CN2326814Y

CN2326814Y - Water-meter flexible joint

Info

Publication number: CN2326814Y
Application number: CN 97235273
Authority: CN
Inventors: 刘德荣
Original assignee: SHANGHAI WATER-METER FACTORY
Current assignee: SHANGHAI WATER-METER FACTORY
Priority date: 1997-08-15
Filing date: 1997-08-15
Publication date: 1999-06-30
Anticipated expiration: 2007-08-15

Abstract

The utility model relates to a flexible joint which is used for installing a water meter. The utility model is characterized in that the flexible joint is composed of a connecting pipe, a sealing screw cap, a tapered sealing ring, an O-shaped ring, and a connecting screw cap, wherein, one end of the connecting screw cap is connected with the water meter, and the other end of the connecting screw cap is connected with the sealing screw cap which is sheathed on the connecting pipe; the place between the water meter and the connecting screw cap are sealed by the O-shaped ring; the place between the connecting screw cap and the connecting pipe are sealed by the tapered sealing ring by means of the compression of the sealing screw cap. Due to the adoption of the structure, the pulling stress and the bending stress of the flexible joint of the water meter are dropped to zero, and therefore, the defect of tensile failure of the connecting pipe can be eliminated. The utility model can be popularized and applied in a water supply industry.

Description

The water meter flexible joint

The utility model relates to the flexible joint that a kind of water meter is installed usefulness.

Used in the market nominal bore is that the water meter of 15～40mm is installed, all adopt being rigidly connected as shown in Figure 1, be water meter on, downstream line 1 is fixed within the walls or is underground, socket 2 is housed respectively on it, take over 3, seal washer 4 and connect cap 5 each, all adopt between above-mentioned each component and the water meter 6 and be threaded, adapter one end that is connected with water meter and have shoulder, axial no latitude, but in as installed, it is often much longer than water meter length to leave the size L1 that water meter is installed, long at least 2～3mm, long at most 7～8mm, because it is last, downstream line had been fixed within the walls before water meter is installed or is underground, axially can't move, therefore, after in case water meter installs, socket, adapter and water meter certainly will bear huge tensile stress, in addition because last, downstream line when mounted can not be on same axis, therefore socket, adapter and water meter bear great flexural stress again, because the mechanical strength of socket and water meter is greater than adapter, so its result takes over often and broken, cause in " water overflow Kingsoft ", even cause serious consequence, and this situation takes place, special in the majority with the domestic meter of 15mm bore.

The purpose of this utility model is the shortcoming that overcomes existing watermeter connector, the water meter flexible joint of tensile stress and flexural stress between providing a kind of and can eliminate water meter and joint, taking over.

The technical solution of the utility model is that flexible joint is made up of adapter, sealing nut, conical seal ring, O shape circle, coupling nut, characteristics are, coupling nut one end is connected with water meter, the other end is connected with sealing nut on being sleeved on adapter, between water meter and the coupling nut by seal with O ring, coupling nut and take between compress by conical seal ring and by means of sealing nut and to seal.

The utility model is embodiment be described further in conjunction with the accompanying drawings.

Fig. 1 is the water meter schematic representation that is rigidly connected,

Fig. 2 is a water meter flexible joint structural representation;

Fig. 3 is the joint pipe structure schematic representation.

By shown in Figure 2, the water meter flexible joint is by taking over 8, sealing nut 9, conical seal ring 10, O shape circle 11, coupling nut 12 are formed, coupling nut 12 1 ends are connected with water meter 6 by internal thread, the other end is connected with sealing nut 9 on being sleeved on adapter, between water meter 6 and the coupling nut 12 by 11 sealings of O type circle, coupling nut 12 with take over 8 between reach to compress by conical seal ring 10 and seal by means of sealing nut 9.By shown in Figure 3, take over 8 and shoulder is not set at the end that is connected with water meter, take over easy for installationly and do not destroy and take over the surface for making with socket, offer slotted eye 13 at an end that is connected with water meter.

Owing to adopted the adapter of no shoulder, so any pulling force is no longer born in water meter and adapter, as water meter upstream and downstream pipeline not on same axis the time, owing to adopted conical seal ring and sealing nut, then allow the pipeline set-back under 15 ° of situations, the still stupefied sealing requirements that reaches, therefore, make the tensile stress and the flexural stress of water meter and adapter all be reduced to zero, thereby eliminate the worn-out disease of breaking of taking over.Because the utility model has above-mentioned advantage, can be in the water supply industry application that puts it over.

Claims

1, a kind of by adapter, seal ring, connect the water meter flexible joint that cap is formed, it is characterized in that, coupling nut (12) one ends are connected with water meter (6), the other end is connected with sealing nut (9) on being sleeved on adapter (8), by O shape circle (11) sealing, compress by conical seal ring (10) and sealing nut (9) between coupling nut (12) and the adapter (8) and seal between water meter (6) and the coupling nut (12).

2, water meter flexible joint according to claim 1 is characterized in that, has slotted eye (13) at adapter (8) one ends that are connected with water meter.