CN201386817Y

CN201386817Y - Check ball valve

Info

Publication number: CN201386817Y
Application number: CN200920114792U
Authority: CN
Inventors: 章成选; 李永喜; 张延斌; 高扬
Original assignee: KCM VALVE CO Ltd
Current assignee: KCM VALVE CO Ltd
Priority date: 2009-03-06
Filing date: 2009-03-06
Publication date: 2010-01-20
Anticipated expiration: 2019-03-06

Abstract

The utility model relates to a check ball valve comprising a valve body, a valve cover, a valve seat, a valve rod, a valve core and an operating mechanism, wherein the valve cover is fixedly connected with the valve body; one end of the valve rod passes through the valve body to be connected with the valve core inside the valve body; the valve core and the valve seat are in air-tight fit with each other by extrusion; the check ball valve is characterized in that the passage of the valve core is internally provided with a check plate capable of completely sealing and closing the passage; and the check plate and the valve core form the check valve. The check ball valve has the following advantages: one check plate is added inside the passage of the valve core of the ball valve, and the check plate is hinged in the passage of the valve core; and the structure is used so that the ball valve has the function of adjusting flow rate and also has the function of stopping flow in single direction simultaneously, thereby realizing multiple functions in one valve.

Description

The non-return ball valve

Technical field

The utility model relates to a kind of ball valve, relates to a kind of non-return ball valve in particular, is mainly used in relevant industries such as pipe-line system.

Background technique

At present, for preventing that medium in the pipeline from flowing backwards an one way stop peturn valve can be installed mostly in the pipe-line system engineering, and for convenient fed sheet of a media is regulated in the pipe-line system engineering, one independently ball valve or stopcock etc. then generally can be installed, adopt this mode not only directly to improve cost of material in the pipe-line system, and improved installation and the maintenance cost in the pipe-line system simultaneously, though existing valve structural type is varied, but the function that does not also have a valve to have check function simultaneously and regulate flow in the market, for satisfying market demand, a kind of valve with unidirectional check function and while tool flow regulating function arises at the historic moment.

Summary of the invention

For meeting the market requirement, solve and also have technical problems such as flow regulating function when a kind of valve has unidirectional check function, the utility model provides a kind of non-return ball valve, it is simple in structure, reasonable in design, can effectively solve and also have flow regulating function when valve has unidirectional check function.

For solving above technical problem, the technological scheme that the utility model is taked is a kind of non-return ball valve, it includes valve body, valve gap, valve seat, valve rod, spool and operating device, described valve gap is fixedlyed connected with valve body, and the spool that described valve rod one end passes in valve body and the valve body is connected, described spool and valve seat crush seal cooperation mutually; It is characterized in that being provided with in the described valve core channel check plate of hermetically closing passage fully, this check plate and spool constitute a safety check.

Further, described check plate is provided with a Sealing near a side of fed sheet of a media entrance point, and the sealing part is sealed and matched mutually with the inwall of valve core channel and is fixedly mounted on the check plate.

Further, the side near valve fed sheet of a media outlet end on the described check plate also is provided with a boss that cooperates with the valve core channel top, and this boss is fixed on the check plate.

The beneficial effects of the utility model are to set up a check plate in the valve core channel of ball valve, and this check plate is hinged in the valve core channel; Adopt this structure, not only make the ball valve tool regulate traffic engineering capability, also make ball valve have unidirectional check function simultaneously, thereby realize multi-purpose valve.

Description of drawings

Fig. 1 is the sectional structure chart of the utility model embodiment non-return ball valve

Fig. 2 is the sectional structure enlarged view of the utility model embodiment check plate

Specific embodiments

Below in conjunction with accompanying drawing the utility model mode of execution is described further:

Extremely shown in Figure 2 as Fig. 1, a kind of non-return ball valve of the utility model, it includes valve body 1, valve gap 2, valve seat 3, valve rod 4, spool 5 and operating device 6, described valve gap 2 is fixedlyed connected with valve body 1, and the spool 5 that described valve rod 4 one ends pass in valve body 1 and the valve body 1 is connected, described spool 5 and valve seat 3 crush seal cooperation mutually; Also to have flow regulating function when a kind of valve has unidirectional check function in order solving, to be provided with the check plate 7 of hermetically closing passage 51 fully in the described valve core channel 51, this check plate 7 constitutes a safety check with spool 3; The utility model is to improve on the basis of existing ball valve, combines with the valve core structure of ball valve by the check plate structure with safety check, thereby realizes multi-purpose valve; Owing in the passage 51 of spool 5, set up a check plate 7, when making ball valve not only tool is regulated traffic engineering capability, also have unidirectional check function, adopt this structure, can effectively meet the need of market, reduce the cost of material and the artificial peace installation and maintenance cost of pipe-line system.

In the present embodiment, sealability when guaranteeing that check plate 7 is in closed condition, prevent leakage phenomenon, described check plate 7 is provided with a Sealing 71 near a side of ball valve fed sheet of a media entrance point, and sealing part 71 is sealed and matched mutually with the inner circumferential wall of valve core channel 51 and is fixedly mounted on the check plate 7; Adopt a Sealing 71, can effectively guarantee the sealability of valve core channel 51 when check plate 7 is in closed condition; Certainly, also can not establish Sealing 71, directly adopt check plate 7 to match, can reach identical purpose equally with valve core channel 51 inwalls; Secondly, Sealing 71 also can not be arranged on the check plate 7, such as is arranged on the inner circumferential wall of valve core channel 51, can reach equally with identical purpose, specifically adopts which kind of mode of execution, then decides according to the fed sheet of a media in the pipe-line system; And if the mode of execution of employing Sealing because the space of valve core channel 51 is limited, is unfavorable for the assembling of Sealing 71, therefore, the mode of execution that Sealing 71 is arranged on the check plate 7 is the preferential mode of execution of present embodiment.

In the present embodiment, for prevent check plate 7 when opening and valve core channel 51 inwall tops fit, influence closing of check plate 7, side near valve fed sheet of a media outlet end on described check plate 7 also is provided with a boss 72 that cooperates with valve core channel 51 tops, and this boss 72 is fixed on the check plate 7; Adopt this structure, can effectively prevent check plate 7 when opening state and valve core channel 51 inwall tops fit, thereby can effectively guarantee the unlatching of check plate 7 or the flexibility when closing; Certainly, can boss 72 be arranged on the check plate 7 yet, such as be arranged on the top end of valve core channel 51, can reach identical purpose equally, but, influence the assembling of boss 72 because the space in the valve core channel 51 is limited, therefore, the mode of execution of present embodiment is preferential mode of execution.

The foregoing description should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.

Claims

1. non-return ball valve, it includes valve body, valve gap, valve seat, valve rod, spool and operating device, described valve gap is fixedlyed connected with valve body, and the spool that described valve rod one end passes in valve body and the valve body is connected, described spool and valve seat crush seal cooperation mutually; It is characterized in that being provided with in the described valve core channel check plate of hermetically closing passage fully, this check plate and spool constitute a safety check.

2. a kind of non-return ball valve according to claim 1 is characterized in that described check plate is provided with a Sealing near a side of fed sheet of a media entrance point, and the sealing part is sealed and matched mutually with the inner circumferential wall of valve core channel and is fixedly mounted on the check plate.

3. a kind of non-return ball valve according to claim 1 and 2 is characterized in that the side near valve fed sheet of a media outlet end also is provided with a boss that cooperates with the valve core channel top on the described check plate, and this boss is fixed on the check plate.