CN115807867A

CN115807867A - Check valve and fluid delivery system

Info

Publication number: CN115807867A
Application number: CN202211703237.7A
Authority: CN
Inventors: 薛力文
Original assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Current assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-03-17

Abstract

The invention provides a one-way valve and a fluid conveying system. Wherein, the valve body is equipped with first passageway, and the outer wall of valve body is equipped with the first connecting portion that sets up along the circumferential direction of first passageway. The valve plate is rotationally engaged with the valve body so that the valve plate can open or close the first passage. The first connecting piece is provided with a second channel, and the outer wall of the first connecting piece is provided with a second connecting part. The second connecting piece is provided with a third channel, and the outer wall of the second connecting piece is provided with a third connecting part. When the two ends of the first channel are respectively communicated with the second channel and the third channel correspondingly, the first connecting part is in sealing fit with the second connecting part and the third connecting part. The check valve in this application forms through the mode of assembly, and its is small, light in weight, is convenient for install and carry. In addition, the valve plate is connected with the valve body in a rotating mode, opening pressure is almost not generated, and the sensitivity of the one-way valve and the sensitivity of the fluid conveying system are improved.

Description

Check valve and fluid delivery system

Technical Field

The invention relates to the field of fluid conveying, in particular to a one-way valve and a fluid conveying system.

Background

Check valves can be used in hydraulic systems to prevent reverse flow of liquid or in pneumatic systems to prevent reverse flow of compressed air. Whereas conventional check valves are formed by machining in a casting manner. Therefore, the traditional one-way valve is large in size, heavy in weight and inconvenient to carry.

Disclosure of Invention

Accordingly, there is a need to provide a check valve and a fluid delivery system for solving the problems of large volume, heavy weight and inconvenience in carrying of the conventional check valve.

The technical scheme is as follows:

in one aspect, there is provided a check valve comprising:

the valve body is provided with a first channel, and the outer wall of the valve body is provided with a first connecting part arranged along the circumferential direction of the first channel;

a valve plate rotationally engaged with the valve body to enable the valve plate to open or close the first passage;

the first connecting piece is provided with a second channel, and the outer wall of the first connecting piece is provided with a second connecting part arranged along the circumferential direction of the second channel; and

the second connecting piece is provided with a third channel, and the outer wall of the second connecting piece is provided with a third connecting part arranged along the circumferential direction of the third channel;

when the two ends of the first channel are respectively and correspondingly communicated with the second channel and the third channel, the first connecting part is in sealing fit with the second connecting part and the third connecting part.

The technical solution is further explained below:

in one embodiment, the check valve further comprises a sealing element provided with a through hole, the inner wall of the through hole is in sealing connection with the first connecting portion, and when two ends of the first channel are correspondingly communicated with the second channel and the third channel respectively, the sealing element can be in sealing fit with both the second connecting portion and the third connecting portion.

In one embodiment, the inner wall of the through hole is provided with a first groove arranged along the axial direction of the first channel, and the first connecting part is in plug-in fit with the first groove and is in sealing connection with the inner wall of the first groove.

In one embodiment, a second groove is formed in one side, close to the first connecting portion, of the second connecting portion, and is arranged along the circumferential direction of the second channel, a first protrusion is arranged on one side, close to the second connecting portion, of the sealing member, and is arranged along the axial direction of the first channel, the first protrusion is arranged along the circumferential direction of the first channel and corresponds to the second groove, and when two ends of the first channel are respectively communicated with the second channel and the third channel, the first protrusion is in sealing connection with the inner wall of the second groove;

and/or a third groove arranged along the circumferential direction of the third channel is arranged on one side, close to the first connecting part, of the third connecting part, a second protrusion is arranged on one side, close to the third connecting part, of the third connecting part, the sealing element is arranged along the axial direction of the first channel, the third protrusion is arranged along the circumferential direction of the first channel and corresponds to the third groove, and when two ends of the first channel are correspondingly communicated with the second channel and the third channel respectively, the second protrusion is connected with the inner wall of the third groove in a sealing mode.

In one embodiment, the check valve further includes a locking member for locking the first connecting portion, the second connecting portion, and the third connecting portion into a whole.

In one embodiment, the outer diameter of the sealing element is larger than the outer diameters of the second connecting portion and the third connecting portion, the locking element is configured as a clamping band, and when the clamping band locks the first connecting portion, the second connecting portion and the third connecting portion into a whole, the sealing element is in interference fit with the inner wall of the clamping band.

In one embodiment, the check valve further comprises a sealing sleeve, the sealing sleeve penetrates through the first channel, a first flange arranged along the circumferential direction of the first channel is arranged on the outer wall of one end, close to the first connecting piece, of the sealing sleeve, the first flange is attached to one end, close to the first connecting piece, of the valve body, and when the valve plate closes the first channel, the valve plate and the valve body can be in sealing fit through the first flange.

In one embodiment, one end of the valve body close to the first connecting piece is provided with a fourth connecting portion which is used for being connected with the valve plate in a rotating mode, and the first flange is provided with an avoiding groove which is correspondingly arranged with the fourth connecting portion.

In one embodiment, a second flange arranged along the circumferential direction of the first channel is arranged on the outer wall of one end, close to the second connecting piece, of the sealing sleeve, the second flange is attached to one end, close to the second connecting piece, of the valve body, and when two ends of the first channel are correspondingly communicated with the second channel and the third channel respectively, the valve body can be in sealing fit with the second connecting piece through the second flange.

In another aspect, a fluid delivery system is provided, which comprises the one-way valve.

In the check valve and the fluid delivery system in the above embodiments, when in use, the first connecting piece and the second connecting piece are correspondingly connected to the joint in the fluid delivery system, and the valve plate can close the first passage under the action of gravity. When fluid in the fluid conveying system flows in the positive direction, the valve plate can open the first channel under the action of impact force of the fluid, and the fluid can smoothly pass through the third channel, the first channel and the second channel. When the fluid in the fluid conveying system flows reversely, the valve plate is abutted with the valve body more tightly under the action of the impact force of the fluid, and the fluid is ensured not to pass through the first channel. Compared with the traditional cast check valve, the check valve is formed by an assembling mode, has small volume and light weight, and is convenient to mount and carry. In addition, for traditional threaded connection's check valve, valve plate and valve body rotate to be connected in this application, have almost no opening pressure, have improved check valve and fluid delivery system's sensitive degree.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of one embodiment of a check valve;

FIG. 2 is a schematic illustration of the check valve of FIG. 1 shown without the lockout member;

FIG. 3 is a schematic view of the seal of FIG. 1;

FIG. 4 is a schematic view of the first connector of FIG. 1;

fig. 5 is a schematic structural view of the sealing boot in fig. 1.

Description of reference numerals:

10. a one-way valve; 100. a valve body; 110. a first channel; 120. a first connection portion; 130. a fourth connecting portion; 200. a valve plate; 300. a first connecting member; 310. a second channel; 320. a second connecting portion; 330. a second groove; 400. a second connecting member; 410. a third channel; 420. a third connecting portion; 500. a seal member; 510. a through hole; 520. a first groove; 530. a first protrusion; 540. a second protrusion; 600. a locking member; 700. sealing sleeves; 710. a first flange; 711. an avoidance groove; 720. a second flange.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In one embodiment, a fluid delivery system is provided that includes a one-way valve 10. Thus, the check valve 10 can effectively prevent the fluid in the fluid delivery system from flowing reversely, and the reliability of the fluid delivery system is improved.

The fluid may be liquid or gas.

As shown in fig. 1 and 2, in one embodiment, a check valve 10 is provided, including a valve body 100, a valve plate 200, a first connector 300, and a second connector 400. Wherein, the valve body 100 is provided with a first passage 110, and the outer wall of the valve body 100 is provided with a first connection portion 120 provided along the circumferential direction of the first passage 110. The valve plate 200 is rotatably engaged with the valve body 100 such that the valve plate 200 can open or close the first passage 110. The first connector 300 is provided with a second passage 310, and the outer wall of the first connector 300 is provided with a second connection portion 320 arranged in the circumferential direction of the second passage 310. The second connector 300 is provided with a third passage 410, and the outer wall of the second connector 400 is provided with a third connection part 420 provided in the circumferential direction of the third passage 410. When the two ends of the first channel 110 are respectively communicated with the second channel 310 and the third channel 410, the first connection portion 120 is in sealing fit with the second connection portion 320 and the third connection portion 420.

The check valve 10 of the above embodiment, in use, connects the first connector 300 and the second connector 400 at the corresponding connection in the fluid delivery system, and the valve plate 200 can close the first passage 110 under the action of gravity. When the fluid in the fluid delivery system flows in the forward direction (as shown in the direction a in fig. 2), the valve plate 200 can open the first channel 110 under the impact force of the fluid, and the fluid can smoothly pass through the third channel 410, the first channel 110 and the second channel 310. When the fluid in the fluid delivery system flows in the reverse direction (as shown in the direction B in fig. 2), the valve plate 200 collides with the valve body 100 more tightly under the impact force of the fluid, ensuring that the fluid cannot pass through the first passage 110. The check valve 10 of the present application is formed by assembly, is small, lightweight, and easy to install and carry, as compared to conventional cast check valves. In addition, compared with the traditional threaded one-way valve, the valve plate 200 is rotationally connected with the valve body 100 in the application, the opening pressure is almost not generated, and the sensitivity of the one-way valve 10 is improved.

The first connector 300 and the second connector 400 may be flanges, clamp connectors, or other connecting structures. The first connector 300 and the second connector 400 can be correspondingly connected at the connection position in the fluid conveying system through a plugging or screwing mode and the like.

Wherein, valve plate 200 and valve body 100 normal running fit can be for the one end of valve plate 200 and valve body 100 to rotate to be connected, also can be for the inner wall of valve plate 200 and first passageway 110 to rotate to be connected, only need make valve plate 200 can correspond to open or close first passageway 110 can. The valve plate 200 may be a thin plate made of 316L material. In this way, the sensitivity of the check valve 10 is further improved.

Wherein the first connection portion 120 may be provided at one end of the valve body 100 or at the middle of the valve body 100. The outer diameter of the valve body 100 can be flexibly adjusted according to the actual use requirement. The valve plate 200 may be disposed at one end of the valve body 100 or at the middle of the valve body 100. In the present embodiment, the first connecting portion 120 is configured as a first annular flange. The second connection portion 320 is provided as a second annular flange. The third connection portion 420 is provided as a third annular flange. The valve plate 200 is disposed at one end of the valve body 100, the first connecting portion 120 is disposed at one end of the valve body 100 away from the valve plate 200, and one of the first connecting member 300 and the second connecting member 400 is sleeved on an outer wall of the valve body 100.

As shown in fig. 1 and fig. 2, the check valve 10 further includes a sealing member 500 having a through hole 510, an inner wall of the through hole 510 is connected to the first connecting portion 120 in a sealing manner, and when two ends of the first channel 110 are respectively communicated with the second channel 310 and the third channel 410, the sealing member 500 can be matched with the second connecting portion 320 and the third connecting portion 420 in a sealing manner. Thus, the reliability of the sealing between the first connector 300, the valve body 100 and the second connector 400 is increased, the leakage of fluid from between the first connector 300 and the valve body 100 or from between the second connector 400 and the valve body 100 is avoided, and the reliability of the check valve 10 is improved.

The sealing member 500 may be a sealing gasket, a sealing ring or other sealing connection.

As shown in fig. 1 and 3, optionally, the inner wall of the through hole 510 is provided with a first groove 520 arranged along the axial direction of the first channel 110, and the first connection portion 120 is in plug-in fit with the first groove 520 and is connected with the inner wall of the first groove 520 in a sealing manner. In this way, the sealing member 500 can be fixed to the first connection portion 120 so as to hermetically connect the first connection portion 120 with the second connection portion 320 and the third connection portion 420. In addition, the first connection portion 120 is inserted into and matched with the first groove 520, so that the contact area between the first connection portion 120 and the sealing member 500 is increased, and the reliability of the sealing fit between the first connection portion 120 and the second connection portion 320 and between the first connection portion 120 and the third connection portion 420 is increased, thereby improving the reliability of the check valve 10.

As shown in fig. 1, 3 and 4, optionally, a second groove 330 is disposed along a circumferential direction of the second channel 310 on a side of the second connecting portion 320 close to the first connecting portion 120, a first protrusion 530 is disposed along an axial direction of the first channel 110 and on a side of the sealing member 500 close to the second connecting portion 320, the first protrusion 530 is disposed along a circumferential direction of the first channel 110 and corresponding to the second groove 330, and when two ends of the first channel 110 are respectively communicated with the second channel 310 and the third channel 410, the first protrusion 530 is connected to an inner wall of the second groove 330 in a sealing manner. In this way, the contact area between the second connection part 320 and the sealing member 500 is increased, so that the reliability of the sealing fit between the first connection part 120 and the second connection part 320 is increased, and the reliability of the check valve 10 is improved.

As shown in fig. 1 and fig. 3, optionally, a third groove disposed along the circumferential direction of the third channel 410 is disposed on one side of the third connecting portion 420 close to the first connecting portion 120, a second protrusion 540 is disposed along the axial direction of the first channel 110 and close to one side of the third connecting portion 420, the third protrusion is disposed along the circumferential direction of the first channel 110 and corresponding to the third groove, and when two ends of the first channel 110 are respectively communicated with the second channel 310 and the third channel 410, the second protrusion 540 is in sealing connection with an inner wall of the third groove. In this way, the contact area between the third connection part 420 and the sealing member 500 is increased, so that the reliability of the sealing fit between the first connection part 120 and the third connection part 420 is increased, and the reliability of the check valve 10 is improved.

In the present embodiment, the second connector 400 has the same structural shape as the first connector 300.

As shown in fig. 1, in one embodiment, the check valve 10 further includes a locking member 600, and the locking member 600 is used for locking the first connecting portion 120, the second connecting portion 320, and the third connecting portion 420 into a whole. Thus, the first connector 300, the valve body 100 and the second connector 400 can be stably and reliably locked into a whole, and the reliability of the check valve 10 is improved.

The locking member 600 may be a clip, a bolt, or other locking structure.

As shown in fig. 1, 2 and 3, optionally, the outer diameter of the sealing member 500 is larger than the outer diameter of the second connecting portion 320 and the outer diameter of the third connecting portion 420, and the locking member 600 is configured as a clip, so that when the clip locks the first connecting portion 120, the second connecting portion 320 and the third connecting portion 420 together, the sealing member 500 is in interference fit with the inner wall of the clip. Therefore, the sealing member 500 can be filled in the gap between the clamp and the valve body 100, so that the valve body 100, the first connecting member 300, the second connecting member 400 and the clamp cannot move relatively, and the reliability of the check valve 10 is improved.

As shown in fig. 1, 2 and 5, in an embodiment, the check valve 10 further includes a sealing sleeve 700, the sealing sleeve 700 is disposed through the first passage 110, an outer wall of one end of the sealing sleeve 700 close to the first connector 300 is provided with a first flange 710 disposed along a circumferential direction of the first passage 110, the first flange 710 is attached to one end of the valve body 100 close to the first connector 300, and when the valve plate 200 closes the first passage 110, the first flange 710 can seal and engage the valve plate 200 with the valve body 100. Thus, when the valve plate 200 closes the first passage 110, the first flange 710 can fill the gap between the valve plate 200 and the valve body 100, prevent the fluid from leaking from the joint between the valve plate 200 and the valve body 100, ensure that the fluid does not flow in the reverse direction in the check valve 10, and improve the reliability of the check valve 10.

As shown in fig. 1 and 5, a fourth connection portion 130 for rotatably connecting valve plate 200 is provided at one end of valve body 100 close to first connector 300, and first flange 710 is provided with an escape groove 711 provided corresponding to fourth connection portion 130. In this way, the valve plate 200 does not interfere with the first flange 710 during the process of opening or closing the first passage 110, improving the reliability of the check valve 10.

Optionally, the fourth connecting portion 130 includes a first connecting plate and a second connecting plate disposed at an interval, the first connecting plate is provided with a first connecting hole, the second connecting plate is provided with a second connecting hole disposed corresponding to the first connecting hole, the valve plate 200 is provided with a connecting passage, and the check valve 10 further includes a connecting pin capable of sequentially passing through the first connecting hole, the connecting passage and the second connecting hole to rotatably connect the valve plate 200 with the valve body 100. In this manner, smooth rotation of the valve plate 200 with respect to the valve body 100 to open or close the first passages 110 is ensured.

As shown in fig. 1, 2 and 5, optionally, a second flange 720 arranged along the circumferential direction of the first passage 110 is arranged on an outer wall of one end of the sealing sleeve 700 close to the second connector 400, the second flange 720 is attached to one end of the valve body 100 close to the second connector 400, and when two ends of the first passage 110 are correspondingly communicated with the second passage 310 and the third passage 410, respectively, the second flange 720 can seal and cooperate the valve body 100 with the second connector 400. Thus, the second flange 720 can be filled in the gap between the second connector 400 and the valve body 100, and fluid leakage from the gap between the valve body 100 and the second connector 400 is avoided, thereby improving the reliability of the check valve 10.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

It should also be understood that in explaining the connection relationship or the positional relationship of the elements, although not explicitly described, the connection relationship and the positional relationship are interpreted to include an error range which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A check valve, comprising:

a valve plate rotationally engaged with the valve body such that the valve plate can open or close the first passage;

when two ends of the first channel are respectively and correspondingly communicated with the second channel and the third channel, the first connecting part is in sealing fit with the second connecting part and the third connecting part.

2. The check valve of claim 1, further comprising a sealing member having a through hole, wherein an inner wall of the through hole is in sealing connection with the first connecting portion, and when two ends of the first channel are respectively in corresponding communication with the second channel and the third channel, the sealing member can be in sealing engagement with both the second connecting portion and the third connecting portion.

3. The check valve as claimed in claim 2, wherein the inner wall of the through hole is provided with a first groove arranged along the axial direction of the first channel, and the first connecting part is in plug fit with the first groove and is in sealing connection with the inner wall of the first groove.

4. The check valve according to claim 2, wherein a second groove is formed in one side of the second connecting portion, which is close to the first connecting portion, along a circumferential direction of the second channel, the sealing member is provided with a first protrusion along an axial direction of the first channel and one side of the sealing member, which is close to the second connecting portion, the first protrusion is arranged along the circumferential direction of the first channel and corresponds to the second groove, and when two ends of the first channel are respectively communicated with the second channel and the third channel, the first protrusion is in sealing connection with an inner wall of the second groove;

and/or a third groove arranged along the circumferential direction of the third channel is arranged on one side, close to the first connecting part, of the third connecting part, a second bulge is arranged along the axial direction of the first channel and close to one side of the third connecting part, the third bulge is arranged along the circumferential direction of the first channel and corresponds to the third groove, and when two ends of the first channel are correspondingly communicated with the second channel and the third channel respectively, the second bulge is in sealing connection with the inner wall of the third groove.

5. The check valve of claim 2, further comprising a locking member for locking the first, second, and third connecting portions together.

6. The check valve of claim 5, wherein an outer diameter of the sealing member is larger than an outer diameter of the second connecting portion and an outer diameter of the third connecting portion, and the locking member is configured as a band, and the sealing member is in interference fit with an inner wall of the band when the band locks the first connecting portion, the second connecting portion, and the third connecting portion together.

7. The check valve as claimed in any one of claims 1 to 6, further comprising a sealing sleeve, wherein the sealing sleeve is disposed through the first passage, a first flange is disposed on an outer wall of the sealing sleeve near one end of the first connecting member and arranged along a circumferential direction of the first passage, the first flange is attached to one end of the valve body near the first connecting member, and when the valve plate closes the first passage, the first flange can seal and engage the valve plate with the valve body.

8. The check valve of claim 7, wherein one end of the valve body close to the first connecting piece is provided with a fourth connecting portion for rotationally connecting with the valve plate, and the first flange is provided with an avoiding groove corresponding to the fourth connecting portion.

9. The check valve as claimed in claim 7, wherein a second flange is disposed on an outer wall of one end of the sealing sleeve close to the second connecting member, the second flange is disposed along a circumferential direction of the first passage, the second flange is attached to one end of the valve body close to the second connecting member, and when two ends of the first passage are respectively communicated with the second passage and the third passage, the second flange can seal and engage the valve body with the second connecting member.

10. A fluid delivery system comprising a one-way valve as claimed in any one of claims 1 to 9.