CN109404577A

CN109404577A - A kind of one-way valve structures

Info

Publication number: CN109404577A
Application number: CN201811582500.5A
Authority: CN
Inventors: 赵军; 张金伟; 胡胜龙; 张�林; 唐俊; 王艳
Original assignee: Mianyang Fulin Precision Machinery Co Ltd
Current assignee: Mianyang Fulin Precision Machinery Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2019-03-01

Abstract

The present invention provides a kind of one-way valve structures, including valve seat (1), elastic valve plate (2), the valve seat (1) is hollow cavity structure, it is opened up on valve seat (1) valve import (5), described elastic valve plate (2) one end is fixedly connected in valve seat (1) hollow cavity, the other end seals up valve import (5) in its natural state；When the Fluid pressure from valve import (5) is more than elastic valve plate (2) setting cracking pressure, releasing in sealing contact between the elastic valve plate (2) and valve import (5), check valve opening.Compared with traditional one-way valve structures, the present invention can cancel the components such as spring, steel ball, reduce amount of parts, keep one-way valve structures simpler, implementation cost is lower；And the contact area between elastic valve plate and fluid is bigger, is conducive to the reliability for improving one-way flow control of the check valve to fluid, improves the control precision of check valve.

Description

A kind of one-way valve structures

Technical field

The present invention relates to one-way valve structures design fields, more particularly, to a kind of list for being applied to variable valve timing system To valve arrangement.

Background technique

Camshaft phase inversion device in variable valve timing system controls the effect of its phase modulation by hydraulic oil, for hydraulic oil The utilization of different modes decides the phase modulation speed of camshaft phase inversion device.

Check valve common in the art is usually that spring and the mutually matched structure of steel ball is used to design, and passes through spring The one-way flow of control steel ball resetted to realize fluid.In this one-way valve structures, not only components are more, lead to check valve Structure is complicated, and implementation cost is higher, and check valve own vol is larger, it is also desirable to occupy more installation space；In addition, single Steel ball into valve is prone to wear in long-term reciprocating motion, so cause check valve to the one-way flow of fluid control can It is reduced by degree, affects the control precision of check valve.

Summary of the invention

The technical problem to be solved by the present invention is in view of the problems of the existing technology, providing a kind of one-way valve structures, no Only structure is simple, and controls the one-way flow of fluid reliable.

The technical problem to be solved in the present invention is realized using following technical scheme: a kind of one-way valve structures, including valve seat, Elastic valve plate, the valve seat are hollow cavity structure, valve import are opened up on valve seat, described elastic valve plate one end is fixedly connected In valve seat hollow cavity, the other end seal up valve import in its natural state；When the Fluid pressure from valve import is more than bullet Property valve block setting cracking pressure when, the releasing in sealing contact between the elastic valve plate and valve import, check valve open.

Preferably, retention bead is set on the valve seat.

Preferably, several are arranged in the retention bead, several described retention beads are asymmetric on valve seat Structure setting.

Preferably, be fixedly connected with valve block baffle on the valve seat, the valve block baffle limitation elastic valve plate relative to The aperture of valve import.

Preferably, countersunk head slot is opened up on the valve seat, the countersunk head slot covers valve import.

Preferably, the valve seat is to be fixedly connected integrally by valve shell with valve base.

It preferably, is integral by injection molding manner consolidated combination between the valve shell and valve base.

Preferably, the elastic valve plate is to be fixedly connected integrally by shielding plate with cantilever one end of L-shaped structure, described The cantilever other end is fixedly connected with valve seat, and the cantilever makes shielding plate elastic packing live valve import in its natural state.

Preferably, the shielding plate is ellipsoidal structure plate.

Preferably, the valve import is ellipsoidal structure through-hole.

Compared with prior art, the beneficial effects of the present invention are: forming bullet by the valve import on elastic valve plate and valve seat Property contact sealing structure, and when the Fluid pressure of valve import is more than elastic valve plate setting cracking pressure, elastic valve plate and valve into Releasing in sealing contact between mouthful, the one-way flow of fluid is realized with this.Therefore, compared with traditional one-way valve structures, this hair It is bright to cancel the components such as spring, steel ball, reduce amount of parts, keeps one-way valve structures simpler, implementation cost is lower； Also, the contact area between elastic valve plate and fluid is bigger, is conducive to improve one-way flow control of the check valve to fluid Reliability improves the control precision of check valve.

Detailed description of the invention

Fig. 1 is a kind of three-dimensional structural map of one-way valve structures of the present invention.

Fig. 2 is a kind of main view of one-way valve structures of the present invention.

Fig. 3 is a kind of side view of one-way valve structures of the present invention.

Fig. 4 is a kind of cross-sectional view of one-way valve structures of the present invention.

Component token name claims in figure: 1- valve seat, 1a- valve shell, 1b- valve base, 2- elastic valve plate, 2a- shielding plate, 2b- Cantilever, 3- retention bead, 4- valve block baffle, 5- valve import, 6- countersunk head slot.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not For limiting the present invention.

One-way valve structures as shown in Figure 1, Figure 2, Figure 3, Figure 4, including valve seat 1, elastic valve plate 2, during the valve seat 1 is Cavity body structure, opens up valve import 5 on valve seat 1, and one end of the elastic valve plate 2 is fixedly connected on the hollow cavity of valve seat 1 The interior, other end seals up valve import 5 in its natural state；When the Fluid pressure from valve import 5 is more than the setting of elastic valve plate 2 When cracking pressure, releasing in sealing contact between the elastic valve plate 2 and valve import 5, check valve is opened；Otherwise, the elasticity State in sealing contact, closed check valve are kept between valve block 2 and valve import 5.

Elastic valve plate 2 is excessively opening under the effect of the Fluid pressure of valve import 5 relative to valve import 5 in order to prevent, The action sensitivity for guaranteeing elastic valve plate 2, valve block baffle 4 can be fixedly connected on valve seat 1, can be limited by valve block baffle 4 Aperture of the elastic valve plate 2 processed relative to valve import 5, prevents valve block baffle 4 from leading to its permanent deformation, Jin Erzao because aperture is excessive At the damage of check valve.

It is fixedly connected integrally by valve shell 1a with valve base 1b as shown in figure 4, the valve seat 1 can be.It is therein Valve shell 1a can be moulding, and valve base 1b can be sheet metal, to lead between valve shell 1a and valve base 1b It crosses that injection molding manner consolidated combination is integral, not only saves the production cost of check valve, but also facilitate the installation of check valve.

Connected as shown in Fig. 2, the elastic valve plate 2 can be by one end cantilever 2b of shielding plate 2a and L-shaped structure is fixed It is connected into one, the other end of the cantilever 2b is fixedly connected with valve seat 1, so that elastic valve plate 2 has better elastic property, into And improve the control sensitivity of check valve.The cantilever 2b enables shielding plate 2a elastic packing live valve in its natural state Import 5, to realize the closing of check valve.The valve import 5 preferably uses ellipsoidal structure through-hole, to increase as wide as possible Add the inlet flow rate of check valve, reduces throttling.Correspondingly, the shielding plate 2a also uses the thin-walled of ellipsoidal structure Plate makes shielding plate 2a elasticity cover valve import 5, while having certain sealing reliability.

Valve import 5 on check valve anti-loaded direction in check valve installation exercise in order to prevent can be arranged on valve seat 1 Retention bead 3.The retention bead 3 can be set several and preferably be arranged on valve seat 1 in dissymmetrical structure, with Better ensure that the rotation mistake proofing and overturning mistake proofing when check valve assembly.Countersunk head slot 6 can also be opened up on valve seat 1, it is described Countersunk head slot 6 covers valve import 5, as shown in Figure 3, Figure 4, by the way that countersunk head slot 6 is arranged, can effectively reduce into valve import 5 Fluid resistance increases the inlet flow rate of check valve, is conducive to the control sensitivity for improving check valve.

The check valve designed using the above structure, by forming elasticity between the valve import 5 on elastic valve plate 2 and valve seat 1 Sealing structure is contacted, and when the Fluid pressure of valve import 5 is more than that elastic valve plate 2 sets cracking pressure, the elastic valve plate 2 State in sealing contact between valve import 5 is released, to realize the one-way flow of fluid.With traditional one-way valve structures It compares, due to eliminating the components such as spring, steel ball, the amount of parts of check valve is correspondingly reduced, check valve is made Structure it is simpler, more compact, can not only save the installation occupied space of check valve, but also implementation cost is also lower；In addition, Since the contact area between elastic valve plate 2 and fluid is bigger, this is conducive to the one-way flow control for improving check valve to fluid Reliability so that the control precision of check valve is effectively promoted.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention Within the scope of shield.

Claims

1. A one-way valve structure, characterized in that it comprises a valve seat (1) and an elastic valve plate (2), the valve seat (1) is a hollow cavity structure, and a valve is opened on the valve seat (1) Inlet (5), one end of the elastic valve plate (2) is fixedly connected in the hollow cavity of the valve seat (1), and the other end seals the valve inlet (5) in a natural state; when the fluid pressure from the valve inlet (5) When the opening pressure set by the elastic valve sheet (2) is exceeded, the sealing contact between the elastic valve sheet (2) and the valve inlet (5) is released, and the one-way valve is opened.

2 . The one-way valve structure according to claim 1 , wherein a limit protrusion ( 3 ) is arranged on the valve seat ( 1 ). 3 .

3. The one-way valve structure according to claim 2, characterized in that: a plurality of said limit protrusions (3) are provided, and said plurality of limit protrusions (3) are located on the valve seat (3). 1) The above is set for asymmetric structure.

4. A one-way valve structure according to claim 1, characterized in that: the valve seat (1) is fixedly connected to the valve plate baffle (4), and the valve plate baffle (4) restricts The opening of the elastic valve plate (2) relative to the valve inlet (5).

5. A one-way valve structure according to claim 1, characterized in that: a countersunk groove (6) is provided on the valve seat (1), and the countersunk groove (6) covers the valve inlet ( 5).

6. A one-way valve structure according to any one of claims 1-5, characterized in that: the valve seat (1) is fixedly connected to the valve housing (1a) and the valve seat (1b) into one body .

7 . The one-way valve structure according to claim 6 , wherein the valve housing ( 1 a ) and the valve base ( 1 b ) are combined into one body by means of injection molding. 8 .

8. A one-way valve structure according to any one of claims 1-5, characterized in that: the elastic valve sheet (2) is composed of a shielding sheet (2a) and an L-shaped cantilever (2b) One end of the cantilever (2b) is fixedly connected into one body, and the other end of the cantilever (2b) is fixedly connected to the valve seat (1).

9 . The one-way valve structure according to claim 8 , wherein the shielding sheet ( 2 a ) is an elliptical structural plate. 10 .

10. A one-way valve structure according to any one of claims 1-5, characterized in that: the valve inlet (5) is an elliptical structure through hole.