates to a four-way tap in which the distribution of a working medium is provided by a rotatably movable inner cylindrical body. In the four-way taps used so far, the valve body is provided with four necks with 90 ° to each other. The alternating interconnection of two mutually perpendicular necks simultaneously is carried out by rotary adjustment of the conical body, which is guided in the conical sealing surface of the seat of the foot body. Tightness between opposite functional surfaces is achieved by pushing the movable conical body into the seat of the tap body with precisely machined conical contact surfaces. The thrust force required for pressing is achieved by a tightening screw or a sealant pressure in the plug seal.

The disadvantage of these taps is the large adjusting forces due to considerable frictional forces in the conical surfaces. As a result, motor drive requires more emphasis on the propulsion dimension.

For more demanding operations, such as flow of two different working media, where any leakage is undesirable, the taps are unusable on this principle. Due to the mechanical impurities, the sealing surfaces are extinguished due to mechanical impurities and the tightness is impaired.

These shortcomings result in frequent maintenance, in which it is necessary to push the conical body into the seat of the cock body while simultaneously grinding the contact surfaces.

The above-mentioned disadvantages are eliminated by a four-way valve with a rotatably movable inner cylindrical body according to the invention, characterized in that the rotationally movable inner cylindrical body is provided with two symmetrical cut-outs, on whose circumference dovetail grooves are provided for receiving ring-shaped sealing rings.

The drawing shows an exemplary

Claims (2)

PRESENTION A four-way tap with a rotatably movable inner cylindrical body for distributing the working medium simultaneously into two perpendicular necks, consisting of a tap body with four oval necks rotated 90 ° with each other and an inner cylindrical body, a four-way stopcock according to the invention, where fig. 1 is a cross-sectional plan view of a four-way cock where the plane of elevation B-B passes through the axis of the two opposing sides of the body and the contact cylindrical surface of the body and the rotationally movable inner cylindrical body with symmetrical cutouts. Further, there are four partial cuts on the rotatably movable inner cylindrical body to show the dovetail groove with the seal and FIG. 2 is a cross-sectional view of a four-way cock where the plane A-A passes through the axes of the body orifices and is perpendicular to the axis of the rotatably movable inner cylindrical body. The four-way cock consists of a body 1 with four oval necks 2 rotated 90 ° with each other and a rotatably movable inner cylindrical body 3 with symmetrical cut-outs 7. At the periphery of the two symmetrical slots 7 are dovetail grooves 6 for receiving the sealing rings 4. The inner cylindrical body 3 is provided with a pin 5 for connecting the drive unit. The inner cylindrical body is not demanding on the accuracy of the axial bearing, which makes it possible to produce a double four-way valve, where two rotating movable inner cylindrical bodies are connected one above the other in a single shaft. At the same time, this solution reduces costs, resulting from less construction requirements, simplifies wiring, switchgear, saves one drive unit, solenoid valves and material. A further advantage is the formation of a groove for receiving the seal on the symmetrical cut-outs, thereby allowing two different working media to flow simultaneously without the risk of mixing with one another. The device of the invention is not maintenance-intensive. The device according to the invention can be used in cases where it is necessary to achieve a high tightness of the device, which has been successfully verified in the absorption air dehumidifiers of the ozonization units. characterized in that the rotatably movable inner cylindrical body (3) is provided with two symmetrical cutouts (7), on whose circumference dovetail grooves [6] are formed to accommodate ring-shaped sealing rings (4). 1 sheet of drawings 219722