CN110220018B

CN110220018B - One-way valve

Info

Publication number: CN110220018B
Application number: CN201910517889.3A
Authority: CN
Inventors: 吴茂国; 张远献; 白玉东; 周士杰
Original assignee: Cino Technology (shenzhen) Ltd
Current assignee: Cino Technology (shenzhen) Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2024-04-19
Anticipated expiration: 2039-06-14
Also published as: CN110220018A

Abstract

The embodiment of the invention discloses a one-way valve, which comprises a first shell, a second shell, balls, a compression spring and a spring seat, wherein the first shell and the second shell are mutually sealed and fixed to form a valve cavity of the one-way valve, the valve cavity comprises a cylindrical cavity positioned on the first shell and a semicircular cavity positioned on the second shell, the spherical shape of the balls is matched with that of the semicircular cavity, the compression spring is accommodated in the cylindrical cavity, one end of the compression spring is abutted against the balls, the other end of the compression spring is abutted against the spring seat, and the spring seat is fixed in a mounting hole of the first shell; the first shell is provided with a medium inflow channel, the axial direction of the medium inflow channel is tangential to the outer edge of one side of the ball, and the medium inflow channel extends into the cylindrical inner cavity and is staggered with the compression spring. In this way, the embodiment of the invention can adjust the opening pressure of the liquid outlet by adjusting the position of the spring seat in the housing from the outside.

Description

One-way valve

Technical Field

The embodiment of the invention relates to the technical field of valves, in particular to a one-way valve.

Background

The check valve, also called as a check valve or a check valve, has the function that fluid flows in from a specific water inlet end and flows out from a specific water outlet end, and the fluid cannot flow reversely. This feature of the one-way valve makes it widely used in the field of fluid control, often in piping systems, to prevent backflow or regurgitation of a medium (liquid, gas) flowing in the piping.

The spring type one-way valve pushes the valve core controlled by the spring against the pressure of the liquid, and after the pressure disappears, the valve core is pushed against the inlet again by the spring force, so that the liquid is sealed to flow backwards. When the opening pressure of the liquid outlet needs to be regulated, the opening pressure can be realized by regulating the rigidity or the compression amount of the spring, and in the existing one-way valve, the spring is positioned in the medium flow passage, no matter what way is adopted, the one-way valve needs to be detached from the pipeline first, so that the one-way valve is more complicated in practical application.

In view of this, there is a need for further improvements in existing one-way valves.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is to provide the one-way valve, wherein the opening pressure of the liquid outlet can be adjusted by adjusting the position of the spring seat in the shell from the outside.

In order to achieve the above purpose, the invention adopts a technical scheme that: a one-way valve is provided, comprising a first shell, a second shell, balls, a compression spring and a spring seat;

the first shell and the second shell are mutually sealed and fixed to form a valve inner cavity of the one-way valve, the valve inner cavity comprises a cylindrical inner cavity positioned on the first shell and a semicircular inner cavity positioned on the second shell, the spherical shape of the ball is matched with that of the semicircular inner cavity, the compression spring is accommodated in the cylindrical inner cavity, one end of the compression spring is abutted against the ball, the other end of the compression spring is abutted against the spring seat, and the spring seat is fixed in a mounting hole of the first shell;

The first shell is provided with a medium inflow channel, the second shell is provided with a medium outflow channel, the central line of the medium inflow channel and the central line of the medium outflow channel are not in the same straight line, and the axial direction of the medium inflow channel is tangential to the outer edge of one side of the ball; and

The media inflow passage extends into the cylindrical interior cavity offset from the compression spring.

Optionally, an external thread is arranged on the outer side surface of the spring seat, an internal thread is arranged in the mounting hole of the first shell, and the spring seat is fixedly connected with the first shell through threads.

Optionally, a force hole is formed in the bottom of the spring seat.

In an embodiment, the first shell is at the edge of the cylindrical inner cavity, and the second shell is at the edge of the semicircular inner cavity, and the flange-shaped flanges are provided with a plurality of positioning holes, and the first shell and the second shell are mutually sealed and fixed through fasteners penetrating through the positioning holes.

Optionally, an annular groove is formed on the flange-shaped flange of the first shell and/or the flange-shaped flange of the second shell, and the one-way valve further comprises an O-ring accommodated in the annular groove.

In an embodiment, the one-way valve further comprises a ball seat, the ball is received by the ball seat, a concave arc curved surface which is fit with the arc curved surface of the ball is arranged on the ball seat, and one end of the compression spring is abutted to the ball seat.

Optionally, the ball is made of ceramic, glass or stainless steel, and the ball is solid or hollow.

The embodiment of the invention has the beneficial effects that: different from the situation of the prior art, the one-way valve in the embodiment of the invention comprises a first shell, a second shell, a ball, a compression spring and a spring seat, wherein the first shell and the second shell are mutually sealed and fixed to form a valve cavity of the one-way valve, the valve cavity comprises a cylindrical cavity positioned on the first shell and a semicircular cavity positioned on the second shell, the spherical shape of the ball is matched with the semicircular cavity, the compression spring is accommodated in the cylindrical cavity, one end of the compression spring is abutted against the ball, the other end of the compression spring is abutted against the spring seat, and the spring seat is fixed in a mounting hole of the first shell; the first shell is provided with a medium inflow channel, the axial direction of the medium inflow channel is tangential to the outer edge of one side of the ball, the medium inflow channel extends into the cylindrical inner cavity and is staggered with the compression spring, the position of the spring seat in the first shell can be adjusted from the outside so as to change the length of the spring seat protruding into the inner cavity of the valve, and accordingly the opening pressure of the liquid outlet is adjusted without detaching the one-way valve from the pipeline.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a perspective view of a check valve according to an embodiment of the present invention;

FIG. 2 is an exploded view of the one-way valve of the present invention;

Fig. 3 is a cross-sectional view of the one-way valve of the present invention.

Detailed Description

In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the check valve according to the embodiment of the present invention includes a first housing 10, a second housing 20, a ball 30, a ball seat 40, a compression spring 50 and a spring seat 60, where the first housing 10 and the second housing 20 are sealed and fixed with each other to form a valve cavity of the check valve, and the ball 30, the ball seat 40 and the compression spring 50 are all accommodated in the valve cavity; the ball 30 is received by the ball seat 40, the ball seat 40 is provided with a concave arc surface which is jointed with the arc surface of the ball 30, one end of the compression spring 50 is abutted against the ball seat 40, the other end is abutted against the spring seat 60, and the spring seat 60 is fixed in the mounting hole of the first housing 10.

The first housing 10 is provided with a medium inflow channel 11, the second housing 20 is provided with a medium outflow channel 21, the medium inflow channel 11 and the medium outflow channel 21 are respectively communicated with the valve cavity, the center line of the medium inflow channel 11 and the center line of the medium outflow channel 21 are not on the same straight line, and the axial direction of the medium inflow channel 11 is tangential to one side outer edge 30 of the ball.

The valve cavity comprises a cylindrical cavity positioned on the first shell 10 and a semicircular cavity positioned on the second shell 20, the medium inflow channel 11 extends into the cylindrical cavity, and the ball seat 40 and the compression spring 50 are both accommodated in the cylindrical cavity and are staggered with the medium inflow channel 11; the spherical shape of the ball 30 is matched with the semicircular inner cavity on the second shell 20, when the liquid pressure in the cavity is lower than a set value, the ball 30 is tightly attached to the semicircular inner cavity on the second shell 20 under the thrust of the compression spring 50, and the medium outflow channel 21 is closed.

When liquid with a certain speed is injected into the valve cavity through the medium inflow channel 11, the fluid forms vortex in the valve cavity, the axial direction of the medium inflow channel 11 is tangential to the ball 30, the ball 30 rotates under the action of tangential force of the fluid, the ball 30 overcomes the resistance of the compression spring 50 and breaks away from the semicircular cavity on the second shell 20 along with the gradual increase of the fluid pressure in the valve cavity, and the liquid flows out through the medium outflow channel 21.

The ball 30 may be made of ceramic, glass, stainless steel, or the like, and the ball 30 may be solid or hollow.

It will be appreciated that in the case where the compression spring 50 is defined, the amount of compression of the compression spring 50 depends on the distance between the spring seat 60 and the ball seat 40, and in this embodiment, since the spring 50 is offset from the medium inflow passage 11, the position of the spring seat 60 in the first housing 10 can be adjusted from the outside to change the length of the spring seat 60 protruding into the valve cavity, thereby adjusting the opening pressure of the liquid outlet without removing the check valve from the pipe.

Under the condition that the adjustment requirement cannot be met by changing the length of the spring seat 60 protruding into the valve cavity, the spring seat 60 can be taken out of the first shell 10 first, the compression spring 50 is replaced, and the rigidity of the compression spring 50 is changed.

In one embodiment, the outer side surface of the spring seat 60 is provided with an external thread, and the mounting hole of the first housing 10 is provided with an internal thread (not shown in the figure), and the spring seat 60 is fixedly connected with the first housing 10 through threads. For example, when it is desired to increase the opening pressure of the liquid outlet, the spring seat 60 may be screwed further into the first housing 10.

Alternatively, the bottom of the spring seat 60 is provided with the force hole 61, for example, the force hole 61 may be hexagonal, cross-shaped, etc., and inserting a tool into the force hole 61 may screw the spring seat 60 into or out of the first housing 10 easily and quickly.

In the above embodiment, the first casing 10 is provided with the flange-shaped flange at the edge of the cylindrical inner cavity, and the second casing 20 is provided with the flange-shaped flange at the edge of the semicircular inner cavity, and the flange-shaped flange is provided with a plurality of positioning holes, through which the first casing 10 and the second casing 20 can be mutually sealed and fixed by using threaded fasteners such as screws and bolts.

Preferably, the flange-like flange of the first housing 10 and/or the flange-like flange of the second housing 20 is provided with an annular groove 12, and the annular groove 12 is used for accommodating an O-ring, so that the sealing performance between the first housing 10 and the second housing 20 is enhanced by arranging the O-ring between the first housing 10 and the second housing 20.

In the above embodiment, the ball 30 may be directly connected to one end of the compression spring 50 without providing the ball seat 40.

It should be noted that while the present invention has been illustrated in the drawings and described in connection with the preferred embodiments thereof, it is to be understood that the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but are to be construed as providing a full breadth of the disclosure. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present invention described in the specification; further, modifications and variations of the present invention may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this invention as defined in the appended claims.

Claims

1. A one-way valve, characterized by comprising a first housing (10), a second housing (20), balls (30), a compression spring (50) and a spring seat (60);

The first shell (10) and the second shell (20) are mutually sealed and fixed to form a valve inner cavity of the one-way valve, the valve inner cavity comprises a cylindrical inner cavity positioned on the first shell (10) and a semicircular inner cavity positioned on the second shell (20), the spherical shape of the ball (30) is matched with that of the semicircular inner cavity, the compression spring (50) is accommodated in the cylindrical inner cavity, one end of the compression spring (50) is abutted against the ball (30), the other end of the compression spring is abutted against the spring seat (60), and the spring seat (60) is fixed in a mounting hole of the first shell (10);

The first shell (10) is provided with a medium inflow channel (11), the second shell (20) is provided with a medium outflow channel (21), the center line of the medium inflow channel (11) and the center line of the medium outflow channel (21) are not in the same straight line, and the axial direction of the medium inflow channel (11) is tangential to the outer edge of one side of the ball (30); and

The medium inflow channel (11) extends into the cylindrical inner cavity and is staggered with the compression spring (50);

An external thread is arranged on the outer side surface of the spring seat (60), an internal thread is arranged in the mounting hole of the first shell (10), the spring seat (60) is fixedly connected with the first shell (10) through threads, and a force application hole (61) is formed in the bottom of the spring seat (60);

The check valve further comprises a ball seat (40), the ball (30) is supported by the ball seat (40), a concave circular arc surface which is attached to the circular arc surface of the ball (30) is arranged on the ball seat (40), and one end of the compression spring (50) is abutted to the ball seat (40).

2. A one-way valve according to claim 1, wherein,

The first shell (10) is arranged at the edge of the cylindrical inner cavity, the second shell (20) is provided with flange-shaped flanges at the edge of the semicircular inner cavity, a plurality of positioning holes are formed in the flange-shaped flanges, and the first shell (10) and the second shell (20) are mutually sealed and fixed through fasteners penetrating through the positioning holes.

3. A one-way valve according to claim 2, wherein,

The flange-shaped flange of the first shell (10) and/or the flange-shaped flange of the second shell (20) is provided with an annular groove (12), and the one-way valve further comprises an O-shaped sealing ring accommodated in the annular groove (12).

4. A one-way valve according to claim 1, wherein,

The ball (30) is made of ceramic, glass or stainless steel, and the ball (30) is solid or hollow.