CN215806541U

CN215806541U - Check valve

Info

Publication number: CN215806541U
Application number: CN202122417430.1U
Authority: CN
Inventors: 蓝永华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-02-11
Anticipated expiration: 2031-10-08

Abstract

The utility model discloses a check valve, which comprises an installation seat with a vent hole, a hollow pipe connected with the installation seat, a convex ring arranged on the inner wall of the hollow pipe, a baffle plate arranged along the radial direction of the hollow pipe, and two valve plates hinged with the inner wall of the hollow pipe, wherein the two valve plates can be attached to the convex ring and seal the hollow pipe in a free state, and the check valve is characterized in that: the hollow pipe is detachably connected with a first connecting pipe, the first connecting pipe is detachably connected with a second connecting pipe, the diameter of the hollow pipe is larger than that of the first connecting pipe, and the diameter of the first connecting pipe is larger than that of the second connecting pipe, so that the hollow pipe can be conveniently connected with pipelines with different diameters; the utility model has the advantages of reasonable design, convenient installation and disassembly, no falling of the sealing ring and good sealing effect.

Description

Check valve

Technical Field

The utility model relates to the field of check valves, in particular to a check valve capable of preventing oil smoke from flowing backwards.

Background

The check valve is used for a pipeline system, mainly has the functions of preventing media from flowing backwards and can be suitable for pipelines of various media, the check valve is arranged on the pipeline to form one of fluid components of the complete pipeline, and the flue check valve is also called an inner wall hood and is an environment-friendly product popularized by a construction department. The flue check valve is widely applied to modern housing construction, and a big problem is solved for a novel high-grade house due to the generation of the flue check valve. It can prevent the oil smoke refluence, can play the connection effect of pipeline again.

The existing check valve is not provided with a level gauge, so that the existing check valve cannot be accurately installed, and the installed check valve has poor levelness and cannot be in the optimal working state; the hollow pipe, the first connecting pipe and the second connecting pipe are not provided with corresponding clamping devices, so that the hollow pipe, the first connecting pipe and the second connecting pipe are easy to loosen and fall off, secondary reinforcement is required to be carried out by using viscose glue, and the mounting is inconvenient; when attached with glue, the parts are cumbersome to remove and replace.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the check valve which is reasonable in design, convenient to install and disassemble, free of falling of a sealing ring and good in sealing effect.

The utility model provides a check valve, including the mount pad that has the air vent, with hollow tube, setting that the mount pad is connected are in bulge loop on the hollow tube inner wall, edge the radial baffle that sets up of hollow tube, with two valve blocks of hollow tube inner wall articulated, two valve blocks can laminate with the bulge loop and seal the hollow tube under free state, the hollow tube can be dismantled and be connected with first connecting pipe, first connecting pipe can be dismantled and be connected with the second connecting pipe, the diameter of hollow tube is greater than the diameter of first connecting pipe, the diameter of first connecting pipe is greater than the diameter of second connecting pipe is convenient for with the pipe connection of different diameters.

Furthermore, the outer walls of the hollow pipe and the second connecting pipe are correspondingly provided with at least two clamping parts, the inner wall of the first connecting pipe is provided with a clamping groove corresponding to the clamping parts, and the clamping parts are inserted into the clamping grooves and then rotate to realize connection and fixation.

Further, the two clamping parts are two oppositely arranged bulges, and the clamping groove is an L-shaped groove.

Further, at least one level gauge is arranged on the mounting base.

Furthermore, a flexible sealing ring is integrally formed on the mounting surface of the mounting seat.

Further, the convex ring is arranged in an inclined mode.

The utility model has the beneficial effects that: the mounting seat is provided with a level gauge, and whether the mounting seat is in a horizontal position or not can be observed through the level gauge so that the check valve is in an optimal working state; the flexible sealing ring is integrally formed on the mounting surface of the mounting seat, so that oil smoke is prevented from leaking, and the flexible sealing ring is convenient and quick to process and is prevented from loosening by adopting integral forming; the hollow pipe, the first connecting pipe and the second connecting pipe are connected in a detachable connection mode, so that the mounting and the dismounting are convenient, the hollow pipe can be connected with pipelines of different specifications, and the application range is wide.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic illustration of a split structure of the present invention;

FIG. 4 is a schematic view of the present invention with the first and second connecting tubes removed;

FIG. 5 is a schematic structural diagram of two valve plates according to the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-5, a check valve comprises a mounting base 2 with a vent hole 1, wherein the vent hole 1 is used for allowing oil smoke to pass through, a hollow tube 3 connected with the mounting base 2, and a convex ring 4 arranged on the inner wall of the hollow tube 3, the hollow tube 3 is transparent, so that the opening states of two valve plates 5 can be conveniently observed, the convex ring 4 is preferably arranged in an inclined manner, the inclined arrangement increases the area of the two valve plates 5 matched with the convex ring 4, so that the stress area is increased when a fan or oil smoke exhauster works, the two valve plates 5 can be more easily opened, and the oil smoke and other gases are discharged to the outside; follow the radial baffle 6 that sets up of hollow tube 3, with two valve blocks 5 of 3 inner walls of hollow tube articulated, baffle 6 can be used for sealing the clearance 13 between two valve blocks 5, avoids the flue gas backward flow under free state, two valve blocks 5 can laminate with bulge loop 4 and seal hollow tube 3 under free state, hollow tube 3 can be dismantled and be connected with first connecting pipe 7, first connecting pipe 7 can be dismantled and be connected with second connecting pipe 8, the diameter of hollow tube 3 is greater than the diameter of first connecting pipe 7, the diameter of first connecting pipe 7 is greater than the diameter of second connecting pipe 8 is convenient for with the pipe connection of different diameters, can match the pipeline of different specifications, and application scope is more square.

Referring to fig. 3 and 4 again, at least two clamping components 9 are correspondingly arranged on the outer walls of the hollow tube 3 and the second connecting tube 8, and the two clamping components 9 are preferably two protrusions, such as cylinders, which are oppositely arranged; a clamping groove 10 corresponding to the clamping part 9 is formed in the inner wall of the first connecting pipe 7, the clamping groove 10 is preferably an L-shaped groove, and the clamping part 9 is inserted into the clamping groove 10 and then rotates to realize connection and fixation; the mounting base 2 is also provided with a level gauge 11, the level gauge 11 is a common measuring tool for measuring small angles and can be used for measuring the horizontal position of equipment mounting, the level gauge 11 comprises a bubble level gauge, a universal level gauge, a cylindrical level gauge, an integrated level gauge, a mini level gauge, a ruler level gauge and the like, the utility model adopts the bubble level gauge, has small volume, low cost and convenient observation, the mounting surface of the mounting base 2 is integrally formed with a flexible sealing ring 12 to avoid oil smoke leakage, the mounting base is integrally formed and has convenient and quick processing, the flexible sealing ring 12 is prevented from loosening,

the working principle is as follows: the mounting base 2 can be fixedly connected with a flue on a wall body through parts such as screws, bolts and the like, when the mounting base is mounted, whether the mounting base is in a horizontal position or not can be observed through the level gauge 11, so that the check valve is in an optimal working state, two ends of the two valve plates 5 are correspondingly hinged with the inner wall of the hollow tube 3, the baffle 6 can be used for sealing a gap between the two valve plates 5, and the two valve plates 5 are in a normally closed state, so that external oil smoke and gas are prevented from flowing back to the indoor; according to the size of the exhaust pipe of the smoke machine or the blower, the exhaust pipe can be selected to be connected with any one of the hollow pipe 3, the first connecting pipe 7 and the second connecting pipe 8, for example, the diameter of the hollow pipe 3 can be 180MM, the diameter of the first connecting pipe 7 can be 160MM, and the diameter of the second connecting pipe 8 can be 150 MM; because the hollow pipe 3, the first connecting pipe 7 and the second connecting pipe 8 are connected in a detachable connection mode, the installation and the disassembly are convenient, after the connection is finished, when a range hood or a fan works, the two valve plates 5 are pushed by wind power to rotate to an open state, and indoor oil smoke and gas are discharged outdoors through the check valve.

It should be noted that: in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it is to be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a check valve, including the mount pad that has the air vent, with hollow tube that the mount pad is connected, set up bulge loop on the hollow tube inner wall, follow the radial baffle that sets up of hollow tube, with two valve blocks of hollow tube inner wall articulated, two valve blocks can with the bulge loop laminating under free state and seal hollow tube, characterized by: the hollow pipe is detachably connected with a first connecting pipe, the first connecting pipe is detachably connected with a second connecting pipe, the diameter of the hollow pipe is larger than that of the first connecting pipe, and the diameter of the first connecting pipe is larger than that of the second connecting pipe, so that the hollow pipe can be conveniently connected with pipelines with different diameters.

2. The check valve of claim 1, wherein: the outer walls of the hollow pipe and the second connecting pipe are correspondingly provided with at least two clamping parts, the inner wall of the first connecting pipe is provided with a clamping groove corresponding to the clamping parts, and the clamping parts are inserted into the clamping grooves and then rotate to realize connection and fixation.

3. The check valve of claim 2, wherein: the two clamping parts are two protrusions which are oppositely arranged, and the clamping groove is an L-shaped groove.

4. The check valve of claim 1 or 2, wherein: at least one level gauge is arranged on the mounting seat.

5. The check valve of claim 4, wherein: and a flexible sealing ring is integrally formed on the mounting surface of the mounting seat.

6. The check valve of claim 1, wherein: the convex ring is arranged obliquely.