Check valve for sealing public flue

Abstract

The utility model relates to a check valve for sealing a public flue, which belongs to the field of flue valves and is characterized in that a smoke pipe connecting seat, a middle valve body, a valve separation blade and a base are sequentially arranged from an air outlet of the flue to the outside, a spring is arranged in the middle of one side, close to the base, of the valve separation blade through a spring shaft, and the base is connected with a plurality of fishbone lines through belt mounting holes. Sealing is achieved through structural cooperation, the sealing ring is installed at the front end of the valve blocking piece, the sealing effect is further improved, the valve and a range hood connector are designed in a multi-layer mode, and the multi-layer range hood sealing structure meets the requirements of various range hood smoke pipes in the market. In addition, a connection mode is added on the basis of original screw fixation, so that the flue pipe fixing device can be fixed in the flue without punching holes.

Description

Technical Field

[0001] The utility model relates to a flue check valve, in particular to a sealed public flue check valve, belonging to the field of flue valves. Background Art

[0002] A flue check valve refers to a valve that automatically opens and closes the valve plate by relying on the heat flow through the range hood to prevent the backflow of oil smoke. The movable blades of the baffle of the flue check valve in the prior art are fixed to the middle plastic body by a screw shaft. Since the blades are movable and the movable screw shaft is fixed, gaps will be generated, and sealant is generally not added to the structure, so its sealing is limited. In addition, the range hood pipe opening is single-layer, resulting in a single specification, causing many specifications of range hood smoke pipes to be mismatched and unable to be installed. In addition, the check valve in the prior art is generally fixed with screws, and the wall of the public flue is thin, and it is easy to collapse the wall when drilling, which makes installation inconvenient. Summary of the invention

[0003] In view of this, the utility model provides a sealed common flue check valve to solve the above problems existing in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A sealed public flue check valve is provided with a smoke pipe connecting seat, an intermediate valve body, a valve baffle and a base in sequence from the flue air outlet to the outside. A spring is provided at the middle of the side of the valve baffle close to the base through a spring shaft. The base is connected to a plurality of fishbone wires through mounting holes. The ends of the plurality of fishbone wires away from the base are connected by metal wires.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a sealing ring is provided on the inner wall edge of the middle valve body, and two sides of the sealing ring are respectively tightly matched with the middle valve body and the valve baffle.

[0008] Furthermore, mounting holes are provided at the four corners of the base.

[0009] Furthermore, the smoke pipe connecting seat has a stepped diameter change.

[0010] The beneficial effects of the utility model are:

[0011] The utility model achieves sealing through structural coordination, and a sealing ring is installed at the front end of the valve baffle to further improve the sealing effect. The valve and the range hood interface adopt a multi-layer design, which is compatible with a variety of range hood pipes on the market, and can be connected with apertures of 160MM, 170MM, 175MM, 180MM, 190MM, and 200MM. Moreover, a connection method is added on the basis of the original screw fixation, so that the utility model can be fixed in the flue without drilling holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is an exploded view of the structure of the utility model.

[0014] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0015] 1. Smoke pipe connecting seat, 2. Middle valve body, 3. Valve baffle, 4. Base, 5. Spring shaft, 6. Spring, 7. Fishbone wire, 8. Metal wire, 9. Sealing ring. DETAILED DESCRIPTION

[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0017] like Figure 1-2 As shown, a check valve for sealing a common flue is provided with a smoke pipe connecting seat 1, an intermediate valve body 2, a valve baffle 3 and a base 4 in sequence from the flue air outlet to the outside. A spring 6 is provided at the middle of the side of the valve baffle 3 close to the base 4 through a spring shaft 5. The base 4 is connected to a plurality of fishbone wires 7 through mounting holes, and the ends of the plurality of fishbone wires 7 away from the base 4 are connected by metal wires 8.

[0018] In another embodiment of the present invention, a sealing ring 9 is provided on the inner wall edge of the middle valve body 2 , and two sides of the sealing ring 9 are tightly matched with the middle valve body 2 and the valve baffle 3 respectively.

[0019] In another embodiment of the present invention, four corners of the base 4 are provided with mounting holes.

[0020] In another embodiment of the present invention, the smoke pipe connecting seat 1 has a stepped diameter change.

[0021] When in use, assemble the check valve, connect the smoke pipe connecting seat 1 to the smoke pipe of the range hood, and install the base 4 at the public smoke outlet. The installation method can be selected by drilling installation, or the metal wire 8 can be fixed in the smoke duct, and then fixed to the base 4 through the fishbone wire 7. The smoke flows into the smoke duct through the check valve, and the valve baffle 3 opens toward the base 4 due to the wind force. When there is no smoke, it returns to its original position due to the thrust of the spring 6 to achieve sealing.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealed common flue check valve, characterized in that: A smoke pipe connecting seat, an intermediate valve body, a valve baffle and a base are arranged in sequence from the flue air outlet to the outside. A spring is arranged on the middle part of the valve baffle close to the base through a spring shaft. The base is connected to a plurality of fishbone wires through mounting holes. The ends of the plurality of fishbone wires away from the base are connected by metal wires.

2. The sealed common flue check valve according to claim 1, characterized in that: A sealing ring is arranged on the inner wall edge of the intermediate valve body, and two sides of the sealing ring are respectively tightly matched with the intermediate valve body and the valve baffle.

3. The sealed common flue check valve according to claim 1, characterized in that: The four corners of the base are provided with mounting holes.

4. The sealed common flue check valve according to claim 1, characterized in that: The smoke pipe connecting seat has a stepped diameter change.

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