Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
  • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
  • F16K5/0626—Easy mounting or dismounting means
  • F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing

Definitions

• the invention relates to a plastic ball valve for water installations with an internal removable metallic control group intended for water pipes, heating systems, gas pipes and also air pipes with possible installation both as external pipe systems and as pipe systems which are integrated in a masonry.
• Valve replacement in such valve designs that are designed to be non-dismantled is relatively difficult and labor-intensive with regard to the necessary interventions in the piping system in the event of a malfunction, a malfunction due to contamination or during overhaul work.
• the purpose of the invention fulfills the implementation of a plastic ball valve for water installations with an internal removable metal control group, which consists of a plastic valve sleeve with opposite attachment pipe extensions, between which there is a cavity for inserting the inner one removable metallic control group, which is accommodated on the same axis transverse to the medium flow direction, the control group being formed from a spherical closure body provided with a flow opening, which is rotatably mounted in a pair of opposite pans, the upper part of the spherical Closure body is formed a guide groove, in which a lower cutting end of a guide pin, which passes through a locking member, is rotatably and provided with sealing rings, and at the other end dur ch the valve closure is pulled through, the outer end of the guide pin being provided with a securing groove and a securing device and with a shaped control hand strip of the valve and / or with a control key of the valve, according to the invention, the nature of which is
• the disassembly opening of the spherical closure body is alternatively provided with an internal thread.
• the guide pin is alternatively interchangeable with a pin which is axially extended and the valve closure is alternatively interchangeable with a valve closure which is axially extended, the Extended valve closure is provided with an outer thread of a protective cover in which the valve control key is housed.
• An advantage of carrying out the plastic valve for water installations according to the invention is, above all, that in the event of a malfunction or in the event of contamination, the removal of its inner metallic control group, in which it is not necessary, can be easily removed from the plastic sleeve of the valve to dismantle the row of pipes. In a similar way it is possible to remove the inner metallic control group even in cases where the plastic sleeve of the valve including the piping system is integrated into the masonry without it being necessary to destroy the masonry.
• the removal of the inner metallic control group can, if the dismantling opening of the spherical closure body is provided with an internal thread, be carried out with the aid of a standardized device on a kind of pulling pliers, consisting of an axial pull rod and a support. If the opening of the spherical lock is not provided with an internal thread, it is possible to use pull-out pulling pliers.
• the implementation according to the invention also has advantages in cases where the valves are connected to a remote-controlled drive unit, e.g. with a servo motor, an electric motor or similar devices and where simple and quick disassembly and assembly is desired for repairs.
• FIG. 1 shows in section the plastic ball valve for water installations in an assembly and construction elements of the inner metallic control group shown on a common axis
• FIG. 2 shows the locking member in plan view
• FIGS. 3 and Fig. 4 shows in section a pair of spacer pans.
• Fig. 5 is shown in a partial section an alternative implementation of the plastic ball valve for water installations which is provided with a protective cover, which is suitable for installations in the masonry.
• 6 shows a top view of one form of the valve control key.
• Fig. 1 is a composite plastic ball valve for water installations consisting of r , a plastic valve sleeve 3, in which two opposite attachment pipe lugs 14, 14 'are attached, which are made with the help of plastic welding technology with the end parts of the plastic pipes Pipeline are connected.
• the inner control group advantageously made of brass, consists of a spherical closure body 1, in which a flow opening 19 is formed, and which is supported in a pair of opposing pans 2, 2 ', preferably made of Teflon. The pair of opposed pans% X.
• a guide groove 20 is formed, in which a lower cutting end 6 of the guide pin 8 is provided with sealing rings 12.12 ', a securing groove 21 of the fuse 9 being formed on the other end of the guide pin 8.
• a removal opening is formed at the location of the guide groove 20 on the same axis o, which can alternatively be provided with an internal thread.
• a locking member 4 is inserted on the common axis o, the shape of which is shown in plan view in FIG. 2.
• the upper part of the plastic sleeve 3 is closed with a valve closure 7, on the molded end of which a handling bar 10 is placed, which is secured with a fuse 9 and a pressure cover 11, the pressure cover J_l made of plastic being of such a color that the standardized medium designation equivalent.
• FIG. 5 shows an alternative implementation of the plastic ball valve for water installations according to the invention, which together with the pipeline is intended for integration into the masonry.
• the length of the elongated guide pin 81 and also the length of the elongated valve closure 71 can be adjusted, with an outer protective shield 18 being fastened on the outer thread 16 of the valve closure 71, in the cavity 22 of which to the masonry Is facing level, the actuating key 17 of the valve is mounted and its shape is shown in a top view of FIG. 6.
• the remaining parts of the plastic ball valve for water installations correspond to the implementation in FIG. 1, including the plastic sleeve 3 and the spherical closure body 1 and its support.
• the removal of the inner metallic control group from the plastic sleeve 3 in the basic embodiment in FIG. 1 is based on the fact that the cover 11 and the handling bar K) are first removed by means of an axial pull and the fuse 9 is removed.
• the valve closure 7, the guide pin 8 and the locking member 4 will soon be removed.
• the spherical locking body 1_ With the aid of a device consisting of a threaded pull rod and a support, if the dismantling opening 5 is threaded and / or with the aid of pull-out pulling pliers, the spherical locking body 1_ from its storage between the pair of opposite pans 2.2 'is removed.
• the pair of opposing pans 2.2 ' is inserted into the plastic sleeve 3, which contracts after cooling, with the masses selected beforehand, thus providing optimum contact pressure on the spherical surface of the Closure body 1 is ensured.
• all work is carried out in the cold state and it is therefore necessary to use a different pair of spacer pans 15.15 'with different masses, the thicknesses b, b' of the new spacer pan pair being smaller than that Thickness a il of the pair of spacers 2.2 'originally used.
• Closure body 1 difficult to carry out, and the smaller thrust angle ⁇ 'facilitates this reassembly.
• the rest of the assembly process is carried out in the reverse order to that for disassembly.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Taps Or Cocks (AREA)
• Valve Housings (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=5469489

Family Applications (1)

Country Status (3)

Families Citing this family (3)

Family Cites Families (5)

• 2000
  • 2000-02-03 CZ CZ2000399A patent/CZ296012B6/cs not_active IP Right Cessation
• 2001
  • 2001-02-02 EP EP01949028A patent/EP1169589A1/de not_active Withdrawn
  • 2001-02-02 WO PCT/CZ2001/000005 patent/WO2001057421A1/de not_active Application Discontinuation

Non-Patent Citations (1)

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