WO2018214323A1

WO2018214323A1 - One-way valve

Info

Publication number: WO2018214323A1
Application number: PCT/CN2017/099957
Authority: WO
Inventors: 李辉; 雷土成
Original assignee: 广州市永合祥自动化设备科技有限公司
Priority date: 2017-05-26
Filing date: 2017-08-31
Publication date: 2018-11-29
Also published as: CN206816882U

Abstract

A one-way valve, comprising: a valve body (10), a valve core (20), a spring (30), and a first seal ring (40). The valve body is provided with a channel (11). The lateral wall of the channel has a first flange (12) provided around its circumference. The valve core is mounted in the channel and can move along the channel; the lateral wall of one end of the valve core is provided with a second flange (21), and the lateral wall of the other end of the valve core has a first mounting groove (22) provided around its circumference. The spring is sleeved on the valve core and is located in the channel. The spring is located between the first flange between the second flange. The first seal ring is detachably mounted in the first mounting groove, and the first seal ring is used for abutting against the side of the first flange away from the second flange. Because the first seal ring is detachably mounted in the first mounting groove, when a maintenance operation is performed on the one-way valve, the first seal ring is detached first, the valve core can be extracted from the channel. It is convenient to detach the valve core, without overall replacement, and therefore, the usage cost can be reduced.

Description

Check valve

Technical field

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

Background technique

When a conventional one-way valve is used for a glue or slurry that will quickly condense, the inside of the check valve is easily clogged, thereby affecting the working efficiency of the injection liquid or the slurry pump. However, after the check valve is blocked inside the cavity, the valve body in the valve body is very difficult to disassemble and clean. If it is necessary to clean the one-way valve, it takes a lot of time and labor costs. Therefore, the one-way valve that is blocked by the spool is often directly replaced, thereby greatly increasing the use cost.

Summary of the invention

Based on this, it is necessary to overcome the defects of the prior art, and provide a one-way valve, which can facilitate the disassembly and assembly of the valve core, is convenient for maintenance, and can greatly reduce the use cost.

The technical solution is as follows: a check valve comprising: a valve body, the valve body is provided with a passage, a side wall of the passage has a first flange disposed around a circumferential direction thereof; a valve core, the valve core is installed Provided in the passage and movable along the passage, an outer side wall of one end of the valve body is provided with a second flange, and the outer side wall of the other end of the valve core has a first installation disposed circumferentially thereof a spring, the spring is sleeved on the valve core and located inside the passage, the spring is located between the first flange and the second flange; and a first sealing ring The first sealing ring is detachably mounted in the first mounting groove, and the first sealing ring is configured to interfere with a side of the first flange facing away from the second flange.

In the above-mentioned one-way valve, under normal conditions, the spring is in a compressed state, and under the elastic force of the spring, the first sealing ring on the valve core abuts against the side of the first flange facing away from the second flange, and the one-way valve is Non-circulating state; when the fluid pressure at one end of the valve body in which the spring is mounted is greater than the other end of the passage, the fluid will push the spool to move, and the first sealing ring on the spool will be separated from the first flange. The passage in the valve body is unidirectionally circulated; if the fluid pressure at one end of the valve body in which the spring is mounted is less than the other end of the passage, The first sealing ring on the spool will always oppose the side of the first flange facing away from the second flange, and the one-way valve is in a non-circulating state. Since the first sealing ring is detachably mounted in the first mounting groove, when the maintenance operation of the one-way valve is required, the first sealing ring is first removed, and the valve core can be withdrawn from the passage, the spool The disassembly and assembly operation is convenient, easy to maintain, and does not require an overall replacement, which can greatly reduce the use cost.

In one embodiment, the valve core is formed with a first fluid hole extending inwardly from an end surface of the first flange, and a second fluid hole is disposed on a sidewall of the valve core, the second fluid a hole communicating with the first fluid hole, the second fluid hole being disconnected from an end of the channel adjacent to the first sealing ring when the first sealing ring abuts a side of the second flange The second fluid hole communicates with an end of the passage adjacent to the first seal ring when the first seal ring is separated from a side surface of the second flange. In this way, after the fluid enters through the first fluid hole and the second fluid hole of the valve core, when the fluid pressure is large, the valve core can be pushed to separate the first sealing ring of the valve core from the first flange, and pass through the second fluid hole. Flow out. The check valve is sensitive to the pressure of the fluid, which can shorten the length of the valve body and the valve core and reduce the size of the check valve.

In one embodiment, the second fluid holes are two or more, and the second fluid holes are equally spaced on the side wall of the valve body. In this way, the fluid flows out synchronously from the plurality of second fluid holes of the valve core, the valve core is relatively balanced, and the fluid flow effect is better.

In one embodiment, the side of the first flange facing away from the second flange is an inclined surface that is disposed obliquely toward the second flange. In this way, the first sealing ring can facilitate the collision with the side surface of the first flange, and the sealing performance is better.

In one of the embodiments, the first sealing ring is an O-ring.

In one of the embodiments, one end of the spring interferes with the first flange, and the other end of the spring interferes with the second flange.

In one embodiment, one end surface of the valve body is provided with a second mounting groove disposed around the passage, and a second sealing ring is disposed in the second mounting groove; the other end surface of the valve body A third mounting groove is disposed around the passage, and a third sealing ring is disposed in the third mounting groove.

In one embodiment, the second sealing ring is an O-ring and the third sealing ring is an O-ring.

DRAWINGS

1 is a schematic structural view of a check valve according to an embodiment of the present invention;

2 is an exploded perspective view of a one-way valve according to an embodiment of the present invention;

3 is a schematic structural view of a first sealing ring in a check valve in contact with a first flange according to an embodiment of the present invention;

4 is a structural schematic view showing the first sealing ring separated from the first flange in the one-way valve according to the embodiment of the present invention.

10. Valve body, 11, passage, 12, first flange, 121, inclined surface, 13, second mounting groove, 14, third mounting groove, 20, spool, 21, second flange, 22, a mounting groove, 23, a first fluid orifice, 24, a second fluid orifice, 30, a spring, 40, a first sealing ring, 50, a second sealing ring, 60, a third sealing ring.

detailed description

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the appended claims. Numerous specific details are set forth in the description below in order to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention, and thus the invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the description of the present invention, it is to be understood that when an element is referred to as "connecting" another element, it may be directly connected to the other element or the intermediate element may be present. In contrast, when an element is referred to as being "directly" connected to another element, there is no intermediate element.

As shown in FIGS. 1 to 4, a one-way valve includes a valve body 10, a valve body 20, a spring 30, and a first seal ring 40. The valve body 10 is provided with a passage 11. The side wall of the passage 11 has a first flange 12 disposed about its circumference. The valve body 20 is disposed in the passage 11 and is movable along the passage 11. The outer side wall of one end of the valve body 20 is provided with a second flange 21, and the other end of the valve core 20 is outside. The wall has a first mounting groove 22 disposed about its circumference. The spring 30 is sleeved on the valve core 20 and located inside the passage 11 , and the spring 30 is located between the first flange 12 and the second flange 21 . The first sealing ring 40 is detachably mounted in the first mounting groove 22, and the first sealing ring 40 is configured to interfere with a side of the first flange 12 facing away from the second flange 21 Cooperate.

In the above-mentioned one-way valve, the spring 30 is normally in a compressed state, and under the elastic force of the spring 30, the first sealing ring 40 on the spool 20 abuts against the first flange 12 facing away from the second flange 21. On the side, the check valve is in a non-circulating state; when the fluid pressure at one end of the passage 11 in which the spring 30 is mounted in the passage 11 of the valve body 10 is greater than the other end of the passage 11, the fluid will push the spool 20 to move, and the first on the spool 20 The sealing ring 40 will be separated from the first flange 12 (as shown in FIG. 4), at which time the passage 11 in the valve body 10 is unidirectionally circulated; if the passage 11 of the valve body 10 is provided with the fluid pressure at one end of the spring 30 When the other end of the passage 11 is smaller than the other end of the passage 11, the first seal ring 40 on the spool 20 will always abut against the side of the first flange 12 facing away from the second flange 21, and the check valve is in a non-circulating state. Since the first sealing ring 40 is detachably mounted in the first mounting groove 22, when the maintenance operation of the one-way valve is required, the first sealing ring 40 is first removed, and the spool 20 can be removed from the passage 11. In the middle extraction, the disassembly and assembly operation of the valve core 20 is convenient, and the maintenance is convenient, and the entire replacement is not required, which can greatly reduce the use cost.

In this embodiment, the first fluid hole 23 is formed in the valve body 20 away from the end surface of the first flange 12, and the second fluid hole 24 is disposed on the sidewall of the valve core 20. The second fluid hole 24 is in communication with the first fluid hole 23. When the first sealing ring 40 abuts the side surface of the second flange 21, the second fluid hole 24 is not in communication with one end of the passage 11 near the first sealing ring 40; when the first When the seal ring 40 is separated from the side surface of the second flange 21, the second fluid hole 24 communicates with one end of the passage 11 adjacent to the first seal ring 40. Thus, after the fluid enters through the first fluid hole 23 and the second fluid hole 24 of the valve body 20, when the fluid pressure is large, the valve core 20 can be pushed to make the first sealing ring 40 of the valve body 20 and the first flange 12 The separation is carried out through the second fluid hole 24. The one-way valve is sensitive to the pressure of the fluid, and can shorten the length of the valve body 10 and the valve core 20, and reduce the size of the one-way valve.

Further, the second fluid holes 24 are two or more, and the second fluid holes 24 are equally spaced on the side wall of the valve body 20. In this way, the fluid flows out synchronously from the plurality of second fluid holes 24 of the spool 20, the valve core 20 is relatively balanced, and the fluid flow effect is good.

Further, a side surface of the first flange 12 facing away from the second flange 21 is an inclined surface 121 that is inclined toward the second flange 21. As such, the first seal ring 40 can facilitate the interference with the side surface of the first flange 12, and the sealing performance is better. Optionally, the first sealing ring 40 is an O-ring.

In this embodiment, one end of the spring 30 is in contact with the first flange 12, and the other end of the spring 30 is in contact with the second flange 21.

In addition, one end surface of the valve body 10 is provided with a second mounting groove 13 disposed around the passage 11. A second sealing ring 50 is disposed in the second mounting groove 13 . The other end surface of the valve body 10 is provided with a third mounting groove 14 disposed around the passage 11. A third sealing ring 60 is disposed in the third mounting groove 14. Optionally, the second sealing ring 50 is an O-ring, and the third sealing ring 60 is an O-ring. After the second sealing ring 50 and the second sealing ring 50 are disposed at the end of the valve body 10, the sealing performance of the one-way valve after connecting with other pipes can be better.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A one-way valve, comprising:

a valve body, the valve body is provided with a passage, and a side wall of the passage has a first flange disposed around a circumferential direction thereof;

a spool, the spool is mounted in the passage and movable along the passage, an outer sidewall of one end of the spool is provided with a second flange, and an outer sidewall of the other end of the spool has a winding a first mounting groove disposed circumferentially thereof;

a spring sleeved on the valve core and located inside the passage, the spring being located between the first flange and the second flange;

a first sealing ring, the first sealing ring being detachably mounted in the first mounting groove, the first sealing ring being adapted to interfere with a side of the first flange facing away from the second flange Cooperate.
The check valve according to claim 1, wherein the valve core is formed with a first fluid hole extending inwardly from an end surface of the first flange, and a second wall is disposed on a sidewall of the valve body. a fluid hole, the second fluid hole being in communication with the first fluid hole, the second fluid hole being close to the channel when the first sealing ring is in contact with a side of the second flange One end of the first sealing ring is not connected; when the first sealing ring is separated from the side surface of the second flange, the second fluid hole is connected to an end of the channel close to the first sealing ring .
The check valve according to claim 2, wherein the second fluid holes are two or more, and the second fluid holes are equally spaced on the side wall of the valve body.
The check valve according to claim 1, wherein a side surface of the first flange facing away from the second flange is an inclined surface that is inclined toward the second flange.
The check valve according to any one of claims 1 to 4, wherein the first seal ring is an O-ring.
The check valve of claim 1 wherein one end of said spring is in interference with said first flange and the other end of said spring is in interference with said second flange.
The one-way valve according to claim 1, wherein one end surface of the valve body is provided with a second mounting groove disposed around the passage, and the second mounting groove is provided with a second sealing ring; The other end surface of the valve body is provided with a third mounting groove disposed around the passage, and the third mounting groove is provided with a third Sealing ring.
The check valve according to claim 7, wherein the second seal ring is an O-ring seal, and the third seal ring is an O-ring seal.