CN2426548Y

CN2426548Y - Plastic ball valve with bushings

Info

Publication number: CN2426548Y
Application number: CN 00236972
Authority: CN
Inventors: 张万武
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-02
Filing date: 2000-06-02
Publication date: 2001-04-11
Anticipated expiration: 2010-06-02

Abstract

The utility model discloses a plastic union ball valve, comprising an outer valve body, and a ball valve core arranged in an inner cavity of the outer valve body. The utility model is provided with a handle. Union joint bodies arranged at both ends of the outer valve body are fixedly connected by a locking nut. The ball valve core of the utility model is integral structure and is directly inlaid inside the outer valve body of one-step molding. Sealing rings are arranged between the ball valve core and the inner end surfaces of through holes at the both ends of the outer valve body. The utility model has the advantages of few leakage positions, reliable sealing performance, and long service life.

Description

Plastics are by making ball valve

The utility model belongs to a kind of multiple-way valve, is that a kind of plastics are by making ball valve specifically.

At present, disclosed plastics are by making ball valve in this technical field, it is to adopt to divide body structure to be assembled, mainly have technology core hole by outer valve and inner chamber thereof, the ball core that installs split within it respectively links to each other with club, plug wire is set at the two ends of ball core limits deviating from of ball core and be fixed on the outer valve, be connected in by making on the fittings body by locknut.Because above-mentioned plastics are many by the combiner that makes ball valve adopt, the materials amount is big, and complex structure causes manufacturing efficiency low; The connection matching part of this ball valve is more on the other hand, easily causes leakage in frequent using process, poor sealing performance, thereby bring a large amount of maintenance works, influenced normal using effect.

The problem that the purpose of this utility model exists for the above-mentioned technology of solution, and a kind of minimizing component, valve body once-through are provided, the plastics that reach better sealing effect are by making ball valve.

For achieving the above object, technical solution of the present utility model is finished like this: a kind of plastics are by making ball valve, comprise outer valve, be provided with the ball valve core of central through bore by the outer valve inner chamber, the two ends of outer valve have by making fittings body, fixedly connected by locknut, the handle that install the upper end of ball valve core is formed, wherein ball valve core body is same integral body with the upper end that is used to be connected handle, directly be embedded in one-time formed outer valve inner chamber, between ball valve core and the outer valve two ends through hole interior edge face seal ring be set.

The utility model is compared with prior art to have characteristics and is: have the once-through of the valve body of employing, making ball valve core and valve rod is overall structure, make its ball valve core and seal ring as mosaic component, directly inlay and be installed in the outer valve inner chamber, thereby make two bodies form indivisible valve body structure.So not only reduced component and leakage position, reached reliable sealing effect, but also improved manufacturing efficiency, reduced manufacture cost, thereby also prolonged working life greatly.

Embodiment is to this novel being further described in conjunction with the accompanying drawings.

Fig. 1 is that plastics are by the topology view that makes ball valve.

By shown in Figure 1, a kind of plastics are by making ball valve, it adopts the outer valve 3 of threeway, inlay by the inner chamber at outer valve 3 middle parts a ball valve core 2 that has a through hole is set, ball valve core 2 is the ends of extending that the body by the ball valve core constitutes with being used for connection handle 9 upper ends, the abutting end of handle 9 inserts in outer valve 3 through holes, opening of rotatable handle 9 control ball valve cores 2, close, ball valve core 2 body tops and outer valve 3 abutting ends are provided with O-ring seals 8, prevent leaking of top, between the abutting end of ball valve core 2 and outer valve 3 two ends through holes 7 interior edge faces seal ring 4 is set, sealing ring 4 is together to be embedded in the outer valve 3 as inserter with ball valve core 2, thereby form and outer valve 3 indivisible valve body partss, the two ends of outer valve 3 are respectively equipped with O-ring seals 5 and by making fittings body 6, will be by making fittings body 6 be fixedly connected on the outer valve 3 by the locknut 1 of configuration.The shape of outer valve 3 inner chambers should be coincide with the sphere abutting end of ball valve core 2, same seal ring 4 is answered friction fit with the fitting surface of ball valve core 2, prevent to leak along the top of ball valve core 2, handle 9 counterfaces should be pressed on the O-ring seals 8 of ball valve core 2 longitudinal ends simultaneously, make its distortion to realize better double-layer seal effect.

Plastics are by making ball valve core 2 and outer valve 3 in the ball valve need not assemble, but comprise seal ring 4 as core by the ball valve core 2 of injection moulding, then once-through outer valve 3, ball valve core 2 be included in inner chamber make it become indivisible one-piece element, reduced leakage position.

Claims

1, a kind of plastics are by making ball valve, comprise the ball valve core that outer valve and inner chamber thereof are provided with, and handle is installed, by the two ends of outer valve have by making fittings body, fixedly connected by locknut, it is characterized in that: described ball valve core (2) is the overall structure body, directly is embedded in one-time formed outer valve (3) inner chamber, between ball valve core (2) and outer valve (3) the two ends through hole interior edge face seal ring (4) is set.

2, by the described plastics of claim 1 by making ball valve, it is characterized in that: handle (9) abutting end should be pressed on the O-ring seals (8) of ball valve core (2) longitudinal end.