WO2016180252A1

WO2016180252A1 - Structurally improved one-way valve

Info

Publication number: WO2016180252A1
Application number: PCT/CN2016/080863
Authority: WO
Inventors: 莫少难
Original assignee: 深圳市奥途迪赛自动化设备有限公司
Priority date: 2015-05-08
Filing date: 2016-05-03
Publication date: 2016-11-17
Also published as: CN204573209U

Abstract

Disclosed is a structurally improved one-way valve, comprising a valve body (10), a valve core (20) and a return spring (30), wherein the interior of the valve body (10) forms an accommodating cavity (11) with two open ends, a boss (12) protrudes on an inner wall, a through hole (121) is provided on the boss (12), and a first gas hole (13) is provided on a side wall of the valve body (10); the valve core (20) comprises an upper guide part (21), a raised shoulder (22), a middle guide part (23) and a lower guide part (24) successively connected, the valve core (20) movably passes into the through hole (121), an outer wall of the middle guide part (23) is closely attached to the inner wall of the valve body (10), and a second gas hole (231), penetrating from front to back, is provided on the middle guide part (23); and the return spring (30) is sheathed on the outside of the lower guide part (24) and is fixed via a nut (40). The one-way valve solves the problem conventionally in the art of continuous intake of gas not being possible, effectively improves working efficiency, has a simple structure, and effectively lowers production costs.

Description

A structurally improved check valve

Technical field

The present invention relates to the field of check valve technology, and more particularly to a one-way valve with improved structure.

Background technique

The one-way valve can prevent the reverse flow of the gas, and control the entry of the gas according to the need. The existing one-way valve generally includes a valve body, a valve core and a return spring, and the valve core is disposed in the valve body when the intake air is needed. The valve core is opened, and the gas passes through the gap between the valve core and the valve body. When the valve core is stopped, the valve core will return to the original position under the action of the return spring, thereby interrupting the intake air. However, for some production processes that require constant air intake, interrupting intake air can result in inefficient work and increased cost.

Therefore, it is urgent to develop a new technical solution to solve the above problems.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide a one-way valve with improved structure, which solves the problem that the conventional technology cannot continuously feed air, effectively improves work efficiency, and has a simple structure. Effectively reduce production costs.

In order to achieve the above object, the present invention adopts the following technical solutions:

The utility model relates to a one-way valve with improved structure, comprising a valve body, a valve core and a return spring; the inside of the valve body forms an accommodating cavity which is open at both ends, and the inner wall of the valve body is convexly provided with a boss, and the boss is arranged on the boss a through hole, a first air hole is formed in a sidewall of the valve body; the valve core includes an upper guiding portion, a shoulder, and a joint a middle guiding portion and a lower guiding portion, the valve core is movably passed through the through hole and the outer wall of the middle guiding portion is in close contact with the inner wall of the valve body, and the middle guiding portion is provided with a second air hole penetrating forward and backward; the resetting The spring sleeve is disposed outside the lower guiding portion and is fixed by a nut; when the current end is ingested, a gap is formed between the upper guiding portion and the boss, the middle guiding portion covers the first air hole; when the side end is inflated, The shoulder covers the through hole, and the first air hole communicates with the accommodating cavity.

As a preferred solution, the first air holes are plural, and the plurality of first air holes are evenly distributed on the sidewall of the valve body.

As a preferred solution, the two ends of the return spring abut against the middle guide and the nut respectively.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solution that the first air hole is opened on the side wall of the valve body, and the middle guiding portion is provided with front and rear through. a second air hole; when the current end is inflated, the valve core moves backward, a gap is formed between the upper guiding portion and the boss, the middle guiding portion covers the first air hole, and the gas enters the receiving cavity through the second air hole, When the front end stops the intake air, the valve core returns to the original position under the action of the return spring. At this time, the shoulder seal covers the through hole, and the first air hole communicates with the accommodating cavity, and the gas enters the accommodating through the first air hole. In the cavity, the function of the side end air intake is realized, thereby solving the problem that the conventional technology cannot continuously feed the air, effectively improving the work efficiency, and the structure is simple, and the production cost is effectively reduced.

DRAWINGS

The invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

1 is a schematic perspective view of a preferred embodiment of the present invention;

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention;

Figure 3 is a schematic cross-sectional view showing the intake of the front end of the preferred embodiment of the present invention;

Figure 4 is a schematic cross-sectional view of the side end intake of the preferred embodiment of the present invention.

Description of the reference numerals.

10, valve body 11, housing cavity

12, boss 121, through hole

13, the first air hole 20, the spool

21, upper guide 22, shoulder

23, the middle guiding portion 231, the second air hole

24, lower guide 30 return spring

40, nut.

detailed description

Referring to Figures 1 through 4, there is shown a specific construction of a preferred embodiment of the present invention including a valve body 10, a spool 20 and a return spring 30.

The inside of the valve body 10 is formed with a receiving cavity 11 open at both ends. The inner wall of the valve body 10 is convexly provided with a boss 12, and the boss 12 is provided with a through hole 121, and the side wall of the valve body 10 The first air hole 13 is provided in the upper opening, and in the embodiment, the first air hole 13 is plural, and the plurality of first air holes 13 are evenly distributed on the side wall of the valve body 10.

The spool 20 includes an upper guide portion 21, a shoulder 22, a middle guide portion 23, and a lower guide portion 24 that are sequentially connected, and the spool 20 is movably passed through the through hole 121 and the outer wall of the middle guide portion 23 and the valve The inner wall of the body 10 is in close contact with each other, and the middle guide portion 23 is provided with a second air hole 231 penetrating therethrough. When the front end is inflated, a gap is formed between the upper guiding portion 21 and the boss 12, and the gas enters the accommodating cavity 11 through the second air hole 231, and the middle guiding portion 23 covers the first air hole 13. When the side end is inflated, the shoulder 22 covers the through hole 121. The first air hole 13 communicates with the accommodating cavity 11 , and the gas enters the accommodating cavity 11 through the first air hole 13 .

The return spring 30 is sleeved outside the lower guide portion 24 and fixed by a nut 40. Both ends of the return spring 30 abut against the middle guide portion 23 and the nut 40, respectively.

The working principle of the invention is as follows:

When the front end is inflated, the air pipe abuts against the valve core 20 to move the valve body 20 backward, and a gap is formed between the upper guiding portion 21 and the boss 12, and the middle guiding portion 23 covers the first air hole 13, the gas After entering the accommodating cavity 11 through the second air hole 231, when the air pipe leaves the valve core 20, the valve core 20 is restored to the original position by the return spring 30, and the front end intake air is stopped; at this time, the shoulder 22 is covered. The through hole 121 communicates with the accommodating cavity 11 , and the gas enters the accommodating cavity 11 through the first air hole 13 to realize the function of the side end air intake.

In summary, the design of the present invention is focused on that a first air hole is formed in a side wall of the valve body, and the middle air hole is provided on the middle guide portion; the spool is oriented toward the front end. After the movement, a gap is formed between the upper guiding portion and the boss, the middle guiding portion covers the first air hole, the gas enters the accommodating cavity through the second air hole, and the valve core is at the return spring when the current end stops the intake air Return to the original position under action, this The shoulder seals the through hole, and the first air hole communicates with the accommodating cavity, and the gas enters the accommodating cavity through the first air hole to realize the function of the side end air intake, thereby solving the traditional technology that cannot continue The problem of gas, effectively improve work efficiency, and the structure is simple, effectively reducing production costs.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

The utility model relates to a one-way valve with improved structure, which is characterized in that: a valve body, a valve core and a return spring are included; a cavity for opening at both ends is formed inside the valve body, and a boss is convex on the inner wall of the valve body, a through hole is defined in the boss, and a first air hole is defined in a sidewall of the valve body; the valve core includes an upper guiding portion, a shoulder, a middle guiding portion and a lower guiding portion which are sequentially connected, and the valve core is movable Passing through the through hole and the outer wall of the middle guiding portion is in close contact with the inner wall of the valve body, the middle guiding portion is provided with a second air hole penetrating forward and backward; the return spring is sleeved outside the lower guiding portion and fixed by a nut; When the front end is inflated, a gap is formed between the upper guiding portion and the boss, the middle guiding portion covers the first air hole; when the side end is inflated, the shoulder covers the through hole, the first air hole and the first air hole The accommodation chamber is connected.
A one-way valve with improved structure according to claim 1, wherein the plurality of first air holes are plural, and the plurality of first air holes are evenly distributed on the side wall of the valve body.
A one-way valve with improved structure according to claim 1, wherein both ends of the return spring abut against the middle guide and the nut.