Mechanical rebound one-way ventilation valve

Abstract

The utility model relates to a one-way valve, in particular to a mechanical rebound one-way breather valve, which solves the design problem of a closed structure of a breather valve. Comprising a valve seat and a valve cover, the valve seat is of a convex disc-shaped structure, one axial end of the valve seat is provided with a mounting surface, the valve seat is provided with a mounting groove at the mounting surface, the bottom of the mounting groove is provided with a through one-way hole, the mounting groove is provided with abutting blocks at the outer edge of the one-way hole at uniform intervals, and the center of the one-way hole is provided with a rib frame connected with the hole wall. A sealing rubber piece is further arranged in the mounting groove, the sealing rubber piece makes contact with the abutting block in the radial direction of the valve seat for limiting, the sealing rubber piece is supported by abutting against the rib frame in the axial direction of the valve seat, and the valve deck is embedded into the mounting groove. And by means of elastic abutting of the arc-shaped structure, forward stable and continuous outflow is guaranteed, reverse leakproofness can be enhanced, and the design and use requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a one-way valve, especially a mechanical rebound one-way air permeable valve. BACKGROUND

[0002] The one-way air permeable valve is widely used, and is often used on protective clothing, masks, food packaging bags and other objects. The main function is one-way air permeation or exhaust, and the valve is produced by injection molding. The structure of the traditional product is stable, but the air hole is small. In addition, many products use a diaphragm to control one-way air permeation, and the diaphragm is fixed by a single-point abutment. When the medium flows in the positive direction, the diaphragm can be normally opened, but when the medium flows in the reverse direction, the diaphragm is pressed against the air-tight hole. In actual use, the ideal effect cannot be achieved, and the diaphragm may leak locally or the sealing performance is limited due to changes in the flow rate, flow volume and flow direction of the medium. There is a lack of a more stable and reliable product. SUMMARY

[0003] In view of the above technical problems, the utility model provides a mechanical rebound one-way air permeable valve.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a mechanical rebound one-way air permeable valve, which comprises a valve seat and a valve cover. The valve seat is in the form of a convex disc, and has a mounting surface at one end in the axial direction. The valve seat is provided with a mounting groove at the mounting surface. The bottom of the mounting groove is provided with a through one-way hole. The mounting groove is provided with uniformly spaced abutment blocks at the outer edge of the one-way hole. The central part of the one-way hole is provided with a rib frame connected to the hole wall. The mounting groove is further provided with a sealing rubber sheet. The sealing rubber sheet is in contact with the abutment blocks in the radial direction of the valve seat and is limited in position. The sealing rubber sheet is supported in the axial direction of the valve seat by abutting against the rib frame. The valve cover is embedded in the mounting groove, and the valve cover abuts against the abutment blocks. The valve cover is provided with a pressing belt on the side facing the mounting groove. The pressing belt is in the form of an arc. The central part of the valve cover is provided with an air outlet hole. The pressing belt elastically abuts against the sealing rubber sheet to fix it.

[0005] The valve cover is provided with a slot corresponding to the position of the pressing belt.

[0006] The pressing belts are arranged in pairs and are parallel to each other.

[0007] The valve cover is provided with a reinforcing protrusion on the end face opposite to the side where the pressing belt is located.

[0008] The reinforcing protrusions are arranged in pairs and are symmetrically arranged between the reinforcing protrusions.

[0009] The abutment blocks and the groove walls of the mounting groove have a spacing therebetween. The valve cover is provided with an embedded ring inserted into the spacing between the abutment blocks and the groove walls of the mounting groove.

[0010] The rib frame is in Y-shaped structure.

[0011] The one-way hole is provided with a fixedly connected filter screen at the hole opening.

[0012] The valve seat is further provided with a connected blocking ring at one end of the mounting surface.

[0013] The abutting blocks are provided with three blocks, and adjacent abutting blocks and the valve seat center line are at an angle of 120 degrees.

[0014] The utility model discloses a kind of mechanical rebound one-way breather valve, and the utility model has the advantages that: the utility model provides a kind of mechanical rebound one-way breather valve, by arc structure elastic abutment, guaranteeing positive stable continuous outflow, also can strengthen reverse airtightness, meet design use needs. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the combined side view structure schematic diagram of the utility model;

[0016] Figure 2 It is the valve cover outer surface structure schematic diagram of the utility model;

[0017] Figure 3 It is the valve seat outer surface structure schematic diagram of the utility model;

[0018] Figure 4 It is the valve seat inner surface structure schematic diagram of the utility model;

[0019] Figure 5 It is the valve cover side view structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0020] As Figures 1-5As shown, a mechanical rebound one-way air valve includes a valve seat 1 and a valve cover 2, the valve seat 1 is in the form of a convex disc structure, the valve seat 1 has a mounting surface at one end in the axial direction, the valve seat 1 is provided with a mounting groove 3 at the mounting surface, the mounting groove 3 accommodates the main sealing component. The mounting groove 3 is provided with a through one-way hole 4 at the outer edge of the one-way hole 4, and the mounting groove 3 is provided with uniformly spaced abutting blocks 5 at the outer edge of the one-way hole 4, the design of the abutting blocks 5 is mainly used for internal limiting and fixing and auxiliary installation of the valve cover 2. The one-way hole 4 is centrally provided with a rib frame 6 connected with the hole wall, the design of the rib frame 6 in this embodiment supports the filter screen 8 and the sealing rubber sheet 7 at both ends on one hand, and on the other hand, the rib frame 6 can strengthen the structural strength of the central part. The mounting groove 3 is further provided with a sealing rubber sheet 7, the sealing rubber sheet 7 is in contact with the abutting block 5 in the radial direction of the valve seat 1 and is limited, and the sealing rubber sheet 7 is supported by the rib frame 6 in the axial direction of the valve seat 1. The valve cover 2 is embedded in the mounting groove 3, and the valve cover 2 abuts against the abutting block 5. The valve cover 2 is provided with a pressing belt 9 on the side facing the mounting groove 3, the pressing belt 9 is in the form of an arc structure, the valve cover 2 is further provided with an air outlet hole 10 in the center, and the pressing belt 9 elastically abuts against the sealing rubber sheet 7 for fixation. The arc structure of the pressing belt 9 strengthens the elastic abutting strength, can also maintain the elastic recovery force, and avoids reaching the limit fatigue after long-term use. When the medium flows reversely at the air outlet hole 10, the medium impacting the inside of the pressing belt 9 is beneficial to strengthen the airtightness.

[0021] The valve cover 2 is provided with a slot 11 corresponding to the position of the pressing belt 9, which is more conducive to the impact of the medium directly on the pressing belt 9 and strengthens the airtightness and stability. The pressing belt 9 is arranged in pairs and parallel to each other, achieving multi-point or surface pressing contact, and further strengthening the structure and use reliability. The valve cover 2 is provided with a reinforcing protrusion 12 on the end face opposite to the position of the pressing belt 9, which strengthens the structural strength of the valve cover 2. The reinforcing protrusions 12 are arranged in at least pairs and symmetrically positioned between the reinforcing protrusions 12, improving the structural balance and stability. The abutting block 5 and the groove wall of the mounting groove 3 have a spacing therebetween, and the valve cover 2 is provided with an embedded ring 13 inserted into the spacing between the abutting block 5 and the groove wall of the mounting groove 3, so that the cooperation between the valve cover 2 and the valve seat 1 is more in-depth, and the structural stability can also be enhanced. The rib frame 6 is in the form of a Y-shaped structure, which is relatively simple compared with the traditional structure, can also ensure the basic connection and support strength, and can also achieve the expected effect of increasing the flow.

[0022] The one-way hole 4 is provided with a filter screen 8 fixedly connected at the hole opening, which filters impurities, reduces loss, and improves service life. The valve seat 1 is further provided with a connected stop ring 14 at one end of the mounting surface, which can be used for actual installation, and can be fixed by perforation and sewing or adhesion. The abutting blocks 5 are provided in three places, and the connecting lines of the adjacent abutting blocks 5 and the center of the valve seat 1 form an included angle of 120 degrees. The abutting blocks 5 correspond to the rib frame 6, and the local structural strength is correspondingly strengthened.

[0023] In the description of the utility model, need explain, the term "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation to the utility model, at the same time, the basic principle, main features and the advantages of the utility model are shown and described above, and the technical personnel of the industry should understand.

Claims

1. A mechanically rebound one-way vent valve, comprising a valve seat and a valve cover, characterized in that, The valve seat has a convex disc structure. It has a mounting surface at one axial end and a mounting groove at the mounting surface. A through-hole is located at the bottom of the mounting groove. Evenly spaced abutment blocks are located at the outer edge of the one-way hole. A rib connected to the hole wall is located in the center of the one-way hole. A sealing film is also provided inside the mounting groove. The sealing film contacts and limits the abutment blocks radially on the valve seat and is supported axially by abutting against the rib. The valve cover is embedded in the mounting groove and abuts against the abutment blocks. A pressing band with an arc-shaped structure is provided on the side facing the mounting groove. An air vent is located in the center of the valve cover. The pressing band elastically abuts against the sealing film for fixation.

2. The mechanical rebound one-way vent valve as described in claim 1, characterized in that, The valve cover has a slot corresponding to the position of the pressing band.

3. A mechanical rebound one-way vent valve as described in claim 1 or 2, characterized in that, The pressing bands are arranged in pairs and parallel to each other.

4. The mechanical rebound one-way vent valve as described in claim 3, characterized in that, The valve cover has a reinforcing protrusion on the end face opposite to the pressing band.

5. A mechanical rebound one-way vent valve as described in claim 4, characterized in that, The reinforcing protrusions are arranged in at least pairs, and the positions of the reinforcing protrusions are symmetrical.

6. The mechanical rebound one-way vent valve as described in claim 1, characterized in that, There is a gap between the abutment block and the wall of the mounting groove, and the valve cover is provided with an insert ring that is inserted between the abutment block and the wall of the mounting groove.

7. A mechanical rebound one-way vent valve as described in claim 1, characterized in that, The ribs have a Y-shaped structure.

8. A mechanical rebound one-way vent valve as described in claim 1, characterized in that, The one-way hole has a filter screen fixedly connected at the opening.

9. A mechanical rebound one-way vent valve as described in claim 1, characterized in that, The valve seat also has a connecting retaining ring at one end of the mounting surface.

10. A mechanical rebound one-way vent valve as described in claim 1, characterized in that, The abutment block is provided in three places, and the line connecting the adjacent abutment blocks to the center of the valve seat forms a 120-degree angle.

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