CN210687120U

CN210687120U - One-way valve

Info

Publication number: CN210687120U
Application number: CN201921038461.2U
Authority: CN
Inventors: 廖文; 毛裕杰; 乐梅松
Original assignee: Ningbo Aikesen Automotive Electronics Co ltd
Current assignee: Ningbo Aikesen Automotive Electronics Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-06-05
Anticipated expiration: 2029-07-04

Abstract

The utility model relates to a check valve belongs to valve technical field. The utility model discloses a: the check valve comprises a check valve body, a first external pipeline connecting end, a second external pipeline connecting end, a circulation chamber, a sealing limiting part and a second external pipeline connecting end, wherein one end of the check valve body is the first external pipeline connecting end, the other end of the check valve body is the second external pipeline connecting end, the circulation chamber is arranged between the two ends of the check valve body, two symmetrical through holes are formed in the circulation chamber close to the first external pipeline connecting end; the plurality of arc-shaped protruding strips are arranged on the inner surface of the circulation chamber and are transversely and uniformly distributed around the circulation chamber, and the distances from the top ends of every two arc-shaped protruding strips to the central shaft are equal; the sealing ball is arranged in the circulation chamber, and a gap is formed between the outer surface of the sealing ball and the top end of the arc-shaped bulge; and the limiting pin penetrates through the two symmetrical through holes and is movably connected with the through holes, and the length of the limiting pin is equal to the outer diameter of the circulation chamber. The utility model discloses the check valve that the check valve circulation is efficient, sealed effectual and seal part can wash in a flexible way or change.

Description

One-way valve

Technical Field

The invention relates to a one-way valve, and belongs to the technical field of valves.

Background

The check valve is also called a check valve or a check valve, which allows only air flow or water flow to flow from an inlet end and prevents air flow or water flow from flowing reversely from an outlet end, and is applied to various fields due to its characteristics of one-way flow, simple structure, and the like. In the prior art, in order to prevent the sealing element from being flushed out of the valve body by the impact force of airflow or water flow, a blocking element in threaded connection is often arranged at an outlet end, the sealing element can be scaled or damaged along with the impact of the airflow or the water flow, the sealing element needs to be cleaned and replaced in time, and the blocking element in threaded connection wastes time and labor when being removed; furthermore, in the prior art, a one-way valve with strong bearing capacity and adjustable internal circulation rate is often pursued, and the problem of low circulation efficiency is ignored.

Disclosure of Invention

The purpose of the present invention is to provide a check valve with high circulation efficiency, good sealing effect and flexible cleaning or replacement of the sealing parts, which aims at the above problems existing in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a one-way valve comprising:

the check valve comprises a check valve body, a first external pipeline connecting end, a second external pipeline connecting end, a circulation chamber, a sealing limiting part and a second external pipeline connecting end, wherein one end of the check valve body is the first external pipeline connecting end, the other end of the check valve body is the second external pipeline connecting end, the circulation chamber is arranged between the two ends of the check valve body, two symmetrical through holes are formed in the circulation chamber close to the first external pipeline connecting end;

the plurality of arc-shaped protruding strips are arranged on the inner surface of the circulation chamber and are transversely and uniformly distributed around the circulation chamber, and the distances from the top ends of every two arc-shaped protruding strips to the central shaft are equal;

the sealing ball is arranged in the circulation chamber, and a gap is formed between the outer surface of the sealing ball and the top end of the arc-shaped bulge;

and the limiting pin penetrates through the two symmetrical through holes and is movably connected with the through holes, and the length of the limiting pin is equal to the outer diameter of the circulation chamber.

The ball sealer is under the effect of the unbalanced impact force of air current or rivers, can deviate central point and put the fluctuation, and excessive deviation can lead to ball sealer direct collision circulation cavity, shortens the life of ball sealer and circulation cavity, also can cause different cross-section air currents or rivers circulation simultaneously extremely unstable, increases the circulation resistance and reduces flow efficiency, for this reason the utility model discloses set up the unsteady of a plurality of protruding strips of arc and buffering ball sealer at the circulation cavity inner surface, make air current or rivers more peaceful steady circulation.

In the check valve, the sealing limiting part is an oblique chamfer surface extending towards the inside of the circulation chamber, and when water flow or air flow reversely flows, the sealing ball is pushed to be tightly attached to the oblique chamfer surface. The sealing limiting part is set to be the inclined chamfer surface, so that the contact area of the sealing ball and the sealing limiting part can be increased, the sealing ball and the sealing limiting part are attached more tightly under the action of air flow or water flow, and the sealing effect is further improved.

In the check valve, the maximum distance of the chamfered surface is smaller than the outer diameter of the sealing ball.

In the above one-way valve, the first external connection pipeline connection end and the second external connection pipeline connection end are both provided with an oblique chamfer surface extending outwards. The two ends are designed into the extending oblique chamfer surfaces, so that a better sealing effect can be obtained when the pipeline is connected with the one-way valve main body.

Compared with the prior art, the utility model discloses following beneficial effect has:

the arc-shaped protruding strips can effectively buffer the floating of the sealing ball, so that the air flow or water flow circulation resistance is small, and the circulation efficiency is high;

the limit pin is convenient to disassemble, and the cleaning or replacement of the sealing ball is time-saving and labor-saving;

and the sealing limiting part is set to be an inclined chamfer surface, so that the contact area between the sealing ball and the sealing limiting part is increased, the sealing ball and the sealing limiting part are more tightly attached under the action of air flow or water flow, and the sealing effect is further enhanced.

Drawings

Fig. 1 is a schematic perspective view of the check valve of the present invention;

FIG. 2 is a schematic view of another three-dimensional structure of the check valve of the present invention

FIG. 3 is a schematic cross-sectional view of the check valve of the present invention;

FIG. 4 is a schematic cross-sectional view of another aspect of the check valve of the present invention;

reference numerals:

1. a check valve body; 2. a first pipe connection end; 3. a second pipe connection end; 4. A through hole; 5. a flow-through chamber; 6. an arc-shaped raised strip; 7. a sealing ball; 8. a spacing pin; 9. A sealing limit part; 10. sealing the inclined chamfer surface of the limiting part; 11. the first and second external connecting pipelines are connected with the inclined chamfer surfaces.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example (b):

a check valve as shown in fig. 1-4, comprising a check valve body 1, one end of which is a first external connection pipeline connecting end 2, the other end of which is a second external connection pipeline connecting end 3, a circulation chamber 5 is arranged between the two ends, the circulation chamber 5 is provided with two symmetrical through holes 4 near the first external connection pipeline connecting end 2, and a sealing limiting part 9 near the second external connection pipeline connecting end 3; the arc-shaped protruding strips 6 are arranged on the inner surface of the circulation chamber 5 and are transversely and uniformly distributed around the circulation chamber 5, and the distances from the top ends of every two arc-shaped protruding strips 6 to the central axis are equal; the sealing ball 7 is arranged in the circulating chamber 5, and a gap is formed between the outer surface of the sealing ball and the top end of the arc-shaped bulge; and the limiting pin 8 penetrates through the two symmetrical through holes 4, is movably connected with the through holes 4, and has the length equal to the outer diameter of the circulation chamber.

In order to increase the contact area between the sealing ball 7 and the seal stopper 9 and obtain a better sealing effect, the seal stopper is provided as a chamfered surface 10 extending into the flow chamber.

In order to prevent the sealing ball from separating from the flow chamber and achieve a sealing state with the sealing limiting part 9, the outer diameter of the sealing ball is larger than the minimum distance of the inner extending oblique chamfer surface.

For the sealing connection of the check valve body 1 with the first external connecting pipeline 2 and the second external connecting pipeline 3, the connecting ends of the first external connecting pipeline 2 and the second external connecting pipeline 3 are both set to be the inclined chamfer surfaces 11 extending outwards.

The working principle is as follows:

when air current or rivers connect 3 inflow circulation cavity 5 from the second outer joint, the ball sealer 7 can float from top to bottom under the impact force effect of air current or rivers to with the contact of arc protruding strip 6, arc protruding strip 6 can cushion the ball sealer vertical offset distance, make on the same cross-section air current or rivers comparatively even along the protruding interval smooth and easy circulation of arc, the circulation resistance obviously reduces, and flow efficiency increases. Meanwhile, the sealing ball 7 can roll to the position of the limiting pin 8 under the driving of the air flow or the water flow, the sealing ball 7 is blocked in the circulation chamber 5 under the action of the limiting pin 8, and the air flow or the water flow can normally circulate.

When air flow or water flow enters the circulation chamber 5 from the first external connection end flow 2, the sealing ball 7 rolls to the sealing limiting part 9 under the driving of the air flow or the water flow, and the sealing ball 7 is tightly attached to the inclined chamfer surface 10 of the sealing limiting part 9 to form good air tightness so as to prevent the air flow or the water flow from reversely circulating.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A check valve, comprising:

2. The check valve of claim 1, wherein the seal limiting portion is an inclined chamfer surface extending towards the inside of the flow-through chamber, and the seal ball is pushed to be closely attached to the inclined chamfer surface when the water flow or the air flow flows in the reverse direction.

3. The check valve of claim 2, wherein an outer diameter of the sealing ball is greater than a minimum distance of the chamfered surface.

4. The check valve of claim 1, wherein the first and second external conduit connection ends are each provided as an outwardly extending chamfered surface.