CN203214975U - Check valve - Google Patents

Abstract

The utility model relates to a check valve. The check valve comprises a valve body, wherein a water inlet at the lower end of the valve body is a tapered hole, a left valve clack and a right valve clack are arranged inside a valve cavity at the upper end of the tapered hole and are rotatably connected with each other, a spring is arranged between upper end faces of the left valve clack and the right valve clack, and when the left valve clack and the right valve clack fall, the left valve clack and the right valve clack abut against end faces of the valve body on two sides of the upper end of the tapered hole. The left valve clack and the right valve clack are connected together through the spring and are located inside the valve cavity, during water feeding, the tapered hole is communicated with the valve cavity, and when water feeding is finished, under the action of water pressure, the left valve clack and the right valve clack are pressed against the end faces of the valve body on the two sides of the upper end of the tapered hole respectively to separate the tapered hole from the valve cavity to prevent water backflow.

Description

A kind of safety check

Technical field

The utility model relates to a kind of safety check.

Background technique

Traditional check valve structure complexity, the non-return effect is undesirable, and manufacture cost is higher.

The model utility content

The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of safety check is provided, guarantee the non-return performance of safety check.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of safety check, comprise valve body, the lower end water intake of described valve body is taper hole, be provided with left flap and right flap in the valve pocket of described taper hole upper end, described left flap rotates with right flap and is connected, be provided with spring between described left flap and right flap two upper-end surfaces, when left flap and right flap fell, the valve body end face of described left flap and right flap and both sides, taper hole upper end offseted.

Further, the valve body end face of both sides, described taper hole upper end is provided with seal ring.

The beneficial effects of the utility model are: left flap and right flap link together by spring, and be positioned at valve pocket, in the time of water inlet, taper hole communicates with valve pocket, after water inlet finished, water was under the effect of hydraulic pressure, and left flap and right flap are pressed in respectively on the valve body end face of both sides, taper hole upper end, taper hole and valve pocket are cut off, and anti-sealing refluxes.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is structural representation of the present utility model;

Wherein: 1, valve body, 2, seal ring, 3, left flap, 4, right flap.

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

As shown in Figure 1, a kind of safety check, comprise valve body 1, the lower end water intake of valve body 1 is taper hole, be provided with left flap 3 and right flap 4 in the valve pocket of taper hole upper end, left flap 3 rotates with right flap 4 and is connected, and left flap 3 and right flap are provided with spring between 4 liang of upper-end surfaces, when left flap 3 and right flap 4 fell, left flap 3 and right flap 4 offseted with valve body 1 end face of both sides, taper hole upper end.

Valve body 1 end face of both sides, taper hole upper end is provided with seal ring 2.

A left side flap 3 and right flap 4 link together by spring, and be positioned at valve pocket, in the time of water inlet, taper hole communicates with valve pocket, after water inlet finished, water was under the effect of hydraulic pressure, and left flap 3 and right flap 4 are pressed in respectively on valve body 1 end face of both sides, taper hole upper end, taper hole and valve pocket are cut off, and anti-sealing refluxes.

When left flap 3 and right flap 4 were pressed on valve body 1 end face of both sides, taper hole upper end, outside end face and the seal ring 2 of left flap 3 and right flap 4 offseted, and guarantee that taper hole and valve pocket cut off mutually, guarantee the non-return performance.

Be enlightenment with above-mentioned foundation desirable embodiment of the present utility model, by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims (2)

1. safety check, it is characterized in that: comprise valve body, the lower end water intake of described valve body is taper hole, be provided with left flap and right flap in the valve pocket of described taper hole upper end, described left flap rotates with right flap and is connected, be provided with spring between described left flap and right flap two upper-end surfaces, when left flap and right flap fell, the valve body end face of described left flap and right flap and both sides, taper hole upper end offseted.

2. a kind of safety check according to claim 1 is characterized in that: the valve body end face of both sides, described taper hole upper end is provided with seal ring.

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