CN201944349U

CN201944349U - Check valve

Info

Publication number: CN201944349U
Application number: CN2011200562509U
Authority: CN
Inventors: 张泽中
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-04
Filing date: 2011-03-04
Publication date: 2011-08-24
Anticipated expiration: 2021-03-04

Abstract

The utility model discloses a check valve, belonging to direction control parts in a fluid delivery system, which mainly solves the problems of gas or liquid backflow in pipelines. The structure of the check valve comprises a check valve body with openings communicated at the two ends and a middle bent part, wherein one side of an inner cavity at the middle bent part of the check valve body is provided with a spring; one end of the spring is fixed on the inner wall of the check valve bent part, the other end is connected with a guide plate; the guide plate is perpendicular to the axial line of the opening part of the check valve body. The bent part of the inner cavity in the check valve is provided with the spring connected with the guide plate, gas or liquid flows into the cavity from an inlet of the valve body, the spring force and the frication force are overcome under the action of pressure so as to stack the guide plate to the inner wall of the valve body, thus the check valve opening is opened and unblocked to let the fluid flow; when the inlet has no pressure, the guide plate is recovered to the valve opening position under the action of spring force, so the check valve is at a close state to prevent gas or liquid from flowing back.

Description

A kind of one-way valve

Technical field

The utility model relates to the direction controlling component in a kind of fluid delivery system, specifically a kind of one-way valve.

Background technique

One-way valve is used for controlling fluid as a kind of device in pipeline can only be along inlet flow, the device that the outlet medium but can't reflux is widely used in supplying water and the heat supply field, but traditional one-way valve structures complexity, processing, accuracy of manufacturing height, working life is short, the cost height, so in actual life, be subjected to all restrictions, and for drawing water in the family, inflatable tool, usually owing to one-way valve is not installed liquid or gas backstreaming problem appear, influence is used and is caused time waste simultaneously.

The model utility content

The purpose of this utility model is to provide a kind of one-way valve, and this one-way valve has simple in structure, and is easy to use, can prevent the gas or the liquid return that flow into.

The technical scheme in the invention for solving the technical problem is: a kind of one-way valve, its structure comprises the one-way valve body of both ends open conducting middle part bending, described one-way valve body is provided with a spring in bending place, middle part inner chamber one side, one end of described spring is fixed on the inwall of one-way valve bending place, the other end is connected with guide plate, described guide plate and one-way valve body openings place axis normal.

The beneficial effects of the utility model are: owing to be provided with the spring of a connection guide plate in one-way valve inner chamber bending place, gas or liquid enter from the valve body import, overcoming spring force and frictional force under pressure fits guide plate and valve interior wall, the one-way valve valve port is opened, unimpeded, fluid is passed through; When import did not have pressure, under the spring force effect, guide plate returned to the valve port position, makes one-way valve be in closed condition, can prevent gas or liquid return.

Description of drawings

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

Among the figure: 1 one-way valve body, 2 guide plates, 3 springs.

Embodiment

As shown in Figure 1.A kind of one-way valve, its structure comprises the one-way valve body 1 of both ends open conducting middle part bending, described one-way valve body 1 is provided with a spring 3 in bending place, middle part inner chamber one side, one end of described spring 3 is fixed on the inwall of one-way valve body 1 bending place, the other end is connected with guide plate 2, described guide plate 2 and one-way valve body 1 opening axis normal.

During use, gas or liquid enter from the import of one-way valve body 1, overcome spring force and frictional force under pressure the inwall that moves behind the guide plate 2 with one-way valve body 1 is fitted, and one-way valve body valve port is opened, and is unimpeded, and fluid is passed through; When import did not have pressure, under the spring force effect, guide plate 2 reach returned to the valve port position, makes one-way valve be in closed condition, can prevent from the gas or the liquid return that flow through to can save energy environmental protection, and is safe in utilization, convenient.

Claims

1. one-way valve, the one-way valve body that comprises the bending of both ends open conducting middle part, it is characterized in that, described one-way valve body is provided with a spring in bending place, middle part inner chamber one side, one end of described spring is fixed on the inwall of one-way valve bending place, the other end is connected with guide plate, described guide plate and one-way valve body openings place axis normal.