CN203335945U

CN203335945U - One-way valve

Info

Publication number: CN203335945U
Application number: CN2013202630092U
Authority: CN
Inventors: 孟繁茂
Original assignee: Suzhou Cuizhi New Technology Development Co Ltd
Current assignee: Suzhou Cuizhi New Technology Development Co Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-12-11
Anticipated expiration: 2023-05-15

Abstract

The utility model discloses a one-way valve which is composed of a valve body, a valve core, an adjusting knob, and a spring. The one-way valve is characterized in that the valve body is provided with an inlet, an outlet, and a load unloading opening which are respectively communicated with the valve cavity, the valve core is arranged in the valve cavity, the tail portion of the valve core is connected with the spring, the other end of the spring is connected with the adjusting knob, and the adjusting knob is connected with the valve body. The one-way valve is adjustable in pressure in opening, has an overflow function, and effectively controls the pressure of pipelines.

Description

A kind of one-way valve

Technical field

The utility model relates to a kind of one-way valve, especially can regulate cracking pressure and the one-way valve that prevents impacting with high pressure.

Background technique

As everyone knows, one-way valve be fluid can only one direction flow and position control valve that can not reverse flow.Its working principle is that fluid enters from import, overcomes spring force and frictional force the one-way valve valve port is opened, and fluid flow to outlet from import; When import during without fluid, under spring force and outlet fluid pressure action; Valve port is in closed condition, makes from being exported to inlet ductwork obstructedly, and one-way valve is applied to not allow the occasion of reverse fluid flow.

Such as Chinese patent: one-way valve (200480007023.X), a kind of one-way valve is disclosed, with on the initial position of valve housing to the pre-tensioned valve seat piston of valve seat, this valve seat is by plastic injection-moulded method manufacture.

But above-mentioned one-way valve without regulating the cracking pressure function, can't provide for the equipment of next stage the function of pressure protect in the superpressure situation.

The model utility content

Can't regulate the cracking pressure function function of pressure protect is provided for the equipment of next stage simultaneously in order to solve existing one-way valve, the utility model provides a kind of one-way valve.

The utility model solves the technological scheme that its technical problem adopts: a kind of one-way valve, its composition comprises: valve body, spool, adjusting knob, spring, valve body is provided with an import, an outlet, a unloading port and being communicated with valve pocket respectively, be provided with spool in valve pocket, the spool afterbody is connected with spring, the other end of spring is connected with adjusting knob, and adjusting knob is connected with valve body; Described spool head diameter is less than valve diameter, and the spool middle part is provided with an annular groove, and valve core inside is provided with pipeline, and pipe ends is connected with annular groove with the spool head respectively; Described spool is provided with the non-return seal ring between annular groove and spool head, and annular groove and spool afterbody are provided with exclusion seal circle and the anti-seal of divulging a secret successively; The Placement of described adjusting knob and valve body is for being threaded.

The beneficial effects of the utility model are: the one-way valve cracking pressure can be in harmonious proportion the overflow effect, effectively controls pipeline pressure.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is that a kind of one-way valve of the utility model is overlooked cross-sectional schematic.

Fig. 2 is the left schematic diagram of a kind of one-way valve valve body of the utility model.

Fig. 3 is a kind of inner elements of check valve schematic diagram of the utility model.

1. spools in the drawings, 2. import, 3. valve body, 4. connecting pipe, 5. non-return seal ring, 6. annular groove, 7. exclusion seal circle, the 8. anti-seal of divulging a secret, 9. adjusting knob, 10. spring standing groove, 11. springs, 12. unloading port, 13. circular pit, 14. outlets, 15. valve pockets, 16. fixed holes.

Embodiment

Below in conjunction with an embodiment of accompanying drawing narration, the utility model is described in further detail.

In Fig. 1-Fig. 3, valve body 3 is provided with an import 2, an outlet 14, a unloading port 12 and all being communicated with valve pocket 15, in valve pocket 15, being combined with can be along the axially movable spool 1 of valve pocket 15, spool 1 head is spherical and can blocks import 2 fully, spool 1 head diameter is less than spool 1 diameter, spool 1 middle part is provided with annular groove 6, spool 1 inside be provided with connecting pipe 4 and connecting pipe 4 two ends respectively with spool 1 head, annular groove 6 connects, be provided with non-return seal ring 5 between annular groove 6 and spool 1 head, when one-way valve is in the closed position, spool 1 is provided with exclusion seal circle 7 in exporting 14 with unloading port 12 separate space position outer surfaces, spool 1 afterbody is provided with the anti-seal 8 of divulging a secret, spool 1 tail end is provided with a circular pit 13, circular pit 13 bottoms are connected with spring 11 ends, spring 11 the other ends are established a threaded end with adjusting knob 9 surfaces and are connected, adjusting knob 9 is connected with valve pocket 15 by screw thread, adjusting knob 9 exposes valve pocket 15 1 end surfaces without screw thread, adjusting knob 9 is established threaded end face and is provided with spring standing groove 10, bottom land is connected with the other end of spring 11, valve body 3 bottoms are provided with four fixed holes 16.

During use; fluid flows into from import 2; effect lower valve core 1 at hydrodynamic pressure moves to adjusting knob 9 directions; spool 1 apical head and import 2 disengage; fluid flows into valve pocket 15 and enters outlet 14 rear outflow one-way valves by pipeline 4; when overpressure; pipeline 4 is connected with unloading port 12; fluid flows out one-way valve by unloading port 12; the utility model can, according to use occasion different adjustment one-way valve cracking pressure, when overpressure, distribute service pipe by fluid simultaneously; protect follow-up pipeline, prevent the under-voltage or overvoltage of pipeline.

Claims

1. an one-way valve, its composition comprises: valve body, spool, adjusting knob, spring, it is characterized in that: valve body is provided with an import, an outlet, a unloading port and being communicated with valve pocket respectively, be provided with spool in valve pocket, the spool afterbody is connected with spring, the other end of spring is connected with adjusting knob, and adjusting knob is connected with valve body.

2. a kind of one-way valve according to claim 1, it is characterized in that: described spool head diameter is less than valve diameter, and the spool middle part is provided with an annular groove, and valve core inside is provided with pipeline, and pipe ends is connected with annular groove with the spool head respectively.

3. according to claim 1 or a kind of one-way valve claimed in claim 2, it is characterized in that: described spool is provided with the non-return seal ring between annular groove and spool head, and annular groove and spool afterbody are provided with exclusion seal circle and the anti-seal of divulging a secret successively.

4. a kind of one-way valve according to claim 1 is characterized in that: the Placement of described adjusting knob and valve body is for being threaded.