A valve structure for improving exhaust efficiency

Abstract

The utility model discloses an air valve structure for improving exhaust efficiency, including an air nozzle, an air cavity is arranged in the air nozzle, an air vent is arranged in the air cavity, an air plug for sealing the air vent is arranged in the air cavity, the air nozzle is connected to an air cover, an exhaust port is arranged on the air cover, the exhaust port, the air cavity and the exhaust port are connected in sequence, a first sealing ring is arranged on the inner wall of the air cavity, a second sealing ring is arranged on the air cover, when the air cover is in an open state, the first sealing ring is connected with the second sealing ring to form a seal, and the exhaust port is arranged on the air cover inside the second sealing ring. When the air cover is in an open state, the first sealing ring and the second sealing ring are sealed in a close fit, which can effectively avoid the problem in the prior art that external air will enter the air cover again and affect the exhaust when exhausting, thereby effectively improving the exhaust efficiency, being adaptable to some low-power exhaust equipment, and having good product compatibility.

Description

Technical Field

[0001] The utility model relates to an air valve structure for improving exhaust efficiency. Background Art

[0002] Prior art, such as the Chinese utility model patent document, publication number CN211767674U, discloses a vacuum bag valve. Figure 4 In the prior art, the function of the valve cover is to compress the sealing plug to prevent the sealing plug from deforming and leaking. When vacuuming and exhausting, the valve cover is moved upward by rotating it. During this process, the block moves along the spiral connection groove, so that the valve cover can move upward or downward during the rotation. When the valve cover moves upward to the maximum position, the valve cover is in a fully open state. In this state, the sealing plug is not constrained by the valve cover and can be deformed so that vacuuming can be performed. During the vacuuming process, the airflow inside the vacuum bag passes through the air inlet and is discharged from the air outlet.

[0003] Based on the above, the technical problem existing in the prior art is that, due to the setting of the block, the valve cover must be provided with a slot on the valve cover above the block during mold production, and the setting of the slot can enable the valve cover with the block to be demolded smoothly. However, the setting of the slot allows external air to enter the inside of the valve cover through the slot. Moreover, the slot is located on the outside of the air outlet, resulting in that when the vacuum equipment is used for vacuuming, when the interface of the vacuum equipment cannot cover the slot, the vacuum equipment drives the air to be output from the air outlet, but the external air will enter the valve cover again through the slot. This situation will affect the exhaust efficiency of the vacuum bag and greatly reduce the vacuum efficiency, especially when the user is using a low-power vacuum equipment, the exhaust efficiency will be lower due to the influence of external air entering the valve cover from the slot, and further improvement is needed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a valve structure for improving exhaust efficiency.

[0005] An air valve structure designed for this purpose to improve exhaust efficiency comprises an air nozzle, an air cavity is arranged in the air nozzle, an air vent is arranged in the air cavity, an air plug for sealing the air vent is arranged in the air cavity, the air nozzle is connected to an air cover, an exhaust port is arranged on the air cover, the exhaust port, the air cavity and the exhaust port are connected in sequence, a first sealing ring is arranged on the inner wall of the air cavity, and a second sealing ring is arranged on the air cover;

[0006] When the gas cover is in an open state, the first sealing ring and the second sealing ring are connected to form a seal;

[0007] The exhaust port is arranged on the air cover inside the second sealing ring.

[0008] Preferably, a pressing piece for abutting against the gas plug is provided in the gas cap, and the second sealing ring is provided on the pressing piece.

[0009] Preferably, a limiting portion is provided on the upper portion of the first sealing ring, and when the gas cover is in an open state, the upper end surface of the second sealing ring fits against the limiting portion.

[0010] Preferably, a switch track groove is provided on the gas nozzle, and a slider embedded in the switch track groove and movable along the switch track groove is provided on the gas cover.

[0011] Preferably, a slot is provided on the air cover above the slider;

[0012] The groove is arranged on the gas cover outside the second sealing ring;

[0013] The gas cover is provided with a shielding member for shielding the slot, and the shielding member is detachably connected to the gas cover.

[0014] Preferably, a buckle is provided on the shielding member, and the buckle is snapped into the slot.

[0015] Preferably, a protrusion is provided on the gas cover, and the exhaust port is provided on the protrusion.

[0016] Preferably, the air cover and the pressing member are split structures and are detachably connected.

[0017] Compared with the prior art, the utility model is provided with a first sealing ring on the inner wall of the air cavity, and a second sealing ring on the air cover; when the air cover is in an open state, the first sealing ring and the second sealing ring are connected to form a seal; the exhaust port is provided on the air cover inside the second sealing ring. The first sealing ring and the second sealing ring provided in the utility model are fitted and sealed when the air cover is in an open state, which can effectively avoid the problem of external air entering the air cover again and affecting the exhaust when the air is pumped in the prior art, thereby effectively improving the exhaust efficiency, being adaptable to some low-power exhaust equipment, and having good product compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the exploded structure of the gas valve;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas cover in a closed state;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the gas cover in an open state;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the gas cover in a closed state;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the gas cover in an open state;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the gas cover. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 6 , a gas valve structure for improving exhaust efficiency, comprising a gas nozzle 10, wherein an air cavity 110 is arranged in the gas nozzle 10, wherein an air vent 100 is arranged in the air cavity 110, wherein an air plug 20 for sealing the air vent 100 is arranged in the air cavity 110, wherein the gas nozzle 10 is connected to an air cover 30, wherein an exhaust port 310 is arranged on the air cover 30, wherein the air vent 100, the air cavity 110 and the exhaust port 310 are sequentially connected, wherein: a first sealing ring 40 is arranged on the inner wall of the air cavity 110, and a second sealing ring 510 is arranged on the air cover 30;

[0026] When the gas cover 30 is in the open state, the first sealing ring 40 and the second sealing ring 510 are connected to form a seal;

[0027] The exhaust port 310 is disposed on the gas cover 30 inside the second sealing ring 510 .

[0028] During vacuuming, the gas cover 30 is unscrewed to open the gas cover 30. Figure 5 As shown, the first sealing ring 40 and the second sealing ring 510 are connected to form a seal. At this time, it is only necessary to connect the interface of the exhaust device with the exhaust port 310 to achieve vacuuming. During the vacuuming process, since the first sealing ring 40 and the second sealing ring 510 are connected and sealed, it can prevent external airflow from entering the air cover 30, thereby preventing external air from entering and affecting the exhaust efficiency, and effectively improving the vacuuming efficiency.

[0029] The gas cap 30 includes a pressing piece 50 for contacting the gas plug 20 . The second sealing ring 510 is disposed on the pressing piece 50 .

[0030] In the present invention, the gas cover 30 and the pressing member 50 can be configured as an integrated structure or a split structure. When the two are split structures, the two can be detachably connected.

[0031] See also Figure 5A limiting portion 410 is provided on the upper portion of the first sealing ring 40 . When the gas cover 30 is in an open state, the upper end surface of the second sealing ring 510 is in contact with the limiting portion 410 .

[0032] The position limiting part 410 is annular in structure, and can not only restrict the maximum upward movement position of the second sealing ring 510, but also can form a seal with the second sealing ring 510 when the position limiting part 410 is in contact with the second sealing ring 510, thereby sealing and blocking the airflow.

[0033] See also Figure 1 , Figure 3 and Figure 6 The gas nozzle 10 is provided with a switch track groove 120 , and the gas cover 30 is provided with a slider 330 embedded in the switch track groove 120 and movable along the switch track groove 120 .

[0034] The switch track groove 120 is a spiral groove. When the air cover 30 rotates forward or reversely, it can gradually move upward or downward along the switch track groove 120 to achieve the air cover 30 opening upward or closing downward.

[0035] See also Figure 1 and Figure 2 The air cover 30 above the slider 330 is provided with a slot 340; the air cover 30 is provided with a shielding member 60 for shielding the slot 340, and the shielding member 60 is detachably connected to the air cover 30. The shielding member 60 can shield the slot 340 to make the air cover 30 more beautiful as a whole, and at the same time, it can seal the slot 340 to a certain extent to prevent external air from flowing downward from the slot 340.

[0036] At the same time, the groove 340 is arranged on the gas cover 30 outside the second sealing ring 510. The groove 340 is located outside the second sealing ring 510. Under this structure, even if the external airflow flows downward from the groove 340, when the airflow encounters the sealing of the first sealing ring 40 and the second sealing ring 510, the airflow can be blocked, so that the external airflow cannot flow into the gas cover 30.

[0037] See also Figure 6 The shielding member 60 is provided with a buckle 610 , and the buckle 610 is snapped into the slot 340 .

[0038] See also Figure 2 The gas cover 30 is provided with a raised portion 320, and the exhaust port 310 is provided on the raised portion 320. The raised portion 320 is provided for connecting with the interface of the exhaust device. The raised portion 320 is a columnar raised portion, and is plugged with the exhaust joint during vacuuming.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An air valve structure for improving exhaust efficiency, comprising an air nozzle (10), an air cavity (110) being arranged in the air nozzle (10), an air vent (100) being arranged in the air cavity (110), an air plug (20) being arranged in the air cavity (110) for sealing the air vent (100), the air nozzle (10) being connected to an air cover (30), an exhaust port (310) being arranged on the air cover (30), the exhaust port (100), the air cavity (110) and the exhaust port (310) being connected in sequence, characterized in that: A first sealing ring (40) is provided on the inner wall of the air cavity (110), and a second sealing ring (510) is provided on the air cover (30); When the gas cover (30) is in an open state, the first sealing ring (40) and the second sealing ring (510) are connected to form a seal; The exhaust port (310) is arranged on the air cover (30) inside the second sealing ring (510).

2. The air valve structure for improving exhaust efficiency according to claim 1, characterized in that: A pressing piece (50) for abutting against the gas plug (20) is arranged in the gas cover (30), and the second sealing ring (510) is arranged on the pressing piece (50).

3. A valve structure for improving exhaust efficiency according to claim 1 or 2, characterized in that: A limiting portion (410) is provided on the upper portion of the first sealing ring (40), and when the gas cover (30) is in an open state, the upper end surface of the second sealing ring (510) is in contact with the limiting portion (410).

4. The air valve structure for improving exhaust efficiency according to claim 1, characterized in that: The gas nozzle (10) is provided with a switch track groove (120), and the gas cover (30) is provided with a slider (330) embedded in the switch track groove (120) and movable along the switch track groove (120).

5. The air valve structure for improving exhaust efficiency according to claim 4, characterized in that: A slot (340) is provided on the air cover (30) above the slider (330); The groove (340) is arranged on the gas cover (30) outside the second sealing ring (510); The gas cover (30) is provided with a shielding member (60) for shielding the slot (340), and the shielding member (60) is detachably connected to the gas cover (30).

6. The air valve structure for improving exhaust efficiency according to claim 5, characterized in that: The shielding member (60) is provided with a buckle (610), and the buckle (610) is buckled in the slot (340).

7. The air valve structure for improving exhaust efficiency according to claim 1, characterized in that: The gas cover (30) is provided with a raised portion (320), and the exhaust port (310) is provided on the raised portion (320).

8. The air valve structure for improving exhaust efficiency according to claim 2, characterized in that: The gas cover (30) and the pressing member (50) are split structures and are detachably connected.

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