CN212377370U - One-way valve with two-section opening function - Google Patents

Abstract

The utility model provides a check valve with two-section opening function, which comprises a valve body, wherein an oil inlet is arranged on the left end surface of the valve body, a valve cavity communicated with the oil inlet is arranged in the valve body, an oil outlet communicated with the valve cavity is arranged on the valve body, a main valve core and a main spring are arranged in the valve cavity, and the main valve core is slidably arranged in the valve cavity; the right-hand member face of main valve core is provided with the valve opening, the bottom of valve opening is provided with supplementary hydraulic fluid port, supplementary hydraulic fluid port intercommunication oil inlet and valve opening, valve opening and oil-out intercommunication, be provided with supplementary case and auxiliary spring in the valve opening, through set up supplementary case on main valve core, make the check valve experience the process that the main valve core was opened earlier to the supplementary case when forward was opened, avoided main valve core to open and caused the impact to the pipeline in the twinkling of an eye, hydraulic system well liquid stream has been kept steady, the control sensitivity of supplementary case is higher simultaneously, the reaction rate of check valve has further been improved.

Description

One-way valve with two-section opening function

Technical Field

The utility model relates to a hydraulic component especially relates to a check valve with two sections function of opening.

Background

In a hydraulic system, a hydraulic valve is used for controlling the flow direction of fluid, the hydraulic valve only allows the fluid to flow in from an oil inlet and then flow out from an oil outlet, and the fluid cannot flow in the reverse direction. In the prior art, specification selection of a one-way valve is closely related to selection of fluid flow, the one-way valve with high flow rate is required in a hydraulic system with high flow rate, the existing one-way valve is usually a one-way valve core to control the on-off of a pipeline, and the fluid in the pipeline is usually impacted due to the excessive instantaneous flow rate when the one-way valve with high flow rate is usually opened, so that the hydraulic system is unstable; meanwhile, the large-flow one-way valve core is large, and can be opened only by establishing certain opening pressure at the oil inlet of the piece when the valve core is opened in the forward direction, so that certain hysteresis is realized, and the sensitivity is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the too big fluid impact in the pipeline that easily causes of current check valve flow when opening in the twinkling of an eye, the sensitivity of opening simultaneously is lower, the utility model provides a check valve with two sections functions of opening solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a check valve with two-section opening function comprises a valve body, wherein an oil inlet is formed in the left end face of the valve body, a valve cavity communicated with the oil inlet is formed in the valve body, an oil outlet communicated with the valve cavity is formed in the valve body, a main valve element and a main spring are arranged in the valve cavity, the main valve element is slidably mounted in the valve cavity, the main spring is mounted at the right end of the main valve element, and the main spring pushes the main valve element leftwards and enables the main valve element to be attached to an inner hole of the oil outlet in a sealing mode; the oil outlet of the main valve core is communicated with the oil inlet, the oil outlet of the main valve core is communicated with the oil outlet, the valve hole is internally provided with an auxiliary valve core and an auxiliary spring, and the auxiliary spring pushes the auxiliary valve core leftwards and enables the auxiliary valve core to be attached to the inner hole opening of the auxiliary oil port in a sealing mode.

Further: the left part of the main valve core is provided with a sealing outer cone, the right part of the main valve core is provided with a spring guide part, the sealing outer cone can be attached to the inner hole opening of the oil outlet leftwards in a sealing mode, and the main spring is sleeved on the periphery of the spring guide part.

Further: the auxiliary valve core is a steel ball, and the auxiliary spring can push the steel ball leftwards and enable the steel ball to be attached to an inner hole of the auxiliary oil port in a sealing mode.

The beneficial effects of the utility model are that, the utility model relates to a check valve with two sections functions of opening is through setting up auxiliary valve core on main valve core for the process of opening after main valve core is opened earlier to the experience auxiliary valve core when forward is opened, has avoided main valve core to open and has caused the impact to the pipeline in the twinkling of an eye, and it is steady to have kept the liquid stream among the hydraulic system, and auxiliary valve core's control sensitivity is higher simultaneously, has further improved the reaction rate of check valve.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a check valve with two-stage opening function according to the present invention;

FIG. 2 is a schematic of the main spool construction.

In the figure, the valve comprises a valve body 1, a valve body 2, an oil inlet 3, a valve cavity 4, an oil outlet 5, a main spring 6, a main valve core 7, a valve hole 8, an auxiliary oil port 9, an auxiliary valve core 10, an auxiliary spring 11, a sealing outer cone 12 and a spring guide part.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1 and fig. 2, the utility model provides a check valve with two-section opening function, including valve body 1, be provided with oil inlet 2 on the left end face of valve body 1, set up in valve body 1 with the valve pocket 3 of oil inlet 2 intercommunication, be provided with on the valve body 1 with the oil-out 4 of valve pocket 3 intercommunication, be provided with main valve core 6 and main spring 5 in the valve pocket 3, main valve core 6 is slidably mounted in the valve pocket 3, main spring 5 is installed at the right-hand member of main valve core 6, main spring 5 pushes away main valve core 6 to the left and makes main valve core 6 seal the laminating at the hole mouth department of oil-out 4; the oil outlet valve is characterized in that a valve hole 7 is formed in the right end face of the main valve element 6, an auxiliary oil port 8 is formed in the bottom of the valve hole 7, the auxiliary oil port 8 is communicated with the oil inlet 2 and the valve hole 7, the valve hole 7 is communicated with the oil outlet 4, an auxiliary valve element 9 and an auxiliary spring 10 are arranged in the valve hole 7, and the auxiliary spring 10 pushes the auxiliary valve element 9 leftwards and enables the auxiliary valve element 9 to be attached to an inner hole opening of the auxiliary oil port 8 in a sealing mode.

When no hydraulic oil flows, the main spring 5 pushes the main valve core 6 to the left, the main valve core 6 cuts off a passage between the oil inlet 2 and the oil outlet 4, the auxiliary spring 10 pushes the auxiliary valve core 9 to the left, and the auxiliary valve core 9 cuts off a passage between the auxiliary oil port 8 and the valve hole 7.

When hydraulic oil flows into the oil inlet 2, pressure is built on the left end faces of the main valve element 6 and the auxiliary valve element 9 by hydraulic oil, the auxiliary valve element 9 can be pushed to move rightwards to open a passage between the auxiliary oil port 8 and the valve hole 7 by overcoming the action of an auxiliary spring 10, the valve hole 7 is communicated with the oil outlet 4, the hydraulic oil can reach the valve hole 7 to flow out from the oil outlet 4 through the auxiliary oil port 8 at the first time, when the pressure of the oil inlet 2 is increased along with the increase of the hydraulic oil flowing into the oil inlet 2, the main valve element 6 is pushed to move rightwards by overcoming the action of a main spring 5 to develop the passage between the oil inlet 2 and the oil outlet 4, the passage flowing into the oil outlet 4.

When hydraulic oil flows into the oil outlet 4, pressure is built on the right end faces of the main valve core 6 and the auxiliary valve core 9 by the hydraulic oil, the pressure direction is leftward and is the same as the acting force of the main spring 5 and the auxiliary spring 10, the main valve core 6 and the auxiliary valve core 9 are kept in a sealing and attaching state, and a passage between the oil inlet 2 and the oil outlet 4 is kept in a cutting state, so that the function of one-way conduction is realized.

The two-stage opening mode can open the auxiliary valve core 9 to realize the first-stage conduction at the first time when hydraulic oil flows in the oil inlet 2, and can gradually open the main valve core 6 to realize the second-stage large-flow conduction when the oil in the oil inlet 2 continuously flows, so that the liquid flow has small impact on a pipeline, and the two-stage opening mode has the advantages of sensitive forward opening of the one-way valve, rapid opening and rapid improvement of forward through-flow capacity.

The left part of main valve core 6 is provided with sealed outer cone 11, and the right part is provided with spring guide portion 12, sealed outer cone 11 can be left sealed laminating in the hole mouth department of oil-out 4, main spring 5 cover is established the periphery of spring guide portion 12. The auxiliary valve core 9 is a steel ball, and the auxiliary spring 10 can push the steel ball leftwards and make the steel ball fit with the inner hole of the auxiliary oil port 8 in a sealing manner. The main valve core 6 adopts a conical sealing outer cone 11 sealing mode, the auxiliary valve core 9 adopts a spherical steel ball sealing mode, the advantages of high sealing performance of the main valve core 6 and high opening speed of the auxiliary valve core 9 are considered, the opening pressure of the one-way valve is reduced, meanwhile, the closing pressure is ensured, the leakage amount of the one-way valve is greatly reduced, and the performance of the one-way valve is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (3)

1. The utility model provides a check valve with two sections function of opening, includes valve body (1), be provided with oil inlet (2) on the left end face of valve body (1), seted up in valve body (1) with valve pocket (3) of oil inlet (2) intercommunication, be provided with on valve body (1) with oil-out (4) of valve pocket (3) intercommunication, its characterized in that: a main valve core (6) and a main spring (5) are arranged in the valve cavity (3), the main valve core (6) is slidably mounted in the valve cavity (3), the main spring (5) is mounted at the right end of the main valve core (6), and the main spring (5) pushes the main valve core (6) leftwards and enables the main valve core (6) to be attached to an inner hole of the oil outlet (4) in a sealing mode; the hydraulic control valve is characterized in that a valve hole (7) is formed in the right end face of the main valve element (6), an auxiliary oil port (8) is formed in the bottom of the valve hole (7), the auxiliary oil port (8) is communicated with the oil inlet (2) and the valve hole (7), the valve hole (7) is communicated with the oil outlet (4), an auxiliary valve element (9) and an auxiliary spring (10) are arranged in the valve hole (7), and the auxiliary spring (10) pushes the auxiliary valve element (9) leftwards and enables the auxiliary valve element (9) to be attached to the inner hole opening of the auxiliary oil port (8) in a sealing mode.

2. A check valve having a two-stage opening function as claimed in claim 1, wherein: the left part of main valve core (6) is provided with sealed outer cone (11), and the right part is provided with spring guide portion (12), sealed outer cone (11) can be left sealed laminating be in the hole mouth department of oil-out (4), main spring (5) cover is established the periphery of spring guide portion (12).

3. A check valve having a two-stage opening function as claimed in claim 2, wherein: the auxiliary valve core (9) is a steel ball, and the auxiliary spring (10) can push the steel ball leftwards and enable the steel ball to be attached to an inner hole of the auxiliary oil port (8) in a sealing mode.

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