CN209325107U - A kind of single shaft Kong Xuan opens check-valves - Google Patents

Abstract

The utility model relates to a kind of single shaft Kong Xuan to open check-valves, it mainly include the valve body equipped with fluid import and export, cover the valve deck of mouth in the valve body, valve seat, flap, valve shaft and the rocker arm of valve body fluid inlet side are set, the rocker arm is fixedly connected by fastener with flap, its both ends of axle sleeve sealing that valve shaft passes through the setting of rocker arm upper end is hinged on valve body two sidewalls；It is characterized in that, described valve shaft one end is hinged in the axis hole in valve body one side wall by the sealing of axis hole silk plug, the valve shaft other end is hinged in the axis blind hole that another side wall of valve body opens up by axis hole axle sleeve；The flap is complete encapsulated flap.The beneficial effects of the utility model are: improving valve seal reliability, simplifies processing technology, reduce the effect of cost.

Description

A kind of single shaft Kong Xuan opens check-valves

Technical field

The utility model relates to a kind of valves more particularly to a kind of single shaft Kong Xuan to open check-valves.

Background technique

Check-valves is a kind of check valve, and opening and closing element is voluntarily opened or closed by media flow and strength when work, belong to from Dynamic valve class, is mainly used on the pipeline of medium one-way flow, and main function is to prevent medium from flowing backwards, prevent from pumping and its driving electricity Fluid media (medium) releases in machine reversion and container.It is one of check valve that check-valves is opened in rotation, as shown in Figs. 1-2, main to wrap Include the valve body 3 equipped with fluid import and export, cover the valve deck 1 of mouth in the valve body, be arranged in valve body fluid inlet side valve seat 8, Flap 7a, valve shaft 4 and Rocker arm 5, the Rocker arm 5 are fixedly connected by slotted nut 6 and washer 9 with flap 7a, and valve shaft 4 is passed through and shaken The axle sleeve 12 of 5 upper end of arm setting, both ends are aided with the sealing of seal washer 11 by axis hole silk plug 10 and are hinged on valve body two sidewalls. Swing check valve since with body, a small amount of light, flaps are closed quickly for it, water hammer pressure is small, fluid resistance is small, it is sensitive, make With service life length, high reliability, it is widely used in the multiple fields such as chemical industry, metallurgy, pharmacy.

But existing rotation opens in its structure of check-valves that there are still defects, is mainly reflected in: double on valve body for fixed valve shaft 4 Axis hole has been opened in side, and valve shaft both ends are sealed installation by axis hole silk plug.Using practice proves that valve body bilateral aperture is installed Valve shaft not only makes valve processing technology complicated, increases difficulty of processing, and increase leakage point, drops the sealing reliability of product It is low.Therefore, valve shaft mounting structure how is improved, valve seal performance is improved, simplifies processing technology, becomes asking for industry concern Topic.

Utility model content

The main purpose of the utility model is that in view of the above-mentioned problems, being carried out on the basis of check valve structure is opened in existing rotation It improves, a kind of single shaft Kong Xuan is provided to open check-valves, improve valve seal reliability to reach, simplify processing technology, reduce The effect of cost.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of single shaft Kong Xuan opens check-valves, mainly includes the valve body equipped with fluid import and export, covers mouth in the valve body Valve deck, is arranged in valve seat, flap, valve shaft and the rocker arm of valve body fluid inlet side, and the rocker arm is fixed by fastener and flap Connection, its both ends of axle sleeve sealing that valve shaft passes through the setting of rocker arm upper end are hinged on valve body two sidewalls；It is characterized in that, the valve Axis one end is hinged in the axis hole in valve body one side wall by the sealing of axis hole silk plug, and the valve shaft other end is hinged on by axis hole axle sleeve In the axis blind hole that another side wall of valve body opens up.

The flap is complete encapsulated flap.

The beneficial effects of the utility model are: since the Double-shaft-and-hole used in the prior art is kept to uniaxial hole, another It is a close encapsulation structure that axis hole, which is converted into axis blind hole, without silk plug, seal washer, without processing hole screw thread, only Therefore an axis hole axle sleeve, which need to be arranged, reduces leakage point, improve the sealing reliability of valve；Simplify processing work Skill, processing efficiency improve；Reduce amount of parts, reduces cost.In addition, the flap is complete encapsulated flap, can be used as Anti-corrosion face, and may be used as sealing surface use, equally improve the sealing reliability of valve.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that check-valves is opened in rotation in the prior art；

The top view of Fig. 2 Fig. 1；

Fig. 3 is the structural schematic diagram that single shaft Kong Xuan provided by the utility model opens check-valves；

Fig. 4 is the top view of Fig. 3.

In figure: 1 valve deck, mouth sealing ring in 2,3 valve bodies, 4 valve shafts, 5 rocker arms, 6 slotted nuts, 7a-7b flap, 8 valve seats, 9 Washer, 10 axis hole silk plugs, 11 seal washers, 12 axle sleeves, 13 axis hole axle sleeves, 14 axis blind holes.

The utility model is described in detail below in conjunction with drawings and examples.

Specific embodiment

Fig. 3-4 shows a kind of single shaft Kong Xuan and opens check-valves, mainly includes the valve body 3 equipped with fluid import and export, described in capping Valve seat 8, flap 7b, valve shaft 4 and the Rocker arm 5 of valve body fluid inlet side is arranged in the valve deck 1 of mouth in valve body；The Rocker arm 5 passes through Fastener is fixedly connected with flap 7b, and in this example, fastener uses slotted nut 6 and washer 9；Valve shaft 4 passes through Rocker arm 5 upper end The axle sleeve 12 of setting, 2 axle sleeves 12 are provided in this example, and the sealing of valve shaft both ends is hinged on 3 two sidewalls of valve body.

The utility model is characterized in that described 4 one end of valve shaft is aided with the sealing hinge of seal washer 11 by axis hole silk plug 10 It connects in the axis hole in valve body one side wall, to be hinged on the axis that another side wall of valve body opens up blind by axis hole axle sleeve 13 for the valve shaft other end In hole 14.

As can be seen that it is blind that another axis hole is converted into axis since the Double-shaft-and-hole used in the prior art is kept to uniaxial hole Hole is a close encapsulation structure, and an axis hole need to only be arranged without processing hole screw thread without silk plug, seal washer Therefore axle sleeve 13 reduces leakage point, improve sealing reliability；Processing technology is simplified, processing efficiency improves；Subtract Lack amount of parts, reduces cost.In addition, the flap 7b is complete encapsulated flap, and the metal flap in opposite Fig. 1, valve One layer of rubber of valve surface sulfide, flap skeleton use carbon steel shape extrusion, and rubber layer after vulcanization can be used as anti-corrosion face, and can be with It is used instead of sealing surface, improves the sealing reliability of valve.

The above is only the preferred embodiment of the utility model, not to the shaped materials of the utility model and Structure makes any form of restriction.It is made by the above technical examples according to the technical essence of the present invention any simple Modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention.

Claims (2)

1. a kind of single shaft Kong Xuan opens check-valves, mainly includes the valve body equipped with fluid import and export, cover the valve of mouth in the valve body Lid, is arranged in valve seat, flap, valve shaft and the rocker arm of valve body fluid inlet side, and the rocker arm connects by the way that fastener and flap are fixed It connects, its both ends of axle sleeve sealing that valve shaft passes through the setting of rocker arm upper end is hinged on valve body two sidewalls；It is characterized in that, the valve shaft One end is hinged in the axis hole in valve body one side wall by the sealing of axis hole silk plug, and the valve shaft other end is hinged on valve by axis hole axle sleeve In the axis blind hole that another side wall of body opens up.

2. a kind of single shaft Kong Xuan according to claim 1 opens check-valves, which is characterized in that the flap is complete encapsulated valve Valve.