Air valve body structure

Abstract

The utility model relates to the field of check valves, and discloses an air valve body structure, a valve body can be connected and matched with an air pipe body, the valve body comprises a valve body middle section, a convex rib structure and a plug-in structure, the axis of the valve body middle section, the axis of the convex rib structure and the axis of the plug-in structure coincide with the axis of the valve body, and the convex rib structure and the plug-in structure coincide with each other. The inserting structures are located at the two ends of the valve body middle section and used for being inserted into the air pipe body, the convex rib structures are located between the valve body middle section and the inserting structures, and the outer diameter of the convex rib structures is larger than the inner diameter of the air pipe body. The convex rib structure and the insertion structure are arranged on the valve body, so that the installation efficiency of the valve body and the air pipe can be effectively improved, and the anti-falling valve has an excellent anti-falling effect and has the advantages of being simple and convenient in installation process, stable and firm in connection, good in anti-falling effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a damper valve body structure. Background Art

[0002] During daily cooking, the fumes generated in the kitchen need to be discharged outdoors in a timely manner. Modern buildings are generally built with public flues. The range hood absorbs the fumes in the kitchen and discharges them to the public flue. Since the density of high-temperature fumes is less than the density of air, the fumes will rise in the public flue. For this reason, when residents on higher floors use range hoods to exhaust fumes to the public flue, they often encounter difficulties in exhausting fumes or even the problem of fumes in the public flue flowing back and causing indoor odor.

[0003] In order to solve the problems of oil smoke backflow and odor in the public flue of high-rise residential buildings, many electric check valves, which can also be collectively referred to as electric air valves, have appeared on the market. They are installed on the air duct connecting the range hood and the public flue. The air valve includes a valve body and a valve plate. The valve plate is installed in the valve body and matches the cross-section of the valve body. The valve plate can block and open the valve body by turning a certain angle, thereby preventing the oil smoke in the public flue from backflowing into the room when the range hood is in the closed state. However, most of the air valve products on the market are difficult to connect to the air duct or the valve body and the air duct are easy to disengage after connection, so there is room for improvement. Utility Model Content

[0004] In view of the problems existing in the prior art: the existing air valve products are difficult to connect and install with the air duct, and the valve body of the air valve and the air duct are easily detached after connection. The purpose of the utility model is to provide an air valve body structure, which can effectively improve the installation efficiency of the valve body and the air duct by arranging a conical interface and convex ribs on the valve body, and has excellent anti-detachment effect, and has the advantages of simple and convenient installation process, stable and firm connection, and good anti-detachment effect.

[0005] In order to achieve the above object, the technical solution of the utility model is:

[0006] A wind valve body structure, the valve body can be connected and cooperated with an air duct body, the valve body includes a valve body middle section, a convex rib structure and a plug-in structure, the axes of the valve body middle section, the convex rib structure and the plug-in structure all coincide with the axis of the valve body, the plug-in structure is located at both ends of the valve body middle section and the plug-in structure is used to be inserted into the air duct body, the convex rib structure is located between the valve body middle section and the plug-in structure and the outer diameter of the convex rib structure is greater than the inner diameter of the air duct body.

[0007] The utility model is further configured as follows: the plug-in structure comprises an interface structure, and the outer diameter of an end of the interface structure away from the middle section of the valve body is smaller than the inner diameter of the air duct body.

[0008] The utility model is further configured as follows: the interface structure is tapered.

[0009] The utility model is further configured as follows: the angle between the conical surface of the interface structure and the horizontal plane is 4-7 degrees.

[0010] The utility model is further configured as follows: the length of the interface structure in the axial direction thereof is 8-13 mm.

[0011] The utility model is further configured as follows: the plug-in structure also includes a flat section structure, the flat section structure is located between the interface structure and the rib structure, and the outer diameter of the flat section structure is not less than the inner diameter of the air duct body.

[0012] The utility model is further configured as follows: the length of the flat section structure in the axial direction thereof is 8-13 mm.

[0013] The utility model is further configured as follows: the difference between the outer diameter of the convex rib structure and the inner diameter of the air duct body is 6-10 mm.

[0014] The utility model is further configured as follows: the air valve body structure also includes a fixing member, which is used to connect and fix the valve body and the air duct body after the valve body is inserted into the air duct body, and the fixing member is located outside the valve body and the air duct body.

[0015] The utility model is further configured as follows: the fixing piece is a sealing tape.

[0016] In summary, the beneficial effects achieved by the present invention are as follows:

[0017] (1) The conical interface structures at both ends of the valve body can play a guiding role in the process of inserting the valve body into the air duct body. At the same time, since the outer diameter of the end of the interface structure away from the middle section of the valve body is smaller than the inner diameter of the air duct body, it is convenient for the interface structure to enter the air duct body;

[0018] (2) The outer diameter of the flat section structure between the interface structure and the convex rib structure is equal to or greater than the inner diameter of the air duct body. Therefore, after the flat section structure is inserted into the air duct body along with the interface structure, an interference fit is formed between the flat section structure and the air duct body, thereby forming a certain fixing effect between the valve body and the air duct body and playing a preliminary fixing role, which is convenient for further fixing between the valve body and the air duct body in the future;

[0019] (3) Since the outer diameter of the convex rib structure is larger than the inner diameter of the air duct body, when the interface structure and the flat section structure completely enter the air duct body, the port of the air duct body will abut against the convex rib structure, and the convex rib structure cannot enter the air duct body, thereby ensuring that the length of the valve body inserted into the air duct body is constant;

[0020] (4) The fixing parts located outside the valve body and the air duct body can further strengthen the connection and fixation between the valve body and the air duct body after the flat section structure and the air duct body are initially fixed, and have a good anti-slip effect;

[0021] (5) By wrapping the sealing tape as a fixing part around the valve body and the outside of the air duct body, the rib structure can be effectively used to limit the axial displacement between the valve body and the air duct body, thereby strengthening the connection effect between the valve body and the air duct body and preventing loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 This is a front view of the air valve body in the first embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the air valve body in the first embodiment of the utility model;

[0025] Figure 3 This is a cross-sectional view of the air valve body installed on the air duct in the first embodiment of the utility model;

[0026] Figure 4 for Figure 3 A partial enlarged view of part A;

[0027] Figure 5 for Figure 3 A partial enlarged view of part B;

[0028] Figure 6 It is a cross-sectional view showing the position of the sealing ring in the second embodiment of the present utility model.

[0029] In the figure: 1. duct body; 2. valve body; 21. middle section of valve body; 211. mounting hole; 22. first convex rib; 23. second convex rib; 24. first flat section; 25. second flat section; 26. first interface; 27. second interface; 3. fixing piece; 4. sealing ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application.

[0031] It should be noted that the embodiments of the present invention and the features involved in the embodiments can be combined with each other without conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] As attached Figure 1-3 As shown, a damper valve body structure, wherein the valve body 2 can be connected and matched with the air duct body 1. The valve body 2 includes a valve body middle section 21 coaxially arranged with the valve body 2 itself, a rib structure and a plug-in structure.

[0034] The valve body middle section 21 is cylindrical and is the main body of the valve body 2. The valve body middle section 21 is provided with a plurality of mounting holes 211 for mounting the valve disc according to the position of the valve disc inside the valve body.

[0035] Both ends of the valve body 2 are provided with rib structures and plug-in structures in a mirror-image manner.

[0036] Specifically, the rib structure includes a first rib 22 and a second rib 23 respectively located at both ends of the valve body middle section 21. The first rib 22 and the second rib 23 are both annular protrusions, and their outer diameters are larger than the inner diameters of the air duct body 1, so as to play a positioning role when the valve body 2 is inserted into the air duct body 1.

[0037] In this embodiment, the cross-sections of the first rib 22 and the second rib 23 are both triangular. In other embodiments, they can also be set to square, semicircular, rectangular, etc., as long as they can abut against the port of the air duct body 1 to prevent the first rib 22 and the second rib 23 from entering the air duct body 1.

[0038] The plug-in structure is used to be inserted into the air duct body 1, and the plug-in structure includes an interface structure and a flat section structure.

[0039] The interface structure is located at the two outermost ends of the valve body 2 , and includes a first interface 26 and a second interface 27 .

[0040] The first interface 26 and the second interface 27 are both conical, and the outer diameter of the first interface 26 and the second interface 27 at one end away from the valve body middle section 21 is smaller than the inner diameter of the air duct body 1, which facilitates the first interface 26 and the second interface 27 to enter the air duct body 1, and can play a guiding role in the process of inserting the valve body 2 into the air duct body 1, thereby facilitating plug-in.

[0041] The flat section structure is located between the interface structure and the convex rib structure. In a normal state, the diameter of the cylindrical flat section structure is the same as the diameter of the valve body middle section 21. The flat section structure includes a cylindrical first flat section 24 and a second flat section 25, wherein the first flat section 24 is located between the first interface 26 and the first convex rib 22, and the second flat section 25 is located between the second interface 27 and the second convex rib 23.

[0042] The outer diameters of the first flat section 24 and the second flat section 25 are equal to or slightly larger than the inner diameter of the air duct body 1. Therefore, after the first flat section 24 or the second flat section 25 is inserted into the air duct body 1, an interference fit can be formed with the air duct body 1, thereby forming a certain fixing effect between the valve body 2 and the air duct body 1 and can play a preliminary fixing role, which is convenient for the subsequent further fixation between the valve body 2 and the air duct body 1.

[0043] As attached Figure 3-5 As shown, the outer diameters of the first flat section 24 and the second flat section 25 in this embodiment are equal to the inner diameter of the duct body 1, and the angle θ between the conical surfaces of the first interface 26 and the second interface 27 and the horizontal plane is 4-7 degrees, preferably 6 degrees in this embodiment.

[0044] In the actual connection and installation process, the length a of the first flat section 24 and the second flat section 25 in the axial direction, and the length b of the first interface 26 and the second interface 27 in the axial direction will affect the convenience and firmness of the connection between the valve body 2 and the air duct body 1. In this embodiment, the length of a is 8-13 mm, and the length of b is 8-13 mm. In this embodiment, the length of a is preferably 10 mm, and the length of b is preferably 10 mm.

[0045] In addition, to ensure that the first convex rib 22 and the second convex rib 23 can abut against the port of the air duct body 1, the difference between the outer diameter of the first convex rib 22 or the second convex rib 23 and the inner diameter of the air duct body 1 is 6-10 mm, preferably 6 mm in this embodiment, that is, the height difference H between the vertex of the first convex rib 22 or the second convex rib 23 in the radial direction and the first flat section 24 or the second flat section 25 is preferably 3 mm. Due to the existence of the height difference H, when the interface structure and the flat section structure completely enter the air duct body 1, the port of the air duct body 1 will abut against the first convex rib 22 or the second convex rib 23, and the first convex rib 22 or the second convex rib 23 cannot enter the air duct body 1, thereby ensuring that the length of the valve body 2 inserted into the air duct body 1 is constant.

[0046] The air valve body structure of the utility model further includes a fixing member 3. The fixing member 3 is used to connect and fix the valve body 2 and the air duct body 1 after the valve body 2 is inserted into the air duct body 1.

[0047] The fixing member 3 is arranged on the outside of the valve body 2 and the air duct body 1. The fixing member 3 in this embodiment is a sealing tape, which is wrapped around the outside of the valve body 2 and the air duct body 1. The first rib 22 or the second rib 23 can effectively use the first rib 22 or the second rib 23 to limit the axial displacement between the valve body 2 and the air duct body 1, thereby strengthening the connection effect between the valve body 2 and the air duct body 1 and preventing loosening.

[0048] The implementation principle of the above embodiment is:

[0049] When connecting the valve body 2 and the air duct body 1, taking one end of the valve body 2 as an example, the first interface 26 on the outermost side of the valve body 2 first enters the air duct body 1, and then the first flat section 24 is inserted into the air duct body 1 until the end of the air duct body 1 abuts against the first rib 22. At this time, the valve body 2 forms a preliminary fixing effect through the interference fit between the first flat section 24 and the air duct body 1, and then the fixing member 3 is used to further strengthen the connection and fixation between the valve body 2 and the air duct body 1. The other end of the valve body 2 can be installed in the same way. The entire installation process is simple and convenient, the connection is stable and firm, and the anti-slip effect is excellent.

[0050] Embodiment 2

[0051] As attached Figure 6 As shown, a damper body structure disclosed in the utility model is shown, which is different from the first embodiment in that it also includes sealing rings 4 arranged at both ends of the valve body 2.

[0052] The sealing ring 4 is made of rubber material and is sleeved at the connection between the first flat section 24 and the first convex rib 22 and the connection between the second flat section 25 and the second convex rib 23. Taking one end of the valve body 2 as an example, the cross-sectional shape of the sealing ring 4 is adapted to the shape of the first convex rib 22, so that after the first interface 26 and the first flat section 24 are fully inserted into the air duct body 1, the sealing ring 4 can be simultaneously attached between the port of the air duct body 1 and the first convex rib 22.

[0053] The provision of the sealing ring 4 not only further strengthens the sealing effect between the valve body 2 and the air duct body 1, preventing the odor problem caused by the seepage of oil smoke, but also plays a certain buffering role, avoiding the extrusion between the port of the air duct body 1 and the first rib 22, which may cause damage to the air duct body 1 or the first rib 22.

[0054] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A damper valve body structure, wherein the valve body (2) can be connected and matched with the air duct body (1), characterized in that: The valve body (2) comprises a valve body middle section (21), a convex rib structure and a plug-in structure. The axes of the valve body middle section (21), the convex rib structure and the plug-in structure all coincide with the axis of the valve body (2). The plug-in structure is located at both ends of the valve body middle section (21) and is used to be inserted into the air duct body (1). The convex rib structure is located between the valve body middle section (21) and the plug-in structure and the outer diameter of the convex rib structure is greater than the inner diameter of the air duct body (1).

2. The air valve body structure according to claim 1, characterized in that: The plug-in structure comprises an interface structure, and the outer diameter of an end of the interface structure away from the middle section (21) of the valve body is smaller than the inner diameter of the air duct body (1).

3. The air valve body structure according to claim 2, characterized in that: The interface structure is tapered.

4. The air valve body structure according to claim 3, characterized in that: The angle between the conical surface of the interface structure and the horizontal plane is 4-7 degrees.

5. The air valve body structure according to claim 2, characterized in that: The length of the interface structure in its axial direction is 8-13 mm.

6. The air valve body structure according to claim 2, characterized in that: The plug-in structure also includes a flat section structure, which is located between the interface structure and the rib structure, and the outer diameter of the flat section structure is not less than the inner diameter of the air duct body (1).

7. The air valve body structure according to claim 6, characterized in that: The length of the flat section structure in the axial direction thereof is 8-13 mm.

8. The air valve body structure according to claim 1, characterized in that: The difference between the outer diameter of the rib structure and the inner diameter of the air duct body (1) is 6-10 mm.

9. The air valve body structure according to claim 8, characterized in that: The air valve body structure further comprises a fixing member (3), wherein the fixing member (3) is used to connect and fix the valve body (2) and the air duct body (1) after the valve body (2) is inserted into the air duct body (1), and the fixing member (3) is located outside the valve body (2) and the air duct body (1).

10. The air valve body structure according to claim 9, characterized in that: The fixing member (3) is a sealing tape.

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