Quickly-mounted check valve seat

Abstract

The utility model relates to a quick installation type check valve seat which comprises a valve seat body, a large sleeve and a small sleeve, a plurality of elastic sealing rings are arranged on the outer circumference of the large sleeve and the outer circumference of the small sleeve, the back face of the valve seat body is connected with the small sleeve, and the large sleeve is arranged on the small sleeve in a sleeved mode. According to the quick installation type check valve seat, the large sleeve and the small sleeve are used for corresponding to the flue openings with different hole diameters respectively, the quick installation type check valve seat is mainly suitable for quick installation of the flue openings with the two hole diameters of 160 mm and 180 mm, meanwhile, the elastic sealing rings on the sleeves make elastic contact with the inner walls of the flue openings, a multi-channel sealing structure is formed, and the sealing performance of the flue openings is improved. Therefore, the smoke is isolated and sealed; compared with a traditional check valve seat, important improvement is made, the problem that an existing check valve is tedious in the installation process is solved, and installation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of flue gas backflow preventer valves, and specifically relates to a quick-installation backflow preventer valve seat. Background Technology

[0002] As is well known, backflow preventers used in kitchens are installed inside the kitchen ductwork to prevent exhaust fumes or other foreign objects from flowing back into the kitchen. Existing backflow preventers are relatively cumbersome to install, specifically in the following two ways: 1. The valve seat needs to be fixed to the duct wall, requiring the application of sealant, drilling holes, and screwing in screws or using cable ties and steel strips for fixation. This step requires the user to complete the installation themselves. Since the duct opening is usually located above the ceiling in a confined space, and the valve needs to be aligned precisely with the duct opening, the operation is very inconvenient. Therefore, there is significant room for improvement in practicality and operability; 2. In existing technology, when fixing the backflow preventer seat to the duct wall, it is necessary to ensure that the contact surface is seamless. The current method involves attaching a smooth-surfaced tile to the duct opening and drilling a corresponding round hole in the tile, which undoubtedly increases the workload. Utility Model Content

[0003] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing a quick-installation check valve seat, simplifying the operation process, and achieving quick installation and sealing of the check valve seat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A quick-install check valve seat includes a valve seat body, a large sleeve and a small sleeve. Multiple elastic sealing rings are provided on the outer circumference of both the large sleeve and the small sleeve. The small sleeve is connected to the back of the valve seat body, and the large sleeve is fitted onto the small sleeve.

[0006] To better realize this utility model, the above structure is further optimized, and the elastic sealing ring is made of rubber.

[0007] To better realize this utility model, the above structure is further optimized by providing a connecting ring extending from the back of the valve seat body, and a small sleeve is fitted onto the connecting ring.

[0008] To better realize this utility model, the above structure is further optimized by providing a glue-applying groove on the back of the valve seat body.

[0009] To better realize this utility model, the above structure is further optimized by providing a sealing strip on the back of the valve seat body.

[0010] To better realize this utility model, the above structure is further optimized by providing a cable tie fastening hole on the valve seat body.

[0011] In order to better realize the utility model, further optimization is made in the above structure, and a level meter is arranged on the front surface of the valve seat body.

[0012] In order to better realize the utility model, further optimization is made in the above structure, and a direction indicating arrow is arranged on the front surface of the valve seat body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The quick installation type check valve seat provided by the utility model utilizes the large sleeve and the small sleeve to correspond to flue openings with different hole diameters, is mainly suitable for quick installation of flue openings with two different hole diameters of 160 mm and 180 mm, simultaneously utilizes the elastic sealing rings on the sleeves to elastically contact the inner walls of the flue openings, forms a plurality of sealing structures, and realizes the isolation and sealing of flue gas; compared with the traditional check valve seat, the utility model makes important improvements, solves the problem that the existing check valve is relatively complicated in the installation process, and makes the installation more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0016] Figure 1 is the back structure schematic view of the quick installation type check valve seat of the utility model;

[0017] Figure 2 is the front structure schematic view of the quick installation type check valve seat of the utility model;

[0018] Figure 3 is the side sectional view of the quick installation type check valve seat of the utility model;

[0019] Figure 4 is the exploded structure schematic view of the quick installation type check valve seat of the utility model.

[0020] In the drawing:

[0021] 1-valve seat body, 101-connection ring, 102-gluing groove, 103-sealing strip, 104-bundling tape fastening hole, 105-level meter, 106-direction indicating arrow, 2-large sleeve, 3-small sleeve, 4-elastic sealing ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0023] In the description of the utility model, it needs to be explained that, unless otherwise stated, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0024] In the description of the utility model, it also needs to be explained that, unless otherwise stated and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Please refer to Figures 1-4 The utility model provides a quick installation type check valve seat, including valve seat main part 1, big sleeve 2 and small sleeve 3, the outer circumference of big sleeve 2 and small sleeve 3 is provided with a plurality of elastic sealing rings 4, and the elastic sealing ring 4 is of rubber material, the back of valve seat main part 1 is connected with small sleeve 3, big sleeve 2 is set on small sleeve 3, wherein the specification of small sleeve 3 is suitable for 160mm flue port, and big sleeve 2 can be removed during use;The specification of big sleeve 2 is suitable for 180mm flue port, due to the elastic extrusion effect of the elastic sealing ring 4 on the outer circumference of small sleeve 3, the contact surface of big sleeve 2 and small sleeve 3 is connected closely, and smoke dispersion is prevented.

[0026] In the embodiment, the back of valve seat main part 1 extends and is provided with a connecting ring 101, and small sleeve 3 is set on the connecting ring 101 by interference fit, so that disassembly and replacement can be realized, and the applicability is improved.

[0027] In order to improve the adaptation performance of the application, the back of the valve seat body 1 is provided with a glue groove 102, and the device can still paste and fix the valve seat body 1 on the wall. The back of the valve seat body 1 is provided with a sealing strip 103 to prevent smoke from escaping from the gap. The valve seat body 1 is also provided with a cable tie fastening hole 104, and the application can also use cable ties and steel bars to fix the valve seat. By retaining various traditional installation methods, the application range of the application is improved.

[0028] In order to facilitate installation, the front of the valve seat body 1 is provided with a level 105. The front of the valve seat body 1 is provided with a direction indicating arrow 106.

[0029] When the flue opening diameter is 160mm, first remove the outermost large sleeve 2, then insert the small sleeve 3 into the flue opening with the back of the valve seat body 1 facing the flue opening, find the angle, and form a multi-seal structure through the elastic sealing ring 4 on the outer circumference of the small sleeve 3 and the elastic contact with the inner wall of the flue opening, thereby realizing the isolation and sealing of the flue gas. When the flue opening diameter is 180mm, the large sleeve 2 does not need to be removed, and the large sleeve 2 can be directly inserted into the flue opening.

[0030] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A quick-mount check valve seat, characterized by: The utility model relates to a valve seat body (1), big sleeve (2) and small sleeve (3), the outer circumference of big sleeve (2) and small sleeve (3) all is provided with a plurality of elastic sealing ring (4), the back of valve seat body (1) is connected small sleeve (3), big sleeve (2) is set on small sleeve (3).

2. A quick-mount check valve seat according to claim 1, characterized in that: The elastic sealing ring (4) is made of rubber.

3. A quick-mount check valve seat according to claim 2, wherein: The back of the valve seat body (1) is provided with a connecting ring (101), and the small sleeve (3) is sleeved on the connecting ring (101).

4. A quick-mount check valve seat according to claim 3, wherein: The back of the valve seat body (1) is provided with a glue groove (102).

5. A quick-mount check valve seat according to claim 4, wherein: The back of the valve seat body (1) is provided with a sealing strip (103).

6. A quick-mount check valve seat according to claim 5, wherein: The valve seat body (1) is also provided with a cable tie fastening hole (104).

7. A quick-mount check valve seat according to any one of claims 1-6, characterized in that: The front of the valve seat body (1) is provided with a level (105).

8. A quick-mount check valve seat according to claim 7, characterized in that: The front of the valve seat body (1) is provided with a direction indicating arrow (106).

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